browser.cc revision 7dbb3d5cf0c15f500944d211057644d6a2f37371
1// Copyright 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 "chrome/browser/ui/browser.h"
6
7#if defined(OS_WIN)
8#include <windows.h>
9#include <shellapi.h>
10#endif  // defined(OS_WIN)
11
12#include <algorithm>
13#include <string>
14
15#include "base/base_paths.h"
16#include "base/bind.h"
17#include "base/command_line.h"
18#include "base/logging.h"
19#include "base/metrics/histogram.h"
20#include "base/path_service.h"
21#include "base/prefs/pref_service.h"
22#include "base/process_info.h"
23#include "base/strings/string_number_conversions.h"
24#include "base/strings/string_util.h"
25#include "base/strings/stringprintf.h"
26#include "base/strings/utf_string_conversions.h"
27#include "base/threading/thread.h"
28#include "base/threading/thread_restrictions.h"
29#include "base/time/time.h"
30#include "chrome/app/chrome_command_ids.h"
31#include "chrome/browser/app_mode/app_mode_utils.h"
32#include "chrome/browser/autofill/personal_data_manager_factory.h"
33#include "chrome/browser/background/background_contents_service.h"
34#include "chrome/browser/background/background_contents_service_factory.h"
35#include "chrome/browser/bookmarks/bookmark_model.h"
36#include "chrome/browser/bookmarks/bookmark_utils.h"
37#include "chrome/browser/browser_process.h"
38#include "chrome/browser/browser_shutdown.h"
39#include "chrome/browser/character_encoding.h"
40#include "chrome/browser/chrome_notification_types.h"
41#include "chrome/browser/chrome_page_zoom.h"
42#include "chrome/browser/content_settings/host_content_settings_map.h"
43#include "chrome/browser/content_settings/tab_specific_content_settings.h"
44#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
45#include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
46#include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
47#include "chrome/browser/devtools/devtools_toggle_action.h"
48#include "chrome/browser/devtools/devtools_window.h"
49#include "chrome/browser/download/download_item_model.h"
50#include "chrome/browser/download/download_service.h"
51#include "chrome/browser/download/download_service_factory.h"
52#include "chrome/browser/download/download_shelf.h"
53#include "chrome/browser/extensions/browser_extension_window_controller.h"
54#include "chrome/browser/extensions/extension_prefs.h"
55#include "chrome/browser/extensions/extension_service.h"
56#include "chrome/browser/extensions/extension_system.h"
57#include "chrome/browser/extensions/tab_helper.h"
58#include "chrome/browser/favicon/favicon_tab_helper.h"
59#include "chrome/browser/file_select_helper.h"
60#include "chrome/browser/first_run/first_run.h"
61#include "chrome/browser/google/google_url_tracker.h"
62#include "chrome/browser/infobars/infobar_service.h"
63#include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
64#include "chrome/browser/lifetime/application_lifetime.h"
65#include "chrome/browser/media/media_capture_devices_dispatcher.h"
66#include "chrome/browser/net/url_fixer_upper.h"
67#include "chrome/browser/notifications/notification_ui_manager.h"
68#include "chrome/browser/pepper_broker_infobar_delegate.h"
69#include "chrome/browser/prefs/incognito_mode_prefs.h"
70#include "chrome/browser/profiles/profile.h"
71#include "chrome/browser/profiles/profile_destroyer.h"
72#include "chrome/browser/profiles/profile_manager.h"
73#include "chrome/browser/profiles/profile_metrics.h"
74#include "chrome/browser/repost_form_warning_controller.h"
75#include "chrome/browser/search/search.h"
76#include "chrome/browser/sessions/session_service.h"
77#include "chrome/browser/sessions/session_service_factory.h"
78#include "chrome/browser/sessions/session_tab_helper.h"
79#include "chrome/browser/sessions/session_types.h"
80#include "chrome/browser/sessions/tab_restore_service.h"
81#include "chrome/browser/sessions/tab_restore_service_factory.h"
82#include "chrome/browser/sync/profile_sync_service.h"
83#include "chrome/browser/sync/profile_sync_service_factory.h"
84#include "chrome/browser/sync/sync_ui_util.h"
85#include "chrome/browser/tab_contents/background_contents.h"
86#include "chrome/browser/tab_contents/retargeting_details.h"
87#include "chrome/browser/tab_contents/tab_util.h"
88#include "chrome/browser/themes/theme_service.h"
89#include "chrome/browser/themes/theme_service_factory.h"
90#include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
91#include "chrome/browser/ui/blocked_content/blocked_content_tab_helper.h"
92#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
93#include "chrome/browser/ui/browser_command_controller.h"
94#include "chrome/browser/ui/browser_commands.h"
95#include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
96#include "chrome/browser/ui/browser_dialogs.h"
97#include "chrome/browser/ui/browser_finder.h"
98#include "chrome/browser/ui/browser_instant_controller.h"
99#include "chrome/browser/ui/browser_iterator.h"
100#include "chrome/browser/ui/browser_list.h"
101#include "chrome/browser/ui/browser_navigator.h"
102#include "chrome/browser/ui/browser_tab_contents.h"
103#include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
104#include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
105#include "chrome/browser/ui/browser_tabstrip.h"
106#include "chrome/browser/ui/browser_toolbar_model_delegate.h"
107#include "chrome/browser/ui/browser_ui_prefs.h"
108#include "chrome/browser/ui/browser_window.h"
109#include "chrome/browser/ui/chrome_pages.h"
110#include "chrome/browser/ui/chrome_select_file_policy.h"
111#include "chrome/browser/ui/fast_unload_controller.h"
112#include "chrome/browser/ui/find_bar/find_bar.h"
113#include "chrome/browser/ui/find_bar/find_bar_controller.h"
114#include "chrome/browser/ui/find_bar/find_tab_helper.h"
115#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
116#include "chrome/browser/ui/global_error/global_error.h"
117#include "chrome/browser/ui/global_error/global_error_service.h"
118#include "chrome/browser/ui/global_error/global_error_service_factory.h"
119#include "chrome/browser/ui/omnibox/location_bar.h"
120#include "chrome/browser/ui/search/search_delegate.h"
121#include "chrome/browser/ui/search/search_model.h"
122#include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
123#include "chrome/browser/ui/singleton_tabs.h"
124#include "chrome/browser/ui/status_bubble.h"
125#include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
126#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
127#include "chrome/browser/ui/tab_modal_confirm_dialog.h"
128#include "chrome/browser/ui/tabs/dock_info.h"
129#include "chrome/browser/ui/tabs/tab_menu_model.h"
130#include "chrome/browser/ui/tabs/tab_strip_model.h"
131#include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
132#include "chrome/browser/ui/unload_controller.h"
133#include "chrome/browser/ui/web_applications/web_app_ui.h"
134#include "chrome/browser/ui/webui/signin/login_ui_service.h"
135#include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
136#include "chrome/browser/ui/window_sizer/window_sizer.h"
137#include "chrome/browser/ui/zoom/zoom_controller.h"
138#include "chrome/browser/upgrade_detector.h"
139#include "chrome/browser/web_applications/web_app.h"
140#include "chrome/common/chrome_constants.h"
141#include "chrome/common/chrome_switches.h"
142#include "chrome/common/custom_handlers/protocol_handler.h"
143#include "chrome/common/extensions/background_info.h"
144#include "chrome/common/extensions/extension.h"
145#include "chrome/common/extensions/extension_constants.h"
146#include "chrome/common/pref_names.h"
147#include "chrome/common/profiling.h"
148#include "chrome/common/search_types.h"
149#include "chrome/common/startup_metric_utils.h"
150#include "chrome/common/url_constants.h"
151#include "components/web_modal/web_contents_modal_dialog_manager.h"
152#include "content/public/browser/devtools_manager.h"
153#include "content/public/browser/download_item.h"
154#include "content/public/browser/download_manager.h"
155#include "content/public/browser/interstitial_page.h"
156#include "content/public/browser/invalidate_type.h"
157#include "content/public/browser/navigation_controller.h"
158#include "content/public/browser/navigation_entry.h"
159#include "content/public/browser/notification_details.h"
160#include "content/public/browser/notification_service.h"
161#include "content/public/browser/plugin_service.h"
162#include "content/public/browser/render_process_host.h"
163#include "content/public/browser/render_view_host.h"
164#include "content/public/browser/site_instance.h"
165#include "content/public/browser/user_metrics.h"
166#include "content/public/browser/web_contents.h"
167#include "content/public/browser/web_contents_view.h"
168#include "content/public/common/content_restriction.h"
169#include "content/public/common/content_switches.h"
170#include "content/public/common/page_zoom.h"
171#include "content/public/common/renderer_preferences.h"
172#include "extensions/common/constants.h"
173#include "grit/chromium_strings.h"
174#include "grit/generated_resources.h"
175#include "grit/locale_settings.h"
176#include "grit/theme_resources.h"
177#include "net/base/net_util.h"
178#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
179#include "net/cookies/cookie_monster.h"
180#include "net/url_request/url_request_context.h"
181#include "ui/base/l10n/l10n_util.h"
182#include "ui/base/window_open_disposition.h"
183#include "ui/gfx/point.h"
184#include "ui/shell_dialogs/selected_file_info.h"
185#include "webkit/plugins/webplugininfo.h"
186
187#if defined(OS_WIN)
188#include "base/win/metro.h"
189#include "chrome/browser/shell_integration.h"
190#include "chrome/browser/ssl/ssl_error_info.h"
191#include "chrome/browser/task_manager/task_manager.h"
192#include "chrome/browser/ui/view_ids.h"
193#include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
194#include "ui/base/win/shell.h"
195#include "ui/views/win/hwnd_util.h"
196#endif  // OS_WIN
197
198#if defined(OS_CHROMEOS)
199#include "chrome/browser/chromeos/drive/file_system_util.h"
200#endif
201
202#if defined(USE_ASH)
203#include "ash/ash_switches.h"
204#endif
205
206using base::TimeDelta;
207using content::NativeWebKeyboardEvent;
208using content::NavigationController;
209using content::NavigationEntry;
210using content::OpenURLParams;
211using content::PluginService;
212using content::Referrer;
213using content::SiteInstance;
214using content::UserMetricsAction;
215using content::WebContents;
216using extensions::Extension;
217using ui::WebDialogDelegate;
218using web_modal::WebContentsModalDialogManager;
219
220///////////////////////////////////////////////////////////////////////////////
221
222namespace {
223
224// The URL to be loaded to display the "Report a broken page" form.
225const char kBrokenPageUrl[] =
226    "https://www.google.com/support/chrome/bin/request.py?contact_type="
227    "broken_website&format=inproduct&p.page_title=$1&p.page_url=$2";
228
229// How long we wait before updating the browser chrome while loading a page.
230const int kUIUpdateCoalescingTimeMS = 200;
231
232BrowserWindow* CreateBrowserWindow(Browser* browser) {
233  return BrowserWindow::CreateBrowserWindow(browser);
234}
235
236// Is the fast tab unload experiment enabled?
237bool IsFastTabUnloadEnabled() {
238  return CommandLine::ForCurrentProcess()->HasSwitch(
239        switches::kEnableFastUnload);
240}
241
242}  // namespace
243
244////////////////////////////////////////////////////////////////////////////////
245// Browser, CreateParams:
246
247Browser::CreateParams::CreateParams(Profile* profile,
248                                    chrome::HostDesktopType host_desktop_type)
249    : type(TYPE_TABBED),
250      profile(profile),
251      host_desktop_type(host_desktop_type),
252      app_type(APP_TYPE_HOST),
253      initial_show_state(ui::SHOW_STATE_DEFAULT),
254      is_session_restore(false),
255      window(NULL) {
256}
257
258Browser::CreateParams::CreateParams(Type type,
259                                    Profile* profile,
260                                    chrome::HostDesktopType host_desktop_type)
261    : type(type),
262      profile(profile),
263      host_desktop_type(host_desktop_type),
264      app_type(APP_TYPE_HOST),
265      initial_show_state(ui::SHOW_STATE_DEFAULT),
266      is_session_restore(false),
267      window(NULL) {
268}
269
270// static
271Browser::CreateParams Browser::CreateParams::CreateForApp(
272    Type type,
273    const std::string& app_name,
274    const gfx::Rect& window_bounds,
275    Profile* profile,
276    chrome::HostDesktopType host_desktop_type) {
277  DCHECK(type != TYPE_TABBED);
278  DCHECK(!app_name.empty());
279
280  CreateParams params(type, profile, host_desktop_type);
281  params.app_name = app_name;
282  params.app_type = APP_TYPE_CHILD;
283  params.initial_bounds = window_bounds;
284
285  return params;
286}
287
288// static
289Browser::CreateParams Browser::CreateParams::CreateForDevTools(
290    Profile* profile,
291    chrome::HostDesktopType host_desktop_type) {
292  CreateParams params(TYPE_POPUP, profile, host_desktop_type);
293  params.app_name = DevToolsWindow::kDevToolsApp;
294  return params;
295}
296
297////////////////////////////////////////////////////////////////////////////////
298// Browser, InterstitialObserver:
299
300class Browser::InterstitialObserver : public content::WebContentsObserver {
301 public:
302  InterstitialObserver(Browser* browser, content::WebContents* web_contents)
303      : WebContentsObserver(web_contents),
304        browser_(browser) {
305  }
306
307  using content::WebContentsObserver::web_contents;
308
309  virtual void DidAttachInterstitialPage() OVERRIDE {
310    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
311  }
312
313  virtual void DidDetachInterstitialPage() OVERRIDE {
314    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
315  }
316
317 private:
318  Browser* browser_;
319
320  DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
321};
322
323///////////////////////////////////////////////////////////////////////////////
324// Browser, Constructors, Creation, Showing:
325
326Browser::Browser(const CreateParams& params)
327    : type_(params.type),
328      profile_(params.profile),
329      window_(NULL),
330      tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
331      tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
332                                         params.profile)),
333      app_name_(params.app_name),
334      app_type_(params.app_type),
335      chrome_updater_factory_(this),
336      cancel_download_confirmation_state_(NOT_PROMPTED),
337      override_bounds_(params.initial_bounds),
338      initial_show_state_(params.initial_show_state),
339      is_session_restore_(params.is_session_restore),
340      host_desktop_type_(params.host_desktop_type),
341      weak_factory_(this),
342      content_setting_bubble_model_delegate_(
343          new BrowserContentSettingBubbleModelDelegate(this)),
344      toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
345      tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
346      synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
347      bookmark_bar_state_(BookmarkBar::HIDDEN),
348      command_controller_(new chrome::BrowserCommandController(
349          this, g_browser_process->profile_manager())),
350      window_has_shown_(false) {
351  // If this causes a crash then a window is being opened using a profile type
352  // that is disallowed by policy. The crash prevents the disabled window type
353  // from opening at all, but the path that triggered it should be fixed.
354  CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
355
356  // TODO(jeremy): Move to initializer list once flag is removed.
357  if (IsFastTabUnloadEnabled())
358    fast_unload_controller_.reset(new chrome::FastUnloadController(this));
359  else
360    unload_controller_.reset(new chrome::UnloadController(this));
361
362  if (!app_name_.empty())
363    chrome::RegisterAppPrefs(app_name_, profile_);
364  tab_strip_model_->AddObserver(this);
365
366  toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
367  search_model_.reset(new SearchModel());
368  search_delegate_.reset(
369      new SearchDelegate(search_model_.get(), toolbar_model_.get()));
370
371  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
372                 content::Source<Profile>(profile_->GetOriginalProfile()));
373  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
374                 content::Source<Profile>(profile_->GetOriginalProfile()));
375  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
376                 content::Source<Profile>(profile_->GetOriginalProfile()));
377  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
378                 content::NotificationService::AllSources());
379#if defined(ENABLE_THEMES)
380  registrar_.Add(
381      this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
382      content::Source<ThemeService>(
383          ThemeServiceFactory::GetForProfile(profile_)));
384#endif
385  registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
386                 content::NotificationService::AllSources());
387
388  profile_pref_registrar_.Init(profile_->GetPrefs());
389  profile_pref_registrar_.Add(
390      prefs::kDevToolsDisabled,
391      base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
392  profile_pref_registrar_.Add(
393      prefs::kShowBookmarkBar,
394      base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
395                 BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
396
397  BrowserList::AddBrowser(this);
398
399  // NOTE: These prefs all need to be explicitly destroyed in the destructor
400  // or you'll get a nasty surprise when you run the incognito tests.
401  encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
402                             profile_->GetPrefs());
403
404  if (is_type_tabbed())
405    instant_controller_.reset(new BrowserInstantController(this));
406
407  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
408
409  ProfileMetrics::LogProfileLaunch(profile_);
410
411  window_ = params.window ? params.window : CreateBrowserWindow(this);
412
413  // TODO(beng): move to BrowserFrameWin.
414#if defined(OS_WIN)
415  // Set the app user model id for this application to that of the application
416  // name.  See http://crbug.com/7028.
417  ui::win::SetAppIdForWindow(
418      is_app() ?
419      ShellIntegration::GetAppModelIdForProfile(UTF8ToWide(app_name_),
420                                                profile_->GetPath()) :
421      ShellIntegration::GetChromiumModelIdForProfile(profile_->GetPath()),
422      views::HWNDForNativeWindow(window()->GetNativeWindow()));
423#endif
424
425  // Create the extension window controller before sending notifications.
426  extension_window_controller_.reset(
427      new BrowserExtensionWindowController(this));
428
429  // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
430  //             replace uses of this with BL's notifications.
431  content::NotificationService::current()->Notify(
432      chrome::NOTIFICATION_BROWSER_WINDOW_READY,
433      content::Source<Browser>(this),
434      content::NotificationService::NoDetails());
435
436  // TODO(beng): move to ChromeBrowserMain:
437  if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
438#if defined(OS_WIN)
439    // Notify PDM that this is a first run.
440    ImportAutofillDataWin(
441        autofill::PersonalDataManagerFactory::GetForProfile(profile_));
442#endif  // defined(OS_WIN)
443  }
444
445  fullscreen_controller_.reset(new FullscreenController(this));
446}
447
448Browser::~Browser() {
449  // The tab strip should not have any tabs at this point.
450  if (!browser_shutdown::ShuttingDownWithoutClosingBrowsers())
451    DCHECK(tab_strip_model_->empty());
452
453  tab_strip_model_->RemoveObserver(this);
454
455  // Destroy the BrowserCommandController before removing the browser, so that
456  // it doesn't act on any notifications that are sent as a result of removing
457  // the browser.
458  command_controller_.reset();
459  BrowserList::RemoveBrowser(this);
460
461  SessionService* session_service =
462      SessionServiceFactory::GetForProfile(profile_);
463  if (session_service)
464    session_service->WindowClosed(session_id_);
465
466  TabRestoreService* tab_restore_service =
467      TabRestoreServiceFactory::GetForProfile(profile());
468  if (tab_restore_service)
469    tab_restore_service->BrowserClosed(tab_restore_service_delegate());
470
471#if !defined(OS_MACOSX)
472  if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
473    // We're the last browser window with this profile. We need to nuke the
474    // TabRestoreService, which will start the shutdown of the
475    // NavigationControllers and allow for proper shutdown. If we don't do this
476    // chrome won't shutdown cleanly, and may end up crashing when some
477    // thread tries to use the IO thread (or another thread) that is no longer
478    // valid.
479    // This isn't a valid assumption for Mac OS, as it stays running after
480    // the last browser has closed. The Mac equivalent is in its app
481    // controller.
482    TabRestoreServiceFactory::ResetForProfile(profile_);
483  }
484#endif
485
486  profile_pref_registrar_.RemoveAll();
487
488  encoding_auto_detect_.Destroy();
489
490  // Destroy BrowserExtensionWindowController before the incognito profile
491  // is destroyed to make sure the chrome.windows.onRemoved event is sent.
492  extension_window_controller_.reset();
493
494  // Destroy BrowserInstantController before the incongnito profile is destroyed
495  // because the InstantController destructor depends on this profile.
496  instant_controller_.reset();
497
498  if (profile_->IsOffTheRecord() &&
499      !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
500    // An incognito profile is no longer needed, this indirectly frees
501    // its cache and cookies once it gets destroyed at the appropriate time.
502    ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
503  }
504
505  // There may be pending file dialogs, we need to tell them that we've gone
506  // away so they don't try and call back to us.
507  if (select_file_dialog_.get())
508    select_file_dialog_->ListenerDestroyed();
509}
510
511///////////////////////////////////////////////////////////////////////////////
512// Getters & Setters
513
514FindBarController* Browser::GetFindBarController() {
515  if (!find_bar_controller_.get()) {
516    FindBar* find_bar = window_->CreateFindBar();
517    find_bar_controller_.reset(new FindBarController(find_bar));
518    find_bar->SetFindBarController(find_bar_controller_.get());
519    find_bar_controller_->ChangeWebContents(
520        tab_strip_model_->GetActiveWebContents());
521    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
522  }
523  return find_bar_controller_.get();
524}
525
526bool Browser::HasFindBarController() const {
527  return find_bar_controller_.get() != NULL;
528}
529
530bool Browser::is_app() const {
531  return !app_name_.empty();
532}
533
534bool Browser::is_devtools() const {
535  return app_name_ == DevToolsWindow::kDevToolsApp;
536}
537
538///////////////////////////////////////////////////////////////////////////////
539// Browser, State Storage and Retrieval for UI:
540
541gfx::Image Browser::GetCurrentPageIcon() const {
542  WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
543  // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
544  // window during the window's creation (before tabs have been added).
545  FaviconTabHelper* favicon_tab_helper =
546      web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
547  return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
548}
549
550string16 Browser::GetWindowTitleForCurrentTab() const {
551  WebContents* contents = tab_strip_model_->GetActiveWebContents();
552  string16 title;
553
554  // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
555  // window during the window's creation (before tabs have been added).
556  if (contents) {
557    title = contents->GetTitle();
558    FormatTitleForDisplay(&title);
559  }
560  if (title.empty())
561    title = CoreTabHelper::GetDefaultTitle();
562
563#if defined(OS_MACOSX)
564  // On Mac, we don't want to suffix the page title with
565  // the application name.
566  return title;
567#elif defined(USE_ASH)
568  // On Ash, we don't want to suffix the page title with the application name,
569  // but on Windows, where USE_ASH can also be true, we still want the prefix
570  // on desktop.
571  if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
572    return title;
573#endif
574  // Don't append the app name to window titles on app frames and app popups
575  return is_app() ?
576      title :
577      l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
578}
579
580// static
581void Browser::FormatTitleForDisplay(string16* title) {
582  size_t current_index = 0;
583  size_t match_index;
584  while ((match_index = title->find(L'\n', current_index)) != string16::npos) {
585    title->replace(match_index, 1, string16());
586    current_index = match_index;
587  }
588}
589
590///////////////////////////////////////////////////////////////////////////////
591// Browser, OnBeforeUnload handling:
592
593bool Browser::ShouldCloseWindow() {
594  if (!CanCloseWithInProgressDownloads())
595    return false;
596
597  if (IsFastTabUnloadEnabled())
598    return fast_unload_controller_->ShouldCloseWindow();
599  return unload_controller_->ShouldCloseWindow();
600}
601
602bool Browser::HasCompletedUnloadProcessing() const {
603  DCHECK(IsFastTabUnloadEnabled());
604  return fast_unload_controller_->HasCompletedUnloadProcessing();
605}
606
607bool Browser::IsAttemptingToCloseBrowser() const {
608  if (IsFastTabUnloadEnabled())
609    return fast_unload_controller_->is_attempting_to_close_browser();
610  return unload_controller_->is_attempting_to_close_browser();
611}
612
613void Browser::OnWindowClosing() {
614  if (!ShouldCloseWindow())
615    return;
616
617  // Application should shutdown on last window close if the user is explicitly
618  // trying to quit, or if there is nothing keeping the browser alive (such as
619  // AppController on the Mac, or BackgroundContentsService for background
620  // pages).
621  bool should_quit_if_last_browser =
622      browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
623
624  if (should_quit_if_last_browser &&
625      BrowserList::GetInstance(host_desktop_type_)->size() == 1) {
626    browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
627  }
628
629  // Don't use GetForProfileIfExisting here, we want to force creation of the
630  // session service so that user can restore what was open.
631  SessionService* session_service =
632      SessionServiceFactory::GetForProfile(profile());
633  if (session_service)
634    session_service->WindowClosing(session_id());
635
636  TabRestoreService* tab_restore_service =
637      TabRestoreServiceFactory::GetForProfile(profile());
638
639#if defined(USE_AURA)
640  if (tab_restore_service && is_app())
641    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
642#endif
643
644  if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
645    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
646
647  // TODO(sky): convert session/tab restore to use notification.
648  content::NotificationService::current()->Notify(
649      chrome::NOTIFICATION_BROWSER_CLOSING,
650      content::Source<Browser>(this),
651      content::NotificationService::NoDetails());
652
653  if (!IsFastTabUnloadEnabled())
654    tab_strip_model_->CloseAllTabs();
655}
656
657////////////////////////////////////////////////////////////////////////////////
658// In-progress download termination handling:
659
660void Browser::InProgressDownloadResponse(bool cancel_downloads) {
661  if (cancel_downloads) {
662    cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
663    chrome::CloseWindow(this);
664    return;
665  }
666
667  // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
668  // close again we'll show the warning again.
669  cancel_download_confirmation_state_ = NOT_PROMPTED;
670
671  // Show the download page so the user can figure-out what downloads are still
672  // in-progress.
673  chrome::ShowDownloads(this);
674}
675
676Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
677    int* num_downloads_blocking) const {
678  DCHECK(num_downloads_blocking);
679  *num_downloads_blocking = 0;
680
681  if (IsAttemptingToCloseBrowser())
682    return DOWNLOAD_CLOSE_OK;
683
684  // If we're not running a full browser process with a profile manager
685  // (testing), it's ok to close the browser.
686  if (!g_browser_process->profile_manager())
687    return DOWNLOAD_CLOSE_OK;
688
689  int total_download_count = DownloadService::DownloadCountAllProfiles();
690  if (total_download_count == 0)
691    return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
692
693  // Figure out how many windows are open total, and associated with this
694  // profile, that are relevant for the ok-to-close decision.
695  int profile_window_count = 0;
696  int total_window_count = 0;
697  for (chrome::BrowserIterator it; !it.done(); it.Next()) {
698    // Don't count this browser window or any other in the process of closing.
699    Browser* const browser = *it;
700    // Window closing may be delayed, and windows that are in the process of
701    // closing don't count against our totals.
702    if (browser == this || browser->IsAttemptingToCloseBrowser())
703      continue;
704
705    if (it->profile() == profile())
706      profile_window_count++;
707    total_window_count++;
708  }
709
710  // If there aren't any other windows, we're at browser shutdown,
711  // which would cancel all current downloads.
712  if (total_window_count == 0) {
713    *num_downloads_blocking = total_download_count;
714    return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
715  }
716
717  // If there aren't any other windows on our profile, and we're an incognito
718  // profile, and there are downloads associated with that profile,
719  // those downloads would be cancelled by our window (-> profile) close.
720  DownloadService* download_service =
721      DownloadServiceFactory::GetForProfile(profile());
722  if (profile_window_count == 0 && download_service->DownloadCount() > 0 &&
723      profile()->IsOffTheRecord()) {
724    *num_downloads_blocking = download_service->DownloadCount();
725    return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
726  }
727
728  // Those are the only conditions under which we will block shutdown.
729  return DOWNLOAD_CLOSE_OK;
730}
731
732////////////////////////////////////////////////////////////////////////////////
733// Browser, Tab adding/showing functions:
734
735void Browser::WindowFullscreenStateChanged() {
736  fullscreen_controller_->WindowFullscreenStateChanged();
737  command_controller_->FullscreenStateChanged();
738  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
739}
740
741void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
742  // When the current tab's SSL state changes, we need to update the URL
743  // bar to reflect the new state.
744  DCHECK(web_contents);
745  if (tab_strip_model_->GetActiveWebContents() == web_contents)
746    UpdateToolbar(false);
747}
748
749///////////////////////////////////////////////////////////////////////////////
750// Browser, Assorted browser commands:
751
752void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
753  fullscreen_controller_->ToggleFullscreenModeWithExtension(extension_url);
754}
755
756bool Browser::SupportsWindowFeature(WindowFeature feature) const {
757  return SupportsWindowFeatureImpl(feature, true);
758}
759
760bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
761  return SupportsWindowFeatureImpl(feature, false);
762}
763
764void Browser::ToggleEncodingAutoDetect() {
765  content::RecordAction(UserMetricsAction("AutoDetectChange"));
766  encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
767  // If "auto detect" is turned on, then any current override encoding
768  // is cleared. This also implicitly performs a reload.
769  // OTOH, if "auto detect" is turned off, we don't change the currently
770  // active encoding.
771  if (encoding_auto_detect_.GetValue()) {
772    WebContents* contents = tab_strip_model_->GetActiveWebContents();
773    if (contents)
774      contents->ResetOverrideEncoding();
775  }
776}
777
778void Browser::OverrideEncoding(int encoding_id) {
779  content::RecordAction(UserMetricsAction("OverrideEncoding"));
780  const std::string selected_encoding =
781      CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
782  WebContents* contents = tab_strip_model_->GetActiveWebContents();
783  if (!selected_encoding.empty() && contents)
784     contents->SetOverrideEncoding(selected_encoding);
785  // Update the list of recently selected encodings.
786  std::string new_selected_encoding_list;
787  if (CharacterEncoding::UpdateRecentlySelectedEncoding(
788        profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
789        encoding_id,
790        &new_selected_encoding_list)) {
791    profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
792                                    new_selected_encoding_list);
793  }
794}
795
796void Browser::OpenFile() {
797  content::RecordAction(UserMetricsAction("OpenFile"));
798  select_file_dialog_ = ui::SelectFileDialog::Create(
799      this, new ChromeSelectFilePolicy(
800          tab_strip_model_->GetActiveWebContents()));
801
802  const base::FilePath directory = profile_->last_selected_directory();
803
804  // TODO(beng): figure out how to juggle this.
805  gfx::NativeWindow parent_window = window_->GetNativeWindow();
806  ui::SelectFileDialog::FileTypeInfo file_types;
807  file_types.support_drive = true;
808  select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
809                                  string16(),
810                                  directory,
811                                  &file_types,
812                                  0,
813                                  base::FilePath::StringType(),
814                                  parent_window,
815                                  NULL);
816}
817
818void Browser::UpdateDownloadShelfVisibility(bool visible) {
819  if (GetStatusBubble())
820    GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
821}
822
823///////////////////////////////////////////////////////////////////////////////
824
825// static
826bool Browser::RunUnloadEventsHelper(WebContents* contents) {
827  // If the WebContents is not connected yet, then there's no unload
828  // handler we can fire even if the WebContents has an unload listener.
829  // One case where we hit this is in a tab that has an infinite loop
830  // before load.
831  if (contents->NeedToFireBeforeUnload()) {
832    // If the page has unload listeners, then we tell the renderer to fire
833    // them. Once they have fired, we'll get a message back saying whether
834    // to proceed closing the page or not, which sends us back to this method
835    // with the NeedToFireBeforeUnload bit cleared.
836    contents->GetRenderViewHost()->FirePageBeforeUnload(false);
837    return true;
838  }
839  return false;
840}
841
842// static
843void Browser::JSOutOfMemoryHelper(WebContents* web_contents) {
844  InfoBarService* infobar_service =
845      InfoBarService::FromWebContents(web_contents);
846  if (!infobar_service)
847    return;
848  SimpleAlertInfoBarDelegate::Create(
849      infobar_service, InfoBarDelegate::kNoIconID,
850      l10n_util::GetStringUTF16(IDS_JS_OUT_OF_MEMORY_PROMPT), true);
851}
852
853// static
854void Browser::RegisterProtocolHandlerHelper(WebContents* web_contents,
855                                            const std::string& protocol,
856                                            const GURL& url,
857                                            const string16& title,
858                                            bool user_gesture,
859                                            BrowserWindow* window) {
860  Profile* profile =
861      Profile::FromBrowserContext(web_contents->GetBrowserContext());
862  if (profile->IsOffTheRecord())
863    return;
864
865  ProtocolHandler handler =
866      ProtocolHandler::CreateProtocolHandler(protocol, url, title);
867
868  ProtocolHandlerRegistry* registry =
869      ProtocolHandlerRegistryFactory::GetForProfile(profile);
870  if (registry->SilentlyHandleRegisterHandlerRequest(handler))
871    return;
872
873  TabSpecificContentSettings* tab_content_settings =
874      TabSpecificContentSettings::FromWebContents(web_contents);
875  if (!user_gesture && window) {
876    tab_content_settings->set_pending_protocol_handler(handler);
877    tab_content_settings->set_previous_protocol_handler(
878        registry->GetHandlerFor(handler.protocol()));
879    window->GetLocationBar()->UpdateContentSettingsIcons();
880    return;
881  }
882
883  // Make sure content-setting icon is turned off in case the page does
884  // ungestured and gestured RPH calls.
885  if (window) {
886    tab_content_settings->ClearPendingProtocolHandler();
887    window->GetLocationBar()->UpdateContentSettingsIcons();
888  }
889
890  RegisterProtocolHandlerInfoBarDelegate::Create(
891      InfoBarService::FromWebContents(web_contents), registry, handler);
892}
893
894// static
895void Browser::FindReplyHelper(WebContents* web_contents,
896                              int request_id,
897                              int number_of_matches,
898                              const gfx::Rect& selection_rect,
899                              int active_match_ordinal,
900                              bool final_update) {
901  FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
902  if (!find_tab_helper)
903    return;
904
905  find_tab_helper->HandleFindReply(request_id,
906                                   number_of_matches,
907                                   selection_rect,
908                                   active_match_ordinal,
909                                   final_update);
910}
911
912void Browser::UpdateUIForNavigationInTab(WebContents* contents,
913                                         content::PageTransition transition,
914                                         bool user_initiated) {
915  tab_strip_model_->TabNavigating(contents, transition);
916
917  bool contents_is_selected =
918      contents == tab_strip_model_->GetActiveWebContents();
919  if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
920    // Forcibly reset the location bar if the url is going to change in the
921    // current tab, since otherwise it won't discard any ongoing user edits,
922    // since it doesn't realize this is a user-initiated action.
923    window()->GetLocationBar()->Revert();
924  }
925
926  if (GetStatusBubble())
927    GetStatusBubble()->Hide();
928
929  // Update the location bar. This is synchronous. We specifically don't
930  // update the load state since the load hasn't started yet and updating it
931  // will put it out of sync with the actual state like whether we're
932  // displaying a favicon, which controls the throbber. If we updated it here,
933  // the throbber will show the default favicon for a split second when
934  // navigating away from the new tab page.
935  ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
936
937  if (contents_is_selected)
938    contents->GetView()->SetInitialFocus();
939}
940
941///////////////////////////////////////////////////////////////////////////////
942// Browser, PageNavigator implementation:
943
944WebContents* Browser::OpenURL(const OpenURLParams& params) {
945  return OpenURLFromTab(NULL, params);
946}
947
948///////////////////////////////////////////////////////////////////////////////
949// Browser, TabStripModelObserver implementation:
950
951void Browser::TabInsertedAt(WebContents* contents,
952                            int index,
953                            bool foreground) {
954  SetAsDelegate(contents, this);
955  SessionTabHelper* session_tab_helper =
956      SessionTabHelper::FromWebContents(contents);
957  session_tab_helper->SetWindowID(session_id());
958
959  content::NotificationService::current()->Notify(
960      chrome::NOTIFICATION_TAB_PARENTED,
961      content::Source<content::WebContents>(contents),
962      content::NotificationService::NoDetails());
963
964  SyncHistoryWithTabs(index);
965
966  // Make sure the loading state is updated correctly, otherwise the throbber
967  // won't start if the page is loading.
968  LoadingStateChanged(contents);
969
970  interstitial_observers_.push_back(new InterstitialObserver(this, contents));
971
972  SessionService* session_service =
973      SessionServiceFactory::GetForProfile(profile_);
974  if (session_service) {
975    session_service->TabInserted(contents);
976    int new_active_index = tab_strip_model_->active_index();
977    if (index < new_active_index)
978      session_service->SetSelectedTabInWindow(session_id(),
979                                              new_active_index);
980  }
981}
982
983void Browser::TabClosingAt(TabStripModel* tab_strip_model,
984                           WebContents* contents,
985                           int index) {
986  fullscreen_controller_->OnTabClosing(contents);
987  SessionService* session_service =
988      SessionServiceFactory::GetForProfile(profile_);
989  if (session_service)
990    session_service->TabClosing(contents);
991  content::NotificationService::current()->Notify(
992      chrome::NOTIFICATION_TAB_CLOSING,
993      content::Source<NavigationController>(&contents->GetController()),
994      content::NotificationService::NoDetails());
995
996  // Sever the WebContents' connection back to us.
997  SetAsDelegate(contents, NULL);
998}
999
1000void Browser::TabDetachedAt(WebContents* contents, int index) {
1001  // TabDetachedAt is called before TabStripModel has updated the
1002  // active index.
1003  int old_active_index = tab_strip_model_->active_index();
1004  if (index < old_active_index && !tab_strip_model_->closing_all()) {
1005    SessionService* session_service =
1006        SessionServiceFactory::GetForProfileIfExisting(profile_);
1007    if (session_service)
1008      session_service->SetSelectedTabInWindow(session_id(),
1009                                              old_active_index - 1);
1010  }
1011  TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
1012}
1013
1014void Browser::TabDeactivated(WebContents* contents) {
1015  fullscreen_controller_->OnTabDeactivated(contents);
1016  search_delegate_->OnTabDeactivated(contents);
1017
1018  // Save what the user's currently typing, so it can be restored when we
1019  // switch back to this tab.
1020  window_->GetLocationBar()->SaveStateToContents(contents);
1021
1022  if (instant_controller_)
1023    instant_controller_->TabDeactivated(contents);
1024}
1025
1026void Browser::ActiveTabChanged(WebContents* old_contents,
1027                               WebContents* new_contents,
1028                               int index,
1029                               int reason) {
1030  content::RecordAction(UserMetricsAction("ActiveTabChanged"));
1031
1032  // Discarded tabs always get reloaded.
1033  if (tab_strip_model_->IsTabDiscarded(index)) {
1034    LOG(WARNING) << "Reloading discarded tab at " << index;
1035    static int reload_count = 0;
1036    UMA_HISTOGRAM_CUSTOM_COUNTS(
1037        "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1038    chrome::Reload(this, CURRENT_TAB);
1039  }
1040
1041  // If we have any update pending, do it now.
1042  if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1043    ProcessPendingUIUpdates();
1044
1045  // Propagate the profile to the location bar.
1046  UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1047
1048  // Propagate tab state to toolbar, tab-strip, etc.
1049  UpdateSearchState(new_contents);
1050
1051  // Update reload/stop state.
1052  command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1053
1054  // Update commands to reflect current state.
1055  command_controller_->TabStateChanged();
1056
1057  // Reset the status bubble.
1058  StatusBubble* status_bubble = GetStatusBubble();
1059  if (status_bubble) {
1060    status_bubble->Hide();
1061
1062    // Show the loading state (if any).
1063    status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1064        tab_strip_model_->GetActiveWebContents())->GetStatusText());
1065  }
1066
1067  if (HasFindBarController()) {
1068    find_bar_controller_->ChangeWebContents(new_contents);
1069    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1070  }
1071
1072  // Update sessions. Don't force creation of sessions. If sessions doesn't
1073  // exist, the change will be picked up by sessions when created.
1074  SessionService* session_service =
1075      SessionServiceFactory::GetForProfileIfExisting(profile_);
1076  if (session_service && !tab_strip_model_->closing_all()) {
1077    session_service->SetSelectedTabInWindow(session_id(),
1078                                            tab_strip_model_->active_index());
1079  }
1080
1081  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1082
1083  // This needs to be called after UpdateSearchState().
1084  if (instant_controller_)
1085    instant_controller_->ActiveTabChanged();
1086}
1087
1088void Browser::TabMoved(WebContents* contents,
1089                       int from_index,
1090                       int to_index) {
1091  DCHECK(from_index >= 0 && to_index >= 0);
1092  // Notify the history service.
1093  SyncHistoryWithTabs(std::min(from_index, to_index));
1094}
1095
1096void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1097                            WebContents* old_contents,
1098                            WebContents* new_contents,
1099                            int index) {
1100  TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1101  fullscreen_controller_->OnTabClosing(old_contents);
1102  SessionService* session_service =
1103      SessionServiceFactory::GetForProfile(profile_);
1104  if (session_service)
1105    session_service->TabClosing(old_contents);
1106  TabInsertedAt(new_contents,
1107                index,
1108                (index == tab_strip_model_->active_index()));
1109
1110  int entry_count = new_contents->GetController().GetEntryCount();
1111  if (entry_count > 0) {
1112    // Send out notification so that observers are updated appropriately.
1113    new_contents->GetController().NotifyEntryChanged(
1114        new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1115        entry_count - 1);
1116  }
1117
1118  if (session_service) {
1119    // The new_contents may end up with a different navigation stack. Force
1120    // the session service to update itself.
1121    session_service->TabRestored(new_contents,
1122                                 tab_strip_model_->IsTabPinned(index));
1123  }
1124}
1125
1126void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1127  SessionService* session_service =
1128      SessionServiceFactory::GetForProfileIfExisting(profile());
1129  if (session_service) {
1130    SessionTabHelper* session_tab_helper =
1131        SessionTabHelper::FromWebContents(contents);
1132    session_service->SetPinnedState(session_id(),
1133                                    session_tab_helper->session_id(),
1134                                    tab_strip_model_->IsTabPinned(index));
1135  }
1136}
1137
1138void Browser::TabStripEmpty() {
1139  // Close the frame after we return to the message loop (not immediately,
1140  // otherwise it will destroy this object before the stack has a chance to
1141  // cleanly unwind.)
1142  // Note: This will be called several times if TabStripEmpty is called several
1143  //       times. This is because it does not close the window if tabs are
1144  //       still present.
1145  base::MessageLoop::current()->PostTask(
1146      FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1147
1148  // Instant may have visible WebContents that need to be detached before the
1149  // window system closes.
1150  instant_controller_.reset();
1151}
1152
1153bool Browser::CanOverscrollContent() const {
1154#if defined(USE_AURA)
1155  bool overscroll_enabled = CommandLine::ForCurrentProcess()->
1156      GetSwitchValueASCII(switches::kOverscrollHistoryNavigation) != "0";
1157  if (!overscroll_enabled)
1158    return false;
1159  if (is_app() || is_devtools() || !is_type_tabbed())
1160    return false;
1161
1162  // The detached bookmark bar has appearance of floating above the
1163  // web-contents. This does not play nicely with overscroll navigation
1164  // gestures. So disable overscroll navigation when the bookmark bar is in the
1165  // detached state.
1166  if (bookmark_bar_state_ == BookmarkBar::DETACHED)
1167    return false;
1168  return true;
1169#else
1170  return false;
1171#endif
1172}
1173
1174bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1175                                     const NativeWebKeyboardEvent& event,
1176                                     bool* is_keyboard_shortcut) {
1177  // Escape exits tabbed fullscreen mode.
1178  // TODO(koz): Write a test for this http://crbug.com/100441.
1179  if (event.windowsKeyCode == 27 &&
1180      fullscreen_controller_->HandleUserPressedEscape()) {
1181    return true;
1182  }
1183  return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1184}
1185
1186void Browser::HandleKeyboardEvent(content::WebContents* source,
1187                                  const NativeWebKeyboardEvent& event) {
1188  window()->HandleKeyboardEvent(event);
1189}
1190
1191bool Browser::TabsNeedBeforeUnloadFired() {
1192  if (IsFastTabUnloadEnabled())
1193    return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1194  return unload_controller_->TabsNeedBeforeUnloadFired();
1195}
1196
1197bool Browser::IsMouseLocked() const {
1198  return fullscreen_controller_->IsMouseLocked();
1199}
1200
1201void Browser::OnWindowDidShow() {
1202  if (window_has_shown_)
1203    return;
1204  window_has_shown_ = true;
1205
1206// CurrentProcessInfo::CreationTime() is currently only implemented on Mac and
1207// Windows.
1208#if defined(OS_MACOSX) || defined(OS_WIN)
1209  // Measure the latency from startup till the first browser window becomes
1210  // visible.
1211  static bool is_first_browser_window = true;
1212  if (is_first_browser_window &&
1213      !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1214    is_first_browser_window = false;
1215    const base::Time* process_creation_time =
1216        base::CurrentProcessInfo::CreationTime();
1217
1218    if (process_creation_time) {
1219      UMA_HISTOGRAM_LONG_TIMES(
1220          "Startup.BrowserWindowDisplay",
1221          base::Time::Now() - *process_creation_time);
1222    }
1223  }
1224#endif  // defined(OS_MACOSX) || defined(OS_WIN)
1225
1226  // Nothing to do for non-tabbed windows.
1227  if (!is_type_tabbed())
1228    return;
1229
1230  // Show any pending global error bubble.
1231  GlobalErrorService* service =
1232      GlobalErrorServiceFactory::GetForProfile(profile());
1233  GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1234  if (error)
1235    error->ShowBubbleView(this);
1236}
1237
1238void Browser::ShowFirstRunBubble() {
1239  window()->GetLocationBar()->ShowFirstRunBubble();
1240}
1241
1242void Browser::ShowDownload(content::DownloadItem* download) {
1243  if (!window())
1244    return;
1245
1246  // If the download occurs in a new tab, and it's not a save page
1247  // download (started before initial navigation completed) close it.
1248  WebContents* source = download->GetWebContents();
1249  if (source && source->GetController().IsInitialNavigation() &&
1250      tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1251    CloseContents(source);
1252  }
1253
1254  // Some (app downloads) are not supposed to appear on the shelf.
1255  if (!DownloadItemModel(download).ShouldShowInShelf())
1256    return;
1257
1258  // GetDownloadShelf creates the download shelf if it was not yet created.
1259  DownloadShelf* shelf = window()->GetDownloadShelf();
1260  shelf->AddDownload(download);
1261}
1262
1263///////////////////////////////////////////////////////////////////////////////
1264// Browser, content::WebContentsDelegate implementation:
1265
1266WebContents* Browser::OpenURLFromTab(WebContents* source,
1267                                     const OpenURLParams& params) {
1268  chrome::NavigateParams nav_params(this, params.url, params.transition);
1269  FillNavigateParamsFromOpenURLParams(&nav_params, params);
1270  nav_params.source_contents = source;
1271  nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1272  nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1273  nav_params.user_gesture = params.user_gesture;
1274
1275  BlockedContentTabHelper* blocked_content_helper = NULL;
1276  if (source)
1277    blocked_content_helper = BlockedContentTabHelper::FromWebContents(source);
1278
1279  if (CommandLine::ForCurrentProcess()->HasSwitch(
1280          switches::kEnableBetterPopupBlocking) &&
1281      blocked_content_helper) {
1282
1283    if (blocked_content_helper->all_contents_blocked()) {
1284      // TODO(jochen): store information about the blocked pop-up in the
1285      // helper.
1286      return NULL;
1287    }
1288
1289    if ((params.disposition == NEW_POPUP ||
1290         params.disposition == NEW_FOREGROUND_TAB ||
1291         params.disposition == NEW_BACKGROUND_TAB) &&
1292        !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1293                                    switches::kDisablePopupBlocking)) {
1294      return NULL;
1295    }
1296  }
1297
1298  chrome::Navigate(&nav_params);
1299
1300  return nav_params.target_contents;
1301}
1302
1303void Browser::NavigationStateChanged(const WebContents* source,
1304                                     unsigned changed_flags) {
1305  // Only update the UI when something visible has changed.
1306  if (changed_flags)
1307    ScheduleUIUpdate(source, changed_flags);
1308
1309  // We can synchronously update commands since they will only change once per
1310  // navigation, so we don't have to worry about flickering. We do, however,
1311  // need to update the command state early on load to always present usable
1312  // actions in the face of slow-to-commit pages.
1313  if (changed_flags & (content::INVALIDATE_TYPE_URL |
1314                       content::INVALIDATE_TYPE_LOAD))
1315    command_controller_->TabStateChanged();
1316}
1317
1318void Browser::AddNewContents(WebContents* source,
1319                             WebContents* new_contents,
1320                             WindowOpenDisposition disposition,
1321                             const gfx::Rect& initial_pos,
1322                             bool user_gesture,
1323                             bool* was_blocked) {
1324  chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1325                         user_gesture, was_blocked);
1326}
1327
1328void Browser::ActivateContents(WebContents* contents) {
1329  tab_strip_model_->ActivateTabAt(
1330      tab_strip_model_->GetIndexOfWebContents(contents), false);
1331  window_->Activate();
1332}
1333
1334void Browser::DeactivateContents(WebContents* contents) {
1335  window_->Deactivate();
1336}
1337
1338void Browser::LoadingStateChanged(WebContents* source) {
1339  window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1340  window_->UpdateTitleBar();
1341
1342  WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1343  if (source == selected_contents) {
1344    bool is_loading = source->IsLoading();
1345    command_controller_->LoadingStateChanged(is_loading, false);
1346    if (GetStatusBubble()) {
1347      GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1348          tab_strip_model_->GetActiveWebContents())->GetStatusText());
1349    }
1350  }
1351}
1352
1353void Browser::CloseContents(WebContents* source) {
1354  bool can_close_contents;
1355  if (IsFastTabUnloadEnabled())
1356    can_close_contents = fast_unload_controller_->CanCloseContents(source);
1357  else
1358    can_close_contents = unload_controller_->CanCloseContents(source);
1359
1360  if (can_close_contents)
1361    chrome::CloseWebContents(this, source, true);
1362}
1363
1364void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1365  if (!IsPopupOrPanel(source)) {
1366    NOTREACHED() << "moving invalid browser type";
1367    return;
1368  }
1369  window_->SetBounds(pos);
1370}
1371
1372bool Browser::IsPopupOrPanel(const WebContents* source) const {
1373  return is_type_popup();
1374}
1375
1376void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1377                              const GURL& url) {
1378  if (!GetStatusBubble())
1379    return;
1380
1381  if (source == tab_strip_model_->GetActiveWebContents()) {
1382    PrefService* prefs = profile_->GetPrefs();
1383    GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1384  }
1385}
1386
1387void Browser::ContentsMouseEvent(
1388    WebContents* source, const gfx::Point& location, bool motion) {
1389  if (!GetStatusBubble())
1390    return;
1391
1392  if (source == tab_strip_model_->GetActiveWebContents()) {
1393    GetStatusBubble()->MouseMoved(location, !motion);
1394    if (!motion)
1395      GetStatusBubble()->SetURL(GURL(), std::string());
1396  }
1397}
1398
1399void Browser::ContentsZoomChange(bool zoom_in) {
1400  chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1401}
1402
1403void Browser::WebContentsFocused(WebContents* contents) {
1404  window_->WebContentsFocused(contents);
1405}
1406
1407bool Browser::TakeFocus(content::WebContents* source,
1408                        bool reverse) {
1409  content::NotificationService::current()->Notify(
1410      chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1411      content::Source<Browser>(this),
1412      content::NotificationService::NoDetails());
1413  return false;
1414}
1415
1416gfx::Rect Browser::GetRootWindowResizerRect() const {
1417  return window_->GetRootWindowResizerRect();
1418}
1419
1420void Browser::BeforeUnloadFired(WebContents* web_contents,
1421                                bool proceed,
1422                                bool* proceed_to_fire_unload) {
1423  if (IsFastTabUnloadEnabled()) {
1424    *proceed_to_fire_unload =
1425        fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1426  } else {
1427    *proceed_to_fire_unload =
1428        unload_controller_->BeforeUnloadFired(web_contents, proceed);
1429  }
1430}
1431
1432bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1433  const content::NavigationEntry* entry =
1434      source->GetController().GetActiveEntry();
1435  if (entry) {
1436    GURL url = entry->GetURL();
1437    GURL virtual_url = entry->GetVirtualURL();
1438    if ((url.SchemeIs(chrome::kChromeUIScheme) &&
1439        url.host() == chrome::kChromeUINewTabHost) ||
1440        (virtual_url.SchemeIs(chrome::kChromeUIScheme) &&
1441        virtual_url.host() == chrome::kChromeUINewTabHost)) {
1442      return true;
1443    }
1444  }
1445
1446  return chrome::NavEntryIsInstantNTP(source, entry);
1447}
1448
1449void Browser::SetFocusToLocationBar(bool select_all) {
1450  // Two differences between this and FocusLocationBar():
1451  // (1) This doesn't get recorded in user metrics, since it's called
1452  //     internally.
1453  // (2) This checks whether the location bar can be focused, and if not, clears
1454  //     the focus.  FocusLocationBar() is only reached when the location bar is
1455  //     focusable, but this may be reached at other times, e.g. while in
1456  //     fullscreen mode, where we need to leave focus in a consistent state.
1457  window_->SetFocusToLocationBar(select_all);
1458}
1459
1460void Browser::RenderWidgetShowing() {
1461  window_->DisableInactiveFrame();
1462}
1463
1464int Browser::GetExtraRenderViewHeight() const {
1465  return window_->GetExtraRenderViewHeight();
1466}
1467
1468void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1469  DCHECK(source);
1470  chrome::ViewSource(this, source);
1471}
1472
1473void Browser::ViewSourceForFrame(WebContents* source,
1474                                 const GURL& frame_url,
1475                                 const content::PageState& frame_page_state) {
1476  DCHECK(source);
1477  chrome::ViewSource(this, source, frame_url, frame_page_state);
1478}
1479
1480void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1481  TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1482                                source);
1483}
1484
1485bool Browser::ShouldCreateWebContents(
1486    WebContents* web_contents,
1487    int route_id,
1488    WindowContainerType window_container_type,
1489    const string16& frame_name,
1490    const GURL& target_url,
1491    WindowOpenDisposition disposition,
1492    bool user_gesture) {
1493  if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1494    // If a BackgroundContents is created, suppress the normal WebContents.
1495    return !MaybeCreateBackgroundContents(
1496        route_id, web_contents, frame_name, target_url);
1497  }
1498
1499  if (!CommandLine::ForCurrentProcess()->HasSwitch(
1500          switches::kEnableBetterPopupBlocking)) {
1501    return true;
1502  }
1503
1504  BlockedContentTabHelper* blocked_content_helper =
1505      BlockedContentTabHelper::FromWebContents(web_contents);
1506  if (!blocked_content_helper)
1507    return true;
1508
1509  if (blocked_content_helper->all_contents_blocked()) {
1510    // TODO(jochen): store information about the blocked pop-up in the helper.
1511    return false;
1512  }
1513
1514  if ((disposition == NEW_POPUP || disposition == NEW_FOREGROUND_TAB ||
1515       disposition == NEW_BACKGROUND_TAB) && !user_gesture &&
1516      !CommandLine::ForCurrentProcess()->HasSwitch(
1517          switches::kDisablePopupBlocking)) {
1518    return false;
1519  }
1520
1521  return true;
1522}
1523
1524void Browser::WebContentsCreated(WebContents* source_contents,
1525                                 int64 source_frame_id,
1526                                 const string16& frame_name,
1527                                 const GURL& target_url,
1528                                 WebContents* new_contents) {
1529  // Adopt the WebContents now, so all observers are in place, as the network
1530  // requests for its initial navigation will start immediately. The WebContents
1531  // will later be inserted into this browser using Browser::Navigate via
1532  // AddNewContents.
1533  BrowserTabContents::AttachTabHelpers(new_contents);
1534
1535  // Notify.
1536  RetargetingDetails details;
1537  details.source_web_contents = source_contents;
1538  details.source_frame_id = source_frame_id;
1539  details.target_url = target_url;
1540  details.target_web_contents = new_contents;
1541  details.not_yet_in_tabstrip = true;
1542  content::NotificationService::current()->Notify(
1543      chrome::NOTIFICATION_RETARGETING,
1544      content::Source<Profile>(profile_),
1545      content::Details<RetargetingDetails>(&details));
1546}
1547
1548void Browser::ContentRestrictionsChanged(WebContents* source) {
1549  command_controller_->ContentRestrictionsChanged();
1550}
1551
1552void Browser::RendererUnresponsive(WebContents* source) {
1553  // Ignore hangs if a tab is blocked.
1554  int index = tab_strip_model_->GetIndexOfWebContents(source);
1555  DCHECK_NE(TabStripModel::kNoTab, index);
1556  if (tab_strip_model_->IsTabBlocked(index))
1557    return;
1558
1559  chrome::ShowHungRendererDialog(source);
1560}
1561
1562void Browser::RendererResponsive(WebContents* source) {
1563  chrome::HideHungRendererDialog(source);
1564}
1565
1566void Browser::WorkerCrashed(WebContents* source) {
1567  SimpleAlertInfoBarDelegate::Create(
1568      InfoBarService::FromWebContents(source), InfoBarDelegate::kNoIconID,
1569      l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1570}
1571
1572void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1573  if (web_contents == tab_strip_model_->GetActiveWebContents())
1574    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1575}
1576
1577void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1578  if (web_contents == tab_strip_model_->GetActiveWebContents())
1579    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1580}
1581
1582content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1583  return GetJavaScriptDialogManagerInstance();
1584}
1585
1586content::ColorChooser* Browser::OpenColorChooser(WebContents* web_contents,
1587                                                 SkColor initial_color) {
1588  return chrome::ShowColorChooser(web_contents, initial_color);
1589}
1590
1591void Browser::RunFileChooser(WebContents* web_contents,
1592                             const content::FileChooserParams& params) {
1593  FileSelectHelper::RunFileChooser(web_contents, params);
1594}
1595
1596void Browser::EnumerateDirectory(WebContents* web_contents,
1597                                 int request_id,
1598                                 const base::FilePath& path) {
1599  FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1600}
1601
1602void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1603                                         bool enter_fullscreen) {
1604  fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1605                                                     enter_fullscreen);
1606}
1607
1608bool Browser::IsFullscreenForTabOrPending(
1609    const WebContents* web_contents) const {
1610  return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1611}
1612
1613void Browser::JSOutOfMemory(WebContents* web_contents) {
1614  JSOutOfMemoryHelper(web_contents);
1615}
1616
1617void Browser::RegisterProtocolHandler(WebContents* web_contents,
1618                                      const std::string& protocol,
1619                                      const GURL& url,
1620                                      const string16& title,
1621                                      bool user_gesture) {
1622  RegisterProtocolHandlerHelper(
1623      web_contents, protocol, url, title, user_gesture, window());
1624}
1625
1626void Browser::UpdatePreferredSize(WebContents* source,
1627                                  const gfx::Size& pref_size) {
1628  window_->UpdatePreferredSize(source, pref_size);
1629}
1630
1631void Browser::ResizeDueToAutoResize(WebContents* source,
1632                                    const gfx::Size& new_size) {
1633  window_->ResizeDueToAutoResize(source, new_size);
1634}
1635
1636void Browser::FindReply(WebContents* web_contents,
1637                        int request_id,
1638                        int number_of_matches,
1639                        const gfx::Rect& selection_rect,
1640                        int active_match_ordinal,
1641                        bool final_update) {
1642  FindReplyHelper(web_contents, request_id, number_of_matches, selection_rect,
1643                  active_match_ordinal, final_update);
1644}
1645
1646void Browser::RequestToLockMouse(WebContents* web_contents,
1647                                 bool user_gesture,
1648                                 bool last_unlocked_by_target) {
1649  fullscreen_controller_->RequestToLockMouse(web_contents,
1650                                             user_gesture,
1651                                             last_unlocked_by_target);
1652}
1653
1654void Browser::LostMouseLock() {
1655  fullscreen_controller_->LostMouseLock();
1656}
1657
1658void Browser::RequestMediaAccessPermission(
1659    content::WebContents* web_contents,
1660    const content::MediaStreamRequest& request,
1661    const content::MediaResponseCallback& callback) {
1662  const extensions::Extension* extension = NULL;
1663  GURL origin(request.security_origin);
1664  if (origin.SchemeIs(extensions::kExtensionScheme)) {
1665    ExtensionService* extensions_service =
1666        extensions::ExtensionSystem::Get(profile_)->extension_service();
1667    extension = extensions_service->extensions()->GetByID(origin.host());
1668    DCHECK(extension);
1669  }
1670
1671  MediaCaptureDevicesDispatcher::GetInstance()->ProcessMediaAccessRequest(
1672      web_contents, request, callback, extension);
1673}
1674
1675bool Browser::RequestPpapiBrokerPermission(
1676    WebContents* web_contents,
1677    const GURL& url,
1678    const base::FilePath& plugin_path,
1679    const base::Callback<void(bool)>& callback) {
1680  PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1681  return true;
1682}
1683
1684///////////////////////////////////////////////////////////////////////////////
1685// Browser, CoreTabHelperDelegate implementation:
1686
1687void Browser::SwapTabContents(content::WebContents* old_contents,
1688                              content::WebContents* new_contents) {
1689  int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1690  DCHECK_NE(TabStripModel::kNoTab, index);
1691  tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1692}
1693
1694bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1695  return chrome::CanReload(this);
1696}
1697
1698bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1699  return chrome::CanSavePage(this);
1700}
1701
1702///////////////////////////////////////////////////////////////////////////////
1703// Browser, SearchEngineTabHelperDelegate implementation:
1704
1705void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1706                                       Profile* profile) {
1707  window()->ConfirmAddSearchProvider(template_url, profile);
1708}
1709
1710///////////////////////////////////////////////////////////////////////////////
1711// Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1712
1713void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1714                                    bool blocked) {
1715  int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1716  if (index == TabStripModel::kNoTab) {
1717    NOTREACHED();
1718    return;
1719  }
1720  tab_strip_model_->SetTabBlocked(index, blocked);
1721  if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1722    web_contents->GetView()->Focus();
1723}
1724
1725web_modal::WebContentsModalDialogHost*
1726Browser::GetWebContentsModalDialogHost() {
1727  return window_->GetWebContentsModalDialogHost();
1728}
1729
1730///////////////////////////////////////////////////////////////////////////////
1731// Browser, BlockedContentTabHelperDelegate implementation:
1732
1733content::WebContents* Browser::GetConstrainingWebContents(
1734    content::WebContents* source) {
1735  return source;
1736}
1737
1738///////////////////////////////////////////////////////////////////////////////
1739// Browser, BookmarkTabHelperDelegate implementation:
1740
1741void Browser::URLStarredChanged(content::WebContents* web_contents,
1742                                bool starred) {
1743  if (web_contents == tab_strip_model_->GetActiveWebContents())
1744    window_->SetStarredState(starred);
1745}
1746
1747///////////////////////////////////////////////////////////////////////////////
1748// Browser, ZoomObserver implementation:
1749
1750void Browser::OnZoomChanged(content::WebContents* source,
1751                            bool can_show_bubble) {
1752  if (source == tab_strip_model_->GetActiveWebContents()) {
1753    // Only show the zoom bubble for zoom changes in the active window.
1754    window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive());
1755  }
1756}
1757
1758///////////////////////////////////////////////////////////////////////////////
1759// Browser, ui::SelectFileDialog::Listener implementation:
1760
1761void Browser::FileSelected(const base::FilePath& path, int index,
1762                           void* params) {
1763  FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1764}
1765
1766void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1767                                        int index,
1768                                        void* params) {
1769  profile_->set_last_selected_directory(file_info.file_path.DirName());
1770
1771  GURL url = net::FilePathToFileURL(file_info.local_path);
1772
1773#if defined(OS_CHROMEOS)
1774  drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1775#endif
1776
1777  if (url.is_empty())
1778    return;
1779
1780  OpenURL(OpenURLParams(
1781      url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1782}
1783
1784///////////////////////////////////////////////////////////////////////////////
1785// Browser, content::NotificationObserver implementation:
1786
1787void Browser::Observe(int type,
1788                      const content::NotificationSource& source,
1789                      const content::NotificationDetails& details) {
1790  switch (type) {
1791    case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
1792      if (window()->GetLocationBar())
1793        window()->GetLocationBar()->UpdatePageActions();
1794
1795      const extensions::UnloadedExtensionInfo* extension_info =
1796          content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1797
1798      // Close any tabs from the unloaded extension, unless it's terminated,
1799      // in which case let the sad tabs remain.
1800      if (extension_info->reason != extension_misc::UNLOAD_REASON_TERMINATE) {
1801        const Extension* extension = extension_info->extension;
1802        // Iterate backwards as we may remove items while iterating.
1803        for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1804          WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1805          // Two cases are handled here:
1806          // - The scheme check is for when an extension page is loaded in a
1807          //   tab, e.g. chrome-extension://id/page.html.
1808          // - The extension_app check is for apps, which can have non-extension
1809          //   schemes, e.g. https://mail.google.com if you have the Gmail app
1810          //   installed.
1811          if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1812               web_contents->GetURL().host() == extension->id()) ||
1813              (extensions::TabHelper::FromWebContents(
1814                   web_contents)->extension_app() == extension)) {
1815            tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1816          }
1817        }
1818      }
1819      break;
1820    }
1821
1822    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1823      Profile* profile = content::Source<Profile>(source).ptr();
1824      if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1825        window()->GetLocationBar()->InvalidatePageActions();
1826      break;
1827    }
1828
1829    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
1830    case chrome::NOTIFICATION_EXTENSION_LOADED:
1831      // During window creation on Windows we may end up calling into
1832      // SHAppBarMessage, which internally spawns a nested message loop. This
1833      // makes it possible for us to end up here before window creation has
1834      // completed, at which point window_ is NULL. See 94752 for details.
1835      if (window() && window()->GetLocationBar())
1836        window()->GetLocationBar()->UpdatePageActions();
1837      break;
1838
1839#if defined(ENABLE_THEMES)
1840    case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1841      window()->UserChangedTheme();
1842      break;
1843#endif
1844
1845    case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1846      WebContents* web_contents = content::Source<WebContents>(source).ptr();
1847      if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1848        LocationBar* location_bar = window()->GetLocationBar();
1849        if (location_bar)
1850          location_bar->UpdateContentSettingsIcons();
1851      }
1852      break;
1853    }
1854
1855    default:
1856      NOTREACHED() << "Got a notification we didn't register for.";
1857  }
1858}
1859
1860///////////////////////////////////////////////////////////////////////////////
1861// Browser, Command and state updating (private):
1862
1863void Browser::OnDevToolsDisabledChanged() {
1864  if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
1865    content::DevToolsManager::GetInstance()->CloseAllClientHosts();
1866}
1867
1868///////////////////////////////////////////////////////////////////////////////
1869// Browser, UI update coalescing and handling (private):
1870
1871void Browser::UpdateToolbar(bool should_restore_state) {
1872  window_->UpdateToolbar(tab_strip_model_->GetActiveWebContents(),
1873                         should_restore_state);
1874}
1875
1876void Browser::UpdateSearchState(WebContents* contents) {
1877  if (chrome::IsInstantExtendedAPIEnabled())
1878    search_delegate_->OnTabActivated(contents);
1879}
1880
1881void Browser::ScheduleUIUpdate(const WebContents* source,
1882                               unsigned changed_flags) {
1883  if (!source)
1884    return;
1885
1886  // Do some synchronous updates.
1887  if (changed_flags & content::INVALIDATE_TYPE_URL &&
1888      source == tab_strip_model_->GetActiveWebContents()) {
1889    // Only update the URL for the current tab. Note that we do not update
1890    // the navigation commands since those would have already been updated
1891    // synchronously by NavigationStateChanged.
1892    UpdateToolbar(false);
1893    changed_flags &= ~content::INVALIDATE_TYPE_URL;
1894  }
1895  if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
1896    // Update the loading state synchronously. This is so the throbber will
1897    // immediately start/stop, which gives a more snappy feel. We want to do
1898    // this for any tab so they start & stop quickly.
1899    tab_strip_model_->UpdateWebContentsStateAt(
1900        tab_strip_model_->GetIndexOfWebContents(source),
1901        TabStripModelObserver::LOADING_ONLY);
1902    // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
1903    // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
1904    // changed_flags.
1905  }
1906
1907  if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
1908    // To correctly calculate whether the title changed while not loading
1909    // we need to process the update synchronously. This state only matters for
1910    // the TabStripModel, so we notify the TabStripModel now and notify others
1911    // asynchronously.
1912    tab_strip_model_->UpdateWebContentsStateAt(
1913        tab_strip_model_->GetIndexOfWebContents(source),
1914        TabStripModelObserver::TITLE_NOT_LOADING);
1915  }
1916
1917  // If the only updates were synchronously handled above, we're done.
1918  if (changed_flags == 0)
1919    return;
1920
1921  // Save the dirty bits.
1922  scheduled_updates_[source] |= changed_flags;
1923
1924  if (!chrome_updater_factory_.HasWeakPtrs()) {
1925    // No task currently scheduled, start another.
1926    base::MessageLoop::current()->PostDelayedTask(
1927        FROM_HERE,
1928        base::Bind(&Browser::ProcessPendingUIUpdates,
1929                   chrome_updater_factory_.GetWeakPtr()),
1930        base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
1931  }
1932}
1933
1934void Browser::ProcessPendingUIUpdates() {
1935#ifndef NDEBUG
1936  // Validate that all tabs we have pending updates for exist. This is scary
1937  // because the pending list must be kept in sync with any detached or
1938  // deleted tabs.
1939  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1940       i != scheduled_updates_.end(); ++i) {
1941    bool found = false;
1942    for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
1943      if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
1944        found = true;
1945        break;
1946      }
1947    }
1948    DCHECK(found);
1949  }
1950#endif
1951
1952  chrome_updater_factory_.InvalidateWeakPtrs();
1953
1954  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1955       i != scheduled_updates_.end(); ++i) {
1956    // Do not dereference |contents|, it may be out-of-date!
1957    const WebContents* contents = i->first;
1958    unsigned flags = i->second;
1959
1960    if (contents == tab_strip_model_->GetActiveWebContents()) {
1961      // Updates that only matter when the tab is selected go here.
1962
1963      if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
1964        LocationBar* location_bar = window()->GetLocationBar();
1965        if (location_bar)
1966          location_bar->UpdatePageActions();
1967      }
1968      // Updating the URL happens synchronously in ScheduleUIUpdate.
1969      if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
1970        GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1971            tab_strip_model_->GetActiveWebContents())->GetStatusText());
1972      }
1973
1974      if (flags & (content::INVALIDATE_TYPE_TAB |
1975                   content::INVALIDATE_TYPE_TITLE)) {
1976        window_->UpdateTitleBar();
1977      }
1978    }
1979
1980    // Updates that don't depend upon the selected state go here.
1981    if (flags &
1982        (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
1983      tab_strip_model_->UpdateWebContentsStateAt(
1984          tab_strip_model_->GetIndexOfWebContents(contents),
1985          TabStripModelObserver::ALL);
1986    }
1987
1988    // Update the bookmark bar. It may happen that the tab is crashed, and if
1989    // so, the bookmark bar should be hidden.
1990    if (flags & content::INVALIDATE_TYPE_TAB)
1991      UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1992
1993    // We don't need to process INVALIDATE_STATE, since that's not visible.
1994  }
1995
1996  scheduled_updates_.clear();
1997}
1998
1999void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2000  if (!contents)
2001    return;
2002
2003  UpdateMap::iterator i = scheduled_updates_.find(contents);
2004  if (i != scheduled_updates_.end())
2005    scheduled_updates_.erase(i);
2006}
2007
2008///////////////////////////////////////////////////////////////////////////////
2009// Browser, Getters for UI (private):
2010
2011StatusBubble* Browser::GetStatusBubble() {
2012  // In kiosk and exclusive app mode, we want to always hide the status bubble.
2013  if (chrome::IsRunningInAppMode())
2014    return NULL;
2015
2016  return window_ ? window_->GetStatusBubble() : NULL;
2017}
2018
2019///////////////////////////////////////////////////////////////////////////////
2020// Browser, Session restore functions (private):
2021
2022void Browser::SyncHistoryWithTabs(int index) {
2023  SessionService* session_service =
2024      SessionServiceFactory::GetForProfileIfExisting(profile());
2025  if (session_service) {
2026    for (int i = index; i < tab_strip_model_->count(); ++i) {
2027      WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2028      if (web_contents) {
2029        SessionTabHelper* session_tab_helper =
2030            SessionTabHelper::FromWebContents(web_contents);
2031        session_service->SetTabIndexInWindow(
2032            session_id(), session_tab_helper->session_id(), i);
2033        session_service->SetPinnedState(
2034            session_id(),
2035            session_tab_helper->session_id(),
2036            tab_strip_model_->IsTabPinned(i));
2037      }
2038    }
2039  }
2040}
2041
2042///////////////////////////////////////////////////////////////////////////////
2043// Browser, In-progress download termination handling (private):
2044
2045bool Browser::CanCloseWithInProgressDownloads() {
2046  // If we've prompted, we need to hear from the user before we
2047  // can close.
2048  if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2049    return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2050
2051  int num_downloads_blocking;
2052  if (DOWNLOAD_CLOSE_OK ==
2053      OkToCloseWithInProgressDownloads(&num_downloads_blocking))
2054    return true;
2055
2056  // Closing this window will kill some downloads; prompt to make sure
2057  // that's ok.
2058  cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2059  window_->ConfirmBrowserCloseWithPendingDownloads();
2060
2061  // Return false so the browser does not close.  We'll close if the user
2062  // confirms in the dialog.
2063  return false;
2064}
2065
2066///////////////////////////////////////////////////////////////////////////////
2067// Browser, Assorted utility functions (private):
2068
2069void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
2070  // WebContents...
2071  web_contents->SetDelegate(delegate);
2072
2073  // ...and all the helpers.
2074  BlockedContentTabHelper::FromWebContents(web_contents)->
2075      set_delegate(delegate);
2076  BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2077  WebContentsModalDialogManager::FromWebContents(web_contents)->
2078      set_delegate(delegate);
2079  CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2080  SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2081  ZoomController::FromWebContents(web_contents)->set_observer(delegate);
2082}
2083
2084void Browser::CloseFrame() {
2085  window_->Close();
2086}
2087
2088void Browser::TabDetachedAtImpl(content::WebContents* contents,
2089                                int index,
2090                                DetachType type) {
2091  if (type == DETACH_TYPE_DETACH) {
2092    // Save the current location bar state, but only if the tab being detached
2093    // is the selected tab.  Because saving state can conditionally revert the
2094    // location bar, saving the current tab's location bar state to a
2095    // non-selected tab can corrupt both tabs.
2096    if (contents == tab_strip_model_->GetActiveWebContents()) {
2097      LocationBar* location_bar = window()->GetLocationBar();
2098      if (location_bar)
2099        location_bar->SaveStateToContents(contents);
2100    }
2101
2102    if (!tab_strip_model_->closing_all())
2103      SyncHistoryWithTabs(0);
2104  }
2105
2106  SetAsDelegate(contents, NULL);
2107  RemoveScheduledUpdatesFor(contents);
2108
2109  if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2110    find_bar_controller_->ChangeWebContents(NULL);
2111  }
2112
2113  // Stop observing search model changes for this tab.
2114  search_delegate_->OnTabDetached(contents);
2115
2116  for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2117    if (interstitial_observers_[i]->web_contents() != contents)
2118      continue;
2119
2120    delete interstitial_observers_[i];
2121    interstitial_observers_.erase(interstitial_observers_.begin() + i);
2122    return;
2123  }
2124}
2125
2126bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2127                                        bool check_fullscreen) const {
2128  bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2129
2130  unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2131
2132  if (is_type_tabbed())
2133    features |= FEATURE_BOOKMARKBAR;
2134
2135  if (!hide_ui_for_fullscreen) {
2136    if (!is_type_tabbed())
2137      features |= FEATURE_TITLEBAR;
2138
2139    if (is_type_tabbed())
2140      features |= FEATURE_TABSTRIP;
2141
2142    if (is_type_tabbed())
2143      features |= FEATURE_TOOLBAR;
2144
2145    if (!is_app())
2146      features |= FEATURE_LOCATIONBAR;
2147  }
2148  return !!(features & feature);
2149}
2150
2151void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2152  BookmarkBar::State state;
2153  // The bookmark bar is hidden in fullscreen mode, unless on the new tab page.
2154  if (browser_defaults::bookmarks_enabled &&
2155      profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2156      !ShouldHideUIForFullscreen()) {
2157    state = BookmarkBar::SHOW;
2158  } else {
2159    WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2160    BookmarkTabHelper* bookmark_tab_helper =
2161        web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2162    if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2163      state = BookmarkBar::DETACHED;
2164    else
2165      state = BookmarkBar::HIDDEN;
2166  }
2167
2168  if (state == bookmark_bar_state_)
2169    return;
2170
2171  bookmark_bar_state_ = state;
2172
2173  if (!window_)
2174    return;  // This is called from the constructor when window_ is NULL.
2175
2176  if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2177    // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2178    // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2179    // end up querying state once they process the tab switch.
2180    return;
2181  }
2182
2183  bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2184  window_->BookmarkBarStateChanged(shouldAnimate ?
2185      BookmarkBar::ANIMATE_STATE_CHANGE :
2186      BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2187}
2188
2189bool Browser::ShouldHideUIForFullscreen() const {
2190  // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2191  // keep the controls in a slide-down panel.
2192  return window_ && window_->ShouldHideUIForFullscreen();
2193}
2194
2195bool Browser::MaybeCreateBackgroundContents(int route_id,
2196                                            WebContents* opener_web_contents,
2197                                            const string16& frame_name,
2198                                            const GURL& target_url) {
2199  GURL opener_url = opener_web_contents->GetURL();
2200  ExtensionService* extensions_service =
2201      extensions::ExtensionSystem::Get(profile_)->extension_service();
2202
2203  if (!opener_url.is_valid() ||
2204      frame_name.empty() ||
2205      !extensions_service ||
2206      !extensions_service->is_ready())
2207    return false;
2208
2209  // Only hosted apps have web extents, so this ensures that only hosted apps
2210  // can create BackgroundContents. We don't have to check for background
2211  // permission as that is checked in RenderMessageFilter when the CreateWindow
2212  // message is processed.
2213  const Extension* extension =
2214      extensions_service->extensions()->GetHostedAppByURL(
2215          ExtensionURLInfo(opener_url));
2216  if (!extension)
2217    return false;
2218
2219  // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2220  BackgroundContentsService* service =
2221      BackgroundContentsServiceFactory::GetForProfile(profile_);
2222  if (!service)
2223    return false;
2224
2225  // Ensure that we're trying to open this from the extension's process.
2226  SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2227  extensions::ProcessMap* process_map = extensions_service->process_map();
2228  if (!opener_site_instance->GetProcess() ||
2229      !process_map->Contains(
2230          extension->id(), opener_site_instance->GetProcess()->GetID())) {
2231    return false;
2232  }
2233
2234  // Only allow a single background contents per app.
2235  bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2236  BackgroundContents* existing =
2237      service->GetAppBackgroundContents(ASCIIToUTF16(extension->id()));
2238  if (existing) {
2239    // For non-scriptable background contents, ignore the request altogether,
2240    // (returning true, so that a regular WebContents isn't created either).
2241    if (!allow_js_access)
2242      return true;
2243    // For scriptable background pages, if one already exists, close it (even
2244    // if it was specified in the manifest).
2245    DLOG(INFO) << "Closing existing BackgroundContents for " << opener_url;
2246    delete existing;
2247  }
2248
2249  // If script access is not allowed, create the the background contents in a
2250  // new SiteInstance, so that a separate process is used.
2251  scoped_refptr<content::SiteInstance> site_instance =
2252      allow_js_access ?
2253      opener_site_instance :
2254      content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2255
2256  // Passed all the checks, so this should be created as a BackgroundContents.
2257  BackgroundContents* contents =
2258      service->CreateBackgroundContents(site_instance.get(),
2259                                        route_id,
2260                                        profile_,
2261                                        frame_name,
2262                                        ASCIIToUTF16(extension->id()));
2263
2264  // When a separate process is used, the original renderer cannot access the
2265  // new window later, thus we need to navigate the window now.
2266  if (contents && !allow_js_access) {
2267    contents->web_contents()->GetController().LoadURL(
2268        target_url,
2269        content::Referrer(),
2270        content::PAGE_TRANSITION_LINK,
2271        std::string());  // No extra headers.
2272  }
2273
2274  return contents != NULL;
2275}
2276