1，
src\third_party\WebKit\Source\core\dom\events\Event.h：
src\third_party\blink\renderer\core\dom\events\event.h
bool isTrusted() const { return is_trusted_; }
void SetTrusted(bool value) { is_trusted_ = value; } 2，屏蔽所有彈出框：
electron/shell/browser/atom_javascript_dialog_manager.cc
line 58：
#if 0
if (dialog_type != JavaScriptDialogType::JAVASCRIPT_DIALOG_TYPE_ALERT &&
dialog_type != JavaScriptDialogType::JAVASCRIPT_DIALOG_TYPE_CONFIRM) {
#else
if(true){
std::move(callback).Run(false, base::string16());
return;
}
#endif 3，禁用
// Don't enforce the same-origin policy. (Used by people testing their sites.) --disable-site-isolation-trials --disable-web-security --disable-features=IsolateOrigins, site-per-proecess
const wchar_t kDisableWebSecurity[] = L"disable-web-security"; 4，開關 switch設定
electron的main
1）D:\dev\electron9\src\electron\shell\app\electron_main.cc
int main(int argc, char* argv[]) {
FixStdioStreams();
#if BUILDFLAG(ENABLE_RUN_AS_NODE)
if (IsEnvSet(electron::kRunAsNode)) {
base::i18n::InitializeICU();
base::AtExitManager atexit_manager;
return electron::NodeMain(argc, argv);
}
#endif
electron::ElectronMainDelegate delegate;
content::ContentMainParams params(&delegate);
params.argc = argc;
params.argv = const_cast<const char**>(argv);
electron::ElectronCommandLine::Init(argc, argv);
return content::ContentMain(params);
} 2）D:\dev\electron9\src\content\app\content_main.cc
int ContentMain(const ContentMainParams& params) {
ContentServiceManagerMainDelegate delegate(params);
service_manager::MainParams main_params(&delegate);
#if !defined(OS_WIN) && !defined(OS_ANDROID)
main_params.argc = params.argc;
main_params.argv = params.argv;
#endif
return service_manager::Main(main_params);
} View Code
在ContentMainParams 中有個重要資料 delegate，将真正的實作轉交到外部。比如chrome在chrome/app/chrome_main_delegate.cc中。而electron在electron/shell/app/electron_main_delegate.cc中。：
// content\public\app\content_main.h
struct ContentMainParams {
explicit ContentMainParams(ContentMainDelegate* delegate)
: delegate(delegate) {}
ContentMainDelegate* delegate;
...... D:\dev\electron9\src\chrome\app\chrome_main_delegate.h
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_PUBLIC_APP_CONTENT_MAIN_DELEGATE_H_
#define CONTENT_PUBLIC_APP_CONTENT_MAIN_DELEGATE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/callback_forward.h"
#include "build/build_config.h"
#include "content/common/content_export.h"
#include "services/service_manager/embedder/process_type.h"
namespace base {
class CommandLine;
}
namespace service_manager {
class BackgroundServiceManager;
class Identity;
class ZygoteForkDelegate;
} // namespace service_manager
namespace content {
class ContentBrowserClient;
class ContentClient;
class ContentGpuClient;
class ContentRendererClient;
class ContentUtilityClient;
struct MainFunctionParams;
class CONTENT_EXPORT ContentMainDelegate {
public:
virtual ~ContentMainDelegate() {}
// Tells the embedder that the absolute basic startup has been done, i.e.
// it's now safe to create singletons and check the command line. Return true
// if the process should exit afterwards, and if so, |exit_code| should be
// set. This is the place for embedder to do the things that must happen at
// the start. Most of its startup code should be in the methods below.
virtual bool BasicStartupComplete(int* exit_code);
// This is where the embedder puts all of its startup code that needs to run
// before the sandbox is engaged.
virtual void PreSandboxStartup() {}
// This is where the embedder can add startup code to run after the sandbox
// has been initialized.
virtual void SandboxInitialized(const std::string& process_type) {}
// Asks the embedder to start a process. Return -1 for the default behavior.
virtual int RunProcess(
const std::string& process_type,
const MainFunctionParams& main_function_params);
// Called right before the process exits.
virtual void ProcessExiting(const std::string& process_type) {}
#if defined(OS_LINUX)
// Tells the embedder that the zygote process is starting, and allows it to
// specify one or more zygote delegates if it wishes by storing them in
// |*delegates|.
virtual void ZygoteStarting(
std::vector<std::unique_ptr<service_manager::ZygoteForkDelegate>>*
delegates);
// Called every time the zygote process forks.
virtual void ZygoteForked() {}
#endif // defined(OS_LINUX)
// Fatal errors during initialization are reported by this function, so that
// the embedder can implement graceful exit by displaying some message and
// returning initialization error code. Default behavior is CHECK(false).
virtual int TerminateForFatalInitializationError();
// Allows the embedder to prevent locking the scheme registry. The scheme
// registry is the list of URL schemes we recognize, with some additional
// information about each scheme such as whether it expects a host. The
// scheme registry is not thread-safe, so by default it is locked before any
// threads are created to ensure single-threaded access. An embedder can
// override this to prevent the scheme registry from being locked during
// startup, but if they do so then they are responsible for making sure that
// the registry is only accessed in a thread-safe way, and for calling
// url::LockSchemeRegistries() when initialization is complete. If possible,
// prefer registering additional schemes through
// ContentClient::AddAdditionalSchemes over preventing the scheme registry
// from being locked.
virtual bool ShouldLockSchemeRegistry();
// Overrides the Service Manager process type to use for the currently running
// process.
virtual service_manager::ProcessType OverrideProcessType();
// Allows the content embedder to adjust arbitrary command line arguments for
// any service process started by the Service Manager.
virtual void AdjustServiceProcessCommandLine(
const service_manager::Identity& identity,
base::CommandLine* command_line);
// Allows the embedder to perform arbitrary initialization within the Service
// Manager process immediately before the Service Manager runs its main loop.
//
// |quit_closure| is a callback the embedder may retain and invoke at any time
// to cleanly terminate Service Manager execution.
virtual void OnServiceManagerInitialized(
base::OnceClosure quit_closure,
service_manager::BackgroundServiceManager* service_manager);
// Allows the embedder to perform platform-specific initialization before
// creating the main message loop.
virtual void PreCreateMainMessageLoop() {}
// Returns true if content should create field trials and initialize the
// FeatureList instance for this process. Default implementation returns true.
// Embedders that need to control when and/or how FeatureList should be
// created should override and return false.
virtual bool ShouldCreateFeatureList();
// Allows the embedder to perform initialization once field trials/FeatureList
// initialization has completed if ShouldCreateFeatureList() returns true.
// Otherwise, the embedder is responsible for calling this method once feature
// list initialization is complete.
virtual void PostFieldTrialInitialization() {}
// Allows the embedder to perform its own initialization after early content
// initialization. At this point, it is possible to post to base::ThreadPool
// or to the main thread loop via base::ThreadTaskRunnerHandle, but the tasks
// won't run immediately.
//
// If ShouldCreateFeatureList() returns true, the field trials and FeatureList
// have been initialized. Otherwise, the implementation must initialize the
// field trials and FeatureList and call PostFieldTrialInitialization().
//
// |is_running_tests| indicates whether it is running in tests.
virtual void PostEarlyInitialization(bool is_running_tests) {}
protected:
friend class ContentClientCreator;
friend class ContentClientInitializer;
friend class BrowserTestBase;
// Called once per relevant process type to allow the embedder to customize
// content. If an embedder wants the default (empty) implementation, don't
// override this.
virtual ContentClient* CreateContentClient();
virtual ContentBrowserClient* CreateContentBrowserClient();
virtual ContentGpuClient* CreateContentGpuClient();
virtual ContentRendererClient* CreateContentRendererClient();
virtual ContentUtilityClient* CreateContentUtilityClient();
};
} // namespace content
#endif // CONTENT_PUBLIC_APP_CONTENT_MAIN_DELEGATE_H_ 這裡的依賴類比如ContentGpuClient，會實作在外部。electron中
D:\dev\electron9\src\electron\shell\browser\electron_gpu_client.h
class ElectronGpuClient : public content::ContentGpuClient {
public:
ElectronGpuClient();
// content::ContentGpuClient:
void PreCreateMessageLoop() override; 實作：
D:\dev\electron9\src\electron\shell\app\electron_main_delegate.cc
content::ContentGpuClient* ElectronMainDelegate::CreateContentGpuClient() {
gpu_client_ = std::make_unique<ElectronGpuClient>();
return gpu_client_.get();
} 一些外部實作的client：
D:\dev\electron9\src\electron\shell\browser\electron_browser_client.cc
3）D:\dev\electron9\src\services\service_manager\embedder\main.cc
D:\dev\electron9\src\electron\shell\common\options_switches.cc
D:\dev\electron9\src\electron\shell\browser\web_contents_preferences.cc