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 "android_webview/native/public/aw_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/ui_base_paths.h"
  30
  31 namespace android_webview {
  32
  33 AwBrowserMainParts::AwBrowserMainParts(AwBrowserContext* browser_context)
  34     : browser_context_(browser_context) {
  35 }
  36
  37 AwBrowserMainParts::~AwBrowserMainParts() {
  38 }
  39
  40 void AwBrowserMainParts::PreEarlyInitialization() {
  41   net::NetworkChangeNotifier::SetFactory(
  42       new net::NetworkChangeNotifierFactoryAndroid());
  43
  44   // Android WebView does not use default MessageLoop. It has its own
  45   // Android specific MessageLoop. Also see MainMessageLoopRun.
  46   DCHECK(!main_message_loop_.get());
  47   main_message_loop_.reset(new base::MessageLoopForUI);
  48   base::MessageLoopForUI::current()->Start();
  49 }
  50
  51 int AwBrowserMainParts::PreCreateThreads() {
  52   int pak_fd = 0;
  53   int64 pak_off = 0;
  54   int64 pak_len = 0;
  55
  56   // TODO(primiano, mkosiba): GetApplicationLocale requires a ResourceBundle
  57   // instance to be present to work correctly so we call this (knowing it will
  58   // fail) just to create the ResourceBundle instance. We should refactor
  59   // ResourceBundle/GetApplicationLocale to not require an instance to be
  60   // initialized.
  61   ui::ResourceBundle::InitSharedInstanceWithLocale(
  62       base::android::GetDefaultLocale(),
  63       NULL,
  64       ui::ResourceBundle::DO_NOT_LOAD_COMMON_RESOURCES);
  65   std::string locale = l10n_util::GetApplicationLocale(std::string()) + ".pak";
  66   if (AwAssets::OpenAsset(locale, &pak_fd, &pak_off, &pak_len)) {
  67     ui::ResourceBundle::CleanupSharedInstance();
  68     ui::ResourceBundle::InitSharedInstanceWithPakFileRegion(
  69         base::File(pak_fd), base::MemoryMappedFile::Region(pak_off, pak_len));
  70   } else {
  71     LOG(WARNING) << "Failed to load " << locale << ".pak from the apk too. "
  72                     "Bringing up WebView without any locale";
  73   }
  74
  75   // Try to directly mmap the webviewchromium.pak from the apk. Fall back to
  76   // load from file, using PATH_SERVICE, otherwise.
  77   if (AwAssets::OpenAsset("webviewchromium.pak", &pak_fd, &pak_off, &pak_len)) {
  78     ui::ResourceBundle::GetSharedInstance().AddDataPackFromFileRegion(
  79         base::File(pak_fd),
  80         base::MemoryMappedFile::Region(pak_off, pak_len),
  81         ui::SCALE_FACTOR_NONE);
  82   } else {
  83     base::FilePath pak_path;
  84     PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &pak_path);
  85     LOG(WARNING) << "Cannot load webviewchromium.pak assets from the apk. "
  86                     "Falling back loading it from " << pak_path.MaybeAsASCII();
  87     ui::ResourceBundle::GetSharedInstance().AddDataPackFromPath(
  88         pak_path.AppendASCII("webviewchromium.pak"), ui::SCALE_FACTOR_NONE);
  89   }
  90
  91   base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(
  92       base::android::AttachCurrentThread());
  93
  94   return content::RESULT_CODE_NORMAL_EXIT;
  95 }
  96
  97 void AwBrowserMainParts::PreMainMessageLoopRun() {
  98   browser_context_->PreMainMessageLoopRun();
  99
 100   AwDevToolsDiscoveryProvider::Install();
 101
 102   media::SetMediaClientAndroid(
 103       new AwMediaClientAndroid(AwResource::GetConfigKeySystemUuidMapping()));
 104
 105   // This is needed for WebView Classic backwards compatibility
 106   // See crbug.com/298495
 107   content::SetMaxURLChars(20 * 1024 * 1024);
 108 }
 109
 110 bool AwBrowserMainParts::MainMessageLoopRun(int* result_code) {
 111   // Android WebView does not use default MessageLoop. It has its own
 112   // Android specific MessageLoop.
 113   return true;
 114 }
 115
 116 }  // namespace android_webview