browser.cc revision 2385ea399aae016c0806a4f9ef3c9cfe3d2a39df
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/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/notifications/notification_ui_manager.h"
67#include "chrome/browser/pepper_broker_infobar_delegate.h"
68#include "chrome/browser/prefs/incognito_mode_prefs.h"
69#include "chrome/browser/profiles/profile.h"
70#include "chrome/browser/profiles/profile_destroyer.h"
71#include "chrome/browser/profiles/profile_manager.h"
72#include "chrome/browser/profiles/profile_metrics.h"
73#include "chrome/browser/repost_form_warning_controller.h"
74#include "chrome/browser/search/search.h"
75#include "chrome/browser/sessions/session_service.h"
76#include "chrome/browser/sessions/session_service_factory.h"
77#include "chrome/browser/sessions/session_tab_helper.h"
78#include "chrome/browser/sessions/session_types.h"
79#include "chrome/browser/sessions/tab_restore_service.h"
80#include "chrome/browser/sessions/tab_restore_service_factory.h"
81#include "chrome/browser/sync/profile_sync_service.h"
82#include "chrome/browser/sync/profile_sync_service_factory.h"
83#include "chrome/browser/sync/sync_ui_util.h"
84#include "chrome/browser/tab_contents/background_contents.h"
85#include "chrome/browser/tab_contents/retargeting_details.h"
86#include "chrome/browser/tab_contents/tab_util.h"
87#include "chrome/browser/themes/theme_service.h"
88#include "chrome/browser/themes/theme_service_factory.h"
89#include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
90#include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
91#include "chrome/browser/ui/blocked_content/blocked_content_tab_helper.h"
92#include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
93#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
94#include "chrome/browser/ui/browser_command_controller.h"
95#include "chrome/browser/ui/browser_commands.h"
96#include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
97#include "chrome/browser/ui/browser_dialogs.h"
98#include "chrome/browser/ui/browser_finder.h"
99#include "chrome/browser/ui/browser_instant_controller.h"
100#include "chrome/browser/ui/browser_iterator.h"
101#include "chrome/browser/ui/browser_list.h"
102#include "chrome/browser/ui/browser_navigator.h"
103#include "chrome/browser/ui/browser_tab_contents.h"
104#include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
105#include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
106#include "chrome/browser/ui/browser_tabstrip.h"
107#include "chrome/browser/ui/browser_toolbar_model_delegate.h"
108#include "chrome/browser/ui/browser_ui_prefs.h"
109#include "chrome/browser/ui/browser_window.h"
110#include "chrome/browser/ui/chrome_pages.h"
111#include "chrome/browser/ui/chrome_select_file_policy.h"
112#include "chrome/browser/ui/fast_unload_controller.h"
113#include "chrome/browser/ui/find_bar/find_bar.h"
114#include "chrome/browser/ui/find_bar/find_bar_controller.h"
115#include "chrome/browser/ui/find_bar/find_tab_helper.h"
116#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
117#include "chrome/browser/ui/global_error/global_error.h"
118#include "chrome/browser/ui/global_error/global_error_service.h"
119#include "chrome/browser/ui/global_error/global_error_service_factory.h"
120#include "chrome/browser/ui/omnibox/location_bar.h"
121#include "chrome/browser/ui/search/search_delegate.h"
122#include "chrome/browser/ui/search/search_model.h"
123#include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
124#include "chrome/browser/ui/singleton_tabs.h"
125#include "chrome/browser/ui/status_bubble.h"
126#include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
127#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
128#include "chrome/browser/ui/tab_modal_confirm_dialog.h"
129#include "chrome/browser/ui/tabs/dock_info.h"
130#include "chrome/browser/ui/tabs/tab_menu_model.h"
131#include "chrome/browser/ui/tabs/tab_strip_model.h"
132#include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
133#include "chrome/browser/ui/unload_controller.h"
134#include "chrome/browser/ui/web_applications/web_app_ui.h"
135#include "chrome/browser/ui/webui/signin/login_ui_service.h"
136#include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
137#include "chrome/browser/ui/window_sizer/window_sizer.h"
138#include "chrome/browser/ui/zoom/zoom_controller.h"
139#include "chrome/browser/upgrade_detector.h"
140#include "chrome/browser/web_applications/web_app.h"
141#include "chrome/common/chrome_constants.h"
142#include "chrome/common/chrome_switches.h"
143#include "chrome/common/custom_handlers/protocol_handler.h"
144#include "chrome/common/extensions/background_info.h"
145#include "chrome/common/extensions/extension.h"
146#include "chrome/common/extensions/extension_constants.h"
147#include "chrome/common/net/url_fixer_upper.h"
148#include "chrome/common/pref_names.h"
149#include "chrome/common/profiling.h"
150#include "chrome/common/search_types.h"
151#include "chrome/common/startup_metric_utils.h"
152#include "chrome/common/url_constants.h"
153#include "components/web_modal/web_contents_modal_dialog_manager.h"
154#include "content/public/browser/devtools_manager.h"
155#include "content/public/browser/download_item.h"
156#include "content/public/browser/download_manager.h"
157#include "content/public/browser/interstitial_page.h"
158#include "content/public/browser/invalidate_type.h"
159#include "content/public/browser/navigation_controller.h"
160#include "content/public/browser/navigation_entry.h"
161#include "content/public/browser/notification_details.h"
162#include "content/public/browser/notification_service.h"
163#include "content/public/browser/plugin_service.h"
164#include "content/public/browser/render_process_host.h"
165#include "content/public/browser/render_view_host.h"
166#include "content/public/browser/site_instance.h"
167#include "content/public/browser/user_metrics.h"
168#include "content/public/browser/web_contents.h"
169#include "content/public/browser/web_contents_view.h"
170#include "content/public/common/content_switches.h"
171#include "content/public/common/page_zoom.h"
172#include "content/public/common/renderer_preferences.h"
173#include "content/public/common/webplugininfo.h"
174#include "extensions/common/constants.h"
175#include "grit/chromium_strings.h"
176#include "grit/generated_resources.h"
177#include "grit/locale_settings.h"
178#include "grit/theme_resources.h"
179#include "net/base/net_util.h"
180#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
181#include "net/cookies/cookie_monster.h"
182#include "net/url_request/url_request_context.h"
183#include "third_party/WebKit/public/web/WebWindowFeatures.h"
184#include "ui/base/l10n/l10n_util.h"
185#include "ui/base/window_open_disposition.h"
186#include "ui/gfx/point.h"
187#include "ui/shell_dialogs/selected_file_info.h"
188
189#if defined(OS_WIN)
190#include "base/win/metro.h"
191#include "chrome/browser/shell_integration.h"
192#include "chrome/browser/ssl/ssl_error_info.h"
193#include "chrome/browser/task_manager/task_manager.h"
194#include "chrome/browser/ui/view_ids.h"
195#include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
196#include "ui/base/win/shell.h"
197#include "ui/views/win/hwnd_util.h"
198#endif  // OS_WIN
199
200#if defined(OS_CHROMEOS)
201#include "chrome/browser/chromeos/drive/file_system_util.h"
202#endif
203
204#if defined(USE_ASH)
205#include "ash/ash_switches.h"
206#endif
207
208using base::TimeDelta;
209using content::NativeWebKeyboardEvent;
210using content::NavigationController;
211using content::NavigationEntry;
212using content::OpenURLParams;
213using content::PluginService;
214using content::Referrer;
215using content::SiteInstance;
216using content::UserMetricsAction;
217using content::WebContents;
218using extensions::Extension;
219using ui::WebDialogDelegate;
220using web_modal::WebContentsModalDialogManager;
221using WebKit::WebWindowFeatures;
222
223///////////////////////////////////////////////////////////////////////////////
224
225namespace {
226
227// The URL to be loaded to display the "Report a broken page" form.
228const char kBrokenPageUrl[] =
229    "https://www.google.com/support/chrome/bin/request.py?contact_type="
230    "broken_website&format=inproduct&p.page_title=$1&p.page_url=$2";
231
232// How long we wait before updating the browser chrome while loading a page.
233const int kUIUpdateCoalescingTimeMS = 200;
234
235BrowserWindow* CreateBrowserWindow(Browser* browser) {
236  return BrowserWindow::CreateBrowserWindow(browser);
237}
238
239// Is the fast tab unload experiment enabled?
240bool IsFastTabUnloadEnabled() {
241  return CommandLine::ForCurrentProcess()->HasSwitch(
242        switches::kEnableFastUnload);
243}
244
245}  // namespace
246
247////////////////////////////////////////////////////////////////////////////////
248// Browser, CreateParams:
249
250Browser::CreateParams::CreateParams(Profile* profile,
251                                    chrome::HostDesktopType host_desktop_type)
252    : type(TYPE_TABBED),
253      profile(profile),
254      host_desktop_type(host_desktop_type),
255      app_type(APP_TYPE_HOST),
256      initial_show_state(ui::SHOW_STATE_DEFAULT),
257      is_session_restore(false),
258      window(NULL) {
259}
260
261Browser::CreateParams::CreateParams(Type type,
262                                    Profile* profile,
263                                    chrome::HostDesktopType host_desktop_type)
264    : type(type),
265      profile(profile),
266      host_desktop_type(host_desktop_type),
267      app_type(APP_TYPE_HOST),
268      initial_show_state(ui::SHOW_STATE_DEFAULT),
269      is_session_restore(false),
270      window(NULL) {
271}
272
273// static
274Browser::CreateParams Browser::CreateParams::CreateForApp(
275    Type type,
276    const std::string& app_name,
277    const gfx::Rect& window_bounds,
278    Profile* profile,
279    chrome::HostDesktopType host_desktop_type) {
280  DCHECK(type != TYPE_TABBED);
281  DCHECK(!app_name.empty());
282
283  CreateParams params(type, profile, host_desktop_type);
284  params.app_name = app_name;
285  params.app_type = APP_TYPE_CHILD;
286  params.initial_bounds = window_bounds;
287
288  return params;
289}
290
291// static
292Browser::CreateParams Browser::CreateParams::CreateForDevTools(
293    Profile* profile,
294    chrome::HostDesktopType host_desktop_type) {
295  CreateParams params(TYPE_POPUP, profile, host_desktop_type);
296  params.app_name = DevToolsWindow::kDevToolsApp;
297  return params;
298}
299
300////////////////////////////////////////////////////////////////////////////////
301// Browser, InterstitialObserver:
302
303class Browser::InterstitialObserver : public content::WebContentsObserver {
304 public:
305  InterstitialObserver(Browser* browser, content::WebContents* web_contents)
306      : WebContentsObserver(web_contents),
307        browser_(browser) {
308  }
309
310  using content::WebContentsObserver::web_contents;
311
312  virtual void DidAttachInterstitialPage() OVERRIDE {
313    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
314  }
315
316  virtual void DidDetachInterstitialPage() OVERRIDE {
317    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
318  }
319
320 private:
321  Browser* browser_;
322
323  DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
324};
325
326///////////////////////////////////////////////////////////////////////////////
327// Browser, Constructors, Creation, Showing:
328
329Browser::Browser(const CreateParams& params)
330    : type_(params.type),
331      profile_(params.profile),
332      window_(NULL),
333      tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
334      tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
335                                         params.profile)),
336      app_name_(params.app_name),
337      app_type_(params.app_type),
338      chrome_updater_factory_(this),
339      cancel_download_confirmation_state_(NOT_PROMPTED),
340      override_bounds_(params.initial_bounds),
341      initial_show_state_(params.initial_show_state),
342      is_session_restore_(params.is_session_restore),
343      host_desktop_type_(params.host_desktop_type),
344      weak_factory_(this),
345      content_setting_bubble_model_delegate_(
346          new BrowserContentSettingBubbleModelDelegate(this)),
347      toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
348      tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
349      synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
350      bookmark_bar_state_(BookmarkBar::HIDDEN),
351      command_controller_(new chrome::BrowserCommandController(
352          this, g_browser_process->profile_manager())),
353      window_has_shown_(false) {
354  // If this causes a crash then a window is being opened using a profile type
355  // that is disallowed by policy. The crash prevents the disabled window type
356  // from opening at all, but the path that triggered it should be fixed.
357  CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
358
359  // TODO(jeremy): Move to initializer list once flag is removed.
360  if (IsFastTabUnloadEnabled())
361    fast_unload_controller_.reset(new chrome::FastUnloadController(this));
362  else
363    unload_controller_.reset(new chrome::UnloadController(this));
364
365  if (!app_name_.empty())
366    chrome::RegisterAppPrefs(app_name_, profile_);
367  tab_strip_model_->AddObserver(this);
368
369  toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
370  search_model_.reset(new SearchModel());
371  search_delegate_.reset(
372      new SearchDelegate(search_model_.get(), toolbar_model_.get()));
373
374  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
375                 content::Source<Profile>(profile_->GetOriginalProfile()));
376  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
377                 content::Source<Profile>(profile_->GetOriginalProfile()));
378  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
379                 content::Source<Profile>(profile_->GetOriginalProfile()));
380  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
381                 content::NotificationService::AllSources());
382#if defined(ENABLE_THEMES)
383  registrar_.Add(
384      this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
385      content::Source<ThemeService>(
386          ThemeServiceFactory::GetForProfile(profile_)));
387#endif
388  registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
389                 content::NotificationService::AllSources());
390
391  profile_pref_registrar_.Init(profile_->GetPrefs());
392  profile_pref_registrar_.Add(
393      prefs::kDevToolsDisabled,
394      base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
395  profile_pref_registrar_.Add(
396      prefs::kShowBookmarkBar,
397      base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
398                 BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
399
400  BrowserList::AddBrowser(this);
401
402  // NOTE: These prefs all need to be explicitly destroyed in the destructor
403  // or you'll get a nasty surprise when you run the incognito tests.
404  encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
405                             profile_->GetPrefs());
406
407  if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
408    instant_controller_.reset(new BrowserInstantController(this));
409
410  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
411
412  ProfileMetrics::LogProfileLaunch(profile_);
413
414  window_ = params.window ? params.window : CreateBrowserWindow(this);
415
416  // TODO(beng): move to BrowserFrameWin.
417#if defined(OS_WIN)
418  // Set the app user model id for this application to that of the application
419  // name.  See http://crbug.com/7028.
420  ui::win::SetAppIdForWindow(
421      is_app() ?
422      ShellIntegration::GetAppModelIdForProfile(UTF8ToWide(app_name_),
423                                                profile_->GetPath()) :
424      ShellIntegration::GetChromiumModelIdForProfile(profile_->GetPath()),
425      views::HWNDForNativeWindow(window()->GetNativeWindow()));
426#endif
427
428  // Create the extension window controller before sending notifications.
429  extension_window_controller_.reset(
430      new BrowserExtensionWindowController(this));
431
432  // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
433  //             replace uses of this with BL's notifications.
434  content::NotificationService::current()->Notify(
435      chrome::NOTIFICATION_BROWSER_WINDOW_READY,
436      content::Source<Browser>(this),
437      content::NotificationService::NoDetails());
438
439  // TODO(beng): move to ChromeBrowserMain:
440  if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
441#if defined(OS_WIN)
442    // Notify PDM that this is a first run.
443    ImportAutofillDataWin(
444        autofill::PersonalDataManagerFactory::GetForProfile(profile_));
445#endif  // defined(OS_WIN)
446  }
447
448  fullscreen_controller_.reset(new FullscreenController(this));
449}
450
451Browser::~Browser() {
452  // The tab strip should not have any tabs at this point.
453  if (!browser_shutdown::ShuttingDownWithoutClosingBrowsers())
454    DCHECK(tab_strip_model_->empty());
455
456  tab_strip_model_->RemoveObserver(this);
457
458  // Destroy the BrowserCommandController before removing the browser, so that
459  // it doesn't act on any notifications that are sent as a result of removing
460  // the browser.
461  command_controller_.reset();
462  BrowserList::RemoveBrowser(this);
463
464  SessionService* session_service =
465      SessionServiceFactory::GetForProfile(profile_);
466  if (session_service)
467    session_service->WindowClosed(session_id_);
468
469  TabRestoreService* tab_restore_service =
470      TabRestoreServiceFactory::GetForProfile(profile());
471  if (tab_restore_service)
472    tab_restore_service->BrowserClosed(tab_restore_service_delegate());
473
474#if !defined(OS_MACOSX)
475  if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
476    // We're the last browser window with this profile. We need to nuke the
477    // TabRestoreService, which will start the shutdown of the
478    // NavigationControllers and allow for proper shutdown. If we don't do this
479    // chrome won't shutdown cleanly, and may end up crashing when some
480    // thread tries to use the IO thread (or another thread) that is no longer
481    // valid.
482    // This isn't a valid assumption for Mac OS, as it stays running after
483    // the last browser has closed. The Mac equivalent is in its app
484    // controller.
485    TabRestoreServiceFactory::ResetForProfile(profile_);
486  }
487#endif
488
489  profile_pref_registrar_.RemoveAll();
490
491  encoding_auto_detect_.Destroy();
492
493  // Destroy BrowserExtensionWindowController before the incognito profile
494  // is destroyed to make sure the chrome.windows.onRemoved event is sent.
495  extension_window_controller_.reset();
496
497  // Destroy BrowserInstantController before the incongnito profile is destroyed
498  // because the InstantController destructor depends on this profile.
499  instant_controller_.reset();
500
501  if (profile_->IsOffTheRecord() &&
502      !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
503    // An incognito profile is no longer needed, this indirectly frees
504    // its cache and cookies once it gets destroyed at the appropriate time.
505    ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
506  }
507
508  // There may be pending file dialogs, we need to tell them that we've gone
509  // away so they don't try and call back to us.
510  if (select_file_dialog_.get())
511    select_file_dialog_->ListenerDestroyed();
512}
513
514///////////////////////////////////////////////////////////////////////////////
515// Getters & Setters
516
517FindBarController* Browser::GetFindBarController() {
518  if (!find_bar_controller_.get()) {
519    FindBar* find_bar = window_->CreateFindBar();
520    find_bar_controller_.reset(new FindBarController(find_bar));
521    find_bar->SetFindBarController(find_bar_controller_.get());
522    find_bar_controller_->ChangeWebContents(
523        tab_strip_model_->GetActiveWebContents());
524    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
525  }
526  return find_bar_controller_.get();
527}
528
529bool Browser::HasFindBarController() const {
530  return find_bar_controller_.get() != NULL;
531}
532
533bool Browser::is_app() const {
534  return !app_name_.empty();
535}
536
537bool Browser::is_devtools() const {
538  return app_name_ == DevToolsWindow::kDevToolsApp;
539}
540
541///////////////////////////////////////////////////////////////////////////////
542// Browser, State Storage and Retrieval for UI:
543
544gfx::Image Browser::GetCurrentPageIcon() const {
545  WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
546  // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
547  // window during the window's creation (before tabs have been added).
548  FaviconTabHelper* favicon_tab_helper =
549      web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
550  return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
551}
552
553string16 Browser::GetWindowTitleForCurrentTab() const {
554  WebContents* contents = tab_strip_model_->GetActiveWebContents();
555  string16 title;
556
557  // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
558  // window during the window's creation (before tabs have been added).
559  if (contents) {
560    title = contents->GetTitle();
561    FormatTitleForDisplay(&title);
562  }
563  if (title.empty())
564    title = CoreTabHelper::GetDefaultTitle();
565
566#if defined(OS_MACOSX)
567  // On Mac, we don't want to suffix the page title with
568  // the application name.
569  return title;
570#elif defined(USE_ASH)
571  // On Ash, we don't want to suffix the page title with the application name,
572  // but on Windows, where USE_ASH can also be true, we still want the prefix
573  // on desktop.
574  if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
575    return title;
576#endif
577  // Don't append the app name to window titles on app frames and app popups
578  return is_app() ?
579      title :
580      l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
581}
582
583// static
584void Browser::FormatTitleForDisplay(string16* title) {
585  size_t current_index = 0;
586  size_t match_index;
587  while ((match_index = title->find(L'\n', current_index)) != string16::npos) {
588    title->replace(match_index, 1, string16());
589    current_index = match_index;
590  }
591}
592
593///////////////////////////////////////////////////////////////////////////////
594// Browser, OnBeforeUnload handling:
595
596bool Browser::ShouldCloseWindow() {
597  if (!CanCloseWithInProgressDownloads())
598    return false;
599
600  if (IsFastTabUnloadEnabled())
601    return fast_unload_controller_->ShouldCloseWindow();
602  return unload_controller_->ShouldCloseWindow();
603}
604
605bool Browser::HasCompletedUnloadProcessing() const {
606  DCHECK(IsFastTabUnloadEnabled());
607  return fast_unload_controller_->HasCompletedUnloadProcessing();
608}
609
610bool Browser::IsAttemptingToCloseBrowser() const {
611  if (IsFastTabUnloadEnabled())
612    return fast_unload_controller_->is_attempting_to_close_browser();
613  return unload_controller_->is_attempting_to_close_browser();
614}
615
616void Browser::OnWindowClosing() {
617  if (!ShouldCloseWindow())
618    return;
619
620  // Application should shutdown on last window close if the user is explicitly
621  // trying to quit, or if there is nothing keeping the browser alive (such as
622  // AppController on the Mac, or BackgroundContentsService for background
623  // pages).
624  bool should_quit_if_last_browser =
625      browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
626
627  if (should_quit_if_last_browser &&
628      BrowserList::GetInstance(host_desktop_type_)->size() == 1) {
629    browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
630  }
631
632  // Don't use GetForProfileIfExisting here, we want to force creation of the
633  // session service so that user can restore what was open.
634  SessionService* session_service =
635      SessionServiceFactory::GetForProfile(profile());
636  if (session_service)
637    session_service->WindowClosing(session_id());
638
639  TabRestoreService* tab_restore_service =
640      TabRestoreServiceFactory::GetForProfile(profile());
641
642#if defined(USE_AURA)
643  if (tab_restore_service && is_app())
644    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
645#endif
646
647  if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
648    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
649
650  // TODO(sky): convert session/tab restore to use notification.
651  content::NotificationService::current()->Notify(
652      chrome::NOTIFICATION_BROWSER_CLOSING,
653      content::Source<Browser>(this),
654      content::NotificationService::NoDetails());
655
656  if (!IsFastTabUnloadEnabled())
657    tab_strip_model_->CloseAllTabs();
658}
659
660////////////////////////////////////////////////////////////////////////////////
661// In-progress download termination handling:
662
663void Browser::InProgressDownloadResponse(bool cancel_downloads) {
664  if (cancel_downloads) {
665    cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
666    chrome::CloseWindow(this);
667    return;
668  }
669
670  // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
671  // close again we'll show the warning again.
672  cancel_download_confirmation_state_ = NOT_PROMPTED;
673
674  // Show the download page so the user can figure-out what downloads are still
675  // in-progress.
676  chrome::ShowDownloads(this);
677}
678
679Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
680    int* num_downloads_blocking) const {
681  DCHECK(num_downloads_blocking);
682  *num_downloads_blocking = 0;
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::GetForBrowserContext(profile());
722  if ((profile_window_count == 0) &&
723      (download_service->DownloadCount() > 0) &&
724      profile()->IsOffTheRecord()) {
725    *num_downloads_blocking = download_service->DownloadCount();
726    return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
727  }
728
729  // Those are the only conditions under which we will block shutdown.
730  return DOWNLOAD_CLOSE_OK;
731}
732
733////////////////////////////////////////////////////////////////////////////////
734// Browser, Tab adding/showing functions:
735
736void Browser::WindowFullscreenStateChanged() {
737  fullscreen_controller_->WindowFullscreenStateChanged();
738  command_controller_->FullscreenStateChanged();
739  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
740}
741
742void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
743  // When the current tab's SSL state changes, we need to update the URL
744  // bar to reflect the new state.
745  DCHECK(web_contents);
746  if (tab_strip_model_->GetActiveWebContents() == web_contents)
747    UpdateToolbar(false);
748}
749
750///////////////////////////////////////////////////////////////////////////////
751// Browser, Assorted browser commands:
752
753void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
754  fullscreen_controller_->ToggleFullscreenModeWithExtension(extension_url);
755}
756
757bool Browser::SupportsWindowFeature(WindowFeature feature) const {
758  return SupportsWindowFeatureImpl(feature, true);
759}
760
761bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
762  return SupportsWindowFeatureImpl(feature, false);
763}
764
765void Browser::ToggleEncodingAutoDetect() {
766  content::RecordAction(UserMetricsAction("AutoDetectChange"));
767  encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
768  // If "auto detect" is turned on, then any current override encoding
769  // is cleared. This also implicitly performs a reload.
770  // OTOH, if "auto detect" is turned off, we don't change the currently
771  // active encoding.
772  if (encoding_auto_detect_.GetValue()) {
773    WebContents* contents = tab_strip_model_->GetActiveWebContents();
774    if (contents)
775      contents->ResetOverrideEncoding();
776  }
777}
778
779void Browser::OverrideEncoding(int encoding_id) {
780  content::RecordAction(UserMetricsAction("OverrideEncoding"));
781  const std::string selected_encoding =
782      CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
783  WebContents* contents = tab_strip_model_->GetActiveWebContents();
784  if (!selected_encoding.empty() && contents)
785     contents->SetOverrideEncoding(selected_encoding);
786  // Update the list of recently selected encodings.
787  std::string new_selected_encoding_list;
788  if (CharacterEncoding::UpdateRecentlySelectedEncoding(
789        profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
790        encoding_id,
791        &new_selected_encoding_list)) {
792    profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
793                                    new_selected_encoding_list);
794  }
795}
796
797void Browser::OpenFile() {
798  content::RecordAction(UserMetricsAction("OpenFile"));
799  select_file_dialog_ = ui::SelectFileDialog::Create(
800      this, new ChromeSelectFilePolicy(
801          tab_strip_model_->GetActiveWebContents()));
802
803  const base::FilePath directory = profile_->last_selected_directory();
804
805  // TODO(beng): figure out how to juggle this.
806  gfx::NativeWindow parent_window = window_->GetNativeWindow();
807  ui::SelectFileDialog::FileTypeInfo file_types;
808  file_types.support_drive = true;
809  select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
810                                  string16(),
811                                  directory,
812                                  &file_types,
813                                  0,
814                                  base::FilePath::StringType(),
815                                  parent_window,
816                                  NULL);
817}
818
819void Browser::UpdateDownloadShelfVisibility(bool visible) {
820  if (GetStatusBubble())
821    GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
822}
823
824///////////////////////////////////////////////////////////////////////////////
825
826// static
827bool Browser::RunUnloadEventsHelper(WebContents* contents) {
828  // If the WebContents is not connected yet, then there's no unload
829  // handler we can fire even if the WebContents has an unload listener.
830  // One case where we hit this is in a tab that has an infinite loop
831  // before load.
832  if (contents->NeedToFireBeforeUnload()) {
833    // If the page has unload listeners, then we tell the renderer to fire
834    // them. Once they have fired, we'll get a message back saying whether
835    // to proceed closing the page or not, which sends us back to this method
836    // with the NeedToFireBeforeUnload bit cleared.
837    contents->GetRenderViewHost()->FirePageBeforeUnload(false);
838    return true;
839  }
840  return false;
841}
842
843// static
844void Browser::JSOutOfMemoryHelper(WebContents* web_contents) {
845  InfoBarService* infobar_service =
846      InfoBarService::FromWebContents(web_contents);
847  if (!infobar_service)
848    return;
849  SimpleAlertInfoBarDelegate::Create(
850      infobar_service, InfoBarDelegate::kNoIconID,
851      l10n_util::GetStringUTF16(IDS_JS_OUT_OF_MEMORY_PROMPT), true);
852}
853
854// static
855void Browser::RegisterProtocolHandlerHelper(WebContents* web_contents,
856                                            const std::string& protocol,
857                                            const GURL& url,
858                                            const string16& title,
859                                            bool user_gesture,
860                                            BrowserWindow* window) {
861  Profile* profile =
862      Profile::FromBrowserContext(web_contents->GetBrowserContext());
863  if (profile->IsOffTheRecord())
864    return;
865
866  ProtocolHandler handler =
867      ProtocolHandler::CreateProtocolHandler(protocol, url, title);
868
869  ProtocolHandlerRegistry* registry =
870      ProtocolHandlerRegistryFactory::GetForProfile(profile);
871  if (registry->SilentlyHandleRegisterHandlerRequest(handler))
872    return;
873
874  TabSpecificContentSettings* tab_content_settings =
875      TabSpecificContentSettings::FromWebContents(web_contents);
876  if (!user_gesture && window) {
877    tab_content_settings->set_pending_protocol_handler(handler);
878    tab_content_settings->set_previous_protocol_handler(
879        registry->GetHandlerFor(handler.protocol()));
880    window->GetLocationBar()->UpdateContentSettingsIcons();
881    return;
882  }
883
884  // Make sure content-setting icon is turned off in case the page does
885  // ungestured and gestured RPH calls.
886  if (window) {
887    tab_content_settings->ClearPendingProtocolHandler();
888    window->GetLocationBar()->UpdateContentSettingsIcons();
889  }
890
891  RegisterProtocolHandlerInfoBarDelegate::Create(
892      InfoBarService::FromWebContents(web_contents), registry, handler);
893}
894
895// static
896void Browser::FindReplyHelper(WebContents* web_contents,
897                              int request_id,
898                              int number_of_matches,
899                              const gfx::Rect& selection_rect,
900                              int active_match_ordinal,
901                              bool final_update) {
902  FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
903  if (!find_tab_helper)
904    return;
905
906  find_tab_helper->HandleFindReply(request_id,
907                                   number_of_matches,
908                                   selection_rect,
909                                   active_match_ordinal,
910                                   final_update);
911}
912
913void Browser::UpdateUIForNavigationInTab(WebContents* contents,
914                                         content::PageTransition transition,
915                                         bool user_initiated) {
916  tab_strip_model_->TabNavigating(contents, transition);
917
918  bool contents_is_selected =
919      contents == tab_strip_model_->GetActiveWebContents();
920  if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
921    // Forcibly reset the location bar if the url is going to change in the
922    // current tab, since otherwise it won't discard any ongoing user edits,
923    // since it doesn't realize this is a user-initiated action.
924    window()->GetLocationBar()->Revert();
925  }
926
927  if (GetStatusBubble())
928    GetStatusBubble()->Hide();
929
930  // Update the location bar. This is synchronous. We specifically don't
931  // update the load state since the load hasn't started yet and updating it
932  // will put it out of sync with the actual state like whether we're
933  // displaying a favicon, which controls the throbber. If we updated it here,
934  // the throbber will show the default favicon for a split second when
935  // navigating away from the new tab page.
936  ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
937
938  if (contents_is_selected)
939    contents->GetView()->SetInitialFocus();
940}
941
942///////////////////////////////////////////////////////////////////////////////
943// Browser, PageNavigator implementation:
944
945WebContents* Browser::OpenURL(const OpenURLParams& params) {
946  return OpenURLFromTab(NULL, params);
947}
948
949///////////////////////////////////////////////////////////////////////////////
950// Browser, TabStripModelObserver implementation:
951
952void Browser::TabInsertedAt(WebContents* contents,
953                            int index,
954                            bool foreground) {
955  SetAsDelegate(contents, this);
956  SessionTabHelper* session_tab_helper =
957      SessionTabHelper::FromWebContents(contents);
958  session_tab_helper->SetWindowID(session_id());
959
960  content::NotificationService::current()->Notify(
961      chrome::NOTIFICATION_TAB_PARENTED,
962      content::Source<content::WebContents>(contents),
963      content::NotificationService::NoDetails());
964
965  SyncHistoryWithTabs(index);
966
967  // Make sure the loading state is updated correctly, otherwise the throbber
968  // won't start if the page is loading.
969  LoadingStateChanged(contents);
970
971  interstitial_observers_.push_back(new InterstitialObserver(this, contents));
972
973  SessionService* session_service =
974      SessionServiceFactory::GetForProfile(profile_);
975  if (session_service) {
976    session_service->TabInserted(contents);
977    int new_active_index = tab_strip_model_->active_index();
978    if (index < new_active_index)
979      session_service->SetSelectedTabInWindow(session_id(),
980                                              new_active_index);
981  }
982}
983
984void Browser::TabClosingAt(TabStripModel* tab_strip_model,
985                           WebContents* contents,
986                           int index) {
987  fullscreen_controller_->OnTabClosing(contents);
988  SessionService* session_service =
989      SessionServiceFactory::GetForProfile(profile_);
990  if (session_service)
991    session_service->TabClosing(contents);
992  content::NotificationService::current()->Notify(
993      chrome::NOTIFICATION_TAB_CLOSING,
994      content::Source<NavigationController>(&contents->GetController()),
995      content::NotificationService::NoDetails());
996
997  // Sever the WebContents' connection back to us.
998  SetAsDelegate(contents, NULL);
999}
1000
1001void Browser::TabDetachedAt(WebContents* contents, int index) {
1002  // TabDetachedAt is called before TabStripModel has updated the
1003  // active index.
1004  int old_active_index = tab_strip_model_->active_index();
1005  if (index < old_active_index && !tab_strip_model_->closing_all()) {
1006    SessionService* session_service =
1007        SessionServiceFactory::GetForProfileIfExisting(profile_);
1008    if (session_service)
1009      session_service->SetSelectedTabInWindow(session_id(),
1010                                              old_active_index - 1);
1011  }
1012  TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
1013}
1014
1015void Browser::TabDeactivated(WebContents* contents) {
1016  fullscreen_controller_->OnTabDeactivated(contents);
1017  search_delegate_->OnTabDeactivated(contents);
1018
1019  // Save what the user's currently typing, so it can be restored when we
1020  // switch back to this tab.
1021  window_->GetLocationBar()->SaveStateToContents(contents);
1022
1023  if (instant_controller_)
1024    instant_controller_->TabDeactivated(contents);
1025}
1026
1027void Browser::ActiveTabChanged(WebContents* old_contents,
1028                               WebContents* new_contents,
1029                               int index,
1030                               int reason) {
1031  content::RecordAction(UserMetricsAction("ActiveTabChanged"));
1032
1033  // Discarded tabs always get reloaded.
1034  if (tab_strip_model_->IsTabDiscarded(index)) {
1035    LOG(WARNING) << "Reloading discarded tab at " << index;
1036    static int reload_count = 0;
1037    UMA_HISTOGRAM_CUSTOM_COUNTS(
1038        "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1039    chrome::Reload(this, CURRENT_TAB);
1040  }
1041
1042  // If we have any update pending, do it now.
1043  if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1044    ProcessPendingUIUpdates();
1045
1046  // Propagate the profile to the location bar.
1047  UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1048
1049  // Propagate tab state to toolbar, tab-strip, etc.
1050  UpdateSearchState(new_contents);
1051
1052  // Update reload/stop state.
1053  command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1054
1055  // Update commands to reflect current state.
1056  command_controller_->TabStateChanged();
1057
1058  // Reset the status bubble.
1059  StatusBubble* status_bubble = GetStatusBubble();
1060  if (status_bubble) {
1061    status_bubble->Hide();
1062
1063    // Show the loading state (if any).
1064    status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1065        tab_strip_model_->GetActiveWebContents())->GetStatusText());
1066  }
1067
1068  if (HasFindBarController()) {
1069    find_bar_controller_->ChangeWebContents(new_contents);
1070    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1071  }
1072
1073  // Update sessions. Don't force creation of sessions. If sessions doesn't
1074  // exist, the change will be picked up by sessions when created.
1075  SessionService* session_service =
1076      SessionServiceFactory::GetForProfileIfExisting(profile_);
1077  if (session_service && !tab_strip_model_->closing_all()) {
1078    session_service->SetSelectedTabInWindow(session_id(),
1079                                            tab_strip_model_->active_index());
1080  }
1081
1082  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1083
1084  // This needs to be called after UpdateSearchState().
1085  if (instant_controller_)
1086    instant_controller_->ActiveTabChanged();
1087
1088  autofill::TabAutofillManagerDelegate::FromWebContents(new_contents)->
1089      TabActivated(reason);
1090}
1091
1092void Browser::TabMoved(WebContents* contents,
1093                       int from_index,
1094                       int to_index) {
1095  DCHECK(from_index >= 0 && to_index >= 0);
1096  // Notify the history service.
1097  SyncHistoryWithTabs(std::min(from_index, to_index));
1098}
1099
1100void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1101                            WebContents* old_contents,
1102                            WebContents* new_contents,
1103                            int index) {
1104  TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1105  fullscreen_controller_->OnTabClosing(old_contents);
1106  SessionService* session_service =
1107      SessionServiceFactory::GetForProfile(profile_);
1108  if (session_service)
1109    session_service->TabClosing(old_contents);
1110  TabInsertedAt(new_contents,
1111                index,
1112                (index == tab_strip_model_->active_index()));
1113
1114  int entry_count = new_contents->GetController().GetEntryCount();
1115  if (entry_count > 0) {
1116    // Send out notification so that observers are updated appropriately.
1117    new_contents->GetController().NotifyEntryChanged(
1118        new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1119        entry_count - 1);
1120  }
1121
1122  if (session_service) {
1123    // The new_contents may end up with a different navigation stack. Force
1124    // the session service to update itself.
1125    session_service->TabRestored(new_contents,
1126                                 tab_strip_model_->IsTabPinned(index));
1127  }
1128}
1129
1130void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1131  SessionService* session_service =
1132      SessionServiceFactory::GetForProfileIfExisting(profile());
1133  if (session_service) {
1134    SessionTabHelper* session_tab_helper =
1135        SessionTabHelper::FromWebContents(contents);
1136    session_service->SetPinnedState(session_id(),
1137                                    session_tab_helper->session_id(),
1138                                    tab_strip_model_->IsTabPinned(index));
1139  }
1140}
1141
1142void Browser::TabStripEmpty() {
1143  // Close the frame after we return to the message loop (not immediately,
1144  // otherwise it will destroy this object before the stack has a chance to
1145  // cleanly unwind.)
1146  // Note: This will be called several times if TabStripEmpty is called several
1147  //       times. This is because it does not close the window if tabs are
1148  //       still present.
1149  base::MessageLoop::current()->PostTask(
1150      FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1151
1152  // Instant may have visible WebContents that need to be detached before the
1153  // window system closes.
1154  instant_controller_.reset();
1155}
1156
1157bool Browser::CanOverscrollContent() const {
1158#if defined(USE_AURA)
1159  bool overscroll_enabled = CommandLine::ForCurrentProcess()->
1160      GetSwitchValueASCII(switches::kOverscrollHistoryNavigation) != "0";
1161  if (!overscroll_enabled)
1162    return false;
1163  if (is_app() || is_devtools() || !is_type_tabbed())
1164    return false;
1165
1166  // The detached bookmark bar has appearance of floating above the
1167  // web-contents. This does not play nicely with overscroll navigation
1168  // gestures. So disable overscroll navigation when the bookmark bar is in the
1169  // detached state.
1170  if (bookmark_bar_state_ == BookmarkBar::DETACHED)
1171    return false;
1172  return true;
1173#else
1174  return false;
1175#endif
1176}
1177
1178bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1179                                     const NativeWebKeyboardEvent& event,
1180                                     bool* is_keyboard_shortcut) {
1181  // Escape exits tabbed fullscreen mode.
1182  // TODO(koz): Write a test for this http://crbug.com/100441.
1183  if (event.windowsKeyCode == 27 &&
1184      fullscreen_controller_->HandleUserPressedEscape()) {
1185    return true;
1186  }
1187  return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1188}
1189
1190void Browser::HandleKeyboardEvent(content::WebContents* source,
1191                                  const NativeWebKeyboardEvent& event) {
1192  window()->HandleKeyboardEvent(event);
1193}
1194
1195bool Browser::TabsNeedBeforeUnloadFired() {
1196  if (IsFastTabUnloadEnabled())
1197    return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1198  return unload_controller_->TabsNeedBeforeUnloadFired();
1199}
1200
1201void Browser::OverscrollUpdate(int delta_y) {
1202  window_->OverscrollUpdate(delta_y);
1203}
1204
1205bool Browser::IsMouseLocked() const {
1206  return fullscreen_controller_->IsMouseLocked();
1207}
1208
1209void Browser::OnWindowDidShow() {
1210  if (window_has_shown_)
1211    return;
1212  window_has_shown_ = true;
1213
1214// CurrentProcessInfo::CreationTime() is currently only implemented on Mac and
1215// Windows.
1216#if defined(OS_MACOSX) || defined(OS_WIN)
1217  // Measure the latency from startup till the first browser window becomes
1218  // visible.
1219  static bool is_first_browser_window = true;
1220  if (is_first_browser_window &&
1221      !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1222    is_first_browser_window = false;
1223    const base::Time* process_creation_time =
1224        base::CurrentProcessInfo::CreationTime();
1225
1226    if (process_creation_time) {
1227      UMA_HISTOGRAM_LONG_TIMES(
1228          "Startup.BrowserWindowDisplay",
1229          base::Time::Now() - *process_creation_time);
1230    }
1231  }
1232#endif  // defined(OS_MACOSX) || defined(OS_WIN)
1233
1234  // Nothing to do for non-tabbed windows.
1235  if (!is_type_tabbed())
1236    return;
1237
1238  // Show any pending global error bubble.
1239  GlobalErrorService* service =
1240      GlobalErrorServiceFactory::GetForProfile(profile());
1241  GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1242  if (error)
1243    error->ShowBubbleView(this);
1244}
1245
1246void Browser::ShowFirstRunBubble() {
1247  window()->GetLocationBar()->ShowFirstRunBubble();
1248}
1249
1250void Browser::ShowDownload(content::DownloadItem* download) {
1251  if (!window())
1252    return;
1253
1254  // If the download occurs in a new tab, and it's not a save page
1255  // download (started before initial navigation completed) close it.
1256  WebContents* source = download->GetWebContents();
1257  if (source && source->GetController().IsInitialNavigation() &&
1258      tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1259    CloseContents(source);
1260  }
1261
1262  // Some (app downloads) are not supposed to appear on the shelf.
1263  if (!DownloadItemModel(download).ShouldShowInShelf())
1264    return;
1265
1266  // GetDownloadShelf creates the download shelf if it was not yet created.
1267  DownloadShelf* shelf = window()->GetDownloadShelf();
1268  shelf->AddDownload(download);
1269}
1270
1271///////////////////////////////////////////////////////////////////////////////
1272// Browser, content::WebContentsDelegate implementation:
1273
1274WebContents* Browser::OpenURLFromTab(WebContents* source,
1275                                     const OpenURLParams& params) {
1276  chrome::NavigateParams nav_params(this, params.url, params.transition);
1277  FillNavigateParamsFromOpenURLParams(&nav_params, params);
1278  nav_params.source_contents = source;
1279  nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1280  nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1281  nav_params.user_gesture = params.user_gesture;
1282
1283  PopupBlockerTabHelper* popup_blocker_helper = NULL;
1284  if (source)
1285    popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1286
1287  if (!CommandLine::ForCurrentProcess()->HasSwitch(
1288          switches::kDisableBetterPopupBlocking) &&
1289      popup_blocker_helper) {
1290
1291    if ((params.disposition == NEW_POPUP ||
1292         params.disposition == NEW_FOREGROUND_TAB ||
1293         params.disposition == NEW_BACKGROUND_TAB ||
1294         params.disposition == NEW_WINDOW) &&
1295        !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1296                                    switches::kDisablePopupBlocking)) {
1297      if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1298                                                WebWindowFeatures())) {
1299        return NULL;
1300      }
1301    }
1302  }
1303
1304  chrome::Navigate(&nav_params);
1305
1306  return nav_params.target_contents;
1307}
1308
1309void Browser::NavigationStateChanged(const WebContents* source,
1310                                     unsigned changed_flags) {
1311  // Only update the UI when something visible has changed.
1312  if (changed_flags)
1313    ScheduleUIUpdate(source, changed_flags);
1314
1315  // We can synchronously update commands since they will only change once per
1316  // navigation, so we don't have to worry about flickering. We do, however,
1317  // need to update the command state early on load to always present usable
1318  // actions in the face of slow-to-commit pages.
1319  if (changed_flags & (content::INVALIDATE_TYPE_URL |
1320                       content::INVALIDATE_TYPE_LOAD))
1321    command_controller_->TabStateChanged();
1322}
1323
1324void Browser::AddNewContents(WebContents* source,
1325                             WebContents* new_contents,
1326                             WindowOpenDisposition disposition,
1327                             const gfx::Rect& initial_pos,
1328                             bool user_gesture,
1329                             bool* was_blocked) {
1330  chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1331                         user_gesture, was_blocked);
1332}
1333
1334void Browser::ActivateContents(WebContents* contents) {
1335  tab_strip_model_->ActivateTabAt(
1336      tab_strip_model_->GetIndexOfWebContents(contents), false);
1337  window_->Activate();
1338}
1339
1340void Browser::DeactivateContents(WebContents* contents) {
1341  window_->Deactivate();
1342}
1343
1344void Browser::LoadingStateChanged(WebContents* source) {
1345  window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1346  window_->UpdateTitleBar();
1347
1348  WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1349  if (source == selected_contents) {
1350    bool is_loading = source->IsLoading();
1351    command_controller_->LoadingStateChanged(is_loading, false);
1352    if (GetStatusBubble()) {
1353      GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1354          tab_strip_model_->GetActiveWebContents())->GetStatusText());
1355    }
1356  }
1357}
1358
1359void Browser::CloseContents(WebContents* source) {
1360  bool can_close_contents;
1361  if (IsFastTabUnloadEnabled())
1362    can_close_contents = fast_unload_controller_->CanCloseContents(source);
1363  else
1364    can_close_contents = unload_controller_->CanCloseContents(source);
1365
1366  if (can_close_contents)
1367    chrome::CloseWebContents(this, source, true);
1368}
1369
1370void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1371  if (!IsPopupOrPanel(source)) {
1372    NOTREACHED() << "moving invalid browser type";
1373    return;
1374  }
1375  window_->SetBounds(pos);
1376}
1377
1378bool Browser::IsPopupOrPanel(const WebContents* source) const {
1379  return is_type_popup();
1380}
1381
1382void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1383                              const GURL& url) {
1384  if (!GetStatusBubble())
1385    return;
1386
1387  if (source == tab_strip_model_->GetActiveWebContents()) {
1388    PrefService* prefs = profile_->GetPrefs();
1389    GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1390  }
1391}
1392
1393void Browser::ContentsMouseEvent(
1394    WebContents* source, const gfx::Point& location, bool motion) {
1395  if (!GetStatusBubble())
1396    return;
1397
1398  if (source == tab_strip_model_->GetActiveWebContents()) {
1399    GetStatusBubble()->MouseMoved(location, !motion);
1400    if (!motion)
1401      GetStatusBubble()->SetURL(GURL(), std::string());
1402  }
1403}
1404
1405void Browser::ContentsZoomChange(bool zoom_in) {
1406  chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1407}
1408
1409void Browser::WebContentsFocused(WebContents* contents) {
1410  window_->WebContentsFocused(contents);
1411}
1412
1413bool Browser::TakeFocus(content::WebContents* source,
1414                        bool reverse) {
1415  content::NotificationService::current()->Notify(
1416      chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1417      content::Source<Browser>(this),
1418      content::NotificationService::NoDetails());
1419  return false;
1420}
1421
1422gfx::Rect Browser::GetRootWindowResizerRect() const {
1423  return window_->GetRootWindowResizerRect();
1424}
1425
1426void Browser::BeforeUnloadFired(WebContents* web_contents,
1427                                bool proceed,
1428                                bool* proceed_to_fire_unload) {
1429  if (IsFastTabUnloadEnabled()) {
1430    *proceed_to_fire_unload =
1431        fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1432  } else {
1433    *proceed_to_fire_unload =
1434        unload_controller_->BeforeUnloadFired(web_contents, proceed);
1435  }
1436}
1437
1438bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1439  const content::NavigationEntry* entry =
1440      source->GetController().GetActiveEntry();
1441  if (entry) {
1442    GURL url = entry->GetURL();
1443    GURL virtual_url = entry->GetVirtualURL();
1444    if ((url.SchemeIs(chrome::kChromeUIScheme) &&
1445        url.host() == chrome::kChromeUINewTabHost) ||
1446        (virtual_url.SchemeIs(chrome::kChromeUIScheme) &&
1447        virtual_url.host() == chrome::kChromeUINewTabHost)) {
1448      return true;
1449    }
1450  }
1451
1452  return chrome::NavEntryIsInstantNTP(source, entry);
1453}
1454
1455void Browser::SetFocusToLocationBar(bool select_all) {
1456  // Two differences between this and FocusLocationBar():
1457  // (1) This doesn't get recorded in user metrics, since it's called
1458  //     internally.
1459  // (2) This checks whether the location bar can be focused, and if not, clears
1460  //     the focus.  FocusLocationBar() is only reached when the location bar is
1461  //     focusable, but this may be reached at other times, e.g. while in
1462  //     fullscreen mode, where we need to leave focus in a consistent state.
1463  window_->SetFocusToLocationBar(select_all);
1464}
1465
1466void Browser::RenderWidgetShowing() {
1467  window_->DisableInactiveFrame();
1468}
1469
1470int Browser::GetExtraRenderViewHeight() const {
1471  return window_->GetExtraRenderViewHeight();
1472}
1473
1474void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1475  DCHECK(source);
1476  chrome::ViewSource(this, source);
1477}
1478
1479void Browser::ViewSourceForFrame(WebContents* source,
1480                                 const GURL& frame_url,
1481                                 const content::PageState& frame_page_state) {
1482  DCHECK(source);
1483  chrome::ViewSource(this, source, frame_url, frame_page_state);
1484}
1485
1486void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1487  TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1488                                source);
1489}
1490
1491bool Browser::ShouldCreateWebContents(
1492    WebContents* web_contents,
1493    int route_id,
1494    WindowContainerType window_container_type,
1495    const string16& frame_name,
1496    const GURL& target_url,
1497    const content::Referrer& referrer,
1498    WindowOpenDisposition disposition,
1499    const WebWindowFeatures& features,
1500    bool user_gesture,
1501    bool opener_suppressed) {
1502  if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1503    // If a BackgroundContents is created, suppress the normal WebContents.
1504    return !MaybeCreateBackgroundContents(
1505        route_id, web_contents, frame_name, target_url);
1506  }
1507
1508  return true;
1509}
1510
1511void Browser::WebContentsCreated(WebContents* source_contents,
1512                                 int64 source_frame_id,
1513                                 const string16& frame_name,
1514                                 const GURL& target_url,
1515                                 WebContents* new_contents) {
1516  // Adopt the WebContents now, so all observers are in place, as the network
1517  // requests for its initial navigation will start immediately. The WebContents
1518  // will later be inserted into this browser using Browser::Navigate via
1519  // AddNewContents.
1520  BrowserTabContents::AttachTabHelpers(new_contents);
1521
1522  // Notify.
1523  RetargetingDetails details;
1524  details.source_web_contents = source_contents;
1525  details.source_frame_id = source_frame_id;
1526  details.target_url = target_url;
1527  details.target_web_contents = new_contents;
1528  details.not_yet_in_tabstrip = true;
1529  content::NotificationService::current()->Notify(
1530      chrome::NOTIFICATION_RETARGETING,
1531      content::Source<Profile>(profile_),
1532      content::Details<RetargetingDetails>(&details));
1533}
1534
1535void Browser::RendererUnresponsive(WebContents* source) {
1536  // Ignore hangs if a tab is blocked.
1537  int index = tab_strip_model_->GetIndexOfWebContents(source);
1538  DCHECK_NE(TabStripModel::kNoTab, index);
1539  if (tab_strip_model_->IsTabBlocked(index))
1540    return;
1541
1542  chrome::ShowHungRendererDialog(source);
1543}
1544
1545void Browser::RendererResponsive(WebContents* source) {
1546  chrome::HideHungRendererDialog(source);
1547}
1548
1549void Browser::WorkerCrashed(WebContents* source) {
1550  SimpleAlertInfoBarDelegate::Create(
1551      InfoBarService::FromWebContents(source), InfoBarDelegate::kNoIconID,
1552      l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1553}
1554
1555void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1556  if (web_contents == tab_strip_model_->GetActiveWebContents())
1557    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1558}
1559
1560void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1561  if (web_contents == tab_strip_model_->GetActiveWebContents())
1562    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1563}
1564
1565content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1566  return GetJavaScriptDialogManagerInstance();
1567}
1568
1569content::ColorChooser* Browser::OpenColorChooser(WebContents* web_contents,
1570                                                 SkColor initial_color) {
1571  return chrome::ShowColorChooser(web_contents, initial_color);
1572}
1573
1574void Browser::RunFileChooser(WebContents* web_contents,
1575                             const content::FileChooserParams& params) {
1576  FileSelectHelper::RunFileChooser(web_contents, params);
1577}
1578
1579void Browser::EnumerateDirectory(WebContents* web_contents,
1580                                 int request_id,
1581                                 const base::FilePath& path) {
1582  FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1583}
1584
1585void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1586                                         bool enter_fullscreen) {
1587  fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1588                                                     enter_fullscreen);
1589}
1590
1591bool Browser::IsFullscreenForTabOrPending(
1592    const WebContents* web_contents) const {
1593  return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1594}
1595
1596void Browser::JSOutOfMemory(WebContents* web_contents) {
1597  JSOutOfMemoryHelper(web_contents);
1598}
1599
1600void Browser::RegisterProtocolHandler(WebContents* web_contents,
1601                                      const std::string& protocol,
1602                                      const GURL& url,
1603                                      const string16& title,
1604                                      bool user_gesture) {
1605  RegisterProtocolHandlerHelper(
1606      web_contents, protocol, url, title, user_gesture, window());
1607}
1608
1609void Browser::UpdatePreferredSize(WebContents* source,
1610                                  const gfx::Size& pref_size) {
1611  window_->UpdatePreferredSize(source, pref_size);
1612}
1613
1614void Browser::ResizeDueToAutoResize(WebContents* source,
1615                                    const gfx::Size& new_size) {
1616  window_->ResizeDueToAutoResize(source, new_size);
1617}
1618
1619void Browser::FindReply(WebContents* web_contents,
1620                        int request_id,
1621                        int number_of_matches,
1622                        const gfx::Rect& selection_rect,
1623                        int active_match_ordinal,
1624                        bool final_update) {
1625  FindReplyHelper(web_contents, request_id, number_of_matches, selection_rect,
1626                  active_match_ordinal, final_update);
1627}
1628
1629void Browser::RequestToLockMouse(WebContents* web_contents,
1630                                 bool user_gesture,
1631                                 bool last_unlocked_by_target) {
1632  fullscreen_controller_->RequestToLockMouse(web_contents,
1633                                             user_gesture,
1634                                             last_unlocked_by_target);
1635}
1636
1637void Browser::LostMouseLock() {
1638  fullscreen_controller_->LostMouseLock();
1639}
1640
1641void Browser::RequestMediaAccessPermission(
1642    content::WebContents* web_contents,
1643    const content::MediaStreamRequest& request,
1644    const content::MediaResponseCallback& callback) {
1645  const extensions::Extension* extension = NULL;
1646  GURL origin(request.security_origin);
1647  if (origin.SchemeIs(extensions::kExtensionScheme)) {
1648    ExtensionService* extensions_service =
1649        extensions::ExtensionSystem::Get(profile_)->extension_service();
1650    extension = extensions_service->extensions()->GetByID(origin.host());
1651    DCHECK(extension);
1652  }
1653
1654  MediaCaptureDevicesDispatcher::GetInstance()->ProcessMediaAccessRequest(
1655      web_contents, request, callback, extension);
1656}
1657
1658bool Browser::RequestPpapiBrokerPermission(
1659    WebContents* web_contents,
1660    const GURL& url,
1661    const base::FilePath& plugin_path,
1662    const base::Callback<void(bool)>& callback) {
1663  PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1664  return true;
1665}
1666
1667///////////////////////////////////////////////////////////////////////////////
1668// Browser, CoreTabHelperDelegate implementation:
1669
1670void Browser::SwapTabContents(content::WebContents* old_contents,
1671                              content::WebContents* new_contents) {
1672  int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1673  DCHECK_NE(TabStripModel::kNoTab, index);
1674  tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1675}
1676
1677bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1678  return chrome::CanReload(this);
1679}
1680
1681bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1682  return chrome::CanSavePage(this);
1683}
1684
1685///////////////////////////////////////////////////////////////////////////////
1686// Browser, SearchEngineTabHelperDelegate implementation:
1687
1688void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1689                                       Profile* profile) {
1690  window()->ConfirmAddSearchProvider(template_url, profile);
1691}
1692
1693///////////////////////////////////////////////////////////////////////////////
1694// Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1695
1696void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1697                                    bool blocked) {
1698  int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1699  if (index == TabStripModel::kNoTab) {
1700    NOTREACHED();
1701    return;
1702  }
1703  tab_strip_model_->SetTabBlocked(index, blocked);
1704  if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1705    web_contents->GetView()->Focus();
1706}
1707
1708web_modal::WebContentsModalDialogHost*
1709Browser::GetWebContentsModalDialogHost() {
1710  return window_->GetWebContentsModalDialogHost();
1711}
1712
1713///////////////////////////////////////////////////////////////////////////////
1714// Browser, BlockedContentTabHelperDelegate implementation:
1715
1716content::WebContents* Browser::GetConstrainingWebContents(
1717    content::WebContents* source) {
1718  return source;
1719}
1720
1721///////////////////////////////////////////////////////////////////////////////
1722// Browser, BookmarkTabHelperDelegate implementation:
1723
1724void Browser::URLStarredChanged(content::WebContents* web_contents,
1725                                bool starred) {
1726  if (web_contents == tab_strip_model_->GetActiveWebContents())
1727    window_->SetStarredState(starred);
1728}
1729
1730///////////////////////////////////////////////////////////////////////////////
1731// Browser, ZoomObserver implementation:
1732
1733void Browser::OnZoomChanged(content::WebContents* source,
1734                            bool can_show_bubble) {
1735  if (source == tab_strip_model_->GetActiveWebContents()) {
1736    // Only show the zoom bubble for zoom changes in the active window.
1737    window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive());
1738  }
1739}
1740
1741///////////////////////////////////////////////////////////////////////////////
1742// Browser, ui::SelectFileDialog::Listener implementation:
1743
1744void Browser::FileSelected(const base::FilePath& path, int index,
1745                           void* params) {
1746  FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1747}
1748
1749void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1750                                        int index,
1751                                        void* params) {
1752  profile_->set_last_selected_directory(file_info.file_path.DirName());
1753
1754  GURL url = net::FilePathToFileURL(file_info.local_path);
1755
1756#if defined(OS_CHROMEOS)
1757  drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1758#endif
1759
1760  if (url.is_empty())
1761    return;
1762
1763  OpenURL(OpenURLParams(
1764      url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1765}
1766
1767///////////////////////////////////////////////////////////////////////////////
1768// Browser, content::NotificationObserver implementation:
1769
1770void Browser::Observe(int type,
1771                      const content::NotificationSource& source,
1772                      const content::NotificationDetails& details) {
1773  switch (type) {
1774    case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
1775      if (window()->GetLocationBar())
1776        window()->GetLocationBar()->UpdatePageActions();
1777
1778      const extensions::UnloadedExtensionInfo* extension_info =
1779          content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1780
1781      // Close any tabs from the unloaded extension, unless it's terminated,
1782      // in which case let the sad tabs remain.
1783      if (extension_info->reason != extension_misc::UNLOAD_REASON_TERMINATE) {
1784        const Extension* extension = extension_info->extension;
1785        // Iterate backwards as we may remove items while iterating.
1786        for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1787          WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1788          // Two cases are handled here:
1789          // - The scheme check is for when an extension page is loaded in a
1790          //   tab, e.g. chrome-extension://id/page.html.
1791          // - The extension_app check is for apps, which can have non-extension
1792          //   schemes, e.g. https://mail.google.com if you have the Gmail app
1793          //   installed.
1794          if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1795               web_contents->GetURL().host() == extension->id()) ||
1796              (extensions::TabHelper::FromWebContents(
1797                   web_contents)->extension_app() == extension)) {
1798            tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1799          }
1800        }
1801      }
1802      break;
1803    }
1804
1805    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1806      Profile* profile = content::Source<Profile>(source).ptr();
1807      if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1808        window()->GetLocationBar()->InvalidatePageActions();
1809      break;
1810    }
1811
1812    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
1813    case chrome::NOTIFICATION_EXTENSION_LOADED:
1814      // During window creation on Windows we may end up calling into
1815      // SHAppBarMessage, which internally spawns a nested message loop. This
1816      // makes it possible for us to end up here before window creation has
1817      // completed, at which point window_ is NULL. See 94752 for details.
1818      if (window() && window()->GetLocationBar())
1819        window()->GetLocationBar()->UpdatePageActions();
1820      break;
1821
1822#if defined(ENABLE_THEMES)
1823    case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1824      window()->UserChangedTheme();
1825      break;
1826#endif
1827
1828    case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1829      WebContents* web_contents = content::Source<WebContents>(source).ptr();
1830      if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1831        LocationBar* location_bar = window()->GetLocationBar();
1832        if (location_bar)
1833          location_bar->UpdateContentSettingsIcons();
1834      }
1835      break;
1836    }
1837
1838    default:
1839      NOTREACHED() << "Got a notification we didn't register for.";
1840  }
1841}
1842
1843///////////////////////////////////////////////////////////////////////////////
1844// Browser, Command and state updating (private):
1845
1846void Browser::OnDevToolsDisabledChanged() {
1847  if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
1848    content::DevToolsManager::GetInstance()->CloseAllClientHosts();
1849}
1850
1851///////////////////////////////////////////////////////////////////////////////
1852// Browser, UI update coalescing and handling (private):
1853
1854void Browser::UpdateToolbar(bool should_restore_state) {
1855  window_->UpdateToolbar(tab_strip_model_->GetActiveWebContents(),
1856                         should_restore_state);
1857}
1858
1859void Browser::UpdateSearchState(WebContents* contents) {
1860  if (chrome::IsInstantExtendedAPIEnabled())
1861    search_delegate_->OnTabActivated(contents);
1862}
1863
1864void Browser::ScheduleUIUpdate(const WebContents* source,
1865                               unsigned changed_flags) {
1866  if (!source)
1867    return;
1868
1869  // Do some synchronous updates.
1870  if (changed_flags & content::INVALIDATE_TYPE_URL &&
1871      source == tab_strip_model_->GetActiveWebContents()) {
1872    // Only update the URL for the current tab. Note that we do not update
1873    // the navigation commands since those would have already been updated
1874    // synchronously by NavigationStateChanged.
1875    UpdateToolbar(false);
1876    changed_flags &= ~content::INVALIDATE_TYPE_URL;
1877  }
1878  if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
1879    // Update the loading state synchronously. This is so the throbber will
1880    // immediately start/stop, which gives a more snappy feel. We want to do
1881    // this for any tab so they start & stop quickly.
1882    tab_strip_model_->UpdateWebContentsStateAt(
1883        tab_strip_model_->GetIndexOfWebContents(source),
1884        TabStripModelObserver::LOADING_ONLY);
1885    // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
1886    // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
1887    // changed_flags.
1888  }
1889
1890  if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
1891    // To correctly calculate whether the title changed while not loading
1892    // we need to process the update synchronously. This state only matters for
1893    // the TabStripModel, so we notify the TabStripModel now and notify others
1894    // asynchronously.
1895    tab_strip_model_->UpdateWebContentsStateAt(
1896        tab_strip_model_->GetIndexOfWebContents(source),
1897        TabStripModelObserver::TITLE_NOT_LOADING);
1898  }
1899
1900  // If the only updates were synchronously handled above, we're done.
1901  if (changed_flags == 0)
1902    return;
1903
1904  // Save the dirty bits.
1905  scheduled_updates_[source] |= changed_flags;
1906
1907  if (!chrome_updater_factory_.HasWeakPtrs()) {
1908    // No task currently scheduled, start another.
1909    base::MessageLoop::current()->PostDelayedTask(
1910        FROM_HERE,
1911        base::Bind(&Browser::ProcessPendingUIUpdates,
1912                   chrome_updater_factory_.GetWeakPtr()),
1913        base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
1914  }
1915}
1916
1917void Browser::ProcessPendingUIUpdates() {
1918#ifndef NDEBUG
1919  // Validate that all tabs we have pending updates for exist. This is scary
1920  // because the pending list must be kept in sync with any detached or
1921  // deleted tabs.
1922  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1923       i != scheduled_updates_.end(); ++i) {
1924    bool found = false;
1925    for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
1926      if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
1927        found = true;
1928        break;
1929      }
1930    }
1931    DCHECK(found);
1932  }
1933#endif
1934
1935  chrome_updater_factory_.InvalidateWeakPtrs();
1936
1937  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1938       i != scheduled_updates_.end(); ++i) {
1939    // Do not dereference |contents|, it may be out-of-date!
1940    const WebContents* contents = i->first;
1941    unsigned flags = i->second;
1942
1943    if (contents == tab_strip_model_->GetActiveWebContents()) {
1944      // Updates that only matter when the tab is selected go here.
1945
1946      if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
1947        LocationBar* location_bar = window()->GetLocationBar();
1948        if (location_bar)
1949          location_bar->UpdatePageActions();
1950      }
1951      // Updating the URL happens synchronously in ScheduleUIUpdate.
1952      if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
1953        GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1954            tab_strip_model_->GetActiveWebContents())->GetStatusText());
1955      }
1956
1957      if (flags & (content::INVALIDATE_TYPE_TAB |
1958                   content::INVALIDATE_TYPE_TITLE)) {
1959        window_->UpdateTitleBar();
1960      }
1961    }
1962
1963    // Updates that don't depend upon the selected state go here.
1964    if (flags &
1965        (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
1966      tab_strip_model_->UpdateWebContentsStateAt(
1967          tab_strip_model_->GetIndexOfWebContents(contents),
1968          TabStripModelObserver::ALL);
1969    }
1970
1971    // Update the bookmark bar. It may happen that the tab is crashed, and if
1972    // so, the bookmark bar should be hidden.
1973    if (flags & content::INVALIDATE_TYPE_TAB)
1974      UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1975
1976    // We don't need to process INVALIDATE_STATE, since that's not visible.
1977  }
1978
1979  scheduled_updates_.clear();
1980}
1981
1982void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
1983  if (!contents)
1984    return;
1985
1986  UpdateMap::iterator i = scheduled_updates_.find(contents);
1987  if (i != scheduled_updates_.end())
1988    scheduled_updates_.erase(i);
1989}
1990
1991///////////////////////////////////////////////////////////////////////////////
1992// Browser, Getters for UI (private):
1993
1994StatusBubble* Browser::GetStatusBubble() {
1995  // In kiosk and exclusive app mode, we want to always hide the status bubble.
1996  if (chrome::IsRunningInAppMode())
1997    return NULL;
1998
1999  return window_ ? window_->GetStatusBubble() : NULL;
2000}
2001
2002///////////////////////////////////////////////////////////////////////////////
2003// Browser, Session restore functions (private):
2004
2005void Browser::SyncHistoryWithTabs(int index) {
2006  SessionService* session_service =
2007      SessionServiceFactory::GetForProfileIfExisting(profile());
2008  if (session_service) {
2009    for (int i = index; i < tab_strip_model_->count(); ++i) {
2010      WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2011      if (web_contents) {
2012        SessionTabHelper* session_tab_helper =
2013            SessionTabHelper::FromWebContents(web_contents);
2014        session_service->SetTabIndexInWindow(
2015            session_id(), session_tab_helper->session_id(), i);
2016        session_service->SetPinnedState(
2017            session_id(),
2018            session_tab_helper->session_id(),
2019            tab_strip_model_->IsTabPinned(i));
2020      }
2021    }
2022  }
2023}
2024
2025///////////////////////////////////////////////////////////////////////////////
2026// Browser, In-progress download termination handling (private):
2027
2028bool Browser::CanCloseWithInProgressDownloads() {
2029  // If we've prompted, we need to hear from the user before we
2030  // can close.
2031  if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2032    return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2033
2034  int num_downloads_blocking;
2035  if (DOWNLOAD_CLOSE_OK ==
2036      OkToCloseWithInProgressDownloads(&num_downloads_blocking))
2037    return true;
2038
2039  // Closing this window will kill some downloads; prompt to make sure
2040  // that's ok.
2041  cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2042  window_->ConfirmBrowserCloseWithPendingDownloads();
2043
2044  // Return false so the browser does not close.  We'll close if the user
2045  // confirms in the dialog.
2046  return false;
2047}
2048
2049///////////////////////////////////////////////////////////////////////////////
2050// Browser, Assorted utility functions (private):
2051
2052void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
2053  // WebContents...
2054  web_contents->SetDelegate(delegate);
2055
2056  // ...and all the helpers.
2057  BlockedContentTabHelper::FromWebContents(web_contents)->
2058      set_delegate(delegate);
2059  BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2060  WebContentsModalDialogManager::FromWebContents(web_contents)->
2061      set_delegate(delegate);
2062  CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2063  SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2064  ZoomController::FromWebContents(web_contents)->set_observer(delegate);
2065}
2066
2067void Browser::CloseFrame() {
2068  window_->Close();
2069}
2070
2071void Browser::TabDetachedAtImpl(content::WebContents* contents,
2072                                int index,
2073                                DetachType type) {
2074  if (type == DETACH_TYPE_DETACH) {
2075    // Save the current location bar state, but only if the tab being detached
2076    // is the selected tab.  Because saving state can conditionally revert the
2077    // location bar, saving the current tab's location bar state to a
2078    // non-selected tab can corrupt both tabs.
2079    if (contents == tab_strip_model_->GetActiveWebContents()) {
2080      LocationBar* location_bar = window()->GetLocationBar();
2081      if (location_bar)
2082        location_bar->SaveStateToContents(contents);
2083    }
2084
2085    if (!tab_strip_model_->closing_all())
2086      SyncHistoryWithTabs(0);
2087  }
2088
2089  SetAsDelegate(contents, NULL);
2090  RemoveScheduledUpdatesFor(contents);
2091
2092  if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2093    find_bar_controller_->ChangeWebContents(NULL);
2094  }
2095
2096  // Stop observing search model changes for this tab.
2097  search_delegate_->OnTabDetached(contents);
2098
2099  for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2100    if (interstitial_observers_[i]->web_contents() != contents)
2101      continue;
2102
2103    delete interstitial_observers_[i];
2104    interstitial_observers_.erase(interstitial_observers_.begin() + i);
2105    return;
2106  }
2107}
2108
2109bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2110                                        bool check_fullscreen) const {
2111  bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2112
2113  unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2114
2115  if (is_type_tabbed())
2116    features |= FEATURE_BOOKMARKBAR;
2117
2118  if (!hide_ui_for_fullscreen) {
2119    if (!is_type_tabbed())
2120      features |= FEATURE_TITLEBAR;
2121
2122    if (is_type_tabbed())
2123      features |= FEATURE_TABSTRIP;
2124
2125    if (is_type_tabbed())
2126      features |= FEATURE_TOOLBAR;
2127
2128    if (!is_app())
2129      features |= FEATURE_LOCATIONBAR;
2130  }
2131  return !!(features & feature);
2132}
2133
2134void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2135  BookmarkBar::State state;
2136  // The bookmark bar is hidden in fullscreen mode, unless on the new tab page.
2137  if (browser_defaults::bookmarks_enabled &&
2138      profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2139      !ShouldHideUIForFullscreen()) {
2140    state = BookmarkBar::SHOW;
2141  } else {
2142    WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2143    BookmarkTabHelper* bookmark_tab_helper =
2144        web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2145    if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2146      state = BookmarkBar::DETACHED;
2147    else
2148      state = BookmarkBar::HIDDEN;
2149  }
2150
2151  if (state == bookmark_bar_state_)
2152    return;
2153
2154  bookmark_bar_state_ = state;
2155
2156  if (!window_)
2157    return;  // This is called from the constructor when window_ is NULL.
2158
2159  if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2160    // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2161    // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2162    // end up querying state once they process the tab switch.
2163    return;
2164  }
2165
2166  bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2167  window_->BookmarkBarStateChanged(shouldAnimate ?
2168      BookmarkBar::ANIMATE_STATE_CHANGE :
2169      BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2170}
2171
2172bool Browser::ShouldHideUIForFullscreen() const {
2173  // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2174  // keep the controls in a slide-down panel.
2175  return window_ && window_->ShouldHideUIForFullscreen();
2176}
2177
2178bool Browser::MaybeCreateBackgroundContents(int route_id,
2179                                            WebContents* opener_web_contents,
2180                                            const string16& frame_name,
2181                                            const GURL& target_url) {
2182  GURL opener_url = opener_web_contents->GetURL();
2183  ExtensionService* extensions_service =
2184      extensions::ExtensionSystem::Get(profile_)->extension_service();
2185
2186  if (!opener_url.is_valid() ||
2187      frame_name.empty() ||
2188      !extensions_service ||
2189      !extensions_service->is_ready())
2190    return false;
2191
2192  // Only hosted apps have web extents, so this ensures that only hosted apps
2193  // can create BackgroundContents. We don't have to check for background
2194  // permission as that is checked in RenderMessageFilter when the CreateWindow
2195  // message is processed.
2196  const Extension* extension =
2197      extensions_service->extensions()->GetHostedAppByURL(opener_url);
2198  if (!extension)
2199    return false;
2200
2201  // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2202  BackgroundContentsService* service =
2203      BackgroundContentsServiceFactory::GetForProfile(profile_);
2204  if (!service)
2205    return false;
2206
2207  // Ensure that we're trying to open this from the extension's process.
2208  SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2209  extensions::ProcessMap* process_map = extensions_service->process_map();
2210  if (!opener_site_instance->GetProcess() ||
2211      !process_map->Contains(
2212          extension->id(), opener_site_instance->GetProcess()->GetID())) {
2213    return false;
2214  }
2215
2216  // Only allow a single background contents per app.
2217  bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2218  BackgroundContents* existing =
2219      service->GetAppBackgroundContents(ASCIIToUTF16(extension->id()));
2220  if (existing) {
2221    // For non-scriptable background contents, ignore the request altogether,
2222    // (returning true, so that a regular WebContents isn't created either).
2223    if (!allow_js_access)
2224      return true;
2225    // For scriptable background pages, if one already exists, close it (even
2226    // if it was specified in the manifest).
2227    DLOG(INFO) << "Closing existing BackgroundContents for " << opener_url;
2228    delete existing;
2229  }
2230
2231  // If script access is not allowed, create the the background contents in a
2232  // new SiteInstance, so that a separate process is used.
2233  scoped_refptr<content::SiteInstance> site_instance =
2234      allow_js_access ?
2235      opener_site_instance :
2236      content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2237
2238  // Passed all the checks, so this should be created as a BackgroundContents.
2239  BackgroundContents* contents =
2240      service->CreateBackgroundContents(site_instance.get(),
2241                                        route_id,
2242                                        profile_,
2243                                        frame_name,
2244                                        ASCIIToUTF16(extension->id()));
2245
2246  // When a separate process is used, the original renderer cannot access the
2247  // new window later, thus we need to navigate the window now.
2248  if (contents && !allow_js_access) {
2249    contents->web_contents()->GetController().LoadURL(
2250        target_url,
2251        content::Referrer(),
2252        content::PAGE_TRANSITION_LINK,
2253        std::string());  // No extra headers.
2254  }
2255
2256  return contents != NULL;
2257}
2258