browser.cc revision f2477e01787aa58f445919b809d89e252beef54f 
1// Copyright 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/ui/browser.h"
6
7#if defined(OS_WIN)
8#include <windows.h>
9#include <shellapi.h>
10#endif  // defined(OS_WIN)
11
12#include <algorithm>
13#include <string>
14
15#include "base/base_paths.h"
16#include "base/bind.h"
17#include "base/command_line.h"
18#include "base/logging.h"
19#include "base/metrics/histogram.h"
20#include "base/path_service.h"
21#include "base/prefs/pref_service.h"
22#include "base/process/process_info.h"
23#include "base/strings/string_number_conversions.h"
24#include "base/strings/string_util.h"
25#include "base/strings/stringprintf.h"
26#include "base/strings/utf_string_conversions.h"
27#include "base/threading/thread.h"
28#include "base/threading/thread_restrictions.h"
29#include "base/time/time.h"
30#include "chrome/app/chrome_command_ids.h"
31#include "chrome/browser/app_mode/app_mode_utils.h"
32#include "chrome/browser/autofill/personal_data_manager_factory.h"
33#include "chrome/browser/background/background_contents_service.h"
34#include "chrome/browser/background/background_contents_service_factory.h"
35#include "chrome/browser/bookmarks/bookmark_model.h"
36#include "chrome/browser/bookmarks/bookmark_utils.h"
37#include "chrome/browser/browser_process.h"
38#include "chrome/browser/browser_shutdown.h"
39#include "chrome/browser/character_encoding.h"
40#include "chrome/browser/chrome_notification_types.h"
41#include "chrome/browser/chrome_page_zoom.h"
42#include "chrome/browser/content_settings/host_content_settings_map.h"
43#include "chrome/browser/content_settings/tab_specific_content_settings.h"
44#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
45#include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
46#include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
47#include "chrome/browser/defaults.h"
48#include "chrome/browser/devtools/devtools_toggle_action.h"
49#include "chrome/browser/devtools/devtools_window.h"
50#include "chrome/browser/download/download_item_model.h"
51#include "chrome/browser/download/download_service.h"
52#include "chrome/browser/download/download_service_factory.h"
53#include "chrome/browser/download/download_shelf.h"
54#include "chrome/browser/extensions/browser_extension_window_controller.h"
55#include "chrome/browser/extensions/extension_prefs.h"
56#include "chrome/browser/extensions/extension_service.h"
57#include "chrome/browser/extensions/extension_system.h"
58#include "chrome/browser/extensions/tab_helper.h"
59#include "chrome/browser/favicon/favicon_tab_helper.h"
60#include "chrome/browser/file_select_helper.h"
61#include "chrome/browser/first_run/first_run.h"
62#include "chrome/browser/google/google_url_tracker.h"
63#include "chrome/browser/infobars/infobar_service.h"
64#include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
65#include "chrome/browser/lifetime/application_lifetime.h"
66#include "chrome/browser/notifications/notification_ui_manager.h"
67#include "chrome/browser/pepper_broker_infobar_delegate.h"
68#include "chrome/browser/prefs/incognito_mode_prefs.h"
69#include "chrome/browser/profiles/profile.h"
70#include "chrome/browser/profiles/profile_destroyer.h"
71#include "chrome/browser/profiles/profile_manager.h"
72#include "chrome/browser/profiles/profile_metrics.h"
73#include "chrome/browser/repost_form_warning_controller.h"
74#include "chrome/browser/search/search.h"
75#include "chrome/browser/sessions/session_service.h"
76#include "chrome/browser/sessions/session_service_factory.h"
77#include "chrome/browser/sessions/session_tab_helper.h"
78#include "chrome/browser/sessions/session_types.h"
79#include "chrome/browser/sessions/tab_restore_service.h"
80#include "chrome/browser/sessions/tab_restore_service_factory.h"
81#include "chrome/browser/sync/profile_sync_service.h"
82#include "chrome/browser/sync/profile_sync_service_factory.h"
83#include "chrome/browser/sync/sync_ui_util.h"
84#include "chrome/browser/tab_contents/background_contents.h"
85#include "chrome/browser/tab_contents/retargeting_details.h"
86#include "chrome/browser/tab_contents/tab_util.h"
87#include "chrome/browser/themes/theme_service.h"
88#include "chrome/browser/themes/theme_service_factory.h"
89#include "chrome/browser/translate/translate_tab_helper.h"
90#include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
91#include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
92#include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
93#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
94#include "chrome/browser/ui/browser_command_controller.h"
95#include "chrome/browser/ui/browser_commands.h"
96#include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
97#include "chrome/browser/ui/browser_dialogs.h"
98#include "chrome/browser/ui/browser_finder.h"
99#include "chrome/browser/ui/browser_instant_controller.h"
100#include "chrome/browser/ui/browser_iterator.h"
101#include "chrome/browser/ui/browser_language_state_observer.h"
102#include "chrome/browser/ui/browser_list.h"
103#include "chrome/browser/ui/browser_navigator.h"
104#include "chrome/browser/ui/browser_tab_contents.h"
105#include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
106#include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
107#include "chrome/browser/ui/browser_tabstrip.h"
108#include "chrome/browser/ui/browser_toolbar_model_delegate.h"
109#include "chrome/browser/ui/browser_ui_prefs.h"
110#include "chrome/browser/ui/browser_window.h"
111#include "chrome/browser/ui/chrome_pages.h"
112#include "chrome/browser/ui/chrome_select_file_policy.h"
113#include "chrome/browser/ui/fast_unload_controller.h"
114#include "chrome/browser/ui/find_bar/find_bar.h"
115#include "chrome/browser/ui/find_bar/find_bar_controller.h"
116#include "chrome/browser/ui/find_bar/find_tab_helper.h"
117#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
118#include "chrome/browser/ui/global_error/global_error.h"
119#include "chrome/browser/ui/global_error/global_error_service.h"
120#include "chrome/browser/ui/global_error/global_error_service_factory.h"
121#include "chrome/browser/ui/media_utils.h"
122#include "chrome/browser/ui/omnibox/location_bar.h"
123#include "chrome/browser/ui/search/search_delegate.h"
124#include "chrome/browser/ui/search/search_model.h"
125#include "chrome/browser/ui/search/search_tab_helper.h"
126#include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
127#include "chrome/browser/ui/singleton_tabs.h"
128#include "chrome/browser/ui/status_bubble.h"
129#include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
130#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
131#include "chrome/browser/ui/tab_modal_confirm_dialog.h"
132#include "chrome/browser/ui/tabs/dock_info.h"
133#include "chrome/browser/ui/tabs/tab_menu_model.h"
134#include "chrome/browser/ui/tabs/tab_strip_model.h"
135#include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
136#include "chrome/browser/ui/unload_controller.h"
137#include "chrome/browser/ui/web_applications/web_app_ui.h"
138#include "chrome/browser/ui/webui/signin/login_ui_service.h"
139#include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
140#include "chrome/browser/ui/window_sizer/window_sizer.h"
141#include "chrome/browser/ui/zoom/zoom_controller.h"
142#include "chrome/browser/upgrade_detector.h"
143#include "chrome/browser/web_applications/web_app.h"
144#include "chrome/common/chrome_constants.h"
145#include "chrome/common/chrome_switches.h"
146#include "chrome/common/custom_handlers/protocol_handler.h"
147#include "chrome/common/net/url_fixer_upper.h"
148#include "chrome/common/pref_names.h"
149#include "chrome/common/profiling.h"
150#include "chrome/common/search_types.h"
151#include "chrome/common/url_constants.h"
152#include "components/startup_metric_utils/startup_metric_utils.h"
153#include "components/web_modal/web_contents_modal_dialog_manager.h"
154#include "content/public/browser/devtools_manager.h"
155#include "content/public/browser/download_item.h"
156#include "content/public/browser/download_manager.h"
157#include "content/public/browser/interstitial_page.h"
158#include "content/public/browser/invalidate_type.h"
159#include "content/public/browser/navigation_controller.h"
160#include "content/public/browser/navigation_entry.h"
161#include "content/public/browser/notification_details.h"
162#include "content/public/browser/notification_service.h"
163#include "content/public/browser/plugin_service.h"
164#include "content/public/browser/render_process_host.h"
165#include "content/public/browser/render_view_host.h"
166#include "content/public/browser/site_instance.h"
167#include "content/public/browser/user_metrics.h"
168#include "content/public/browser/web_contents.h"
169#include "content/public/browser/web_contents_view.h"
170#include "content/public/common/content_switches.h"
171#include "content/public/common/page_zoom.h"
172#include "content/public/common/renderer_preferences.h"
173#include "content/public/common/webplugininfo.h"
174#include "extensions/common/constants.h"
175#include "extensions/common/extension.h"
176#include "extensions/common/manifest_handlers/background_info.h"
177#include "grit/chromium_strings.h"
178#include "grit/generated_resources.h"
179#include "grit/locale_settings.h"
180#include "grit/theme_resources.h"
181#include "net/base/net_util.h"
182#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
183#include "net/cookies/cookie_monster.h"
184#include "net/url_request/url_request_context.h"
185#include "third_party/WebKit/public/web/WebWindowFeatures.h"
186#include "ui/base/l10n/l10n_util.h"
187#include "ui/base/window_open_disposition.h"
188#include "ui/gfx/point.h"
189#include "ui/shell_dialogs/selected_file_info.h"
190
191#if defined(OS_WIN)
192#include "base/win/metro.h"
193#include "chrome/browser/ssl/ssl_error_info.h"
194#include "chrome/browser/task_manager/task_manager.h"
195#include "chrome/browser/ui/view_ids.h"
196#include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
197#include "ui/base/win/shell.h"
198#endif  // OS_WIN
199
200#if defined(OS_CHROMEOS)
201#include "chrome/browser/chromeos/drive/file_system_util.h"
202#endif
203
204#if defined(USE_ASH)
205#include "ash/ash_switches.h"
206#endif
207
208using base::TimeDelta;
209using content::NativeWebKeyboardEvent;
210using content::NavigationController;
211using content::NavigationEntry;
212using content::OpenURLParams;
213using content::PluginService;
214using content::Referrer;
215using content::SiteInstance;
216using content::UserMetricsAction;
217using content::WebContents;
218using extensions::Extension;
219using ui::WebDialogDelegate;
220using web_modal::WebContentsModalDialogManager;
221using blink::WebWindowFeatures;
222
223///////////////////////////////////////////////////////////////////////////////
224
225namespace {
226
227// How long we wait before updating the browser chrome while loading a page.
228const int kUIUpdateCoalescingTimeMS = 200;
229
230BrowserWindow* CreateBrowserWindow(Browser* browser) {
231  return BrowserWindow::CreateBrowserWindow(browser);
232}
233
234// Is the fast tab unload experiment enabled?
235bool IsFastTabUnloadEnabled() {
236  return CommandLine::ForCurrentProcess()->HasSwitch(
237        switches::kEnableFastUnload);
238}
239
240}  // namespace
241
242////////////////////////////////////////////////////////////////////////////////
243// Browser, CreateParams:
244
245Browser::CreateParams::CreateParams(Profile* profile,
246                                    chrome::HostDesktopType host_desktop_type)
247    : type(TYPE_TABBED),
248      profile(profile),
249      host_desktop_type(host_desktop_type),
250      app_type(APP_TYPE_HOST),
251      initial_show_state(ui::SHOW_STATE_DEFAULT),
252      is_session_restore(false),
253      window(NULL) {
254}
255
256Browser::CreateParams::CreateParams(Type type,
257                                    Profile* profile,
258                                    chrome::HostDesktopType host_desktop_type)
259    : type(type),
260      profile(profile),
261      host_desktop_type(host_desktop_type),
262      app_type(APP_TYPE_HOST),
263      initial_show_state(ui::SHOW_STATE_DEFAULT),
264      is_session_restore(false),
265      window(NULL) {
266}
267
268// static
269Browser::CreateParams Browser::CreateParams::CreateForApp(
270    Type type,
271    const std::string& app_name,
272    const gfx::Rect& window_bounds,
273    Profile* profile,
274    chrome::HostDesktopType host_desktop_type) {
275  DCHECK(type != TYPE_TABBED);
276  DCHECK(!app_name.empty());
277
278  CreateParams params(type, profile, host_desktop_type);
279  params.app_name = app_name;
280  params.app_type = APP_TYPE_CHILD;
281  params.initial_bounds = window_bounds;
282
283  return params;
284}
285
286// static
287Browser::CreateParams Browser::CreateParams::CreateForDevTools(
288    Profile* profile,
289    chrome::HostDesktopType host_desktop_type) {
290  CreateParams params(TYPE_POPUP, profile, host_desktop_type);
291  params.app_name = DevToolsWindow::kDevToolsApp;
292  return params;
293}
294
295////////////////////////////////////////////////////////////////////////////////
296// Browser, InterstitialObserver:
297
298class Browser::InterstitialObserver : public content::WebContentsObserver {
299 public:
300  InterstitialObserver(Browser* browser, content::WebContents* web_contents)
301      : WebContentsObserver(web_contents),
302        browser_(browser) {
303  }
304
305  using content::WebContentsObserver::web_contents;
306
307  virtual void DidAttachInterstitialPage() OVERRIDE {
308    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
309  }
310
311  virtual void DidDetachInterstitialPage() OVERRIDE {
312    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
313  }
314
315 private:
316  Browser* browser_;
317
318  DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
319};
320
321///////////////////////////////////////////////////////////////////////////////
322// Browser, Constructors, Creation, Showing:
323
324Browser::Browser(const CreateParams& params)
325    : type_(params.type),
326      profile_(params.profile),
327      window_(NULL),
328      tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
329      tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
330                                         params.profile)),
331      app_name_(params.app_name),
332      app_type_(params.app_type),
333      cancel_download_confirmation_state_(NOT_PROMPTED),
334      override_bounds_(params.initial_bounds),
335      initial_show_state_(params.initial_show_state),
336      is_session_restore_(params.is_session_restore),
337      host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
338          params.host_desktop_type)),
339      content_setting_bubble_model_delegate_(
340          new BrowserContentSettingBubbleModelDelegate(this)),
341      toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
342      tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
343      synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
344      bookmark_bar_state_(BookmarkBar::HIDDEN),
345      command_controller_(new chrome::BrowserCommandController(
346          this, g_browser_process->profile_manager())),
347      window_has_shown_(false),
348      chrome_updater_factory_(this),
349      weak_factory_(this),
350      language_state_observer_(new BrowserLanguageStateObserver(this)) {
351  // If this causes a crash then a window is being opened using a profile type
352  // that is disallowed by policy. The crash prevents the disabled window type
353  // from opening at all, but the path that triggered it should be fixed.
354  CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
355
356  // TODO(jeremy): Move to initializer list once flag is removed.
357  if (IsFastTabUnloadEnabled())
358    fast_unload_controller_.reset(new chrome::FastUnloadController(this));
359  else
360    unload_controller_.reset(new chrome::UnloadController(this));
361
362  if (!app_name_.empty())
363    chrome::RegisterAppPrefs(app_name_, profile_);
364  tab_strip_model_->AddObserver(this);
365
366  toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
367  search_model_.reset(new SearchModel());
368  search_delegate_.reset(new SearchDelegate(search_model_.get()));
369
370  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
371                 content::Source<Profile>(profile_->GetOriginalProfile()));
372  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
373                 content::Source<Profile>(profile_->GetOriginalProfile()));
374  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
375                 content::Source<Profile>(profile_->GetOriginalProfile()));
376  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
377                 content::NotificationService::AllSources());
378#if defined(ENABLE_THEMES)
379  registrar_.Add(
380      this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
381      content::Source<ThemeService>(
382          ThemeServiceFactory::GetForProfile(profile_)));
383#endif
384  registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
385                 content::NotificationService::AllSources());
386
387  profile_pref_registrar_.Init(profile_->GetPrefs());
388  profile_pref_registrar_.Add(
389      prefs::kDevToolsDisabled,
390      base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
391  profile_pref_registrar_.Add(
392      prefs::kShowBookmarkBar,
393      base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
394                 BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
395
396  BrowserList::AddBrowser(this);
397
398  // NOTE: These prefs all need to be explicitly destroyed in the destructor
399  // or you'll get a nasty surprise when you run the incognito tests.
400  encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
401                             profile_->GetPrefs());
402
403  if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
404    instant_controller_.reset(new BrowserInstantController(this));
405
406  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
407
408  ProfileMetrics::LogProfileLaunch(profile_);
409
410  window_ = params.window ? params.window : CreateBrowserWindow(this);
411
412  // Create the extension window controller before sending notifications.
413  extension_window_controller_.reset(
414      new BrowserExtensionWindowController(this));
415
416  SessionService* session_service =
417      SessionServiceFactory::GetForProfileForSessionRestore(profile_);
418  if (session_service)
419    session_service->WindowOpened(this);
420
421  // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
422  //             replace uses of this with BL's notifications.
423  content::NotificationService::current()->Notify(
424      chrome::NOTIFICATION_BROWSER_WINDOW_READY,
425      content::Source<Browser>(this),
426      content::NotificationService::NoDetails());
427
428  // TODO(beng): move to ChromeBrowserMain:
429  if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
430#if defined(OS_WIN)
431    // Notify PDM that this is a first run.
432    ImportAutofillDataWin(
433        autofill::PersonalDataManagerFactory::GetForProfile(profile_));
434#endif  // defined(OS_WIN)
435  }
436
437  fullscreen_controller_.reset(new FullscreenController(this));
438}
439
440Browser::~Browser() {
441  // The tab strip should not have any tabs at this point.
442  if (!browser_shutdown::ShuttingDownWithoutClosingBrowsers())
443    DCHECK(tab_strip_model_->empty());
444
445  tab_strip_model_->RemoveObserver(this);
446
447  // Destroy the BrowserCommandController before removing the browser, so that
448  // it doesn't act on any notifications that are sent as a result of removing
449  // the browser.
450  command_controller_.reset();
451  BrowserList::RemoveBrowser(this);
452
453  SessionService* session_service =
454      SessionServiceFactory::GetForProfile(profile_);
455  if (session_service)
456    session_service->WindowClosed(session_id_);
457
458  TabRestoreService* tab_restore_service =
459      TabRestoreServiceFactory::GetForProfile(profile());
460  if (tab_restore_service)
461    tab_restore_service->BrowserClosed(tab_restore_service_delegate());
462
463#if !defined(OS_MACOSX)
464  if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
465    // We're the last browser window with this profile. We need to nuke the
466    // TabRestoreService, which will start the shutdown of the
467    // NavigationControllers and allow for proper shutdown. If we don't do this
468    // chrome won't shutdown cleanly, and may end up crashing when some
469    // thread tries to use the IO thread (or another thread) that is no longer
470    // valid.
471    // This isn't a valid assumption for Mac OS, as it stays running after
472    // the last browser has closed. The Mac equivalent is in its app
473    // controller.
474    TabRestoreServiceFactory::ResetForProfile(profile_);
475  }
476#endif
477
478  profile_pref_registrar_.RemoveAll();
479
480  encoding_auto_detect_.Destroy();
481
482  // Destroy BrowserExtensionWindowController before the incognito profile
483  // is destroyed to make sure the chrome.windows.onRemoved event is sent.
484  extension_window_controller_.reset();
485
486  // Destroy BrowserInstantController before the incongnito profile is destroyed
487  // because the InstantController destructor depends on this profile.
488  instant_controller_.reset();
489
490  if (profile_->IsOffTheRecord() &&
491      !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
492    // An incognito profile is no longer needed, this indirectly frees
493    // its cache and cookies once it gets destroyed at the appropriate time.
494    ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
495  }
496
497  // There may be pending file dialogs, we need to tell them that we've gone
498  // away so they don't try and call back to us.
499  if (select_file_dialog_.get())
500    select_file_dialog_->ListenerDestroyed();
501
502  int num_downloads;
503  if (OkToCloseWithInProgressDownloads(&num_downloads) ==
504          DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
505      !browser_defaults::kBrowserAliveWithNoWindows) {
506    DownloadService::CancelAllDownloads();
507  }
508}
509
510///////////////////////////////////////////////////////////////////////////////
511// Getters & Setters
512
513FindBarController* Browser::GetFindBarController() {
514  if (!find_bar_controller_.get()) {
515    FindBar* find_bar = window_->CreateFindBar();
516    find_bar_controller_.reset(new FindBarController(find_bar));
517    find_bar->SetFindBarController(find_bar_controller_.get());
518    find_bar_controller_->ChangeWebContents(
519        tab_strip_model_->GetActiveWebContents());
520    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
521  }
522  return find_bar_controller_.get();
523}
524
525bool Browser::HasFindBarController() const {
526  return find_bar_controller_.get() != NULL;
527}
528
529bool Browser::is_app() const {
530  return !app_name_.empty();
531}
532
533bool Browser::is_devtools() const {
534  return app_name_ == DevToolsWindow::kDevToolsApp;
535}
536
537///////////////////////////////////////////////////////////////////////////////
538// Browser, State Storage and Retrieval for UI:
539
540gfx::Image Browser::GetCurrentPageIcon() const {
541  WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
542  // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
543  // window during the window's creation (before tabs have been added).
544  FaviconTabHelper* favicon_tab_helper =
545      web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
546  return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
547}
548
549string16 Browser::GetWindowTitleForCurrentTab() const {
550  WebContents* contents = tab_strip_model_->GetActiveWebContents();
551  string16 title;
552
553  // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
554  // window during the window's creation (before tabs have been added).
555  if (contents) {
556    title = contents->GetTitle();
557    FormatTitleForDisplay(&title);
558  }
559  if (title.empty())
560    title = CoreTabHelper::GetDefaultTitle();
561
562#if defined(OS_MACOSX)
563  // On Mac, we don't want to suffix the page title with
564  // the application name.
565  return title;
566#elif defined(USE_ASH)
567  // On Ash, we don't want to suffix the page title with the application name,
568  // but on Windows, where USE_ASH can also be true, we still want the prefix
569  // on desktop.
570  if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
571    return title;
572#endif
573  // Don't append the app name to window titles on app frames and app popups
574  return is_app() ?
575      title :
576      l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
577}
578
579// static
580void Browser::FormatTitleForDisplay(string16* title) {
581  size_t current_index = 0;
582  size_t match_index;
583  while ((match_index = title->find(L'\n', current_index)) != string16::npos) {
584    title->replace(match_index, 1, string16());
585    current_index = match_index;
586  }
587}
588
589///////////////////////////////////////////////////////////////////////////////
590// Browser, OnBeforeUnload handling:
591
592bool Browser::ShouldCloseWindow() {
593  if (!CanCloseWithInProgressDownloads())
594    return false;
595
596  if (IsFastTabUnloadEnabled())
597    return fast_unload_controller_->ShouldCloseWindow();
598  return unload_controller_->ShouldCloseWindow();
599}
600
601bool Browser::CallBeforeUnloadHandlers(
602    const base::Callback<void(bool)>& on_close_confirmed) {
603  cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
604  if (IsFastTabUnloadEnabled()) {
605    return fast_unload_controller_->CallBeforeUnloadHandlers(
606        on_close_confirmed);
607  }
608  return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
609}
610
611void Browser::ResetBeforeUnloadHandlers() {
612  cancel_download_confirmation_state_ = NOT_PROMPTED;
613  if (IsFastTabUnloadEnabled())
614    fast_unload_controller_->ResetBeforeUnloadHandlers();
615  else
616    unload_controller_->ResetBeforeUnloadHandlers();
617}
618
619bool Browser::HasCompletedUnloadProcessing() const {
620  DCHECK(IsFastTabUnloadEnabled());
621  return fast_unload_controller_->HasCompletedUnloadProcessing();
622}
623
624bool Browser::IsAttemptingToCloseBrowser() const {
625  if (IsFastTabUnloadEnabled())
626    return fast_unload_controller_->is_attempting_to_close_browser();
627  return unload_controller_->is_attempting_to_close_browser();
628}
629
630void Browser::OnWindowClosing() {
631  if (!ShouldCloseWindow())
632    return;
633
634  // Application should shutdown on last window close if the user is explicitly
635  // trying to quit, or if there is nothing keeping the browser alive (such as
636  // AppController on the Mac, or BackgroundContentsService for background
637  // pages).
638  bool should_quit_if_last_browser =
639      browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
640
641  if (should_quit_if_last_browser &&
642      BrowserList::GetInstance(host_desktop_type_)->size() == 1) {
643    browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
644  }
645
646  // Don't use GetForProfileIfExisting here, we want to force creation of the
647  // session service so that user can restore what was open.
648  SessionService* session_service =
649      SessionServiceFactory::GetForProfile(profile());
650  if (session_service)
651    session_service->WindowClosing(session_id());
652
653  TabRestoreService* tab_restore_service =
654      TabRestoreServiceFactory::GetForProfile(profile());
655
656#if defined(USE_AURA)
657  if (tab_restore_service && is_app() && !is_devtools())
658    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
659#endif
660
661  if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
662    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
663
664  // TODO(sky): convert session/tab restore to use notification.
665  content::NotificationService::current()->Notify(
666      chrome::NOTIFICATION_BROWSER_CLOSING,
667      content::Source<Browser>(this),
668      content::NotificationService::NoDetails());
669
670  if (!IsFastTabUnloadEnabled())
671    tab_strip_model_->CloseAllTabs();
672}
673
674////////////////////////////////////////////////////////////////////////////////
675// In-progress download termination handling:
676
677void Browser::InProgressDownloadResponse(bool cancel_downloads) {
678  if (cancel_downloads) {
679    cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
680    chrome::CloseWindow(this);
681    return;
682  }
683
684  // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
685  // close again we'll show the warning again.
686  cancel_download_confirmation_state_ = NOT_PROMPTED;
687
688  // Show the download page so the user can figure-out what downloads are still
689  // in-progress.
690  chrome::ShowDownloads(this);
691}
692
693Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
694    int* num_downloads_blocking) const {
695  DCHECK(num_downloads_blocking);
696  *num_downloads_blocking = 0;
697
698  // If we're not running a full browser process with a profile manager
699  // (testing), it's ok to close the browser.
700  if (!g_browser_process->profile_manager())
701    return DOWNLOAD_CLOSE_OK;
702
703  int total_download_count =
704      DownloadService::NonMaliciousDownloadCountAllProfiles();
705  if (total_download_count == 0)
706    return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
707
708  // Figure out how many windows are open total, and associated with this
709  // profile, that are relevant for the ok-to-close decision.
710  int profile_window_count = 0;
711  int total_window_count = 0;
712  for (chrome::BrowserIterator it; !it.done(); it.Next()) {
713    // Don't count this browser window or any other in the process of closing.
714    Browser* const browser = *it;
715    // Window closing may be delayed, and windows that are in the process of
716    // closing don't count against our totals.
717    if (browser == this || browser->IsAttemptingToCloseBrowser())
718      continue;
719
720    if (it->profile() == profile())
721      profile_window_count++;
722    total_window_count++;
723  }
724
725  // If there aren't any other windows, we're at browser shutdown,
726  // which would cancel all current downloads.
727  if (total_window_count == 0) {
728    *num_downloads_blocking = total_download_count;
729    return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
730  }
731
732  // If there aren't any other windows on our profile, and we're an incognito
733  // profile, and there are downloads associated with that profile,
734  // those downloads would be cancelled by our window (-> profile) close.
735  DownloadService* download_service =
736      DownloadServiceFactory::GetForBrowserContext(profile());
737  if ((profile_window_count == 0) &&
738      (download_service->NonMaliciousDownloadCount() > 0) &&
739      profile()->IsOffTheRecord()) {
740    *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
741    return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
742  }
743
744  // Those are the only conditions under which we will block shutdown.
745  return DOWNLOAD_CLOSE_OK;
746}
747
748////////////////////////////////////////////////////////////////////////////////
749// Browser, Tab adding/showing functions:
750
751void Browser::WindowFullscreenStateChanged() {
752  fullscreen_controller_->WindowFullscreenStateChanged();
753  command_controller_->FullscreenStateChanged();
754  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
755}
756
757void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
758  // When the current tab's SSL state changes, we need to update the URL
759  // bar to reflect the new state.
760  DCHECK(web_contents);
761  if (tab_strip_model_->GetActiveWebContents() == web_contents)
762    UpdateToolbar(false);
763}
764
765void Browser::OnWebContentsInstantSupportDisabled(
766    const content::WebContents* web_contents) {
767  DCHECK(web_contents);
768  if (tab_strip_model_->GetActiveWebContents() == web_contents)
769    UpdateToolbar(false);
770}
771
772///////////////////////////////////////////////////////////////////////////////
773// Browser, Assorted browser commands:
774
775void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
776  fullscreen_controller_->ToggleFullscreenModeWithExtension(extension_url);
777}
778
779bool Browser::SupportsWindowFeature(WindowFeature feature) const {
780  return SupportsWindowFeatureImpl(feature, true);
781}
782
783bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
784  return SupportsWindowFeatureImpl(feature, false);
785}
786
787void Browser::ToggleEncodingAutoDetect() {
788  content::RecordAction(UserMetricsAction("AutoDetectChange"));
789  encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
790  // If "auto detect" is turned on, then any current override encoding
791  // is cleared. This also implicitly performs a reload.
792  // OTOH, if "auto detect" is turned off, we don't change the currently
793  // active encoding.
794  if (encoding_auto_detect_.GetValue()) {
795    WebContents* contents = tab_strip_model_->GetActiveWebContents();
796    if (contents)
797      contents->ResetOverrideEncoding();
798  }
799}
800
801void Browser::OverrideEncoding(int encoding_id) {
802  content::RecordAction(UserMetricsAction("OverrideEncoding"));
803  const std::string selected_encoding =
804      CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
805  WebContents* contents = tab_strip_model_->GetActiveWebContents();
806  if (!selected_encoding.empty() && contents)
807     contents->SetOverrideEncoding(selected_encoding);
808  // Update the list of recently selected encodings.
809  std::string new_selected_encoding_list;
810  if (CharacterEncoding::UpdateRecentlySelectedEncoding(
811        profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
812        encoding_id,
813        &new_selected_encoding_list)) {
814    profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
815                                    new_selected_encoding_list);
816  }
817}
818
819void Browser::OpenFile() {
820  content::RecordAction(UserMetricsAction("OpenFile"));
821  select_file_dialog_ = ui::SelectFileDialog::Create(
822      this, new ChromeSelectFilePolicy(
823          tab_strip_model_->GetActiveWebContents()));
824
825  const base::FilePath directory = profile_->last_selected_directory();
826
827  // TODO(beng): figure out how to juggle this.
828  gfx::NativeWindow parent_window = window_->GetNativeWindow();
829  ui::SelectFileDialog::FileTypeInfo file_types;
830  file_types.support_drive = true;
831  select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
832                                  string16(),
833                                  directory,
834                                  &file_types,
835                                  0,
836                                  base::FilePath::StringType(),
837                                  parent_window,
838                                  NULL);
839}
840
841void Browser::UpdateDownloadShelfVisibility(bool visible) {
842  if (GetStatusBubble())
843    GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
844}
845
846///////////////////////////////////////////////////////////////////////////////
847
848// static
849bool Browser::ShouldRunUnloadEventsHelper(content::WebContents* contents) {
850  if (IsFastTabUnloadEnabled())
851    return chrome::FastUnloadController::ShouldRunUnloadEventsHelper(contents);
852  return chrome::UnloadController::ShouldRunUnloadEventsHelper(contents);
853}
854
855// static
856bool Browser::RunUnloadEventsHelper(WebContents* contents) {
857  if (IsFastTabUnloadEnabled())
858    return chrome::FastUnloadController::RunUnloadEventsHelper(contents);
859  return chrome::UnloadController::RunUnloadEventsHelper(contents);
860}
861
862// static
863void Browser::JSOutOfMemoryHelper(WebContents* web_contents) {
864  InfoBarService* infobar_service =
865      InfoBarService::FromWebContents(web_contents);
866  if (!infobar_service)
867    return;
868  SimpleAlertInfoBarDelegate::Create(
869      infobar_service, InfoBarDelegate::kNoIconID,
870      l10n_util::GetStringUTF16(IDS_JS_OUT_OF_MEMORY_PROMPT), true);
871}
872
873// static
874void Browser::RegisterProtocolHandlerHelper(WebContents* web_contents,
875                                            const std::string& protocol,
876                                            const GURL& url,
877                                            const string16& title,
878                                            bool user_gesture,
879                                            BrowserWindow* window) {
880  Profile* profile =
881      Profile::FromBrowserContext(web_contents->GetBrowserContext());
882  if (profile->IsOffTheRecord())
883    return;
884
885  ProtocolHandler handler =
886      ProtocolHandler::CreateProtocolHandler(protocol, url, title);
887
888  ProtocolHandlerRegistry* registry =
889      ProtocolHandlerRegistryFactory::GetForProfile(profile);
890  if (registry->SilentlyHandleRegisterHandlerRequest(handler))
891    return;
892
893  TabSpecificContentSettings* tab_content_settings =
894      TabSpecificContentSettings::FromWebContents(web_contents);
895  if (!user_gesture && window) {
896    tab_content_settings->set_pending_protocol_handler(handler);
897    tab_content_settings->set_previous_protocol_handler(
898        registry->GetHandlerFor(handler.protocol()));
899    window->GetLocationBar()->UpdateContentSettingsIcons();
900    return;
901  }
902
903  // Make sure content-setting icon is turned off in case the page does
904  // ungestured and gestured RPH calls.
905  if (window) {
906    tab_content_settings->ClearPendingProtocolHandler();
907    window->GetLocationBar()->UpdateContentSettingsIcons();
908  }
909
910  RegisterProtocolHandlerInfoBarDelegate::Create(
911      InfoBarService::FromWebContents(web_contents), registry, handler);
912}
913
914// static
915void Browser::FindReplyHelper(WebContents* web_contents,
916                              int request_id,
917                              int number_of_matches,
918                              const gfx::Rect& selection_rect,
919                              int active_match_ordinal,
920                              bool final_update) {
921  FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
922  if (!find_tab_helper)
923    return;
924
925  find_tab_helper->HandleFindReply(request_id,
926                                   number_of_matches,
927                                   selection_rect,
928                                   active_match_ordinal,
929                                   final_update);
930}
931
932void Browser::UpdateUIForNavigationInTab(WebContents* contents,
933                                         content::PageTransition transition,
934                                         bool user_initiated) {
935  tab_strip_model_->TabNavigating(contents, transition);
936
937  bool contents_is_selected =
938      contents == tab_strip_model_->GetActiveWebContents();
939  if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
940    // Forcibly reset the location bar if the url is going to change in the
941    // current tab, since otherwise it won't discard any ongoing user edits,
942    // since it doesn't realize this is a user-initiated action.
943    window()->GetLocationBar()->Revert();
944  }
945
946  if (GetStatusBubble())
947    GetStatusBubble()->Hide();
948
949  // Update the location bar. This is synchronous. We specifically don't
950  // update the load state since the load hasn't started yet and updating it
951  // will put it out of sync with the actual state like whether we're
952  // displaying a favicon, which controls the throbber. If we updated it here,
953  // the throbber will show the default favicon for a split second when
954  // navigating away from the new tab page.
955  ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
956
957  if (contents_is_selected)
958    contents->GetView()->SetInitialFocus();
959}
960
961///////////////////////////////////////////////////////////////////////////////
962// Browser, PageNavigator implementation:
963
964WebContents* Browser::OpenURL(const OpenURLParams& params) {
965  return OpenURLFromTab(NULL, params);
966}
967
968///////////////////////////////////////////////////////////////////////////////
969// Browser, TabStripModelObserver implementation:
970
971void Browser::TabInsertedAt(WebContents* contents,
972                            int index,
973                            bool foreground) {
974  SetAsDelegate(contents, this);
975  SessionTabHelper* session_tab_helper =
976      SessionTabHelper::FromWebContents(contents);
977  session_tab_helper->SetWindowID(session_id());
978
979  content::NotificationService::current()->Notify(
980      chrome::NOTIFICATION_TAB_PARENTED,
981      content::Source<content::WebContents>(contents),
982      content::NotificationService::NoDetails());
983
984  SyncHistoryWithTabs(index);
985
986  // Make sure the loading state is updated correctly, otherwise the throbber
987  // won't start if the page is loading.
988  LoadingStateChanged(contents);
989
990  interstitial_observers_.push_back(new InterstitialObserver(this, contents));
991
992  SessionService* session_service =
993      SessionServiceFactory::GetForProfile(profile_);
994  if (session_service) {
995    session_service->TabInserted(contents);
996    int new_active_index = tab_strip_model_->active_index();
997    if (index < new_active_index)
998      session_service->SetSelectedTabInWindow(session_id(),
999                                              new_active_index);
1000  }
1001}
1002
1003void Browser::TabClosingAt(TabStripModel* tab_strip_model,
1004                           WebContents* contents,
1005                           int index) {
1006  fullscreen_controller_->OnTabClosing(contents);
1007  SessionService* session_service =
1008      SessionServiceFactory::GetForProfile(profile_);
1009  if (session_service)
1010    session_service->TabClosing(contents);
1011  content::NotificationService::current()->Notify(
1012      chrome::NOTIFICATION_TAB_CLOSING,
1013      content::Source<NavigationController>(&contents->GetController()),
1014      content::NotificationService::NoDetails());
1015
1016  // Sever the WebContents' connection back to us.
1017  SetAsDelegate(contents, NULL);
1018}
1019
1020void Browser::TabDetachedAt(WebContents* contents, int index) {
1021  // TabDetachedAt is called before TabStripModel has updated the
1022  // active index.
1023  int old_active_index = tab_strip_model_->active_index();
1024  if (index < old_active_index && !tab_strip_model_->closing_all()) {
1025    SessionService* session_service =
1026        SessionServiceFactory::GetForProfileIfExisting(profile_);
1027    if (session_service)
1028      session_service->SetSelectedTabInWindow(session_id(),
1029                                              old_active_index - 1);
1030  }
1031  TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
1032}
1033
1034void Browser::TabDeactivated(WebContents* contents) {
1035  fullscreen_controller_->OnTabDeactivated(contents);
1036  search_delegate_->OnTabDeactivated(contents);
1037  SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
1038
1039  // Save what the user's currently typing, so it can be restored when we
1040  // switch back to this tab.
1041  window_->GetLocationBar()->SaveStateToContents(contents);
1042
1043  if (instant_controller_)
1044    instant_controller_->TabDeactivated(contents);
1045}
1046
1047void Browser::ActiveTabChanged(WebContents* old_contents,
1048                               WebContents* new_contents,
1049                               int index,
1050                               int reason) {
1051  content::RecordAction(UserMetricsAction("ActiveTabChanged"));
1052
1053  // Update the bookmark state, since the BrowserWindow may query it during
1054  // OnActiveTabChanged() below.
1055  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1056
1057  // Let the BrowserWindow do its handling.  On e.g. views this changes the
1058  // focused object, which should happen before we update the toolbar below,
1059  // since the omnibox expects the correct element to already be focused when it
1060  // is updated.
1061  window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1062
1063  // Discarded tabs always get reloaded.
1064  if (tab_strip_model_->IsTabDiscarded(index)) {
1065    LOG(WARNING) << "Reloading discarded tab at " << index;
1066    static int reload_count = 0;
1067    UMA_HISTOGRAM_CUSTOM_COUNTS(
1068        "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1069    chrome::Reload(this, CURRENT_TAB);
1070  }
1071
1072  // If we have any update pending, do it now.
1073  if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1074    ProcessPendingUIUpdates();
1075
1076  // Propagate the profile to the location bar.
1077  UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1078
1079  if (chrome::IsInstantExtendedAPIEnabled())
1080    search_delegate_->OnTabActivated(new_contents);
1081
1082  // Update reload/stop state.
1083  command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1084
1085  // Update commands to reflect current state.
1086  command_controller_->TabStateChanged();
1087
1088  // Reset the status bubble.
1089  StatusBubble* status_bubble = GetStatusBubble();
1090  if (status_bubble) {
1091    status_bubble->Hide();
1092
1093    // Show the loading state (if any).
1094    status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1095        tab_strip_model_->GetActiveWebContents())->GetStatusText());
1096  }
1097
1098  if (HasFindBarController()) {
1099    find_bar_controller_->ChangeWebContents(new_contents);
1100    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1101  }
1102
1103  // Update sessions. Don't force creation of sessions. If sessions doesn't
1104  // exist, the change will be picked up by sessions when created.
1105  SessionService* session_service =
1106      SessionServiceFactory::GetForProfileIfExisting(profile_);
1107  if (session_service && !tab_strip_model_->closing_all()) {
1108    session_service->SetSelectedTabInWindow(session_id(),
1109                                            tab_strip_model_->active_index());
1110  }
1111
1112  // This needs to be called after notifying SearchDelegate.
1113  if (instant_controller_)
1114    instant_controller_->ActiveTabChanged();
1115
1116  autofill::TabAutofillManagerDelegate::FromWebContents(new_contents)->
1117      TabActivated(reason);
1118  SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1119}
1120
1121void Browser::TabMoved(WebContents* contents,
1122                       int from_index,
1123                       int to_index) {
1124  DCHECK(from_index >= 0 && to_index >= 0);
1125  // Notify the history service.
1126  SyncHistoryWithTabs(std::min(from_index, to_index));
1127}
1128
1129void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1130                            WebContents* old_contents,
1131                            WebContents* new_contents,
1132                            int index) {
1133  TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1134  fullscreen_controller_->OnTabClosing(old_contents);
1135  SessionService* session_service =
1136      SessionServiceFactory::GetForProfile(profile_);
1137  if (session_service)
1138    session_service->TabClosing(old_contents);
1139  TabInsertedAt(new_contents,
1140                index,
1141                (index == tab_strip_model_->active_index()));
1142
1143  int entry_count = new_contents->GetController().GetEntryCount();
1144  if (entry_count > 0) {
1145    // Send out notification so that observers are updated appropriately.
1146    new_contents->GetController().NotifyEntryChanged(
1147        new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1148        entry_count - 1);
1149  }
1150
1151  if (session_service) {
1152    // The new_contents may end up with a different navigation stack. Force
1153    // the session service to update itself.
1154    session_service->TabRestored(new_contents,
1155                                 tab_strip_model_->IsTabPinned(index));
1156  }
1157}
1158
1159void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1160  SessionService* session_service =
1161      SessionServiceFactory::GetForProfileIfExisting(profile());
1162  if (session_service) {
1163    SessionTabHelper* session_tab_helper =
1164        SessionTabHelper::FromWebContents(contents);
1165    session_service->SetPinnedState(session_id(),
1166                                    session_tab_helper->session_id(),
1167                                    tab_strip_model_->IsTabPinned(index));
1168  }
1169}
1170
1171void Browser::TabStripEmpty() {
1172  // Close the frame after we return to the message loop (not immediately,
1173  // otherwise it will destroy this object before the stack has a chance to
1174  // cleanly unwind.)
1175  // Note: This will be called several times if TabStripEmpty is called several
1176  //       times. This is because it does not close the window if tabs are
1177  //       still present.
1178  base::MessageLoop::current()->PostTask(
1179      FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1180
1181  // Instant may have visible WebContents that need to be detached before the
1182  // window system closes.
1183  instant_controller_.reset();
1184}
1185
1186bool Browser::CanOverscrollContent() const {
1187#if defined(USE_AURA)
1188  bool overscroll_enabled = CommandLine::ForCurrentProcess()->
1189      GetSwitchValueASCII(switches::kOverscrollHistoryNavigation) != "0";
1190  if (!overscroll_enabled)
1191    return false;
1192  if (is_app() || is_devtools() || !is_type_tabbed())
1193    return false;
1194
1195  // The detached bookmark bar has appearance of floating above the
1196  // web-contents. This does not play nicely with overscroll navigation
1197  // gestures. So disable overscroll navigation when the bookmark bar is in the
1198  // detached state.
1199  if (bookmark_bar_state_ == BookmarkBar::DETACHED)
1200    return false;
1201  return true;
1202#else
1203  return false;
1204#endif
1205}
1206
1207bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1208                                     const NativeWebKeyboardEvent& event,
1209                                     bool* is_keyboard_shortcut) {
1210  // Escape exits tabbed fullscreen mode.
1211  // TODO(koz): Write a test for this http://crbug.com/100441.
1212  if (event.windowsKeyCode == 27 &&
1213      fullscreen_controller_->HandleUserPressedEscape()) {
1214    return true;
1215  }
1216  return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1217}
1218
1219void Browser::HandleKeyboardEvent(content::WebContents* source,
1220                                  const NativeWebKeyboardEvent& event) {
1221  window()->HandleKeyboardEvent(event);
1222}
1223
1224bool Browser::TabsNeedBeforeUnloadFired() {
1225  if (IsFastTabUnloadEnabled())
1226    return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1227  return unload_controller_->TabsNeedBeforeUnloadFired();
1228}
1229
1230void Browser::OverscrollUpdate(int delta_y) {
1231  window_->OverscrollUpdate(delta_y);
1232}
1233
1234bool Browser::IsMouseLocked() const {
1235  return fullscreen_controller_->IsMouseLocked();
1236}
1237
1238void Browser::OnWindowDidShow() {
1239  if (window_has_shown_)
1240    return;
1241  window_has_shown_ = true;
1242
1243// CurrentProcessInfo::CreationTime() is missing on some platforms.
1244#if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1245  // Measure the latency from startup till the first browser window becomes
1246  // visible.
1247  static bool is_first_browser_window = true;
1248  if (is_first_browser_window &&
1249      !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1250    is_first_browser_window = false;
1251    const base::Time process_creation_time =
1252        base::CurrentProcessInfo::CreationTime();
1253
1254    if (!process_creation_time.is_null()) {
1255      UMA_HISTOGRAM_LONG_TIMES(
1256          "Startup.BrowserWindowDisplay",
1257          base::Time::Now() - process_creation_time);
1258    }
1259  }
1260#endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1261
1262  // Nothing to do for non-tabbed windows.
1263  if (!is_type_tabbed())
1264    return;
1265
1266  // Show any pending global error bubble.
1267  GlobalErrorService* service =
1268      GlobalErrorServiceFactory::GetForProfile(profile());
1269  GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1270  if (error)
1271    error->ShowBubbleView(this);
1272}
1273
1274void Browser::ShowFirstRunBubble() {
1275  window()->GetLocationBar()->ShowFirstRunBubble();
1276}
1277
1278void Browser::ShowDownload(content::DownloadItem* download) {
1279  if (!window())
1280    return;
1281
1282  // If the download occurs in a new tab, and it's not a save page
1283  // download (started before initial navigation completed) close it.
1284  WebContents* source = download->GetWebContents();
1285  if (source && source->GetController().IsInitialNavigation() &&
1286      tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1287    CloseContents(source);
1288  }
1289
1290  // Some (app downloads) are not supposed to appear on the shelf.
1291  if (!DownloadItemModel(download).ShouldShowInShelf())
1292    return;
1293
1294  // GetDownloadShelf creates the download shelf if it was not yet created.
1295  DownloadShelf* shelf = window()->GetDownloadShelf();
1296  shelf->AddDownload(download);
1297}
1298
1299///////////////////////////////////////////////////////////////////////////////
1300// Browser, content::WebContentsDelegate implementation:
1301
1302WebContents* Browser::OpenURLFromTab(WebContents* source,
1303                                     const OpenURLParams& params) {
1304  chrome::NavigateParams nav_params(this, params.url, params.transition);
1305  FillNavigateParamsFromOpenURLParams(&nav_params, params);
1306  nav_params.source_contents = source;
1307  nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1308  nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1309  nav_params.user_gesture = params.user_gesture;
1310
1311  PopupBlockerTabHelper* popup_blocker_helper = NULL;
1312  if (source)
1313    popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1314
1315  if (popup_blocker_helper) {
1316    if ((params.disposition == NEW_POPUP ||
1317         params.disposition == NEW_FOREGROUND_TAB ||
1318         params.disposition == NEW_BACKGROUND_TAB ||
1319         params.disposition == NEW_WINDOW) &&
1320        !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1321                                    switches::kDisablePopupBlocking)) {
1322      if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1323                                                WebWindowFeatures())) {
1324        return NULL;
1325      }
1326    }
1327  }
1328
1329  chrome::Navigate(&nav_params);
1330
1331  return nav_params.target_contents;
1332}
1333
1334void Browser::NavigationStateChanged(const WebContents* source,
1335                                     unsigned changed_flags) {
1336  // Only update the UI when something visible has changed.
1337  if (changed_flags)
1338    ScheduleUIUpdate(source, changed_flags);
1339
1340  // We can synchronously update commands since they will only change once per
1341  // navigation, so we don't have to worry about flickering. We do, however,
1342  // need to update the command state early on load to always present usable
1343  // actions in the face of slow-to-commit pages.
1344  if (changed_flags & (content::INVALIDATE_TYPE_URL |
1345                       content::INVALIDATE_TYPE_LOAD))
1346    command_controller_->TabStateChanged();
1347}
1348
1349void Browser::AddNewContents(WebContents* source,
1350                             WebContents* new_contents,
1351                             WindowOpenDisposition disposition,
1352                             const gfx::Rect& initial_pos,
1353                             bool user_gesture,
1354                             bool* was_blocked) {
1355  chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1356                         user_gesture, was_blocked);
1357}
1358
1359void Browser::ActivateContents(WebContents* contents) {
1360  tab_strip_model_->ActivateTabAt(
1361      tab_strip_model_->GetIndexOfWebContents(contents), false);
1362  window_->Activate();
1363}
1364
1365void Browser::DeactivateContents(WebContents* contents) {
1366  window_->Deactivate();
1367}
1368
1369void Browser::LoadingStateChanged(WebContents* source) {
1370  window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1371  window_->UpdateTitleBar();
1372
1373  WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1374  if (source == selected_contents) {
1375    bool is_loading = source->IsLoading();
1376    command_controller_->LoadingStateChanged(is_loading, false);
1377    if (GetStatusBubble()) {
1378      GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1379          tab_strip_model_->GetActiveWebContents())->GetStatusText());
1380    }
1381  }
1382}
1383
1384void Browser::CloseContents(WebContents* source) {
1385  bool can_close_contents;
1386  if (IsFastTabUnloadEnabled())
1387    can_close_contents = fast_unload_controller_->CanCloseContents(source);
1388  else
1389    can_close_contents = unload_controller_->CanCloseContents(source);
1390
1391  if (can_close_contents)
1392    chrome::CloseWebContents(this, source, true);
1393}
1394
1395void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1396  if (!IsPopupOrPanel(source)) {
1397    NOTREACHED() << "moving invalid browser type";
1398    return;
1399  }
1400  window_->SetBounds(pos);
1401}
1402
1403bool Browser::IsPopupOrPanel(const WebContents* source) const {
1404  return is_type_popup();
1405}
1406
1407void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1408                              const GURL& url) {
1409  if (!GetStatusBubble())
1410    return;
1411
1412  if (source == tab_strip_model_->GetActiveWebContents()) {
1413    PrefService* prefs = profile_->GetPrefs();
1414    GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1415  }
1416}
1417
1418void Browser::ContentsMouseEvent(
1419    WebContents* source, const gfx::Point& location, bool motion) {
1420  if (!GetStatusBubble())
1421    return;
1422
1423  if (source == tab_strip_model_->GetActiveWebContents()) {
1424    GetStatusBubble()->MouseMoved(location, !motion);
1425    if (!motion)
1426      GetStatusBubble()->SetURL(GURL(), std::string());
1427  }
1428}
1429
1430void Browser::ContentsZoomChange(bool zoom_in) {
1431  chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1432}
1433
1434void Browser::WebContentsFocused(WebContents* contents) {
1435  window_->WebContentsFocused(contents);
1436}
1437
1438bool Browser::TakeFocus(content::WebContents* source,
1439                        bool reverse) {
1440  content::NotificationService::current()->Notify(
1441      chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1442      content::Source<Browser>(this),
1443      content::NotificationService::NoDetails());
1444  return false;
1445}
1446
1447gfx::Rect Browser::GetRootWindowResizerRect() const {
1448  return window_->GetRootWindowResizerRect();
1449}
1450
1451void Browser::BeforeUnloadFired(WebContents* web_contents,
1452                                bool proceed,
1453                                bool* proceed_to_fire_unload) {
1454  if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1455        proceed, proceed_to_fire_unload))
1456    return;
1457
1458  if (IsFastTabUnloadEnabled()) {
1459    *proceed_to_fire_unload =
1460        fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1461  } else {
1462    *proceed_to_fire_unload =
1463        unload_controller_->BeforeUnloadFired(web_contents, proceed);
1464  }
1465}
1466
1467bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1468  const content::NavigationEntry* entry =
1469      source->GetController().GetVisibleEntry();
1470  if (entry) {
1471    GURL url = entry->GetURL();
1472    GURL virtual_url = entry->GetVirtualURL();
1473    if ((url.SchemeIs(chrome::kChromeUIScheme) &&
1474        url.host() == chrome::kChromeUINewTabHost) ||
1475        (virtual_url.SchemeIs(chrome::kChromeUIScheme) &&
1476        virtual_url.host() == chrome::kChromeUINewTabHost)) {
1477      return true;
1478    }
1479  }
1480
1481  return chrome::NavEntryIsInstantNTP(source, entry);
1482}
1483
1484void Browser::SetFocusToLocationBar(bool select_all) {
1485  // Two differences between this and FocusLocationBar():
1486  // (1) This doesn't get recorded in user metrics, since it's called
1487  //     internally.
1488  // (2) This checks whether the location bar can be focused, and if not, clears
1489  //     the focus.  FocusLocationBar() is only reached when the location bar is
1490  //     focusable, but this may be reached at other times, e.g. while in
1491  //     fullscreen mode, where we need to leave focus in a consistent state.
1492  window_->SetFocusToLocationBar(select_all);
1493}
1494
1495void Browser::RenderWidgetShowing() {
1496  window_->DisableInactiveFrame();
1497}
1498
1499int Browser::GetExtraRenderViewHeight() const {
1500  return window_->GetExtraRenderViewHeight();
1501}
1502
1503void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1504  DCHECK(source);
1505  chrome::ViewSource(this, source);
1506}
1507
1508void Browser::ViewSourceForFrame(WebContents* source,
1509                                 const GURL& frame_url,
1510                                 const content::PageState& frame_page_state) {
1511  DCHECK(source);
1512  chrome::ViewSource(this, source, frame_url, frame_page_state);
1513}
1514
1515void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1516  TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1517                                source);
1518}
1519
1520bool Browser::ShouldCreateWebContents(
1521    WebContents* web_contents,
1522    int route_id,
1523    WindowContainerType window_container_type,
1524    const string16& frame_name,
1525    const GURL& target_url,
1526    const std::string& partition_id,
1527    content::SessionStorageNamespace* session_storage_namespace) {
1528  if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1529    // If a BackgroundContents is created, suppress the normal WebContents.
1530    return !MaybeCreateBackgroundContents(route_id,
1531                                          web_contents,
1532                                          frame_name,
1533                                          target_url,
1534                                          partition_id,
1535                                          session_storage_namespace);
1536  }
1537
1538  return true;
1539}
1540
1541void Browser::WebContentsCreated(WebContents* source_contents,
1542                                 int64 source_frame_id,
1543                                 const string16& frame_name,
1544                                 const GURL& target_url,
1545                                 WebContents* new_contents) {
1546  // Adopt the WebContents now, so all observers are in place, as the network
1547  // requests for its initial navigation will start immediately. The WebContents
1548  // will later be inserted into this browser using Browser::Navigate via
1549  // AddNewContents.
1550  BrowserTabContents::AttachTabHelpers(new_contents);
1551
1552  // Notify.
1553  RetargetingDetails details;
1554  details.source_web_contents = source_contents;
1555  details.source_frame_id = source_frame_id;
1556  details.target_url = target_url;
1557  details.target_web_contents = new_contents;
1558  details.not_yet_in_tabstrip = true;
1559  content::NotificationService::current()->Notify(
1560      chrome::NOTIFICATION_RETARGETING,
1561      content::Source<Profile>(profile_),
1562      content::Details<RetargetingDetails>(&details));
1563}
1564
1565void Browser::RendererUnresponsive(WebContents* source) {
1566  // Ignore hangs if a tab is blocked.
1567  int index = tab_strip_model_->GetIndexOfWebContents(source);
1568  DCHECK_NE(TabStripModel::kNoTab, index);
1569  if (tab_strip_model_->IsTabBlocked(index))
1570    return;
1571
1572  chrome::ShowHungRendererDialog(source);
1573}
1574
1575void Browser::RendererResponsive(WebContents* source) {
1576  chrome::HideHungRendererDialog(source);
1577}
1578
1579void Browser::WorkerCrashed(WebContents* source) {
1580  SimpleAlertInfoBarDelegate::Create(
1581      InfoBarService::FromWebContents(source), InfoBarDelegate::kNoIconID,
1582      l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1583}
1584
1585void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1586  if (web_contents == tab_strip_model_->GetActiveWebContents())
1587    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1588}
1589
1590void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1591  if (web_contents == tab_strip_model_->GetActiveWebContents())
1592    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1593}
1594
1595content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1596  return GetJavaScriptDialogManagerInstance();
1597}
1598
1599content::ColorChooser* Browser::OpenColorChooser(WebContents* web_contents,
1600                                                 SkColor initial_color) {
1601  return chrome::ShowColorChooser(web_contents, initial_color);
1602}
1603
1604void Browser::RunFileChooser(WebContents* web_contents,
1605                             const content::FileChooserParams& params) {
1606  FileSelectHelper::RunFileChooser(web_contents, params);
1607}
1608
1609void Browser::EnumerateDirectory(WebContents* web_contents,
1610                                 int request_id,
1611                                 const base::FilePath& path) {
1612  FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1613}
1614
1615bool Browser::EmbedsFullscreenWidget() const {
1616  // TODO(miu): Make this feature switchable in about:flags?
1617  return CommandLine::ForCurrentProcess()->
1618      HasSwitch(switches::kEmbedFlashFullscreen);
1619}
1620
1621void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1622                                         bool enter_fullscreen) {
1623  fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1624                                                     enter_fullscreen);
1625}
1626
1627bool Browser::IsFullscreenForTabOrPending(
1628    const WebContents* web_contents) const {
1629  return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1630}
1631
1632void Browser::JSOutOfMemory(WebContents* web_contents) {
1633  JSOutOfMemoryHelper(web_contents);
1634}
1635
1636void Browser::RegisterProtocolHandler(WebContents* web_contents,
1637                                      const std::string& protocol,
1638                                      const GURL& url,
1639                                      const string16& title,
1640                                      bool user_gesture) {
1641  RegisterProtocolHandlerHelper(
1642      web_contents, protocol, url, title, user_gesture, window());
1643}
1644
1645void Browser::UpdatePreferredSize(WebContents* source,
1646                                  const gfx::Size& pref_size) {
1647  window_->UpdatePreferredSize(source, pref_size);
1648}
1649
1650void Browser::ResizeDueToAutoResize(WebContents* source,
1651                                    const gfx::Size& new_size) {
1652  window_->ResizeDueToAutoResize(source, new_size);
1653}
1654
1655void Browser::FindReply(WebContents* web_contents,
1656                        int request_id,
1657                        int number_of_matches,
1658                        const gfx::Rect& selection_rect,
1659                        int active_match_ordinal,
1660                        bool final_update) {
1661  FindReplyHelper(web_contents, request_id, number_of_matches, selection_rect,
1662                  active_match_ordinal, final_update);
1663}
1664
1665void Browser::RequestToLockMouse(WebContents* web_contents,
1666                                 bool user_gesture,
1667                                 bool last_unlocked_by_target) {
1668  fullscreen_controller_->RequestToLockMouse(web_contents,
1669                                             user_gesture,
1670                                             last_unlocked_by_target);
1671}
1672
1673void Browser::LostMouseLock() {
1674  fullscreen_controller_->LostMouseLock();
1675}
1676
1677void Browser::RequestMediaAccessPermission(
1678    content::WebContents* web_contents,
1679    const content::MediaStreamRequest& request,
1680    const content::MediaResponseCallback& callback) {
1681  ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1682}
1683
1684bool Browser::RequestPpapiBrokerPermission(
1685    WebContents* web_contents,
1686    const GURL& url,
1687    const base::FilePath& plugin_path,
1688    const base::Callback<void(bool)>& callback) {
1689  PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1690  return true;
1691}
1692
1693gfx::Size Browser::GetSizeForNewRenderView(
1694    const WebContents* web_contents) const {
1695  // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1696  // would disappear on non-NTP pages, resulting in a bigger size for the new
1697  // render view.
1698  gfx::Size size = web_contents->GetView()->GetContainerSize();
1699  // Don't change render view size if bookmark bar is currently not detached,
1700  // or there's no pending entry, or navigating to a NTP page.
1701  if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1702    return size;
1703  const NavigationEntry* pending_entry =
1704      web_contents->GetController().GetPendingEntry();
1705  if (pending_entry &&
1706      !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1707    size.Enlarge(
1708        0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1709  }
1710  return size;
1711}
1712
1713///////////////////////////////////////////////////////////////////////////////
1714// Browser, CoreTabHelperDelegate implementation:
1715
1716void Browser::SwapTabContents(content::WebContents* old_contents,
1717                              content::WebContents* new_contents) {
1718  int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1719  DCHECK_NE(TabStripModel::kNoTab, index);
1720  tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1721}
1722
1723bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1724  return chrome::CanReload(this);
1725}
1726
1727bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1728  return chrome::CanSavePage(this);
1729}
1730
1731///////////////////////////////////////////////////////////////////////////////
1732// Browser, SearchEngineTabHelperDelegate implementation:
1733
1734void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1735                                       Profile* profile) {
1736  window()->ConfirmAddSearchProvider(template_url, profile);
1737}
1738
1739///////////////////////////////////////////////////////////////////////////////
1740// Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1741
1742void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1743                                    bool blocked) {
1744  int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1745  if (index == TabStripModel::kNoTab) {
1746    NOTREACHED();
1747    return;
1748  }
1749  tab_strip_model_->SetTabBlocked(index, blocked);
1750  if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1751    web_contents->GetView()->Focus();
1752}
1753
1754web_modal::WebContentsModalDialogHost*
1755Browser::GetWebContentsModalDialogHost() {
1756  return window_->GetWebContentsModalDialogHost();
1757}
1758
1759///////////////////////////////////////////////////////////////////////////////
1760// Browser, BookmarkTabHelperDelegate implementation:
1761
1762void Browser::URLStarredChanged(content::WebContents* web_contents,
1763                                bool starred) {
1764  if (web_contents == tab_strip_model_->GetActiveWebContents())
1765    window_->SetStarredState(starred);
1766}
1767
1768///////////////////////////////////////////////////////////////////////////////
1769// Browser, ZoomObserver implementation:
1770
1771void Browser::OnZoomChanged(content::WebContents* source,
1772                            bool can_show_bubble) {
1773  if (source == tab_strip_model_->GetActiveWebContents()) {
1774    // Only show the zoom bubble for zoom changes in the active window.
1775    window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive());
1776  }
1777}
1778
1779///////////////////////////////////////////////////////////////////////////////
1780// Browser, ui::SelectFileDialog::Listener implementation:
1781
1782void Browser::FileSelected(const base::FilePath& path, int index,
1783                           void* params) {
1784  FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1785}
1786
1787void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1788                                        int index,
1789                                        void* params) {
1790  profile_->set_last_selected_directory(file_info.file_path.DirName());
1791
1792  GURL url = net::FilePathToFileURL(file_info.local_path);
1793
1794#if defined(OS_CHROMEOS)
1795  drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1796#endif
1797
1798  if (url.is_empty())
1799    return;
1800
1801  OpenURL(OpenURLParams(
1802      url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1803}
1804
1805///////////////////////////////////////////////////////////////////////////////
1806// Browser, content::NotificationObserver implementation:
1807
1808void Browser::Observe(int type,
1809                      const content::NotificationSource& source,
1810                      const content::NotificationDetails& details) {
1811  switch (type) {
1812    case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
1813      if (window()->GetLocationBar())
1814        window()->GetLocationBar()->UpdatePageActions();
1815
1816      const extensions::UnloadedExtensionInfo* extension_info =
1817          content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1818
1819      // Close any tabs from the unloaded extension, unless it's terminated,
1820      // in which case let the sad tabs remain.
1821      if (extension_info->reason !=
1822          extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
1823        const Extension* extension = extension_info->extension;
1824        // Iterate backwards as we may remove items while iterating.
1825        for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1826          WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1827          // Two cases are handled here:
1828          // - The scheme check is for when an extension page is loaded in a
1829          //   tab, e.g. chrome-extension://id/page.html.
1830          // - The extension_app check is for apps, which can have non-extension
1831          //   schemes, e.g. https://mail.google.com if you have the Gmail app
1832          //   installed.
1833          if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1834               web_contents->GetURL().host() == extension->id()) ||
1835              (extensions::TabHelper::FromWebContents(
1836                   web_contents)->extension_app() == extension)) {
1837            tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1838          }
1839        }
1840      }
1841      break;
1842    }
1843
1844    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1845      Profile* profile = content::Source<Profile>(source).ptr();
1846      if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1847        window()->GetLocationBar()->InvalidatePageActions();
1848      break;
1849    }
1850
1851    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
1852    case chrome::NOTIFICATION_EXTENSION_LOADED:
1853      // During window creation on Windows we may end up calling into
1854      // SHAppBarMessage, which internally spawns a nested message loop. This
1855      // makes it possible for us to end up here before window creation has
1856      // completed, at which point window_ is NULL. See 94752 for details.
1857      if (window() && window()->GetLocationBar())
1858        window()->GetLocationBar()->UpdatePageActions();
1859      break;
1860
1861#if defined(ENABLE_THEMES)
1862    case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1863      window()->UserChangedTheme();
1864      break;
1865#endif
1866
1867    case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1868      WebContents* web_contents = content::Source<WebContents>(source).ptr();
1869      if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1870        LocationBar* location_bar = window()->GetLocationBar();
1871        if (location_bar)
1872          location_bar->UpdateContentSettingsIcons();
1873      }
1874      break;
1875    }
1876
1877    default:
1878      NOTREACHED() << "Got a notification we didn't register for.";
1879  }
1880}
1881
1882///////////////////////////////////////////////////////////////////////////////
1883// Browser, Command and state updating (private):
1884
1885void Browser::OnDevToolsDisabledChanged() {
1886  if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
1887    content::DevToolsManager::GetInstance()->CloseAllClientHosts();
1888}
1889
1890///////////////////////////////////////////////////////////////////////////////
1891// Browser, UI update coalescing and handling (private):
1892
1893void Browser::UpdateToolbar(bool should_restore_state) {
1894  window_->UpdateToolbar(should_restore_state ?
1895      tab_strip_model_->GetActiveWebContents() : NULL);
1896}
1897
1898void Browser::ScheduleUIUpdate(const WebContents* source,
1899                               unsigned changed_flags) {
1900  if (!source)
1901    return;
1902
1903  // Do some synchronous updates.
1904  if (changed_flags & content::INVALIDATE_TYPE_URL &&
1905      source == tab_strip_model_->GetActiveWebContents()) {
1906    // Only update the URL for the current tab. Note that we do not update
1907    // the navigation commands since those would have already been updated
1908    // synchronously by NavigationStateChanged.
1909    UpdateToolbar(false);
1910    changed_flags &= ~content::INVALIDATE_TYPE_URL;
1911  }
1912  if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
1913    // Update the loading state synchronously. This is so the throbber will
1914    // immediately start/stop, which gives a more snappy feel. We want to do
1915    // this for any tab so they start & stop quickly.
1916    tab_strip_model_->UpdateWebContentsStateAt(
1917        tab_strip_model_->GetIndexOfWebContents(source),
1918        TabStripModelObserver::LOADING_ONLY);
1919    // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
1920    // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
1921    // changed_flags.
1922  }
1923
1924  if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
1925    // To correctly calculate whether the title changed while not loading
1926    // we need to process the update synchronously. This state only matters for
1927    // the TabStripModel, so we notify the TabStripModel now and notify others
1928    // asynchronously.
1929    tab_strip_model_->UpdateWebContentsStateAt(
1930        tab_strip_model_->GetIndexOfWebContents(source),
1931        TabStripModelObserver::TITLE_NOT_LOADING);
1932  }
1933
1934  // If the only updates were synchronously handled above, we're done.
1935  if (changed_flags == 0)
1936    return;
1937
1938  // Save the dirty bits.
1939  scheduled_updates_[source] |= changed_flags;
1940
1941  if (!chrome_updater_factory_.HasWeakPtrs()) {
1942    // No task currently scheduled, start another.
1943    base::MessageLoop::current()->PostDelayedTask(
1944        FROM_HERE,
1945        base::Bind(&Browser::ProcessPendingUIUpdates,
1946                   chrome_updater_factory_.GetWeakPtr()),
1947        base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
1948  }
1949}
1950
1951void Browser::ProcessPendingUIUpdates() {
1952#ifndef NDEBUG
1953  // Validate that all tabs we have pending updates for exist. This is scary
1954  // because the pending list must be kept in sync with any detached or
1955  // deleted tabs.
1956  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1957       i != scheduled_updates_.end(); ++i) {
1958    bool found = false;
1959    for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
1960      if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
1961        found = true;
1962        break;
1963      }
1964    }
1965    DCHECK(found);
1966  }
1967#endif
1968
1969  chrome_updater_factory_.InvalidateWeakPtrs();
1970
1971  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1972       i != scheduled_updates_.end(); ++i) {
1973    // Do not dereference |contents|, it may be out-of-date!
1974    const WebContents* contents = i->first;
1975    unsigned flags = i->second;
1976
1977    if (contents == tab_strip_model_->GetActiveWebContents()) {
1978      // Updates that only matter when the tab is selected go here.
1979
1980      if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
1981        LocationBar* location_bar = window()->GetLocationBar();
1982        if (location_bar)
1983          location_bar->UpdatePageActions();
1984      }
1985      // Updating the URL happens synchronously in ScheduleUIUpdate.
1986      if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
1987        GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1988            tab_strip_model_->GetActiveWebContents())->GetStatusText());
1989      }
1990
1991      if (flags & (content::INVALIDATE_TYPE_TAB |
1992                   content::INVALIDATE_TYPE_TITLE)) {
1993        window_->UpdateTitleBar();
1994      }
1995    }
1996
1997    // Updates that don't depend upon the selected state go here.
1998    if (flags &
1999        (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2000      tab_strip_model_->UpdateWebContentsStateAt(
2001          tab_strip_model_->GetIndexOfWebContents(contents),
2002          TabStripModelObserver::ALL);
2003    }
2004
2005    // Update the bookmark bar. It may happen that the tab is crashed, and if
2006    // so, the bookmark bar should be hidden.
2007    if (flags & content::INVALIDATE_TYPE_TAB)
2008      UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2009
2010    // We don't need to process INVALIDATE_STATE, since that's not visible.
2011  }
2012
2013  scheduled_updates_.clear();
2014}
2015
2016void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2017  if (!contents)
2018    return;
2019
2020  UpdateMap::iterator i = scheduled_updates_.find(contents);
2021  if (i != scheduled_updates_.end())
2022    scheduled_updates_.erase(i);
2023}
2024
2025///////////////////////////////////////////////////////////////////////////////
2026// Browser, Getters for UI (private):
2027
2028StatusBubble* Browser::GetStatusBubble() {
2029  // In kiosk and exclusive app mode, we want to always hide the status bubble.
2030  if (chrome::IsRunningInAppMode())
2031    return NULL;
2032
2033  return window_ ? window_->GetStatusBubble() : NULL;
2034}
2035
2036///////////////////////////////////////////////////////////////////////////////
2037// Browser, Session restore functions (private):
2038
2039void Browser::SyncHistoryWithTabs(int index) {
2040  SessionService* session_service =
2041      SessionServiceFactory::GetForProfileIfExisting(profile());
2042  if (session_service) {
2043    for (int i = index; i < tab_strip_model_->count(); ++i) {
2044      WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2045      if (web_contents) {
2046        SessionTabHelper* session_tab_helper =
2047            SessionTabHelper::FromWebContents(web_contents);
2048        session_service->SetTabIndexInWindow(
2049            session_id(), session_tab_helper->session_id(), i);
2050        session_service->SetPinnedState(
2051            session_id(),
2052            session_tab_helper->session_id(),
2053            tab_strip_model_->IsTabPinned(i));
2054      }
2055    }
2056  }
2057}
2058
2059///////////////////////////////////////////////////////////////////////////////
2060// Browser, In-progress download termination handling (private):
2061
2062bool Browser::CanCloseWithInProgressDownloads() {
2063  // If we've prompted, we need to hear from the user before we
2064  // can close.
2065  if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2066    return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2067
2068  int num_downloads_blocking;
2069  Browser::DownloadClosePreventionType dialog_type =
2070      OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2071  if (dialog_type == DOWNLOAD_CLOSE_OK)
2072    return true;
2073
2074  // Closing this window will kill some downloads; prompt to make sure
2075  // that's ok.
2076  cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2077  window_->ConfirmBrowserCloseWithPendingDownloads(
2078      num_downloads_blocking,
2079      dialog_type,
2080      false,
2081      base::Bind(&Browser::InProgressDownloadResponse,
2082                 weak_factory_.GetWeakPtr()));
2083
2084  // Return false so the browser does not close.  We'll close if the user
2085  // confirms in the dialog.
2086  return false;
2087}
2088
2089///////////////////////////////////////////////////////////////////////////////
2090// Browser, Assorted utility functions (private):
2091
2092void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
2093  // WebContents...
2094  web_contents->SetDelegate(delegate);
2095
2096  // ...and all the helpers.
2097  BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2098  WebContentsModalDialogManager::FromWebContents(web_contents)->
2099      SetDelegate(delegate);
2100  CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2101  SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2102  ZoomController::FromWebContents(web_contents)->set_observer(delegate);
2103  TranslateTabHelper* translate_tab_helper =
2104      TranslateTabHelper::FromWebContents(web_contents);
2105  translate_tab_helper->language_state().set_observer(
2106      delegate ? delegate->language_state_observer_.get() : NULL);
2107}
2108
2109void Browser::CloseFrame() {
2110  window_->Close();
2111}
2112
2113void Browser::TabDetachedAtImpl(content::WebContents* contents,
2114                                int index,
2115                                DetachType type) {
2116  if (type == DETACH_TYPE_DETACH) {
2117    // Save the current location bar state, but only if the tab being detached
2118    // is the selected tab.  Because saving state can conditionally revert the
2119    // location bar, saving the current tab's location bar state to a
2120    // non-selected tab can corrupt both tabs.
2121    if (contents == tab_strip_model_->GetActiveWebContents()) {
2122      LocationBar* location_bar = window()->GetLocationBar();
2123      if (location_bar)
2124        location_bar->SaveStateToContents(contents);
2125    }
2126
2127    if (!tab_strip_model_->closing_all())
2128      SyncHistoryWithTabs(0);
2129  }
2130
2131  SetAsDelegate(contents, NULL);
2132  RemoveScheduledUpdatesFor(contents);
2133
2134  if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2135    find_bar_controller_->ChangeWebContents(NULL);
2136  }
2137
2138  // Stop observing search model changes for this tab.
2139  search_delegate_->OnTabDetached(contents);
2140
2141  for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2142    if (interstitial_observers_[i]->web_contents() != contents)
2143      continue;
2144
2145    delete interstitial_observers_[i];
2146    interstitial_observers_.erase(interstitial_observers_.begin() + i);
2147    return;
2148  }
2149}
2150
2151bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2152                                        bool check_fullscreen) const {
2153  bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2154
2155  unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2156
2157  if (is_type_tabbed())
2158    features |= FEATURE_BOOKMARKBAR;
2159
2160  if (!hide_ui_for_fullscreen) {
2161    if (!is_type_tabbed())
2162      features |= FEATURE_TITLEBAR;
2163
2164    if (is_type_tabbed())
2165      features |= FEATURE_TABSTRIP;
2166
2167    if (is_type_tabbed())
2168      features |= FEATURE_TOOLBAR;
2169
2170    if (!is_app() || CommandLine::ForCurrentProcess()->HasSwitch(
2171                         switches::kEnableStreamlinedHostedApps))
2172      features |= FEATURE_LOCATIONBAR;
2173  }
2174  return !!(features & feature);
2175}
2176
2177void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2178  BookmarkBar::State state;
2179  // The bookmark bar is hidden in fullscreen mode, unless on the new tab page.
2180  if (browser_defaults::bookmarks_enabled &&
2181      profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2182      !ShouldHideUIForFullscreen()) {
2183    state = BookmarkBar::SHOW;
2184  } else {
2185    WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2186    BookmarkTabHelper* bookmark_tab_helper =
2187        web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2188    if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2189      state = BookmarkBar::DETACHED;
2190    else
2191      state = BookmarkBar::HIDDEN;
2192  }
2193
2194  if (state == bookmark_bar_state_)
2195    return;
2196
2197  bookmark_bar_state_ = state;
2198
2199  if (!window_)
2200    return;  // This is called from the constructor when window_ is NULL.
2201
2202  if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2203    // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2204    // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2205    // end up querying state once they process the tab switch.
2206    return;
2207  }
2208
2209  bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2210  window_->BookmarkBarStateChanged(shouldAnimate ?
2211      BookmarkBar::ANIMATE_STATE_CHANGE :
2212      BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2213}
2214
2215bool Browser::ShouldHideUIForFullscreen() const {
2216  // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2217  // keep the controls in a slide-down panel.
2218  return window_ && window_->ShouldHideUIForFullscreen();
2219}
2220
2221bool Browser::MaybeCreateBackgroundContents(
2222    int route_id,
2223    WebContents* opener_web_contents,
2224    const string16& frame_name,
2225    const GURL& target_url,
2226    const std::string& partition_id,
2227    content::SessionStorageNamespace* session_storage_namespace) {
2228  GURL opener_url = opener_web_contents->GetURL();
2229  ExtensionService* extensions_service =
2230      extensions::ExtensionSystem::Get(profile_)->extension_service();
2231
2232  if (!opener_url.is_valid() ||
2233      frame_name.empty() ||
2234      !extensions_service ||
2235      !extensions_service->is_ready())
2236    return false;
2237
2238  // Only hosted apps have web extents, so this ensures that only hosted apps
2239  // can create BackgroundContents. We don't have to check for background
2240  // permission as that is checked in RenderMessageFilter when the CreateWindow
2241  // message is processed.
2242  const Extension* extension =
2243      extensions_service->extensions()->GetHostedAppByURL(opener_url);
2244  if (!extension)
2245    return false;
2246
2247  // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2248  BackgroundContentsService* service =
2249      BackgroundContentsServiceFactory::GetForProfile(profile_);
2250  if (!service)
2251    return false;
2252
2253  // Ensure that we're trying to open this from the extension's process.
2254  SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2255  extensions::ProcessMap* process_map = extensions_service->process_map();
2256  if (!opener_site_instance->GetProcess() ||
2257      !process_map->Contains(
2258          extension->id(), opener_site_instance->GetProcess()->GetID())) {
2259    return false;
2260  }
2261
2262  // Only allow a single background contents per app.
2263  bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2264  BackgroundContents* existing =
2265      service->GetAppBackgroundContents(ASCIIToUTF16(extension->id()));
2266  if (existing) {
2267    // For non-scriptable background contents, ignore the request altogether,
2268    // (returning true, so that a regular WebContents isn't created either).
2269    if (!allow_js_access)
2270      return true;
2271    // For scriptable background pages, if one already exists, close it (even
2272    // if it was specified in the manifest).
2273    DLOG(INFO) << "Closing existing BackgroundContents for " << opener_url;
2274    delete existing;
2275  }
2276
2277  // If script access is not allowed, create the the background contents in a
2278  // new SiteInstance, so that a separate process is used.
2279  scoped_refptr<content::SiteInstance> site_instance =
2280      allow_js_access ?
2281      opener_site_instance :
2282      content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2283
2284  // Passed all the checks, so this should be created as a BackgroundContents.
2285  BackgroundContents* contents =
2286      service->CreateBackgroundContents(site_instance.get(),
2287                                        route_id,
2288                                        profile_,
2289                                        frame_name,
2290                                        ASCIIToUTF16(extension->id()),
2291                                        partition_id,
2292                                        session_storage_namespace);
2293
2294  // When a separate process is used, the original renderer cannot access the
2295  // new window later, thus we need to navigate the window now.
2296  if (contents && !allow_js_access) {
2297    contents->web_contents()->GetController().LoadURL(
2298        target_url,
2299        content::Referrer(),
2300        content::PAGE_TRANSITION_LINK,
2301        std::string());  // No extra headers.
2302  }
2303
2304  return contents != NULL;
2305}
2306