android_webview/browser/aw_browser_main_parts.cc

// 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.

#include "android_webview/browser/aw_browser_main_parts.h"

#include <memory>

#include "android_webview/browser/aw_browser_context.h"
#include "android_webview/browser/aw_browser_terminator.h"
#include "android_webview/browser/aw_content_browser_client.h"
#include "android_webview/browser/aw_metrics_service_client.h"
#include "android_webview/browser/net/aw_network_change_notifier_factory.h"
#include "android_webview/common/aw_descriptors.h"
#include "android_webview/common/aw_paths.h"
#include "android_webview/common/aw_resource.h"
#include "android_webview/common/aw_switches.h"
#include "android_webview/common/crash_reporter/aw_crash_reporter_client.h"
#include "base/android/apk_assets.h"
#include "base/android/build_info.h"
#include "base/android/locale_utils.h"
#include "base/android/memory_pressure_listener_android.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/i18n/rtl.h"
#include "base/message_loop/message_loop.h"
#include "base/message_loop/message_loop_current.h"
#include "base/path_service.h"
#include "components/crash/content/browser/child_exit_observer_android.h"
#include "components/crash/content/browser/crash_dump_manager_android.h"
#include "components/heap_profiling/supervisor.h"
#include "components/services/heap_profiling/public/cpp/settings.h"
#include "content/public/browser/android/synchronous_compositor.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/result_codes.h"
#include "content/public/common/service_manager_connection.h"
#include "content/public/common/service_names.mojom.h"
#include "net/android/network_change_notifier_factory_android.h"
#include "net/base/network_change_notifier.h"
#include "services/service_manager/public/cpp/connector.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/layout.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/resource/resource_bundle_android.h"
#include "ui/base/ui_base_paths.h"
#include "ui/gl/gl_surface.h"

namespace android_webview {

AwBrowserMainParts::AwBrowserMainParts(AwContentBrowserClient* browser_client)
    : browser_client_(browser_client) {
}

AwBrowserMainParts::~AwBrowserMainParts() {
}

bool AwBrowserMainParts::ShouldContentCreateFeatureList() {
  // If variations is enabled, the FeatureList will be created in
  // AwFieldTrialCreator.
  base::CommandLine* cmd = base::CommandLine::ForCurrentProcess();
  return !cmd->HasSwitch(switches::kEnableWebViewVariations);
}

int AwBrowserMainParts::PreEarlyInitialization() {
  // Network change notifier factory must be singleton, only set factory
  // instance while it is not been created.
  // In most cases, this check is not necessary because SetFactory should be
  // called only once, but both webview and native cronet calls this function,
  // in case of building both webview and cronet to one app, it is required to
  // avoid crashing the app.
  if (!net::NetworkChangeNotifier::GetFactory()) {
    net::NetworkChangeNotifier::SetFactory(
        new AwNetworkChangeNotifierFactory());
  }

  // Creates a MessageLoop for Android WebView if doesn't yet exist.
  DCHECK(!main_message_loop_.get());
  if (!base::MessageLoopCurrent::IsSet())
    main_message_loop_.reset(new base::MessageLoopForUI);
  return service_manager::RESULT_CODE_NORMAL_EXIT;
}

int AwBrowserMainParts::PreCreateThreads() {
  ui::SetLocalePaksStoredInApk(true);
  std::string locale = ui::ResourceBundle::InitSharedInstanceWithLocale(
      base::android::GetDefaultLocaleString(), NULL,
      ui::ResourceBundle::LOAD_COMMON_RESOURCES);
  if (locale.empty()) {
    LOG(WARNING) << "Failed to load locale .pak from the apk. "
        "Bringing up WebView without any locale";
  }
  base::i18n::SetICUDefaultLocale(locale);

  // Try to directly mmap the resources.pak from the apk. Fall back to load
  // from file, using PATH_SERVICE, otherwise.
  base::FilePath pak_file_path;
  base::PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &pak_file_path);
  pak_file_path = pak_file_path.AppendASCII("resources.pak");
  ui::LoadMainAndroidPackFile("assets/resources.pak", pak_file_path);

  base::android::MemoryPressureListenerAndroid::Initialize(
      base::android::AttachCurrentThread());
  ::crash_reporter::ChildExitObserver::Create();

  // We need to create the safe browsing specific directory even if the
  // AwSafeBrowsingConfigHelper::GetSafeBrowsingEnabled() is false
  // initially, because safe browsing can be enabled later at runtime
  // on a per-webview basis.
  base::FilePath safe_browsing_dir;
  if (base::PathService::Get(android_webview::DIR_SAFE_BROWSING,
                             &safe_browsing_dir)) {
    if (!base::PathExists(safe_browsing_dir))
      base::CreateDirectory(safe_browsing_dir);
  }

  base::FilePath crash_dir;
  if (crash_reporter::IsCrashReporterEnabled()) {
    if (base::PathService::Get(android_webview::DIR_CRASH_DUMPS, &crash_dir)) {
      if (!base::PathExists(crash_dir))
        base::CreateDirectory(crash_dir);
    }
  }

  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kWebViewSandboxedRenderer)) {
    // Create the renderers crash manager on the UI thread.
    ::crash_reporter::ChildExitObserver::GetInstance()->RegisterClient(
        std::make_unique<AwBrowserTerminator>(crash_dir));
  }

  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableWebViewVariations)) {
    aw_field_trial_creator_.SetUpFieldTrials();
  }

  return service_manager::RESULT_CODE_NORMAL_EXIT;
}

void AwBrowserMainParts::PreMainMessageLoopRun() {
  browser_client_->InitBrowserContext()->PreMainMessageLoopRun(
      browser_client_->GetNetLog());

  content::RenderFrameHost::AllowInjectingJavaScriptForAndroidWebView();
}

bool AwBrowserMainParts::MainMessageLoopRun(int* result_code) {
  // Android WebView does not use default MessageLoop. It has its own
  // Android specific MessageLoop.
  return true;
}

void AwBrowserMainParts::ServiceManagerConnectionStarted(
    content::ServiceManagerConnection* connection) {
  heap_profiling::Mode mode = heap_profiling::GetModeForStartup();
  if (mode != heap_profiling::Mode::kNone) {
    heap_profiling::Supervisor::GetInstance()->Start(connection,
                                                     base::OnceClosure());
  }
}

}  // namespace android_webview