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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "android_webview/browser/aw_browser_main_parts.h"
      6 
      7 #include "android_webview/browser/aw_browser_context.h"
      8 #include "android_webview/browser/aw_result_codes.h"
      9 #include "base/android/build_info.h"
     10 #include "base/android/memory_pressure_listener_android.h"
     11 #include "base/command_line.h"
     12 #include "base/files/file_path.h"
     13 #include "base/path_service.h"
     14 #include "content/public/browser/render_process_host.h"
     15 #include "content/public/common/content_client.h"
     16 #include "content/public/common/content_switches.h"
     17 #include "content/public/common/result_codes.h"
     18 #include "content/public/common/url_utils.h"
     19 #include "gpu/command_buffer/service/mailbox_synchronizer.h"
     20 #include "net/android/network_change_notifier_factory_android.h"
     21 #include "net/base/network_change_notifier.h"
     22 #include "ui/base/l10n/l10n_util_android.h"
     23 #include "ui/base/layout.h"
     24 #include "ui/base/resource/resource_bundle.h"
     25 #include "ui/base/ui_base_paths.h"
     26 
     27 namespace android_webview {
     28 
     29 AwBrowserMainParts::AwBrowserMainParts(AwBrowserContext* browser_context)
     30     : browser_context_(browser_context) {
     31 }
     32 
     33 AwBrowserMainParts::~AwBrowserMainParts() {
     34 }
     35 
     36 void AwBrowserMainParts::PreEarlyInitialization() {
     37   net::NetworkChangeNotifier::SetFactory(
     38       new net::NetworkChangeNotifierFactoryAndroid());
     39 
     40   // Android WebView does not use default MessageLoop. It has its own
     41   // Android specific MessageLoop. Also see MainMessageLoopRun.
     42   DCHECK(!main_message_loop_.get());
     43   main_message_loop_.reset(new base::MessageLoop(base::MessageLoop::TYPE_UI));
     44   base::MessageLoopForUI::current()->Start();
     45 }
     46 
     47 int AwBrowserMainParts::PreCreateThreads() {
     48   ui::ResourceBundle::InitSharedInstanceLocaleOnly(
     49       l10n_util::GetDefaultLocale(), NULL);
     50 
     51   base::FilePath pak_path;
     52   PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &pak_path);
     53 
     54   ui::ResourceBundle::GetSharedInstance().AddDataPackFromPath(
     55       pak_path.AppendASCII("webviewchromium.pak"),
     56       ui::SCALE_FACTOR_NONE);
     57 
     58   base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(
     59       base::android::AttachCurrentThread());
     60 
     61   return content::RESULT_CODE_NORMAL_EXIT;
     62 }
     63 
     64 void AwBrowserMainParts::PreMainMessageLoopRun() {
     65   if (!gpu::gles2::MailboxSynchronizer::Initialize()) {
     66     CommandLine::ForCurrentProcess()->AppendSwitch(
     67         switches::kDisableAccelerated2dCanvas);
     68   }
     69 
     70   browser_context_->PreMainMessageLoopRun();
     71   // This is needed for WebView Classic backwards compatibility
     72   // See crbug.com/298495
     73   content::SetMaxURLChars(20 * 1024 * 1024);
     74 }
     75 
     76 bool AwBrowserMainParts::MainMessageLoopRun(int* result_code) {
     77   // Android WebView does not use default MessageLoop. It has its own
     78   // Android specific MessageLoop.
     79   return true;
     80 }
     81 
     82 }  // namespace android_webview
     83