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// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/browser.h"
#include <memory>
#include <string>
#include <utility>
#include "base/files/file_util.h"
#include "base/no_destructor.h"
#include "base/path_service.h"
#include "base/run_loop.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/thread_restrictions.h"
#include "chrome/common/chrome_paths.h"
#include "shell/browser/browser_observer.h"
#include "shell/browser/electron_browser_main_parts.h"
#include "shell/browser/login_handler.h"
#include "shell/browser/native_window.h"
#include "shell/browser/window_list.h"
#include "shell/common/application_info.h"
#include "shell/common/electron_paths.h"
#include "shell/common/gin_helper/arguments.h"
#include "shell/common/thread_restrictions.h"
namespace electron {
namespace {
// Call |quit| after Chromium is fully started.
//
// This is important for quitting immediately in the "ready" event, when
// certain initialization task may still be pending, and quitting at that time
// could end up with crash on exit.
void RunQuitClosure(base::OnceClosure quit) {
// On Linux/Windows the "ready" event is emitted in "PreMainMessageLoopRun",
// make sure we quit after message loop has run for once.
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(FROM_HERE,
std::move(quit));
}
} // namespace
#if BUILDFLAG(IS_WIN)
Browser::LaunchItem::LaunchItem() = default;
Browser::LaunchItem::~LaunchItem() = default;
Browser::LaunchItem::LaunchItem(const LaunchItem& other) = default;
#endif
Browser::LoginItemSettings::LoginItemSettings() = default;
Browser::LoginItemSettings::~LoginItemSettings() = default;
Browser::LoginItemSettings::LoginItemSettings(const LoginItemSettings& other) =
default;
Browser::Browser() {
WindowList::AddObserver(this);
}
Browser::~Browser() {
WindowList::RemoveObserver(this);
}
// static
Browser* Browser::Get() {
return ElectronBrowserMainParts::Get()->browser();
}
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX)
void Browser::Focus(gin::Arguments* args) {
// Focus on the first visible window.
for (auto* const window : WindowList::GetWindows()) {
if (window->IsVisible()) {
window->Focus(true);
break;
}
}
}
#endif
void Browser::Quit() {
if (is_quitting_)
return;
is_quitting_ = HandleBeforeQuit();
if (!is_quitting_)
return;
if (electron::WindowList::IsEmpty())
NotifyAndShutdown();
else
electron::WindowList::CloseAllWindows();
}
void Browser::Exit(gin::Arguments* args) {
int code = 0;
args->GetNext(&code);
if (!ElectronBrowserMainParts::Get()->SetExitCode(code)) {
// Message loop is not ready, quit directly.
exit(code);
} else {
// Prepare to quit when all windows have been closed.
is_quitting_ = true;
// Remember this caller so that we don't emit unrelated events.
is_exiting_ = true;
// Must destroy windows before quitting, otherwise bad things can happen.
if (electron::WindowList::IsEmpty()) {
Shutdown();
} else {
// Unlike Quit(), we do not ask to close window, but destroy the window
// without asking.
electron::WindowList::DestroyAllWindows();
}
}
}
void Browser::Shutdown() {
if (is_shutdown_)
return;
is_shutdown_ = true;
is_quitting_ = true;
for (BrowserObserver& observer : observers_)
observer.OnQuit();
if (quit_main_message_loop_) {
RunQuitClosure(std::move(quit_main_message_loop_));
} else {
// There is no message loop available so we are in early stage, wait until
// the quit_main_message_loop_ is available.
// Exiting now would leave defunct processes behind.
}
}
std::string Browser::GetVersion() const {
std::string ret = OverriddenApplicationVersion();
if (ret.empty())
ret = GetExecutableFileVersion();
return ret;
}
void Browser::SetVersion(const std::string& version) {
OverriddenApplicationVersion() = version;
}
std::string Browser::GetName() const {
std::string ret = OverriddenApplicationName();
if (ret.empty())
ret = GetExecutableFileProductName();
return ret;
}
void Browser::SetName(const std::string& name) {
OverriddenApplicationName() = name;
}
int Browser::GetBadgeCount() {
return badge_count_;
}
bool Browser::OpenFile(const std::string& file_path) {
bool prevent_default = false;
for (BrowserObserver& observer : observers_)
observer.OnOpenFile(&prevent_default, file_path);
return prevent_default;
}
void Browser::OpenURL(const std::string& url) {
for (BrowserObserver& observer : observers_)
observer.OnOpenURL(url);
}
void Browser::Activate(bool has_visible_windows) {
for (BrowserObserver& observer : observers_)
observer.OnActivate(has_visible_windows);
}
void Browser::WillFinishLaunching() {
for (BrowserObserver& observer : observers_)
observer.OnWillFinishLaunching();
}
void Browser::DidFinishLaunching(base::Value::Dict launch_info) {
// Make sure the userData directory is created.
ScopedAllowBlockingForElectron allow_blocking;
base::FilePath user_data;
if (base::PathService::Get(chrome::DIR_USER_DATA, &user_data)) {
base::CreateDirectoryAndGetError(user_data, nullptr);
#if BUILDFLAG(IS_WIN)
base::SetExtraNoExecuteAllowedPath(chrome::DIR_USER_DATA);
#endif
}
is_ready_ = true;
if (ready_promise_) {
ready_promise_->Resolve();
}
for (BrowserObserver& observer : observers_)
observer.OnFinishLaunching(launch_info.Clone());
}
v8::Local<v8::Value> Browser::WhenReady(v8::Isolate* isolate) {
if (!ready_promise_) {
ready_promise_ = std::make_unique<gin_helper::Promise<void>>(isolate);
if (is_ready()) {
ready_promise_->Resolve();
}
}
return ready_promise_->GetHandle();
}
void Browser::OnAccessibilitySupportChanged() {
for (BrowserObserver& observer : observers_)
observer.OnAccessibilitySupportChanged();
}
void Browser::PreMainMessageLoopRun() {
for (BrowserObserver& observer : observers_) {
observer.OnPreMainMessageLoopRun();
}
}
void Browser::PreCreateThreads() {
for (BrowserObserver& observer : observers_) {
observer.OnPreCreateThreads();
}
}
void Browser::SetMainMessageLoopQuitClosure(base::OnceClosure quit_closure) {
if (is_shutdown_)
RunQuitClosure(std::move(quit_closure));
else
quit_main_message_loop_ = std::move(quit_closure);
}
void Browser::NotifyAndShutdown() {
if (is_shutdown_)
return;
bool prevent_default = false;
for (BrowserObserver& observer : observers_)
observer.OnWillQuit(&prevent_default);
if (prevent_default) {
is_quitting_ = false;
return;
}
Shutdown();
}
bool Browser::HandleBeforeQuit() {
bool prevent_default = false;
for (BrowserObserver& observer : observers_)
observer.OnBeforeQuit(&prevent_default);
return !prevent_default;
}
void Browser::OnWindowCloseCancelled(NativeWindow* window) {
if (is_quitting_)
// Once a beforeunload handler has prevented the closing, we think the quit
// is cancelled too.
is_quitting_ = false;
}
void Browser::OnWindowAllClosed() {
if (is_exiting_) {
Shutdown();
} else if (is_quitting_) {
NotifyAndShutdown();
} else {
for (BrowserObserver& observer : observers_)
observer.OnWindowAllClosed();
}
}
#if BUILDFLAG(IS_MAC)
void Browser::NewWindowForTab() {
for (BrowserObserver& observer : observers_)
observer.OnNewWindowForTab();
}
void Browser::DidBecomeActive() {
for (BrowserObserver& observer : observers_)
observer.OnDidBecomeActive();
}
#endif
} // namespace electron