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 "android_webview/native/aw_assets.h"
10#include "base/android/build_info.h"
11#include "base/android/memory_pressure_listener_android.h"
12#include "base/command_line.h"
13#include "base/files/file_path.h"
14#include "base/path_service.h"
15#include "content/public/browser/render_process_host.h"
16#include "content/public/common/content_client.h"
17#include "content/public/common/content_switches.h"
18#include "content/public/common/result_codes.h"
19#include "content/public/common/url_utils.h"
20#include "gpu/command_buffer/service/mailbox_synchronizer.h"
21#include "net/android/network_change_notifier_factory_android.h"
22#include "net/base/network_change_notifier.h"
23#include "ui/base/l10n/l10n_util.h"
24#include "ui/base/l10n/l10n_util_android.h"
25#include "ui/base/layout.h"
26#include "ui/base/resource/resource_bundle.h"
27#include "ui/base/ui_base_paths.h"
28
29namespace android_webview {
30
31AwBrowserMainParts::AwBrowserMainParts(AwBrowserContext* browser_context)
32    : browser_context_(browser_context) {
33}
34
35AwBrowserMainParts::~AwBrowserMainParts() {
36}
37
38void AwBrowserMainParts::PreEarlyInitialization() {
39  net::NetworkChangeNotifier::SetFactory(
40      new net::NetworkChangeNotifierFactoryAndroid());
41
42  // Android WebView does not use default MessageLoop. It has its own
43  // Android specific MessageLoop. Also see MainMessageLoopRun.
44  DCHECK(!main_message_loop_.get());
45  main_message_loop_.reset(new base::MessageLoopForUI);
46  base::MessageLoopForUI::current()->Start();
47}
48
49int AwBrowserMainParts::PreCreateThreads() {
50  int pak_fd = 0;
51  int64 pak_off = 0;
52  int64 pak_len = 0;
53
54  // TODO(primiano, mkosiba): GetApplicationLocale requires a ResourceBundle
55  // instance to be present to work correctly so we call this (knowing it will
56  // fail) just to create the ResourceBundle instance. We should refactor
57  // ResourceBundle/GetApplicationLocale to not require an instance to be
58  // initialized.
59  ui::ResourceBundle::InitSharedInstanceWithLocale(
60      l10n_util::GetDefaultLocale(),
61      NULL,
62      ui::ResourceBundle::DO_NOT_LOAD_COMMON_RESOURCES);
63  std::string locale = l10n_util::GetApplicationLocale(std::string()) + ".pak";
64  if (AwAssets::OpenAsset(locale, &pak_fd, &pak_off, &pak_len)) {
65    VLOG(0) << "Load from apk succesful, fd=" << pak_fd << " off=" << pak_off
66            << " len=" << 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    VLOG(0) << "Loading webviewchromium.pak from, fd:" << pak_fd
79            << " off:" << pak_off << " len:" << pak_len;
80    ui::ResourceBundle::GetSharedInstance().AddDataPackFromFileRegion(
81        base::File(pak_fd),
82        base::MemoryMappedFile::Region(pak_off, pak_len),
83        ui::SCALE_FACTOR_NONE);
84  } else {
85    base::FilePath pak_path;
86    PathService::Get(ui::DIR_RESOURCE_PAKS_ANDROID, &pak_path);
87    LOG(WARNING) << "Cannot load webviewchromium.pak assets from the apk. "
88                    "Falling back loading it from " << pak_path.MaybeAsASCII();
89    ui::ResourceBundle::GetSharedInstance().AddDataPackFromPath(
90        pak_path.AppendASCII("webviewchromium.pak"), ui::SCALE_FACTOR_NONE);
91  }
92
93  base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(
94      base::android::AttachCurrentThread());
95
96  return content::RESULT_CODE_NORMAL_EXIT;
97}
98
99void AwBrowserMainParts::PreMainMessageLoopRun() {
100  // TODO(boliu): Can't support accelerated 2d canvas and WebGL with ubercomp
101  // yet: crbug.com/352424.
102  if (!gpu::gles2::MailboxSynchronizer::Initialize()) {
103    CommandLine* cl = CommandLine::ForCurrentProcess();
104    cl->AppendSwitch(switches::kDisableAccelerated2dCanvas);
105    cl->AppendSwitch(switches::kDisableExperimentalWebGL);
106  }
107
108  browser_context_->PreMainMessageLoopRun();
109  // This is needed for WebView Classic backwards compatibility
110  // See crbug.com/298495
111  content::SetMaxURLChars(20 * 1024 * 1024);
112}
113
114bool AwBrowserMainParts::MainMessageLoopRun(int* result_code) {
115  // Android WebView does not use default MessageLoop. It has its own
116  // Android specific MessageLoop.
117  return true;
118}
119
120}  // namespace android_webview
121