android_webview/browser/aw_browser_main_parts.cc

   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_dev_tools_discovery_provider.h"
   9 #include "android_webview/browser/aw_media_client_android.h"
  10 #include "android_webview/browser/aw_result_codes.h"
  11 #include "android_webview/common/aw_resource.h"
  12 #include "base/android/apk_assets.h"
  13 #include "base/android/build_info.h"
  14 #include "base/android/locale_utils.h"
  15 #include "base/android/memory_pressure_listener_android.h"
  16 #include "base/files/file_path.h"
  17 #include "base/path_service.h"
  18 #include "content/public/browser/render_process_host.h"
  19 #include "content/public/common/content_client.h"
  20 #include "content/public/common/content_switches.h"
  21 #include "content/public/common/result_codes.h"
  22 #include "content/public/common/url_utils.h"
  23 #include "media/base/android/media_client_android.h"
  24 #include "net/android/network_change_notifier_factory_android.h"
  25 #include "net/base/network_change_notifier.h"
  26 #include "ui/base/l10n/l10n_util.h"
  27 #include "ui/base/layout.h"
  28 #include "ui/base/resource/resource_bundle.h"
  29 #include "ui/base/resource/resource_bundle_android.h"
  30 #include "ui/base/ui_base_paths.h"
  31 #include "ui/gl/gl_surface.h"
  32
  33 namespace android_webview {
  34
  35 AwBrowserMainParts::AwBrowserMainParts(AwBrowserContext* browser_context)
  36     : browser_context_(browser_context) {
  37 }
  38
  39 AwBrowserMainParts::~AwBrowserMainParts() {
  40 }
  41
  42 void AwBrowserMainParts::PreEarlyInitialization() {
  43   net::NetworkChangeNotifier::SetFactory(
  44       new net::NetworkChangeNotifierFactoryAndroid());
  45
  46   // Android WebView does not use default MessageLoop. It has its own
  47   // Android specific MessageLoop. Also see MainMessageLoopRun.
  48   DCHECK(!main_message_loop_.get());
  49   main_message_loop_.reset(new base::MessageLoopForUI);
  50   base::MessageLoopForUI::current()->Start();
  51 }
  52
  53 int AwBrowserMainParts::PreCreateThreads() {
  54   base::MemoryMappedFile::Region pak_region =
  55       base::MemoryMappedFile::Region::kWholeFile;
  56
  57   // TODO(primiano, mkosiba): GetApplicationLocale requires a ResourceBundle
  58   // instance to be present to work correctly so we call this (knowing it will
  59   // fail) just to create the ResourceBundle instance. We should refactor
  60   // ResourceBundle/GetApplicationLocale to not require an instance to be
  61   // initialized.
  62   ui::SetLocalePaksStoredInApk(true);
  63   ui::ResourceBundle::InitSharedInstanceWithLocale(
  64       base::android::GetDefaultLocale(),
  65       NULL,
  66       ui::ResourceBundle::DO_NOT_LOAD_COMMON_RESOURCES);
  67   std::string locale = l10n_util::GetApplicationLocale(std::string());
  68   std::string pak_path = ui::GetPathForAndroidLocalePakWithinApk(locale);
  69   int pak_fd = base::android::OpenApkAsset(pak_path, &pak_region);
  70   if (pak_fd != -1) {
  71     ui::ResourceBundle::CleanupSharedInstance();
  72     ui::ResourceBundle::InitSharedInstanceWithPakFileRegion(
  73         base::File(pak_fd), pak_region);
  74   } else {
  75     LOG(WARNING) << "Failed to load " << locale << ".pak from the apk. "
  76                     "Bringing up WebView without any locale";
  77   }
  78
  79   // Try to directly mmap the webviewchromium.pak from the apk. Fall back to
  80   // load from file, using PATH_SERVICE, otherwise.
  81   pak_fd = base::android::OpenApkAsset("assets/webviewchromium.pak",
  82                                        &pak_region);
  83   if (pak_fd != -1) {
  84     ui::ResourceBundle::GetSharedInstance().AddDataPackFromFileRegion(
  85         base::File(pak_fd), pak_region, ui::SCALE_FACTOR_NONE);
  86   } else {
  87     base::FilePath pak_path;
  88     PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &pak_path);
  89     LOG(WARNING) << "Cannot load webviewchromium.pak assets from the apk. "
  90                     "Falling back loading it from " << pak_path.MaybeAsASCII();
  91     ui::ResourceBundle::GetSharedInstance().AddDataPackFromPath(
  92         pak_path.AppendASCII("webviewchromium.pak"), ui::SCALE_FACTOR_NONE);
  93   }
  94
  95   base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(
  96       base::android::AttachCurrentThread());
  97
  98   return content::RESULT_CODE_NORMAL_EXIT;
  99 }
 100
 101 void AwBrowserMainParts::PreMainMessageLoopRun() {
 102   browser_context_->PreMainMessageLoopRun();
 103
 104   AwDevToolsDiscoveryProvider::Install();
 105
 106   media::SetMediaClientAndroid(
 107       new AwMediaClientAndroid(AwResource::GetConfigKeySystemUuidMapping()));
 108
 109   gfx::GLSurface::InitializeOneOff();
 110
 111   // This is needed for WebView Classic backwards compatibility
 112   // See crbug.com/298495
 113   content::SetMaxURLChars(20 * 1024 * 1024);
 114 }
 115
 116 bool AwBrowserMainParts::MainMessageLoopRun(int* result_code) {
 117   // Android WebView does not use default MessageLoop. It has its own
 118   // Android specific MessageLoop.
 119   return true;
 120 }
 121
 122 }  // namespace android_webview