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hlwhl
2022-05-26 16:02:06 +08:00
parent f831868eac
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48
.gitignore vendored
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@@ -19,3 +19,51 @@ doc/api/
*.js_
*.js.deps
*.js.map
# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
migrate_working_dir/
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/
# Flutter/Dart/Pub related
**/doc/api/
**/ios/Flutter/.last_build_id
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
/build/
# Web related
lib/generated_plugin_registrant.dart
# Symbolication related
app.*.symbols
# Obfuscation related
app.*.map.json
# Android Studio will place build artifacts here
/android/app/debug
/android/app/profile
/android/app/release

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.metadata Normal file
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# This file tracks properties of this Flutter project.
# Used by Flutter tool to assess capabilities and perform upgrades etc.
#
# This file should be version controlled.
version:
revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
channel: stable
project_type: plugin
# Tracks metadata for the flutter migrate command
migration:
platforms:
- platform: root
create_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
base_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
- platform: ios
create_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
base_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
- platform: macos
create_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
base_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
- platform: windows
create_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
base_revision: fb57da5f945d02ef4f98dfd9409a72b7cce74268
# User provided section
# List of Local paths (relative to this file) that should be
# ignored by the migrate tool.
#
# Files that are not part of the templates will be ignored by default.
unmanaged_files:
- 'lib/main.dart'
- 'ios/Runner.xcodeproj/project.pbxproj'

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CHANGELOG.md Normal file
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## 0.0.1
* TODO: Describe initial release.

4
analysis_options.yaml Normal file
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include: package:flutter_lints/flutter.yaml
# Additional information about this file can be found at
# https://dart.dev/guides/language/analysis-options

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example/.gitignore vendored Normal file
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@@ -0,0 +1,47 @@
# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
migrate_working_dir/
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/
# Flutter/Dart/Pub related
**/doc/api/
**/ios/Flutter/.last_build_id
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
/build/
# Web related
lib/generated_plugin_registrant.dart
# Symbolication related
app.*.symbols
# Obfuscation related
app.*.map.json
# Android Studio will place build artifacts here
/android/app/debug
/android/app/profile
/android/app/release

16
example/README.md Normal file
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@@ -0,0 +1,16 @@
# webview_cef_example
Demonstrates how to use the webview_cef plugin.
## Getting Started
This project is a starting point for a Flutter application.
A few resources to get you started if this is your first Flutter project:
- [Lab: Write your first Flutter app](https://docs.flutter.dev/get-started/codelab)
- [Cookbook: Useful Flutter samples](https://docs.flutter.dev/cookbook)
For help getting started with Flutter development, view the
[online documentation](https://docs.flutter.dev/), which offers tutorials,
samples, guidance on mobile development, and a full API reference.

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example/analysis_options.yaml Normal file
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@@ -0,0 +1,29 @@
# This file configures the analyzer, which statically analyzes Dart code to
# check for errors, warnings, and lints.
#
# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
# invoked from the command line by running `flutter analyze`.
# The following line activates a set of recommended lints for Flutter apps,
# packages, and plugins designed to encourage good coding practices.
include: package:flutter_lints/flutter.yaml
linter:
# The lint rules applied to this project can be customized in the
# section below to disable rules from the `package:flutter_lints/flutter.yaml`
# included above or to enable additional rules. A list of all available lints
# and their documentation is published at
# https://dart-lang.github.io/linter/lints/index.html.
#
# Instead of disabling a lint rule for the entire project in the
# section below, it can also be suppressed for a single line of code
# or a specific dart file by using the `// ignore: name_of_lint` and
# `// ignore_for_file: name_of_lint` syntax on the line or in the file
# producing the lint.
rules:
# avoid_print: false # Uncomment to disable the `avoid_print` rule
# prefer_single_quotes: true # Uncomment to enable the `prefer_single_quotes` rule
# Additional information about this file can be found at
# https://dart.dev/guides/language/analysis-options

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example/lib/main.dart Normal file
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@@ -0,0 +1,63 @@
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:webview_cef/webview_cef.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String _platformVersion = 'Unknown';
final _webviewCefPlugin = WebviewCef();
@override
void initState() {
super.initState();
initPlatformState();
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> initPlatformState() async {
String platformVersion;
// Platform messages may fail, so we use a try/catch PlatformException.
// We also handle the message potentially returning null.
try {
platformVersion =
await _webviewCefPlugin.getPlatformVersion() ?? 'Unknown platform version';
} on PlatformException {
platformVersion = 'Failed to get platform version.';
}
// If the widget was removed from the tree while the asynchronous platform
// message was in flight, we want to discard the reply rather than calling
// setState to update our non-existent appearance.
if (!mounted) return;
setState(() {
_platformVersion = platformVersion;
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: Center(
child: Text('Running on: $_platformVersion\n'),
),
),
);
}
}

7
example/macos/.gitignore vendored Normal file
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@@ -0,0 +1,7 @@
# Flutter-related
**/Flutter/ephemeral/
**/Pods/
# Xcode-related
**/dgph
**/xcuserdata/

1
example/macos/Flutter/Flutter-Debug.xcconfig Normal file
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@@ -0,0 +1 @@
#include "ephemeral/Flutter-Generated.xcconfig"

1
example/macos/Flutter/Flutter-Release.xcconfig Normal file
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@@ -0,0 +1 @@
#include "ephemeral/Flutter-Generated.xcconfig"

12
example/macos/Flutter/GeneratedPluginRegistrant.swift Normal file
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@@ -0,0 +1,12 @@
//
// Generated file. Do not edit.
//
import FlutterMacOS
import Foundation
import webview_cef
func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
WebviewCefPlugin.register(with: registry.registrar(forPlugin: "WebviewCefPlugin"))
}

572
example/macos/Runner.xcodeproj/project.pbxproj Normal file
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@@ -0,0 +1,572 @@
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example/macos/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist Normal file
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@@ -0,0 +1,8 @@
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<key>IDEDidComputeMac32BitWarning</key>
<true/>
</dict>
</plist>

87
example/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme Normal file
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buildForArchiving = "YES"
buildForAnalyzing = "YES">
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</BuildActionEntries>
</BuildAction>
<TestAction
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selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
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selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
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7
example/macos/Runner.xcworkspace/contents.xcworkspacedata generated Normal file
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@@ -0,0 +1,7 @@
<?xml version="1.0" encoding="UTF-8"?>
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version = "1.0">
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8
example/macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist Normal file
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@@ -0,0 +1,8 @@
<?xml version="1.0" encoding="UTF-8"?>
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<true/>
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9
example/macos/Runner/AppDelegate.swift Normal file
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@@ -0,0 +1,9 @@
import Cocoa
import FlutterMacOS
@NSApplicationMain
class AppDelegate: FlutterAppDelegate {
override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
return true
}
}

68
example/macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json Normal file
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{
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343
example/macos/Runner/Base.lproj/MainMenu.xib Normal file
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<items>
<menuItem title="Show Substitutions" id="z6F-FW-3nz">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="orderFrontSubstitutionsPanel:" target="-1" id="oku-mr-iSq"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="gPx-C9-uUO"/>
<menuItem title="Smart Copy/Paste" id="9yt-4B-nSM">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleSmartInsertDelete:" target="-1" id="3IJ-Se-DZD"/>
</connections>
</menuItem>
<menuItem title="Smart Quotes" id="hQb-2v-fYv">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticQuoteSubstitution:" target="-1" id="ptq-xd-QOA"/>
</connections>
</menuItem>
<menuItem title="Smart Dashes" id="rgM-f4-ycn">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticDashSubstitution:" target="-1" id="oCt-pO-9gS"/>
</connections>
</menuItem>
<menuItem title="Smart Links" id="cwL-P1-jid">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticLinkDetection:" target="-1" id="Gip-E3-Fov"/>
</connections>
</menuItem>
<menuItem title="Data Detectors" id="tRr-pd-1PS">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticDataDetection:" target="-1" id="R1I-Nq-Kbl"/>
</connections>
</menuItem>
<menuItem title="Text Replacement" id="HFQ-gK-NFA">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticTextReplacement:" target="-1" id="DvP-Fe-Py6"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Transformations" id="2oI-Rn-ZJC">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Transformations" id="c8a-y6-VQd">
<items>
<menuItem title="Make Upper Case" id="vmV-6d-7jI">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="uppercaseWord:" target="-1" id="sPh-Tk-edu"/>
</connections>
</menuItem>
<menuItem title="Make Lower Case" id="d9M-CD-aMd">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="lowercaseWord:" target="-1" id="iUZ-b5-hil"/>
</connections>
</menuItem>
<menuItem title="Capitalize" id="UEZ-Bs-lqG">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="capitalizeWord:" target="-1" id="26H-TL-nsh"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Speech" id="xrE-MZ-jX0">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Speech" id="3rS-ZA-NoH">
<items>
<menuItem title="Start Speaking" id="Ynk-f8-cLZ">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="startSpeaking:" target="-1" id="654-Ng-kyl"/>
</connections>
</menuItem>
<menuItem title="Stop Speaking" id="Oyz-dy-DGm">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="stopSpeaking:" target="-1" id="dX8-6p-jy9"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="View" id="H8h-7b-M4v">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="View" id="HyV-fh-RgO">
<items>
<menuItem title="Enter Full Screen" keyEquivalent="f" id="4J7-dP-txa">
<modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
<connections>
<action selector="toggleFullScreen:" target="-1" id="dU3-MA-1Rq"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Window" id="aUF-d1-5bR">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
<items>
<menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
<connections>
<action selector="performMiniaturize:" target="-1" id="VwT-WD-YPe"/>
</connections>
</menuItem>
<menuItem title="Zoom" id="R4o-n2-Eq4">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="performZoom:" target="-1" id="DIl-cC-cCs"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="eu3-7i-yIM"/>
<menuItem title="Bring All to Front" id="LE2-aR-0XJ">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="arrangeInFront:" target="-1" id="DRN-fu-gQh"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Help" id="EPT-qC-fAb">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Help" systemMenu="help" id="rJ0-wn-3NY"/>
</menuItem>
</items>
<point key="canvasLocation" x="142" y="-258"/>
</menu>
<window title="APP_NAME" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" id="QvC-M9-y7g" customClass="MainFlutterWindow" customModule="Runner" customModuleProvider="target">
<windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
<rect key="contentRect" x="335" y="390" width="800" height="600"/>
<rect key="screenRect" x="0.0" y="0.0" width="2560" height="1577"/>
<view key="contentView" wantsLayer="YES" id="EiT-Mj-1SZ">
<rect key="frame" x="0.0" y="0.0" width="800" height="600"/>
<autoresizingMask key="autoresizingMask"/>
</view>
</window>
</objects>
</document>

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// Application-level settings for the Runner target.
//
// This may be replaced with something auto-generated from metadata (e.g., pubspec.yaml) in the
// future. If not, the values below would default to using the project name when this becomes a
// 'flutter create' template.
// The application's name. By default this is also the title of the Flutter window.
PRODUCT_NAME = webview_cef_example
// The application's bundle identifier
PRODUCT_BUNDLE_IDENTIFIER = com.electronicdream.webviewCefExample
// The copyright displayed in application information
PRODUCT_COPYRIGHT = Copyright © 2022 com.electronicdream. All rights reserved.

2
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#include "../../Flutter/Flutter-Debug.xcconfig"
#include "Warnings.xcconfig"

2
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#include "../../Flutter/Flutter-Release.xcconfig"
#include "Warnings.xcconfig"

13
example/macos/Runner/Configs/Warnings.xcconfig Normal file
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WARNING_CFLAGS = -Wall -Wconditional-uninitialized -Wnullable-to-nonnull-conversion -Wmissing-method-return-type -Woverlength-strings
GCC_WARN_UNDECLARED_SELECTOR = YES
CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE
CLANG_WARN__DUPLICATE_METHOD_MATCH = YES
CLANG_WARN_PRAGMA_PACK = YES
CLANG_WARN_STRICT_PROTOTYPES = YES
CLANG_WARN_COMMA = YES
GCC_WARN_STRICT_SELECTOR_MATCH = YES
CLANG_WARN_OBJC_REPEATED_USE_OF_WEAK = YES
CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES
GCC_WARN_SHADOW = YES
CLANG_WARN_UNREACHABLE_CODE = YES

12
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>com.apple.security.app-sandbox</key>
<true/>
<key>com.apple.security.cs.allow-jit</key>
<true/>
<key>com.apple.security.network.server</key>
<true/>
</dict>
</plist>

32
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>$(DEVELOPMENT_LANGUAGE)</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIconFile</key>
<string></string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>$(PRODUCT_NAME)</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>$(FLUTTER_BUILD_NAME)</string>
<key>CFBundleVersion</key>
<string>$(FLUTTER_BUILD_NUMBER)</string>
<key>LSMinimumSystemVersion</key>
<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
<key>NSHumanReadableCopyright</key>
<string>$(PRODUCT_COPYRIGHT)</string>
<key>NSMainNibFile</key>
<string>MainMenu</string>
<key>NSPrincipalClass</key>
<string>NSApplication</string>
</dict>
</plist>

15
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import Cocoa
import FlutterMacOS
class MainFlutterWindow: NSWindow {
override func awakeFromNib() {
let flutterViewController = FlutterViewController.init()
let windowFrame = self.frame
self.contentViewController = flutterViewController
self.setFrame(windowFrame, display: true)
RegisterGeneratedPlugins(registry: flutterViewController)
super.awakeFromNib()
}
}

8
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>com.apple.security.app-sandbox</key>
<true/>
</dict>
</plist>

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example/pubspec.yaml Normal file
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name: webview_cef_example
description: Demonstrates how to use the webview_cef plugin.
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
environment:
sdk: ">=2.17.1 <3.0.0"
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
webview_cef:
# When depending on this package from a real application you should use:
# webview_cef: ^x.y.z
# See https://dart.dev/tools/pub/dependencies#version-constraints
# The example app is bundled with the plugin so we use a path dependency on
# the parent directory to use the current plugin's version.
path: ../
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
dev_dependencies:
flutter_test:
sdk: flutter
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^2.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter packages.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages

27
example/test/widget_test.dart Normal file
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// This is a basic Flutter widget test.
//
// To perform an interaction with a widget in your test, use the WidgetTester
// utility in the flutter_test package. For example, you can send tap and scroll
// gestures. You can also use WidgetTester to find child widgets in the widget
// tree, read text, and verify that the values of widget properties are correct.
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:webview_cef_example/main.dart';
void main() {
testWidgets('Verify Platform version', (WidgetTester tester) async {
// Build our app and trigger a frame.
await tester.pumpWidget(const MyApp());
// Verify that platform version is retrieved.
expect(
find.byWidgetPredicate(
(Widget widget) => widget is Text &&
widget.data!.startsWith('Running on:'),
),
findsOneWidget,
);
});
}

17
example/windows/.gitignore vendored Normal file
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flutter/ephemeral/
# Visual Studio user-specific files.
*.suo
*.user
*.userosscache
*.sln.docstates
# Visual Studio build-related files.
x64/
x86/
# Visual Studio cache files
# files ending in .cache can be ignored
*.[Cc]ache
# but keep track of directories ending in .cache
!*.[Cc]ache/

101
example/windows/CMakeLists.txt Normal file
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# Project-level configuration.
cmake_minimum_required(VERSION 3.14)
project(webview_cef_example LANGUAGES CXX)
# The name of the executable created for the application. Change this to change
# the on-disk name of your application.
set(BINARY_NAME "webview_cef_example")
# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
# versions of CMake.
cmake_policy(SET CMP0063 NEW)
# Define build configuration option.
get_property(IS_MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if(IS_MULTICONFIG)
set(CMAKE_CONFIGURATION_TYPES "Debug;Profile;Release"
CACHE STRING "" FORCE)
else()
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
set(CMAKE_BUILD_TYPE "Debug" CACHE
STRING "Flutter build mode" FORCE)
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
"Debug" "Profile" "Release")
endif()
endif()
# Define settings for the Profile build mode.
set(CMAKE_EXE_LINKER_FLAGS_PROFILE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE}")
set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
# Use Unicode for all projects.
add_definitions(-DUNICODE -D_UNICODE)
# Compilation settings that should be applied to most targets.
#
# Be cautious about adding new options here, as plugins use this function by
# default. In most cases, you should add new options to specific targets instead
# of modifying this function.
function(APPLY_STANDARD_SETTINGS TARGET)
target_compile_features(${TARGET} PUBLIC cxx_std_17)
target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100")
target_compile_options(${TARGET} PRIVATE /EHsc)
target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")
endfunction()
# Flutter library and tool build rules.
set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
add_subdirectory(${FLUTTER_MANAGED_DIR})
# Application build; see runner/CMakeLists.txt.
add_subdirectory("runner")
# Generated plugin build rules, which manage building the plugins and adding
# them to the application.
include(flutter/generated_plugins.cmake)
# === Installation ===
# Support files are copied into place next to the executable, so that it can
# run in place. This is done instead of making a separate bundle (as on Linux)
# so that building and running from within Visual Studio will work.
set(BUILD_BUNDLE_DIR "$<TARGET_FILE_DIR:${BINARY_NAME}>")
# Make the "install" step default, as it's required to run.
set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1)
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
endif()
set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}")
install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
COMPONENT Runtime)
install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
COMPONENT Runtime)
install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
COMPONENT Runtime)
if(PLUGIN_BUNDLED_LIBRARIES)
install(FILES "${PLUGIN_BUNDLED_LIBRARIES}"
DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
COMPONENT Runtime)
endif()
# Fully re-copy the assets directory on each build to avoid having stale files
# from a previous install.
set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
install(CODE "
file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
" COMPONENT Runtime)
install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
# Install the AOT library on non-Debug builds only.
install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
CONFIGURATIONS Profile;Release
COMPONENT Runtime)

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# This file controls Flutter-level build steps. It should not be edited.
cmake_minimum_required(VERSION 3.14)
set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
# Configuration provided via flutter tool.
include(${EPHEMERAL_DIR}/generated_config.cmake)
# TODO: Move the rest of this into files in ephemeral. See
# https://github.com/flutter/flutter/issues/57146.
set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper")
# === Flutter Library ===
set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll")
# Published to parent scope for install step.
set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
set(AOT_LIBRARY "${PROJECT_DIR}/build/windows/app.so" PARENT_SCOPE)
list(APPEND FLUTTER_LIBRARY_HEADERS
"flutter_export.h"
"flutter_windows.h"
"flutter_messenger.h"
"flutter_plugin_registrar.h"
"flutter_texture_registrar.h"
)
list(TRANSFORM FLUTTER_LIBRARY_HEADERS PREPEND "${EPHEMERAL_DIR}/")
add_library(flutter INTERFACE)
target_include_directories(flutter INTERFACE
"${EPHEMERAL_DIR}"
)
target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}.lib")
add_dependencies(flutter flutter_assemble)
# === Wrapper ===
list(APPEND CPP_WRAPPER_SOURCES_CORE
"core_implementations.cc"
"standard_codec.cc"
)
list(TRANSFORM CPP_WRAPPER_SOURCES_CORE PREPEND "${WRAPPER_ROOT}/")
list(APPEND CPP_WRAPPER_SOURCES_PLUGIN
"plugin_registrar.cc"
)
list(TRANSFORM CPP_WRAPPER_SOURCES_PLUGIN PREPEND "${WRAPPER_ROOT}/")
list(APPEND CPP_WRAPPER_SOURCES_APP
"flutter_engine.cc"
"flutter_view_controller.cc"
)
list(TRANSFORM CPP_WRAPPER_SOURCES_APP PREPEND "${WRAPPER_ROOT}/")
# Wrapper sources needed for a plugin.
add_library(flutter_wrapper_plugin STATIC
${CPP_WRAPPER_SOURCES_CORE}
${CPP_WRAPPER_SOURCES_PLUGIN}
)
apply_standard_settings(flutter_wrapper_plugin)
set_target_properties(flutter_wrapper_plugin PROPERTIES
POSITION_INDEPENDENT_CODE ON)
set_target_properties(flutter_wrapper_plugin PROPERTIES
CXX_VISIBILITY_PRESET hidden)
target_link_libraries(flutter_wrapper_plugin PUBLIC flutter)
target_include_directories(flutter_wrapper_plugin PUBLIC
"${WRAPPER_ROOT}/include"
)
add_dependencies(flutter_wrapper_plugin flutter_assemble)
# Wrapper sources needed for the runner.
add_library(flutter_wrapper_app STATIC
${CPP_WRAPPER_SOURCES_CORE}
${CPP_WRAPPER_SOURCES_APP}
)
apply_standard_settings(flutter_wrapper_app)
target_link_libraries(flutter_wrapper_app PUBLIC flutter)
target_include_directories(flutter_wrapper_app PUBLIC
"${WRAPPER_ROOT}/include"
)
add_dependencies(flutter_wrapper_app flutter_assemble)
# === Flutter tool backend ===
# _phony_ is a non-existent file to force this command to run every time,
# since currently there's no way to get a full input/output list from the
# flutter tool.
set(PHONY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/_phony_")
set_source_files_properties("${PHONY_OUTPUT}" PROPERTIES SYMBOLIC TRUE)
add_custom_command(
OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
${CPP_WRAPPER_SOURCES_CORE} ${CPP_WRAPPER_SOURCES_PLUGIN}
${CPP_WRAPPER_SOURCES_APP}
${PHONY_OUTPUT}
COMMAND ${CMAKE_COMMAND} -E env
${FLUTTER_TOOL_ENVIRONMENT}
"${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat"
windows-x64 $<CONFIG>
VERBATIM
)
add_custom_target(flutter_assemble DEPENDS
"${FLUTTER_LIBRARY}"
${FLUTTER_LIBRARY_HEADERS}
${CPP_WRAPPER_SOURCES_CORE}
${CPP_WRAPPER_SOURCES_PLUGIN}
${CPP_WRAPPER_SOURCES_APP}
)

14
example/windows/flutter/generated_plugin_registrant.cc Normal file
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//
// Generated file. Do not edit.
//
// clang-format off
#include "generated_plugin_registrant.h"
#include <webview_cef/webview_cef_plugin_c_api.h>
void RegisterPlugins(flutter::PluginRegistry* registry) {
WebviewCefPluginCApiRegisterWithRegistrar(
registry->GetRegistrarForPlugin("WebviewCefPluginCApi"));
}

15
example/windows/flutter/generated_plugin_registrant.h Normal file
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@@ -0,0 +1,15 @@
//
// Generated file. Do not edit.
//
// clang-format off
#ifndef GENERATED_PLUGIN_REGISTRANT_
#define GENERATED_PLUGIN_REGISTRANT_
#include <flutter/plugin_registry.h>
// Registers Flutter plugins.
void RegisterPlugins(flutter::PluginRegistry* registry);
#endif // GENERATED_PLUGIN_REGISTRANT_

24
example/windows/flutter/generated_plugins.cmake Normal file
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@@ -0,0 +1,24 @@
#
# Generated file, do not edit.
#
list(APPEND FLUTTER_PLUGIN_LIST
webview_cef
)
list(APPEND FLUTTER_FFI_PLUGIN_LIST
)
set(PLUGIN_BUNDLED_LIBRARIES)
foreach(plugin ${FLUTTER_PLUGIN_LIST})
add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/windows plugins/${plugin})
target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
endforeach(plugin)
foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/windows plugins/${ffi_plugin})
list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
endforeach(ffi_plugin)

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cmake_minimum_required(VERSION 3.14)
project(runner LANGUAGES CXX)
# Define the application target. To change its name, change BINARY_NAME in the
# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
# work.
#
# Any new source files that you add to the application should be added here.
add_executable(${BINARY_NAME} WIN32
"flutter_window.cpp"
"main.cpp"
"utils.cpp"
"win32_window.cpp"
"${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
"Runner.rc"
"runner.exe.manifest"
)
# Apply the standard set of build settings. This can be removed for applications
# that need different build settings.
apply_standard_settings(${BINARY_NAME})
# Disable Windows macros that collide with C++ standard library functions.
target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
# Add dependency libraries and include directories. Add any application-specific
# dependencies here.
target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
# Run the Flutter tool portions of the build. This must not be removed.
add_dependencies(${BINARY_NAME} flutter_assemble)

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// Microsoft Visual C++ generated resource script.
//
#pragma code_page(65001)
#include "resource.h"
#define APSTUDIO_READONLY_SYMBOLS
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 2 resource.
//
#include "winres.h"
/////////////////////////////////////////////////////////////////////////////
#undef APSTUDIO_READONLY_SYMBOLS
/////////////////////////////////////////////////////////////////////////////
// English (United States) resources
#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
#ifdef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// TEXTINCLUDE
//
1 TEXTINCLUDE
BEGIN
"resource.h\0"
END
2 TEXTINCLUDE
BEGIN
"#include ""winres.h""\r\n"
"\0"
END
3 TEXTINCLUDE
BEGIN
"\r\n"
"\0"
END
#endif // APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Icon
//
// Icon with lowest ID value placed first to ensure application icon
// remains consistent on all systems.
IDI_APP_ICON ICON "resources\\app_icon.ico"
/////////////////////////////////////////////////////////////////////////////
//
// Version
//
#ifdef FLUTTER_BUILD_NUMBER
#define VERSION_AS_NUMBER FLUTTER_BUILD_NUMBER
#else
#define VERSION_AS_NUMBER 1,0,0
#endif
#ifdef FLUTTER_BUILD_NAME
#define VERSION_AS_STRING #FLUTTER_BUILD_NAME
#else
#define VERSION_AS_STRING "1.0.0"
#endif
VS_VERSION_INFO VERSIONINFO
FILEVERSION VERSION_AS_NUMBER
PRODUCTVERSION VERSION_AS_NUMBER
FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
#ifdef _DEBUG
FILEFLAGS VS_FF_DEBUG
#else
FILEFLAGS 0x0L
#endif
FILEOS VOS__WINDOWS32
FILETYPE VFT_APP
FILESUBTYPE 0x0L
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904e4"
BEGIN
VALUE "CompanyName", "com.electronicdream" "\0"
VALUE "FileDescription", "webview_cef_example" "\0"
VALUE "FileVersion", VERSION_AS_STRING "\0"
VALUE "InternalName", "webview_cef_example" "\0"
VALUE "LegalCopyright", "Copyright (C) 2022 com.electronicdream. All rights reserved." "\0"
VALUE "OriginalFilename", "webview_cef_example.exe" "\0"
VALUE "ProductName", "webview_cef_example" "\0"
VALUE "ProductVersion", VERSION_AS_STRING "\0"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 1252
END
END
#endif // English (United States) resources
/////////////////////////////////////////////////////////////////////////////
#ifndef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 3 resource.
//
/////////////////////////////////////////////////////////////////////////////
#endif // not APSTUDIO_INVOKED

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#include "flutter_window.h"
#include <optional>
#include "flutter/generated_plugin_registrant.h"
FlutterWindow::FlutterWindow(const flutter::DartProject& project)
: project_(project) {}
FlutterWindow::~FlutterWindow() {}
bool FlutterWindow::OnCreate() {
if (!Win32Window::OnCreate()) {
return false;
}
RECT frame = GetClientArea();
// The size here must match the window dimensions to avoid unnecessary surface
// creation / destruction in the startup path.
flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
frame.right - frame.left, frame.bottom - frame.top, project_);
// Ensure that basic setup of the controller was successful.
if (!flutter_controller_->engine() || !flutter_controller_->view()) {
return false;
}
RegisterPlugins(flutter_controller_->engine());
SetChildContent(flutter_controller_->view()->GetNativeWindow());
return true;
}
void FlutterWindow::OnDestroy() {
if (flutter_controller_) {
flutter_controller_ = nullptr;
}
Win32Window::OnDestroy();
}
LRESULT
FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
WPARAM const wparam,
LPARAM const lparam) noexcept {
// Give Flutter, including plugins, an opportunity to handle window messages.
if (flutter_controller_) {
std::optional<LRESULT> result =
flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
lparam);
if (result) {
return *result;
}
}
switch (message) {
case WM_FONTCHANGE:
flutter_controller_->engine()->ReloadSystemFonts();
break;
}
return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
}

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#ifndef RUNNER_FLUTTER_WINDOW_H_
#define RUNNER_FLUTTER_WINDOW_H_
#include <flutter/dart_project.h>
#include <flutter/flutter_view_controller.h>
#include <memory>
#include "win32_window.h"
// A window that does nothing but host a Flutter view.
class FlutterWindow : public Win32Window {
public:
// Creates a new FlutterWindow hosting a Flutter view running |project|.
explicit FlutterWindow(const flutter::DartProject& project);
virtual ~FlutterWindow();
protected:
// Win32Window:
bool OnCreate() override;
void OnDestroy() override;
LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam,
LPARAM const lparam) noexcept override;
private:
// The project to run.
flutter::DartProject project_;
// The Flutter instance hosted by this window.
std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
};
#endif // RUNNER_FLUTTER_WINDOW_H_

43
example/windows/runner/main.cpp Normal file
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#include <flutter/dart_project.h>
#include <flutter/flutter_view_controller.h>
#include <windows.h>
#include "flutter_window.h"
#include "utils.h"
int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
_In_ wchar_t *command_line, _In_ int show_command) {
// Attach to console when present (e.g., 'flutter run') or create a
// new console when running with a debugger.
if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {
CreateAndAttachConsole();
}
// Initialize COM, so that it is available for use in the library and/or
// plugins.
::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
flutter::DartProject project(L"data");
std::vector<std::string> command_line_arguments =
GetCommandLineArguments();
project.set_dart_entrypoint_arguments(std::move(command_line_arguments));
FlutterWindow window(project);
Win32Window::Point origin(10, 10);
Win32Window::Size size(1280, 720);
if (!window.CreateAndShow(L"webview_cef_example", origin, size)) {
return EXIT_FAILURE;
}
window.SetQuitOnClose(true);
::MSG msg;
while (::GetMessage(&msg, nullptr, 0, 0)) {
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
::CoUninitialize();
return EXIT_SUCCESS;
}

16
example/windows/runner/resource.h Normal file
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//{{NO_DEPENDENCIES}}
// Microsoft Visual C++ generated include file.
// Used by Runner.rc
//
#define IDI_APP_ICON 101
// Next default values for new objects
//
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE 102
#define _APS_NEXT_COMMAND_VALUE 40001
#define _APS_NEXT_CONTROL_VALUE 1001
#define _APS_NEXT_SYMED_VALUE 101
#endif
#endif

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20
example/windows/runner/runner.exe.manifest Normal file
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<application xmlns="urn:schemas-microsoft-com:asm.v3">
<windowsSettings>
<dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
</windowsSettings>
</application>
<compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
<application>
<!-- Windows 10 -->
<supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
<!-- Windows 8.1 -->
<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
<!-- Windows 8 -->
<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
<!-- Windows 7 -->
<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
</application>
</compatibility>
</assembly>

64
example/windows/runner/utils.cpp Normal file
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#include "utils.h"
#include <flutter_windows.h>
#include <io.h>
#include <stdio.h>
#include <windows.h>
#include <iostream>
void CreateAndAttachConsole() {
if (::AllocConsole()) {
FILE *unused;
if (freopen_s(&unused, "CONOUT$", "w", stdout)) {
_dup2(_fileno(stdout), 1);
}
if (freopen_s(&unused, "CONOUT$", "w", stderr)) {
_dup2(_fileno(stdout), 2);
}
std::ios::sync_with_stdio();
FlutterDesktopResyncOutputStreams();
}
}
std::vector<std::string> GetCommandLineArguments() {
// Convert the UTF-16 command line arguments to UTF-8 for the Engine to use.
int argc;
wchar_t** argv = ::CommandLineToArgvW(::GetCommandLineW(), &argc);
if (argv == nullptr) {
return std::vector<std::string>();
}
std::vector<std::string> command_line_arguments;
// Skip the first argument as it's the binary name.
for (int i = 1; i < argc; i++) {
command_line_arguments.push_back(Utf8FromUtf16(argv[i]));
}
::LocalFree(argv);
return command_line_arguments;
}
std::string Utf8FromUtf16(const wchar_t* utf16_string) {
if (utf16_string == nullptr) {
return std::string();
}
int target_length = ::WideCharToMultiByte(
CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
-1, nullptr, 0, nullptr, nullptr);
std::string utf8_string;
if (target_length == 0 || target_length > utf8_string.max_size()) {
return utf8_string;
}
utf8_string.resize(target_length);
int converted_length = ::WideCharToMultiByte(
CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
-1, utf8_string.data(),
target_length, nullptr, nullptr);
if (converted_length == 0) {
return std::string();
}
return utf8_string;
}

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example/windows/runner/utils.h Normal file
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#ifndef RUNNER_UTILS_H_
#define RUNNER_UTILS_H_
#include <string>
#include <vector>
// Creates a console for the process, and redirects stdout and stderr to
// it for both the runner and the Flutter library.
void CreateAndAttachConsole();
// Takes a null-terminated wchar_t* encoded in UTF-16 and returns a std::string
// encoded in UTF-8. Returns an empty std::string on failure.
std::string Utf8FromUtf16(const wchar_t* utf16_string);
// Gets the command line arguments passed in as a std::vector<std::string>,
// encoded in UTF-8. Returns an empty std::vector<std::string> on failure.
std::vector<std::string> GetCommandLineArguments();
#endif // RUNNER_UTILS_H_

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example/windows/runner/win32_window.cpp Normal file
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#include "win32_window.h"
#include <flutter_windows.h>
#include "resource.h"
namespace {
constexpr const wchar_t kWindowClassName[] = L"FLUTTER_RUNNER_WIN32_WINDOW";
// The number of Win32Window objects that currently exist.
static int g_active_window_count = 0;
using EnableNonClientDpiScaling = BOOL __stdcall(HWND hwnd);
// Scale helper to convert logical scaler values to physical using passed in
// scale factor
int Scale(int source, double scale_factor) {
return static_cast<int>(source * scale_factor);
}
// Dynamically loads the |EnableNonClientDpiScaling| from the User32 module.
// This API is only needed for PerMonitor V1 awareness mode.
void EnableFullDpiSupportIfAvailable(HWND hwnd) {
HMODULE user32_module = LoadLibraryA("User32.dll");
if (!user32_module) {
return;
}
auto enable_non_client_dpi_scaling =
reinterpret_cast<EnableNonClientDpiScaling*>(
GetProcAddress(user32_module, "EnableNonClientDpiScaling"));
if (enable_non_client_dpi_scaling != nullptr) {
enable_non_client_dpi_scaling(hwnd);
FreeLibrary(user32_module);
}
}
} // namespace
// Manages the Win32Window's window class registration.
class WindowClassRegistrar {
public:
~WindowClassRegistrar() = default;
// Returns the singleton registar instance.
static WindowClassRegistrar* GetInstance() {
if (!instance_) {
instance_ = new WindowClassRegistrar();
}
return instance_;
}
// Returns the name of the window class, registering the class if it hasn't
// previously been registered.
const wchar_t* GetWindowClass();
// Unregisters the window class. Should only be called if there are no
// instances of the window.
void UnregisterWindowClass();
private:
WindowClassRegistrar() = default;
static WindowClassRegistrar* instance_;
bool class_registered_ = false;
};
WindowClassRegistrar* WindowClassRegistrar::instance_ = nullptr;
const wchar_t* WindowClassRegistrar::GetWindowClass() {
if (!class_registered_) {
WNDCLASS window_class{};
window_class.hCursor = LoadCursor(nullptr, IDC_ARROW);
window_class.lpszClassName = kWindowClassName;
window_class.style = CS_HREDRAW | CS_VREDRAW;
window_class.cbClsExtra = 0;
window_class.cbWndExtra = 0;
window_class.hInstance = GetModuleHandle(nullptr);
window_class.hIcon =
LoadIcon(window_class.hInstance, MAKEINTRESOURCE(IDI_APP_ICON));
window_class.hbrBackground = 0;
window_class.lpszMenuName = nullptr;
window_class.lpfnWndProc = Win32Window::WndProc;
RegisterClass(&window_class);
class_registered_ = true;
}
return kWindowClassName;
}
void WindowClassRegistrar::UnregisterWindowClass() {
UnregisterClass(kWindowClassName, nullptr);
class_registered_ = false;
}
Win32Window::Win32Window() {
++g_active_window_count;
}
Win32Window::~Win32Window() {
--g_active_window_count;
Destroy();
}
bool Win32Window::CreateAndShow(const std::wstring& title,
const Point& origin,
const Size& size) {
Destroy();
const wchar_t* window_class =
WindowClassRegistrar::GetInstance()->GetWindowClass();
const POINT target_point = {static_cast<LONG>(origin.x),
static_cast<LONG>(origin.y)};
HMONITOR monitor = MonitorFromPoint(target_point, MONITOR_DEFAULTTONEAREST);
UINT dpi = FlutterDesktopGetDpiForMonitor(monitor);
double scale_factor = dpi / 96.0;
HWND window = CreateWindow(
window_class, title.c_str(), WS_OVERLAPPEDWINDOW | WS_VISIBLE,
Scale(origin.x, scale_factor), Scale(origin.y, scale_factor),
Scale(size.width, scale_factor), Scale(size.height, scale_factor),
nullptr, nullptr, GetModuleHandle(nullptr), this);
if (!window) {
return false;
}
return OnCreate();
}
// static
LRESULT CALLBACK Win32Window::WndProc(HWND const window,
UINT const message,
WPARAM const wparam,
LPARAM const lparam) noexcept {
if (message == WM_NCCREATE) {
auto window_struct = reinterpret_cast<CREATESTRUCT*>(lparam);
SetWindowLongPtr(window, GWLP_USERDATA,
reinterpret_cast<LONG_PTR>(window_struct->lpCreateParams));
auto that = static_cast<Win32Window*>(window_struct->lpCreateParams);
EnableFullDpiSupportIfAvailable(window);
that->window_handle_ = window;
} else if (Win32Window* that = GetThisFromHandle(window)) {
return that->MessageHandler(window, message, wparam, lparam);
}
return DefWindowProc(window, message, wparam, lparam);
}
LRESULT
Win32Window::MessageHandler(HWND hwnd,
UINT const message,
WPARAM const wparam,
LPARAM const lparam) noexcept {
switch (message) {
case WM_DESTROY:
window_handle_ = nullptr;
Destroy();
if (quit_on_close_) {
PostQuitMessage(0);
}
return 0;
case WM_DPICHANGED: {
auto newRectSize = reinterpret_cast<RECT*>(lparam);
LONG newWidth = newRectSize->right - newRectSize->left;
LONG newHeight = newRectSize->bottom - newRectSize->top;
SetWindowPos(hwnd, nullptr, newRectSize->left, newRectSize->top, newWidth,
newHeight, SWP_NOZORDER | SWP_NOACTIVATE);
return 0;
}
case WM_SIZE: {
RECT rect = GetClientArea();
if (child_content_ != nullptr) {
// Size and position the child window.
MoveWindow(child_content_, rect.left, rect.top, rect.right - rect.left,
rect.bottom - rect.top, TRUE);
}
return 0;
}
case WM_ACTIVATE:
if (child_content_ != nullptr) {
SetFocus(child_content_);
}
return 0;
}
return DefWindowProc(window_handle_, message, wparam, lparam);
}
void Win32Window::Destroy() {
OnDestroy();
if (window_handle_) {
DestroyWindow(window_handle_);
window_handle_ = nullptr;
}
if (g_active_window_count == 0) {
WindowClassRegistrar::GetInstance()->UnregisterWindowClass();
}
}
Win32Window* Win32Window::GetThisFromHandle(HWND const window) noexcept {
return reinterpret_cast<Win32Window*>(
GetWindowLongPtr(window, GWLP_USERDATA));
}
void Win32Window::SetChildContent(HWND content) {
child_content_ = content;
SetParent(content, window_handle_);
RECT frame = GetClientArea();
MoveWindow(content, frame.left, frame.top, frame.right - frame.left,
frame.bottom - frame.top, true);
SetFocus(child_content_);
}
RECT Win32Window::GetClientArea() {
RECT frame;
GetClientRect(window_handle_, &frame);
return frame;
}
HWND Win32Window::GetHandle() {
return window_handle_;
}
void Win32Window::SetQuitOnClose(bool quit_on_close) {
quit_on_close_ = quit_on_close;
}
bool Win32Window::OnCreate() {
// No-op; provided for subclasses.
return true;
}
void Win32Window::OnDestroy() {
// No-op; provided for subclasses.
}

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#ifndef RUNNER_WIN32_WINDOW_H_
#define RUNNER_WIN32_WINDOW_H_
#include <windows.h>
#include <functional>
#include <memory>
#include <string>
// A class abstraction for a high DPI-aware Win32 Window. Intended to be
// inherited from by classes that wish to specialize with custom
// rendering and input handling
class Win32Window {
public:
struct Point {
unsigned int x;
unsigned int y;
Point(unsigned int x, unsigned int y) : x(x), y(y) {}
};
struct Size {
unsigned int width;
unsigned int height;
Size(unsigned int width, unsigned int height)
: width(width), height(height) {}
};
Win32Window();
virtual ~Win32Window();
// Creates and shows a win32 window with |title| and position and size using
// |origin| and |size|. New windows are created on the default monitor. Window
// sizes are specified to the OS in physical pixels, hence to ensure a
// consistent size to will treat the width height passed in to this function
// as logical pixels and scale to appropriate for the default monitor. Returns
// true if the window was created successfully.
bool CreateAndShow(const std::wstring& title,
const Point& origin,
const Size& size);
// Release OS resources associated with window.
void Destroy();
// Inserts |content| into the window tree.
void SetChildContent(HWND content);
// Returns the backing Window handle to enable clients to set icon and other
// window properties. Returns nullptr if the window has been destroyed.
HWND GetHandle();
// If true, closing this window will quit the application.
void SetQuitOnClose(bool quit_on_close);
// Return a RECT representing the bounds of the current client area.
RECT GetClientArea();
protected:
// Processes and route salient window messages for mouse handling,
// size change and DPI. Delegates handling of these to member overloads that
// inheriting classes can handle.
virtual LRESULT MessageHandler(HWND window,
UINT const message,
WPARAM const wparam,
LPARAM const lparam) noexcept;
// Called when CreateAndShow is called, allowing subclass window-related
// setup. Subclasses should return false if setup fails.
virtual bool OnCreate();
// Called when Destroy is called.
virtual void OnDestroy();
private:
friend class WindowClassRegistrar;
// OS callback called by message pump. Handles the WM_NCCREATE message which
// is passed when the non-client area is being created and enables automatic
// non-client DPI scaling so that the non-client area automatically
// responsponds to changes in DPI. All other messages are handled by
// MessageHandler.
static LRESULT CALLBACK WndProc(HWND const window,
UINT const message,
WPARAM const wparam,
LPARAM const lparam) noexcept;
// Retrieves a class instance pointer for |window|
static Win32Window* GetThisFromHandle(HWND const window) noexcept;
bool quit_on_close_ = false;
// window handle for top level window.
HWND window_handle_ = nullptr;
// window handle for hosted content.
HWND child_content_ = nullptr;
};
#endif // RUNNER_WIN32_WINDOW_H_

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import 'webview_cef_platform_interface.dart';
class WebviewCef {
Future<String?> getPlatformVersion() {
return WebviewCefPlatform.instance.getPlatformVersion();
}
}

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import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';
import 'webview_cef_platform_interface.dart';
/// An implementation of [WebviewCefPlatform] that uses method channels.
class MethodChannelWebviewCef extends WebviewCefPlatform {
/// The method channel used to interact with the native platform.
@visibleForTesting
final methodChannel = const MethodChannel('webview_cef');
@override
Future<String?> getPlatformVersion() async {
final version = await methodChannel.invokeMethod<String>('getPlatformVersion');
return version;
}
}

29
lib/webview_cef_platform_interface.dart Normal file
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import 'package:plugin_platform_interface/plugin_platform_interface.dart';
import 'webview_cef_method_channel.dart';
abstract class WebviewCefPlatform extends PlatformInterface {
/// Constructs a WebviewCefPlatform.
WebviewCefPlatform() : super(token: _token);
static final Object _token = Object();
static WebviewCefPlatform _instance = MethodChannelWebviewCef();
/// The default instance of [WebviewCefPlatform] to use.
///
/// Defaults to [MethodChannelWebviewCef].
static WebviewCefPlatform get instance => _instance;
/// Platform-specific implementations should set this with their own
/// platform-specific class that extends [WebviewCefPlatform] when
/// they register themselves.
static set instance(WebviewCefPlatform instance) {
PlatformInterface.verifyToken(instance, _token);
_instance = instance;
}
Future<String?> getPlatformVersion() {
throw UnimplementedError('platformVersion() has not been implemented.');
}
}

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macos/Classes/WebviewCefPlugin.swift Normal file
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import Cocoa
import FlutterMacOS
public class WebviewCefPlugin: NSObject, FlutterPlugin {
public static func register(with registrar: FlutterPluginRegistrar) {
let channel = FlutterMethodChannel(name: "webview_cef", binaryMessenger: registrar.messenger)
let instance = WebviewCefPlugin()
registrar.addMethodCallDelegate(instance, channel: channel)
}
public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
switch call.method {
case "getPlatformVersion":
result("macOS " + ProcessInfo.processInfo.operatingSystemVersionString)
default:
result(FlutterMethodNotImplemented)
}
}
}

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#
# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
# Run `pod lib lint webview_cef.podspec` to validate before publishing.
#
Pod::Spec.new do |s|
s.name = 'webview_cef'
s.version = '0.0.1'
s.summary = 'Flutter webview backed by CEF (Chromium Embedded Framework)'
s.description = <<-DESC
Flutter webview backed by CEF (Chromium Embedded Framework)
DESC
s.homepage = 'http://example.com'
s.license = { :file => '../LICENSE' }
s.author = { 'Your Company' => 'email@example.com' }
s.source = { :path => '.' }
s.source_files = 'Classes/**/*'
s.dependency 'FlutterMacOS'
s.platform = :osx, '10.11'
s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
s.swift_version = '5.0'
end

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name: webview_cef
description: Flutter webview backed by CEF (Chromium Embedded Framework)
version: 0.0.1
homepage:
environment:
sdk: ">=2.17.1 <3.0.0"
flutter: ">=2.5.0"
dependencies:
flutter:
sdk: flutter
plugin_platform_interface: ^2.0.2
dev_dependencies:
flutter_test:
sdk: flutter
flutter_lints: ^2.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter packages.
flutter:
# This section identifies this Flutter project as a plugin project.
# The 'pluginClass' specifies the class (in Java, Kotlin, Swift, Objective-C, etc.)
# which should be registered in the plugin registry. This is required for
# using method channels.
# The Android 'package' specifies package in which the registered class is.
# This is required for using method channels on Android.
# The 'ffiPlugin' specifies that native code should be built and bundled.
# This is required for using `dart:ffi`.
# All these are used by the tooling to maintain consistency when
# adding or updating assets for this project.
plugin:
platforms:
macos:
pluginClass: WebviewCefPlugin
windows:
pluginClass: WebviewCefPluginCApi
# To add assets to your plugin package, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
#
# For details regarding assets in packages, see
# https://flutter.dev/assets-and-images/#from-packages
#
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware
# To add custom fonts to your plugin package, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts in packages, see
# https://flutter.dev/custom-fonts/#from-packages

24
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import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:webview_cef/webview_cef_method_channel.dart';
void main() {
MethodChannelWebviewCef platform = MethodChannelWebviewCef();
const MethodChannel channel = MethodChannel('webview_cef');
TestWidgetsFlutterBinding.ensureInitialized();
setUp(() {
channel.setMockMethodCallHandler((MethodCall methodCall) async {
return '42';
});
});
tearDown(() {
channel.setMockMethodCallHandler(null);
});
test('getPlatformVersion', () async {
expect(await platform.getPlatformVersion(), '42');
});
}

29
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import 'package:flutter_test/flutter_test.dart';
import 'package:webview_cef/webview_cef.dart';
import 'package:webview_cef/webview_cef_platform_interface.dart';
import 'package:webview_cef/webview_cef_method_channel.dart';
import 'package:plugin_platform_interface/plugin_platform_interface.dart';
class MockWebviewCefPlatform
with MockPlatformInterfaceMixin
implements WebviewCefPlatform {
@override
Future<String?> getPlatformVersion() => Future.value('42');
}
void main() {
final WebviewCefPlatform initialPlatform = WebviewCefPlatform.instance;
test('$MethodChannelWebviewCef is the default instance', () {
expect(initialPlatform, isInstanceOf<MethodChannelWebviewCef>());
});
test('getPlatformVersion', () async {
WebviewCef webviewCefPlugin = WebviewCef();
MockWebviewCefPlatform fakePlatform = MockWebviewCefPlatform();
WebviewCefPlatform.instance = fakePlatform;
expect(await webviewCefPlugin.getPlatformVersion(), '42');
});
}

17
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flutter/
# Visual Studio user-specific files.
*.suo
*.user
*.userosscache
*.sln.docstates
# Visual Studio build-related files.
x64/
x86/
# Visual Studio cache files
# files ending in .cache can be ignored
*.[Cc]ache
# but keep track of directories ending in .cache
!*.[Cc]ache/

53
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# The Flutter tooling requires that developers have a version of Visual Studio
# installed that includes CMake 3.14 or later. You should not increase this
# version, as doing so will cause the plugin to fail to compile for some
# customers of the plugin.
cmake_minimum_required(VERSION 3.14)
# Project-level configuration.
set(PROJECT_NAME "webview_cef")
project(${PROJECT_NAME} LANGUAGES CXX)
# This value is used when generating builds using this plugin, so it must
# not be changed
set(PLUGIN_NAME "webview_cef_plugin")
# Any new source files that you add to the plugin should be added here.
list(APPEND PLUGIN_SOURCES
"webview_cef_plugin.cpp"
"webview_cef_plugin.h"
)
# Define the plugin library target. Its name must not be changed (see comment
# on PLUGIN_NAME above).
add_library(${PLUGIN_NAME} SHARED
"include/webview_cef/webview_cef_plugin_c_api.h"
"webview_cef_plugin_c_api.cpp"
${PLUGIN_SOURCES}
)
# Apply a standard set of build settings that are configured in the
# application-level CMakeLists.txt. This can be removed for plugins that want
# full control over build settings.
apply_standard_settings(${PLUGIN_NAME})
# Symbols are hidden by default to reduce the chance of accidental conflicts
# between plugins. This should not be removed; any symbols that should be
# exported should be explicitly exported with the FLUTTER_PLUGIN_EXPORT macro.
set_target_properties(${PLUGIN_NAME} PROPERTIES
CXX_VISIBILITY_PRESET hidden)
target_compile_definitions(${PLUGIN_NAME} PRIVATE FLUTTER_PLUGIN_IMPL)
# Source include directories and library dependencies. Add any plugin-specific
# dependencies here.
target_include_directories(${PLUGIN_NAME} INTERFACE
"${CMAKE_CURRENT_SOURCE_DIR}/include")
target_link_libraries(${PLUGIN_NAME} PRIVATE flutter flutter_wrapper_plugin)
# List of absolute paths to libraries that should be bundled with the plugin.
# This list could contain prebuilt libraries, or libraries created by an
# external build triggered from this build file.
set(webview_cef_bundled_libraries
""
PARENT_SCOPE
)

88
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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_CEF_ATOMIC_FLAG_H_
#define CEF_INCLUDE_BASE_CEF_ATOMIC_FLAG_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/synchronization/atomic_flag.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <stdint.h>
#include <atomic>
#include "include/base/cef_thread_checker.h"
namespace base {
// A flag that can safely be set from one thread and read from other threads.
//
// This class IS NOT intended for synchronization between threads.
class AtomicFlag {
public:
AtomicFlag();
AtomicFlag(const AtomicFlag&) = delete;
AtomicFlag& operator=(const AtomicFlag&) = delete;
~AtomicFlag();
// Set the flag. Must always be called from the same thread.
void Set();
// Returns true iff the flag was set. If this returns true, the current thread
// is guaranteed to be synchronized with all memory operations on the thread
// which invoked Set() up until at least the first call to Set() on it.
bool IsSet() const {
// Inline here: this has a measurable performance impact on base::WeakPtr.
return flag_.load(std::memory_order_acquire) != 0;
}
// Resets the flag. Be careful when using this: callers might not expect
// IsSet() to return false after returning true once.
void UnsafeResetForTesting();
private:
std::atomic<uint_fast8_t> flag_{0};
base::ThreadChecker set_thread_checker_;
};
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_ATOMIC_FLAG_H_

111
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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// This is a low level implementation of atomic semantics for reference
// counting. Please use cef_ref_counted.h directly instead.
//
// The Chromium implementation includes annotations to avoid some false
// positives when using data race detection tools. Annotations are not
// currently supported by the CEF implementation.
#ifndef CEF_INCLUDE_BASE_CEF_ATOMIC_REF_COUNT_H_
#define CEF_INCLUDE_BASE_CEF_ATOMIC_REF_COUNT_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/atomic_ref_count.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <atomic>
namespace base {
class AtomicRefCount {
public:
constexpr AtomicRefCount() : ref_count_(0) {}
explicit constexpr AtomicRefCount(int initial_value)
: ref_count_(initial_value) {}
// Increment a reference count.
// Returns the previous value of the count.
int Increment() { return Increment(1); }
// Increment a reference count by "increment", which must exceed 0.
// Returns the previous value of the count.
int Increment(int increment) {
return ref_count_.fetch_add(increment, std::memory_order_relaxed);
}
// Decrement a reference count, and return whether the result is non-zero.
// Insert barriers to ensure that state written before the reference count
// became zero will be visible to a thread that has just made the count zero.
bool Decrement() {
// TODO(jbroman): Technically this doesn't need to be an acquire operation
// unless the result is 1 (i.e., the ref count did indeed reach zero).
// However, there are toolchain issues that make that not work as well at
// present (notably TSAN doesn't like it).
return ref_count_.fetch_sub(1, std::memory_order_acq_rel) != 1;
}
// Return whether the reference count is one. If the reference count is used
// in the conventional way, a refrerence count of 1 implies that the current
// thread owns the reference and no other thread shares it. This call
// performs the test for a reference count of one, and performs the memory
// barrier needed for the owning thread to act on the object, knowing that it
// has exclusive access to the object.
bool IsOne() const { return ref_count_.load(std::memory_order_acquire) == 1; }
// Return whether the reference count is zero. With conventional object
// referencing counting, the object will be destroyed, so the reference count
// should never be zero. Hence this is generally used for a debug check.
bool IsZero() const {
return ref_count_.load(std::memory_order_acquire) == 0;
}
// Returns the current reference count (with no barriers). This is subtle, and
// should be used only for debugging.
int SubtleRefCountForDebug() const {
return ref_count_.load(std::memory_order_relaxed);
}
private:
std::atomic_int ref_count_;
};
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_ATOMIC_REF_COUNT_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// base::AutoReset<> is useful for setting a variable to a new value only within
// a particular scope. An base::AutoReset<> object resets a variable to its
// original value upon destruction, making it an alternative to writing
// "var = false;" or "var = old_val;" at all of a block's exit points.
//
// This should be obvious, but note that an base::AutoReset<> instance should
// have a shorter lifetime than its scoped_variable, to prevent invalid memory
// writes when the base::AutoReset<> object is destroyed.
#ifndef CEF_INCLUDE_BASE_CEF_AUTO_RESET_H_
#define CEF_INCLUDE_BASE_CEF_AUTO_RESET_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/auto_reset.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <utility>
namespace base {
template <typename T>
class AutoReset {
public:
template <typename U>
AutoReset(T* scoped_variable, U&& new_value)
: scoped_variable_(scoped_variable),
original_value_(
std::exchange(*scoped_variable_, std::forward<U>(new_value))) {}
AutoReset(AutoReset&& other)
: scoped_variable_(std::exchange(other.scoped_variable_, nullptr)),
original_value_(std::move(other.original_value_)) {}
AutoReset& operator=(AutoReset&& rhs) {
scoped_variable_ = std::exchange(rhs.scoped_variable_, nullptr);
original_value_ = std::move(rhs.original_value_);
return *this;
}
~AutoReset() {
if (scoped_variable_)
*scoped_variable_ = std::move(original_value_);
}
private:
T* scoped_variable_;
T original_value_;
};
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_AUTO_RESET_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_CEF_BASICTYPES_H_
#define CEF_INCLUDE_BASE_CEF_BASICTYPES_H_
#pragma once
#include <limits.h> // For UINT_MAX
#include <stddef.h> // For size_t
#include "include/base/cef_build.h"
// The NSPR system headers define 64-bit as |long| when possible, except on
// Mac OS X. In order to not have typedef mismatches, we do the same on LP64.
//
// On Mac OS X, |long long| is used for 64-bit types for compatibility with
// <inttypes.h> format macros even in the LP64 model.
#if defined(__LP64__) && !defined(OS_MAC) && !defined(OS_OPENBSD)
typedef long int64;
typedef unsigned long uint64;
#else
typedef long long int64;
typedef unsigned long long uint64;
#endif
// TODO: Remove these type guards. These are to avoid conflicts with
// obsolete/protypes.h in the Gecko SDK.
#ifndef _INT32
#define _INT32
typedef int int32;
#endif
// TODO: Remove these type guards. These are to avoid conflicts with
// obsolete/protypes.h in the Gecko SDK.
#ifndef _UINT32
#define _UINT32
typedef unsigned int uint32;
#endif
#ifndef _INT16
#define _INT16
typedef short int16;
#endif
#ifndef _UINT16
#define _UINT16
typedef unsigned short uint16;
#endif
// UTF-16 character type.
#ifndef char16
#if defined(WCHAR_T_IS_UTF16)
typedef wchar_t char16;
#elif defined(WCHAR_T_IS_UTF32)
typedef unsigned short char16;
#endif
#endif
#endif // CEF_INCLUDE_BASE_CEF_BASICTYPES_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// -----------------------------------------------------------------------------
// Usage documentation
// -----------------------------------------------------------------------------
//
// Overview:
// base::BindOnce() and base::BindRepeating() are helpers for creating
// base::OnceCallback and base::RepeatingCallback objects respectively.
//
// For a runnable object of n-arity, the base::Bind*() family allows partial
// application of the first m arguments. The remaining n - m arguments must be
// passed when invoking the callback with Run().
//
// // The first argument is bound at callback creation; the remaining
// // two must be passed when calling Run() on the callback object.
// base::OnceCallback<long(int, long)> cb = base::BindOnce(
// [](short x, int y, long z) { return x * y * z; }, 42);
//
// When binding to a method, the receiver object must also be specified at
// callback creation time. When Run() is invoked, the method will be invoked on
// the specified receiver object.
//
// class C : public base::RefCounted<C> { void F(); };
// auto instance = base::MakeRefCounted<C>();
// auto cb = base::BindOnce(&C::F, instance);
// std::move(cb).Run(); // Identical to instance->F()
//
// See //docs/callback.md for the full documentation.
//
// -----------------------------------------------------------------------------
// Implementation notes
// -----------------------------------------------------------------------------
//
// If you're reading the implementation, before proceeding further, you should
// read the top comment of base/internal/cef_bind_internal.h for a definition of
// common terms and concepts.
#ifndef CEF_INCLUDE_BASE_CEF_BIND_H_
#define CEF_INCLUDE_BASE_CEF_BIND_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/bind.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <functional>
#include <memory>
#include <type_traits>
#include <utility>
#include "include/base/cef_build.h"
#include "include/base/cef_compiler_specific.h"
#include "include/base/cef_template_util.h"
#include "include/base/internal/cef_bind_internal.h"
#if defined(OS_APPLE) && !HAS_FEATURE(objc_arc)
#include "include/base/internal/cef_scoped_block_mac.h"
#endif
namespace base {
// Bind as OnceCallback.
template <typename Functor, typename... Args>
inline OnceCallback<internal::MakeUnboundRunType<Functor, Args...>> BindOnce(
Functor&& functor,
Args&&... args) {
static_assert(!internal::IsOnceCallback<std::decay_t<Functor>>() ||
(std::is_rvalue_reference<Functor&&>() &&
!std::is_const<std::remove_reference_t<Functor>>()),
"BindOnce requires non-const rvalue for OnceCallback binding."
" I.e.: base::BindOnce(std::move(callback)).");
static_assert(
conjunction<
internal::AssertBindArgIsNotBasePassed<std::decay_t<Args>>...>::value,
"Use std::move() instead of base::Passed() with base::BindOnce()");
return internal::BindImpl<OnceCallback>(std::forward<Functor>(functor),
std::forward<Args>(args)...);
}
// Bind as RepeatingCallback.
template <typename Functor, typename... Args>
inline RepeatingCallback<internal::MakeUnboundRunType<Functor, Args...>>
BindRepeating(Functor&& functor, Args&&... args) {
static_assert(
!internal::IsOnceCallback<std::decay_t<Functor>>(),
"BindRepeating cannot bind OnceCallback. Use BindOnce with std::move().");
return internal::BindImpl<RepeatingCallback>(std::forward<Functor>(functor),
std::forward<Args>(args)...);
}
// Special cases for binding to a base::Callback without extra bound arguments.
// We CHECK() the validity of callback to guard against null pointers
// accidentally ending up in posted tasks, causing hard-to-debug crashes.
template <typename Signature>
OnceCallback<Signature> BindOnce(OnceCallback<Signature> callback) {
CHECK(callback);
return callback;
}
template <typename Signature>
OnceCallback<Signature> BindOnce(RepeatingCallback<Signature> callback) {
CHECK(callback);
return callback;
}
template <typename Signature>
RepeatingCallback<Signature> BindRepeating(
RepeatingCallback<Signature> callback) {
CHECK(callback);
return callback;
}
// Unretained() allows binding a non-refcounted class, and to disable
// refcounting on arguments that are refcounted objects.
//
// EXAMPLE OF Unretained():
//
// class Foo {
// public:
// void func() { cout << "Foo:f" << endl; }
// };
//
// // In some function somewhere.
// Foo foo;
// OnceClosure foo_callback =
// BindOnce(&Foo::func, Unretained(&foo));
// std::move(foo_callback).Run(); // Prints "Foo:f".
//
// Without the Unretained() wrapper on |&foo|, the above call would fail
// to compile because Foo does not support the AddRef() and Release() methods.
template <typename T>
inline internal::UnretainedWrapper<T> Unretained(T* o) {
return internal::UnretainedWrapper<T>(o);
}
// RetainedRef() accepts a ref counted object and retains a reference to it.
// When the callback is called, the object is passed as a raw pointer.
//
// EXAMPLE OF RetainedRef():
//
// void foo(RefCountedBytes* bytes) {}
//
// scoped_refptr<RefCountedBytes> bytes = ...;
// OnceClosure callback = BindOnce(&foo, base::RetainedRef(bytes));
// std::move(callback).Run();
//
// Without RetainedRef, the scoped_refptr would try to implicitly convert to
// a raw pointer and fail compilation:
//
// OnceClosure callback = BindOnce(&foo, bytes); // ERROR!
template <typename T>
inline internal::RetainedRefWrapper<T> RetainedRef(T* o) {
return internal::RetainedRefWrapper<T>(o);
}
template <typename T>
inline internal::RetainedRefWrapper<T> RetainedRef(scoped_refptr<T> o) {
return internal::RetainedRefWrapper<T>(std::move(o));
}
// Owned() transfers ownership of an object to the callback resulting from
// bind; the object will be deleted when the callback is deleted.
//
// EXAMPLE OF Owned():
//
// void foo(int* arg) { cout << *arg << endl }
//
// int* pn = new int(1);
// RepeatingClosure foo_callback = BindRepeating(&foo, Owned(pn));
//
// foo_callback.Run(); // Prints "1"
// foo_callback.Run(); // Prints "1"
// *pn = 2;
// foo_callback.Run(); // Prints "2"
//
// foo_callback.Reset(); // |pn| is deleted. Also will happen when
// // |foo_callback| goes out of scope.
//
// Without Owned(), someone would have to know to delete |pn| when the last
// reference to the callback is deleted.
template <typename T>
inline internal::OwnedWrapper<T> Owned(T* o) {
return internal::OwnedWrapper<T>(o);
}
template <typename T, typename Deleter>
inline internal::OwnedWrapper<T, Deleter> Owned(
std::unique_ptr<T, Deleter>&& ptr) {
return internal::OwnedWrapper<T, Deleter>(std::move(ptr));
}
// OwnedRef() stores an object in the callback resulting from
// bind and passes a reference to the object to the bound function.
//
// EXAMPLE OF OwnedRef():
//
// void foo(int& arg) { cout << ++arg << endl }
//
// int counter = 0;
// RepeatingClosure foo_callback = BindRepeating(&foo, OwnedRef(counter));
//
// foo_callback.Run(); // Prints "1"
// foo_callback.Run(); // Prints "2"
// foo_callback.Run(); // Prints "3"
//
// cout << counter; // Prints "0", OwnedRef creates a copy of counter.
//
// Supports OnceCallbacks as well, useful to pass placeholder arguments:
//
// void bar(int& ignore, const std::string& s) { cout << s << endl }
//
// OnceClosure bar_callback = BindOnce(&bar, OwnedRef(0), "Hello");
//
// std::move(bar_callback).Run(); // Prints "Hello"
//
// Without OwnedRef() it would not be possible to pass a mutable reference to an
// object owned by the callback.
template <typename T>
internal::OwnedRefWrapper<std::decay_t<T>> OwnedRef(T&& t) {
return internal::OwnedRefWrapper<std::decay_t<T>>(std::forward<T>(t));
}
// Passed() is for transferring movable-but-not-copyable types (eg. unique_ptr)
// through a RepeatingCallback. Logically, this signifies a destructive transfer
// of the state of the argument into the target function. Invoking
// RepeatingCallback::Run() twice on a callback that was created with a Passed()
// argument will CHECK() because the first invocation would have already
// transferred ownership to the target function.
//
// Note that Passed() is not necessary with BindOnce(), as std::move() does the
// same thing. Avoid Passed() in favor of std::move() with BindOnce().
//
// EXAMPLE OF Passed():
//
// void TakesOwnership(std::unique_ptr<Foo> arg) { }
// std::unique_ptr<Foo> CreateFoo() { return std::make_unique<Foo>();
// }
//
// auto f = std::make_unique<Foo>();
//
// // |cb| is given ownership of Foo(). |f| is now NULL.
// // You can use std::move(f) in place of &f, but it's more verbose.
// RepeatingClosure cb = BindRepeating(&TakesOwnership, Passed(&f));
//
// // Run was never called so |cb| still owns Foo() and deletes
// // it on Reset().
// cb.Reset();
//
// // |cb| is given a new Foo created by CreateFoo().
// cb = BindRepeating(&TakesOwnership, Passed(CreateFoo()));
//
// // |arg| in TakesOwnership() is given ownership of Foo(). |cb|
// // no longer owns Foo() and, if reset, would not delete Foo().
// cb.Run(); // Foo() is now transferred to |arg| and deleted.
// cb.Run(); // This CHECK()s since Foo() already been used once.
//
// We offer 2 syntaxes for calling Passed(). The first takes an rvalue and is
// best suited for use with the return value of a function or other temporary
// rvalues. The second takes a pointer to the scoper and is just syntactic sugar
// to avoid having to write Passed(std::move(scoper)).
//
// Both versions of Passed() prevent T from being an lvalue reference. The first
// via use of enable_if, and the second takes a T* which will not bind to T&.
template <typename T,
std::enable_if_t<!std::is_lvalue_reference<T>::value>* = nullptr>
inline internal::PassedWrapper<T> Passed(T&& scoper) {
return internal::PassedWrapper<T>(std::move(scoper));
}
template <typename T>
inline internal::PassedWrapper<T> Passed(T* scoper) {
return internal::PassedWrapper<T>(std::move(*scoper));
}
// IgnoreResult() is used to adapt a function or callback with a return type to
// one with a void return. This is most useful if you have a function with,
// say, a pesky ignorable bool return that you want to use with PostTask or
// something else that expect a callback with a void return.
//
// EXAMPLE OF IgnoreResult():
//
// int DoSomething(int arg) { cout << arg << endl; }
//
// // Assign to a callback with a void return type.
// OnceCallback<void(int)> cb = BindOnce(IgnoreResult(&DoSomething));
// std::move(cb).Run(1); // Prints "1".
//
// // Prints "2" on |ml|.
// ml->PostTask(FROM_HERE, BindOnce(IgnoreResult(&DoSomething), 2);
template <typename T>
inline internal::IgnoreResultHelper<T> IgnoreResult(T data) {
return internal::IgnoreResultHelper<T>(std::move(data));
}
#if defined(OS_APPLE) && !HAS_FEATURE(objc_arc)
// RetainBlock() is used to adapt an Objective-C block when Automated Reference
// Counting (ARC) is disabled. This is unnecessary when ARC is enabled, as the
// BindOnce and BindRepeating already support blocks then.
//
// EXAMPLE OF RetainBlock():
//
// // Wrap the block and bind it to a callback.
// OnceCallback<void(int)> cb =
// BindOnce(RetainBlock(^(int n) { NSLog(@"%d", n); }));
// std::move(cb).Run(1); // Logs "1".
template <typename R, typename... Args>
base::mac::ScopedBlock<R (^)(Args...)> RetainBlock(R (^block)(Args...)) {
return base::mac::ScopedBlock<R (^)(Args...)>(block,
base::scoped_policy::RETAIN);
}
#endif // defined(OS_APPLE) && !HAS_FEATURE(objc_arc)
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_BIND_H_

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// Copyright (c) 2011 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// This file adds defines about the platform we're currently building on.
//
// Operating System:
// OS_AIX / OS_ANDROID / OS_ASMJS / OS_FREEBSD / OS_FUCHSIA / OS_IOS /
// OS_LINUX / OS_MAC / OS_NACL (SFI or NONSFI) / OS_NETBSD / OS_OPENBSD /
// OS_QNX / OS_SOLARIS / OS_WIN
// Operating System family:
// OS_APPLE: IOS or MAC
// OS_BSD: FREEBSD or NETBSD or OPENBSD
// OS_POSIX: AIX or ANDROID or ASMJS or CHROMEOS or FREEBSD or IOS or LINUX
// or MAC or NACL or NETBSD or OPENBSD or QNX or SOLARIS
//
// /!\ Note: OS_CHROMEOS is set by the build system, not this file
//
// Compiler:
// COMPILER_MSVC / COMPILER_GCC
//
// Processor:
// ARCH_CPU_ARM64 / ARCH_CPU_ARMEL / ARCH_CPU_MIPS / ARCH_CPU_MIPS64 /
// ARCH_CPU_MIPS64EL / ARCH_CPU_MIPSEL / ARCH_CPU_PPC64 / ARCH_CPU_S390 /
// ARCH_CPU_S390X / ARCH_CPU_X86 / ARCH_CPU_X86_64
// Processor family:
// ARCH_CPU_ARM_FAMILY: ARMEL or ARM64
// ARCH_CPU_MIPS_FAMILY: MIPS64EL or MIPSEL or MIPS64 or MIPS
// ARCH_CPU_PPC64_FAMILY: PPC64
// ARCH_CPU_S390_FAMILY: S390 or S390X
// ARCH_CPU_X86_FAMILY: X86 or X86_64
// Processor features:
// ARCH_CPU_31_BITS / ARCH_CPU_32_BITS / ARCH_CPU_64_BITS
// ARCH_CPU_BIG_ENDIAN / ARCH_CPU_LITTLE_ENDIAN
#ifndef CEF_INCLUDE_BASE_CEF_BUILD_H_
#define CEF_INCLUDE_BASE_CEF_BUILD_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "build/build_config.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
// A set of macros to use for platform detection.
#if defined(ANDROID)
#define OS_ANDROID 1
#elif defined(__APPLE__)
// Only include TargetConditionals after testing ANDROID as some Android builds
// on the Mac have this header available and it's not needed unless the target
// is really an Apple platform.
#include <TargetConditionals.h>
#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
#define OS_IOS 1
#else
#define OS_MAC 1
// For backwards compatibility.
#define OS_MACOSX 1
#endif // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
#elif defined(__linux__)
#if !defined(OS_CHROMEOS)
// Do not define OS_LINUX on Chrome OS build.
// The OS_CHROMEOS macro is defined in GN.
#define OS_LINUX 1
#endif // !defined(OS_CHROMEOS)
// Include a system header to pull in features.h for glibc/uclibc macros.
#include <unistd.h>
#if defined(__GLIBC__) && !defined(__UCLIBC__)
// We really are using glibc, not uClibc pretending to be glibc.
#define LIBC_GLIBC 1
#endif
#elif defined(_WIN32)
#define OS_WIN 1
#elif defined(__Fuchsia__)
#define OS_FUCHSIA 1
#elif defined(__FreeBSD__)
#define OS_FREEBSD 1
#elif defined(__NetBSD__)
#define OS_NETBSD 1
#elif defined(__OpenBSD__)
#define OS_OPENBSD 1
#elif defined(__sun)
#define OS_SOLARIS 1
#elif defined(__QNXNTO__)
#define OS_QNX 1
#elif defined(_AIX)
#define OS_AIX 1
#elif defined(__asmjs__) || defined(__wasm__)
#define OS_ASMJS 1
#else
#error Please add support for your platform in include/base/cef_build.h
#endif
// NOTE: Adding a new port? Please follow
// https://chromium.googlesource.com/chromium/src/+/master/docs/new_port_policy.md
#if defined(OS_MAC) || defined(OS_IOS)
#define OS_APPLE 1
#endif
// For access to standard BSD features, use OS_BSD instead of a
// more specific macro.
#if defined(OS_FREEBSD) || defined(OS_NETBSD) || defined(OS_OPENBSD)
#define OS_BSD 1
#endif
// For access to standard POSIXish features, use OS_POSIX instead of a
// more specific macro.
#if defined(OS_AIX) || defined(OS_ANDROID) || defined(OS_ASMJS) || \
defined(OS_FREEBSD) || defined(OS_IOS) || defined(OS_LINUX) || \
defined(OS_CHROMEOS) || defined(OS_MAC) || defined(OS_NACL) || \
defined(OS_NETBSD) || defined(OS_OPENBSD) || defined(OS_QNX) || \
defined(OS_SOLARIS)
#define OS_POSIX 1
#endif
// Compiler detection. Note: clang masquerades as GCC on POSIX and as MSVC on
// Windows.
#if defined(__GNUC__)
#define COMPILER_GCC 1
#elif defined(_MSC_VER)
#define COMPILER_MSVC 1
#else
#error Please add support for your compiler in build/build_config.h
#endif
// Processor architecture detection. For more info on what's defined, see:
// http://msdn.microsoft.com/en-us/library/b0084kay.aspx
// http://www.agner.org/optimize/calling_conventions.pdf
// or with gcc, run: "echo | gcc -E -dM -"
#if defined(_M_X64) || defined(__x86_64__)
#define ARCH_CPU_X86_FAMILY 1
#define ARCH_CPU_X86_64 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(_M_IX86) || defined(__i386__)
#define ARCH_CPU_X86_FAMILY 1
#define ARCH_CPU_X86 1
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__s390x__)
#define ARCH_CPU_S390_FAMILY 1
#define ARCH_CPU_S390X 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_BIG_ENDIAN 1
#elif defined(__s390__)
#define ARCH_CPU_S390_FAMILY 1
#define ARCH_CPU_S390 1
#define ARCH_CPU_31_BITS 1
#define ARCH_CPU_BIG_ENDIAN 1
#elif (defined(__PPC64__) || defined(__PPC__)) && defined(__BIG_ENDIAN__)
#define ARCH_CPU_PPC64_FAMILY 1
#define ARCH_CPU_PPC64 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_BIG_ENDIAN 1
#elif defined(__PPC64__)
#define ARCH_CPU_PPC64_FAMILY 1
#define ARCH_CPU_PPC64 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__ARMEL__)
#define ARCH_CPU_ARM_FAMILY 1
#define ARCH_CPU_ARMEL 1
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__aarch64__) || defined(_M_ARM64)
#define ARCH_CPU_ARM_FAMILY 1
#define ARCH_CPU_ARM64 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__pnacl__) || defined(__asmjs__) || defined(__wasm__)
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__MIPSEL__)
#if defined(__LP64__)
#define ARCH_CPU_MIPS_FAMILY 1
#define ARCH_CPU_MIPS64EL 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#else
#define ARCH_CPU_MIPS_FAMILY 1
#define ARCH_CPU_MIPSEL 1
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#endif
#elif defined(__MIPSEB__)
#if defined(__LP64__)
#define ARCH_CPU_MIPS_FAMILY 1
#define ARCH_CPU_MIPS64 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_BIG_ENDIAN 1
#else
#define ARCH_CPU_MIPS_FAMILY 1
#define ARCH_CPU_MIPS 1
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_BIG_ENDIAN 1
#endif
#else
#error Please add support for your architecture in include/base/cef_build.h
#endif
// Type detection for wchar_t.
#if defined(OS_WIN)
#define WCHAR_T_IS_UTF16
#elif defined(OS_FUCHSIA)
#define WCHAR_T_IS_UTF32
#elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \
(__WCHAR_MAX__ == 0x7fffffff || __WCHAR_MAX__ == 0xffffffff)
#define WCHAR_T_IS_UTF32
#elif defined(OS_POSIX) && defined(COMPILER_GCC) && defined(__WCHAR_MAX__) && \
(__WCHAR_MAX__ == 0x7fff || __WCHAR_MAX__ == 0xffff)
// On Posix, we'll detect short wchar_t, but projects aren't guaranteed to
// compile in this mode (in particular, Chrome doesn't). This is intended for
// other projects using base who manage their own dependencies and make sure
// short wchar works for them.
#define WCHAR_T_IS_UTF16
#else
#error Please add support for your compiler in include/base/cef_build.h
#endif
#if defined(OS_ANDROID)
// The compiler thinks std::string::const_iterator and "const char*" are
// equivalent types.
#define STD_STRING_ITERATOR_IS_CHAR_POINTER
// The compiler thinks std::u16string::const_iterator and "char16*" are
// equivalent types.
#define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER
#endif
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_BUILD_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// -----------------------------------------------------------------------------
// Usage documentation
// -----------------------------------------------------------------------------
//
// Overview:
// A callback is similar in concept to a function pointer: it wraps a runnable
// object such as a function, method, lambda, or even another callback, allowing
// the runnable object to be invoked later via the callback object.
//
// Unlike function pointers, callbacks are created with base::BindOnce() or
// base::BindRepeating() and support partial function application.
//
// A base::OnceCallback may be Run() at most once; a base::RepeatingCallback may
// be Run() any number of times. |is_null()| is guaranteed to return true for a
// moved-from callback.
//
// // The lambda takes two arguments, but the first argument |x| is bound at
// // callback creation.
// base::OnceCallback<int(int)> cb = base::BindOnce([] (int x, int y) {
// return x + y;
// }, 1);
// // Run() only needs the remaining unbound argument |y|.
// printf("1 + 2 = %d\n", std::move(cb).Run(2)); // Prints 3
// printf("cb is null? %s\n",
// cb.is_null() ? "true" : "false"); // Prints true
// std::move(cb).Run(2); // Crashes since |cb| has already run.
//
// Callbacks also support cancellation. A common use is binding the receiver
// object as a WeakPtr<T>. If that weak pointer is invalidated, calling Run()
// will be a no-op. Note that |IsCancelled()| and |is_null()| are distinct:
// simply cancelling a callback will not also make it null.
//
// See https://chromium.googlesource.com/chromium/src/+/HEAD/docs/callback.md
// for the full documentation.
#ifndef CEF_INCLUDE_BASE_CEF_CALLBACK_H_
#define CEF_INCLUDE_BASE_CEF_CALLBACK_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/callback.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <stddef.h>
#include "include/base/cef_bind.h"
#include "include/base/cef_callback_forward.h"
#include "include/base/cef_logging.h"
#include "include/base/internal/cef_callback_internal.h"
namespace base {
template <typename R, typename... Args>
class OnceCallback<R(Args...)> : public internal::CallbackBase {
public:
using ResultType = R;
using RunType = R(Args...);
using PolymorphicInvoke = R (*)(internal::BindStateBase*,
internal::PassingType<Args>...);
constexpr OnceCallback() = default;
OnceCallback(std::nullptr_t) = delete;
explicit OnceCallback(internal::BindStateBase* bind_state)
: internal::CallbackBase(bind_state) {}
OnceCallback(const OnceCallback&) = delete;
OnceCallback& operator=(const OnceCallback&) = delete;
OnceCallback(OnceCallback&&) noexcept = default;
OnceCallback& operator=(OnceCallback&&) noexcept = default;
OnceCallback(RepeatingCallback<RunType> other)
: internal::CallbackBase(std::move(other)) {}
OnceCallback& operator=(RepeatingCallback<RunType> other) {
static_cast<internal::CallbackBase&>(*this) = std::move(other);
return *this;
}
R Run(Args... args) const& {
static_assert(!sizeof(*this),
"OnceCallback::Run() may only be invoked on a non-const "
"rvalue, i.e. std::move(callback).Run().");
NOTREACHED();
}
R Run(Args... args) && {
// Move the callback instance into a local variable before the invocation,
// that ensures the internal state is cleared after the invocation.
// It's not safe to touch |this| after the invocation, since running the
// bound function may destroy |this|.
OnceCallback cb = std::move(*this);
PolymorphicInvoke f =
reinterpret_cast<PolymorphicInvoke>(cb.polymorphic_invoke());
return f(cb.bind_state_.get(), std::forward<Args>(args)...);
}
// Then() returns a new OnceCallback that receives the same arguments as
// |this|, and with the return type of |then|. The returned callback will:
// 1) Run the functor currently bound to |this| callback.
// 2) Run the |then| callback with the result from step 1 as its single
// argument.
// 3) Return the value from running the |then| callback.
//
// Since this method generates a callback that is a replacement for `this`,
// `this` will be consumed and reset to a null callback to ensure the
// originally-bound functor can be run at most once.
template <typename ThenR, typename... ThenArgs>
OnceCallback<ThenR(Args...)> Then(OnceCallback<ThenR(ThenArgs...)> then) && {
CHECK(then);
return BindOnce(
internal::ThenHelper<
OnceCallback, OnceCallback<ThenR(ThenArgs...)>>::CreateTrampoline(),
std::move(*this), std::move(then));
}
// This overload is required; even though RepeatingCallback is implicitly
// convertible to OnceCallback, that conversion will not used when matching
// for template argument deduction.
template <typename ThenR, typename... ThenArgs>
OnceCallback<ThenR(Args...)> Then(
RepeatingCallback<ThenR(ThenArgs...)> then) && {
CHECK(then);
return BindOnce(
internal::ThenHelper<
OnceCallback,
RepeatingCallback<ThenR(ThenArgs...)>>::CreateTrampoline(),
std::move(*this), std::move(then));
}
};
template <typename R, typename... Args>
class RepeatingCallback<R(Args...)> : public internal::CallbackBaseCopyable {
public:
using ResultType = R;
using RunType = R(Args...);
using PolymorphicInvoke = R (*)(internal::BindStateBase*,
internal::PassingType<Args>...);
constexpr RepeatingCallback() = default;
RepeatingCallback(std::nullptr_t) = delete;
explicit RepeatingCallback(internal::BindStateBase* bind_state)
: internal::CallbackBaseCopyable(bind_state) {}
// Copyable and movable.
RepeatingCallback(const RepeatingCallback&) = default;
RepeatingCallback& operator=(const RepeatingCallback&) = default;
RepeatingCallback(RepeatingCallback&&) noexcept = default;
RepeatingCallback& operator=(RepeatingCallback&&) noexcept = default;
bool operator==(const RepeatingCallback& other) const {
return EqualsInternal(other);
}
bool operator!=(const RepeatingCallback& other) const {
return !operator==(other);
}
R Run(Args... args) const& {
PolymorphicInvoke f =
reinterpret_cast<PolymorphicInvoke>(this->polymorphic_invoke());
return f(this->bind_state_.get(), std::forward<Args>(args)...);
}
R Run(Args... args) && {
// Move the callback instance into a local variable before the invocation,
// that ensures the internal state is cleared after the invocation.
// It's not safe to touch |this| after the invocation, since running the
// bound function may destroy |this|.
RepeatingCallback cb = std::move(*this);
PolymorphicInvoke f =
reinterpret_cast<PolymorphicInvoke>(cb.polymorphic_invoke());
return f(std::move(cb).bind_state_.get(), std::forward<Args>(args)...);
}
// Then() returns a new RepeatingCallback that receives the same arguments as
// |this|, and with the return type of |then|. The
// returned callback will:
// 1) Run the functor currently bound to |this| callback.
// 2) Run the |then| callback with the result from step 1 as its single
// argument.
// 3) Return the value from running the |then| callback.
//
// If called on an rvalue (e.g. std::move(cb).Then(...)), this method
// generates a callback that is a replacement for `this`. Therefore, `this`
// will be consumed and reset to a null callback to ensure the
// originally-bound functor will be run at most once.
template <typename ThenR, typename... ThenArgs>
RepeatingCallback<ThenR(Args...)> Then(
RepeatingCallback<ThenR(ThenArgs...)> then) const& {
CHECK(then);
return BindRepeating(
internal::ThenHelper<
RepeatingCallback,
RepeatingCallback<ThenR(ThenArgs...)>>::CreateTrampoline(),
*this, std::move(then));
}
template <typename ThenR, typename... ThenArgs>
RepeatingCallback<ThenR(Args...)> Then(
RepeatingCallback<ThenR(ThenArgs...)> then) && {
CHECK(then);
return BindRepeating(
internal::ThenHelper<
RepeatingCallback,
RepeatingCallback<ThenR(ThenArgs...)>>::CreateTrampoline(),
std::move(*this), std::move(then));
}
};
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_CALLBACK_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef INCLUDE_BASE_CEF_CALLBACK_FORWARD_H_
#define INCLUDE_BASE_CEF_CALLBACK_FORWARD_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/callback_forward.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
namespace base {
template <typename Signature>
class OnceCallback;
template <typename Signature>
class RepeatingCallback;
// Syntactic sugar to make OnceClosure<void()> and RepeatingClosure<void()>
// easier to declare since they will be used in a lot of APIs with delayed
// execution.
using OnceClosure = OnceCallback<void()>;
using RepeatingClosure = RepeatingCallback<void()>;
} // namespace base
#endif // !!USING_CHROMIUM_INCLUDES
#endif // INCLUDE_BASE_CEF_CALLBACK_FORWARD_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// This defines helpful methods for dealing with Callbacks. Because Callbacks
// are implemented using templates, with a class per callback signature, adding
// methods to Callback<> itself is unattractive (lots of extra code gets
// generated). Instead, consider adding methods here.
#ifndef CEF_INCLUDE_BASE_CEF_CALLBACK_HELPERS_H_
#define CEF_INCLUDE_BASE_CEF_CALLBACK_HELPERS_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/callback_helpers.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <atomic>
#include <memory>
#include <type_traits>
#include <utility>
#include "include/base/cef_bind.h"
#include "include/base/cef_callback.h"
#include "include/base/cef_compiler_specific.h"
#include "include/base/cef_logging.h"
namespace base {
namespace internal {
template <typename T>
struct IsBaseCallbackImpl : std::false_type {};
template <typename R, typename... Args>
struct IsBaseCallbackImpl<OnceCallback<R(Args...)>> : std::true_type {};
template <typename R, typename... Args>
struct IsBaseCallbackImpl<RepeatingCallback<R(Args...)>> : std::true_type {};
template <typename T>
struct IsOnceCallbackImpl : std::false_type {};
template <typename R, typename... Args>
struct IsOnceCallbackImpl<OnceCallback<R(Args...)>> : std::true_type {};
} // namespace internal
// IsBaseCallback<T>::value is true when T is any of the Closure or Callback
// family of types.
template <typename T>
using IsBaseCallback = internal::IsBaseCallbackImpl<std::decay_t<T>>;
// IsOnceCallback<T>::value is true when T is a OnceClosure or OnceCallback
// type.
template <typename T>
using IsOnceCallback = internal::IsOnceCallbackImpl<std::decay_t<T>>;
// SFINAE friendly enabler allowing to overload methods for both Repeating and
// OnceCallbacks.
//
// Usage:
// template <template <typename> class CallbackType,
// ... other template args ...,
// typename = EnableIfIsBaseCallback<CallbackType>>
// void DoStuff(CallbackType<...> cb, ...);
template <template <typename> class CallbackType>
using EnableIfIsBaseCallback =
std::enable_if_t<IsBaseCallback<CallbackType<void()>>::value>;
namespace internal {
template <typename... Args>
class OnceCallbackHolder final {
public:
OnceCallbackHolder(OnceCallback<void(Args...)> callback,
bool ignore_extra_runs)
: callback_(std::move(callback)), ignore_extra_runs_(ignore_extra_runs) {
DCHECK(callback_);
}
OnceCallbackHolder(const OnceCallbackHolder&) = delete;
OnceCallbackHolder& operator=(const OnceCallbackHolder&) = delete;
void Run(Args... args) {
if (has_run_.exchange(true)) {
CHECK(ignore_extra_runs_) << "Both OnceCallbacks returned by "
"base::SplitOnceCallback() were run. "
"At most one of the pair should be run.";
return;
}
DCHECK(callback_);
std::move(callback_).Run(std::forward<Args>(args)...);
}
private:
volatile std::atomic_bool has_run_{false};
base::OnceCallback<void(Args...)> callback_;
const bool ignore_extra_runs_;
};
} // namespace internal
// Wraps the given OnceCallback into a RepeatingCallback that relays its
// invocation to the original OnceCallback on the first invocation. The
// following invocations are just ignored.
//
// Note that this deliberately subverts the Once/Repeating paradigm of Callbacks
// but helps ease the migration from old-style Callbacks. Avoid if possible; use
// if necessary for migration. TODO(tzik): Remove it. https://crbug.com/730593
template <typename... Args>
RepeatingCallback<void(Args...)> AdaptCallbackForRepeating(
OnceCallback<void(Args...)> callback) {
using Helper = internal::OnceCallbackHolder<Args...>;
return base::BindRepeating(
&Helper::Run, std::make_unique<Helper>(std::move(callback),
/*ignore_extra_runs=*/true));
}
// Wraps the given OnceCallback and returns two OnceCallbacks with an identical
// signature. On first invokation of either returned callbacks, the original
// callback is invoked. Invoking the remaining callback results in a crash.
template <typename... Args>
std::pair<OnceCallback<void(Args...)>, OnceCallback<void(Args...)>>
SplitOnceCallback(OnceCallback<void(Args...)> callback) {
using Helper = internal::OnceCallbackHolder<Args...>;
auto wrapped_once = base::BindRepeating(
&Helper::Run, std::make_unique<Helper>(std::move(callback),
/*ignore_extra_runs=*/false));
return std::make_pair(wrapped_once, wrapped_once);
}
// ScopedClosureRunner is akin to std::unique_ptr<> for Closures. It ensures
// that the Closure is executed no matter how the current scope exits.
// If you are looking for "ScopedCallback", "CallbackRunner", or
// "CallbackScoper" this is the class you want.
class ScopedClosureRunner {
public:
ScopedClosureRunner();
explicit ScopedClosureRunner(OnceClosure closure);
ScopedClosureRunner(ScopedClosureRunner&& other);
// Runs the current closure if it's set, then replaces it with the closure
// from |other|. This is akin to how unique_ptr frees the contained pointer in
// its move assignment operator. If you need to explicitly avoid running any
// current closure, use ReplaceClosure().
ScopedClosureRunner& operator=(ScopedClosureRunner&& other);
~ScopedClosureRunner();
explicit operator bool() const { return !!closure_; }
// Calls the current closure and resets it, so it wont be called again.
void RunAndReset();
// Replaces closure with the new one releasing the old one without calling it.
void ReplaceClosure(OnceClosure closure);
// Releases the Closure without calling.
OnceClosure Release() WARN_UNUSED_RESULT;
private:
OnceClosure closure_;
};
// Creates a null callback.
class NullCallback {
public:
template <typename R, typename... Args>
operator RepeatingCallback<R(Args...)>() const {
return RepeatingCallback<R(Args...)>();
}
template <typename R, typename... Args>
operator OnceCallback<R(Args...)>() const {
return OnceCallback<R(Args...)>();
}
};
// Creates a callback that does nothing when called.
class DoNothing {
public:
template <typename... Args>
operator RepeatingCallback<void(Args...)>() const {
return Repeatedly<Args...>();
}
template <typename... Args>
operator OnceCallback<void(Args...)>() const {
return Once<Args...>();
}
// Explicit way of specifying a specific callback type when the compiler can't
// deduce it.
template <typename... Args>
static RepeatingCallback<void(Args...)> Repeatedly() {
return BindRepeating([](Args... args) {});
}
template <typename... Args>
static OnceCallback<void(Args...)> Once() {
return BindOnce([](Args... args) {});
}
};
// Useful for creating a Closure that will delete a pointer when invoked. Only
// use this when necessary. In most cases MessageLoop::DeleteSoon() is a better
// fit.
template <typename T>
void DeletePointer(T* obj) {
delete obj;
}
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_CALLBACK_HELPERS_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2013
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// OVERVIEW:
//
// A container for a list of callbacks. Provides callers the ability to manually
// or automatically unregister callbacks at any time, including during callback
// notification.
//
// TYPICAL USAGE:
//
// class MyWidget {
// public:
// using CallbackList = base::RepeatingCallbackList<void(const Foo&)>;
//
// // Registers |cb| to be called whenever NotifyFoo() is executed.
// CallbackListSubscription RegisterCallback(CallbackList::CallbackType cb) {
// return callback_list_.Add(std::move(cb));
// }
//
// private:
// // Calls all registered callbacks, with |foo| as the supplied arg.
// void NotifyFoo(const Foo& foo) {
// callback_list_.Notify(foo);
// }
//
// CallbackList callback_list_;
// };
//
//
// class MyWidgetListener {
// private:
// void OnFoo(const Foo& foo) {
// // Called whenever MyWidget::NotifyFoo() is executed, unless
// // |foo_subscription_| has been destroyed.
// }
//
// // Automatically deregisters the callback when deleted (e.g. in
// // ~MyWidgetListener()). Unretained(this) is safe here since the
// // ScopedClosureRunner does not outlive |this|.
// CallbackListSubscription foo_subscription_ =
// MyWidget::Get()->RegisterCallback(
// base::BindRepeating(&MyWidgetListener::OnFoo,
// base::Unretained(this)));
// };
//
// UNSUPPORTED:
//
// * Destroying the CallbackList during callback notification.
//
// This is possible to support, but not currently necessary.
#ifndef CEF_INCLUDE_BASE_CEF_CALLBACK_LIST_H_
#define CEF_INCLUDE_BASE_CEF_CALLBACK_LIST_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/callback_list.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <algorithm>
#include <list>
#include <memory>
#include <utility>
#include "include/base/cef_auto_reset.h"
#include "include/base/cef_bind.h"
#include "include/base/cef_callback.h"
#include "include/base/cef_callback_helpers.h"
#include "include/base/cef_compiler_specific.h"
#include "include/base/cef_logging.h"
#include "include/base/cef_weak_ptr.h"
namespace base {
namespace internal {
template <typename CallbackListImpl>
class CallbackListBase;
} // namespace internal
template <typename Signature>
class OnceCallbackList;
template <typename Signature>
class RepeatingCallbackList;
// A trimmed-down version of ScopedClosureRunner that can be used to guarantee a
// closure is run on destruction. This is designed to be used by
// CallbackListBase to run CancelCallback() when this subscription dies;
// consumers can avoid callbacks on dead objects by ensuring the subscription
// returned by CallbackListBase::Add() does not outlive the bound object in the
// callback. A typical way to do this is to bind a callback to a member function
// on `this` and store the returned subscription as a member variable.
class CallbackListSubscription {
public:
CallbackListSubscription();
CallbackListSubscription(CallbackListSubscription&& subscription);
CallbackListSubscription& operator=(CallbackListSubscription&& subscription);
~CallbackListSubscription();
explicit operator bool() const { return !!closure_; }
private:
template <typename T>
friend class internal::CallbackListBase;
explicit CallbackListSubscription(base::OnceClosure closure);
void Run();
OnceClosure closure_;
};
namespace internal {
// From base/stl_util.h.
template <class T, class Allocator, class Predicate>
size_t EraseIf(std::list<T, Allocator>& container, Predicate pred) {
size_t old_size = container.size();
container.remove_if(pred);
return old_size - container.size();
}
// A traits class to break circular type dependencies between CallbackListBase
// and its subclasses.
template <typename CallbackList>
struct CallbackListTraits;
// NOTE: It's important that Callbacks provide iterator stability when items are
// added to the end, so e.g. a std::vector<> is not suitable here.
template <typename Signature>
struct CallbackListTraits<OnceCallbackList<Signature>> {
using CallbackType = OnceCallback<Signature>;
using Callbacks = std::list<CallbackType>;
};
template <typename Signature>
struct CallbackListTraits<RepeatingCallbackList<Signature>> {
using CallbackType = RepeatingCallback<Signature>;
using Callbacks = std::list<CallbackType>;
};
template <typename CallbackListImpl>
class CallbackListBase {
public:
using CallbackType =
typename CallbackListTraits<CallbackListImpl>::CallbackType;
static_assert(IsBaseCallback<CallbackType>::value, "");
// TODO(crbug.com/1103086): Update references to use this directly and by
// value, then remove.
using Subscription = CallbackListSubscription;
CallbackListBase() = default;
CallbackListBase(const CallbackListBase&) = delete;
CallbackListBase& operator=(const CallbackListBase&) = delete;
~CallbackListBase() {
// Destroying the list during iteration is unsupported and will cause a UAF.
CHECK(!iterating_);
}
// Registers |cb| for future notifications. Returns a CallbackListSubscription
// whose destruction will cancel |cb|.
CallbackListSubscription Add(CallbackType cb) WARN_UNUSED_RESULT {
DCHECK(!cb.is_null());
return CallbackListSubscription(base::BindOnce(
&CallbackListBase::CancelCallback, weak_ptr_factory_.GetWeakPtr(),
callbacks_.insert(callbacks_.end(), std::move(cb))));
}
// Registers |cb| for future notifications. Provides no way for the caller to
// cancel, so this is only safe for cases where the callback is guaranteed to
// live at least as long as this list (e.g. if it's bound on the same object
// that owns the list).
// TODO(pkasting): Attempt to use Add() instead and see if callers can relax
// other lifetime/ordering mechanisms as a result.
void AddUnsafe(CallbackType cb) {
DCHECK(!cb.is_null());
callbacks_.push_back(std::move(cb));
}
// Registers |removal_callback| to be run after elements are removed from the
// list of registered callbacks.
void set_removal_callback(const RepeatingClosure& removal_callback) {
removal_callback_ = removal_callback;
}
// Returns whether the list of registered callbacks is empty (from an external
// perspective -- meaning no remaining callbacks are live).
bool empty() const {
return std::all_of(callbacks_.cbegin(), callbacks_.cend(),
[](const auto& callback) { return callback.is_null(); });
}
// Calls all registered callbacks that are not canceled beforehand. If any
// callbacks are unregistered, notifies any registered removal callback at the
// end.
//
// Arguments must be copyable, since they must be supplied to all callbacks.
// Move-only types would be destructively modified by passing them to the
// first callback and not reach subsequent callbacks as intended.
//
// Notify() may be called re-entrantly, in which case the nested call
// completes before the outer one continues. Callbacks are only ever added at
// the end and canceled callbacks are not pruned from the list until the
// outermost iteration completes, so existing iterators should never be
// invalidated. However, this does mean that a callback added during a nested
// call can be notified by outer calls -- meaning it will be notified about
// things that happened before it was added -- if its subscription outlives
// the reentrant Notify() call.
template <typename... RunArgs>
void Notify(RunArgs&&... args) {
if (empty())
return; // Nothing to do.
{
AutoReset<bool> iterating(&iterating_, true);
// Skip any callbacks that are canceled during iteration.
// NOTE: Since RunCallback() may call Add(), it's not safe to cache the
// value of callbacks_.end() across loop iterations.
const auto next_valid = [this](const auto it) {
return std::find_if_not(it, callbacks_.end(), [](const auto& callback) {
return callback.is_null();
});
};
for (auto it = next_valid(callbacks_.begin()); it != callbacks_.end();
it = next_valid(it))
// NOTE: Intentionally does not call std::forward<RunArgs>(args)...,
// since that would allow move-only arguments.
static_cast<CallbackListImpl*>(this)->RunCallback(it++, args...);
}
// Re-entrant invocations shouldn't prune anything from the list. This can
// invalidate iterators from underneath higher call frames. It's safe to
// simply do nothing, since the outermost frame will continue through here
// and prune all null callbacks below.
if (iterating_)
return;
// Any null callbacks remaining in the list were canceled due to
// Subscription destruction during iteration, and can safely be erased now.
const size_t erased_callbacks =
EraseIf(callbacks_, [](const auto& cb) { return cb.is_null(); });
// Run |removal_callback_| if any callbacks were canceled. Note that we
// cannot simply compare list sizes before and after iterating, since
// notification may result in Add()ing new callbacks as well as canceling
// them. Also note that if this is a OnceCallbackList, the OnceCallbacks
// that were executed above have all been removed regardless of whether
// they're counted in |erased_callbacks_|.
if (removal_callback_ &&
(erased_callbacks || IsOnceCallback<CallbackType>::value))
removal_callback_.Run(); // May delete |this|!
}
protected:
using Callbacks = typename CallbackListTraits<CallbackListImpl>::Callbacks;
// Holds non-null callbacks, which will be called during Notify().
Callbacks callbacks_;
private:
// Cancels the callback pointed to by |it|, which is guaranteed to be valid.
void CancelCallback(const typename Callbacks::iterator& it) {
if (static_cast<CallbackListImpl*>(this)->CancelNullCallback(it))
return;
if (iterating_) {
// Calling erase() here is unsafe, since the loop in Notify() may be
// referencing this same iterator, e.g. if adjacent callbacks'
// Subscriptions are both destroyed when the first one is Run(). Just
// reset the callback and let Notify() clean it up at the end.
it->Reset();
} else {
callbacks_.erase(it);
if (removal_callback_)
removal_callback_.Run(); // May delete |this|!
}
}
// Set while Notify() is traversing |callbacks_|. Used primarily to avoid
// invalidating iterators that may be in use.
bool iterating_ = false;
// Called after elements are removed from |callbacks_|.
RepeatingClosure removal_callback_;
WeakPtrFactory<CallbackListBase> weak_ptr_factory_{this};
};
} // namespace internal
template <typename Signature>
class OnceCallbackList
: public internal::CallbackListBase<OnceCallbackList<Signature>> {
private:
friend internal::CallbackListBase<OnceCallbackList>;
using Traits = internal::CallbackListTraits<OnceCallbackList>;
// Runs the current callback, which may cancel it or any other callbacks.
template <typename... RunArgs>
void RunCallback(typename Traits::Callbacks::iterator it, RunArgs&&... args) {
// OnceCallbacks still have Subscriptions with outstanding iterators;
// splice() removes them from |callbacks_| without invalidating those.
null_callbacks_.splice(null_callbacks_.end(), this->callbacks_, it);
// NOTE: Intentionally does not call std::forward<RunArgs>(args)...; see
// comments in Notify().
std::move(*it).Run(args...);
}
// If |it| refers to an already-canceled callback, does any necessary cleanup
// and returns true. Otherwise returns false.
bool CancelNullCallback(const typename Traits::Callbacks::iterator& it) {
if (it->is_null()) {
null_callbacks_.erase(it);
return true;
}
return false;
}
// Holds null callbacks whose Subscriptions are still alive, so the
// Subscriptions will still contain valid iterators. Only needed for
// OnceCallbacks, since RepeatingCallbacks are not canceled except by
// Subscription destruction.
typename Traits::Callbacks null_callbacks_;
};
template <typename Signature>
class RepeatingCallbackList
: public internal::CallbackListBase<RepeatingCallbackList<Signature>> {
private:
friend internal::CallbackListBase<RepeatingCallbackList>;
using Traits = internal::CallbackListTraits<RepeatingCallbackList>;
// Runs the current callback, which may cancel it or any other callbacks.
template <typename... RunArgs>
void RunCallback(typename Traits::Callbacks::iterator it, RunArgs&&... args) {
// NOTE: Intentionally does not call std::forward<RunArgs>(args)...; see
// comments in Notify().
it->Run(args...);
}
// If |it| refers to an already-canceled callback, does any necessary cleanup
// and returns true. Otherwise returns false.
bool CancelNullCallback(const typename Traits::Callbacks::iterator& it) {
// Because at most one Subscription can point to a given callback, and
// RepeatingCallbacks are only reset by CancelCallback(), no one should be
// able to request cancellation of a canceled RepeatingCallback.
DCHECK(!it->is_null());
return false;
}
};
// Syntactic sugar to parallel that used for Callbacks.
// ClosureList explicitly not provided since it is not used, and CallbackList
// is deprecated. {Once,Repeating}ClosureList should instead be used.
using OnceClosureList = OnceCallbackList<void()>;
using RepeatingClosureList = RepeatingCallbackList<void()>;
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_CALLBACK_LIST_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// CancelableCallback is a wrapper around base::Callback that allows
// cancellation of a callback. CancelableCallback takes a reference on the
// wrapped callback until this object is destroyed or Reset()/Cancel() are
// called.
//
// NOTE:
//
// Calling CancelableCallback::Cancel() brings the object back to its natural,
// default-constructed state, i.e., CancelableCallback::callback() will return
// a null callback.
//
// THREAD-SAFETY:
//
// CancelableCallback objects must be created on, posted to, cancelled on, and
// destroyed on the same thread.
//
//
// EXAMPLE USAGE:
//
// In the following example, the test is verifying that RunIntensiveTest()
// Quit()s the message loop within 4 seconds. The cancelable callback is posted
// to the message loop, the intensive test runs, the message loop is run,
// then the callback is cancelled.
//
// RunLoop run_loop;
//
// void TimeoutCallback(const std::string& timeout_message) {
// FAIL() << timeout_message;
// run_loop.QuitWhenIdle();
// }
//
// CancelableOnceClosure timeout(
// base::BindOnce(&TimeoutCallback, "Test timed out."));
// ThreadTaskRunnerHandle::Get()->PostDelayedTask(FROM_HERE, timeout.callback(),
// TimeDelta::FromSeconds(4));
// RunIntensiveTest();
// run_loop.Run();
// timeout.Cancel(); // Hopefully this is hit before the timeout callback runs.
#ifndef CEF_INCLUDE_BASE_CEF_CANCELABLE_CALLBACK_H_
#define CEF_INCLUDE_BASE_CEF_CANCELABLE_CALLBACK_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/cancelable_callback.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <utility>
#include "include/base/cef_bind.h"
#include "include/base/cef_callback.h"
#include "include/base/cef_compiler_specific.h"
#include "include/base/cef_logging.h"
#include "include/base/cef_weak_ptr.h"
#include "include/base/internal/cef_callback_internal.h"
namespace base {
namespace internal {
template <typename CallbackType>
class CancelableCallbackImpl {
public:
CancelableCallbackImpl() = default;
CancelableCallbackImpl(const CancelableCallbackImpl&) = delete;
CancelableCallbackImpl& operator=(const CancelableCallbackImpl&) = delete;
// |callback| must not be null.
explicit CancelableCallbackImpl(CallbackType callback)
: callback_(std::move(callback)) {
DCHECK(callback_);
}
~CancelableCallbackImpl() = default;
// Cancels and drops the reference to the wrapped callback.
void Cancel() {
weak_ptr_factory_.InvalidateWeakPtrs();
callback_.Reset();
}
// Returns true if the wrapped callback has been cancelled.
bool IsCancelled() const { return callback_.is_null(); }
// Sets |callback| as the closure that may be cancelled. |callback| may not
// be null. Outstanding and any previously wrapped callbacks are cancelled.
void Reset(CallbackType callback) {
DCHECK(callback);
// Outstanding tasks (e.g., posted to a message loop) must not be called.
Cancel();
callback_ = std::move(callback);
}
// Returns a callback that can be disabled by calling Cancel().
CallbackType callback() const {
if (!callback_)
return CallbackType();
CallbackType forwarder;
MakeForwarder(&forwarder);
return forwarder;
}
private:
template <typename... Args>
void MakeForwarder(RepeatingCallback<void(Args...)>* out) const {
using ForwarderType = void (CancelableCallbackImpl::*)(Args...);
ForwarderType forwarder = &CancelableCallbackImpl::ForwardRepeating;
*out = BindRepeating(forwarder, weak_ptr_factory_.GetWeakPtr());
}
template <typename... Args>
void MakeForwarder(OnceCallback<void(Args...)>* out) const {
using ForwarderType = void (CancelableCallbackImpl::*)(Args...);
ForwarderType forwarder = &CancelableCallbackImpl::ForwardOnce;
*out = BindOnce(forwarder, weak_ptr_factory_.GetWeakPtr());
}
template <typename... Args>
void ForwardRepeating(Args... args) {
callback_.Run(std::forward<Args>(args)...);
}
template <typename... Args>
void ForwardOnce(Args... args) {
weak_ptr_factory_.InvalidateWeakPtrs();
std::move(callback_).Run(std::forward<Args>(args)...);
}
// The stored closure that may be cancelled.
CallbackType callback_;
mutable base::WeakPtrFactory<CancelableCallbackImpl> weak_ptr_factory_{this};
};
} // namespace internal
// Consider using base::WeakPtr directly instead of base::CancelableCallback for
// the task cancellation.
template <typename Signature>
using CancelableOnceCallback =
internal::CancelableCallbackImpl<OnceCallback<Signature>>;
using CancelableOnceClosure = CancelableOnceCallback<void()>;
template <typename Signature>
using CancelableRepeatingCallback =
internal::CancelableCallbackImpl<RepeatingCallback<Signature>>;
using CancelableRepeatingClosure = CancelableRepeatingCallback<void()>;
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_CANCELABLE_CALLBACK_H_

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// Copyright (c) 2021 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_CEF_COMPILER_SPECIFIC_H_
#define CEF_INCLUDE_BASE_CEF_COMPILER_SPECIFIC_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/compiler_specific.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include "include/base/cef_build.h"
// This is a wrapper around `__has_cpp_attribute`, which can be used to test for
// the presence of an attribute. In case the compiler does not support this
// macro it will simply evaluate to 0.
//
// References:
// https://wg21.link/sd6#testing-for-the-presence-of-an-attribute-__has_cpp_attribute
// https://wg21.link/cpp.cond#:__has_cpp_attribute
#if defined(__has_cpp_attribute)
#define HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
#else
#define HAS_CPP_ATTRIBUTE(x) 0
#endif
// A wrapper around `__has_builtin`, similar to HAS_CPP_ATTRIBUTE.
#if defined(__has_builtin)
#define HAS_BUILTIN(x) __has_builtin(x)
#else
#define HAS_BUILTIN(x) 0
#endif
// __has_feature and __has_attribute don't exist for MSVC.
#if !defined(__has_feature)
#define __has_feature(x) 0
#endif // !defined(__has_feature)
#if !defined(__has_attribute)
#define __has_attribute(x) 0
#endif // !defined(__has_attribute)
// Annotate a function indicating it should not be inlined.
// Use like:
// NOINLINE void DoStuff() { ... }
#if defined(COMPILER_GCC)
#define NOINLINE __attribute__((noinline))
#elif defined(COMPILER_MSVC)
#define NOINLINE __declspec(noinline)
#else
#define NOINLINE
#endif
#if defined(COMPILER_GCC) && defined(NDEBUG)
#define ALWAYS_INLINE inline __attribute__((__always_inline__))
#elif defined(COMPILER_MSVC) && defined(NDEBUG)
#define ALWAYS_INLINE __forceinline
#else
#define ALWAYS_INLINE inline
#endif
// Annotate a function indicating it should never be tail called. Useful to make
// sure callers of the annotated function are never omitted from call-stacks.
// To provide the complementary behavior (prevent the annotated function from
// being omitted) look at NOINLINE. Also note that this doesn't prevent code
// folding of multiple identical caller functions into a single signature. To
// prevent code folding, see NO_CODE_FOLDING() in base/debug/alias.h.
// Use like:
// void NOT_TAIL_CALLED FooBar();
#if defined(__clang__) && __has_attribute(not_tail_called)
#define NOT_TAIL_CALLED __attribute__((not_tail_called))
#else
#define NOT_TAIL_CALLED
#endif
// Specify memory alignment for structs, classes, etc.
// Use like:
// class ALIGNAS(16) MyClass { ... }
// ALIGNAS(16) int array[4];
//
// In most places you can use the C++11 keyword "alignas", which is preferred.
//
// But compilers have trouble mixing __attribute__((...)) syntax with
// alignas(...) syntax.
//
// Doesn't work in clang or gcc:
// struct alignas(16) __attribute__((packed)) S { char c; };
// Works in clang but not gcc:
// struct __attribute__((packed)) alignas(16) S2 { char c; };
// Works in clang and gcc:
// struct alignas(16) S3 { char c; } __attribute__((packed));
//
// There are also some attributes that must be specified *before* a class
// definition: visibility (used for exporting functions/classes) is one of
// these attributes. This means that it is not possible to use alignas() with a
// class that is marked as exported.
#if defined(COMPILER_MSVC)
#define ALIGNAS(byte_alignment) __declspec(align(byte_alignment))
#elif defined(COMPILER_GCC)
#define ALIGNAS(byte_alignment) __attribute__((aligned(byte_alignment)))
#endif
// In case the compiler supports it NO_UNIQUE_ADDRESS evaluates to the C++20
// attribute [[no_unique_address]]. This allows annotating data members so that
// they need not have an address distinct from all other non-static data members
// of its class.
//
// References:
// * https://en.cppreference.com/w/cpp/language/attributes/no_unique_address
// * https://wg21.link/dcl.attr.nouniqueaddr
#if HAS_CPP_ATTRIBUTE(no_unique_address)
#define NO_UNIQUE_ADDRESS [[no_unique_address]]
#else
#define NO_UNIQUE_ADDRESS
#endif
// Tell the compiler a function is using a printf-style format string.
// |format_param| is the one-based index of the format string parameter;
// |dots_param| is the one-based index of the "..." parameter.
// For v*printf functions (which take a va_list), pass 0 for dots_param.
// (This is undocumented but matches what the system C headers do.)
// For member functions, the implicit this parameter counts as index 1.
#if defined(COMPILER_GCC) || defined(__clang__)
#define PRINTF_FORMAT(format_param, dots_param) \
__attribute__((format(printf, format_param, dots_param)))
#else
#define PRINTF_FORMAT(format_param, dots_param)
#endif
// WPRINTF_FORMAT is the same, but for wide format strings.
// This doesn't appear to yet be implemented in any compiler.
// See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38308 .
#define WPRINTF_FORMAT(format_param, dots_param)
// If available, it would look like:
// __attribute__((format(wprintf, format_param, dots_param)))
// Sanitizers annotations.
#if defined(__has_attribute)
#if __has_attribute(no_sanitize)
#define NO_SANITIZE(what) __attribute__((no_sanitize(what)))
#endif
#endif
#if !defined(NO_SANITIZE)
#define NO_SANITIZE(what)
#endif
// MemorySanitizer annotations.
#if defined(MEMORY_SANITIZER) && !defined(OS_NACL)
#include <sanitizer/msan_interface.h>
// Mark a memory region fully initialized.
// Use this to annotate code that deliberately reads uninitialized data, for
// example a GC scavenging root set pointers from the stack.
#define MSAN_UNPOISON(p, size) __msan_unpoison(p, size)
// Check a memory region for initializedness, as if it was being used here.
// If any bits are uninitialized, crash with an MSan report.
// Use this to sanitize data which MSan won't be able to track, e.g. before
// passing data to another process via shared memory.
#define MSAN_CHECK_MEM_IS_INITIALIZED(p, size) \
__msan_check_mem_is_initialized(p, size)
#else // MEMORY_SANITIZER
#define MSAN_UNPOISON(p, size)
#define MSAN_CHECK_MEM_IS_INITIALIZED(p, size)
#endif // MEMORY_SANITIZER
// DISABLE_CFI_PERF -- Disable Control Flow Integrity for perf reasons.
#if !defined(DISABLE_CFI_PERF)
#if defined(__clang__) && defined(OFFICIAL_BUILD)
#define DISABLE_CFI_PERF __attribute__((no_sanitize("cfi")))
#else
#define DISABLE_CFI_PERF
#endif
#endif
// DISABLE_CFI_ICALL -- Disable Control Flow Integrity indirect call checks.
#if !defined(DISABLE_CFI_ICALL)
#if defined(OS_WIN)
// Windows also needs __declspec(guard(nocf)).
#define DISABLE_CFI_ICALL NO_SANITIZE("cfi-icall") __declspec(guard(nocf))
#else
#define DISABLE_CFI_ICALL NO_SANITIZE("cfi-icall")
#endif
#endif
#if !defined(DISABLE_CFI_ICALL)
#define DISABLE_CFI_ICALL
#endif
// Macro useful for writing cross-platform function pointers.
#if !defined(CDECL)
#if defined(OS_WIN)
#define CDECL __cdecl
#else // defined(OS_WIN)
#define CDECL
#endif // defined(OS_WIN)
#endif // !defined(CDECL)
// Macro for hinting that an expression is likely to be false.
#if !defined(UNLIKELY)
#if defined(COMPILER_GCC) || defined(__clang__)
#define UNLIKELY(x) __builtin_expect(!!(x), 0)
#else
#define UNLIKELY(x) (x)
#endif // defined(COMPILER_GCC)
#endif // !defined(UNLIKELY)
#if !defined(LIKELY)
#if defined(COMPILER_GCC) || defined(__clang__)
#define LIKELY(x) __builtin_expect(!!(x), 1)
#else
#define LIKELY(x) (x)
#endif // defined(COMPILER_GCC)
#endif // !defined(LIKELY)
// Compiler feature-detection.
// clang.llvm.org/docs/LanguageExtensions.html#has-feature-and-has-extension
#if defined(__has_feature)
#define HAS_FEATURE(FEATURE) __has_feature(FEATURE)
#else
#define HAS_FEATURE(FEATURE) 0
#endif
// Macro for telling -Wimplicit-fallthrough that a fallthrough is intentional.
#if defined(__clang__)
#define FALLTHROUGH [[clang::fallthrough]]
#else
#define FALLTHROUGH
#endif
#if defined(COMPILER_GCC)
#define PRETTY_FUNCTION __PRETTY_FUNCTION__
#elif defined(COMPILER_MSVC)
#define PRETTY_FUNCTION __FUNCSIG__
#else
// See https://en.cppreference.com/w/c/language/function_definition#func
#define PRETTY_FUNCTION __func__
#endif
#if !defined(CPU_ARM_NEON)
#if defined(__arm__)
#if !defined(__ARMEB__) && !defined(__ARM_EABI__) && !defined(__EABI__) && \
!defined(__VFP_FP__) && !defined(_WIN32_WCE) && !defined(ANDROID)
#error Chromium does not support middle endian architecture
#endif
#if defined(__ARM_NEON__)
#define CPU_ARM_NEON 1
#endif
#endif // defined(__arm__)
#endif // !defined(CPU_ARM_NEON)
#if !defined(HAVE_MIPS_MSA_INTRINSICS)
#if defined(__mips_msa) && defined(__mips_isa_rev) && (__mips_isa_rev >= 5)
#define HAVE_MIPS_MSA_INTRINSICS 1
#endif
#endif
#if defined(__clang__) && __has_attribute(uninitialized)
// Attribute "uninitialized" disables -ftrivial-auto-var-init=pattern for
// the specified variable.
// Library-wide alternative is
// 'configs -= [ "//build/config/compiler:default_init_stack_vars" ]' in .gn
// file.
//
// See "init_stack_vars" in build/config/compiler/BUILD.gn and
// http://crbug.com/977230
// "init_stack_vars" is enabled for non-official builds and we hope to enable it
// in official build in 2020 as well. The flag writes fixed pattern into
// uninitialized parts of all local variables. In rare cases such initialization
// is undesirable and attribute can be used:
// 1. Degraded performance
// In most cases compiler is able to remove additional stores. E.g. if memory is
// never accessed or properly initialized later. Preserved stores mostly will
// not affect program performance. However if compiler failed on some
// performance critical code we can get a visible regression in a benchmark.
// 2. memset, memcpy calls
// Compiler may replaces some memory writes with memset or memcpy calls. This is
// not -ftrivial-auto-var-init specific, but it can happen more likely with the
// flag. It can be a problem if code is not linked with C run-time library.
//
// Note: The flag is security risk mitigation feature. So in future the
// attribute uses should be avoided when possible. However to enable this
// mitigation on the most of the code we need to be less strict now and minimize
// number of exceptions later. So if in doubt feel free to use attribute, but
// please document the problem for someone who is going to cleanup it later.
// E.g. platform, bot, benchmark or test name in patch description or next to
// the attribute.
#define STACK_UNINITIALIZED __attribute__((uninitialized))
#else
#define STACK_UNINITIALIZED
#endif
// The ANALYZER_ASSUME_TRUE(bool arg) macro adds compiler-specific hints
// to Clang which control what code paths are statically analyzed,
// and is meant to be used in conjunction with assert & assert-like functions.
// The expression is passed straight through if analysis isn't enabled.
//
// ANALYZER_SKIP_THIS_PATH() suppresses static analysis for the current
// codepath and any other branching codepaths that might follow.
#if defined(__clang_analyzer__)
inline constexpr bool AnalyzerNoReturn() __attribute__((analyzer_noreturn)) {
return false;
}
inline constexpr bool AnalyzerAssumeTrue(bool arg) {
// AnalyzerNoReturn() is invoked and analysis is terminated if |arg| is
// false.
return arg || AnalyzerNoReturn();
}
#define ANALYZER_ASSUME_TRUE(arg) ::AnalyzerAssumeTrue(!!(arg))
#define ANALYZER_SKIP_THIS_PATH() static_cast<void>(::AnalyzerNoReturn())
#define ANALYZER_ALLOW_UNUSED(var) static_cast<void>(var);
#else // !defined(__clang_analyzer__)
#define ANALYZER_ASSUME_TRUE(arg) (arg)
#define ANALYZER_SKIP_THIS_PATH()
#define ANALYZER_ALLOW_UNUSED(var) static_cast<void>(var);
#endif // defined(__clang_analyzer__)
// Use nomerge attribute to disable optimization of merging multiple same calls.
#if defined(__clang__) && __has_attribute(nomerge)
#define NOMERGE [[clang::nomerge]]
#else
#define NOMERGE
#endif
// Marks a type as being eligible for the "trivial" ABI despite having a
// non-trivial destructor or copy/move constructor. Such types can be relocated
// after construction by simply copying their memory, which makes them eligible
// to be passed in registers. The canonical example is std::unique_ptr.
//
// Use with caution; this has some subtle effects on constructor/destructor
// ordering and will be very incorrect if the type relies on its address
// remaining constant. When used as a function argument (by value), the value
// may be constructed in the caller's stack frame, passed in a register, and
// then used and destructed in the callee's stack frame. A similar thing can
// occur when values are returned.
//
// TRIVIAL_ABI is not needed for types which have a trivial destructor and
// copy/move constructors, such as base::TimeTicks and other POD.
//
// It is also not likely to be effective on types too large to be passed in one
// or two registers on typical target ABIs.
//
// See also:
// https://clang.llvm.org/docs/AttributeReference.html#trivial-abi
// https://libcxx.llvm.org/docs/DesignDocs/UniquePtrTrivialAbi.html
#if defined(__clang__) && __has_attribute(trivial_abi)
#define TRIVIAL_ABI [[clang::trivial_abi]]
#else
#define TRIVIAL_ABI
#endif
#endif // !USING_CHROMIUM_INCLUDES
// Annotate a function indicating the caller must examine the return value.
// Use like:
// int foo() WARN_UNUSED_RESULT;
// To explicitly ignore a result, use std::ignore from <tuple>.
// Alternately use `[[nodiscard]]` with code that supports C++17.
#undef WARN_UNUSED_RESULT
#if defined(COMPILER_GCC) || defined(__clang__)
#define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
#define WARN_UNUSED_RESULT
#endif
// Annotate a variable indicating it's ok if the variable is not used.
// (Typically used to silence a compiler warning when the assignment
// is important for some other reason.)
// Use like:
// int x = ...;
// ALLOW_UNUSED_LOCAL(x);
// Alternately use `[[maybe_unused]]` with code that supports C++17.
#define ALLOW_UNUSED_LOCAL(x) (void)x
#endif // CEF_INCLUDE_BASE_CEF_COMPILER_SPECIFIC_H_

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// Copyright (c) 2021 Marshall A. Greenblatt. Portions copyright (c) 2021
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#ifndef CEF_INCLUDE_BASE_CEF_CXX17_BACKPORTS_H_
#define CEF_INCLUDE_BASE_CEF_CXX17_BACKPORTS_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/cxx17_backports.h"
#else // !USING_CHROMIUM_INCLUDES
// The following was removed from Chromium in https://crrev.com/78734f77be.
namespace base {
// C++14 implementation of C++17's std::size():
// http://en.cppreference.com/w/cpp/iterator/size
template <typename Container>
constexpr auto size(const Container& c) -> decltype(c.size()) {
return c.size();
}
template <typename T, size_t N>
constexpr size_t size(const T (&array)[N]) noexcept {
return N;
}
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_CXX17_BACKPORTS_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_CEF_LOCK_H_
#define CEF_INCLUDE_BASE_CEF_LOCK_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/synchronization/lock.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include "include/base/cef_logging.h"
#include "include/base/cef_platform_thread.h"
#include "include/base/internal/cef_lock_impl.h"
namespace base {
namespace cef_internal {
// A convenient wrapper for an OS specific critical section. The only real
// intelligence in this class is in debug mode for the support for the
// AssertAcquired() method.
class Lock {
public:
#if !DCHECK_IS_ON() // Optimized wrapper implementation
Lock() : lock_() {}
Lock(const Lock&) = delete;
Lock& operator=(const Lock&) = delete;
~Lock() {}
void Acquire() { lock_.Lock(); }
void Release() { lock_.Unlock(); }
// If the lock is not held, take it and return true. If the lock is already
// held by another thread, immediately return false. This must not be called
// by a thread already holding the lock (what happens is undefined and an
// assertion may fail).
bool Try() { return lock_.Try(); }
// Null implementation if not debug.
void AssertAcquired() const {}
#else
Lock();
~Lock();
// NOTE: Although windows critical sections support recursive locks, we do not
// allow this, and we will commonly fire a DCHECK() if a thread attempts to
// acquire the lock a second time (while already holding it).
void Acquire() {
lock_.Lock();
CheckUnheldAndMark();
}
void Release() {
CheckHeldAndUnmark();
lock_.Unlock();
}
bool Try() {
bool rv = lock_.Try();
if (rv) {
CheckUnheldAndMark();
}
return rv;
}
void AssertAcquired() const;
#endif // !DCHECK_IS_ON()
private:
#if DCHECK_IS_ON()
// Members and routines taking care of locks assertions.
// Note that this checks for recursive locks and allows them
// if the variable is set. This is allowed by the underlying implementation
// on windows but not on Posix, so we're doing unneeded checks on Posix.
// It's worth it to share the code.
void CheckHeldAndUnmark();
void CheckUnheldAndMark();
// All private data is implicitly protected by lock_.
// Be VERY careful to only access members under that lock.
base::PlatformThreadRef owning_thread_ref_;
#endif // DCHECK_IS_ON()
// Platform specific underlying lock implementation.
LockImpl lock_;
};
// A helper class that acquires the given Lock while the AutoLock is in scope.
class AutoLock {
public:
struct AlreadyAcquired {};
explicit AutoLock(Lock& lock) : lock_(lock) { lock_.Acquire(); }
AutoLock(Lock& lock, const AlreadyAcquired&) : lock_(lock) {
lock_.AssertAcquired();
}
AutoLock(const AutoLock&) = delete;
AutoLock& operator=(const AutoLock&) = delete;
~AutoLock() {
lock_.AssertAcquired();
lock_.Release();
}
private:
Lock& lock_;
};
// AutoUnlock is a helper that will Release() the |lock| argument in the
// constructor, and re-Acquire() it in the destructor.
class AutoUnlock {
public:
explicit AutoUnlock(Lock& lock) : lock_(lock) {
// We require our caller to have the lock.
lock_.AssertAcquired();
lock_.Release();
}
AutoUnlock(const AutoUnlock&) = delete;
AutoUnlock& operator=(const AutoUnlock&) = delete;
~AutoUnlock() { lock_.Acquire(); }
private:
Lock& lock_;
};
} // namespace cef_internal
// Implement classes in the cef_internal namespace and then expose them to the
// base namespace. This avoids conflicts with the base.lib implementation when
// linking sandbox support on Windows.
using cef_internal::AutoLock;
using cef_internal::AutoUnlock;
using cef_internal::Lock;
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_LOCK_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// The contents of this file are only available to applications that link
// against the libcef_dll_wrapper target.
//
// WARNING: Logging macros should not be used in the main/browser process before
// calling CefInitialize or in sub-processes before calling CefExecuteProcess.
//
// Instructions
// ------------
//
// Make a bunch of macros for logging. The way to log things is to stream
// things to LOG(<a particular severity level>). E.g.,
//
// LOG(INFO) << "Found " << num_cookies << " cookies";
//
// You can also do conditional logging:
//
// LOG_IF(INFO, num_cookies > 10) << "Got lots of cookies";
//
// The CHECK(condition) macro is active in both debug and release builds and
// effectively performs a LOG(FATAL) which terminates the process and
// generates a crashdump unless a debugger is attached.
//
// There are also "debug mode" logging macros like the ones above:
//
// DLOG(INFO) << "Found cookies";
//
// DLOG_IF(INFO, num_cookies > 10) << "Got lots of cookies";
//
// All "debug mode" logging is compiled away to nothing for non-debug mode
// compiles. LOG_IF and development flags also work well together
// because the code can be compiled away sometimes.
//
// We also have
//
// LOG_ASSERT(assertion);
// DLOG_ASSERT(assertion);
//
// which is syntactic sugar for {,D}LOG_IF(FATAL, assert fails) << assertion;
//
// There are "verbose level" logging macros. They look like
//
// VLOG(1) << "I'm printed when you run the program with --v=1 or more";
// VLOG(2) << "I'm printed when you run the program with --v=2 or more";
//
// These always log at the INFO log level (when they log at all).
// The verbose logging can also be turned on module-by-module. For instance,
// --vmodule=profile=2,icon_loader=1,browser_*=3,*/chromeos/*=4 --v=0
// will cause:
// a. VLOG(2) and lower messages to be printed from profile.{h,cc}
// b. VLOG(1) and lower messages to be printed from icon_loader.{h,cc}
// c. VLOG(3) and lower messages to be printed from files prefixed with
// "browser"
// d. VLOG(4) and lower messages to be printed from files under a
// "chromeos" directory.
// e. VLOG(0) and lower messages to be printed from elsewhere
//
// The wildcarding functionality shown by (c) supports both '*' (match
// 0 or more characters) and '?' (match any single character)
// wildcards. Any pattern containing a forward or backward slash will
// be tested against the whole pathname and not just the module.
// E.g., "*/foo/bar/*=2" would change the logging level for all code
// in source files under a "foo/bar" directory.
//
// There's also VLOG_IS_ON(n) "verbose level" condition macro. To be used as
//
// if (VLOG_IS_ON(2)) {
// // do some logging preparation and logging
// // that can't be accomplished with just VLOG(2) << ...;
// }
//
// There is also a VLOG_IF "verbose level" condition macro for sample
// cases, when some extra computation and preparation for logs is not
// needed.
//
// VLOG_IF(1, (size > 1024))
// << "I'm printed when size is more than 1024 and when you run the "
// "program with --v=1 or more";
//
// We also override the standard 'assert' to use 'DLOG_ASSERT'.
//
// Lastly, there is:
//
// PLOG(ERROR) << "Couldn't do foo";
// DPLOG(ERROR) << "Couldn't do foo";
// PLOG_IF(ERROR, cond) << "Couldn't do foo";
// DPLOG_IF(ERROR, cond) << "Couldn't do foo";
// PCHECK(condition) << "Couldn't do foo";
// DPCHECK(condition) << "Couldn't do foo";
//
// which append the last system error to the message in string form (taken from
// GetLastError() on Windows and errno on POSIX).
//
// The supported severity levels for macros that allow you to specify one
// are (in increasing order of severity) INFO, WARNING, ERROR, and FATAL.
//
// Very important: logging a message at the FATAL severity level causes
// the program to terminate (after the message is logged).
//
// There is the special severity of DFATAL, which logs FATAL in debug mode,
// ERROR in normal mode.
//
#ifndef CEF_INCLUDE_BASE_CEF_LOGGING_H_
#define CEF_INCLUDE_BASE_CEF_LOGGING_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/logging.h"
#include "base/notreached.h"
#elif defined(DCHECK)
// Do nothing if the macros provided by this header already exist.
// This can happen in cases where Chromium code is used directly by the
// client application. When using Chromium code directly always include
// the Chromium header first to avoid type conflicts.
// Always define the DCHECK_IS_ON macro which is used from other CEF headers.
#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
#define DCHECK_IS_ON() false
#else
#define DCHECK_IS_ON() true
#endif
#else // !defined(DCHECK)
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <cassert>
#include <cstring>
#include <sstream>
#include <string>
#include "include/base/cef_build.h"
#include "include/internal/cef_logging_internal.h"
namespace cef {
namespace logging {
// Gets the current log level.
inline int GetMinLogLevel() {
return cef_get_min_log_level();
}
// Gets the current vlog level for the given file (usually taken from
// __FILE__). Note that |N| is the size *with* the null terminator.
template <size_t N>
int GetVlogLevel(const char (&file)[N]) {
return cef_get_vlog_level(file, N);
}
typedef int LogSeverity;
const LogSeverity LOG_VERBOSE = -1; // This is level 1 verbosity
// Note: the log severities are used to index into the array of names,
// see log_severity_names.
const LogSeverity LOG_INFO = 0;
const LogSeverity LOG_WARNING = 1;
const LogSeverity LOG_ERROR = 2;
const LogSeverity LOG_FATAL = 3;
const LogSeverity LOG_NUM_SEVERITIES = 4;
// LOG_DFATAL is LOG_FATAL in debug mode, ERROR in normal mode
#ifdef NDEBUG
const LogSeverity LOG_DFATAL = LOG_ERROR;
#else
const LogSeverity LOG_DFATAL = LOG_FATAL;
#endif
// A few definitions of macros that don't generate much code. These are used
// by LOG() and LOG_IF, etc. Since these are used all over our code, it's
// better to have compact code for these operations.
#define COMPACT_GOOGLE_LOG_EX_INFO(ClassName, ...) \
::cef::logging::ClassName(__FILE__, __LINE__, ::cef::logging::LOG_INFO, \
##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_EX_WARNING(ClassName, ...) \
::cef::logging::ClassName(__FILE__, __LINE__, ::cef::logging::LOG_WARNING, \
##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_EX_ERROR(ClassName, ...) \
::cef::logging::ClassName(__FILE__, __LINE__, ::cef::logging::LOG_ERROR, \
##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_EX_FATAL(ClassName, ...) \
::cef::logging::ClassName(__FILE__, __LINE__, ::cef::logging::LOG_FATAL, \
##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_EX_DFATAL(ClassName, ...) \
::cef::logging::ClassName(__FILE__, __LINE__, ::cef::logging::LOG_DFATAL, \
##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_INFO COMPACT_GOOGLE_LOG_EX_INFO(LogMessage)
#define COMPACT_GOOGLE_LOG_WARNING COMPACT_GOOGLE_LOG_EX_WARNING(LogMessage)
#define COMPACT_GOOGLE_LOG_ERROR COMPACT_GOOGLE_LOG_EX_ERROR(LogMessage)
#define COMPACT_GOOGLE_LOG_FATAL COMPACT_GOOGLE_LOG_EX_FATAL(LogMessage)
#define COMPACT_GOOGLE_LOG_DFATAL COMPACT_GOOGLE_LOG_EX_DFATAL(LogMessage)
#if defined(OS_WIN)
// wingdi.h defines ERROR to be 0. When we call LOG(ERROR), it gets
// substituted with 0, and it expands to COMPACT_GOOGLE_LOG_0. To allow us
// to keep using this syntax, we define this macro to do the same thing
// as COMPACT_GOOGLE_LOG_ERROR, and also define ERROR the same way that
// the Windows SDK does for consistency.
#define ERROR 0
#define COMPACT_GOOGLE_LOG_EX_0(ClassName, ...) \
COMPACT_GOOGLE_LOG_EX_ERROR(ClassName, ##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_0 COMPACT_GOOGLE_LOG_ERROR
// Needed for LOG_IS_ON(ERROR).
const LogSeverity LOG_0 = LOG_ERROR;
#endif
// As special cases, we can assume that LOG_IS_ON(FATAL) always holds. Also,
// LOG_IS_ON(DFATAL) always holds in debug mode. In particular, CHECK()s will
// always fire if they fail.
#define LOG_IS_ON(severity) \
((::cef::logging::LOG_##severity) >= ::cef::logging::GetMinLogLevel())
// We can't do any caching tricks with VLOG_IS_ON() like the
// google-glog version since it requires GCC extensions. This means
// that using the v-logging functions in conjunction with --vmodule
// may be slow.
#define VLOG_IS_ON(verboselevel) \
((verboselevel) <= ::cef::logging::GetVlogLevel(__FILE__))
// Helper macro which avoids evaluating the arguments to a stream if
// the condition doesn't hold.
#define LAZY_STREAM(stream, condition) \
!(condition) ? (void)0 : ::cef::logging::LogMessageVoidify() & (stream)
// We use the preprocessor's merging operator, "##", so that, e.g.,
// LOG(INFO) becomes the token COMPACT_GOOGLE_LOG_INFO. There's some funny
// subtle difference between ostream member streaming functions (e.g.,
// ostream::operator<<(int) and ostream non-member streaming functions
// (e.g., ::operator<<(ostream&, string&): it turns out that it's
// impossible to stream something like a string directly to an unnamed
// ostream. We employ a neat hack by calling the stream() member
// function of LogMessage which seems to avoid the problem.
#define LOG_STREAM(severity) COMPACT_GOOGLE_LOG_##severity.stream()
#define LOG(severity) LAZY_STREAM(LOG_STREAM(severity), LOG_IS_ON(severity))
#define LOG_IF(severity, condition) \
LAZY_STREAM(LOG_STREAM(severity), LOG_IS_ON(severity) && (condition))
#define SYSLOG(severity) LOG(severity)
#define SYSLOG_IF(severity, condition) LOG_IF(severity, condition)
// The VLOG macros log with negative verbosities.
#define VLOG_STREAM(verbose_level) \
cef::logging::LogMessage(__FILE__, __LINE__, -verbose_level).stream()
#define VLOG(verbose_level) \
LAZY_STREAM(VLOG_STREAM(verbose_level), VLOG_IS_ON(verbose_level))
#define VLOG_IF(verbose_level, condition) \
LAZY_STREAM(VLOG_STREAM(verbose_level), \
VLOG_IS_ON(verbose_level) && (condition))
#if defined(OS_WIN)
#define VPLOG_STREAM(verbose_level) \
cef::logging::Win32ErrorLogMessage(__FILE__, __LINE__, -verbose_level, \
::cef::logging::GetLastSystemErrorCode()) \
.stream()
#elif defined(OS_POSIX)
#define VPLOG_STREAM(verbose_level) \
cef::logging::ErrnoLogMessage(__FILE__, __LINE__, -verbose_level, \
::cef::logging::GetLastSystemErrorCode()) \
.stream()
#endif
#define VPLOG(verbose_level) \
LAZY_STREAM(VPLOG_STREAM(verbose_level), VLOG_IS_ON(verbose_level))
#define VPLOG_IF(verbose_level, condition) \
LAZY_STREAM(VPLOG_STREAM(verbose_level), \
VLOG_IS_ON(verbose_level) && (condition))
// TODO(akalin): Add more VLOG variants, e.g. VPLOG.
#define LOG_ASSERT(condition) \
LOG_IF(FATAL, !(condition)) << "Assert failed: " #condition ". "
#define SYSLOG_ASSERT(condition) \
SYSLOG_IF(FATAL, !(condition)) << "Assert failed: " #condition ". "
#if defined(OS_WIN)
#define PLOG_STREAM(severity) \
COMPACT_GOOGLE_LOG_EX_##severity(Win32ErrorLogMessage, \
::cef::logging::GetLastSystemErrorCode()) \
.stream()
#elif defined(OS_POSIX)
#define PLOG_STREAM(severity) \
COMPACT_GOOGLE_LOG_EX_##severity(ErrnoLogMessage, \
::cef::logging::GetLastSystemErrorCode()) \
.stream()
#endif
#define PLOG(severity) LAZY_STREAM(PLOG_STREAM(severity), LOG_IS_ON(severity))
#define PLOG_IF(severity, condition) \
LAZY_STREAM(PLOG_STREAM(severity), LOG_IS_ON(severity) && (condition))
// The actual stream used isn't important.
#define EAT_STREAM_PARAMETERS \
true ? (void)0 : ::cef::logging::LogMessageVoidify() & LOG_STREAM(FATAL)
// CHECK dies with a fatal error if condition is not true. It is *not*
// controlled by NDEBUG, so the check will be executed regardless of
// compilation mode.
//
// We make sure CHECK et al. always evaluates their arguments, as
// doing CHECK(FunctionWithSideEffect()) is a common idiom.
#define CHECK(condition) \
LAZY_STREAM(LOG_STREAM(FATAL), !(condition)) \
<< "Check failed: " #condition ". "
#define PCHECK(condition) \
LAZY_STREAM(PLOG_STREAM(FATAL), !(condition)) \
<< "Check failed: " #condition ". "
// Helper macro for binary operators.
// Don't use this macro directly in your code, use CHECK_EQ et al below.
//
// TODO(akalin): Rewrite this so that constructs like if (...)
// CHECK_EQ(...) else { ... } work properly.
#define CHECK_OP(name, op, val1, val2) \
if (std::string* _result = cef::logging::Check##name##Impl( \
(val1), (val2), #val1 " " #op " " #val2)) \
cef::logging::LogMessage(__FILE__, __LINE__, _result).stream()
// Build the error message string. This is separate from the "Impl"
// function template because it is not performance critical and so can
// be out of line, while the "Impl" code should be inline. Caller
// takes ownership of the returned string.
template <class t1, class t2>
std::string* MakeCheckOpString(const t1& v1, const t2& v2, const char* names) {
std::ostringstream ss;
ss << names << " (" << v1 << " vs. " << v2 << ")";
std::string* msg = new std::string(ss.str());
return msg;
}
// MSVC doesn't like complex extern templates and DLLs.
#if !defined(COMPILER_MSVC)
// Commonly used instantiations of MakeCheckOpString<>. Explicitly instantiated
// in logging.cc.
extern template std::string* MakeCheckOpString<int, int>(const int&,
const int&,
const char* names);
extern template std::string* MakeCheckOpString<unsigned long, unsigned long>(
const unsigned long&,
const unsigned long&,
const char* names);
extern template std::string* MakeCheckOpString<unsigned long, unsigned int>(
const unsigned long&,
const unsigned int&,
const char* names);
extern template std::string* MakeCheckOpString<unsigned int, unsigned long>(
const unsigned int&,
const unsigned long&,
const char* names);
extern template std::string* MakeCheckOpString<std::string, std::string>(
const std::string&,
const std::string&,
const char* name);
#endif
// Helper functions for CHECK_OP macro.
// The (int, int) specialization works around the issue that the compiler
// will not instantiate the template version of the function on values of
// unnamed enum type - see comment below.
#define DEFINE_CHECK_OP_IMPL(name, op) \
template <class t1, class t2> \
inline std::string* Check##name##Impl(const t1& v1, const t2& v2, \
const char* names) { \
if (v1 op v2) \
return NULL; \
else \
return MakeCheckOpString(v1, v2, names); \
} \
inline std::string* Check##name##Impl(int v1, int v2, const char* names) { \
if (v1 op v2) \
return NULL; \
else \
return MakeCheckOpString(v1, v2, names); \
}
DEFINE_CHECK_OP_IMPL(EQ, ==)
DEFINE_CHECK_OP_IMPL(NE, !=)
DEFINE_CHECK_OP_IMPL(LE, <=)
DEFINE_CHECK_OP_IMPL(LT, <)
DEFINE_CHECK_OP_IMPL(GE, >=)
DEFINE_CHECK_OP_IMPL(GT, >)
#undef DEFINE_CHECK_OP_IMPL
#define CHECK_EQ(val1, val2) CHECK_OP(EQ, ==, val1, val2)
#define CHECK_NE(val1, val2) CHECK_OP(NE, !=, val1, val2)
#define CHECK_LE(val1, val2) CHECK_OP(LE, <=, val1, val2)
#define CHECK_LT(val1, val2) CHECK_OP(LT, <, val1, val2)
#define CHECK_GE(val1, val2) CHECK_OP(GE, >=, val1, val2)
#define CHECK_GT(val1, val2) CHECK_OP(GT, >, val1, val2)
#if defined(NDEBUG)
#define ENABLE_DLOG 0
#else
#define ENABLE_DLOG 1
#endif
#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
#define DCHECK_IS_ON() 0
#else
#define DCHECK_IS_ON() 1
#endif
// Definitions for DLOG et al.
#if ENABLE_DLOG
#define DLOG_IS_ON(severity) LOG_IS_ON(severity)
#define DLOG_IF(severity, condition) LOG_IF(severity, condition)
#define DLOG_ASSERT(condition) LOG_ASSERT(condition)
#define DPLOG_IF(severity, condition) PLOG_IF(severity, condition)
#define DVLOG_IF(verboselevel, condition) VLOG_IF(verboselevel, condition)
#define DVPLOG_IF(verboselevel, condition) VPLOG_IF(verboselevel, condition)
#else // ENABLE_DLOG
// If ENABLE_DLOG is off, we want to avoid emitting any references to
// |condition| (which may reference a variable defined only if NDEBUG
// is not defined). Contrast this with DCHECK et al., which has
// different behavior.
#define DLOG_IS_ON(severity) false
#define DLOG_IF(severity, condition) EAT_STREAM_PARAMETERS
#define DLOG_ASSERT(condition) EAT_STREAM_PARAMETERS
#define DPLOG_IF(severity, condition) EAT_STREAM_PARAMETERS
#define DVLOG_IF(verboselevel, condition) EAT_STREAM_PARAMETERS
#define DVPLOG_IF(verboselevel, condition) EAT_STREAM_PARAMETERS
#endif // ENABLE_DLOG
// DEBUG_MODE is for uses like
// if (DEBUG_MODE) foo.CheckThatFoo();
// instead of
// #ifndef NDEBUG
// foo.CheckThatFoo();
// #endif
//
// We tie its state to ENABLE_DLOG.
enum { DEBUG_MODE = ENABLE_DLOG };
#undef ENABLE_DLOG
#define DLOG(severity) LAZY_STREAM(LOG_STREAM(severity), DLOG_IS_ON(severity))
#define DPLOG(severity) LAZY_STREAM(PLOG_STREAM(severity), DLOG_IS_ON(severity))
#define DVLOG(verboselevel) DVLOG_IF(verboselevel, VLOG_IS_ON(verboselevel))
#define DVPLOG(verboselevel) DVPLOG_IF(verboselevel, VLOG_IS_ON(verboselevel))
// Definitions for DCHECK et al.
#if DCHECK_IS_ON()
#define COMPACT_GOOGLE_LOG_EX_DCHECK(ClassName, ...) \
COMPACT_GOOGLE_LOG_EX_FATAL(ClassName, ##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_DCHECK COMPACT_GOOGLE_LOG_FATAL
const LogSeverity LOG_DCHECK = LOG_FATAL;
#else // DCHECK_IS_ON()
// These are just dummy values.
#define COMPACT_GOOGLE_LOG_EX_DCHECK(ClassName, ...) \
COMPACT_GOOGLE_LOG_EX_INFO(ClassName, ##__VA_ARGS__)
#define COMPACT_GOOGLE_LOG_DCHECK COMPACT_GOOGLE_LOG_INFO
const LogSeverity LOG_DCHECK = LOG_INFO;
#endif // DCHECK_IS_ON()
// DCHECK et al. make sure to reference |condition| regardless of
// whether DCHECKs are enabled; this is so that we don't get unused
// variable warnings if the only use of a variable is in a DCHECK.
// This behavior is different from DLOG_IF et al.
#define DCHECK(condition) \
LAZY_STREAM(LOG_STREAM(DCHECK), DCHECK_IS_ON() && !(condition)) \
<< "Check failed: " #condition ". "
#define DPCHECK(condition) \
LAZY_STREAM(PLOG_STREAM(DCHECK), DCHECK_IS_ON() && !(condition)) \
<< "Check failed: " #condition ". "
// Helper macro for binary operators.
// Don't use this macro directly in your code, use DCHECK_EQ et al below.
#define DCHECK_OP(name, op, val1, val2) \
if (DCHECK_IS_ON()) \
if (std::string* _result = cef::logging::Check##name##Impl( \
(val1), (val2), #val1 " " #op " " #val2)) \
cef::logging::LogMessage(__FILE__, __LINE__, ::cef::logging::LOG_DCHECK, \
_result) \
.stream()
// Equality/Inequality checks - compare two values, and log a
// LOG_DCHECK message including the two values when the result is not
// as expected. The values must have operator<<(ostream, ...)
// defined.
//
// You may append to the error message like so:
// DCHECK_NE(1, 2) << ": The world must be ending!";
//
// We are very careful to ensure that each argument is evaluated exactly
// once, and that anything which is legal to pass as a function argument is
// legal here. In particular, the arguments may be temporary expressions
// which will end up being destroyed at the end of the apparent statement,
// for example:
// DCHECK_EQ(string("abc")[1], 'b');
//
// WARNING: These may not compile correctly if one of the arguments is a pointer
// and the other is NULL. To work around this, simply static_cast NULL to the
// type of the desired pointer.
#define DCHECK_EQ(val1, val2) DCHECK_OP(EQ, ==, val1, val2)
#define DCHECK_NE(val1, val2) DCHECK_OP(NE, !=, val1, val2)
#define DCHECK_LE(val1, val2) DCHECK_OP(LE, <=, val1, val2)
#define DCHECK_LT(val1, val2) DCHECK_OP(LT, <, val1, val2)
#define DCHECK_GE(val1, val2) DCHECK_OP(GE, >=, val1, val2)
#define DCHECK_GT(val1, val2) DCHECK_OP(GT, >, val1, val2)
#define NOTREACHED() DCHECK(false)
// Redefine the standard assert to use our nice log files
#undef assert
#define assert(x) DLOG_ASSERT(x)
// This class more or less represents a particular log message. You
// create an instance of LogMessage and then stream stuff to it.
// When you finish streaming to it, ~LogMessage is called and the
// full message gets streamed to the appropriate destination.
//
// You shouldn't actually use LogMessage's constructor to log things,
// though. You should use the LOG() macro (and variants thereof)
// above.
class LogMessage {
public:
// Used for LOG(severity).
LogMessage(const char* file, int line, LogSeverity severity);
// Used for CHECK_EQ(), etc. Takes ownership of the given string.
// Implied severity = LOG_FATAL.
LogMessage(const char* file, int line, std::string* result);
// Used for DCHECK_EQ(), etc. Takes ownership of the given string.
LogMessage(const char* file,
int line,
LogSeverity severity,
std::string* result);
LogMessage(const LogMessage&) = delete;
LogMessage& operator=(const LogMessage&) = delete;
~LogMessage();
std::ostream& stream() { return stream_; }
private:
LogSeverity severity_;
std::ostringstream stream_;
// The file and line information passed in to the constructor.
const char* file_;
const int line_;
#if defined(OS_WIN)
// Stores the current value of GetLastError in the constructor and restores
// it in the destructor by calling SetLastError.
// This is useful since the LogMessage class uses a lot of Win32 calls
// that will lose the value of GLE and the code that called the log function
// will have lost the thread error value when the log call returns.
class SaveLastError {
public:
SaveLastError();
~SaveLastError();
unsigned long get_error() const { return last_error_; }
protected:
unsigned long last_error_;
};
SaveLastError last_error_;
#endif
};
// A non-macro interface to the log facility; (useful
// when the logging level is not a compile-time constant).
inline void LogAtLevel(int const log_level, std::string const& msg) {
LogMessage(__FILE__, __LINE__, log_level).stream() << msg;
}
// This class is used to explicitly ignore values in the conditional
// logging macros. This avoids compiler warnings like "value computed
// is not used" and "statement has no effect".
class LogMessageVoidify {
public:
LogMessageVoidify() {}
// This has to be an operator with a precedence lower than << but
// higher than ?:
void operator&(std::ostream&) {}
};
#if defined(OS_WIN)
typedef unsigned long SystemErrorCode;
#elif defined(OS_POSIX)
typedef int SystemErrorCode;
#endif
// Alias for ::GetLastError() on Windows and errno on POSIX. Avoids having to
// pull in windows.h just for GetLastError() and DWORD.
SystemErrorCode GetLastSystemErrorCode();
std::string SystemErrorCodeToString(SystemErrorCode error_code);
#if defined(OS_WIN)
// Appends a formatted system message of the GetLastError() type.
class Win32ErrorLogMessage {
public:
Win32ErrorLogMessage(const char* file,
int line,
LogSeverity severity,
SystemErrorCode err);
Win32ErrorLogMessage(const Win32ErrorLogMessage&) = delete;
Win32ErrorLogMessage& operator=(const Win32ErrorLogMessage&) = delete;
// Appends the error message before destructing the encapsulated class.
~Win32ErrorLogMessage();
std::ostream& stream() { return log_message_.stream(); }
private:
SystemErrorCode err_;
LogMessage log_message_;
};
#elif defined(OS_POSIX)
// Appends a formatted system message of the errno type
class ErrnoLogMessage {
public:
ErrnoLogMessage(const char* file,
int line,
LogSeverity severity,
SystemErrorCode err);
ErrnoLogMessage(const ErrnoLogMessage&) = delete;
ErrnoLogMessage& operator=(const ErrnoLogMessage&) = delete;
// Appends the error message before destructing the encapsulated class.
~ErrnoLogMessage();
std::ostream& stream() { return log_message_.stream(); }
private:
SystemErrorCode err_;
LogMessage log_message_;
};
#endif // OS_WIN
} // namespace logging
} // namespace cef
// These functions are provided as a convenience for logging, which is where we
// use streams (it is against Google style to use streams in other places). It
// is designed to allow you to emit non-ASCII Unicode strings to the log file,
// which is normally ASCII. It is relatively slow, so try not to use it for
// common cases. Non-ASCII characters will be converted to UTF-8 by these
// operators.
std::ostream& operator<<(std::ostream& out, const wchar_t* wstr);
inline std::ostream& operator<<(std::ostream& out, const std::wstring& wstr) {
return out << wstr.c_str();
}
// The NOTIMPLEMENTED() macro annotates codepaths which have
// not been implemented yet.
//
// The implementation of this macro is controlled by NOTIMPLEMENTED_POLICY:
// 0 -- Do nothing (stripped by compiler)
// 1 -- Warn at compile time
// 2 -- Fail at compile time
// 3 -- Fail at runtime (DCHECK)
// 4 -- [default] LOG(ERROR) at runtime
// 5 -- LOG(ERROR) at runtime, only once per call-site
#ifndef NOTIMPLEMENTED_POLICY
#if defined(OS_ANDROID) && defined(OFFICIAL_BUILD)
#define NOTIMPLEMENTED_POLICY 0
#else
// Select default policy: LOG(ERROR)
#define NOTIMPLEMENTED_POLICY 4
#endif
#endif
#if defined(COMPILER_GCC)
// On Linux, with GCC, we can use __PRETTY_FUNCTION__ to get the demangled name
// of the current function in the NOTIMPLEMENTED message.
#define NOTIMPLEMENTED_MSG "Not implemented reached in " << __PRETTY_FUNCTION__
#else
#define NOTIMPLEMENTED_MSG "NOT IMPLEMENTED"
#endif
#if NOTIMPLEMENTED_POLICY == 0
#define NOTIMPLEMENTED() EAT_STREAM_PARAMETERS
#elif NOTIMPLEMENTED_POLICY == 1
// TODO, figure out how to generate a warning
#define NOTIMPLEMENTED() COMPILE_ASSERT(false, NOT_IMPLEMENTED)
#elif NOTIMPLEMENTED_POLICY == 2
#define NOTIMPLEMENTED() COMPILE_ASSERT(false, NOT_IMPLEMENTED)
#elif NOTIMPLEMENTED_POLICY == 3
#define NOTIMPLEMENTED() NOTREACHED()
#elif NOTIMPLEMENTED_POLICY == 4
#define NOTIMPLEMENTED() LOG(ERROR) << NOTIMPLEMENTED_MSG
#elif NOTIMPLEMENTED_POLICY == 5
#define NOTIMPLEMENTED() \
do { \
static bool logged_once = false; \
LOG_IF(ERROR, !logged_once) << NOTIMPLEMENTED_MSG; \
logged_once = true; \
} while (0); \
EAT_STREAM_PARAMETERS
#endif
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_LOGGING_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_CEF_MACROS_H_
#define CEF_INCLUDE_BASE_CEF_MACROS_H_
#pragma once
#if !defined(USING_CHROMIUM_INCLUDES)
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
// ALL DISALLOW_xxx MACROS ARE DEPRECATED; DO NOT USE IN NEW CODE.
// Use explicit deletions instead. See the section on copyability/movability in
// //styleguide/c++/c++-dos-and-donts.md for more information.
// DEPRECATED: See above. Makes a class uncopyable.
#define DISALLOW_COPY(TypeName) TypeName(const TypeName&) = delete
// DEPRECATED: See above. Makes a class unassignable.
#define DISALLOW_ASSIGN(TypeName) TypeName& operator=(const TypeName&) = delete
// DEPRECATED: See above. Makes a class uncopyable and unassignable.
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
DISALLOW_COPY(TypeName); \
DISALLOW_ASSIGN(TypeName)
// DEPRECATED: See above. Disallow all implicit constructors, namely the
// default constructor, copy constructor and operator= functions.
#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
TypeName() = delete; \
DISALLOW_COPY_AND_ASSIGN(TypeName)
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_MACROS_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// WARNING: You should *NOT* be using this class directly. PlatformThread is
// the low-level platform-specific abstraction to the OS's threading interface.
// You should instead be using a message-loop driven Thread, see thread.h.
#ifndef CEF_INCLUDE_BASE_PLATFORM_THREAD_H_
#define CEF_INCLUDE_BASE_PLATFORM_THREAD_H_
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/threading/platform_thread.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include "include/base/cef_basictypes.h"
#include "include/base/cef_build.h"
#include "include/internal/cef_thread_internal.h"
namespace base {
// Used for logging. Always an integer value.
typedef cef_platform_thread_id_t PlatformThreadId;
// Used for thread checking and debugging.
// Meant to be as fast as possible.
// These are produced by PlatformThread::CurrentRef(), and used to later
// check if we are on the same thread or not by using ==. These are safe
// to copy between threads, but can't be copied to another process as they
// have no meaning there. Also, the internal identifier can be re-used
// after a thread dies, so a PlatformThreadRef cannot be reliably used
// to distinguish a new thread from an old, dead thread.
class PlatformThreadRef {
public:
typedef cef_platform_thread_handle_t RefType;
PlatformThreadRef() : id_(0) {}
explicit PlatformThreadRef(RefType id) : id_(id) {}
bool operator==(PlatformThreadRef other) const { return id_ == other.id_; }
bool is_null() const { return id_ == 0; }
private:
RefType id_;
};
// A namespace for low-level thread functions.
// Chromium uses a class with static methods but CEF uses an actual namespace
// to avoid linker problems with the sandbox libaries on Windows.
namespace PlatformThread {
// Gets the current thread id, which may be useful for logging purposes.
inline PlatformThreadId CurrentId() {
return cef_get_current_platform_thread_id();
}
// Gets the current thread reference, which can be used to check if
// we're on the right thread quickly.
inline PlatformThreadRef CurrentRef() {
return PlatformThreadRef(cef_get_current_platform_thread_handle());
}
} // namespace PlatformThread
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_PLATFORM_THREAD_H_

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// Copyright (c) 2021 Marshall A. Greenblatt. Portions copyright (c) 2015
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef INCLUDE_BASE_CEF_PTR_UTIL_H_
#define INCLUDE_BASE_CEF_PTR_UTIL_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/memory/ptr_util.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <memory>
#include <utility>
namespace base {
// Helper to transfer ownership of a raw pointer to a std::unique_ptr<T>.
// Note that std::unique_ptr<T> has very different semantics from
// std::unique_ptr<T[]>: do not use this helper for array allocations.
template <typename T>
std::unique_ptr<T> WrapUnique(T* ptr) {
return std::unique_ptr<T>(ptr);
}
} // namespace base
#endif // INCLUDE_BASE_CEF_PTR_UTIL_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#ifndef CEF_INCLUDE_BASE_CEF_REF_COUNTED_H_
#define CEF_INCLUDE_BASE_CEF_REF_COUNTED_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/memory/ref_counted.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <stddef.h>
#include <utility>
#include "include/base/cef_atomic_ref_count.h"
#include "include/base/cef_build.h"
#include "include/base/cef_compiler_specific.h"
#include "include/base/cef_logging.h"
#include "include/base/cef_scoped_refptr.h"
#include "include/base/cef_template_util.h"
#include "include/base/cef_thread_checker.h"
namespace base {
namespace cef_subtle {
class RefCountedBase {
public:
bool HasOneRef() const { return ref_count_ == 1; }
bool HasAtLeastOneRef() const { return ref_count_ >= 1; }
protected:
explicit RefCountedBase(StartRefCountFromZeroTag) {
#if DCHECK_IS_ON()
thread_checker_.DetachFromThread();
#endif
}
explicit RefCountedBase(StartRefCountFromOneTag) : ref_count_(1) {
#if DCHECK_IS_ON()
needs_adopt_ref_ = true;
thread_checker_.DetachFromThread();
#endif
}
RefCountedBase(const RefCountedBase&) = delete;
RefCountedBase& operator=(const RefCountedBase&) = delete;
~RefCountedBase() {
#if DCHECK_IS_ON()
DCHECK(in_dtor_) << "RefCounted object deleted without calling Release()";
#endif
}
void AddRef() const {
#if DCHECK_IS_ON()
DCHECK(!in_dtor_);
DCHECK(!needs_adopt_ref_)
<< "This RefCounted object is created with non-zero reference count."
<< " The first reference to such a object has to be made by AdoptRef or"
<< " MakeRefCounted.";
if (ref_count_ >= 1) {
DCHECK(CalledOnValidThread());
}
#endif
AddRefImpl();
}
// Returns true if the object should self-delete.
bool Release() const {
ReleaseImpl();
#if DCHECK_IS_ON()
DCHECK(!in_dtor_);
if (ref_count_ == 0)
in_dtor_ = true;
if (ref_count_ >= 1)
DCHECK(CalledOnValidThread());
if (ref_count_ == 1)
thread_checker_.DetachFromThread();
#endif
return ref_count_ == 0;
}
// Returns true if it is safe to read or write the object, from a thread
// safety standpoint. Should be DCHECK'd from the methods of RefCounted
// classes if there is a danger of objects being shared across threads.
//
// This produces fewer false positives than adding a separate ThreadChecker
// into the subclass, because it automatically detaches from the thread when
// the reference count is 1 (and never fails if there is only one reference).
//
// This means unlike a separate ThreadChecker, it will permit a singly
// referenced object to be passed between threads (not holding a reference on
// the sending thread), but will trap if the sending thread holds onto a
// reference, or if the object is accessed from multiple threads
// simultaneously.
bool IsOnValidThread() const {
#if DCHECK_IS_ON()
return ref_count_ <= 1 || CalledOnValidThread();
#else
return true;
#endif
}
private:
template <typename U>
friend scoped_refptr<U> base::AdoptRef(U*);
void Adopted() const {
#if DCHECK_IS_ON()
DCHECK(needs_adopt_ref_);
needs_adopt_ref_ = false;
#endif
}
#if defined(ARCH_CPU_64_BITS)
void AddRefImpl() const;
void ReleaseImpl() const;
#else
void AddRefImpl() const { ++ref_count_; }
void ReleaseImpl() const { --ref_count_; }
#endif
#if DCHECK_IS_ON()
bool CalledOnValidThread() const;
#endif
mutable uint32_t ref_count_ = 0;
static_assert(std::is_unsigned<decltype(ref_count_)>::value,
"ref_count_ must be an unsigned type.");
#if DCHECK_IS_ON()
mutable bool needs_adopt_ref_ = false;
mutable bool in_dtor_ = false;
mutable ThreadChecker thread_checker_;
#endif
};
class RefCountedThreadSafeBase {
public:
bool HasOneRef() const;
bool HasAtLeastOneRef() const;
protected:
explicit constexpr RefCountedThreadSafeBase(StartRefCountFromZeroTag) {}
explicit constexpr RefCountedThreadSafeBase(StartRefCountFromOneTag)
: ref_count_(1) {
#if DCHECK_IS_ON()
needs_adopt_ref_ = true;
#endif
}
RefCountedThreadSafeBase(const RefCountedThreadSafeBase&) = delete;
RefCountedThreadSafeBase& operator=(const RefCountedThreadSafeBase&) = delete;
#if DCHECK_IS_ON()
~RefCountedThreadSafeBase();
#else
~RefCountedThreadSafeBase() = default;
#endif
// Release and AddRef are suitable for inlining on X86 because they generate
// very small code threads. On other platforms (ARM), it causes a size
// regression and is probably not worth it.
#if defined(ARCH_CPU_X86_FAMILY)
// Returns true if the object should self-delete.
bool Release() const { return ReleaseImpl(); }
void AddRef() const { AddRefImpl(); }
void AddRefWithCheck() const { AddRefWithCheckImpl(); }
#else
// Returns true if the object should self-delete.
bool Release() const;
void AddRef() const;
void AddRefWithCheck() const;
#endif
private:
template <typename U>
friend scoped_refptr<U> base::AdoptRef(U*);
void Adopted() const {
#if DCHECK_IS_ON()
DCHECK(needs_adopt_ref_);
needs_adopt_ref_ = false;
#endif
}
ALWAYS_INLINE void AddRefImpl() const {
#if DCHECK_IS_ON()
DCHECK(!in_dtor_);
DCHECK(!needs_adopt_ref_)
<< "This RefCounted object is created with non-zero reference count."
<< " The first reference to such a object has to be made by AdoptRef or"
<< " MakeRefCounted.";
#endif
ref_count_.Increment();
}
ALWAYS_INLINE void AddRefWithCheckImpl() const {
#if DCHECK_IS_ON()
DCHECK(!in_dtor_);
DCHECK(!needs_adopt_ref_)
<< "This RefCounted object is created with non-zero reference count."
<< " The first reference to such a object has to be made by AdoptRef or"
<< " MakeRefCounted.";
#endif
CHECK(ref_count_.Increment() > 0);
}
ALWAYS_INLINE bool ReleaseImpl() const {
#if DCHECK_IS_ON()
DCHECK(!in_dtor_);
DCHECK(!ref_count_.IsZero());
#endif
if (!ref_count_.Decrement()) {
#if DCHECK_IS_ON()
in_dtor_ = true;
#endif
return true;
}
return false;
}
mutable AtomicRefCount ref_count_{0};
#if DCHECK_IS_ON()
mutable bool needs_adopt_ref_ = false;
mutable bool in_dtor_ = false;
#endif
};
// ScopedAllowCrossThreadRefCountAccess disables the check documented on
// RefCounted below for rare pre-existing use cases where thread-safety was
// guaranteed through other means (e.g. explicit sequencing of calls across
// execution threads when bouncing between threads in order). New callers
// should refrain from using this (callsites handling thread-safety through
// locks should use RefCountedThreadSafe per the overhead of its atomics being
// negligible compared to locks anyways and callsites doing explicit sequencing
// should properly std::move() the ref to avoid hitting this check).
// TODO(tzik): Cleanup existing use cases and remove
// ScopedAllowCrossThreadRefCountAccess.
class ScopedAllowCrossThreadRefCountAccess final {
public:
#if DCHECK_IS_ON()
ScopedAllowCrossThreadRefCountAccess();
~ScopedAllowCrossThreadRefCountAccess();
#else
ScopedAllowCrossThreadRefCountAccess() {}
~ScopedAllowCrossThreadRefCountAccess() {}
#endif
};
} // namespace cef_subtle
using ScopedAllowCrossThreadRefCountAccess =
cef_subtle::ScopedAllowCrossThreadRefCountAccess;
//
// A base class for reference counted classes. Otherwise, known as a cheap
// knock-off of WebKit's RefCounted<T> class. To use this, just extend your
// class from it like so:
//
// class MyFoo : public base::RefCounted<MyFoo> {
// ...
// private:
// friend class base::RefCounted<MyFoo>;
// ~MyFoo();
// };
//
// Usage Notes:
// 1. You should always make your destructor non-public, to avoid any code
// deleting the object accidentally while there are references to it.
// 2. You should always make the ref-counted base class a friend of your class,
// so that it can access the destructor.
//
// The ref count manipulation to RefCounted is NOT thread safe and has DCHECKs
// to trap unsafe cross thread usage. A subclass instance of RefCounted can be
// passed to another execution thread only when its ref count is 1. If the ref
// count is more than 1, the RefCounted class verifies the ref updates are made
// on the same execution thread as the previous ones. The subclass can also
// manually call IsOnValidThread to trap other non-thread-safe accesses; see
// the documentation for that method.
//
//
// The reference count starts from zero by default, and we intended to migrate
// to start-from-one ref count. Put REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE() to
// the ref counted class to opt-in.
//
// If an object has start-from-one ref count, the first scoped_refptr need to be
// created by base::AdoptRef() or base::MakeRefCounted(). We can use
// base::MakeRefCounted() to create create both type of ref counted object.
//
// The motivations to use start-from-one ref count are:
// - Start-from-one ref count doesn't need the ref count increment for the
// first reference.
// - It can detect an invalid object acquisition for a being-deleted object
// that has zero ref count. That tends to happen on custom deleter that
// delays the deletion.
// TODO(tzik): Implement invalid acquisition detection.
// - Behavior parity to Blink's WTF::RefCounted, whose count starts from one.
// And start-from-one ref count is a step to merge WTF::RefCounted into
// base::RefCounted.
//
#define REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE() \
static constexpr ::base::cef_subtle::StartRefCountFromOneTag \
kRefCountPreference = ::base::cef_subtle::kStartRefCountFromOneTag
template <class T, typename Traits>
class RefCounted;
template <typename T>
struct DefaultRefCountedTraits {
static void Destruct(const T* x) {
RefCounted<T, DefaultRefCountedTraits>::DeleteInternal(x);
}
};
template <class T, typename Traits = DefaultRefCountedTraits<T>>
class RefCounted : public cef_subtle::RefCountedBase {
public:
static constexpr cef_subtle::StartRefCountFromZeroTag kRefCountPreference =
cef_subtle::kStartRefCountFromZeroTag;
RefCounted() : cef_subtle::RefCountedBase(T::kRefCountPreference) {}
RefCounted(const RefCounted&) = delete;
RefCounted& operator=(const RefCounted&) = delete;
void AddRef() const { cef_subtle::RefCountedBase::AddRef(); }
void Release() const {
if (cef_subtle::RefCountedBase::Release()) {
// Prune the code paths which the static analyzer may take to simulate
// object destruction. Use-after-free errors aren't possible given the
// lifetime guarantees of the refcounting system.
ANALYZER_SKIP_THIS_PATH();
Traits::Destruct(static_cast<const T*>(this));
}
}
protected:
~RefCounted() = default;
private:
friend struct DefaultRefCountedTraits<T>;
template <typename U>
static void DeleteInternal(const U* x) {
delete x;
}
};
// Forward declaration.
template <class T, typename Traits>
class RefCountedThreadSafe;
// Default traits for RefCountedThreadSafe<T>. Deletes the object when its ref
// count reaches 0. Overload to delete it on a different thread etc.
template <typename T>
struct DefaultRefCountedThreadSafeTraits {
static void Destruct(const T* x) {
// Delete through RefCountedThreadSafe to make child classes only need to be
// friend with RefCountedThreadSafe instead of this struct, which is an
// implementation detail.
RefCountedThreadSafe<T, DefaultRefCountedThreadSafeTraits>::DeleteInternal(
x);
}
};
//
// A thread-safe variant of RefCounted<T>
//
// class MyFoo : public base::RefCountedThreadSafe<MyFoo> {
// ...
// };
//
// If you're using the default trait, then you should add compile time
// asserts that no one else is deleting your object. i.e.
// private:
// friend class base::RefCountedThreadSafe<MyFoo>;
// ~MyFoo();
//
// We can use REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE() with RefCountedThreadSafe
// too. See the comment above the RefCounted definition for details.
template <class T, typename Traits = DefaultRefCountedThreadSafeTraits<T>>
class RefCountedThreadSafe : public cef_subtle::RefCountedThreadSafeBase {
public:
static constexpr cef_subtle::StartRefCountFromZeroTag kRefCountPreference =
cef_subtle::kStartRefCountFromZeroTag;
explicit RefCountedThreadSafe()
: cef_subtle::RefCountedThreadSafeBase(T::kRefCountPreference) {}
RefCountedThreadSafe(const RefCountedThreadSafe&) = delete;
RefCountedThreadSafe& operator=(const RefCountedThreadSafe&) = delete;
void AddRef() const { AddRefImpl(T::kRefCountPreference); }
void Release() const {
if (cef_subtle::RefCountedThreadSafeBase::Release()) {
ANALYZER_SKIP_THIS_PATH();
Traits::Destruct(static_cast<const T*>(this));
}
}
protected:
~RefCountedThreadSafe() = default;
private:
friend struct DefaultRefCountedThreadSafeTraits<T>;
template <typename U>
static void DeleteInternal(const U* x) {
delete x;
}
void AddRefImpl(cef_subtle::StartRefCountFromZeroTag) const {
cef_subtle::RefCountedThreadSafeBase::AddRef();
}
void AddRefImpl(cef_subtle::StartRefCountFromOneTag) const {
cef_subtle::RefCountedThreadSafeBase::AddRefWithCheck();
}
};
//
// A thread-safe wrapper for some piece of data so we can place other
// things in scoped_refptrs<>.
//
template <typename T>
class RefCountedData
: public base::RefCountedThreadSafe<base::RefCountedData<T>> {
public:
RefCountedData() : data() {}
RefCountedData(const T& in_value) : data(in_value) {}
RefCountedData(T&& in_value) : data(std::move(in_value)) {}
template <typename... Args>
explicit RefCountedData(in_place_t, Args&&... args)
: data(std::forward<Args>(args)...) {}
T data;
private:
friend class base::RefCountedThreadSafe<base::RefCountedData<T>>;
~RefCountedData() = default;
};
template <typename T>
bool operator==(const RefCountedData<T>& lhs, const RefCountedData<T>& rhs) {
return lhs.data == rhs.data;
}
template <typename T>
bool operator!=(const RefCountedData<T>& lhs, const RefCountedData<T>& rhs) {
return !(lhs == rhs);
}
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_REF_COUNTED_H_

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// Copyright (c) 2017 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_CEF_SCOPED_REFPTR_H_
#define CEF_INCLUDE_BASE_CEF_SCOPED_REFPTR_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/memory/scoped_refptr.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <stddef.h>
#include <iosfwd>
#include <type_traits>
#include <utility>
#include "include/base/cef_compiler_specific.h"
#include "include/base/cef_logging.h"
template <class T>
class scoped_refptr;
namespace base {
template <class, typename>
class RefCounted;
template <class, typename>
class RefCountedThreadSafe;
class SequencedTaskRunner;
class WrappedPromise;
template <typename T>
scoped_refptr<T> AdoptRef(T* t);
namespace internal {
class BasePromise;
} // namespace internal
namespace cef_subtle {
enum AdoptRefTag { kAdoptRefTag };
enum StartRefCountFromZeroTag { kStartRefCountFromZeroTag };
enum StartRefCountFromOneTag { kStartRefCountFromOneTag };
template <typename T, typename U, typename V>
constexpr bool IsRefCountPreferenceOverridden(const T*,
const RefCounted<U, V>*) {
return !std::is_same<std::decay_t<decltype(T::kRefCountPreference)>,
std::decay_t<decltype(U::kRefCountPreference)>>::value;
}
template <typename T, typename U, typename V>
constexpr bool IsRefCountPreferenceOverridden(
const T*,
const RefCountedThreadSafe<U, V>*) {
return !std::is_same<std::decay_t<decltype(T::kRefCountPreference)>,
std::decay_t<decltype(U::kRefCountPreference)>>::value;
}
constexpr bool IsRefCountPreferenceOverridden(...) {
return false;
}
} // namespace cef_subtle
// Creates a scoped_refptr from a raw pointer without incrementing the reference
// count. Use this only for a newly created object whose reference count starts
// from 1 instead of 0.
template <typename T>
scoped_refptr<T> AdoptRef(T* obj) {
using Tag = std::decay_t<decltype(T::kRefCountPreference)>;
static_assert(std::is_same<cef_subtle::StartRefCountFromOneTag, Tag>::value,
"Use AdoptRef only if the reference count starts from one.");
DCHECK(obj);
DCHECK(obj->HasOneRef());
obj->Adopted();
return scoped_refptr<T>(obj, cef_subtle::kAdoptRefTag);
}
namespace cef_subtle {
template <typename T>
scoped_refptr<T> AdoptRefIfNeeded(T* obj, StartRefCountFromZeroTag) {
return scoped_refptr<T>(obj);
}
template <typename T>
scoped_refptr<T> AdoptRefIfNeeded(T* obj, StartRefCountFromOneTag) {
return AdoptRef(obj);
}
} // namespace cef_subtle
// Constructs an instance of T, which is a ref counted type, and wraps the
// object into a scoped_refptr<T>.
template <typename T, typename... Args>
scoped_refptr<T> MakeRefCounted(Args&&... args) {
T* obj = new T(std::forward<Args>(args)...);
return cef_subtle::AdoptRefIfNeeded(obj, T::kRefCountPreference);
}
// Takes an instance of T, which is a ref counted type, and wraps the object
// into a scoped_refptr<T>.
template <typename T>
scoped_refptr<T> WrapRefCounted(T* t) {
return scoped_refptr<T>(t);
}
} // namespace base
//
// A smart pointer class for reference counted objects. Use this class instead
// of calling AddRef and Release manually on a reference counted object to
// avoid common memory leaks caused by forgetting to Release an object
// reference. Sample usage:
//
// class MyFoo : public RefCounted<MyFoo> {
// ...
// private:
// friend class RefCounted<MyFoo>; // Allow destruction by RefCounted<>.
// ~MyFoo(); // Destructor must be private/protected.
// };
//
// void some_function() {
// scoped_refptr<MyFoo> foo = MakeRefCounted<MyFoo>();
// foo->Method(param);
// // |foo| is released when this function returns
// }
//
// void some_other_function() {
// scoped_refptr<MyFoo> foo = MakeRefCounted<MyFoo>();
// ...
// foo.reset(); // explicitly releases |foo|
// ...
// if (foo)
// foo->Method(param);
// }
//
// The above examples show how scoped_refptr<T> acts like a pointer to T.
// Given two scoped_refptr<T> classes, it is also possible to exchange
// references between the two objects, like so:
//
// {
// scoped_refptr<MyFoo> a = MakeRefCounted<MyFoo>();
// scoped_refptr<MyFoo> b;
//
// b.swap(a);
// // now, |b| references the MyFoo object, and |a| references nullptr.
// }
//
// To make both |a| and |b| in the above example reference the same MyFoo
// object, simply use the assignment operator:
//
// {
// scoped_refptr<MyFoo> a = MakeRefCounted<MyFoo>();
// scoped_refptr<MyFoo> b;
//
// b = a;
// // now, |a| and |b| each own a reference to the same MyFoo object.
// }
//
// Also see Chromium's ownership and calling conventions:
// https://chromium.googlesource.com/chromium/src/+/lkgr/styleguide/c++/c++.md#object-ownership-and-calling-conventions
// Specifically:
// If the function (at least sometimes) takes a ref on a refcounted object,
// declare the param as scoped_refptr<T>. The caller can decide whether it
// wishes to transfer ownership (by calling std::move(t) when passing t) or
// retain its ref (by simply passing t directly).
// In other words, use scoped_refptr like you would a std::unique_ptr except
// in the odd case where it's required to hold on to a ref while handing one
// to another component (if a component merely needs to use t on the stack
// without keeping a ref: pass t as a raw T*).
template <class T>
class TRIVIAL_ABI scoped_refptr {
public:
typedef T element_type;
constexpr scoped_refptr() = default;
// Allow implicit construction from nullptr.
constexpr scoped_refptr(std::nullptr_t) {}
// Constructs from a raw pointer. Note that this constructor allows implicit
// conversion from T* to scoped_refptr<T> which is strongly discouraged. If
// you are creating a new ref-counted object please use
// base::MakeRefCounted<T>() or base::WrapRefCounted<T>(). Otherwise you
// should move or copy construct from an existing scoped_refptr<T> to the
// ref-counted object.
scoped_refptr(T* p) : ptr_(p) {
if (ptr_)
AddRef(ptr_);
}
// Copy constructor. This is required in addition to the copy conversion
// constructor below.
scoped_refptr(const scoped_refptr& r) : scoped_refptr(r.ptr_) {}
// Copy conversion constructor.
template <typename U,
typename = typename std::enable_if<
std::is_convertible<U*, T*>::value>::type>
scoped_refptr(const scoped_refptr<U>& r) : scoped_refptr(r.ptr_) {}
// Move constructor. This is required in addition to the move conversion
// constructor below.
scoped_refptr(scoped_refptr&& r) noexcept : ptr_(r.ptr_) { r.ptr_ = nullptr; }
// Move conversion constructor.
template <typename U,
typename = typename std::enable_if<
std::is_convertible<U*, T*>::value>::type>
scoped_refptr(scoped_refptr<U>&& r) noexcept : ptr_(r.ptr_) {
r.ptr_ = nullptr;
}
~scoped_refptr() {
static_assert(!base::cef_subtle::IsRefCountPreferenceOverridden(
static_cast<T*>(nullptr), static_cast<T*>(nullptr)),
"It's unsafe to override the ref count preference."
" Please remove REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE"
" from subclasses.");
if (ptr_)
Release(ptr_);
}
T* get() const { return ptr_; }
T& operator*() const {
DCHECK(ptr_);
return *ptr_;
}
T* operator->() const {
DCHECK(ptr_);
return ptr_;
}
scoped_refptr& operator=(std::nullptr_t) {
reset();
return *this;
}
scoped_refptr& operator=(T* p) { return *this = scoped_refptr(p); }
// Unified assignment operator.
scoped_refptr& operator=(scoped_refptr r) noexcept {
swap(r);
return *this;
}
// Sets managed object to null and releases reference to the previous managed
// object, if it existed.
void reset() { scoped_refptr().swap(*this); }
// Returns the owned pointer (if any), releasing ownership to the caller. The
// caller is responsible for managing the lifetime of the reference.
T* release() WARN_UNUSED_RESULT;
void swap(scoped_refptr& r) noexcept { std::swap(ptr_, r.ptr_); }
explicit operator bool() const { return ptr_ != nullptr; }
template <typename U>
bool operator==(const scoped_refptr<U>& rhs) const {
return ptr_ == rhs.get();
}
template <typename U>
bool operator!=(const scoped_refptr<U>& rhs) const {
return !operator==(rhs);
}
template <typename U>
bool operator<(const scoped_refptr<U>& rhs) const {
return ptr_ < rhs.get();
}
protected:
T* ptr_ = nullptr;
private:
template <typename U>
friend scoped_refptr<U> base::AdoptRef(U*);
friend class ::base::SequencedTaskRunner;
// Friend access so these classes can use the constructor below as part of a
// binary size optimization.
friend class ::base::internal::BasePromise;
friend class ::base::WrappedPromise;
scoped_refptr(T* p, base::cef_subtle::AdoptRefTag) : ptr_(p) {}
// Friend required for move constructors that set r.ptr_ to null.
template <typename U>
friend class scoped_refptr;
// Non-inline helpers to allow:
// class Opaque;
// extern template class scoped_refptr<Opaque>;
// Otherwise the compiler will complain that Opaque is an incomplete type.
static void AddRef(T* ptr);
static void Release(T* ptr);
};
template <typename T>
T* scoped_refptr<T>::release() {
T* ptr = ptr_;
ptr_ = nullptr;
return ptr;
}
// static
template <typename T>
void scoped_refptr<T>::AddRef(T* ptr) {
ptr->AddRef();
}
// static
template <typename T>
void scoped_refptr<T>::Release(T* ptr) {
ptr->Release();
}
template <typename T, typename U>
bool operator==(const scoped_refptr<T>& lhs, const U* rhs) {
return lhs.get() == rhs;
}
template <typename T, typename U>
bool operator==(const T* lhs, const scoped_refptr<U>& rhs) {
return lhs == rhs.get();
}
template <typename T>
bool operator==(const scoped_refptr<T>& lhs, std::nullptr_t null) {
return !static_cast<bool>(lhs);
}
template <typename T>
bool operator==(std::nullptr_t null, const scoped_refptr<T>& rhs) {
return !static_cast<bool>(rhs);
}
template <typename T, typename U>
bool operator!=(const scoped_refptr<T>& lhs, const U* rhs) {
return !operator==(lhs, rhs);
}
template <typename T, typename U>
bool operator!=(const T* lhs, const scoped_refptr<U>& rhs) {
return !operator==(lhs, rhs);
}
template <typename T>
bool operator!=(const scoped_refptr<T>& lhs, std::nullptr_t null) {
return !operator==(lhs, null);
}
template <typename T>
bool operator!=(std::nullptr_t null, const scoped_refptr<T>& rhs) {
return !operator==(null, rhs);
}
template <typename T>
std::ostream& operator<<(std::ostream& out, const scoped_refptr<T>& p) {
return out << p.get();
}
template <typename T>
void swap(scoped_refptr<T>& lhs, scoped_refptr<T>& rhs) noexcept {
lhs.swap(rhs);
}
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_SCOPED_REFPTR_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_CEF_TEMPLATE_UTIL_H_
#define CEF_INCLUDE_BASE_CEF_TEMPLATE_UTIL_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/template_util.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <stddef.h>
#include <iosfwd>
#include <iterator>
#include <type_traits>
#include <utility>
#include <vector>
#include "include/base/cef_build.h"
// Some versions of libstdc++ have partial support for type_traits, but misses
// a smaller subset while removing some of the older non-standard stuff. Assume
// that all versions below 5.0 fall in this category, along with one 5.0
// experimental release. Test for this by consulting compiler major version,
// the only reliable option available, so theoretically this could fail should
// you attempt to mix an earlier version of libstdc++ with >= GCC5. But
// that's unlikely to work out, especially as GCC5 changed ABI.
#define CR_GLIBCXX_5_0_0 20150123
#if (defined(__GNUC__) && __GNUC__ < 5) || \
(defined(__GLIBCXX__) && __GLIBCXX__ == CR_GLIBCXX_5_0_0)
#define CR_USE_FALLBACKS_FOR_OLD_EXPERIMENTAL_GLIBCXX
#endif
// This hacks around using gcc with libc++ which has some incompatibilies.
// - is_trivially_* doesn't work: https://llvm.org/bugs/show_bug.cgi?id=27538
// TODO(danakj): Remove this when android builders are all using a newer version
// of gcc, or the android ndk is updated to a newer libc++ that works with older
// gcc versions.
#if !defined(__clang__) && defined(_LIBCPP_VERSION)
#define CR_USE_FALLBACKS_FOR_GCC_WITH_LIBCXX
#endif
namespace base {
template <class T> struct is_non_const_reference : std::false_type {};
template <class T> struct is_non_const_reference<T&> : std::true_type {};
template <class T> struct is_non_const_reference<const T&> : std::false_type {};
namespace internal {
// Implementation detail of base::void_t below.
template <typename...>
struct make_void {
using type = void;
};
} // namespace internal
// base::void_t is an implementation of std::void_t from C++17.
//
// We use |base::internal::make_void| as a helper struct to avoid a C++14
// defect:
// http://en.cppreference.com/w/cpp/types/void_t
// http://open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#1558
template <typename... Ts>
using void_t = typename ::base::internal::make_void<Ts...>::type;
namespace internal {
// Uses expression SFINAE to detect whether using operator<< would work.
template <typename T, typename = void>
struct SupportsOstreamOperator : std::false_type {};
template <typename T>
struct SupportsOstreamOperator<T,
decltype(void(std::declval<std::ostream&>()
<< std::declval<T>()))>
: std::true_type {};
template <typename T, typename = void>
struct SupportsToString : std::false_type {};
template <typename T>
struct SupportsToString<T, decltype(void(std::declval<T>().ToString()))>
: std::true_type {};
// Used to detect whether the given type is an iterator. This is normally used
// with std::enable_if to provide disambiguation for functions that take
// templatzed iterators as input.
template <typename T, typename = void>
struct is_iterator : std::false_type {};
template <typename T>
struct is_iterator<T,
void_t<typename std::iterator_traits<T>::iterator_category>>
: std::true_type {};
// Helper to express preferences in an overload set. If more than one overload
// are available for a given set of parameters the overload with the higher
// priority will be chosen.
template <size_t I>
struct priority_tag : priority_tag<I - 1> {};
template <>
struct priority_tag<0> {};
} // namespace internal
// is_trivially_copyable is especially hard to get right.
// - Older versions of libstdc++ will fail to have it like they do for other
// type traits. This has become a subset of the second point, but used to be
// handled independently.
// - An experimental release of gcc includes most of type_traits but misses
// is_trivially_copyable, so we still have to avoid using libstdc++ in this
// case, which is covered by CR_USE_FALLBACKS_FOR_OLD_EXPERIMENTAL_GLIBCXX.
// - When compiling libc++ from before r239653, with a gcc compiler, the
// std::is_trivially_copyable can fail. So we need to work around that by not
// using the one in libc++ in this case. This is covered by the
// CR_USE_FALLBACKS_FOR_GCC_WITH_LIBCXX define, and is discussed in
// https://llvm.org/bugs/show_bug.cgi?id=27538#c1 where they point out that
// in libc++'s commit r239653 this is fixed by libc++ checking for gcc 5.1.
// - In both of the above cases we are using the gcc compiler. When defining
// this ourselves on compiler intrinsics, the __is_trivially_copyable()
// intrinsic is not available on gcc before version 5.1 (see the discussion in
// https://llvm.org/bugs/show_bug.cgi?id=27538#c1 again), so we must check for
// that version.
// - When __is_trivially_copyable() is not available because we are on gcc older
// than 5.1, we need to fall back to something, so we use __has_trivial_copy()
// instead based on what was done one-off in bit_cast() previously.
// TODO(crbug.com/554293): Remove this when all platforms have this in the std
// namespace and it works with gcc as needed.
#if defined(CR_USE_FALLBACKS_FOR_OLD_EXPERIMENTAL_GLIBCXX) || \
defined(CR_USE_FALLBACKS_FOR_GCC_WITH_LIBCXX)
template <typename T>
struct is_trivially_copyable {
// TODO(danakj): Remove this when android builders are all using a newer version
// of gcc, or the android ndk is updated to a newer libc++ that does this for
// us.
#if _GNUC_VER >= 501
static constexpr bool value = __is_trivially_copyable(T);
#else
static constexpr bool value =
__has_trivial_copy(T) && __has_trivial_destructor(T);
#endif
};
#else
template <class T>
using is_trivially_copyable = std::is_trivially_copyable<T>;
#endif
#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ <= 7
// Workaround for g++7 and earlier family.
// Due to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80654, without this
// Optional<std::vector<T>> where T is non-copyable causes a compile error.
// As we know it is not trivially copy constructible, explicitly declare so.
template <typename T>
struct is_trivially_copy_constructible
: std::is_trivially_copy_constructible<T> {};
template <typename... T>
struct is_trivially_copy_constructible<std::vector<T...>> : std::false_type {};
#else
// Otherwise use std::is_trivially_copy_constructible as is.
template <typename T>
using is_trivially_copy_constructible = std::is_trivially_copy_constructible<T>;
#endif
// base::in_place_t is an implementation of std::in_place_t from
// C++17. A tag type used to request in-place construction in template vararg
// constructors.
// Specification:
// https://en.cppreference.com/w/cpp/utility/in_place
struct in_place_t {};
constexpr in_place_t in_place = {};
// base::in_place_type_t is an implementation of std::in_place_type_t from
// C++17. A tag type used for in-place construction when the type to construct
// needs to be specified, such as with base::unique_any, designed to be a
// drop-in replacement.
// Specification:
// http://en.cppreference.com/w/cpp/utility/in_place
template <typename T>
struct in_place_type_t {};
template <typename T>
struct is_in_place_type_t {
static constexpr bool value = false;
};
template <typename... Ts>
struct is_in_place_type_t<in_place_type_t<Ts...>> {
static constexpr bool value = true;
};
// C++14 implementation of C++17's std::bool_constant.
//
// Reference: https://en.cppreference.com/w/cpp/types/integral_constant
// Specification: https://wg21.link/meta.type.synop
template <bool B>
using bool_constant = std::integral_constant<bool, B>;
// C++14 implementation of C++17's std::conjunction.
//
// Reference: https://en.cppreference.com/w/cpp/types/conjunction
// Specification: https://wg21.link/meta.logical#1.itemdecl:1
template <typename...>
struct conjunction : std::true_type {};
template <typename B1>
struct conjunction<B1> : B1 {};
template <typename B1, typename... Bn>
struct conjunction<B1, Bn...>
: std::conditional_t<static_cast<bool>(B1::value), conjunction<Bn...>, B1> {
};
// C++14 implementation of C++17's std::disjunction.
//
// Reference: https://en.cppreference.com/w/cpp/types/disjunction
// Specification: https://wg21.link/meta.logical#itemdecl:2
template <typename...>
struct disjunction : std::false_type {};
template <typename B1>
struct disjunction<B1> : B1 {};
template <typename B1, typename... Bn>
struct disjunction<B1, Bn...>
: std::conditional_t<static_cast<bool>(B1::value), B1, disjunction<Bn...>> {
};
// C++14 implementation of C++17's std::negation.
//
// Reference: https://en.cppreference.com/w/cpp/types/negation
// Specification: https://wg21.link/meta.logical#itemdecl:3
template <typename B>
struct negation : bool_constant<!static_cast<bool>(B::value)> {};
// Implementation of C++17's invoke_result.
//
// This implementation adds references to `Functor` and `Args` to work around
// some quirks of std::result_of. See the #Notes section of [1] for details.
//
// References:
// [1] https://en.cppreference.com/w/cpp/types/result_of
// [2] https://wg21.link/meta.trans.other#lib:invoke_result
#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || __cplusplus >= 201703L)
template <typename Functor, typename... Args>
using invoke_result = std::invoke_result<Functor, Args...>;
#else
template <typename Functor, typename... Args>
using invoke_result = std::result_of<Functor && (Args && ...)>;
#endif
// Implementation of C++17's std::invoke_result_t.
//
// Reference: https://wg21.link/meta.type.synop#lib:invoke_result_t
template <typename Functor, typename... Args>
using invoke_result_t = typename invoke_result<Functor, Args...>::type;
namespace internal {
// Base case, `InvokeResult` does not have a nested type member. This means `F`
// could not be invoked with `Args...` and thus is not invocable.
template <typename InvokeResult, typename R, typename = void>
struct IsInvocableImpl : std::false_type {};
// Happy case, `InvokeResult` does have a nested type member. Now check whether
// `InvokeResult::type` is convertible to `R`. Short circuit in case
// `std::is_void<R>`.
template <typename InvokeResult, typename R>
struct IsInvocableImpl<InvokeResult, R, void_t<typename InvokeResult::type>>
: disjunction<std::is_void<R>,
std::is_convertible<typename InvokeResult::type, R>> {};
} // namespace internal
// Implementation of C++17's std::is_invocable_r.
//
// Returns whether `F` can be invoked with `Args...` and the result is
// convertible to `R`.
//
// Reference: https://wg21.link/meta.rel#lib:is_invocable_r
template <typename R, typename F, typename... Args>
struct is_invocable_r
: internal::IsInvocableImpl<invoke_result<F, Args...>, R> {};
// Implementation of C++17's std::is_invocable.
//
// Returns whether `F` can be invoked with `Args...`.
//
// Reference: https://wg21.link/meta.rel#lib:is_invocable
template <typename F, typename... Args>
struct is_invocable : is_invocable_r<void, F, Args...> {};
namespace internal {
// The indirection with std::is_enum<T> is required, because instantiating
// std::underlying_type_t<T> when T is not an enum is UB prior to C++20.
template <typename T, bool = std::is_enum<T>::value>
struct IsScopedEnumImpl : std::false_type {};
template <typename T>
struct IsScopedEnumImpl<T, /*std::is_enum<T>::value=*/true>
: negation<std::is_convertible<T, std::underlying_type_t<T>>> {};
} // namespace internal
// Implementation of C++23's std::is_scoped_enum
//
// Reference: https://en.cppreference.com/w/cpp/types/is_scoped_enum
template <typename T>
struct is_scoped_enum : internal::IsScopedEnumImpl<T> {};
// Implementation of C++20's std::remove_cvref.
//
// References:
// - https://en.cppreference.com/w/cpp/types/remove_cvref
// - https://wg21.link/meta.trans.other#lib:remove_cvref
template <typename T>
struct remove_cvref {
using type = std::remove_cv_t<std::remove_reference_t<T>>;
};
// Implementation of C++20's std::remove_cvref_t.
//
// References:
// - https://en.cppreference.com/w/cpp/types/remove_cvref
// - https://wg21.link/meta.type.synop#lib:remove_cvref_t
template <typename T>
using remove_cvref_t = typename remove_cvref<T>::type;
// Simplified implementation of C++20's std::iter_value_t.
// As opposed to std::iter_value_t, this implementation does not restrict
// the type of `Iter` and does not consider specializations of
// `indirectly_readable_traits`.
//
// Reference: https://wg21.link/readable.traits#2
template <typename Iter>
using iter_value_t =
typename std::iterator_traits<remove_cvref_t<Iter>>::value_type;
// Simplified implementation of C++20's std::iter_reference_t.
// As opposed to std::iter_reference_t, this implementation does not restrict
// the type of `Iter`.
//
// Reference: https://wg21.link/iterator.synopsis#:~:text=iter_reference_t
template <typename Iter>
using iter_reference_t = decltype(*std::declval<Iter&>());
// Simplified implementation of C++20's std::indirect_result_t. As opposed to
// std::indirect_result_t, this implementation does not restrict the type of
// `Func` and `Iters`.
//
// Reference: https://wg21.link/iterator.synopsis#:~:text=indirect_result_t
template <typename Func, typename... Iters>
using indirect_result_t = invoke_result_t<Func, iter_reference_t<Iters>...>;
// Simplified implementation of C++20's std::projected. As opposed to
// std::projected, this implementation does not explicitly restrict the type of
// `Iter` and `Proj`, but rather does so implicitly by requiring
// `indirect_result_t<Proj, Iter>` is a valid type. This is required for SFINAE
// friendliness.
//
// Reference: https://wg21.link/projected
template <typename Iter,
typename Proj,
typename IndirectResultT = indirect_result_t<Proj, Iter>>
struct projected {
using value_type = remove_cvref_t<IndirectResultT>;
IndirectResultT operator*() const; // not defined
};
} // namespace base
#undef CR_USE_FALLBACKS_FOR_GCC_WITH_LIBCXX
#undef CR_USE_FALLBACKS_FOR_OLD_EXPERIMENTAL_GLIBCXX
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_TEMPLATE_UTIL_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CEF_INCLUDE_BASE_THREAD_CHECKER_H_
#define CEF_INCLUDE_BASE_THREAD_CHECKER_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/threading/thread_checker.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include "include/base/cef_logging.h"
#include "include/base/internal/cef_thread_checker_impl.h"
// Apart from debug builds, we also enable the thread checker in
// builds with DCHECK_ALWAYS_ON so that trybots and waterfall bots
// with this define will get the same level of thread checking as
// debug bots.
#if DCHECK_IS_ON()
#define ENABLE_THREAD_CHECKER 1
#else
#define ENABLE_THREAD_CHECKER 0
#endif
namespace base {
namespace cef_internal {
// Do nothing implementation, for use in release mode.
//
// Note: You should almost always use the ThreadChecker class to get the
// right version for your build configuration.
class ThreadCheckerDoNothing {
public:
bool CalledOnValidThread() const { return true; }
void DetachFromThread() {}
};
} // namespace cef_internal
// ThreadChecker is a helper class used to help verify that some methods of a
// class are called from the same thread. It provides identical functionality to
// base::NonThreadSafe, but it is meant to be held as a member variable, rather
// than inherited from base::NonThreadSafe.
//
// While inheriting from base::NonThreadSafe may give a clear indication about
// the thread-safety of a class, it may also lead to violations of the style
// guide with regard to multiple inheritance. The choice between having a
// ThreadChecker member and inheriting from base::NonThreadSafe should be based
// on whether:
// - Derived classes need to know the thread they belong to, as opposed to
// having that functionality fully encapsulated in the base class.
// - Derived classes should be able to reassign the base class to another
// thread, via DetachFromThread.
//
// If neither of these are true, then having a ThreadChecker member and calling
// CalledOnValidThread is the preferable solution.
//
// Example:
// class MyClass {
// public:
// void Foo() {
// DCHECK(thread_checker_.CalledOnValidThread());
// ... (do stuff) ...
// }
//
// private:
// ThreadChecker thread_checker_;
// }
//
// In Release mode, CalledOnValidThread will always return true.
#if ENABLE_THREAD_CHECKER
class ThreadChecker : public cef_internal::ThreadCheckerImpl {};
#else
class ThreadChecker : public cef_internal::ThreadCheckerDoNothing {};
#endif // ENABLE_THREAD_CHECKER
#undef ENABLE_THREAD_CHECKER
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_THREAD_CHECKER_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
///
// Trace events are for tracking application performance and resource usage.
// Macros are provided to track:
// Begin and end of function calls
// Counters
//
// Events are issued against categories. Whereas LOG's categories are statically
// defined, TRACE categories are created implicitly with a string. For example:
// TRACE_EVENT_INSTANT0("MY_SUBSYSTEM", "SomeImportantEvent")
//
// Events can be INSTANT, or can be pairs of BEGIN and END in the same scope:
// TRACE_EVENT_BEGIN0("MY_SUBSYSTEM", "SomethingCostly")
// doSomethingCostly()
// TRACE_EVENT_END0("MY_SUBSYSTEM", "SomethingCostly")
// Note: Our tools can't always determine the correct BEGIN/END pairs unless
// these are used in the same scope. Use ASYNC_BEGIN/ASYNC_END macros if you
// need them to be in separate scopes.
//
// A common use case is to trace entire function scopes. This issues a trace
// BEGIN and END automatically:
// void doSomethingCostly() {
// TRACE_EVENT0("MY_SUBSYSTEM", "doSomethingCostly");
// ...
// }
//
// Additional parameters can be associated with an event:
// void doSomethingCostly2(int howMuch) {
// TRACE_EVENT1("MY_SUBSYSTEM", "doSomethingCostly",
// "howMuch", howMuch);
// ...
// }
//
// The trace system will automatically add to this information the current
// process id, thread id, and a timestamp in microseconds.
//
// To trace an asynchronous procedure such as an IPC send/receive, use
// ASYNC_BEGIN and ASYNC_END:
// [single threaded sender code]
// static int send_count = 0;
// ++send_count;
// TRACE_EVENT_ASYNC_BEGIN0("ipc", "message", send_count);
// Send(new MyMessage(send_count));
// [receive code]
// void OnMyMessage(send_count) {
// TRACE_EVENT_ASYNC_END0("ipc", "message", send_count);
// }
// The third parameter is a unique ID to match ASYNC_BEGIN/ASYNC_END pairs.
// ASYNC_BEGIN and ASYNC_END can occur on any thread of any traced process.
// Pointers can be used for the ID parameter, and they will be mangled
// internally so that the same pointer on two different processes will not
// match. For example:
// class MyTracedClass {
// public:
// MyTracedClass() {
// TRACE_EVENT_ASYNC_BEGIN0("category", "MyTracedClass", this);
// }
// ~MyTracedClass() {
// TRACE_EVENT_ASYNC_END0("category", "MyTracedClass", this);
// }
// }
//
// The trace event also supports counters, which is a way to track a quantity
// as it varies over time. Counters are created with the following macro:
// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter", g_myCounterValue);
//
// Counters are process-specific. The macro itself can be issued from any
// thread, however.
//
// Sometimes, you want to track two counters at once. You can do this with two
// counter macros:
// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter0", g_myCounterValue[0]);
// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter1", g_myCounterValue[1]);
// Or you can do it with a combined macro:
// TRACE_COUNTER2("MY_SUBSYSTEM", "myCounter",
// "bytesPinned", g_myCounterValue[0],
// "bytesAllocated", g_myCounterValue[1]);
// This indicates to the tracing UI that these counters should be displayed
// in a single graph, as a summed area chart.
//
// Since counters are in a global namespace, you may want to disembiguate with a
// unique ID, by using the TRACE_COUNTER_ID* variations.
//
// By default, trace collection is compiled in, but turned off at runtime.
// Collecting trace data is the responsibility of the embedding application. In
// CEF's case, calling BeginTracing will turn on tracing on all active
// processes.
//
//
// Memory scoping note:
// Tracing copies the pointers, not the string content, of the strings passed
// in for category, name, and arg_names. Thus, the following code will cause
// problems:
// char* str = strdup("impprtantName");
// TRACE_EVENT_INSTANT0("SUBSYSTEM", str); // BAD!
// free(str); // Trace system now has dangling pointer
//
// To avoid this issue with the |name| and |arg_name| parameters, use the
// TRACE_EVENT_COPY_XXX overloads of the macros at additional runtime
// overhead.
// Notes: The category must always be in a long-lived char* (i.e. static const).
// The |arg_values|, when used, are always deep copied with the _COPY
// macros.
//
//
// Thread Safety:
// All macros are thread safe and can be used from any process.
///
#ifndef CEF_INCLUDE_BASE_CEF_TRACE_EVENT_H_
#define CEF_INCLUDE_BASE_CEF_TRACE_EVENT_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/trace_event/trace_event.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include "include/internal/cef_trace_event_internal.h"
// Records a pair of begin and end events called "name" for the current
// scope, with 0, 1 or 2 associated arguments. If the category is not
// enabled, then this does nothing.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
#define TRACE_EVENT0(category, name) \
cef_trace_event_begin(category, name, NULL, 0, NULL, 0, false); \
CEF_INTERNAL_TRACE_END_ON_SCOPE_CLOSE(category, name)
#define TRACE_EVENT1(category, name, arg1_name, arg1_val) \
cef_trace_event_begin(category, name, arg1_name, arg1_val, NULL, 0, false); \
CEF_INTERNAL_TRACE_END_ON_SCOPE_CLOSE(category, name)
#define TRACE_EVENT2(category, name, arg1_name, arg1_val, arg2_name, arg2_val) \
cef_trace_event_begin(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val, false); \
CEF_INTERNAL_TRACE_END_ON_SCOPE_CLOSE(category, name)
// Implementation detail: trace event macros create temporary variable names.
// These macros give each temporary variable a unique name based on the line
// number to prevent name collisions.
#define CEF_INTERNAL_TRACE_EVENT_UID3(a, b) cef_trace_event_unique_##a##b
#define CEF_INTERNAL_TRACE_EVENT_UID2(a, b) CEF_INTERNAL_TRACE_EVENT_UID3(a, b)
#define CEF_INTERNAL_TRACE_EVENT_UID(name_prefix) \
CEF_INTERNAL_TRACE_EVENT_UID2(name_prefix, __LINE__)
// Implementation detail: internal macro to end end event when the scope ends.
#define CEF_INTERNAL_TRACE_END_ON_SCOPE_CLOSE(category, name) \
cef_trace_event::CefTraceEndOnScopeClose CEF_INTERNAL_TRACE_EVENT_UID( \
profileScope)(category, name)
// Records a single event called "name" immediately, with 0, 1 or 2
// associated arguments. If the category is not enabled, then this
// does nothing.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
#define TRACE_EVENT_INSTANT0(category, name) \
cef_trace_event_instant(category, name, NULL, 0, NULL, 0, false)
#define TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) \
cef_trace_event_instant(category, name, arg1_name, arg1_val, NULL, 0, false)
#define TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val) \
cef_trace_event_instant(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val, false)
#define TRACE_EVENT_COPY_INSTANT0(category, name) \
cef_trace_event_instant(category, name, NULL, 0, NULL, 0, true)
#define TRACE_EVENT_COPY_INSTANT1(category, name, arg1_name, arg1_val) \
cef_trace_event_instant(category, name, arg1_name, arg1_val, NULL, 0, true)
#define TRACE_EVENT_COPY_INSTANT2(category, name, arg1_name, arg1_val, \
arg2_name, arg2_val) \
cef_trace_event_instant(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val, true)
// Records a single BEGIN event called "name" immediately, with 0, 1 or 2
// associated arguments. If the category is not enabled, then this
// does nothing.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
#define TRACE_EVENT_BEGIN0(category, name) \
cef_trace_event_begin(category, name, NULL, 0, NULL, 0, false)
#define TRACE_EVENT_BEGIN1(category, name, arg1_name, arg1_val) \
cef_trace_event_begin(category, name, arg1_name, arg1_val, NULL, 0, false)
#define TRACE_EVENT_BEGIN2(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val) \
cef_trace_event_begin(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val, false)
#define TRACE_EVENT_COPY_BEGIN0(category, name) \
cef_trace_event_begin(category, name, NULL, 0, NULL, 0, true)
#define TRACE_EVENT_COPY_BEGIN1(category, name, arg1_name, arg1_val) \
cef_trace_event_begin(category, name, arg1_name, arg1_val, NULL, 0, true)
#define TRACE_EVENT_COPY_BEGIN2(category, name, arg1_name, arg1_val, \
arg2_name, arg2_val) \
cef_trace_event_begin(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val, true)
// Records a single END event for "name" immediately. If the category
// is not enabled, then this does nothing.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
#define TRACE_EVENT_END0(category, name) \
cef_trace_event_end(category, name, NULL, 0, NULL, 0, false)
#define TRACE_EVENT_END1(category, name, arg1_name, arg1_val) \
cef_trace_event_end(category, name, arg1_name, arg1_val, NULL, 0, false)
#define TRACE_EVENT_END2(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val) \
cef_trace_event_end(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val, false)
#define TRACE_EVENT_COPY_END0(category, name) \
cef_trace_event_end(category, name, NULL, 0, NULL, 0, true)
#define TRACE_EVENT_COPY_END1(category, name, arg1_name, arg1_val) \
cef_trace_event_end(category, name, arg1_name, arg1_val, NULL, 0, true)
#define TRACE_EVENT_COPY_END2(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val) \
cef_trace_event_end(category, name, arg1_name, arg1_val, arg2_name, \
arg2_val, true)
// Records the value of a counter called "name" immediately. Value
// must be representable as a 32 bit integer.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
#define TRACE_COUNTER1(category, name, value) \
cef_trace_counter(category, name, NULL, value, NULL, 0, false)
#define TRACE_COPY_COUNTER1(category, name, value) \
cef_trace_counter(category, name, NULL, value, NULL, 0, true)
// Records the values of a multi-parted counter called "name" immediately.
// The UI will treat value1 and value2 as parts of a whole, displaying their
// values as a stacked-bar chart.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
#define TRACE_COUNTER2(category, name, value1_name, value1_val, value2_name, \
value2_val) \
cef_trace_counter(category, name, value1_name, value1_val, value2_name, \
value2_val, false)
#define TRACE_COPY_COUNTER2(category, name, value1_name, value1_val, \
value2_name, value2_val) \
cef_trace_counter(category, name, value1_name, value1_val, value2_name, \
value2_val, true)
// Records the value of a counter called "name" immediately. Value
// must be representable as a 32 bit integer.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
// - |id| is used to disambiguate counters with the same name. It must either
// be a pointer or an integer value up to 64 bits. If it's a pointer, the
// bits will be xored with a hash of the process ID so that the same pointer
// on two different processes will not collide.
#define TRACE_COUNTER_ID1(category, name, id, value) \
cef_trace_counter_id(category, name, id, NULL, value, NULL, 0, false)
#define TRACE_COPY_COUNTER_ID1(category, name, id, value) \
cef_trace_counter_id(category, name, id, NULL, value, NULL, 0, true)
// Records the values of a multi-parted counter called "name" immediately.
// The UI will treat value1 and value2 as parts of a whole, displaying their
// values as a stacked-bar chart.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
// - |id| is used to disambiguate counters with the same name. It must either
// be a pointer or an integer value up to 64 bits. If it's a pointer, the
// bits will be xored with a hash of the process ID so that the same pointer
// on two different processes will not collide.
#define TRACE_COUNTER_ID2(category, name, id, value1_name, value1_val, \
value2_name, value2_val) \
cef_trace_counter_id(category, name, id, value1_name, value1_val, \
value2_name, value2_val, false)
#define TRACE_COPY_COUNTER_ID2(category, name, id, value1_name, value1_val, \
value2_name, value2_val) \
cef_trace_counter_id(category, name, id, value1_name, value1_val, \
value2_name, value2_val, true)
// Records a single ASYNC_BEGIN event called "name" immediately, with 0, 1 or 2
// associated arguments. If the category is not enabled, then this
// does nothing.
// - category and name strings must have application lifetime (statics or
// literals). They may not include " chars.
// - |id| is used to match the ASYNC_BEGIN event with the ASYNC_END event.
// ASYNC events are considered to match if their category, name and id values
// all match. |id| must either be a pointer or an integer value up to 64
// bits. If it's a pointer, the bits will be xored with a hash of the process
// ID sothat the same pointer on two different processes will not collide.
// An asynchronous operation can consist of multiple phases. The first phase is
// defined by the ASYNC_BEGIN calls. Additional phases can be defined using the
// ASYNC_STEP_BEGIN macros. When the operation completes, call ASYNC_END.
// An async operation can span threads and processes, but all events in that
// operation must use the same |name| and |id|. Each event can have its own
// args.
#define TRACE_EVENT_ASYNC_BEGIN0(category, name, id) \
cef_trace_event_async_begin(category, name, id, NULL, 0, NULL, 0, false)
#define TRACE_EVENT_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \
cef_trace_event_async_begin(category, name, id, arg1_name, arg1_val, NULL, \
0, false)
#define TRACE_EVENT_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val) \
cef_trace_event_async_begin(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val, false)
#define TRACE_EVENT_COPY_ASYNC_BEGIN0(category, name, id) \
cef_trace_event_async_begin(category, name, id, NULL, 0, NULL, 0, true)
#define TRACE_EVENT_COPY_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \
cef_trace_event_async_begin(category, name, id, arg1_name, arg1_val, NULL, \
0, true)
#define TRACE_EVENT_COPY_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val) \
cef_trace_event_async_begin(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val, true)
// Records a single ASYNC_STEP_INTO event for |step| immediately. If the
// category is not enabled, then this does nothing. The |name| and |id| must
// match the ASYNC_BEGIN event above. The |step| param identifies this step
// within the async event. This should be called at the beginning of the next
// phase of an asynchronous operation. The ASYNC_BEGIN event must not have any
// ASYNC_STEP_PAST events.
#define TRACE_EVENT_ASYNC_STEP_INTO0(category, name, id, step) \
cef_trace_event_async_step_into(category, name, id, step, NULL, 0, false)
#define TRACE_EVENT_ASYNC_STEP_INTO1(category, name, id, step, arg1_name, \
arg1_val) \
cef_trace_event_async_step_into(category, name, id, step, arg1_name, \
arg1_val, false)
#define TRACE_EVENT_COPY_ASYNC_STEP_INTO0(category, name, id, step) \
cef_trace_event_async_step_into(category, name, id, step, NULL, 0, true)
#define TRACE_EVENT_COPY_ASYNC_STEP_INTO1(category, name, id, step, arg1_name, \
arg1_val) \
cef_trace_event_async_step_into(category, name, id, step, arg1_name, \
arg1_val, true)
// Records a single ASYNC_STEP_PAST event for |step| immediately. If the
// category is not enabled, then this does nothing. The |name| and |id| must
// match the ASYNC_BEGIN event above. The |step| param identifies this step
// within the async event. This should be called at the beginning of the next
// phase of an asynchronous operation. The ASYNC_BEGIN event must not have any
// ASYNC_STEP_INTO events.
#define TRACE_EVENT_ASYNC_STEP_PAST0(category, name, id, step) \
cef_trace_event_async_step_past(category, name, id, step, NULL, 0, false)
#define TRACE_EVENT_ASYNC_STEP_PAST1(category, name, id, step, arg1_name, \
arg1_val) \
cef_trace_event_async_step_past(category, name, id, step, arg1_name, \
arg1_val, false)
#define TRACE_EVENT_COPY_ASYNC_STEP_PAST0(category, name, id, step) \
cef_trace_event_async_step_past(category, name, id, step, NULL, 0, true)
#define TRACE_EVENT_COPY_ASYNC_STEP_PAST1(category, name, id, step, arg1_name, \
arg1_val) \
cef_trace_event_async_step_past(category, name, id, step, arg1_name, \
arg1_val, true)
// Records a single ASYNC_END event for "name" immediately. If the category
// is not enabled, then this does nothing.
#define TRACE_EVENT_ASYNC_END0(category, name, id) \
cef_trace_event_async_end(category, name, id, NULL, 0, NULL, 0, false)
#define TRACE_EVENT_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
cef_trace_event_async_end(category, name, id, arg1_name, arg1_val, NULL, 0, \
false)
#define TRACE_EVENT_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val) \
cef_trace_event_async_end(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val, false)
#define TRACE_EVENT_COPY_ASYNC_END0(category, name, id) \
cef_trace_event_async_end(category, name, id, NULL, 0, NULL, 0, true)
#define TRACE_EVENT_COPY_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
cef_trace_event_async_end(category, name, id, arg1_name, arg1_val, NULL, 0, \
true)
#define TRACE_EVENT_COPY_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val) \
cef_trace_event_async_end(category, name, id, arg1_name, arg1_val, \
arg2_name, arg2_val, true)
namespace cef_trace_event {
// Used by TRACE_EVENTx macro. Do not use directly.
class CefTraceEndOnScopeClose {
public:
CefTraceEndOnScopeClose(const char* category, const char* name)
: category_(category), name_(name) {}
~CefTraceEndOnScopeClose() {
cef_trace_event_end(category_, name_, NULL, 0, NULL, 0, false);
}
private:
const char* category_;
const char* name_;
};
} // cef_trace_event
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_TRACE_EVENT_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Use std::tuple as tuple type. This file contains helper functions for
// working with std::tuples.
// The functions DispatchToMethod and DispatchToFunction take a function pointer
// or instance and method pointer, and unpack a tuple into arguments to the
// call.
//
// Example usage:
// // These two methods of creating a Tuple are identical.
// std::tuple<int, const char*> tuple_a(1, "wee");
// std::tuple<int, const char*> tuple_b = std::make_tuple(1, "wee");
//
// void SomeFunc(int a, const char* b) { }
// DispatchToFunction(&SomeFunc, tuple_a); // SomeFunc(1, "wee")
// DispatchToFunction(
// &SomeFunc, std::make_tuple(10, "foo")); // SomeFunc(10, "foo")
//
// struct { void SomeMeth(int a, int b, int c) { } } foo;
// DispatchToMethod(&foo, &Foo::SomeMeth, std::make_tuple(1, 2, 3));
// // foo->SomeMeth(1, 2, 3);
#ifndef CEF_INCLUDE_BASE_CEF_TUPLE_H_
#define CEF_INCLUDE_BASE_CEF_TUPLE_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/tuple.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <stddef.h>
#include <tuple>
#include <utility>
#include "include/base/cef_build.h"
namespace base {
// Dispatchers ----------------------------------------------------------------
//
// Helper functions that call the given method on an object, with the unpacked
// tuple arguments. Notice that they all have the same number of arguments,
// so you need only write:
// DispatchToMethod(object, &Object::method, args);
// This is very useful for templated dispatchers, since they don't need to know
// what type |args| is.
// Non-Static Dispatchers with no out params.
template <typename ObjT, typename Method, typename Tuple, size_t... Ns>
inline void DispatchToMethodImpl(const ObjT& obj,
Method method,
Tuple&& args,
std::index_sequence<Ns...>) {
(obj->*method)(std::get<Ns>(std::forward<Tuple>(args))...);
}
template <typename ObjT, typename Method, typename Tuple>
inline void DispatchToMethod(const ObjT& obj,
Method method,
Tuple&& args) {
constexpr size_t size = std::tuple_size<std::decay_t<Tuple>>::value;
DispatchToMethodImpl(obj, method, std::forward<Tuple>(args),
std::make_index_sequence<size>());
}
// Static Dispatchers with no out params.
template <typename Function, typename Tuple, size_t... Ns>
inline void DispatchToFunctionImpl(Function function,
Tuple&& args,
std::index_sequence<Ns...>) {
(*function)(std::get<Ns>(std::forward<Tuple>(args))...);
}
template <typename Function, typename Tuple>
inline void DispatchToFunction(Function function, Tuple&& args) {
constexpr size_t size = std::tuple_size<std::decay_t<Tuple>>::value;
DispatchToFunctionImpl(function, std::forward<Tuple>(args),
std::make_index_sequence<size>());
}
// Dispatchers with out parameters.
template <typename ObjT,
typename Method,
typename InTuple,
typename OutTuple,
size_t... InNs,
size_t... OutNs>
inline void DispatchToMethodImpl(const ObjT& obj,
Method method,
InTuple&& in,
OutTuple* out,
std::index_sequence<InNs...>,
std::index_sequence<OutNs...>) {
(obj->*method)(std::get<InNs>(std::forward<InTuple>(in))...,
&std::get<OutNs>(*out)...);
}
template <typename ObjT, typename Method, typename InTuple, typename OutTuple>
inline void DispatchToMethod(const ObjT& obj,
Method method,
InTuple&& in,
OutTuple* out) {
constexpr size_t in_size = std::tuple_size<std::decay_t<InTuple>>::value;
constexpr size_t out_size = std::tuple_size<OutTuple>::value;
DispatchToMethodImpl(obj, method, std::forward<InTuple>(in), out,
std::make_index_sequence<in_size>(),
std::make_index_sequence<out_size>());
}
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_TUPLE_H_

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// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2012
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Weak pointers are pointers to an object that do not affect its lifetime,
// and which may be invalidated (i.e. reset to nullptr) by the object, or its
// owner, at any time, most commonly when the object is about to be deleted.
// Weak pointers are useful when an object needs to be accessed safely by one
// or more objects other than its owner, and those callers can cope with the
// object vanishing and e.g. tasks posted to it being silently dropped.
// Reference-counting such an object would complicate the ownership graph and
// make it harder to reason about the object's lifetime.
// EXAMPLE:
//
// class Controller {
// public:
// void SpawnWorker() { Worker::StartNew(weak_factory_.GetWeakPtr()); }
// void WorkComplete(const Result& result) { ... }
// private:
// // Member variables should appear before the WeakPtrFactory, to ensure
// // that any WeakPtrs to Controller are invalidated before its members
// // variable's destructors are executed, rendering them invalid.
// WeakPtrFactory<Controller> weak_factory_{this};
// };
//
// class Worker {
// public:
// static void StartNew(WeakPtr<Controller> controller) {
// Worker* worker = new Worker(std::move(controller));
// // Kick off asynchronous processing...
// }
// private:
// Worker(WeakPtr<Controller> controller)
// : controller_(std::move(controller)) {}
// void DidCompleteAsynchronousProcessing(const Result& result) {
// if (controller_)
// controller_->WorkComplete(result);
// }
// WeakPtr<Controller> controller_;
// };
//
// With this implementation a caller may use SpawnWorker() to dispatch multiple
// Workers and subsequently delete the Controller, without waiting for all
// Workers to have completed.
// ------------------------- IMPORTANT: Thread-safety -------------------------
// Weak pointers may be passed safely between threads, but must always be
// dereferenced and invalidated on the same ThreaddTaskRunner otherwise
// checking the pointer would be racey.
//
// To ensure correct use, the first time a WeakPtr issued by a WeakPtrFactory
// is dereferenced, the factory and its WeakPtrs become bound to the calling
// thread or current ThreaddWorkerPool token, and cannot be dereferenced or
// invalidated on any other task runner. Bound WeakPtrs can still be handed
// off to other task runners, e.g. to use to post tasks back to object on the
// bound thread.
//
// If all WeakPtr objects are destroyed or invalidated then the factory is
// unbound from the ThreaddTaskRunner/Thread. The WeakPtrFactory may then be
// destroyed, or new WeakPtr objects may be used, from a different thread.
//
// Thus, at least one WeakPtr object must exist and have been dereferenced on
// the correct thread to enforce that other WeakPtr objects will enforce they
// are used on the desired thread.
#ifndef CEF_INCLUDE_BASE_CEF_WEAK_PTR_H_
#define CEF_INCLUDE_BASE_CEF_WEAK_PTR_H_
#pragma once
#if defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/memory/weak_ptr.h"
#else // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.
#include <cstddef>
#include <type_traits>
#include "include/base/cef_atomic_flag.h"
#include "include/base/cef_logging.h"
#include "include/base/cef_ref_counted.h"
#include "include/base/cef_thread_checker.h"
namespace base {
template <typename T>
class SupportsWeakPtr;
template <typename T>
class WeakPtr;
namespace internal {
// These classes are part of the WeakPtr implementation.
// DO NOT USE THESE CLASSES DIRECTLY YOURSELF.
class WeakReference {
public:
// Although Flag is bound to a specific ThreaddTaskRunner, it may be
// deleted from another via base::WeakPtr::~WeakPtr().
class Flag : public RefCountedThreadSafe<Flag> {
public:
Flag();
void Invalidate();
bool IsValid() const;
bool MaybeValid() const;
void DetachFromThread();
private:
friend class base::RefCountedThreadSafe<Flag>;
~Flag();
base::ThreadChecker thread_checker_;
AtomicFlag invalidated_;
};
WeakReference();
explicit WeakReference(const scoped_refptr<Flag>& flag);
~WeakReference();
WeakReference(WeakReference&& other) noexcept;
WeakReference(const WeakReference& other);
WeakReference& operator=(WeakReference&& other) noexcept = default;
WeakReference& operator=(const WeakReference& other) = default;
bool IsValid() const;
bool MaybeValid() const;
private:
scoped_refptr<const Flag> flag_;
};
class WeakReferenceOwner {
public:
WeakReferenceOwner();
~WeakReferenceOwner();
WeakReference GetRef() const;
bool HasRefs() const { return !flag_->HasOneRef(); }
void Invalidate();
private:
scoped_refptr<WeakReference::Flag> flag_;
};
// This class simplifies the implementation of WeakPtr's type conversion
// constructor by avoiding the need for a public accessor for ref_. A
// WeakPtr<T> cannot access the private members of WeakPtr<U>, so this
// base class gives us a way to access ref_ in a protected fashion.
class WeakPtrBase {
public:
WeakPtrBase();
~WeakPtrBase();
WeakPtrBase(const WeakPtrBase& other) = default;
WeakPtrBase(WeakPtrBase&& other) noexcept = default;
WeakPtrBase& operator=(const WeakPtrBase& other) = default;
WeakPtrBase& operator=(WeakPtrBase&& other) noexcept = default;
void reset() {
ref_ = internal::WeakReference();
ptr_ = 0;
}
protected:
WeakPtrBase(const WeakReference& ref, uintptr_t ptr);
WeakReference ref_;
// This pointer is only valid when ref_.is_valid() is true. Otherwise, its
// value is undefined (as opposed to nullptr).
uintptr_t ptr_;
};
// This class provides a common implementation of common functions that would
// otherwise get instantiated separately for each distinct instantiation of
// SupportsWeakPtr<>.
class SupportsWeakPtrBase {
public:
// A safe static downcast of a WeakPtr<Base> to WeakPtr<Derived>. This
// conversion will only compile if there is exists a Base which inherits
// from SupportsWeakPtr<Base>. See base::AsWeakPtr() below for a helper
// function that makes calling this easier.
//
// Precondition: t != nullptr
template <typename Derived>
static WeakPtr<Derived> StaticAsWeakPtr(Derived* t) {
static_assert(
std::is_base_of<internal::SupportsWeakPtrBase, Derived>::value,
"AsWeakPtr argument must inherit from SupportsWeakPtr");
return AsWeakPtrImpl<Derived>(t);
}
private:
// This template function uses type inference to find a Base of Derived
// which is an instance of SupportsWeakPtr<Base>. We can then safely
// static_cast the Base* to a Derived*.
template <typename Derived, typename Base>
static WeakPtr<Derived> AsWeakPtrImpl(SupportsWeakPtr<Base>* t) {
WeakPtr<Base> ptr = t->AsWeakPtr();
return WeakPtr<Derived>(
ptr.ref_, static_cast<Derived*>(reinterpret_cast<Base*>(ptr.ptr_)));
}
};
} // namespace internal
template <typename T>
class WeakPtrFactory;
// The WeakPtr class holds a weak reference to |T*|.
//
// This class is designed to be used like a normal pointer. You should always
// null-test an object of this class before using it or invoking a method that
// may result in the underlying object being destroyed.
//
// EXAMPLE:
//
// class Foo { ... };
// WeakPtr<Foo> foo;
// if (foo)
// foo->method();
//
template <typename T>
class WeakPtr : public internal::WeakPtrBase {
public:
WeakPtr() = default;
WeakPtr(std::nullptr_t) {}
// Allow conversion from U to T provided U "is a" T. Note that this
// is separate from the (implicit) copy and move constructors.
template <typename U>
WeakPtr(const WeakPtr<U>& other) : WeakPtrBase(other) {
// Need to cast from U* to T* to do pointer adjustment in case of multiple
// inheritance. This also enforces the "U is a T" rule.
T* t = reinterpret_cast<U*>(other.ptr_);
ptr_ = reinterpret_cast<uintptr_t>(t);
}
template <typename U>
WeakPtr(WeakPtr<U>&& other) noexcept : WeakPtrBase(std::move(other)) {
// Need to cast from U* to T* to do pointer adjustment in case of multiple
// inheritance. This also enforces the "U is a T" rule.
T* t = reinterpret_cast<U*>(other.ptr_);
ptr_ = reinterpret_cast<uintptr_t>(t);
}
T* get() const {
return ref_.IsValid() ? reinterpret_cast<T*>(ptr_) : nullptr;
}
T& operator*() const {
CHECK(ref_.IsValid());
return *get();
}
T* operator->() const {
CHECK(ref_.IsValid());
return get();
}
// Allow conditionals to test validity, e.g. if (weak_ptr) {...};
explicit operator bool() const { return get() != nullptr; }
// Returns false if the WeakPtr is confirmed to be invalid. This call is safe
// to make from any thread, e.g. to optimize away unnecessary work, but
// operator bool() must always be called, on the correct thread, before
// actually using the pointer.
//
// Warning: as with any object, this call is only thread-safe if the WeakPtr
// instance isn't being re-assigned or reset() racily with this call.
bool MaybeValid() const { return ref_.MaybeValid(); }
// Returns whether the object |this| points to has been invalidated. This can
// be used to distinguish a WeakPtr to a destroyed object from one that has
// been explicitly set to null.
bool WasInvalidated() const { return ptr_ && !ref_.IsValid(); }
private:
friend class internal::SupportsWeakPtrBase;
template <typename U>
friend class WeakPtr;
friend class SupportsWeakPtr<T>;
friend class WeakPtrFactory<T>;
WeakPtr(const internal::WeakReference& ref, T* ptr)
: WeakPtrBase(ref, reinterpret_cast<uintptr_t>(ptr)) {}
};
// Allow callers to compare WeakPtrs against nullptr to test validity.
template <class T>
bool operator!=(const WeakPtr<T>& weak_ptr, std::nullptr_t) {
return !(weak_ptr == nullptr);
}
template <class T>
bool operator!=(std::nullptr_t, const WeakPtr<T>& weak_ptr) {
return weak_ptr != nullptr;
}
template <class T>
bool operator==(const WeakPtr<T>& weak_ptr, std::nullptr_t) {
return weak_ptr.get() == nullptr;
}
template <class T>
bool operator==(std::nullptr_t, const WeakPtr<T>& weak_ptr) {
return weak_ptr == nullptr;
}
namespace internal {
class WeakPtrFactoryBase {
protected:
WeakPtrFactoryBase(uintptr_t ptr);
~WeakPtrFactoryBase();
internal::WeakReferenceOwner weak_reference_owner_;
uintptr_t ptr_;
};
} // namespace internal
// A class may be composed of a WeakPtrFactory and thereby
// control how it exposes weak pointers to itself. This is helpful if you only
// need weak pointers within the implementation of a class. This class is also
// useful when working with primitive types. For example, you could have a
// WeakPtrFactory<bool> that is used to pass around a weak reference to a bool.
template <class T>
class WeakPtrFactory : public internal::WeakPtrFactoryBase {
public:
WeakPtrFactory() = delete;
explicit WeakPtrFactory(T* ptr)
: WeakPtrFactoryBase(reinterpret_cast<uintptr_t>(ptr)) {}
WeakPtrFactory(const WeakPtrFactory&) = delete;
WeakPtrFactory& operator=(const WeakPtrFactory&) = delete;
~WeakPtrFactory() = default;
WeakPtr<T> GetWeakPtr() const {
return WeakPtr<T>(weak_reference_owner_.GetRef(),
reinterpret_cast<T*>(ptr_));
}
// Call this method to invalidate all existing weak pointers.
void InvalidateWeakPtrs() {
DCHECK(ptr_);
weak_reference_owner_.Invalidate();
}
// Call this method to determine if any weak pointers exist.
bool HasWeakPtrs() const {
DCHECK(ptr_);
return weak_reference_owner_.HasRefs();
}
};
// A class may extend from SupportsWeakPtr to let others take weak pointers to
// it. This avoids the class itself implementing boilerplate to dispense weak
// pointers. However, since SupportsWeakPtr's destructor won't invalidate
// weak pointers to the class until after the derived class' members have been
// destroyed, its use can lead to subtle use-after-destroy issues.
template <class T>
class SupportsWeakPtr : public internal::SupportsWeakPtrBase {
public:
SupportsWeakPtr() = default;
SupportsWeakPtr(const SupportsWeakPtr&) = delete;
SupportsWeakPtr& operator=(const SupportsWeakPtr&) = delete;
WeakPtr<T> AsWeakPtr() {
return WeakPtr<T>(weak_reference_owner_.GetRef(), static_cast<T*>(this));
}
protected:
~SupportsWeakPtr() = default;
private:
internal::WeakReferenceOwner weak_reference_owner_;
};
// Helper function that uses type deduction to safely return a WeakPtr<Derived>
// when Derived doesn't directly extend SupportsWeakPtr<Derived>, instead it
// extends a Base that extends SupportsWeakPtr<Base>.
//
// EXAMPLE:
// class Base : public base::SupportsWeakPtr<Producer> {};
// class Derived : public Base {};
//
// Derived derived;
// base::WeakPtr<Derived> ptr = base::AsWeakPtr(&derived);
//
// Note that the following doesn't work (invalid type conversion) since
// Derived::AsWeakPtr() is WeakPtr<Base> SupportsWeakPtr<Base>::AsWeakPtr(),
// and there's no way to safely cast WeakPtr<Base> to WeakPtr<Derived> at
// the caller.
//
// base::WeakPtr<Derived> ptr = derived.AsWeakPtr(); // Fails.
template <typename Derived>
WeakPtr<Derived> AsWeakPtr(Derived* t) {
return internal::SupportsWeakPtrBase::StaticAsWeakPtr<Derived>(t);
}
} // namespace base
#endif // !USING_CHROMIUM_INCLUDES
#endif // CEF_INCLUDE_BASE_CEF_WEAK_PTR_H_

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Files in this directory have been copied from other locations in the Chromium
source tree. They have been modified only to the extent necessary to work in
the CEF Binary Distribution directory structure. Below is a listing of the
original file locations.
../net/base/net_error_list.h

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// Copyright (c) 2012 Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Do not include this header file directly. Use base/cef_bind.h or
// base/cef_callback.h instead.
// This file contains utility functions and classes that help the
// implementation, and management of the Callback objects.
#ifndef CEF_INCLUDE_BASE_INTERNAL_CEF_CALLBACK_INTERNAL_H_
#define CEF_INCLUDE_BASE_INTERNAL_CEF_CALLBACK_INTERNAL_H_
#include "include/base/cef_callback_forward.h"
#include "include/base/cef_ref_counted.h"
namespace base {
struct FakeBindState;
namespace internal {
class BindStateBase;
class FinallyExecutorCommon;
class ThenAndCatchExecutorCommon;
template <typename ReturnType>
class PostTaskExecutor;
template <typename Functor, typename... BoundArgs>
struct BindState;
class CallbackBase;
class CallbackBaseCopyable;
struct BindStateBaseRefCountTraits {
static void Destruct(const BindStateBase*);
};
template <typename T>
using PassingType = std::conditional_t<std::is_scalar<T>::value, T, T&&>;
// BindStateBase is used to provide an opaque handle that the Callback
// class can use to represent a function object with bound arguments. It
// behaves as an existential type that is used by a corresponding
// DoInvoke function to perform the function execution. This allows
// us to shield the Callback class from the types of the bound argument via
// "type erasure."
// At the base level, the only task is to add reference counting data. Avoid
// using or inheriting any virtual functions. Creating a vtable for every
// BindState template instantiation results in a lot of bloat. Its only task is
// to call the destructor which can be done with a function pointer.
class BindStateBase
: public RefCountedThreadSafe<BindStateBase, BindStateBaseRefCountTraits> {
public:
REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE();
enum CancellationQueryMode {
IS_CANCELLED,
MAYBE_VALID,
};
using InvokeFuncStorage = void (*)();
BindStateBase(const BindStateBase&) = delete;
BindStateBase& operator=(const BindStateBase&) = delete;
private:
BindStateBase(InvokeFuncStorage polymorphic_invoke,
void (*destructor)(const BindStateBase*));
BindStateBase(InvokeFuncStorage polymorphic_invoke,
void (*destructor)(const BindStateBase*),
bool (*query_cancellation_traits)(const BindStateBase*,
CancellationQueryMode mode));
~BindStateBase() = default;
friend struct BindStateBaseRefCountTraits;
friend class RefCountedThreadSafe<BindStateBase, BindStateBaseRefCountTraits>;
friend class CallbackBase;
friend class CallbackBaseCopyable;
// Allowlist subclasses that access the destructor of BindStateBase.
template <typename Functor, typename... BoundArgs>
friend struct BindState;
friend struct ::base::FakeBindState;
bool IsCancelled() const {
return query_cancellation_traits_(this, IS_CANCELLED);
}
bool MaybeValid() const {
return query_cancellation_traits_(this, MAYBE_VALID);
}
// In C++, it is safe to cast function pointers to function pointers of
// another type. It is not okay to use void*. We create a InvokeFuncStorage
// that that can store our function pointer, and then cast it back to
// the original type on usage.
InvokeFuncStorage polymorphic_invoke_;
// Pointer to a function that will properly destroy |this|.
void (*destructor_)(const BindStateBase*);
bool (*query_cancellation_traits_)(const BindStateBase*,
CancellationQueryMode mode);
};
// Holds the Callback methods that don't require specialization to reduce
// template bloat.
// CallbackBase<MoveOnly> is a direct base class of MoveOnly callbacks, and
// CallbackBase<Copyable> uses CallbackBase<MoveOnly> for its implementation.
class CallbackBase {
public:
inline CallbackBase(CallbackBase&& c) noexcept;
CallbackBase& operator=(CallbackBase&& c) noexcept;
explicit CallbackBase(const CallbackBaseCopyable& c);
CallbackBase& operator=(const CallbackBaseCopyable& c);
explicit CallbackBase(CallbackBaseCopyable&& c) noexcept;
CallbackBase& operator=(CallbackBaseCopyable&& c) noexcept;
// Returns true if Callback is null (doesn't refer to anything).
bool is_null() const { return !bind_state_; }
explicit operator bool() const { return !is_null(); }
// Returns true if the callback invocation will be nop due to an cancellation.
// It's invalid to call this on uninitialized callback.
//
// Must be called on the Callback's destination sequence.
bool IsCancelled() const;
// If this returns false, the callback invocation will be a nop due to a
// cancellation. This may(!) still return true, even on a cancelled callback.
//
// This function is thread-safe.
bool MaybeValid() const;
// Returns the Callback into an uninitialized state.
void Reset();
protected:
friend class FinallyExecutorCommon;
friend class ThenAndCatchExecutorCommon;
template <typename ReturnType>
friend class PostTaskExecutor;
using InvokeFuncStorage = BindStateBase::InvokeFuncStorage;
// Returns true if this callback equals |other|. |other| may be null.
bool EqualsInternal(const CallbackBase& other) const;
constexpr inline CallbackBase();
// Allow initializing of |bind_state_| via the constructor to avoid default
// initialization of the scoped_refptr.
explicit inline CallbackBase(BindStateBase* bind_state);
InvokeFuncStorage polymorphic_invoke() const {
return bind_state_->polymorphic_invoke_;
}
// Force the destructor to be instantiated inside this translation unit so
// that our subclasses will not get inlined versions. Avoids more template
// bloat.
~CallbackBase();
scoped_refptr<BindStateBase> bind_state_;
};
constexpr CallbackBase::CallbackBase() = default;
CallbackBase::CallbackBase(CallbackBase&&) noexcept = default;
CallbackBase::CallbackBase(BindStateBase* bind_state)
: bind_state_(AdoptRef(bind_state)) {}
// CallbackBase<Copyable> is a direct base class of Copyable Callbacks.
class CallbackBaseCopyable : public CallbackBase {
public:
CallbackBaseCopyable(const CallbackBaseCopyable& c);
CallbackBaseCopyable(CallbackBaseCopyable&& c) noexcept = default;
CallbackBaseCopyable& operator=(const CallbackBaseCopyable& c);
CallbackBaseCopyable& operator=(CallbackBaseCopyable&& c) noexcept;
protected:
constexpr CallbackBaseCopyable() = default;
explicit CallbackBaseCopyable(BindStateBase* bind_state)
: CallbackBase(bind_state) {}
~CallbackBaseCopyable() = default;
};
// Helpers for the `Then()` implementation.
template <typename OriginalCallback, typename ThenCallback>
struct ThenHelper;
// Specialization when original callback returns `void`.
template <template <typename> class OriginalCallback,
template <typename>
class ThenCallback,
typename... OriginalArgs,
typename ThenR,
typename... ThenArgs>
struct ThenHelper<OriginalCallback<void(OriginalArgs...)>,
ThenCallback<ThenR(ThenArgs...)>> {
static_assert(sizeof...(ThenArgs) == 0,
"|then| callback cannot accept parameters if |this| has a "
"void return type.");
static auto CreateTrampoline() {
return [](OriginalCallback<void(OriginalArgs...)> c1,
ThenCallback<ThenR(ThenArgs...)> c2, OriginalArgs... c1_args) {
std::move(c1).Run(std::forward<OriginalArgs>(c1_args)...);
return std::move(c2).Run();
};
}
};
// Specialization when original callback returns a non-void type.
template <template <typename> class OriginalCallback,
template <typename>
class ThenCallback,
typename OriginalR,
typename... OriginalArgs,
typename ThenR,
typename... ThenArgs>
struct ThenHelper<OriginalCallback<OriginalR(OriginalArgs...)>,
ThenCallback<ThenR(ThenArgs...)>> {
static_assert(sizeof...(ThenArgs) == 1,
"|then| callback must accept exactly one parameter if |this| "
"has a non-void return type.");
// TODO(dcheng): This should probably check is_convertible as well (same with
// `AssertBindArgsValidity`).
static_assert(std::is_constructible<ThenArgs..., OriginalR&&>::value,
"|then| callback's parameter must be constructible from "
"return type of |this|.");
static auto CreateTrampoline() {
return [](OriginalCallback<OriginalR(OriginalArgs...)> c1,
ThenCallback<ThenR(ThenArgs...)> c2, OriginalArgs... c1_args) {
return std::move(c2).Run(
std::move(c1).Run(std::forward<OriginalArgs>(c1_args)...));
};
}
};
} // namespace internal
} // namespace base
#endif // CEF_INCLUDE_BASE_INTERNAL_CEF_CALLBACK_INTERNAL_H_

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// Copyright (c) 2011 Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Do not include this header file directly. Use base/cef_lock.h instead.
#ifndef CEF_INCLUDE_BASE_INTERNAL_CEF_LOCK_IMPL_H_
#define CEF_INCLUDE_BASE_INTERNAL_CEF_LOCK_IMPL_H_
#include "include/base/cef_build.h"
#if defined(OS_WIN)
#include <windows.h>
#elif defined(OS_POSIX)
#include <pthread.h>
#endif
namespace base {
namespace cef_internal {
// This class implements the underlying platform-specific spin-lock mechanism
// used for the Lock class. Most users should not use LockImpl directly, but
// should instead use Lock.
class LockImpl {
public:
#if defined(OS_WIN)
typedef CRITICAL_SECTION NativeHandle;
#elif defined(OS_POSIX)
typedef pthread_mutex_t NativeHandle;
#endif
LockImpl();
LockImpl(const LockImpl&) = delete;
LockImpl& operator=(const LockImpl&) = delete;
~LockImpl();
// If the lock is not held, take it and return true. If the lock is already
// held by something else, immediately return false.
bool Try();
// Take the lock, blocking until it is available if necessary.
void Lock();
// Release the lock. This must only be called by the lock's holder: after
// a successful call to Try, or a call to Lock.
void Unlock();
// Return the native underlying lock.
// TODO(awalker): refactor lock and condition variables so that this is
// unnecessary.
NativeHandle* native_handle() { return &native_handle_; }
private:
NativeHandle native_handle_;
};
} // namespace cef_internal
} // namespace base
#endif // CEF_INCLUDE_BASE_INTERNAL_CEF_LOCK_IMPL_H_

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// Copyright (c) 2011 Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Do not include this header file directly. Use base/cef_callback.h instead.
#ifndef CEF_INCLUDE_BASE_INTERNAL_CEF_RAW_SCOPED_REFPTR_MISMATCH_CHECKER_H_
#define CEF_INCLUDE_BASE_INTERNAL_CEF_RAW_SCOPED_REFPTR_MISMATCH_CHECKER_H_
#include <type_traits>
#include "include/base/cef_template_util.h"
// It is dangerous to post a task with a T* argument where T is a subtype of
// RefCounted(Base|ThreadSafeBase), since by the time the parameter is used, the
// object may already have been deleted since it was not held with a
// scoped_refptr. Example: http://crbug.com/27191
// The following set of traits are designed to generate a compile error
// whenever this antipattern is attempted.
namespace base {
// This is a base internal implementation file used by task.h and callback.h.
// Not for public consumption, so we wrap it in namespace internal.
namespace internal {
template <typename T, typename = void>
struct IsRefCountedType : std::false_type {};
template <typename T>
struct IsRefCountedType<T,
void_t<decltype(std::declval<T*>()->AddRef()),
decltype(std::declval<T*>()->Release())>>
: std::true_type {};
// Human readable translation: you needed to be a scoped_refptr if you are a raw
// pointer type and are convertible to a RefCounted(Base|ThreadSafeBase) type.
template <typename T>
struct NeedsScopedRefptrButGetsRawPtr
: conjunction<std::is_pointer<T>,
IsRefCountedType<std::remove_pointer_t<T>>> {
static_assert(!std::is_reference<T>::value,
"NeedsScopedRefptrButGetsRawPtr requires non-reference type.");
};
} // namespace internal
} // namespace base
#endif // CEF_INCLUDE_BASE_INTERNAL_CEF_RAW_SCOPED_REFPTR_MISMATCH_CHECKER_H_

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// Copyright (c) 2012 Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Do not include this header file directly. Use base/memory/scoped_policy.h
// instead.
#ifndef CEF_INCLUDE_BASE_INTERNAL_CEF_SCOPED_POLICY_H_
#define CEF_INCLUDE_BASE_INTERNAL_CEF_SCOPED_POLICY_H_
namespace base {
namespace scoped_policy {
// Defines the ownership policy for a scoped object.
enum OwnershipPolicy {
// The scoped object takes ownership of an object by taking over an existing
// ownership claim.
ASSUME,
// The scoped object will retain the object and any initial ownership is
// not changed.
RETAIN
};
} // namespace scoped_policy
} // namespace base
#endif // CEF_INCLUDE_BASE_INTERNAL_CEF_SCOPED_POLICY_H_

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// Copyright (c) 2011 Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Do not include this header file directly. Use base/cef_thread_checker.h
// instead.
#ifndef CEF_INCLUDE_BASE_INTERNAL_THREAD_CHECKER_IMPL_H_
#define CEF_INCLUDE_BASE_INTERNAL_THREAD_CHECKER_IMPL_H_
#include "include/base/cef_lock.h"
#include "include/base/cef_platform_thread.h"
namespace base {
namespace cef_internal {
// Real implementation of ThreadChecker, for use in debug mode, or
// for temporary use in release mode (e.g. to CHECK on a threading issue
// seen only in the wild).
//
// Note: You should almost always use the ThreadChecker class to get the
// right version for your build configuration.
class ThreadCheckerImpl {
public:
ThreadCheckerImpl();
~ThreadCheckerImpl();
bool CalledOnValidThread() const;
// Changes the thread that is checked for in CalledOnValidThread. This may
// be useful when an object may be created on one thread and then used
// exclusively on another thread.
void DetachFromThread();
private:
void EnsureThreadIdAssigned() const;
mutable base::Lock lock_;
// This is mutable so that CalledOnValidThread can set it.
// It's guarded by |lock_|.
mutable PlatformThreadRef valid_thread_id_;
};
} // namespace cef_internal
} // namespace base
#endif // CEF_INCLUDE_BASE_INTERNAL_THREAD_CHECKER_IMPL_H_

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// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// This file was generated by the CEF translator tool and should not edited
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=306e44d49ab6198a0fa1bcea50e8a25ee18672be$
//
#ifndef CEF_INCLUDE_CAPI_CEF_ACCESSIBILITY_HANDLER_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_ACCESSIBILITY_HANDLER_CAPI_H_
#pragma once
#include "include/capi/cef_values_capi.h"
#ifdef __cplusplus
extern "C" {
#endif
///
// Implement this structure to receive accessibility notification when
// accessibility events have been registered. The functions of this structure
// will be called on the UI thread.
///
typedef struct _cef_accessibility_handler_t {
///
// Base structure.
///
cef_base_ref_counted_t base;
///
// Called after renderer process sends accessibility tree changes to the
// browser process.
///
void(CEF_CALLBACK* on_accessibility_tree_change)(
struct _cef_accessibility_handler_t* self,
struct _cef_value_t* value);
///
// Called after renderer process sends accessibility location changes to the
// browser process.
///
void(CEF_CALLBACK* on_accessibility_location_change)(
struct _cef_accessibility_handler_t* self,
struct _cef_value_t* value);
} cef_accessibility_handler_t;
#ifdef __cplusplus
}
#endif
#endif // CEF_INCLUDE_CAPI_CEF_ACCESSIBILITY_HANDLER_CAPI_H_

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// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// This file was generated by the CEF translator tool and should not edited
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=665709ecf3ebad59e85285d319eae72197b9766f$
//
#ifndef CEF_INCLUDE_CAPI_CEF_APP_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_APP_CAPI_H_
#pragma once
#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_browser_process_handler_capi.h"
#include "include/capi/cef_command_line_capi.h"
#include "include/capi/cef_render_process_handler_capi.h"
#include "include/capi/cef_resource_bundle_handler_capi.h"
#include "include/capi/cef_scheme_capi.h"
#ifdef __cplusplus
extern "C" {
#endif
struct _cef_app_t;
///
// Implement this structure to provide handler implementations. Methods will be
// called by the process and/or thread indicated.
///
typedef struct _cef_app_t {
///
// Base structure.
///
cef_base_ref_counted_t base;
///
// Provides an opportunity to view and/or modify command-line arguments before
// processing by CEF and Chromium. The |process_type| value will be NULL for
// the browser process. Do not keep a reference to the cef_command_line_t
// object passed to this function. The CefSettings.command_line_args_disabled
// value can be used to start with an NULL command-line object. Any values
// specified in CefSettings that equate to command-line arguments will be set
// before this function is called. Be cautious when using this function to
// modify command-line arguments for non-browser processes as this may result
// in undefined behavior including crashes.
///
void(CEF_CALLBACK* on_before_command_line_processing)(
struct _cef_app_t* self,
const cef_string_t* process_type,
struct _cef_command_line_t* command_line);
///
// Provides an opportunity to register custom schemes. Do not keep a reference
// to the |registrar| object. This function is called on the main thread for
// each process and the registered schemes should be the same across all
// processes.
///
void(CEF_CALLBACK* on_register_custom_schemes)(
struct _cef_app_t* self,
struct _cef_scheme_registrar_t* registrar);
///
// Return the handler for resource bundle events. If
// CefSettings.pack_loading_disabled is true (1) a handler must be returned.
// If no handler is returned resources will be loaded from pack files. This
// function is called by the browser and render processes on multiple threads.
///
struct _cef_resource_bundle_handler_t*(
CEF_CALLBACK* get_resource_bundle_handler)(struct _cef_app_t* self);
///
// Return the handler for functionality specific to the browser process. This
// function is called on multiple threads in the browser process.
///
struct _cef_browser_process_handler_t*(
CEF_CALLBACK* get_browser_process_handler)(struct _cef_app_t* self);
///
// Return the handler for functionality specific to the render process. This
// function is called on the render process main thread.
///
struct _cef_render_process_handler_t*(
CEF_CALLBACK* get_render_process_handler)(struct _cef_app_t* self);
} cef_app_t;
///
// This function should be called from the application entry point function to
// execute a secondary process. It can be used to run secondary processes from
// the browser client executable (default behavior) or from a separate
// executable specified by the CefSettings.browser_subprocess_path value. If
// called for the browser process (identified by no "type" command-line value)
// it will return immediately with a value of -1. If called for a recognized
// secondary process it will block until the process should exit and then return
// the process exit code. The |application| parameter may be NULL. The
// |windows_sandbox_info| parameter is only used on Windows and may be NULL (see
// cef_sandbox_win.h for details).
///
CEF_EXPORT int cef_execute_process(const struct _cef_main_args_t* args,
cef_app_t* application,
void* windows_sandbox_info);
///
// This function should be called on the main application thread to initialize
// the CEF browser process. The |application| parameter may be NULL. A return
// value of true (1) indicates that it succeeded and false (0) indicates that it
// failed. The |windows_sandbox_info| parameter is only used on Windows and may
// be NULL (see cef_sandbox_win.h for details).
///
CEF_EXPORT int cef_initialize(const struct _cef_main_args_t* args,
const struct _cef_settings_t* settings,
cef_app_t* application,
void* windows_sandbox_info);
///
// This function should be called on the main application thread to shut down
// the CEF browser process before the application exits.
///
CEF_EXPORT void cef_shutdown(void);
///
// Perform a single iteration of CEF message loop processing. This function is
// provided for cases where the CEF message loop must be integrated into an
// existing application message loop. Use of this function is not recommended
// for most users; use either the cef_run_message_loop() function or
// CefSettings.multi_threaded_message_loop if possible. When using this function
// care must be taken to balance performance against excessive CPU usage. It is
// recommended to enable the CefSettings.external_message_pump option when using
// this function so that
// cef_browser_process_handler_t::on_schedule_message_pump_work() callbacks can
// facilitate the scheduling process. This function should only be called on the
// main application thread and only if cef_initialize() is called with a
// CefSettings.multi_threaded_message_loop value of false (0). This function
// will not block.
///
CEF_EXPORT void cef_do_message_loop_work(void);
///
// Run the CEF message loop. Use this function instead of an application-
// provided message loop to get the best balance between performance and CPU
// usage. This function should only be called on the main application thread and
// only if cef_initialize() is called with a
// CefSettings.multi_threaded_message_loop value of false (0). This function
// will block until a quit message is received by the system.
///
CEF_EXPORT void cef_run_message_loop(void);
///
// Quit the CEF message loop that was started by calling cef_run_message_loop().
// This function should only be called on the main application thread and only
// if cef_run_message_loop() was used.
///
CEF_EXPORT void cef_quit_message_loop(void);
///
// Set to true (1) before calling Windows APIs like TrackPopupMenu that enter a
// modal message loop. Set to false (0) after exiting the modal message loop.
///
CEF_EXPORT void cef_set_osmodal_loop(int osModalLoop);
///
// Call during process startup to enable High-DPI support on Windows 7 or newer.
// Older versions of Windows should be left DPI-unaware because they do not
// support DirectWrite and GDI fonts are kerned very badly.
///
CEF_EXPORT void cef_enable_highdpi_support(void);
#ifdef __cplusplus
}
#endif
#endif // CEF_INCLUDE_CAPI_CEF_APP_CAPI_H_

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