browser.cc revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/ui/browser.h"
6
7#if defined(OS_WIN)
8#include <windows.h>
9#include <shellapi.h>
10#endif  // defined(OS_WIN)
11
12#include <algorithm>
13#include <string>
14
15#include "base/base_paths.h"
16#include "base/bind.h"
17#include "base/command_line.h"
18#include "base/logging.h"
19#include "base/metrics/histogram.h"
20#include "base/path_service.h"
21#include "base/prefs/pref_service.h"
22#include "base/process_info.h"
23#include "base/string_util.h"
24#include "base/stringprintf.h"
25#include "base/strings/string_number_conversions.h"
26#include "base/threading/thread.h"
27#include "base/threading/thread_restrictions.h"
28#include "base/time.h"
29#include "base/utf_string_conversions.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_page_zoom.h"
41#include "chrome/browser/content_settings/host_content_settings_map.h"
42#include "chrome/browser/content_settings/tab_specific_content_settings.h"
43#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
44#include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
45#include "chrome/browser/devtools/devtools_toggle_action.h"
46#include "chrome/browser/devtools/devtools_window.h"
47#include "chrome/browser/download/download_item_model.h"
48#include "chrome/browser/download/download_service.h"
49#include "chrome/browser/download/download_service_factory.h"
50#include "chrome/browser/download/download_shelf.h"
51#include "chrome/browser/extensions/browser_extension_window_controller.h"
52#include "chrome/browser/extensions/extension_prefs.h"
53#include "chrome/browser/extensions/extension_service.h"
54#include "chrome/browser/extensions/extension_system.h"
55#include "chrome/browser/extensions/tab_helper.h"
56#include "chrome/browser/favicon/favicon_tab_helper.h"
57#include "chrome/browser/file_select_helper.h"
58#include "chrome/browser/first_run/first_run.h"
59#include "chrome/browser/google/google_url_tracker.h"
60#include "chrome/browser/infobars/infobar_service.h"
61#include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
62#include "chrome/browser/lifetime/application_lifetime.h"
63#include "chrome/browser/media/media_capture_devices_dispatcher.h"
64#include "chrome/browser/net/url_fixer_upper.h"
65#include "chrome/browser/notifications/notification_ui_manager.h"
66#include "chrome/browser/pepper_broker_infobar_delegate.h"
67#include "chrome/browser/prefs/incognito_mode_prefs.h"
68#include "chrome/browser/printing/cloud_print/cloud_print_setup_flow.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/blocked_content/blocked_content_tab_helper.h"
91#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
92#include "chrome/browser/ui/browser_command_controller.h"
93#include "chrome/browser/ui/browser_commands.h"
94#include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
95#include "chrome/browser/ui/browser_dialogs.h"
96#include "chrome/browser/ui/browser_finder.h"
97#include "chrome/browser/ui/browser_instant_controller.h"
98#include "chrome/browser/ui/browser_iterator.h"
99#include "chrome/browser/ui/browser_list.h"
100#include "chrome/browser/ui/browser_navigator.h"
101#include "chrome/browser/ui/browser_tab_contents.h"
102#include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
103#include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
104#include "chrome/browser/ui/browser_tabstrip.h"
105#include "chrome/browser/ui/browser_toolbar_model_delegate.h"
106#include "chrome/browser/ui/browser_ui_prefs.h"
107#include "chrome/browser/ui/browser_window.h"
108#include "chrome/browser/ui/chrome_pages.h"
109#include "chrome/browser/ui/chrome_select_file_policy.h"
110#include "chrome/browser/ui/extensions/shell_window.h"
111#include "chrome/browser/ui/find_bar/find_bar.h"
112#include "chrome/browser/ui/find_bar/find_bar_controller.h"
113#include "chrome/browser/ui/find_bar/find_tab_helper.h"
114#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
115#include "chrome/browser/ui/global_error/global_error.h"
116#include "chrome/browser/ui/global_error/global_error_service.h"
117#include "chrome/browser/ui/global_error/global_error_service_factory.h"
118#include "chrome/browser/ui/omnibox/location_bar.h"
119#include "chrome/browser/ui/search/search_delegate.h"
120#include "chrome/browser/ui/search/search_model.h"
121#include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
122#include "chrome/browser/ui/singleton_tabs.h"
123#include "chrome/browser/ui/status_bubble.h"
124#include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
125#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
126#include "chrome/browser/ui/tab_modal_confirm_dialog.h"
127#include "chrome/browser/ui/tabs/dock_info.h"
128#include "chrome/browser/ui/tabs/tab_menu_model.h"
129#include "chrome/browser/ui/tabs/tab_strip_model.h"
130#include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
131#include "chrome/browser/ui/unload_controller.h"
132#include "chrome/browser/ui/web_applications/web_app_ui.h"
133#include "chrome/browser/ui/web_contents_modal_dialog_manager.h"
134#include "chrome/browser/ui/webui/signin/login_ui_service.h"
135#include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
136#include "chrome/browser/ui/window_sizer/window_sizer.h"
137#include "chrome/browser/ui/zoom/zoom_controller.h"
138#include "chrome/browser/upgrade_detector.h"
139#include "chrome/browser/web_applications/web_app.h"
140#include "chrome/common/chrome_constants.h"
141#include "chrome/common/chrome_notification_types.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/pref_names.h"
148#include "chrome/common/profiling.h"
149#include "chrome/common/search_types.h"
150#include "chrome/common/startup_metric_utils.h"
151#include "chrome/common/web_apps.h"
152#include "content/public/browser/color_chooser.h"
153#include "content/public/browser/devtools_manager.h"
154#include "content/public/browser/download_item.h"
155#include "content/public/browser/download_manager.h"
156#include "content/public/browser/interstitial_page.h"
157#include "content/public/browser/invalidate_type.h"
158#include "content/public/browser/navigation_controller.h"
159#include "content/public/browser/navigation_entry.h"
160#include "content/public/browser/notification_details.h"
161#include "content/public/browser/notification_service.h"
162#include "content/public/browser/plugin_service.h"
163#include "content/public/browser/render_process_host.h"
164#include "content/public/browser/render_view_host.h"
165#include "content/public/browser/site_instance.h"
166#include "content/public/browser/user_metrics.h"
167#include "content/public/browser/web_contents.h"
168#include "content/public/browser/web_contents_view.h"
169#include "content/public/common/content_restriction.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 "extensions/common/constants.h"
174#include "grit/chromium_strings.h"
175#include "grit/generated_resources.h"
176#include "grit/locale_settings.h"
177#include "grit/theme_resources.h"
178#include "net/base/net_util.h"
179#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
180#include "net/cookies/cookie_monster.h"
181#include "net/url_request/url_request_context.h"
182#include "ui/base/l10n/l10n_util.h"
183#include "ui/base/window_open_disposition.h"
184#include "ui/gfx/point.h"
185#include "ui/shell_dialogs/selected_file_info.h"
186#include "webkit/glue/webkit_glue.h"
187#include "webkit/plugins/webplugininfo.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/browser/autofill_ie_toolbar_import_win.h"
196#include "ui/base/win/shell.h"
197#endif  // OS_WIN
198
199#if defined(OS_CHROMEOS)
200#include "chrome/browser/chromeos/drive/drive_file_system_util.h"
201#endif
202
203#if defined(USE_ASH)
204#include "ash/ash_switches.h"
205#endif
206
207using base::TimeDelta;
208using content::NativeWebKeyboardEvent;
209using content::NavigationController;
210using content::NavigationEntry;
211using content::OpenURLParams;
212using content::PluginService;
213using content::Referrer;
214using content::SiteInstance;
215using content::UserMetricsAction;
216using content::WebContents;
217using extensions::Extension;
218using ui::WebDialogDelegate;
219
220///////////////////////////////////////////////////////////////////////////////
221
222namespace {
223
224// The URL to be loaded to display the "Report a broken page" form.
225const char kBrokenPageUrl[] =
226    "https://www.google.com/support/chrome/bin/request.py?contact_type="
227    "broken_website&format=inproduct&p.page_title=$1&p.page_url=$2";
228
229// How long we wait before updating the browser chrome while loading a page.
230const int kUIUpdateCoalescingTimeMS = 200;
231
232BrowserWindow* CreateBrowserWindow(Browser* browser) {
233  return BrowserWindow::CreateBrowserWindow(browser);
234}
235
236bool ShouldReloadCrashedTab(WebContents* contents) {
237#if defined(OS_CHROMEOS)
238  return contents->IsCrashed();
239#else
240  return false;
241#endif
242}
243
244}  // namespace
245
246////////////////////////////////////////////////////////////////////////////////
247// Browser, CreateParams:
248
249Browser::CreateParams::CreateParams(Profile* profile,
250                                    chrome::HostDesktopType host_desktop_type)
251    : type(TYPE_TABBED),
252      profile(profile),
253      host_desktop_type(host_desktop_type),
254      app_type(APP_TYPE_HOST),
255      initial_show_state(ui::SHOW_STATE_DEFAULT),
256      is_session_restore(false),
257      window(NULL) {
258}
259
260Browser::CreateParams::CreateParams(Type type,
261                                    Profile* profile,
262                                    chrome::HostDesktopType host_desktop_type)
263    : type(type),
264      profile(profile),
265      host_desktop_type(host_desktop_type),
266      app_type(APP_TYPE_HOST),
267      initial_show_state(ui::SHOW_STATE_DEFAULT),
268      is_session_restore(false),
269      window(NULL) {
270}
271
272// static
273Browser::CreateParams Browser::CreateParams::CreateForApp(
274    Type type,
275    const std::string& app_name,
276    const gfx::Rect& window_bounds,
277    Profile* profile,
278    chrome::HostDesktopType host_desktop_type) {
279  DCHECK(type != TYPE_TABBED);
280  DCHECK(!app_name.empty());
281
282  CreateParams params(type, profile, host_desktop_type);
283  params.app_name = app_name;
284  params.app_type = APP_TYPE_CHILD;
285  params.initial_bounds = window_bounds;
286
287  return params;
288}
289
290// static
291Browser::CreateParams Browser::CreateParams::CreateForDevTools(
292    Profile* profile,
293    chrome::HostDesktopType host_desktop_type) {
294  CreateParams params(TYPE_POPUP, profile, host_desktop_type);
295  params.app_name = DevToolsWindow::kDevToolsApp;
296  return params;
297}
298
299////////////////////////////////////////////////////////////////////////////////
300// Browser, InterstitialObserver:
301
302class Browser::InterstitialObserver : public content::WebContentsObserver {
303 public:
304  InterstitialObserver(Browser* browser, content::WebContents* web_contents)
305      : WebContentsObserver(web_contents),
306        browser_(browser) {
307  }
308
309  using content::WebContentsObserver::web_contents;
310
311  virtual void DidAttachInterstitialPage() OVERRIDE {
312    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
313  }
314
315  virtual void DidDetachInterstitialPage() OVERRIDE {
316    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
317  }
318
319 private:
320  Browser* browser_;
321
322  DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
323};
324
325///////////////////////////////////////////////////////////////////////////////
326// Browser, Constructors, Creation, Showing:
327
328Browser::Browser(const CreateParams& params)
329    : type_(params.type),
330      profile_(params.profile),
331      window_(NULL),
332      ALLOW_THIS_IN_INITIALIZER_LIST(
333          tab_strip_model_delegate_(
334            new chrome::BrowserTabStripModelDelegate(this))),
335      tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
336                                         params.profile)),
337      app_name_(params.app_name),
338      app_type_(params.app_type),
339      chrome_updater_factory_(this),
340      cancel_download_confirmation_state_(NOT_PROMPTED),
341      override_bounds_(params.initial_bounds),
342      initial_show_state_(params.initial_show_state),
343      is_session_restore_(params.is_session_restore),
344      host_desktop_type_(params.host_desktop_type),
345      ALLOW_THIS_IN_INITIALIZER_LIST(
346          unload_controller_(new chrome::UnloadController(this))),
347      weak_factory_(this),
348      ALLOW_THIS_IN_INITIALIZER_LIST(
349          content_setting_bubble_model_delegate_(
350              new BrowserContentSettingBubbleModelDelegate(this))),
351      ALLOW_THIS_IN_INITIALIZER_LIST(
352          toolbar_model_delegate_(
353              new BrowserToolbarModelDelegate(this))),
354      ALLOW_THIS_IN_INITIALIZER_LIST(
355          tab_restore_service_delegate_(
356              new BrowserTabRestoreServiceDelegate(this))),
357      ALLOW_THIS_IN_INITIALIZER_LIST(
358          synced_window_delegate_(
359              new BrowserSyncedWindowDelegate(this))),
360      bookmark_bar_state_(BookmarkBar::HIDDEN),
361      ALLOW_THIS_IN_INITIALIZER_LIST(
362          command_controller_(new chrome::BrowserCommandController(
363              this, g_browser_process->profile_manager()))),
364      window_has_shown_(false) {
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 chrome::search::SearchModel());
371  search_delegate_.reset(
372      new chrome::search::SearchDelegate(search_model_.get(),
373                                         toolbar_model_.get()));
374
375  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
376                 content::Source<Profile>(profile_->GetOriginalProfile()));
377  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
378                 content::Source<Profile>(profile_->GetOriginalProfile()));
379  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
380                 content::Source<Profile>(profile_->GetOriginalProfile()));
381  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
382                 content::NotificationService::AllSources());
383#if defined(ENABLE_THEMES)
384  registrar_.Add(
385      this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
386      content::Source<ThemeService>(
387          ThemeServiceFactory::GetForProfile(profile_)));
388#endif
389  registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
390                 content::NotificationService::AllSources());
391
392  profile_pref_registrar_.Init(profile_->GetPrefs());
393  profile_pref_registrar_.Add(
394      prefs::kDevToolsDisabled,
395      base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
396  profile_pref_registrar_.Add(
397      prefs::kShowBookmarkBar,
398      base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
399                 BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
400  profile_pref_registrar_.Add(
401      prefs::kHomePage,
402      base::Bind(&Browser::MarkHomePageAsChanged, base::Unretained(this)));
403
404  BrowserList::AddBrowser(this);
405
406  // NOTE: These prefs all need to be explicitly destroyed in the destructor
407  // or you'll get a nasty surprise when you run the incognito tests.
408  encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
409                             profile_->GetPrefs());
410
411  if (is_type_tabbed())
412    instant_controller_.reset(new chrome::BrowserInstantController(this));
413
414  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
415
416  base::FilePath profile_path = profile_->GetPath();
417  ProfileMetrics::LogProfileLaunch(profile_path);
418
419  window_ = params.window ? params.window : CreateBrowserWindow(this);
420
421  // TODO(beng): move to BrowserFrameWin.
422#if defined(OS_WIN) && !defined(USE_AURA)
423  // Set the app user model id for this application to that of the application
424  // name.  See http://crbug.com/7028.
425  ui::win::SetAppIdForWindow(
426      is_app() && !is_type_panel() ?
427      ShellIntegration::GetAppModelIdForProfile(UTF8ToWide(app_name_),
428                                                profile_->GetPath()) :
429      ShellIntegration::GetChromiumModelIdForProfile(profile_->GetPath()),
430      window()->GetNativeWindow());
431
432  if (is_type_panel()) {
433    ui::win::SetAppIconForWindow(ShellIntegration::GetChromiumIconLocation(),
434                                 window()->GetNativeWindow());
435  }
436#endif
437
438  // Create the extension window controller before sending notifications.
439  extension_window_controller_.reset(
440      new BrowserExtensionWindowController(this));
441
442  // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
443  //             replace uses of this with BL's notifications.
444  content::NotificationService::current()->Notify(
445      chrome::NOTIFICATION_BROWSER_WINDOW_READY,
446      content::Source<Browser>(this),
447      content::NotificationService::NoDetails());
448
449  // TODO(beng): move to ChromeBrowserMain:
450  if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
451#if defined(OS_WIN)
452    // Notify PDM that this is a first run.
453    ImportAutofillDataWin(PersonalDataManagerFactory::GetForProfile(profile_));
454#endif  // defined(OS_WIN)
455  }
456
457  fullscreen_controller_.reset(new FullscreenController(this));
458  search_model_->AddObserver(this);
459}
460
461Browser::~Browser() {
462  // The tab strip should not have any tabs at this point.
463  if (!browser_shutdown::ShuttingDownWithoutClosingBrowsers())
464    DCHECK(tab_strip_model_->empty());
465
466  search_model_->RemoveObserver(this);
467  tab_strip_model_->RemoveObserver(this);
468
469  // Destroy the BrowserCommandController before removing the browser, so that
470  // it doesn't act on any notifications that are sent as a result of removing
471  // the browser.
472  command_controller_.reset();
473  BrowserList::RemoveBrowser(this);
474
475  SessionService* session_service =
476      SessionServiceFactory::GetForProfile(profile_);
477  if (session_service)
478    session_service->WindowClosed(session_id_);
479
480  TabRestoreService* tab_restore_service =
481      TabRestoreServiceFactory::GetForProfile(profile());
482  if (tab_restore_service)
483    tab_restore_service->BrowserClosed(tab_restore_service_delegate());
484
485#if !defined(OS_MACOSX)
486  if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
487    // We're the last browser window with this profile. We need to nuke the
488    // TabRestoreService, which will start the shutdown of the
489    // NavigationControllers and allow for proper shutdown. If we don't do this
490    // chrome won't shutdown cleanly, and may end up crashing when some
491    // thread tries to use the IO thread (or another thread) that is no longer
492    // valid.
493    // This isn't a valid assumption for Mac OS, as it stays running after
494    // the last browser has closed. The Mac equivalent is in its app
495    // controller.
496    TabRestoreServiceFactory::ResetForProfile(profile_);
497  }
498#endif
499
500  profile_pref_registrar_.RemoveAll();
501
502  encoding_auto_detect_.Destroy();
503
504  if (profile_->IsOffTheRecord() &&
505      !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
506    // An incognito profile is no longer needed, this indirectly frees
507    // its cache and cookies once it gets destroyed at the appropriate time.
508    ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
509  }
510
511  // There may be pending file dialogs, we need to tell them that we've gone
512  // away so they don't try and call back to us.
513  if (select_file_dialog_.get())
514    select_file_dialog_->ListenerDestroyed();
515}
516
517///////////////////////////////////////////////////////////////////////////////
518// Getters & Setters
519
520FindBarController* Browser::GetFindBarController() {
521  if (!find_bar_controller_.get()) {
522    FindBar* find_bar = window_->CreateFindBar();
523    find_bar_controller_.reset(new FindBarController(find_bar));
524    find_bar->SetFindBarController(find_bar_controller_.get());
525    find_bar_controller_->ChangeWebContents(
526        tab_strip_model_->GetActiveWebContents());
527    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
528  }
529  return find_bar_controller_.get();
530}
531
532bool Browser::HasFindBarController() const {
533  return find_bar_controller_.get() != NULL;
534}
535
536bool Browser::is_app() const {
537  return !app_name_.empty();
538}
539
540bool Browser::is_devtools() const {
541  return app_name_ == DevToolsWindow::kDevToolsApp;
542}
543
544///////////////////////////////////////////////////////////////////////////////
545// Browser, State Storage and Retrieval for UI:
546
547gfx::Image Browser::GetCurrentPageIcon() const {
548  WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
549  // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
550  // window during the window's creation (before tabs have been added).
551  FaviconTabHelper* favicon_tab_helper =
552      web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
553  return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
554}
555
556string16 Browser::GetWindowTitleForCurrentTab() const {
557  WebContents* contents = tab_strip_model_->GetActiveWebContents();
558  string16 title;
559
560  // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
561  // window during the window's creation (before tabs have been added).
562  if (contents) {
563    title = contents->GetTitle();
564    FormatTitleForDisplay(&title);
565  }
566  if (title.empty())
567    title = CoreTabHelper::GetDefaultTitle();
568
569#if defined(OS_MACOSX)
570  // On Mac, we don't want to suffix the page title with
571  // the application name.
572  return title;
573#elif defined(USE_ASH)
574  // On Ash, we don't want to suffix the page title with the application name,
575  // but on Windows, where USE_ASH can also be true, we still want the prefix
576  // on desktop.
577  if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
578    return title;
579#endif
580  // Don't append the app name to window titles on app frames and app popups
581  return is_app() ?
582      title :
583      l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
584}
585
586// static
587void Browser::FormatTitleForDisplay(string16* title) {
588  size_t current_index = 0;
589  size_t match_index;
590  while ((match_index = title->find(L'\n', current_index)) != string16::npos) {
591    title->replace(match_index, 1, string16());
592    current_index = match_index;
593  }
594}
595
596///////////////////////////////////////////////////////////////////////////////
597// Browser, OnBeforeUnload handling:
598
599bool Browser::ShouldCloseWindow() {
600  if (!CanCloseWithInProgressDownloads())
601    return false;
602
603  return unload_controller_->ShouldCloseWindow();
604}
605
606bool Browser::IsAttemptingToCloseBrowser() const {
607  return unload_controller_->is_attempting_to_close_browser();
608}
609
610void Browser::OnWindowClosing() {
611  if (!ShouldCloseWindow())
612    return;
613
614  // Application should shutdown on last window close if the user is explicitly
615  // trying to quit, or if there is nothing keeping the browser alive (such as
616  // AppController on the Mac, or BackgroundContentsService for background
617  // pages).
618  bool should_quit_if_last_browser =
619      browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
620
621  if (should_quit_if_last_browser &&
622      BrowserList::GetInstance(host_desktop_type_)->size() == 1) {
623    browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
624  }
625
626  // Don't use GetForProfileIfExisting here, we want to force creation of the
627  // session service so that user can restore what was open.
628  SessionService* session_service =
629      SessionServiceFactory::GetForProfile(profile());
630  if (session_service)
631    session_service->WindowClosing(session_id());
632
633  TabRestoreService* tab_restore_service =
634      TabRestoreServiceFactory::GetForProfile(profile());
635
636#if defined(USE_AURA)
637  if (tab_restore_service && is_app())
638    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
639#endif
640
641  if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
642    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
643
644  // TODO(sky): convert session/tab restore to use notification.
645  content::NotificationService::current()->Notify(
646      chrome::NOTIFICATION_BROWSER_CLOSING,
647      content::Source<Browser>(this),
648      content::NotificationService::NoDetails());
649
650  tab_strip_model_->CloseAllTabs();
651}
652
653void Browser::OnWindowActivated() {
654  // On some platforms we want to automatically reload tabs that are
655  // killed when the user selects them.
656  WebContents* contents = tab_strip_model_->GetActiveWebContents();
657  if (contents && ShouldReloadCrashedTab(contents)) {
658    chrome::Reload(this, CURRENT_TAB);
659    // The reload above will change the toolbar reload button into a stop
660    // button. If the user activated the window with a mouse press on the
661    // reload button itself, the reload will stop on mouse release and the page
662    // will be blank. Disable the stop command temporarily. It will be
663    // re-enabled as the page loads.
664    command_controller_->command_updater()->UpdateCommandEnabled(IDC_STOP,
665                                                                 false);
666  }
667}
668
669////////////////////////////////////////////////////////////////////////////////
670// In-progress download termination handling:
671
672void Browser::InProgressDownloadResponse(bool cancel_downloads) {
673  if (cancel_downloads) {
674    cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
675    chrome::CloseWindow(this);
676    return;
677  }
678
679  // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
680  // close again we'll show the warning again.
681  cancel_download_confirmation_state_ = NOT_PROMPTED;
682
683  // Show the download page so the user can figure-out what downloads are still
684  // in-progress.
685  chrome::ShowDownloads(this);
686}
687
688Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
689    int* num_downloads_blocking) const {
690  DCHECK(num_downloads_blocking);
691  *num_downloads_blocking = 0;
692
693  if (IsAttemptingToCloseBrowser())
694    return DOWNLOAD_CLOSE_OK;
695
696  // If we're not running a full browser process with a profile manager
697  // (testing), it's ok to close the browser.
698  if (!g_browser_process->profile_manager())
699    return DOWNLOAD_CLOSE_OK;
700
701  int total_download_count = DownloadService::DownloadCountAllProfiles();
702  if (total_download_count == 0)
703    return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
704
705  // Figure out how many windows are open total, and associated with this
706  // profile, that are relevant for the ok-to-close decision.
707  int profile_window_count = 0;
708  int total_window_count = 0;
709  for (chrome::BrowserIterator it; !it.done(); it.Next()) {
710    // Don't count this browser window or any other in the process of closing.
711    Browser* const browser = *it;
712    // Window closing may be delayed, and windows that are in the process of
713    // closing don't count against our totals.
714    if (browser == this || browser->IsAttemptingToCloseBrowser())
715      continue;
716
717    if (it->profile() == profile())
718      profile_window_count++;
719    total_window_count++;
720  }
721
722  // If there aren't any other windows, we're at browser shutdown,
723  // which would cancel all current downloads.
724  if (total_window_count == 0) {
725    *num_downloads_blocking = total_download_count;
726    return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
727  }
728
729  // If there aren't any other windows on our profile, and we're an incognito
730  // profile, and there are downloads associated with that profile,
731  // those downloads would be cancelled by our window (-> profile) close.
732  DownloadService* download_service =
733      DownloadServiceFactory::GetForProfile(profile());
734  if (profile_window_count == 0 && download_service->DownloadCount() > 0 &&
735      profile()->IsOffTheRecord()) {
736    *num_downloads_blocking = download_service->DownloadCount();
737    return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
738  }
739
740  // Those are the only conditions under which we will block shutdown.
741  return DOWNLOAD_CLOSE_OK;
742}
743
744////////////////////////////////////////////////////////////////////////////////
745// Browser, Tab adding/showing functions:
746
747void Browser::WindowFullscreenStateChanged() {
748  fullscreen_controller_->WindowFullscreenStateChanged();
749  command_controller_->FullscreenStateChanged();
750  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
751}
752
753void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
754  // When the current tab's SSL state changes, we need to update the URL
755  // bar to reflect the new state.
756  DCHECK(web_contents);
757  if (tab_strip_model_->GetActiveWebContents() == web_contents)
758    UpdateToolbar(false);
759}
760
761///////////////////////////////////////////////////////////////////////////////
762// Browser, Assorted browser commands:
763
764void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
765  fullscreen_controller_->ToggleFullscreenModeWithExtension(extension_url);
766}
767
768bool Browser::SupportsWindowFeature(WindowFeature feature) const {
769  return SupportsWindowFeatureImpl(feature, true);
770}
771
772bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
773  return SupportsWindowFeatureImpl(feature, false);
774}
775
776void Browser::ToggleEncodingAutoDetect() {
777  content::RecordAction(UserMetricsAction("AutoDetectChange"));
778  encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
779  // If "auto detect" is turned on, then any current override encoding
780  // is cleared. This also implicitly performs a reload.
781  // OTOH, if "auto detect" is turned off, we don't change the currently
782  // active encoding.
783  if (encoding_auto_detect_.GetValue()) {
784    WebContents* contents = tab_strip_model_->GetActiveWebContents();
785    if (contents)
786      contents->ResetOverrideEncoding();
787  }
788}
789
790void Browser::OverrideEncoding(int encoding_id) {
791  content::RecordAction(UserMetricsAction("OverrideEncoding"));
792  const std::string selected_encoding =
793      CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
794  WebContents* contents = tab_strip_model_->GetActiveWebContents();
795  if (!selected_encoding.empty() && contents)
796     contents->SetOverrideEncoding(selected_encoding);
797  // Update the list of recently selected encodings.
798  std::string new_selected_encoding_list;
799  if (CharacterEncoding::UpdateRecentlySelectedEncoding(
800        profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
801        encoding_id,
802        &new_selected_encoding_list)) {
803    profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
804                                    new_selected_encoding_list);
805  }
806}
807
808void Browser::OpenFile() {
809  content::RecordAction(UserMetricsAction("OpenFile"));
810  select_file_dialog_ = ui::SelectFileDialog::Create(
811      this, new ChromeSelectFilePolicy(
812          tab_strip_model_->GetActiveWebContents()));
813
814  const base::FilePath directory = profile_->last_selected_directory();
815
816  // TODO(beng): figure out how to juggle this.
817  gfx::NativeWindow parent_window = window_->GetNativeWindow();
818  ui::SelectFileDialog::FileTypeInfo file_types;
819  file_types.support_drive = true;
820  select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
821                                  string16(), directory,
822                                  &file_types, 0, FILE_PATH_LITERAL(""),
823                                  parent_window, NULL);
824}
825
826void Browser::UpdateDownloadShelfVisibility(bool visible) {
827  if (GetStatusBubble())
828    GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
829}
830
831///////////////////////////////////////////////////////////////////////////////
832
833// static
834bool Browser::RunUnloadEventsHelper(WebContents* contents) {
835  // If the WebContents is not connected yet, then there's no unload
836  // handler we can fire even if the WebContents has an unload listener.
837  // One case where we hit this is in a tab that has an infinite loop
838  // before load.
839  if (contents->NeedToFireBeforeUnload()) {
840    // If the page has unload listeners, then we tell the renderer to fire
841    // them. Once they have fired, we'll get a message back saying whether
842    // to proceed closing the page or not, which sends us back to this method
843    // with the NeedToFireBeforeUnload bit cleared.
844    contents->GetRenderViewHost()->FirePageBeforeUnload(false);
845    return true;
846  }
847  return false;
848}
849
850// static
851void Browser::JSOutOfMemoryHelper(WebContents* web_contents) {
852  InfoBarService* infobar_service =
853      InfoBarService::FromWebContents(web_contents);
854  if (!infobar_service)
855    return;
856
857  SimpleAlertInfoBarDelegate::Create(
858      infobar_service, NULL,
859      l10n_util::GetStringUTF16(IDS_JS_OUT_OF_MEMORY_PROMPT), true);
860}
861
862// static
863void Browser::RegisterProtocolHandlerHelper(WebContents* web_contents,
864                                            const std::string& protocol,
865                                            const GURL& url,
866                                            const string16& title,
867                                            bool user_gesture,
868                                            BrowserWindow* window) {
869  Profile* profile =
870      Profile::FromBrowserContext(web_contents->GetBrowserContext());
871  if (profile->IsOffTheRecord())
872    return;
873
874  ProtocolHandler handler =
875      ProtocolHandler::CreateProtocolHandler(protocol, url, title);
876
877  ProtocolHandlerRegistry* registry = profile->GetProtocolHandlerRegistry();
878  TabSpecificContentSettings* tab_content_settings =
879      TabSpecificContentSettings::FromWebContents(web_contents);
880
881  if (registry->SilentlyHandleRegisterHandlerRequest(handler))
882    return;
883
884  if (!user_gesture && window) {
885    tab_content_settings->set_pending_protocol_handler(handler);
886    tab_content_settings->set_previous_protocol_handler(
887        registry->GetHandlerFor(handler.protocol()));
888    window->GetLocationBar()->UpdateContentSettingsIcons();
889    return;
890  }
891
892  // Make sure content-setting icon is turned off in case the page does
893  // ungestured and gestured RPH calls.
894  if (window) {
895    tab_content_settings->ClearPendingProtocolHandler();
896    window->GetLocationBar()->UpdateContentSettingsIcons();
897  }
898
899  RegisterProtocolHandlerInfoBarDelegate::Create(
900      InfoBarService::FromWebContents(web_contents), registry, handler);
901}
902
903// static
904void Browser::FindReplyHelper(WebContents* web_contents,
905                              int request_id,
906                              int number_of_matches,
907                              const gfx::Rect& selection_rect,
908                              int active_match_ordinal,
909                              bool final_update) {
910  FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
911  if (!find_tab_helper)
912    return;
913
914  find_tab_helper->HandleFindReply(request_id,
915                                   number_of_matches,
916                                   selection_rect,
917                                   active_match_ordinal,
918                                   final_update);
919}
920
921void Browser::UpdateUIForNavigationInTab(WebContents* contents,
922                                         content::PageTransition transition,
923                                         bool user_initiated) {
924  tab_strip_model_->TabNavigating(contents, transition);
925
926  bool contents_is_selected =
927      contents == tab_strip_model_->GetActiveWebContents();
928  if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
929    // Forcibly reset the location bar if the url is going to change in the
930    // current tab, since otherwise it won't discard any ongoing user edits,
931    // since it doesn't realize this is a user-initiated action.
932    window()->GetLocationBar()->Revert();
933  }
934
935  if (GetStatusBubble())
936    GetStatusBubble()->Hide();
937
938  // Update the location bar. This is synchronous. We specifically don't
939  // update the load state since the load hasn't started yet and updating it
940  // will put it out of sync with the actual state like whether we're
941  // displaying a favicon, which controls the throbber. If we updated it here,
942  // the throbber will show the default favicon for a split second when
943  // navigating away from the new tab page.
944  ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
945
946  if (contents_is_selected)
947    contents->GetView()->SetInitialFocus();
948}
949
950///////////////////////////////////////////////////////////////////////////////
951// Browser, PageNavigator implementation:
952
953WebContents* Browser::OpenURL(const OpenURLParams& params) {
954  return OpenURLFromTab(NULL, params);
955}
956
957///////////////////////////////////////////////////////////////////////////////
958// Browser, TabStripModelObserver implementation:
959
960void Browser::TabInsertedAt(WebContents* contents,
961                            int index,
962                            bool foreground) {
963  SetAsDelegate(contents, this);
964  SessionTabHelper* session_tab_helper =
965      SessionTabHelper::FromWebContents(contents);
966  session_tab_helper->SetWindowID(session_id());
967
968  content::NotificationService::current()->Notify(
969      chrome::NOTIFICATION_TAB_PARENTED,
970      content::Source<content::WebContents>(contents),
971      content::NotificationService::NoDetails());
972
973  SyncHistoryWithTabs(index);
974
975  // Make sure the loading state is updated correctly, otherwise the throbber
976  // won't start if the page is loading.
977  LoadingStateChanged(contents);
978
979  interstitial_observers_.push_back(new InterstitialObserver(this, contents));
980
981  SessionService* session_service =
982      SessionServiceFactory::GetForProfile(profile_);
983  if (session_service)
984    session_service->TabInserted(contents);
985}
986
987void Browser::TabClosingAt(TabStripModel* tab_strip_model,
988                           WebContents* contents,
989                           int index) {
990  fullscreen_controller_->OnTabClosing(contents);
991  SessionService* session_service =
992      SessionServiceFactory::GetForProfile(profile_);
993  if (session_service)
994    session_service->TabClosing(contents);
995  content::NotificationService::current()->Notify(
996      chrome::NOTIFICATION_TAB_CLOSING,
997      content::Source<NavigationController>(&contents->GetController()),
998      content::NotificationService::NoDetails());
999
1000  // Sever the WebContents' connection back to us.
1001  SetAsDelegate(contents, NULL);
1002}
1003
1004void Browser::TabDetachedAt(WebContents* contents, int index) {
1005  TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
1006}
1007
1008void Browser::TabDeactivated(WebContents* contents) {
1009  fullscreen_controller_->OnTabDeactivated(contents);
1010  search_delegate_->OnTabDeactivated(contents);
1011
1012  // Save what the user's currently typing, so it can be restored when we
1013  // switch back to this tab.
1014  window_->GetLocationBar()->SaveStateToContents(contents);
1015
1016  if (instant_controller_)
1017    instant_controller_->TabDeactivated(contents);
1018}
1019
1020void Browser::ActiveTabChanged(WebContents* old_contents,
1021                               WebContents* new_contents,
1022                               int index,
1023                               bool user_gesture) {
1024  content::RecordAction(UserMetricsAction("ActiveTabChanged"));
1025
1026  // On some platforms we want to automatically reload tabs that are
1027  // killed when the user selects them.
1028  bool did_reload = false;
1029  if (user_gesture && ShouldReloadCrashedTab(new_contents)) {
1030    LOG(WARNING) << "Reloading killed tab at " << index;
1031    static int reload_count = 0;
1032    UMA_HISTOGRAM_CUSTOM_COUNTS(
1033        "Tabs.SadTab.ReloadCount", ++reload_count, 1, 1000, 50);
1034    chrome::Reload(this, CURRENT_TAB);
1035    did_reload = true;
1036  }
1037
1038  // Discarded tabs always get reloaded.
1039  if (!did_reload && tab_strip_model_->IsTabDiscarded(index)) {
1040    LOG(WARNING) << "Reloading discarded tab at " << index;
1041    static int reload_count = 0;
1042    UMA_HISTOGRAM_CUSTOM_COUNTS(
1043        "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1044    chrome::Reload(this, CURRENT_TAB);
1045  }
1046
1047  // If we have any update pending, do it now.
1048  if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1049    ProcessPendingUIUpdates();
1050
1051  // Propagate the profile to the location bar.
1052  UpdateToolbar(true);
1053
1054  // Propagate tab state to toolbar, tab-strip, etc.
1055  UpdateSearchState(new_contents);
1056
1057  // Update reload/stop state.
1058  command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1059
1060  // Update commands to reflect current state.
1061  command_controller_->TabStateChanged();
1062
1063  // Reset the status bubble.
1064  StatusBubble* status_bubble = GetStatusBubble();
1065  if (status_bubble) {
1066    status_bubble->Hide();
1067
1068    // Show the loading state (if any).
1069    status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1070        tab_strip_model_->GetActiveWebContents())->GetStatusText());
1071  }
1072
1073  if (HasFindBarController()) {
1074    find_bar_controller_->ChangeWebContents(new_contents);
1075    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1076  }
1077
1078  // Update sessions. Don't force creation of sessions. If sessions doesn't
1079  // exist, the change will be picked up by sessions when created.
1080  SessionService* session_service =
1081      SessionServiceFactory::GetForProfileIfExisting(profile_);
1082  if (session_service && !tab_strip_model_->closing_all()) {
1083    session_service->SetSelectedTabInWindow(session_id(),
1084                                            tab_strip_model_->active_index());
1085  }
1086
1087  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1088
1089  // This needs to be called after UpdateSearchState().
1090  if (instant_controller_)
1091    instant_controller_->ActiveTabChanged();
1092}
1093
1094void Browser::TabMoved(WebContents* contents,
1095                       int from_index,
1096                       int to_index) {
1097  DCHECK(from_index >= 0 && to_index >= 0);
1098  // Notify the history service.
1099  SyncHistoryWithTabs(std::min(from_index, to_index));
1100}
1101
1102void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1103                            WebContents* old_contents,
1104                            WebContents* new_contents,
1105                            int index) {
1106  TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1107  SessionService* session_service =
1108      SessionServiceFactory::GetForProfile(profile_);
1109  if (session_service)
1110    session_service->TabClosing(old_contents);
1111  TabInsertedAt(new_contents,
1112                index,
1113                (index == tab_strip_model_->active_index()));
1114
1115  int entry_count = new_contents->GetController().GetEntryCount();
1116  if (entry_count > 0) {
1117    // Send out notification so that observers are updated appropriately.
1118    new_contents->GetController().NotifyEntryChanged(
1119        new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1120        entry_count - 1);
1121  }
1122
1123  if (session_service) {
1124    // The new_contents may end up with a different navigation stack. Force
1125    // the session service to update itself.
1126    session_service->TabRestored(new_contents,
1127                                 tab_strip_model_->IsTabPinned(index));
1128  }
1129}
1130
1131void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1132  SessionService* session_service =
1133      SessionServiceFactory::GetForProfileIfExisting(profile());
1134  if (session_service) {
1135    SessionTabHelper* session_tab_helper =
1136        SessionTabHelper::FromWebContents(contents);
1137    session_service->SetPinnedState(session_id(),
1138                                    session_tab_helper->session_id(),
1139                                    tab_strip_model_->IsTabPinned(index));
1140  }
1141}
1142
1143void Browser::TabStripEmpty() {
1144  // Close the frame after we return to the message loop (not immediately,
1145  // otherwise it will destroy this object before the stack has a chance to
1146  // cleanly unwind.)
1147  // Note: This will be called several times if TabStripEmpty is called several
1148  //       times. This is because it does not close the window if tabs are
1149  //       still present.
1150  MessageLoop::current()->PostTask(
1151      FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1152
1153  // Instant may have visible WebContents that need to be detached before the
1154  // window system closes.
1155  instant_controller_.reset();
1156}
1157
1158bool Browser::CanOverscrollContent() const {
1159#if defined(USE_AURA)
1160  bool overscroll_enabled = !CommandLine::ForCurrentProcess()->
1161      HasSwitch(switches::kDisableOverscrollHistoryNavigation);
1162  if (!overscroll_enabled)
1163    return false;
1164  if (is_app() || is_devtools() || !is_type_tabbed())
1165    return false;
1166
1167  // The detached bookmark bar has appearance of floating above the
1168  // web-contents. This does not play nicely with overscroll navigation
1169  // gestures. So disable overscroll navigation when the bookmark bar is in the
1170  // detached state.
1171  if (bookmark_bar_state_ == BookmarkBar::DETACHED)
1172    return false;
1173  return true;
1174#else
1175  return false;
1176#endif
1177}
1178
1179bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1180                                     const NativeWebKeyboardEvent& event,
1181                                     bool* is_keyboard_shortcut) {
1182  // Escape exits tabbed fullscreen mode.
1183  // TODO(koz): Write a test for this http://crbug.com/100441.
1184  if (event.windowsKeyCode == 27 &&
1185      fullscreen_controller_->HandleUserPressedEscape()) {
1186    return true;
1187  }
1188  return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1189}
1190
1191void Browser::HandleKeyboardEvent(content::WebContents* source,
1192                                  const NativeWebKeyboardEvent& event) {
1193  window()->HandleKeyboardEvent(event);
1194}
1195
1196bool Browser::TabsNeedBeforeUnloadFired() {
1197  return unload_controller_->TabsNeedBeforeUnloadFired();
1198}
1199
1200bool Browser::IsMouseLocked() const {
1201  return fullscreen_controller_->IsMouseLocked();
1202}
1203
1204void Browser::OnWindowDidShow() {
1205  if (window_has_shown_)
1206    return;
1207  window_has_shown_ = true;
1208
1209// CurrentProcessInfo::CreationTime() is currently only implemented on Mac and
1210// Windows.
1211#if defined(OS_MACOSX) || defined(OS_WIN)
1212  // Measure the latency from startup till the first browser window becomes
1213  // visible.
1214  static bool is_first_browser_window = true;
1215  if (is_first_browser_window &&
1216      !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1217    is_first_browser_window = false;
1218    const base::Time* process_creation_time =
1219        base::CurrentProcessInfo::CreationTime();
1220
1221    if (process_creation_time) {
1222      UMA_HISTOGRAM_LONG_TIMES(
1223          "Startup.BrowserWindowDisplay",
1224          base::Time::Now() - *process_creation_time);
1225    }
1226  }
1227#endif  // defined(OS_MACOSX) || defined(OS_WIN)
1228
1229  // Nothing to do for non-tabbed windows.
1230  if (!is_type_tabbed())
1231    return;
1232
1233  // Show any pending global error bubble.
1234  GlobalErrorService* service =
1235      GlobalErrorServiceFactory::GetForProfile(profile());
1236  GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1237  if (error)
1238    error->ShowBubbleView(this);
1239}
1240
1241void Browser::ShowFirstRunBubble() {
1242  window()->GetLocationBar()->ShowFirstRunBubble();
1243}
1244
1245void Browser::ShowDownload(content::DownloadItem* download) {
1246  if (!window())
1247    return;
1248
1249  // If the download occurs in a new tab, and it's not a save page
1250  // download (started before initial navigation completed) close it.
1251  WebContents* source = download->GetWebContents();
1252  if (source && source->GetController().IsInitialNavigation() &&
1253      tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1254    CloseContents(source);
1255  }
1256
1257  // Some (app downloads) are not supposed to appear on the shelf.
1258  if (!DownloadItemModel(download).ShouldShowInShelf())
1259    return;
1260
1261  // GetDownloadShelf creates the download shelf if it was not yet created.
1262  DownloadShelf* shelf = window()->GetDownloadShelf();
1263  shelf->AddDownload(download);
1264}
1265
1266///////////////////////////////////////////////////////////////////////////////
1267// Browser, content::WebContentsDelegate implementation:
1268
1269WebContents* Browser::OpenURLFromTab(WebContents* source,
1270                                     const OpenURLParams& params) {
1271  chrome::NavigateParams nav_params(this, params.url, params.transition);
1272  FillNavigateParamsFromOpenURLParams(&nav_params, params);
1273  nav_params.source_contents = source;
1274  nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1275  nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1276  nav_params.user_gesture = true;
1277  chrome::Navigate(&nav_params);
1278
1279  return nav_params.target_contents;
1280}
1281
1282void Browser::NavigationStateChanged(const WebContents* source,
1283                                     unsigned changed_flags) {
1284  // Only update the UI when something visible has changed.
1285  if (changed_flags)
1286    ScheduleUIUpdate(source, changed_flags);
1287
1288  // We can synchronously update commands since they will only change once per
1289  // navigation, so we don't have to worry about flickering. We do, however,
1290  // need to update the command state early on load to always present usable
1291  // actions in the face of slow-to-commit pages.
1292  if (changed_flags & (content::INVALIDATE_TYPE_URL |
1293                       content::INVALIDATE_TYPE_LOAD))
1294    command_controller_->TabStateChanged();
1295}
1296
1297void Browser::AddNewContents(WebContents* source,
1298                             WebContents* new_contents,
1299                             WindowOpenDisposition disposition,
1300                             const gfx::Rect& initial_pos,
1301                             bool user_gesture,
1302                             bool* was_blocked) {
1303  chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1304                         user_gesture, was_blocked);
1305}
1306
1307void Browser::ActivateContents(WebContents* contents) {
1308  tab_strip_model_->ActivateTabAt(
1309      tab_strip_model_->GetIndexOfWebContents(contents), false);
1310  window_->Activate();
1311}
1312
1313void Browser::DeactivateContents(WebContents* contents) {
1314  window_->Deactivate();
1315}
1316
1317void Browser::LoadingStateChanged(WebContents* source) {
1318  window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1319  window_->UpdateTitleBar();
1320
1321  WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1322  if (source == selected_contents) {
1323    bool is_loading = source->IsLoading();
1324    command_controller_->LoadingStateChanged(is_loading, false);
1325    if (GetStatusBubble()) {
1326      GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1327          tab_strip_model_->GetActiveWebContents())->GetStatusText());
1328    }
1329  }
1330}
1331
1332void Browser::CloseContents(WebContents* source) {
1333  if (unload_controller_->CanCloseContents(source))
1334    chrome::CloseWebContents(this, source, true);
1335}
1336
1337void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1338  if (!IsPopupOrPanel(source)) {
1339    NOTREACHED() << "moving invalid browser type";
1340    return;
1341  }
1342  window_->SetBounds(pos);
1343}
1344
1345bool Browser::IsPopupOrPanel(const WebContents* source) const {
1346  // A non-tabbed BROWSER is an unconstrained popup.
1347  return is_type_popup() || is_type_panel();
1348}
1349
1350void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1351                              const GURL& url) {
1352  if (!GetStatusBubble())
1353    return;
1354
1355  if (source == tab_strip_model_->GetActiveWebContents()) {
1356    PrefService* prefs = profile_->GetPrefs();
1357    GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1358  }
1359}
1360
1361void Browser::ContentsMouseEvent(
1362    WebContents* source, const gfx::Point& location, bool motion) {
1363  if (!GetStatusBubble())
1364    return;
1365
1366  if (source == tab_strip_model_->GetActiveWebContents()) {
1367    GetStatusBubble()->MouseMoved(location, !motion);
1368    if (!motion)
1369      GetStatusBubble()->SetURL(GURL(), std::string());
1370  }
1371}
1372
1373void Browser::ContentsZoomChange(bool zoom_in) {
1374  chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1375}
1376
1377void Browser::WebContentsFocused(WebContents* contents) {
1378  window_->WebContentsFocused(contents);
1379}
1380
1381bool Browser::TakeFocus(content::WebContents* source,
1382                        bool reverse) {
1383  content::NotificationService::current()->Notify(
1384      chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1385      content::Source<Browser>(this),
1386      content::NotificationService::NoDetails());
1387  return false;
1388}
1389
1390gfx::Rect Browser::GetRootWindowResizerRect() const {
1391  return window_->GetRootWindowResizerRect();
1392}
1393
1394void Browser::BeforeUnloadFired(WebContents* web_contents,
1395                                bool proceed,
1396                                bool* proceed_to_fire_unload) {
1397  *proceed_to_fire_unload =
1398      unload_controller_->BeforeUnloadFired(web_contents, proceed);
1399}
1400
1401bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1402  const content::NavigationEntry* entry =
1403      source->GetController().GetActiveEntry();
1404  return chrome::search::NavEntryIsInstantNTP(source, entry);
1405}
1406
1407void Browser::SetFocusToLocationBar(bool select_all) {
1408  // Two differences between this and FocusLocationBar():
1409  // (1) This doesn't get recorded in user metrics, since it's called
1410  //     internally.
1411  // (2) This checks whether the location bar can be focused, and if not, clears
1412  //     the focus.  FocusLocationBar() is only reached when the location bar is
1413  //     focusable, but this may be reached at other times, e.g. while in
1414  //     fullscreen mode, where we need to leave focus in a consistent state.
1415  window_->SetFocusToLocationBar(select_all);
1416}
1417
1418void Browser::RenderWidgetShowing() {
1419  window_->DisableInactiveFrame();
1420}
1421
1422int Browser::GetExtraRenderViewHeight() const {
1423  return window_->GetExtraRenderViewHeight();
1424}
1425
1426void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1427  DCHECK(source);
1428  chrome::ViewSource(this, source);
1429}
1430
1431void Browser::ViewSourceForFrame(WebContents* source,
1432                                 const GURL& frame_url,
1433                                 const std::string& frame_content_state) {
1434  DCHECK(source);
1435  chrome::ViewSource(this, source, frame_url, frame_content_state);
1436}
1437
1438void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1439  TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1440                                source);
1441}
1442
1443bool Browser::ShouldCreateWebContents(
1444    WebContents* web_contents,
1445    int route_id,
1446    WindowContainerType window_container_type,
1447    const string16& frame_name,
1448    const GURL& target_url) {
1449  if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1450    // If a BackgroundContents is created, suppress the normal WebContents.
1451    return !MaybeCreateBackgroundContents(
1452        route_id, web_contents, frame_name, target_url);
1453  }
1454
1455  return true;
1456}
1457
1458void Browser::WebContentsCreated(WebContents* source_contents,
1459                                 int64 source_frame_id,
1460                                 const string16& frame_name,
1461                                 const GURL& target_url,
1462                                 WebContents* new_contents) {
1463  // Adopt the WebContents now, so all observers are in place, as the network
1464  // requests for its initial navigation will start immediately. The WebContents
1465  // will later be inserted into this browser using Browser::Navigate via
1466  // AddNewContents.
1467  BrowserTabContents::AttachTabHelpers(new_contents);
1468
1469  // Notify.
1470  RetargetingDetails details;
1471  details.source_web_contents = source_contents;
1472  details.source_frame_id = source_frame_id;
1473  details.target_url = target_url;
1474  details.target_web_contents = new_contents;
1475  details.not_yet_in_tabstrip = true;
1476  content::NotificationService::current()->Notify(
1477      chrome::NOTIFICATION_RETARGETING,
1478      content::Source<Profile>(profile_),
1479      content::Details<RetargetingDetails>(&details));
1480}
1481
1482void Browser::ContentRestrictionsChanged(WebContents* source) {
1483  command_controller_->ContentRestrictionsChanged();
1484}
1485
1486void Browser::RendererUnresponsive(WebContents* source) {
1487  // Ignore hangs if a tab is blocked.
1488  int index = tab_strip_model_->GetIndexOfWebContents(source);
1489  DCHECK_NE(TabStripModel::kNoTab, index);
1490  if (tab_strip_model_->IsTabBlocked(index))
1491    return;
1492
1493  chrome::ShowHungRendererDialog(source);
1494}
1495
1496void Browser::RendererResponsive(WebContents* source) {
1497  chrome::HideHungRendererDialog(source);
1498}
1499
1500void Browser::WorkerCrashed(WebContents* source) {
1501  SimpleAlertInfoBarDelegate::Create(
1502      InfoBarService::FromWebContents(source), NULL,
1503      l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1504}
1505
1506void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1507  if (web_contents == tab_strip_model_->GetActiveWebContents())
1508    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1509}
1510
1511void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1512  if (web_contents == tab_strip_model_->GetActiveWebContents())
1513    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1514}
1515
1516content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1517  return GetJavaScriptDialogManagerInstance();
1518}
1519
1520content::ColorChooser* Browser::OpenColorChooser(WebContents* web_contents,
1521                                                 int color_chooser_id,
1522                                                 SkColor color) {
1523#if defined(OS_WIN)
1524  // On Windows, only create a color chooser if one doesn't exist, because we
1525  // can't close the old color chooser dialog.
1526  if (!color_chooser_.get())
1527    color_chooser_.reset(content::ColorChooser::Create(color_chooser_id,
1528                                                       web_contents,
1529                                                       color));
1530#else
1531  if (color_chooser_.get())
1532    color_chooser_->End();
1533  color_chooser_.reset(content::ColorChooser::Create(color_chooser_id,
1534                                                     web_contents,
1535                                                     color));
1536#endif
1537  return color_chooser_.get();
1538}
1539
1540void Browser::DidEndColorChooser() {
1541  color_chooser_.reset();
1542}
1543
1544void Browser::RunFileChooser(WebContents* web_contents,
1545                             const content::FileChooserParams& params) {
1546  FileSelectHelper::RunFileChooser(web_contents, params);
1547}
1548
1549void Browser::EnumerateDirectory(WebContents* web_contents,
1550                                 int request_id,
1551                                 const base::FilePath& path) {
1552  FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1553}
1554
1555void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1556                                         bool enter_fullscreen) {
1557  fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1558                                                     enter_fullscreen);
1559}
1560
1561bool Browser::IsFullscreenForTabOrPending(
1562    const WebContents* web_contents) const {
1563  return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1564}
1565
1566void Browser::JSOutOfMemory(WebContents* web_contents) {
1567  JSOutOfMemoryHelper(web_contents);
1568}
1569
1570void Browser::RegisterProtocolHandler(WebContents* web_contents,
1571                                      const std::string& protocol,
1572                                      const GURL& url,
1573                                      const string16& title,
1574                                      bool user_gesture) {
1575  RegisterProtocolHandlerHelper(
1576      web_contents, protocol, url, title, user_gesture, window());
1577}
1578
1579void Browser::UpdatePreferredSize(WebContents* source,
1580                                  const gfx::Size& pref_size) {
1581  window_->UpdatePreferredSize(source, pref_size);
1582}
1583
1584void Browser::ResizeDueToAutoResize(WebContents* source,
1585                                    const gfx::Size& new_size) {
1586  window_->ResizeDueToAutoResize(source, new_size);
1587}
1588
1589void Browser::FindReply(WebContents* web_contents,
1590                        int request_id,
1591                        int number_of_matches,
1592                        const gfx::Rect& selection_rect,
1593                        int active_match_ordinal,
1594                        bool final_update) {
1595  FindReplyHelper(web_contents, request_id, number_of_matches, selection_rect,
1596                  active_match_ordinal, final_update);
1597}
1598
1599void Browser::RequestToLockMouse(WebContents* web_contents,
1600                                 bool user_gesture,
1601                                 bool last_unlocked_by_target) {
1602  fullscreen_controller_->RequestToLockMouse(web_contents,
1603                                             user_gesture,
1604                                             last_unlocked_by_target);
1605}
1606
1607void Browser::LostMouseLock() {
1608  fullscreen_controller_->LostMouseLock();
1609}
1610
1611void Browser::RequestMediaAccessPermission(
1612    content::WebContents* web_contents,
1613    const content::MediaStreamRequest& request,
1614    const content::MediaResponseCallback& callback) {
1615  MediaCaptureDevicesDispatcher::GetInstance()->RequestAccess(
1616      web_contents, request, callback);
1617}
1618
1619bool Browser::RequestPpapiBrokerPermission(
1620    WebContents* web_contents,
1621    const GURL& url,
1622    const base::FilePath& plugin_path,
1623    const base::Callback<void(bool)>& callback) {
1624  PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1625  return true;
1626}
1627
1628///////////////////////////////////////////////////////////////////////////////
1629// Browser, CoreTabHelperDelegate implementation:
1630
1631void Browser::SwapTabContents(content::WebContents* old_contents,
1632                              content::WebContents* new_contents) {
1633  int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1634  DCHECK_NE(TabStripModel::kNoTab, index);
1635  tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1636}
1637
1638bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1639  return chrome::CanReload(this);
1640}
1641
1642bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1643  return chrome::CanSavePage(this);
1644}
1645
1646///////////////////////////////////////////////////////////////////////////////
1647// Browser, SearchEngineTabHelperDelegate implementation:
1648
1649void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1650                                       Profile* profile) {
1651  window()->ConfirmAddSearchProvider(template_url, profile);
1652}
1653
1654///////////////////////////////////////////////////////////////////////////////
1655// Browser, WebContentsModalDialogManagerDelegate implementation:
1656
1657void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1658                                    bool blocked) {
1659  int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1660  if (index == TabStripModel::kNoTab) {
1661    NOTREACHED();
1662    return;
1663  }
1664  tab_strip_model_->SetTabBlocked(index, blocked);
1665  if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1666    web_contents->GetView()->Focus();
1667}
1668
1669bool Browser::GetDialogTopCenter(gfx::Point* point) {
1670  int y = 0;
1671  if (window_->GetConstrainedWindowTopY(&y)) {
1672    *point = gfx::Point(window_->GetBounds().width() / 2, y);
1673    return true;
1674  }
1675
1676  return false;
1677}
1678
1679///////////////////////////////////////////////////////////////////////////////
1680// Browser, BlockedContentTabHelperDelegate implementation:
1681
1682content::WebContents* Browser::GetConstrainingWebContents(
1683    content::WebContents* source) {
1684  return source;
1685}
1686
1687///////////////////////////////////////////////////////////////////////////////
1688// Browser, BookmarkTabHelperDelegate implementation:
1689
1690void Browser::URLStarredChanged(content::WebContents* web_contents,
1691                                bool starred) {
1692  if (web_contents == tab_strip_model_->GetActiveWebContents())
1693    window_->SetStarredState(starred);
1694}
1695
1696///////////////////////////////////////////////////////////////////////////////
1697// Browser, ZoomObserver implementation:
1698
1699void Browser::OnZoomChanged(content::WebContents* source,
1700                            bool can_show_bubble) {
1701  if (source == tab_strip_model_->GetActiveWebContents()) {
1702    // Only show the zoom bubble for zoom changes in the active window.
1703    window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive());
1704  }
1705}
1706
1707///////////////////////////////////////////////////////////////////////////////
1708// Browser, ui::SelectFileDialog::Listener implementation:
1709
1710void Browser::FileSelected(const base::FilePath& path, int index,
1711                           void* params) {
1712  FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1713}
1714
1715void Browser::FileSelectedWithExtraInfo(
1716    const ui::SelectedFileInfo& file_info,
1717    int index,
1718    void* params) {
1719  profile_->set_last_selected_directory(file_info.file_path.DirName());
1720
1721  const base::FilePath& path = file_info.local_path;
1722  GURL file_url = net::FilePathToFileURL(path);
1723
1724#if defined(OS_CHROMEOS)
1725  drive::util::ModifyDriveFileResourceUrl(profile_, path, &file_url);
1726#endif
1727
1728  if (file_url.is_empty())
1729    return;
1730
1731  OpenURL(OpenURLParams(
1732      file_url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED,
1733      false));
1734}
1735
1736///////////////////////////////////////////////////////////////////////////////
1737// Browser, content::NotificationObserver implementation:
1738
1739void Browser::Observe(int type,
1740                      const content::NotificationSource& source,
1741                      const content::NotificationDetails& details) {
1742  switch (type) {
1743    case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
1744      if (window()->GetLocationBar())
1745        window()->GetLocationBar()->UpdatePageActions();
1746
1747      // Close any tabs from the unloaded extension, unless it's terminated,
1748      // in which case let the sad tabs remain.
1749      if (content::Details<extensions::UnloadedExtensionInfo>(
1750            details)->reason != extension_misc::UNLOAD_REASON_TERMINATE) {
1751        const Extension* extension =
1752            content::Details<extensions::UnloadedExtensionInfo>(
1753                details)->extension;
1754        // Iterate backwards as we may remove items while iterating.
1755        for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1756          WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1757          // Two cases are handled here:
1758          // - The scheme check is for when an extension page is loaded in a
1759          //   tab, e.g. chrome-extension://id/page.html.
1760          // - The extension_app check is for apps, which can have non-extension
1761          //   schemes, e.g. https://mail.google.com if you have the Gmail app
1762          //   installed.
1763          if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1764               web_contents->GetURL().host() == extension->id()) ||
1765              (extensions::TabHelper::FromWebContents(
1766                   web_contents)->extension_app() == extension)) {
1767            tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1768          }
1769        }
1770      }
1771      break;
1772    }
1773
1774    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1775      Profile* profile = content::Source<Profile>(source).ptr();
1776      if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1777        window()->GetLocationBar()->InvalidatePageActions();
1778      break;
1779    }
1780
1781    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
1782    case chrome::NOTIFICATION_EXTENSION_LOADED:
1783      // During window creation on Windows we may end up calling into
1784      // SHAppBarMessage, which internally spawns a nested message loop. This
1785      // makes it possible for us to end up here before window creation has
1786      // completed,at which point window_ is NULL. See 94752 for details.
1787      if (window() && window()->GetLocationBar())
1788        window()->GetLocationBar()->UpdatePageActions();
1789      break;
1790
1791#if defined(ENABLE_THEMES)
1792    case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1793      window()->UserChangedTheme();
1794      break;
1795#endif
1796
1797    case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1798      WebContents* web_contents = content::Source<WebContents>(source).ptr();
1799      if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1800        LocationBar* location_bar = window()->GetLocationBar();
1801        if (location_bar)
1802          location_bar->UpdateContentSettingsIcons();
1803      }
1804      break;
1805    }
1806
1807    default:
1808      NOTREACHED() << "Got a notification we didn't register for.";
1809  }
1810}
1811
1812void Browser::ModelChanged(
1813    const chrome::search::SearchModel::State& old_state,
1814    const chrome::search::SearchModel::State& new_state) {
1815  if (chrome::search::SearchModel::ShouldChangeTopBarsVisibility(old_state,
1816                                                                 new_state)) {
1817    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1818  }
1819}
1820
1821///////////////////////////////////////////////////////////////////////////////
1822// Browser, Command and state updating (private):
1823
1824void Browser::OnDevToolsDisabledChanged() {
1825  if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
1826    content::DevToolsManager::GetInstance()->CloseAllClientHosts();
1827}
1828
1829void Browser::MarkHomePageAsChanged() {
1830  profile_->GetPrefs()->SetBoolean(prefs::kHomePageChanged, true);
1831}
1832
1833///////////////////////////////////////////////////////////////////////////////
1834// Browser, UI update coalescing and handling (private):
1835
1836void Browser::UpdateToolbar(bool should_restore_state) {
1837  window_->UpdateToolbar(tab_strip_model_->GetActiveWebContents(),
1838                         should_restore_state);
1839}
1840
1841void Browser::UpdateSearchState(WebContents* contents) {
1842  if (chrome::search::IsInstantExtendedAPIEnabled())
1843    search_delegate_->OnTabActivated(contents);
1844}
1845
1846void Browser::ScheduleUIUpdate(const WebContents* source,
1847                               unsigned changed_flags) {
1848  if (!source)
1849    return;
1850
1851  // Do some synchronous updates.
1852  if (changed_flags & content::INVALIDATE_TYPE_URL &&
1853      source == tab_strip_model_->GetActiveWebContents()) {
1854    // Only update the URL for the current tab. Note that we do not update
1855    // the navigation commands since those would have already been updated
1856    // synchronously by NavigationStateChanged.
1857    UpdateToolbar(false);
1858    changed_flags &= ~content::INVALIDATE_TYPE_URL;
1859  }
1860  if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
1861    // Update the loading state synchronously. This is so the throbber will
1862    // immediately start/stop, which gives a more snappy feel. We want to do
1863    // this for any tab so they start & stop quickly.
1864    tab_strip_model_->UpdateWebContentsStateAt(
1865        tab_strip_model_->GetIndexOfWebContents(source),
1866        TabStripModelObserver::LOADING_ONLY);
1867    // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
1868    // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
1869    // changed_flags.
1870  }
1871
1872  if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
1873    // To correctly calculate whether the title changed while not loading
1874    // we need to process the update synchronously. This state only matters for
1875    // the TabStripModel, so we notify the TabStripModel now and notify others
1876    // asynchronously.
1877    tab_strip_model_->UpdateWebContentsStateAt(
1878        tab_strip_model_->GetIndexOfWebContents(source),
1879        TabStripModelObserver::TITLE_NOT_LOADING);
1880  }
1881
1882  // If the only updates were synchronously handled above, we're done.
1883  if (changed_flags == 0)
1884    return;
1885
1886  // Save the dirty bits.
1887  scheduled_updates_[source] |= changed_flags;
1888
1889  if (!chrome_updater_factory_.HasWeakPtrs()) {
1890    // No task currently scheduled, start another.
1891    MessageLoop::current()->PostDelayedTask(
1892        FROM_HERE,
1893        base::Bind(&Browser::ProcessPendingUIUpdates,
1894                   chrome_updater_factory_.GetWeakPtr()),
1895        base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
1896  }
1897}
1898
1899void Browser::ProcessPendingUIUpdates() {
1900#ifndef NDEBUG
1901  // Validate that all tabs we have pending updates for exist. This is scary
1902  // because the pending list must be kept in sync with any detached or
1903  // deleted tabs.
1904  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1905       i != scheduled_updates_.end(); ++i) {
1906    bool found = false;
1907    for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
1908      if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
1909        found = true;
1910        break;
1911      }
1912    }
1913    DCHECK(found);
1914  }
1915#endif
1916
1917  chrome_updater_factory_.InvalidateWeakPtrs();
1918
1919  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1920       i != scheduled_updates_.end(); ++i) {
1921    // Do not dereference |contents|, it may be out-of-date!
1922    const WebContents* contents = i->first;
1923    unsigned flags = i->second;
1924
1925    if (contents == tab_strip_model_->GetActiveWebContents()) {
1926      // Updates that only matter when the tab is selected go here.
1927
1928      if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
1929        LocationBar* location_bar = window()->GetLocationBar();
1930        if (location_bar)
1931          location_bar->UpdatePageActions();
1932      }
1933      // Updating the URL happens synchronously in ScheduleUIUpdate.
1934      if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
1935        GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1936            tab_strip_model_->GetActiveWebContents())->GetStatusText());
1937      }
1938
1939      if (flags & (content::INVALIDATE_TYPE_TAB |
1940                   content::INVALIDATE_TYPE_TITLE)) {
1941        window_->UpdateTitleBar();
1942      }
1943    }
1944
1945    // Updates that don't depend upon the selected state go here.
1946    if (flags &
1947        (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
1948      tab_strip_model_->UpdateWebContentsStateAt(
1949          tab_strip_model_->GetIndexOfWebContents(contents),
1950          TabStripModelObserver::ALL);
1951    }
1952
1953    // Update the bookmark bar. It may happen that the tab is crashed, and if
1954    // so, the bookmark bar should be hidden.
1955    if (flags & content::INVALIDATE_TYPE_TAB)
1956      UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1957
1958    // We don't need to process INVALIDATE_STATE, since that's not visible.
1959  }
1960
1961  scheduled_updates_.clear();
1962}
1963
1964void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
1965  if (!contents)
1966    return;
1967
1968  UpdateMap::iterator i = scheduled_updates_.find(contents);
1969  if (i != scheduled_updates_.end())
1970    scheduled_updates_.erase(i);
1971}
1972
1973///////////////////////////////////////////////////////////////////////////////
1974// Browser, Getters for UI (private):
1975
1976StatusBubble* Browser::GetStatusBubble() {
1977  // In kiosk and exclusive app mode, we want to always hide the status bubble.
1978  if (chrome::IsRunningInAppMode())
1979    return NULL;
1980
1981  return window_ ? window_->GetStatusBubble() : NULL;
1982}
1983
1984///////////////////////////////////////////////////////////////////////////////
1985// Browser, Session restore functions (private):
1986
1987void Browser::SyncHistoryWithTabs(int index) {
1988  SessionService* session_service =
1989      SessionServiceFactory::GetForProfileIfExisting(profile());
1990  if (session_service) {
1991    for (int i = index; i < tab_strip_model_->count(); ++i) {
1992      WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1993      if (web_contents) {
1994        SessionTabHelper* session_tab_helper =
1995            SessionTabHelper::FromWebContents(web_contents);
1996        session_service->SetTabIndexInWindow(
1997            session_id(), session_tab_helper->session_id(), i);
1998        session_service->SetPinnedState(
1999            session_id(),
2000            session_tab_helper->session_id(),
2001            tab_strip_model_->IsTabPinned(i));
2002      }
2003    }
2004  }
2005}
2006
2007///////////////////////////////////////////////////////////////////////////////
2008// Browser, In-progress download termination handling (private):
2009
2010bool Browser::CanCloseWithInProgressDownloads() {
2011  // If we've prompted, we need to hear from the user before we
2012  // can close.
2013  if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2014    return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2015
2016  int num_downloads_blocking;
2017  if (DOWNLOAD_CLOSE_OK ==
2018      OkToCloseWithInProgressDownloads(&num_downloads_blocking))
2019    return true;
2020
2021  // Closing this window will kill some downloads; prompt to make sure
2022  // that's ok.
2023  cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2024  window_->ConfirmBrowserCloseWithPendingDownloads();
2025
2026  // Return false so the browser does not close.  We'll close if the user
2027  // confirms in the dialog.
2028  return false;
2029}
2030
2031///////////////////////////////////////////////////////////////////////////////
2032// Browser, Assorted utility functions (private):
2033
2034void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
2035  // WebContents...
2036  web_contents->SetDelegate(delegate);
2037
2038  // ...and all the helpers.
2039  BlockedContentTabHelper::FromWebContents(web_contents)->
2040      set_delegate(delegate);
2041  BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2042  WebContentsModalDialogManager::FromWebContents(web_contents)->
2043      set_delegate(delegate);
2044  CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2045  SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2046  ZoomController::FromWebContents(web_contents)->set_observer(delegate);
2047}
2048
2049void Browser::CloseFrame() {
2050  window_->Close();
2051}
2052
2053void Browser::TabDetachedAtImpl(content::WebContents* contents,
2054                                int index,
2055                                DetachType type) {
2056  if (type == DETACH_TYPE_DETACH) {
2057    // Save the current location bar state, but only if the tab being detached
2058    // is the selected tab.  Because saving state can conditionally revert the
2059    // location bar, saving the current tab's location bar state to a
2060    // non-selected tab can corrupt both tabs.
2061    if (contents == tab_strip_model_->GetActiveWebContents()) {
2062      LocationBar* location_bar = window()->GetLocationBar();
2063      if (location_bar)
2064        location_bar->SaveStateToContents(contents);
2065    }
2066
2067    if (!tab_strip_model_->closing_all())
2068      SyncHistoryWithTabs(0);
2069  }
2070
2071  SetAsDelegate(contents, NULL);
2072  RemoveScheduledUpdatesFor(contents);
2073
2074  if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2075    find_bar_controller_->ChangeWebContents(NULL);
2076  }
2077
2078  // Stop observing search model changes for this tab.
2079  search_delegate_->OnTabDetached(contents);
2080
2081  for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2082    if (interstitial_observers_[i]->web_contents() != contents)
2083      continue;
2084
2085    delete interstitial_observers_[i];
2086    interstitial_observers_.erase(interstitial_observers_.begin() + i);
2087    return;
2088  }
2089}
2090
2091bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2092                                        bool check_fullscreen) const {
2093  bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2094
2095  unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2096
2097  if (is_type_tabbed())
2098    features |= FEATURE_BOOKMARKBAR;
2099
2100  if (!hide_ui_for_fullscreen) {
2101    if (!is_type_tabbed())
2102      features |= FEATURE_TITLEBAR;
2103
2104    if (is_type_tabbed())
2105      features |= FEATURE_TABSTRIP;
2106
2107    if (is_type_tabbed())
2108      features |= FEATURE_TOOLBAR;
2109
2110    if (!is_app())
2111      features |= FEATURE_LOCATIONBAR;
2112  }
2113  return !!(features & feature);
2114}
2115
2116void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2117  BookmarkBar::State state;
2118  // The bookmark bar is hidden in fullscreen mode, unless on the new tab page.
2119  if (browser_defaults::bookmarks_enabled &&
2120      profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2121      !ShouldHideUIForFullscreen()) {
2122    state = BookmarkBar::SHOW;
2123  } else {
2124    WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2125    BookmarkTabHelper* bookmark_tab_helper =
2126        web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2127    if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2128      state = BookmarkBar::DETACHED;
2129    else
2130      state = BookmarkBar::HIDDEN;
2131  }
2132
2133  // Bookmark bar may need to be hidden for |SEARCH_SUGGESTIONS| and
2134  // |SEARCH_RESULTS| modes as per SearchBox API or Instant overlay or if it's
2135  // detached.
2136  // TODO(sail): remove conditional MACOSX flag when bookmark bar is actually
2137  // hidden on mac; for now, mac keeps the bookmark bar shown but changes its
2138  // z-order to stack it below contents.
2139#if !defined(OS_MACOSX)
2140  if (search_model_->mode().is_search() &&
2141      (state == BookmarkBar::DETACHED || !search_model_->top_bars_visible())) {
2142    state = BookmarkBar::HIDDEN;
2143  }
2144#else
2145  // TODO(sail): remove this when the above block is enabled for mac.
2146  if (state == BookmarkBar::DETACHED && search_model_->mode().is_search())
2147    state = BookmarkBar::HIDDEN;
2148#endif  // !defined(OS_MACOSX)
2149
2150  if (state == bookmark_bar_state_)
2151    return;
2152
2153  bookmark_bar_state_ = state;
2154
2155  if (!window_)
2156    return;  // This is called from the constructor when window_ is NULL.
2157
2158  if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2159    // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2160    // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2161    // end up querying state once they process the tab switch.
2162    return;
2163  }
2164
2165  bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2166  window_->BookmarkBarStateChanged(shouldAnimate ?
2167      BookmarkBar::ANIMATE_STATE_CHANGE :
2168      BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2169}
2170
2171bool Browser::ShouldHideUIForFullscreen() const {
2172  // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2173  // keep the controls in a slide-down panel.
2174  return window_ && window_->ShouldHideUIForFullscreen();
2175}
2176
2177bool Browser::MaybeCreateBackgroundContents(int route_id,
2178                                            WebContents* opener_web_contents,
2179                                            const string16& frame_name,
2180                                            const GURL& target_url) {
2181  GURL opener_url = opener_web_contents->GetURL();
2182  ExtensionService* extensions_service =
2183      extensions::ExtensionSystem::Get(profile_)->extension_service();
2184
2185  if (!opener_url.is_valid() ||
2186      frame_name.empty() ||
2187      !extensions_service ||
2188      !extensions_service->is_ready())
2189    return false;
2190
2191  // Only hosted apps have web extents, so this ensures that only hosted apps
2192  // can create BackgroundContents. We don't have to check for background
2193  // permission as that is checked in RenderMessageFilter when the CreateWindow
2194  // message is processed.
2195  const Extension* extension =
2196      extensions_service->extensions()->GetHostedAppByURL(
2197          ExtensionURLInfo(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 = service->CreateBackgroundContents(
2240      site_instance,
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