chrome/browser/ui/browser.cc

   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/browser_process.h"
  36 #include "chrome/browser/browser_shutdown.h"
  37 #include "chrome/browser/character_encoding.h"
  38 #include "chrome/browser/chrome_notification_types.h"
  39 #include "chrome/browser/chrome_page_zoom.h"
  40 #include "chrome/browser/content_settings/host_content_settings_map.h"
  41 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  42 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
  43 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  44 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
  45 #include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
  46 #include "chrome/browser/defaults.h"
  47 #include "chrome/browser/devtools/devtools_toggle_action.h"
  48 #include "chrome/browser/devtools/devtools_window.h"
  49 #include "chrome/browser/download/download_item_model.h"
  50 #include "chrome/browser/download/download_service.h"
  51 #include "chrome/browser/download/download_service_factory.h"
  52 #include "chrome/browser/download/download_shelf.h"
  53 #include "chrome/browser/extensions/api/tabs/tabs_event_router.h"
  54 #include "chrome/browser/extensions/api/tabs/tabs_windows_api.h"
  55 #include "chrome/browser/extensions/browser_extension_window_controller.h"
  56 #include "chrome/browser/extensions/extension_service.h"
  57 #include "chrome/browser/extensions/extension_util.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/history/top_sites.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_metrics.h"
  72 #include "chrome/browser/repost_form_warning_controller.h"
  73 #include "chrome/browser/search/search.h"
  74 #include "chrome/browser/sessions/session_service.h"
  75 #include "chrome/browser/sessions/session_service_factory.h"
  76 #include "chrome/browser/sessions/session_tab_helper.h"
  77 #include "chrome/browser/sessions/session_types.h"
  78 #include "chrome/browser/sessions/tab_restore_service.h"
  79 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  80 #include "chrome/browser/sync/profile_sync_service.h"
  81 #include "chrome/browser/sync/profile_sync_service_factory.h"
  82 #include "chrome/browser/sync/sync_ui_util.h"
  83 #include "chrome/browser/tab_contents/background_contents.h"
  84 #include "chrome/browser/tab_contents/retargeting_details.h"
  85 #include "chrome/browser/tab_contents/tab_util.h"
  86 #include "chrome/browser/themes/theme_service.h"
  87 #include "chrome/browser/themes/theme_service_factory.h"
  88 #include "chrome/browser/translate/chrome_translate_client.h"
  89 #include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
  90 #include "chrome/browser/ui/autofill/chrome_autofill_client.h"
  91 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
  92 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  93 #include "chrome/browser/ui/bookmarks/bookmark_utils.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_content_translate_driver_observer.h"
  98 #include "chrome/browser/ui/browser_dialogs.h"
  99 #include "chrome/browser/ui/browser_finder.h"
 100 #include "chrome/browser/ui/browser_instant_controller.h"
 101 #include "chrome/browser/ui/browser_iterator.h"
 102 #include "chrome/browser/ui/browser_list.h"
 103 #include "chrome/browser/ui/browser_navigator.h"
 104 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 105 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 106 #include "chrome/browser/ui/browser_tabstrip.h"
 107 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 108 #include "chrome/browser/ui/browser_ui_prefs.h"
 109 #include "chrome/browser/ui/browser_window.h"
 110 #include "chrome/browser/ui/chrome_pages.h"
 111 #include "chrome/browser/ui/chrome_select_file_policy.h"
 112 #include "chrome/browser/ui/fast_unload_controller.h"
 113 #include "chrome/browser/ui/find_bar/find_bar.h"
 114 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 115 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 116 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 117 #include "chrome/browser/ui/global_error/global_error.h"
 118 #include "chrome/browser/ui/global_error/global_error_service.h"
 119 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 120 #include "chrome/browser/ui/location_bar/location_bar.h"
 121 #include "chrome/browser/ui/media_utils.h"
 122 #include "chrome/browser/ui/search/search_delegate.h"
 123 #include "chrome/browser/ui/search/search_model.h"
 124 #include "chrome/browser/ui/search/search_tab_helper.h"
 125 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 126 #include "chrome/browser/ui/settings_window_manager.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_helpers.h"
 132 #include "chrome/browser/ui/tab_modal_confirm_dialog.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/tabs/tab_strip_model_utils.h"
 136 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 137 #include "chrome/browser/ui/unload_controller.h"
 138 #include "chrome/browser/ui/validation_message_bubble.h"
 139 #include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
 140 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 141 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 142 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 143 #include "chrome/browser/ui/zoom/zoom_controller.h"
 144 #include "chrome/browser/upgrade_detector.h"
 145 #include "chrome/browser/web_applications/web_app.h"
 146 #include "chrome/common/chrome_constants.h"
 147 #include "chrome/common/chrome_switches.h"
 148 #include "chrome/common/custom_handlers/protocol_handler.h"
 149 #include "chrome/common/pref_names.h"
 150 #include "chrome/common/profiling.h"
 151 #include "chrome/common/search_types.h"
 152 #include "chrome/common/url_constants.h"
 153 #include "chrome/grit/chromium_strings.h"
 154 #include "chrome/grit/generated_resources.h"
 155 #include "chrome/grit/locale_settings.h"
 156 #include "components/bookmarks/browser/bookmark_model.h"
 157 #include "components/bookmarks/browser/bookmark_utils.h"
 158 #include "components/google/core/browser/google_url_tracker.h"
 159 #include "components/search/search.h"
 160 #include "components/startup_metric_utils/startup_metric_utils.h"
 161 #include "components/web_modal/popup_manager.h"
 162 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 163 #include "content/public/browser/devtools_agent_host.h"
 164 #include "content/public/browser/download_item.h"
 165 #include "content/public/browser/download_manager.h"
 166 #include "content/public/browser/interstitial_page.h"
 167 #include "content/public/browser/invalidate_type.h"
 168 #include "content/public/browser/navigation_controller.h"
 169 #include "content/public/browser/navigation_entry.h"
 170 #include "content/public/browser/notification_details.h"
 171 #include "content/public/browser/notification_service.h"
 172 #include "content/public/browser/plugin_service.h"
 173 #include "content/public/browser/render_process_host.h"
 174 #include "content/public/browser/render_view_host.h"
 175 #include "content/public/browser/render_widget_host_view.h"
 176 #include "content/public/browser/site_instance.h"
 177 #include "content/public/browser/user_metrics.h"
 178 #include "content/public/browser/web_contents.h"
 179 #include "content/public/common/content_switches.h"
 180 #include "content/public/common/page_zoom.h"
 181 #include "content/public/common/renderer_preferences.h"
 182 #include "content/public/common/webplugininfo.h"
 183 #include "extensions/browser/extension_prefs.h"
 184 #include "extensions/browser/extension_registry.h"
 185 #include "extensions/browser/extension_system.h"
 186 #include "extensions/common/constants.h"
 187 #include "extensions/common/extension.h"
 188 #include "extensions/common/manifest_handlers/background_info.h"
 189 #include "net/base/filename_util.h"
 190 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 191 #include "net/cookies/cookie_monster.h"
 192 #include "net/url_request/url_request_context.h"
 193 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 194 #include "ui/base/l10n/l10n_util.h"
 195 #include "ui/base/window_open_disposition.h"
 196 #include "ui/gfx/point.h"
 197 #include "ui/shell_dialogs/selected_file_info.h"
 198
 199 #if defined(OS_WIN)
 200 #include "base/win/metro.h"
 201 #include "chrome/browser/ssl/ssl_error_info.h"
 202 #include "chrome/browser/task_manager/task_manager.h"
 203 #include "chrome/browser/ui/view_ids.h"
 204 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 205 #include "ui/base/touch/touch_device.h"
 206 #include "ui/base/win/shell.h"
 207 #endif  // OS_WIN
 208
 209 #if defined(OS_CHROMEOS)
 210 #include "chrome/browser/chromeos/fileapi/external_file_url_util.h"
 211 #endif
 212
 213 #if defined(USE_ASH)
 214 #include "ash/ash_switches.h"
 215 #endif
 216
 217 using base::TimeDelta;
 218 using base::UserMetricsAction;
 219 using content::NativeWebKeyboardEvent;
 220 using content::NavigationController;
 221 using content::NavigationEntry;
 222 using content::OpenURLParams;
 223 using content::PluginService;
 224 using content::Referrer;
 225 using content::RenderWidgetHostView;
 226 using content::SiteInstance;
 227 using content::WebContents;
 228 using extensions::Extension;
 229 using ui::WebDialogDelegate;
 230 using web_modal::WebContentsModalDialogManager;
 231 using blink::WebWindowFeatures;
 232
 233 ///////////////////////////////////////////////////////////////////////////////
 234
 235 namespace {
 236
 237 // How long we wait before updating the browser chrome while loading a page.
 238 const int kUIUpdateCoalescingTimeMS = 200;
 239
 240 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 241   return BrowserWindow::CreateBrowserWindow(browser);
 242 }
 243
 244 // Is the fast tab unload experiment enabled?
 245 bool IsFastTabUnloadEnabled() {
 246   return CommandLine::ForCurrentProcess()->HasSwitch(
 247         switches::kEnableFastUnload);
 248 }
 249
 250 }  // namespace
 251
 252 ////////////////////////////////////////////////////////////////////////////////
 253 // Browser, CreateParams:
 254
 255 Browser::CreateParams::CreateParams(Profile* profile,
 256                                     chrome::HostDesktopType host_desktop_type)
 257     : type(TYPE_TABBED),
 258       profile(profile),
 259       host_desktop_type(host_desktop_type),
 260       trusted_source(false),
 261       initial_show_state(ui::SHOW_STATE_DEFAULT),
 262       is_session_restore(false),
 263       window(NULL) {
 264 }
 265
 266 Browser::CreateParams::CreateParams(Type type,
 267                                     Profile* profile,
 268                                     chrome::HostDesktopType host_desktop_type)
 269     : type(type),
 270       profile(profile),
 271       host_desktop_type(host_desktop_type),
 272       trusted_source(false),
 273       initial_show_state(ui::SHOW_STATE_DEFAULT),
 274       is_session_restore(false),
 275       window(NULL) {
 276 }
 277
 278 // static
 279 Browser::CreateParams Browser::CreateParams::CreateForApp(
 280     const std::string& app_name,
 281     bool trusted_source,
 282     const gfx::Rect& window_bounds,
 283     Profile* profile,
 284     chrome::HostDesktopType host_desktop_type) {
 285   DCHECK(!app_name.empty());
 286
 287   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 288   params.app_name = app_name;
 289   params.trusted_source = trusted_source;
 290   params.initial_bounds = window_bounds;
 291
 292   return params;
 293 }
 294
 295 // static
 296 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 297     Profile* profile,
 298     chrome::HostDesktopType host_desktop_type) {
 299   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 300   params.app_name = DevToolsWindow::kDevToolsApp;
 301   params.trusted_source = true;
 302   return params;
 303 }
 304
 305 ////////////////////////////////////////////////////////////////////////////////
 306 // Browser, InterstitialObserver:
 307
 308 class Browser::InterstitialObserver : public content::WebContentsObserver {
 309  public:
 310   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 311       : WebContentsObserver(web_contents),
 312         browser_(browser) {
 313   }
 314
 315   virtual void DidAttachInterstitialPage() override {
 316     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 317   }
 318
 319   virtual void DidDetachInterstitialPage() override {
 320     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 321   }
 322
 323  private:
 324   Browser* browser_;
 325
 326   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 327 };
 328
 329 ///////////////////////////////////////////////////////////////////////////////
 330 // Browser, Constructors, Creation, Showing:
 331
 332 Browser::Browser(const CreateParams& params)
 333     : extension_registry_observer_(this),
 334       type_(params.type),
 335       profile_(params.profile),
 336       window_(NULL),
 337       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 338       tab_strip_model_(
 339           new TabStripModel(tab_strip_model_delegate_.get(), params.profile)),
 340       app_name_(params.app_name),
 341       is_trusted_source_(params.trusted_source),
 342       cancel_download_confirmation_state_(NOT_PROMPTED),
 343       override_bounds_(params.initial_bounds),
 344       initial_show_state_(params.initial_show_state),
 345       is_session_restore_(params.is_session_restore),
 346       host_desktop_type_(
 347           BrowserWindow::AdjustHostDesktopType(params.host_desktop_type)),
 348       content_setting_bubble_model_delegate_(
 349           new BrowserContentSettingBubbleModelDelegate(this)),
 350       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 351       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 352       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 353       bookmark_bar_state_(BookmarkBar::HIDDEN),
 354       command_controller_(new chrome::BrowserCommandController(this)),
 355       window_has_shown_(false),
 356       chrome_updater_factory_(this),
 357       translate_driver_observer_(
 358           new BrowserContentTranslateDriverObserver(this)),
 359       weak_factory_(this) {
 360   // If this causes a crash then a window is being opened using a profile type
 361   // that is disallowed by policy. The crash prevents the disabled window type
 362   // from opening at all, but the path that triggered it should be fixed.
 363   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 364   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 365       << "Only off the record browser may be opened in guest mode";
 366
 367   // TODO(jeremy): Move to initializer list once flag is removed.
 368   if (IsFastTabUnloadEnabled())
 369     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 370   else
 371     unload_controller_.reset(new chrome::UnloadController(this));
 372
 373   tab_strip_model_->AddObserver(this);
 374
 375   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 376   search_model_.reset(new SearchModel());
 377   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 378
 379   extension_registry_observer_.Add(
 380       extensions::ExtensionRegistry::Get(profile_));
 381   registrar_.Add(this,
 382                  extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 383                  content::NotificationService::AllSources());
 384 #if defined(ENABLE_THEMES)
 385   registrar_.Add(
 386       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 387       content::Source<ThemeService>(
 388           ThemeServiceFactory::GetForProfile(profile_)));
 389 #endif
 390   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 391                  content::NotificationService::AllSources());
 392
 393   profile_pref_registrar_.Init(profile_->GetPrefs());
 394   profile_pref_registrar_.Add(
 395       prefs::kDevToolsDisabled,
 396       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 397   profile_pref_registrar_.Add(
 398       bookmarks::prefs::kShowBookmarkBar,
 399       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 400                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 401
 402   BrowserList::AddBrowser(this);
 403
 404   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 405   // or you'll get a nasty surprise when you run the incognito tests.
 406   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 407                              profile_->GetPrefs());
 408
 409   if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 410     instant_controller_.reset(new BrowserInstantController(this));
 411
 412   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 413
 414   ProfileMetrics::LogProfileLaunch(profile_);
 415
 416   window_ = params.window ? params.window : CreateBrowserWindow(this);
 417
 418   // Create the extension window controller before sending notifications.
 419   extension_window_controller_.reset(
 420       new BrowserExtensionWindowController(this));
 421
 422   SessionService* session_service =
 423       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 424   if (session_service)
 425     session_service->WindowOpened(this);
 426
 427   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 428   //             replace uses of this with BL's notifications.
 429   content::NotificationService::current()->Notify(
 430       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 431       content::Source<Browser>(this),
 432       content::NotificationService::NoDetails());
 433
 434   // TODO(beng): move to ChromeBrowserMain:
 435   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 436 #if defined(OS_WIN)
 437     // Notify PDM that this is a first run.
 438     ImportAutofillDataWin(
 439         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 440 #endif  // defined(OS_WIN)
 441   }
 442
 443   fullscreen_controller_.reset(new FullscreenController(this));
 444
 445   // Must be initialized after window_.
 446   // Also: surprise! a modal dialog host is not necessary to host modal dialogs
 447   // without a modal dialog host, so that value may be null.
 448   popup_manager_.reset(new web_modal::PopupManager(
 449       GetWebContentsModalDialogHost()));
 450 }
 451
 452 Browser::~Browser() {
 453   // Stop observing notifications before continuing with destruction. Profile
 454   // destruction will unload extensions and reentrant calls to Browser:: should
 455   // be avoided while it is being torn down.
 456   registrar_.RemoveAll();
 457   extension_registry_observer_.RemoveAll();
 458
 459   // The tab strip should not have any tabs at this point.
 460   DCHECK(tab_strip_model_->empty());
 461   tab_strip_model_->RemoveObserver(this);
 462
 463   // Destroy the BrowserCommandController before removing the browser, so that
 464   // it doesn't act on any notifications that are sent as a result of removing
 465   // the browser.
 466   command_controller_.reset();
 467   BrowserList::RemoveBrowser(this);
 468
 469   SessionService* session_service =
 470       SessionServiceFactory::GetForProfile(profile_);
 471   if (session_service)
 472     session_service->WindowClosed(session_id_);
 473
 474   TabRestoreService* tab_restore_service =
 475       TabRestoreServiceFactory::GetForProfile(profile());
 476   if (tab_restore_service)
 477     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 478
 479 #if !defined(OS_MACOSX)
 480   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 481     // We're the last browser window with this profile. We need to nuke the
 482     // TabRestoreService, which will start the shutdown of the
 483     // NavigationControllers and allow for proper shutdown. If we don't do this
 484     // chrome won't shutdown cleanly, and may end up crashing when some
 485     // thread tries to use the IO thread (or another thread) that is no longer
 486     // valid.
 487     // This isn't a valid assumption for Mac OS, as it stays running after
 488     // the last browser has closed. The Mac equivalent is in its app
 489     // controller.
 490     TabRestoreServiceFactory::ResetForProfile(profile_);
 491   }
 492 #endif
 493
 494   profile_pref_registrar_.RemoveAll();
 495
 496   encoding_auto_detect_.Destroy();
 497
 498   // Destroy BrowserExtensionWindowController before the incognito profile
 499   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 500   extension_window_controller_.reset();
 501
 502   // Destroy BrowserInstantController before the incongnito profile is destroyed
 503   // because the InstantController destructor depends on this profile.
 504   instant_controller_.reset();
 505
 506   if (profile_->IsOffTheRecord() &&
 507       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 508     // An incognito profile is no longer needed, this indirectly frees
 509     // its cache and cookies once it gets destroyed at the appropriate time.
 510     ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 511   }
 512
 513   // There may be pending file dialogs, we need to tell them that we've gone
 514   // away so they don't try and call back to us.
 515   if (select_file_dialog_.get())
 516     select_file_dialog_->ListenerDestroyed();
 517
 518   int num_downloads;
 519   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 520           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 521       !browser_defaults::kBrowserAliveWithNoWindows) {
 522     DownloadService::CancelAllDownloads();
 523   }
 524 }
 525
 526 ///////////////////////////////////////////////////////////////////////////////
 527 // Getters & Setters
 528
 529 FindBarController* Browser::GetFindBarController() {
 530   if (!find_bar_controller_.get()) {
 531     FindBar* find_bar = window_->CreateFindBar();
 532     find_bar_controller_.reset(new FindBarController(find_bar));
 533     find_bar->SetFindBarController(find_bar_controller_.get());
 534     find_bar_controller_->ChangeWebContents(
 535         tab_strip_model_->GetActiveWebContents());
 536     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
 537   }
 538   return find_bar_controller_.get();
 539 }
 540
 541 bool Browser::HasFindBarController() const {
 542   return find_bar_controller_.get() != NULL;
 543 }
 544
 545 bool Browser::is_app() const {
 546   return !app_name_.empty();
 547 }
 548
 549 bool Browser::is_devtools() const {
 550   return app_name_ == DevToolsWindow::kDevToolsApp;
 551 }
 552
 553 ///////////////////////////////////////////////////////////////////////////////
 554 // Browser, State Storage and Retrieval for UI:
 555
 556 gfx::Image Browser::GetCurrentPageIcon() const {
 557   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 558   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 559   // window during the window's creation (before tabs have been added).
 560   FaviconTabHelper* favicon_tab_helper =
 561       web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
 562   return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
 563 }
 564
 565 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 566   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 567   base::string16 title;
 568
 569   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 570   // window during the window's creation (before tabs have been added).
 571   if (contents) {
 572     // Streamlined hosted apps use the host instead of the title.
 573     if (is_app() && extensions::util::IsStreamlinedHostedAppsEnabled())
 574       return base::UTF8ToUTF16(contents->GetURL().host());
 575
 576     title = contents->GetTitle();
 577     FormatTitleForDisplay(&title);
 578   }
 579   if (title.empty())
 580     title = CoreTabHelper::GetDefaultTitle();
 581
 582 #if defined(OS_MACOSX)
 583   // On Mac, we don't want to suffix the page title with
 584   // the application name.
 585   return title;
 586 #elif defined(USE_ASH)
 587   // On Ash, we don't want to suffix the page title with the application name,
 588   // but on Windows, where USE_ASH can also be true, we still want the prefix
 589   // on desktop.
 590   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 591     return title;
 592 #endif
 593   // Don't append the app name to window titles on app frames and app popups
 594   return is_app() ?
 595       title :
 596       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 597 }
 598
 599 // static
 600 void Browser::FormatTitleForDisplay(base::string16* title) {
 601   size_t current_index = 0;
 602   size_t match_index;
 603   while ((match_index = title->find(L'\n', current_index)) !=
 604          base::string16::npos) {
 605     title->replace(match_index, 1, base::string16());
 606     current_index = match_index;
 607   }
 608 }
 609
 610 ///////////////////////////////////////////////////////////////////////////////
 611 // Browser, OnBeforeUnload handling:
 612
 613 bool Browser::ShouldCloseWindow() {
 614   if (!CanCloseWithInProgressDownloads())
 615     return false;
 616
 617   if (IsFastTabUnloadEnabled())
 618     return fast_unload_controller_->ShouldCloseWindow();
 619   return unload_controller_->ShouldCloseWindow();
 620 }
 621
 622 bool Browser::CallBeforeUnloadHandlers(
 623     const base::Callback<void(bool)>& on_close_confirmed) {
 624   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 625   if (IsFastTabUnloadEnabled()) {
 626     return fast_unload_controller_->CallBeforeUnloadHandlers(
 627         on_close_confirmed);
 628   }
 629   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 630 }
 631
 632 void Browser::ResetBeforeUnloadHandlers() {
 633   cancel_download_confirmation_state_ = NOT_PROMPTED;
 634   if (IsFastTabUnloadEnabled())
 635     fast_unload_controller_->ResetBeforeUnloadHandlers();
 636   else
 637     unload_controller_->ResetBeforeUnloadHandlers();
 638 }
 639
 640 bool Browser::HasCompletedUnloadProcessing() const {
 641   DCHECK(IsFastTabUnloadEnabled());
 642   return fast_unload_controller_->HasCompletedUnloadProcessing();
 643 }
 644
 645 bool Browser::IsAttemptingToCloseBrowser() const {
 646   if (IsFastTabUnloadEnabled())
 647     return fast_unload_controller_->is_attempting_to_close_browser();
 648   return unload_controller_->is_attempting_to_close_browser();
 649 }
 650
 651 void Browser::OnWindowClosing() {
 652   if (!ShouldCloseWindow())
 653     return;
 654
 655   // Application should shutdown on last window close if the user is explicitly
 656   // trying to quit, or if there is nothing keeping the browser alive (such as
 657   // AppController on the Mac, or BackgroundContentsService for background
 658   // pages).
 659   bool should_quit_if_last_browser =
 660       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 661
 662   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
 663     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 664
 665   // Don't use GetForProfileIfExisting here, we want to force creation of the
 666   // session service so that user can restore what was open.
 667   SessionService* session_service =
 668       SessionServiceFactory::GetForProfile(profile());
 669   if (session_service)
 670     session_service->WindowClosing(session_id());
 671
 672   TabRestoreService* tab_restore_service =
 673       TabRestoreServiceFactory::GetForProfile(profile());
 674
 675 #if defined(USE_AURA)
 676   if (tab_restore_service && is_app() && !is_devtools())
 677     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 678 #endif
 679
 680   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 681     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 682
 683   // TODO(sky): convert session/tab restore to use notification.
 684   content::NotificationService::current()->Notify(
 685       chrome::NOTIFICATION_BROWSER_CLOSING,
 686       content::Source<Browser>(this),
 687       content::NotificationService::NoDetails());
 688
 689   if (!IsFastTabUnloadEnabled())
 690     tab_strip_model_->CloseAllTabs();
 691 }
 692
 693 ////////////////////////////////////////////////////////////////////////////////
 694 // In-progress download termination handling:
 695
 696 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 697   if (cancel_downloads) {
 698     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 699     chrome::CloseWindow(this);
 700     return;
 701   }
 702
 703   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 704   // close again we'll show the warning again.
 705   cancel_download_confirmation_state_ = NOT_PROMPTED;
 706
 707   // Show the download page so the user can figure-out what downloads are still
 708   // in-progress.
 709   chrome::ShowDownloads(this);
 710
 711   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 712   // prompt every time any tab is closed. http://crbug.com/305516
 713   if (IsFastTabUnloadEnabled())
 714     fast_unload_controller_->CancelWindowClose();
 715   else
 716     unload_controller_->CancelWindowClose();
 717 }
 718
 719 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 720     int* num_downloads_blocking) const {
 721   DCHECK(num_downloads_blocking);
 722   *num_downloads_blocking = 0;
 723
 724   // If we're not running a full browser process with a profile manager
 725   // (testing), it's ok to close the browser.
 726   if (!g_browser_process->profile_manager())
 727     return DOWNLOAD_CLOSE_OK;
 728
 729   int total_download_count =
 730       DownloadService::NonMaliciousDownloadCountAllProfiles();
 731   if (total_download_count == 0)
 732     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 733
 734   // Figure out how many windows are open total, and associated with this
 735   // profile, that are relevant for the ok-to-close decision.
 736   int profile_window_count = 0;
 737   int total_window_count = 0;
 738   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 739     // Don't count this browser window or any other in the process of closing.
 740     Browser* const browser = *it;
 741     // Window closing may be delayed, and windows that are in the process of
 742     // closing don't count against our totals.
 743     if (browser == this || browser->IsAttemptingToCloseBrowser())
 744       continue;
 745
 746     if (it->profile() == profile())
 747       profile_window_count++;
 748     total_window_count++;
 749   }
 750
 751   // If there aren't any other windows, we're at browser shutdown,
 752   // which would cancel all current downloads.
 753   if (total_window_count == 0) {
 754     *num_downloads_blocking = total_download_count;
 755     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 756   }
 757
 758   // If there aren't any other windows on our profile, and we're an incognito
 759   // profile, and there are downloads associated with that profile,
 760   // those downloads would be cancelled by our window (-> profile) close.
 761   DownloadService* download_service =
 762       DownloadServiceFactory::GetForBrowserContext(profile());
 763   if ((profile_window_count == 0) &&
 764       (download_service->NonMaliciousDownloadCount() > 0) &&
 765       profile()->IsOffTheRecord()) {
 766     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 767     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 768   }
 769
 770   // Those are the only conditions under which we will block shutdown.
 771   return DOWNLOAD_CLOSE_OK;
 772 }
 773
 774 ////////////////////////////////////////////////////////////////////////////////
 775 // Browser, Tab adding/showing functions:
 776
 777 void Browser::WindowFullscreenStateChanged() {
 778   fullscreen_controller_->WindowFullscreenStateChanged();
 779   command_controller_->FullscreenStateChanged();
 780   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 781 }
 782
 783 ///////////////////////////////////////////////////////////////////////////////
 784 // Browser, Assorted browser commands:
 785
 786 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 787   fullscreen_controller_->
 788       ToggleBrowserFullscreenModeWithExtension(extension_url);
 789 }
 790
 791 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 792   return SupportsWindowFeatureImpl(feature, true);
 793 }
 794
 795 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 796   return SupportsWindowFeatureImpl(feature, false);
 797 }
 798
 799 void Browser::ToggleEncodingAutoDetect() {
 800   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 801   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 802   // If "auto detect" is turned on, then any current override encoding
 803   // is cleared. This also implicitly performs a reload.
 804   // OTOH, if "auto detect" is turned off, we don't change the currently
 805   // active encoding.
 806   if (encoding_auto_detect_.GetValue()) {
 807     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 808     if (contents)
 809       contents->ResetOverrideEncoding();
 810   }
 811 }
 812
 813 void Browser::OverrideEncoding(int encoding_id) {
 814   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 815   const std::string selected_encoding =
 816       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 817   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 818   if (!selected_encoding.empty() && contents)
 819      contents->SetOverrideEncoding(selected_encoding);
 820   // Update the list of recently selected encodings.
 821   std::string new_selected_encoding_list;
 822   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 823         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 824         encoding_id,
 825         &new_selected_encoding_list)) {
 826     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 827                                     new_selected_encoding_list);
 828   }
 829 }
 830
 831 void Browser::OpenFile() {
 832   content::RecordAction(UserMetricsAction("OpenFile"));
 833   select_file_dialog_ = ui::SelectFileDialog::Create(
 834       this, new ChromeSelectFilePolicy(
 835           tab_strip_model_->GetActiveWebContents()));
 836
 837   const base::FilePath directory = profile_->last_selected_directory();
 838
 839   // TODO(beng): figure out how to juggle this.
 840   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 841   ui::SelectFileDialog::FileTypeInfo file_types;
 842   file_types.support_drive = true;
 843   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 844                                   base::string16(),
 845                                   directory,
 846                                   &file_types,
 847                                   0,
 848                                   base::FilePath::StringType(),
 849                                   parent_window,
 850                                   NULL);
 851 }
 852
 853 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 854   if (GetStatusBubble())
 855     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 856 }
 857
 858 ///////////////////////////////////////////////////////////////////////////////
 859
 860 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 861                                          ui::PageTransition transition,
 862                                          bool user_initiated) {
 863   tab_strip_model_->TabNavigating(contents, transition);
 864
 865   bool contents_is_selected =
 866       contents == tab_strip_model_->GetActiveWebContents();
 867   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 868     // Forcibly reset the location bar if the url is going to change in the
 869     // current tab, since otherwise it won't discard any ongoing user edits,
 870     // since it doesn't realize this is a user-initiated action.
 871     window()->GetLocationBar()->Revert();
 872   }
 873
 874   if (GetStatusBubble())
 875     GetStatusBubble()->Hide();
 876
 877   // Update the location bar. This is synchronous. We specifically don't
 878   // update the load state since the load hasn't started yet and updating it
 879   // will put it out of sync with the actual state like whether we're
 880   // displaying a favicon, which controls the throbber. If we updated it here,
 881   // the throbber will show the default favicon for a split second when
 882   // navigating away from the new tab page.
 883   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 884
 885   if (contents_is_selected)
 886     contents->SetInitialFocus();
 887 }
 888
 889 ///////////////////////////////////////////////////////////////////////////////
 890 // Browser, PageNavigator implementation:
 891
 892 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 893   return OpenURLFromTab(NULL, params);
 894 }
 895
 896 ///////////////////////////////////////////////////////////////////////////////
 897 // Browser, TabStripModelObserver implementation:
 898
 899 void Browser::TabInsertedAt(WebContents* contents,
 900                             int index,
 901                             bool foreground) {
 902   SetAsDelegate(contents, true);
 903
 904   if (popup_manager_)
 905     popup_manager_->RegisterWith(contents);
 906
 907   SessionTabHelper* session_tab_helper =
 908       SessionTabHelper::FromWebContents(contents);
 909   session_tab_helper->SetWindowID(session_id());
 910
 911   content::NotificationService::current()->Notify(
 912       chrome::NOTIFICATION_TAB_PARENTED,
 913       content::Source<content::WebContents>(contents),
 914       content::NotificationService::NoDetails());
 915
 916   SyncHistoryWithTabs(index);
 917
 918   // Make sure the loading state is updated correctly, otherwise the throbber
 919   // won't start if the page is loading.
 920   LoadingStateChanged(contents, true);
 921
 922   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 923
 924   SessionService* session_service =
 925       SessionServiceFactory::GetForProfile(profile_);
 926   if (session_service) {
 927     session_service->TabInserted(contents);
 928     int new_active_index = tab_strip_model_->active_index();
 929     if (index < new_active_index)
 930       session_service->SetSelectedTabInWindow(session_id(),
 931                                               new_active_index);
 932   }
 933 }
 934
 935 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 936                            WebContents* contents,
 937                            int index) {
 938   fullscreen_controller_->OnTabClosing(contents);
 939   SessionService* session_service =
 940       SessionServiceFactory::GetForProfile(profile_);
 941   if (session_service)
 942     session_service->TabClosing(contents);
 943   content::NotificationService::current()->Notify(
 944       chrome::NOTIFICATION_TAB_CLOSING,
 945       content::Source<NavigationController>(&contents->GetController()),
 946       content::NotificationService::NoDetails());
 947
 948   if (popup_manager_)
 949     popup_manager_->UnregisterWith(contents);
 950
 951   // Sever the WebContents' connection back to us.
 952   SetAsDelegate(contents, false);
 953 }
 954
 955 void Browser::TabDetachedAt(WebContents* contents, int index) {
 956   // TabDetachedAt is called before TabStripModel has updated the
 957   // active index.
 958   int old_active_index = tab_strip_model_->active_index();
 959   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 960     SessionService* session_service =
 961         SessionServiceFactory::GetForProfileIfExisting(profile_);
 962     if (session_service)
 963       session_service->SetSelectedTabInWindow(session_id(),
 964                                               old_active_index - 1);
 965   }
 966
 967   if (popup_manager_)
 968     popup_manager_->UnregisterWith(contents);
 969
 970   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
 971 }
 972
 973 void Browser::TabDeactivated(WebContents* contents) {
 974   fullscreen_controller_->OnTabDeactivated(contents);
 975   search_delegate_->OnTabDeactivated(contents);
 976   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
 977
 978   // Save what the user's currently typing, so it can be restored when we
 979   // switch back to this tab.
 980   window_->GetLocationBar()->SaveStateToContents(contents);
 981
 982   if (instant_controller_)
 983     instant_controller_->TabDeactivated(contents);
 984 }
 985
 986 void Browser::ActiveTabChanged(WebContents* old_contents,
 987                                WebContents* new_contents,
 988                                int index,
 989                                int reason) {
 990   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
 991
 992   // Update the bookmark state, since the BrowserWindow may query it during
 993   // OnActiveTabChanged() below.
 994   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
 995
 996   // Let the BrowserWindow do its handling.  On e.g. views this changes the
 997   // focused object, which should happen before we update the toolbar below,
 998   // since the omnibox expects the correct element to already be focused when it
 999   // is updated.
1000   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1001
1002   fullscreen_controller_->OnTabDetachedFromView(old_contents);
1003
1004   // Discarded tabs always get reloaded.
1005   if (tab_strip_model_->IsTabDiscarded(index)) {
1006     LOG(WARNING) << "Reloading discarded tab at " << index;
1007     static int reload_count = 0;
1008     UMA_HISTOGRAM_CUSTOM_COUNTS(
1009         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1010     chrome::Reload(this, CURRENT_TAB);
1011   }
1012
1013   // If we have any update pending, do it now.
1014   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1015     ProcessPendingUIUpdates();
1016
1017   // Propagate the profile to the location bar.
1018   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1019
1020   if (chrome::IsInstantExtendedAPIEnabled())
1021     search_delegate_->OnTabActivated(new_contents);
1022
1023   // Update reload/stop state.
1024   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1025
1026   // Update commands to reflect current state.
1027   command_controller_->TabStateChanged();
1028
1029   // Reset the status bubble.
1030   StatusBubble* status_bubble = GetStatusBubble();
1031   if (status_bubble) {
1032     status_bubble->Hide();
1033
1034     // Show the loading state (if any).
1035     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1036         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1037   }
1038
1039   if (HasFindBarController()) {
1040     find_bar_controller_->ChangeWebContents(new_contents);
1041     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1042   }
1043
1044   // Update sessions. Don't force creation of sessions. If sessions doesn't
1045   // exist, the change will be picked up by sessions when created.
1046   SessionService* session_service =
1047       SessionServiceFactory::GetForProfileIfExisting(profile_);
1048   if (session_service && !tab_strip_model_->closing_all()) {
1049     session_service->SetSelectedTabInWindow(session_id(),
1050                                             tab_strip_model_->active_index());
1051   }
1052
1053   // This needs to be called after notifying SearchDelegate.
1054   if (instant_controller_)
1055     instant_controller_->ActiveTabChanged();
1056
1057   autofill::ChromeAutofillClient::FromWebContents(new_contents)->TabActivated();
1058   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1059 }
1060
1061 void Browser::TabMoved(WebContents* contents,
1062                        int from_index,
1063                        int to_index) {
1064   DCHECK(from_index >= 0 && to_index >= 0);
1065   // Notify the history service.
1066   SyncHistoryWithTabs(std::min(from_index, to_index));
1067 }
1068
1069 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1070                             WebContents* old_contents,
1071                             WebContents* new_contents,
1072                             int index) {
1073   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1074   fullscreen_controller_->OnTabClosing(old_contents);
1075   SessionService* session_service =
1076       SessionServiceFactory::GetForProfile(profile_);
1077   if (session_service)
1078     session_service->TabClosing(old_contents);
1079   TabInsertedAt(new_contents,
1080                 index,
1081                 (index == tab_strip_model_->active_index()));
1082
1083   int entry_count = new_contents->GetController().GetEntryCount();
1084   if (entry_count > 0) {
1085     // Send out notification so that observers are updated appropriately.
1086     new_contents->GetController().NotifyEntryChanged(
1087         new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1088         entry_count - 1);
1089   }
1090
1091   if (session_service) {
1092     // The new_contents may end up with a different navigation stack. Force
1093     // the session service to update itself.
1094     session_service->TabRestored(new_contents,
1095                                  tab_strip_model_->IsTabPinned(index));
1096   }
1097 }
1098
1099 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1100   SessionService* session_service =
1101       SessionServiceFactory::GetForProfileIfExisting(profile());
1102   if (session_service) {
1103     SessionTabHelper* session_tab_helper =
1104         SessionTabHelper::FromWebContents(contents);
1105     session_service->SetPinnedState(session_id(),
1106                                     session_tab_helper->session_id(),
1107                                     tab_strip_model_->IsTabPinned(index));
1108   }
1109 }
1110
1111 void Browser::TabStripEmpty() {
1112   // Close the frame after we return to the message loop (not immediately,
1113   // otherwise it will destroy this object before the stack has a chance to
1114   // cleanly unwind.)
1115   // Note: This will be called several times if TabStripEmpty is called several
1116   //       times. This is because it does not close the window if tabs are
1117   //       still present.
1118   base::MessageLoop::current()->PostTask(
1119       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1120
1121   // Instant may have visible WebContents that need to be detached before the
1122   // window system closes.
1123   instant_controller_.reset();
1124 }
1125
1126 bool Browser::CanOverscrollContent() const {
1127 #if defined(OS_WIN)
1128   // Don't enable overscroll on Windows machines unless they have a touch
1129   // screen as these machines typically don't have a touchpad capable of
1130   // horizontal scrolling. We are purposefully biased towards "no" here,
1131   // so that we don't waste resources capturing screenshots for horizontal
1132   // overscroll navigation unnecessarily.
1133   bool allow_overscroll = ui::IsTouchDevicePresent();
1134 #elif defined(USE_AURA)
1135   bool allow_overscroll = true;
1136 #else
1137   bool allow_overscroll = false;
1138 #endif
1139
1140   if (!allow_overscroll)
1141     return false;
1142
1143   const std::string value = CommandLine::ForCurrentProcess()->
1144       GetSwitchValueASCII(switches::kOverscrollHistoryNavigation);
1145   bool overscroll_enabled = value != "0";
1146   if (!overscroll_enabled)
1147     return false;
1148   if (is_app() || is_devtools() || !is_type_tabbed())
1149     return false;
1150
1151   // The detached bookmark bar has appearance of floating above the
1152   // web-contents. This does not play nicely with overscroll navigation
1153   // gestures. So disable overscroll navigation when the bookmark bar is in the
1154   // detached state and the overscroll effect moves the layers.
1155   if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1156     return false;
1157   return true;
1158 }
1159
1160 bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
1161   // Allow failed URLs to stick around in the omnibox on the NTP, but not when
1162   // other pages have committed.
1163   Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
1164   if (!profile || !source->GetController().GetLastCommittedEntry())
1165     return false;
1166   GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
1167   return chrome::IsNTPURL(committed_url, profile);
1168 }
1169
1170 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1171                                      const NativeWebKeyboardEvent& event,
1172                                      bool* is_keyboard_shortcut) {
1173   // Escape exits tabbed fullscreen mode.
1174   // TODO(koz): Write a test for this http://crbug.com/100441.
1175   if (event.windowsKeyCode == 27 &&
1176       fullscreen_controller_->HandleUserPressedEscape()) {
1177     return true;
1178   }
1179   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1180 }
1181
1182 void Browser::HandleKeyboardEvent(content::WebContents* source,
1183                                   const NativeWebKeyboardEvent& event) {
1184   DevToolsWindow* devtools_window =
1185       DevToolsWindow::GetInstanceForInspectedWebContents(source);
1186   bool handled = false;
1187   if (devtools_window)
1188     handled = devtools_window->ForwardKeyboardEvent(event);
1189
1190   if (!handled)
1191     window()->HandleKeyboardEvent(event);
1192 }
1193
1194 bool Browser::TabsNeedBeforeUnloadFired() {
1195   if (IsFastTabUnloadEnabled())
1196     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1197   return unload_controller_->TabsNeedBeforeUnloadFired();
1198 }
1199
1200 void Browser::OverscrollUpdate(float delta_y) {
1201   window_->OverscrollUpdate(delta_y);
1202 }
1203
1204 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1205                                     const gfx::Rect& anchor_in_root_view,
1206                                     const base::string16& main_text,
1207                                     const base::string16& sub_text) {
1208   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1209   if (rwhv) {
1210     validation_message_bubble_ =
1211         chrome::ValidationMessageBubble::CreateAndShow(
1212             rwhv->GetRenderWidgetHost(),
1213             anchor_in_root_view,
1214             main_text,
1215             sub_text);
1216   }
1217 }
1218
1219 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1220   validation_message_bubble_.reset();
1221 }
1222
1223 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1224                                     const gfx::Rect& anchor_in_root_view) {
1225   if (!validation_message_bubble_)
1226     return;
1227   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1228   if (rwhv) {
1229     validation_message_bubble_->SetPositionRelativeToAnchor(
1230         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1231   }
1232 }
1233
1234 bool Browser::PreHandleGestureEvent(content::WebContents* source,
1235                                     const blink::WebGestureEvent& event) {
1236   // Disable pinch zooming in undocked dev tools window due to poor UX.
1237   if (app_name() == DevToolsWindow::kDevToolsApp)
1238     return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1239            event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1240            event.type == blink::WebGestureEvent::GesturePinchEnd;
1241
1242   return false;
1243 }
1244
1245 bool Browser::CanDragEnter(content::WebContents* source,
1246                            const content::DropData& data,
1247                            blink::WebDragOperationsMask operations_allowed) {
1248   // Disallow drag-and-drop navigation for Settings windows which do not support
1249   // external navigation.
1250   if ((operations_allowed & blink::WebDragOperationLink) &&
1251       chrome::SettingsWindowManager::GetInstance()->IsSettingsBrowser(this)) {
1252     return false;
1253   }
1254   return true;
1255 }
1256
1257 bool Browser::IsMouseLocked() const {
1258   return fullscreen_controller_->IsMouseLocked();
1259 }
1260
1261 void Browser::OnWindowDidShow() {
1262   if (window_has_shown_)
1263     return;
1264   window_has_shown_ = true;
1265
1266 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1267 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1268   // Measure the latency from startup till the first browser window becomes
1269   // visible.
1270   static bool is_first_browser_window = true;
1271   if (is_first_browser_window &&
1272       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1273     is_first_browser_window = false;
1274     const base::Time process_creation_time =
1275         base::CurrentProcessInfo::CreationTime();
1276
1277     if (!process_creation_time.is_null()) {
1278       UMA_HISTOGRAM_LONG_TIMES(
1279           "Startup.BrowserWindowDisplay",
1280           base::Time::Now() - process_creation_time);
1281     }
1282   }
1283 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1284
1285   // Nothing to do for non-tabbed windows.
1286   if (!is_type_tabbed())
1287     return;
1288
1289   // Show any pending global error bubble.
1290   GlobalErrorService* service =
1291       GlobalErrorServiceFactory::GetForProfile(profile());
1292   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1293   if (error)
1294     error->ShowBubbleView(this);
1295 }
1296
1297 void Browser::ShowFirstRunBubble() {
1298   window()->GetLocationBar()->ShowFirstRunBubble();
1299 }
1300
1301 void Browser::ShowDownload(content::DownloadItem* download) {
1302   if (!window())
1303     return;
1304
1305   // If the download occurs in a new tab, and it's not a save page
1306   // download (started before initial navigation completed) close it.
1307   WebContents* source = download->GetWebContents();
1308   if (source && source->GetController().IsInitialNavigation() &&
1309       tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1310     CloseContents(source);
1311   }
1312
1313   // Some (app downloads) are not supposed to appear on the shelf.
1314   if (!DownloadItemModel(download).ShouldShowInShelf())
1315     return;
1316
1317   // GetDownloadShelf creates the download shelf if it was not yet created.
1318   DownloadShelf* shelf = window()->GetDownloadShelf();
1319   shelf->AddDownload(download);
1320 }
1321
1322 ///////////////////////////////////////////////////////////////////////////////
1323 // Browser, content::WebContentsDelegate implementation:
1324
1325 WebContents* Browser::OpenURLFromTab(WebContents* source,
1326                                      const OpenURLParams& params) {
1327   chrome::NavigateParams nav_params(this, params.url, params.transition);
1328   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1329   nav_params.source_contents = source;
1330   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1331   if (params.user_gesture)
1332     nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1333   nav_params.user_gesture = params.user_gesture;
1334
1335   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1336   if (source)
1337     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1338
1339   if (popup_blocker_helper) {
1340     if ((params.disposition == NEW_POPUP ||
1341          params.disposition == NEW_FOREGROUND_TAB ||
1342          params.disposition == NEW_BACKGROUND_TAB ||
1343          params.disposition == NEW_WINDOW) &&
1344         !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1345                                     switches::kDisablePopupBlocking)) {
1346       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1347                                                 WebWindowFeatures())) {
1348         return NULL;
1349       }
1350     }
1351   }
1352
1353   chrome::Navigate(&nav_params);
1354
1355   return nav_params.target_contents;
1356 }
1357
1358 void Browser::NavigationStateChanged(const WebContents* source,
1359                                      content::InvalidateTypes changed_flags) {
1360   // Only update the UI when something visible has changed.
1361   if (changed_flags)
1362     ScheduleUIUpdate(source, changed_flags);
1363
1364   // We can synchronously update commands since they will only change once per
1365   // navigation, so we don't have to worry about flickering. We do, however,
1366   // need to update the command state early on load to always present usable
1367   // actions in the face of slow-to-commit pages.
1368   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1369                        content::INVALIDATE_TYPE_LOAD))
1370     command_controller_->TabStateChanged();
1371 }
1372
1373 void Browser::VisibleSSLStateChanged(const WebContents* source) {
1374   // When the current tab's SSL state changes, we need to update the URL
1375   // bar to reflect the new state.
1376   DCHECK(source);
1377   if (tab_strip_model_->GetActiveWebContents() == source)
1378     UpdateToolbar(false);
1379 }
1380
1381 void Browser::AddNewContents(WebContents* source,
1382                              WebContents* new_contents,
1383                              WindowOpenDisposition disposition,
1384                              const gfx::Rect& initial_pos,
1385                              bool user_gesture,
1386                              bool* was_blocked) {
1387   chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1388                          user_gesture, was_blocked);
1389 }
1390
1391 void Browser::ActivateContents(WebContents* contents) {
1392   tab_strip_model_->ActivateTabAt(
1393       tab_strip_model_->GetIndexOfWebContents(contents), false);
1394   window_->Activate();
1395 }
1396
1397 void Browser::DeactivateContents(WebContents* contents) {
1398   window_->Deactivate();
1399 }
1400
1401 void Browser::LoadingStateChanged(WebContents* source,
1402     bool to_different_document) {
1403   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1404   window_->UpdateTitleBar();
1405
1406   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1407   if (source == selected_contents) {
1408     bool is_loading = source->IsLoading() && to_different_document;
1409     command_controller_->LoadingStateChanged(is_loading, false);
1410     if (GetStatusBubble()) {
1411       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1412           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1413     }
1414   }
1415 }
1416
1417 void Browser::CloseContents(WebContents* source) {
1418   bool can_close_contents;
1419   if (IsFastTabUnloadEnabled())
1420     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1421   else
1422     can_close_contents = unload_controller_->CanCloseContents(source);
1423
1424   if (can_close_contents)
1425     chrome::CloseWebContents(this, source, true);
1426 }
1427
1428 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1429   if (!IsPopupOrPanel(source)) {
1430     NOTREACHED() << "moving invalid browser type";
1431     return;
1432   }
1433   window_->SetBounds(pos);
1434 }
1435
1436 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1437   return is_type_popup();
1438 }
1439
1440 void Browser::UpdateTargetURL(WebContents* source, const GURL& url) {
1441   if (!GetStatusBubble())
1442     return;
1443
1444   if (source == tab_strip_model_->GetActiveWebContents()) {
1445     PrefService* prefs = profile_->GetPrefs();
1446     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1447   }
1448 }
1449
1450 void Browser::ContentsMouseEvent(
1451     WebContents* source, const gfx::Point& location, bool motion) {
1452   if (!GetStatusBubble())
1453     return;
1454
1455   if (source == tab_strip_model_->GetActiveWebContents()) {
1456     GetStatusBubble()->MouseMoved(location, !motion);
1457     if (!motion)
1458       GetStatusBubble()->SetURL(GURL(), std::string());
1459   }
1460 }
1461
1462 void Browser::ContentsZoomChange(bool zoom_in) {
1463   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1464 }
1465
1466 void Browser::WebContentsFocused(WebContents* contents) {
1467   window_->WebContentsFocused(contents);
1468 }
1469
1470 bool Browser::TakeFocus(content::WebContents* source,
1471                         bool reverse) {
1472   content::NotificationService::current()->Notify(
1473       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1474       content::Source<Browser>(this),
1475       content::NotificationService::NoDetails());
1476   return false;
1477 }
1478
1479 gfx::Rect Browser::GetRootWindowResizerRect() const {
1480   return window_->GetRootWindowResizerRect();
1481 }
1482
1483 void Browser::BeforeUnloadFired(WebContents* web_contents,
1484                                 bool proceed,
1485                                 bool* proceed_to_fire_unload) {
1486   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1487         proceed, proceed_to_fire_unload))
1488     return;
1489
1490   if (IsFastTabUnloadEnabled()) {
1491     *proceed_to_fire_unload =
1492         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1493   } else {
1494     *proceed_to_fire_unload =
1495         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1496   }
1497 }
1498
1499 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1500   const content::NavigationEntry* entry =
1501       source->GetController().GetActiveEntry();
1502   if (entry) {
1503     GURL url = entry->GetURL();
1504     GURL virtual_url = entry->GetVirtualURL();
1505     if ((url.SchemeIs(content::kChromeUIScheme) &&
1506         url.host() == chrome::kChromeUINewTabHost) ||
1507         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1508         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1509       return true;
1510     }
1511   }
1512
1513   return chrome::NavEntryIsInstantNTP(source, entry);
1514 }
1515
1516 void Browser::SetFocusToLocationBar(bool select_all) {
1517   // Two differences between this and FocusLocationBar():
1518   // (1) This doesn't get recorded in user metrics, since it's called
1519   //     internally.
1520   // (2) This checks whether the location bar can be focused, and if not, clears
1521   //     the focus.  FocusLocationBar() is only reached when the location bar is
1522   //     focusable, but this may be reached at other times, e.g. while in
1523   //     fullscreen mode, where we need to leave focus in a consistent state.
1524   window_->SetFocusToLocationBar(select_all);
1525 }
1526
1527 int Browser::GetExtraRenderViewHeight() const {
1528   return window_->GetExtraRenderViewHeight();
1529 }
1530
1531 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1532   DCHECK(source);
1533   chrome::ViewSource(this, source);
1534 }
1535
1536 void Browser::ViewSourceForFrame(WebContents* source,
1537                                  const GURL& frame_url,
1538                                  const content::PageState& frame_page_state) {
1539   DCHECK(source);
1540   chrome::ViewSource(this, source, frame_url, frame_page_state);
1541 }
1542
1543 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1544   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1545                                 source);
1546 }
1547
1548 bool Browser::ShouldCreateWebContents(
1549     WebContents* web_contents,
1550     int route_id,
1551     WindowContainerType window_container_type,
1552     const base::string16& frame_name,
1553     const GURL& target_url,
1554     const std::string& partition_id,
1555     content::SessionStorageNamespace* session_storage_namespace) {
1556   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1557     // If a BackgroundContents is created, suppress the normal WebContents.
1558     return !MaybeCreateBackgroundContents(route_id,
1559                                           web_contents,
1560                                           frame_name,
1561                                           target_url,
1562                                           partition_id,
1563                                           session_storage_namespace);
1564   }
1565
1566   return true;
1567 }
1568
1569 void Browser::WebContentsCreated(WebContents* source_contents,
1570                                  int opener_render_frame_id,
1571                                  const base::string16& frame_name,
1572                                  const GURL& target_url,
1573                                  WebContents* new_contents) {
1574   // Adopt the WebContents now, so all observers are in place, as the network
1575   // requests for its initial navigation will start immediately. The WebContents
1576   // will later be inserted into this browser using Browser::Navigate via
1577   // AddNewContents.
1578   TabHelpers::AttachTabHelpers(new_contents);
1579
1580   // Notify.
1581   RetargetingDetails details;
1582   details.source_web_contents = source_contents;
1583   details.source_render_frame_id = opener_render_frame_id;
1584   details.target_url = target_url;
1585   details.target_web_contents = new_contents;
1586   details.not_yet_in_tabstrip = true;
1587   content::NotificationService::current()->Notify(
1588       chrome::NOTIFICATION_RETARGETING,
1589       content::Source<Profile>(profile_),
1590       content::Details<RetargetingDetails>(&details));
1591 }
1592
1593 void Browser::RendererUnresponsive(WebContents* source) {
1594   // Ignore hangs if a tab is blocked.
1595   int index = tab_strip_model_->GetIndexOfWebContents(source);
1596   DCHECK_NE(TabStripModel::kNoTab, index);
1597   if (tab_strip_model_->IsTabBlocked(index))
1598     return;
1599
1600   chrome::ShowHungRendererDialog(source);
1601 }
1602
1603 void Browser::RendererResponsive(WebContents* source) {
1604   chrome::HideHungRendererDialog(source);
1605 }
1606
1607 void Browser::WorkerCrashed(WebContents* source) {
1608   SimpleAlertInfoBarDelegate::Create(
1609       InfoBarService::FromWebContents(source),
1610       infobars::InfoBarDelegate::kNoIconID,
1611       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1612 }
1613
1614 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1615   if (web_contents == tab_strip_model_->GetActiveWebContents())
1616     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1617 }
1618
1619 void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1620   if (web_contents == tab_strip_model_->GetActiveWebContents())
1621     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1622 }
1623
1624 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1625   return GetJavaScriptDialogManagerInstance();
1626 }
1627
1628 content::ColorChooser* Browser::OpenColorChooser(
1629       WebContents* web_contents,
1630       SkColor initial_color,
1631       const std::vector<content::ColorSuggestion>& suggestions) {
1632   return chrome::ShowColorChooser(web_contents, initial_color);
1633 }
1634
1635 void Browser::RunFileChooser(WebContents* web_contents,
1636                              const content::FileChooserParams& params) {
1637   FileSelectHelper::RunFileChooser(web_contents, params);
1638 }
1639
1640 void Browser::EnumerateDirectory(WebContents* web_contents,
1641                                  int request_id,
1642                                  const base::FilePath& path) {
1643   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1644 }
1645
1646 bool Browser::EmbedsFullscreenWidget() const {
1647   return true;
1648 }
1649
1650 void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1651                                          bool enter_fullscreen) {
1652   fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1653                                                      enter_fullscreen);
1654 }
1655
1656 bool Browser::IsFullscreenForTabOrPending(
1657     const WebContents* web_contents) const {
1658   return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1659 }
1660
1661 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1662                                       const std::string& protocol,
1663                                       const GURL& url,
1664                                       bool user_gesture) {
1665   content::BrowserContext* context = web_contents->GetBrowserContext();
1666   if (context->IsOffTheRecord())
1667     return;
1668
1669   ProtocolHandler handler =
1670       ProtocolHandler::CreateProtocolHandler(protocol, url);
1671
1672   ProtocolHandlerRegistry* registry =
1673       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1674   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1675     return;
1676
1677   TabSpecificContentSettings* tab_content_settings =
1678       TabSpecificContentSettings::FromWebContents(web_contents);
1679   if (!user_gesture && window_) {
1680     tab_content_settings->set_pending_protocol_handler(handler);
1681     tab_content_settings->set_previous_protocol_handler(
1682         registry->GetHandlerFor(handler.protocol()));
1683     window_->GetLocationBar()->UpdateContentSettingsIcons();
1684     return;
1685   }
1686
1687   // Make sure content-setting icon is turned off in case the page does
1688   // ungestured and gestured RPH calls.
1689   if (window_) {
1690     tab_content_settings->ClearPendingProtocolHandler();
1691     window_->GetLocationBar()->UpdateContentSettingsIcons();
1692   }
1693
1694   PermissionBubbleManager* bubble_manager =
1695       PermissionBubbleManager::FromWebContents(web_contents);
1696   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1697     bubble_manager->AddRequest(
1698         new RegisterProtocolHandlerPermissionRequest(registry, handler,
1699                                                      url, user_gesture));
1700   } else {
1701     RegisterProtocolHandlerInfoBarDelegate::Create(
1702         InfoBarService::FromWebContents(web_contents), registry, handler);
1703   }
1704 }
1705
1706 void Browser::UnregisterProtocolHandler(WebContents* web_contents,
1707                                         const std::string& protocol,
1708                                         const GURL& url,
1709                                         bool user_gesture) {
1710   // user_gesture will be used in case we decide to have confirmation bubble
1711   // for user while un-registering the handler.
1712   content::BrowserContext* context = web_contents->GetBrowserContext();
1713   if (context->IsOffTheRecord())
1714     return;
1715
1716   ProtocolHandler handler =
1717       ProtocolHandler::CreateProtocolHandler(protocol, url);
1718
1719   ProtocolHandlerRegistry* registry =
1720       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1721   registry->RemoveHandler(handler);
1722 }
1723
1724 void Browser::UpdatePreferredSize(WebContents* source,
1725                                   const gfx::Size& pref_size) {
1726   window_->UpdatePreferredSize(source, pref_size);
1727 }
1728
1729 void Browser::ResizeDueToAutoResize(WebContents* source,
1730                                     const gfx::Size& new_size) {
1731   window_->ResizeDueToAutoResize(source, new_size);
1732 }
1733
1734 void Browser::FindReply(WebContents* web_contents,
1735                         int request_id,
1736                         int number_of_matches,
1737                         const gfx::Rect& selection_rect,
1738                         int active_match_ordinal,
1739                         bool final_update) {
1740   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1741   if (!find_tab_helper)
1742     return;
1743
1744   find_tab_helper->HandleFindReply(request_id,
1745                                    number_of_matches,
1746                                    selection_rect,
1747                                    active_match_ordinal,
1748                                    final_update);
1749 }
1750
1751 void Browser::RequestToLockMouse(WebContents* web_contents,
1752                                  bool user_gesture,
1753                                  bool last_unlocked_by_target) {
1754   fullscreen_controller_->RequestToLockMouse(web_contents,
1755                                              user_gesture,
1756                                              last_unlocked_by_target);
1757 }
1758
1759 void Browser::LostMouseLock() {
1760   fullscreen_controller_->LostMouseLock();
1761 }
1762
1763 void Browser::RequestMediaAccessPermission(
1764     content::WebContents* web_contents,
1765     const content::MediaStreamRequest& request,
1766     const content::MediaResponseCallback& callback) {
1767   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1768 }
1769
1770 bool Browser::CheckMediaAccessPermission(content::WebContents* web_contents,
1771                                          const GURL& security_origin,
1772                                          content::MediaStreamType type) {
1773   return ::CheckMediaAccessPermission(web_contents, security_origin, type);
1774 }
1775
1776 bool Browser::RequestPpapiBrokerPermission(
1777     WebContents* web_contents,
1778     const GURL& url,
1779     const base::FilePath& plugin_path,
1780     const base::Callback<void(bool)>& callback) {
1781   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1782   return true;
1783 }
1784
1785 gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
1786   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1787   // would disappear on non-NTP pages, resulting in a bigger size for the new
1788   // render view.
1789   gfx::Size size = web_contents->GetContainerBounds().size();
1790   // Don't change render view size if bookmark bar is currently not detached,
1791   // or there's no pending entry, or navigating to a NTP page.
1792   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1793     return size;
1794   const NavigationEntry* pending_entry =
1795       web_contents->GetController().GetPendingEntry();
1796   if (pending_entry &&
1797       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1798     size.Enlarge(
1799         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1800   }
1801   return size;
1802 }
1803
1804 ///////////////////////////////////////////////////////////////////////////////
1805 // Browser, CoreTabHelperDelegate implementation:
1806
1807 void Browser::SwapTabContents(content::WebContents* old_contents,
1808                               content::WebContents* new_contents,
1809                               bool did_start_load,
1810                               bool did_finish_load) {
1811   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1812   DCHECK_NE(TabStripModel::kNoTab, index);
1813   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1814 }
1815
1816 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1817   return chrome::CanReload(this);
1818 }
1819
1820 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1821   return chrome::CanSavePage(this);
1822 }
1823
1824 ///////////////////////////////////////////////////////////////////////////////
1825 // Browser, SearchEngineTabHelperDelegate implementation:
1826
1827 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1828                                        Profile* profile) {
1829   window()->ConfirmAddSearchProvider(template_url, profile);
1830 }
1831
1832 ///////////////////////////////////////////////////////////////////////////////
1833 // Browser, SearchTabHelperDelegate implementation:
1834
1835 void Browser::NavigateOnThumbnailClick(const GURL& url,
1836                                        WindowOpenDisposition disposition,
1837                                        content::WebContents* source_contents) {
1838   DCHECK(source_contents);
1839   // We're guaranteed that AUTO_BOOKMARK is the right transition since this only
1840   // gets called to handle clicks in the new tab page (to navigate to most
1841   // visited item URLs) and in the search results page (to navigate to
1842   // privileged destinations (e.g. chrome://URLs)).
1843   //
1844   // TODO(kmadhusu): Page transitions to privileged destinations should be
1845   // marked as "LINK" instead of "AUTO_BOOKMARK"?
1846   chrome::NavigateParams params(this, url,
1847                                 ui::PAGE_TRANSITION_AUTO_BOOKMARK);
1848   params.referrer = content::Referrer();
1849   params.source_contents = source_contents;
1850   params.disposition = disposition;
1851   params.is_renderer_initiated = false;
1852   params.initiating_profile = profile_;
1853   chrome::Navigate(&params);
1854 }
1855
1856 void Browser::OnWebContentsInstantSupportDisabled(
1857     const content::WebContents* web_contents) {
1858   DCHECK(web_contents);
1859   if (tab_strip_model_->GetActiveWebContents() == web_contents)
1860     UpdateToolbar(false);
1861 }
1862
1863 OmniboxView* Browser::GetOmniboxView() {
1864   return window_->GetLocationBar()->GetOmniboxView();
1865 }
1866
1867 std::set<std::string> Browser::GetOpenUrls() {
1868   history::TopSites* top_sites = profile_->GetTopSites();
1869   if (!top_sites)  // NULL for Incognito profiles.
1870     return std::set<std::string>();
1871
1872   std::set<std::string> open_urls;
1873   chrome::GetOpenUrls(*tab_strip_model_, *top_sites, &open_urls);
1874   return open_urls;
1875 }
1876
1877 ///////////////////////////////////////////////////////////////////////////////
1878 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1879
1880 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1881                                     bool blocked) {
1882   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1883   if (index == TabStripModel::kNoTab) {
1884     NOTREACHED();
1885     return;
1886   }
1887   tab_strip_model_->SetTabBlocked(index, blocked);
1888   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1889     web_contents->Focus();
1890 }
1891
1892 web_modal::WebContentsModalDialogHost*
1893 Browser::GetWebContentsModalDialogHost() {
1894   return window_->GetWebContentsModalDialogHost();
1895 }
1896
1897 ///////////////////////////////////////////////////////////////////////////////
1898 // Browser, BookmarkTabHelperDelegate implementation:
1899
1900 void Browser::URLStarredChanged(content::WebContents* web_contents,
1901                                 bool starred) {
1902   if (web_contents == tab_strip_model_->GetActiveWebContents())
1903     window_->SetStarredState(starred);
1904 }
1905
1906 ///////////////////////////////////////////////////////////////////////////////
1907 // Browser, ZoomObserver implementation:
1908
1909 void Browser::OnZoomChanged(const ZoomController::ZoomChangedEventData& data) {
1910   if (data.web_contents == tab_strip_model_->GetActiveWebContents()) {
1911     // Only show the zoom bubble for zoom changes in the active window.
1912     window_->ZoomChangedForActiveTab(data.can_show_bubble &&
1913                                      window_->IsActive());
1914     // Change the zoom commands state based on the zoom state
1915     command_controller_->ZoomStateChanged();
1916   }
1917 }
1918
1919 ///////////////////////////////////////////////////////////////////////////////
1920 // Browser, ui::SelectFileDialog::Listener implementation:
1921
1922 void Browser::FileSelected(const base::FilePath& path, int index,
1923                            void* params) {
1924   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1925 }
1926
1927 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1928                                         int index,
1929                                         void* params) {
1930   profile_->set_last_selected_directory(file_info.file_path.DirName());
1931
1932   GURL url = net::FilePathToFileURL(file_info.local_path);
1933
1934 #if defined(OS_CHROMEOS)
1935   const GURL external_url =
1936       chromeos::CreateExternalFileURLFromPath(profile_, file_info.file_path);
1937   if (!external_url.is_empty())
1938     url = external_url;
1939 #endif
1940
1941   if (url.is_empty())
1942     return;
1943
1944   OpenURL(OpenURLParams(
1945       url, Referrer(), CURRENT_TAB, ui::PAGE_TRANSITION_TYPED, false));
1946 }
1947
1948 ///////////////////////////////////////////////////////////////////////////////
1949 // Browser, content::NotificationObserver implementation:
1950
1951 void Browser::Observe(int type,
1952                       const content::NotificationSource& source,
1953                       const content::NotificationDetails& details) {
1954   switch (type) {
1955     case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1956       Profile* profile = content::Source<Profile>(source).ptr();
1957       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1958         window()->GetLocationBar()->InvalidatePageActions();
1959       break;
1960     }
1961
1962 #if defined(ENABLE_THEMES)
1963     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1964       window()->UserChangedTheme();
1965       break;
1966 #endif
1967
1968     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1969       WebContents* web_contents = content::Source<WebContents>(source).ptr();
1970       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1971         LocationBar* location_bar = window()->GetLocationBar();
1972         if (location_bar)
1973           location_bar->UpdateContentSettingsIcons();
1974       }
1975       break;
1976     }
1977
1978     default:
1979       NOTREACHED() << "Got a notification we didn't register for.";
1980   }
1981 }
1982
1983 #if defined(ENABLE_EXTENSIONS)
1984 ///////////////////////////////////////////////////////////////////////////////
1985 // Browser, extensions::ExtensionRegistryObserver implementation:
1986
1987 void Browser::OnExtensionUninstalled(content::BrowserContext* browser_context,
1988                                      const extensions::Extension* extension,
1989                                      extensions::UninstallReason reason) {
1990   // During window creation on Windows we may end up calling into
1991   // SHAppBarMessage, which internally spawns a nested message loop.This
1992   // makes it possible for us to end up here before window creation has
1993   // completed, at which point window_ is NULL. See 94752 for details.
1994
1995   if (window() && window()->GetLocationBar())
1996     window()->GetLocationBar()->UpdatePageActions();
1997 }
1998
1999 void Browser::OnExtensionLoaded(content::BrowserContext* browser_context,
2000                                 const extensions::Extension* extension) {
2001   chrome::UpdateCommandEnabled(
2002       this,
2003       IDC_BOOKMARK_PAGE,
2004       !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
2005   chrome::UpdateCommandEnabled(
2006       this,
2007       IDC_BOOKMARK_ALL_TABS,
2008       !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
2009 }
2010
2011 void Browser::OnExtensionUnloaded(
2012     content::BrowserContext* browser_context,
2013     const extensions::Extension* extension,
2014     extensions::UnloadedExtensionInfo::Reason reason) {
2015   chrome::UpdateCommandEnabled(
2016       this,
2017       IDC_BOOKMARK_PAGE,
2018       !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
2019   chrome::UpdateCommandEnabled(
2020       this,
2021       IDC_BOOKMARK_ALL_TABS,
2022       !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
2023   if (window()->GetLocationBar())
2024     window()->GetLocationBar()->UpdatePageActions();
2025
2026   // Close any tabs from the unloaded extension, unless it's terminated,
2027   // in which case let the sad tabs remain.
2028   if (reason != extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
2029     // Iterate backwards as we may remove items while iterating.
2030     for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
2031       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2032       // Two cases are handled here:
2033
2034       // - The scheme check is for when an extension page is loaded in a
2035       // tab, e.g. chrome-extension://id/page.html.
2036       // - The extension_app check is for apps, which can have non-extension
2037       // schemes, e.g. https://mail.google.com if you have the Gmail app
2038       // installed.
2039       if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
2040            web_contents->GetURL().host() == extension->id()) ||
2041           (extensions::TabHelper::FromWebContents(web_contents)
2042                ->extension_app() == extension)) {
2043         tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
2044       }
2045     }
2046   }
2047 }
2048 #endif  // defined(ENABLE_EXTENSIONS)
2049
2050 ///////////////////////////////////////////////////////////////////////////////
2051 // Browser, Command and state updating (private):
2052
2053 void Browser::OnDevToolsDisabledChanged() {
2054   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
2055     content::DevToolsAgentHost::DetachAllClients();
2056 }
2057
2058 ///////////////////////////////////////////////////////////////////////////////
2059 // Browser, UI update coalescing and handling (private):
2060
2061 void Browser::UpdateToolbar(bool should_restore_state) {
2062   window_->UpdateToolbar(should_restore_state ?
2063       tab_strip_model_->GetActiveWebContents() : NULL);
2064 }
2065
2066 void Browser::ScheduleUIUpdate(const WebContents* source,
2067                                unsigned changed_flags) {
2068   DCHECK(source);
2069   int index = tab_strip_model_->GetIndexOfWebContents(source);
2070   DCHECK_NE(TabStripModel::kNoTab, index);
2071
2072   // Do some synchronous updates.
2073   if (changed_flags & content::INVALIDATE_TYPE_URL &&
2074       source == tab_strip_model_->GetActiveWebContents()) {
2075     // Only update the URL for the current tab. Note that we do not update
2076     // the navigation commands since those would have already been updated
2077     // synchronously by NavigationStateChanged.
2078     UpdateToolbar(false);
2079     changed_flags &= ~content::INVALIDATE_TYPE_URL;
2080   }
2081   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
2082     // Update the loading state synchronously. This is so the throbber will
2083     // immediately start/stop, which gives a more snappy feel. We want to do
2084     // this for any tab so they start & stop quickly.
2085     tab_strip_model_->UpdateWebContentsStateAt(
2086         tab_strip_model_->GetIndexOfWebContents(source),
2087         TabStripModelObserver::LOADING_ONLY);
2088     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
2089     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
2090     // changed_flags.
2091   }
2092
2093   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
2094     // To correctly calculate whether the title changed while not loading
2095     // we need to process the update synchronously. This state only matters for
2096     // the TabStripModel, so we notify the TabStripModel now and notify others
2097     // asynchronously.
2098     tab_strip_model_->UpdateWebContentsStateAt(
2099         tab_strip_model_->GetIndexOfWebContents(source),
2100         TabStripModelObserver::TITLE_NOT_LOADING);
2101   }
2102
2103   // If the only updates were synchronously handled above, we're done.
2104   if (changed_flags == 0)
2105     return;
2106
2107   // Save the dirty bits.
2108   scheduled_updates_[source] |= changed_flags;
2109
2110   if (!chrome_updater_factory_.HasWeakPtrs()) {
2111     // No task currently scheduled, start another.
2112     base::MessageLoop::current()->PostDelayedTask(
2113         FROM_HERE,
2114         base::Bind(&Browser::ProcessPendingUIUpdates,
2115                    chrome_updater_factory_.GetWeakPtr()),
2116         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
2117   }
2118 }
2119
2120 void Browser::ProcessPendingUIUpdates() {
2121 #ifndef NDEBUG
2122   // Validate that all tabs we have pending updates for exist. This is scary
2123   // because the pending list must be kept in sync with any detached or
2124   // deleted tabs.
2125   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2126        i != scheduled_updates_.end(); ++i) {
2127     bool found = false;
2128     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
2129       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
2130         found = true;
2131         break;
2132       }
2133     }
2134     DCHECK(found);
2135   }
2136 #endif
2137
2138   chrome_updater_factory_.InvalidateWeakPtrs();
2139
2140   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2141        i != scheduled_updates_.end(); ++i) {
2142     // Do not dereference |contents|, it may be out-of-date!
2143     const WebContents* contents = i->first;
2144     unsigned flags = i->second;
2145
2146     if (contents == tab_strip_model_->GetActiveWebContents()) {
2147       // Updates that only matter when the tab is selected go here.
2148
2149       // Updating the URL happens synchronously in ScheduleUIUpdate.
2150       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2151         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2152             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2153       }
2154
2155       if (flags & (content::INVALIDATE_TYPE_TAB |
2156                    content::INVALIDATE_TYPE_TITLE)) {
2157         window_->UpdateTitleBar();
2158       }
2159     }
2160
2161     // Updates that don't depend upon the selected state go here.
2162     if (flags &
2163         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2164       tab_strip_model_->UpdateWebContentsStateAt(
2165           tab_strip_model_->GetIndexOfWebContents(contents),
2166           TabStripModelObserver::ALL);
2167     }
2168
2169     // Update the bookmark bar. It may happen that the tab is crashed, and if
2170     // so, the bookmark bar should be hidden.
2171     if (flags & content::INVALIDATE_TYPE_TAB)
2172       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2173
2174     // We don't need to process INVALIDATE_STATE, since that's not visible.
2175   }
2176
2177   scheduled_updates_.clear();
2178 }
2179
2180 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2181   if (!contents)
2182     return;
2183
2184   UpdateMap::iterator i = scheduled_updates_.find(contents);
2185   if (i != scheduled_updates_.end())
2186     scheduled_updates_.erase(i);
2187 }
2188
2189 ///////////////////////////////////////////////////////////////////////////////
2190 // Browser, Getters for UI (private):
2191
2192 StatusBubble* Browser::GetStatusBubble() {
2193   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2194   if (chrome::IsRunningInAppMode())
2195     return NULL;
2196
2197   return window_ ? window_->GetStatusBubble() : NULL;
2198 }
2199
2200 ///////////////////////////////////////////////////////////////////////////////
2201 // Browser, Session restore functions (private):
2202
2203 void Browser::SyncHistoryWithTabs(int index) {
2204   SessionService* session_service =
2205       SessionServiceFactory::GetForProfileIfExisting(profile());
2206   if (session_service) {
2207     for (int i = index; i < tab_strip_model_->count(); ++i) {
2208       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2209       if (web_contents) {
2210         SessionTabHelper* session_tab_helper =
2211             SessionTabHelper::FromWebContents(web_contents);
2212         session_service->SetTabIndexInWindow(
2213             session_id(), session_tab_helper->session_id(), i);
2214         session_service->SetPinnedState(
2215             session_id(),
2216             session_tab_helper->session_id(),
2217             tab_strip_model_->IsTabPinned(i));
2218       }
2219     }
2220   }
2221 }
2222
2223 ///////////////////////////////////////////////////////////////////////////////
2224 // Browser, In-progress download termination handling (private):
2225
2226 bool Browser::CanCloseWithInProgressDownloads() {
2227   // If we've prompted, we need to hear from the user before we
2228   // can close.
2229   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2230     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2231
2232   int num_downloads_blocking;
2233   Browser::DownloadClosePreventionType dialog_type =
2234       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2235   if (dialog_type == DOWNLOAD_CLOSE_OK)
2236     return true;
2237
2238   // Closing this window will kill some downloads; prompt to make sure
2239   // that's ok.
2240   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2241   window_->ConfirmBrowserCloseWithPendingDownloads(
2242       num_downloads_blocking,
2243       dialog_type,
2244       false,
2245       base::Bind(&Browser::InProgressDownloadResponse,
2246                  weak_factory_.GetWeakPtr()));
2247
2248   // Return false so the browser does not close.  We'll close if the user
2249   // confirms in the dialog.
2250   return false;
2251 }
2252
2253 ///////////////////////////////////////////////////////////////////////////////
2254 // Browser, Assorted utility functions (private):
2255
2256 void Browser::SetAsDelegate(WebContents* web_contents, bool set_delegate) {
2257   Browser* delegate = set_delegate ? this : NULL;
2258   // WebContents...
2259   web_contents->SetDelegate(delegate);
2260
2261   // ...and all the helpers.
2262   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2263   WebContentsModalDialogManager::FromWebContents(web_contents)->
2264       SetDelegate(delegate);
2265   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2266   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2267   SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2268   translate::ContentTranslateDriver& content_translate_driver =
2269       ChromeTranslateClient::FromWebContents(web_contents)->translate_driver();
2270   if (delegate) {
2271     ZoomController::FromWebContents(web_contents)->AddObserver(this);
2272     content_translate_driver.AddObserver(translate_driver_observer_.get());
2273   } else {
2274     ZoomController::FromWebContents(web_contents)->RemoveObserver(this);
2275     content_translate_driver.RemoveObserver(translate_driver_observer_.get());
2276   }
2277 }
2278
2279 void Browser::CloseFrame() {
2280   window_->Close();
2281 }
2282
2283 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2284                                 int index,
2285                                 DetachType type) {
2286   if (type == DETACH_TYPE_DETACH) {
2287     // Save the current location bar state, but only if the tab being detached
2288     // is the selected tab.  Because saving state can conditionally revert the
2289     // location bar, saving the current tab's location bar state to a
2290     // non-selected tab can corrupt both tabs.
2291     if (contents == tab_strip_model_->GetActiveWebContents()) {
2292       LocationBar* location_bar = window()->GetLocationBar();
2293       if (location_bar)
2294         location_bar->SaveStateToContents(contents);
2295     }
2296
2297     if (!tab_strip_model_->closing_all())
2298       SyncHistoryWithTabs(0);
2299   }
2300
2301   SetAsDelegate(contents, false);
2302   RemoveScheduledUpdatesFor(contents);
2303
2304   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2305     find_bar_controller_->ChangeWebContents(NULL);
2306   }
2307
2308   // Stop observing search model changes for this tab.
2309   search_delegate_->OnTabDetached(contents);
2310
2311   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2312     if (interstitial_observers_[i]->web_contents() != contents)
2313       continue;
2314
2315     delete interstitial_observers_[i];
2316     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2317     return;
2318   }
2319 }
2320
2321 bool Browser::ShouldShowLocationBar() const {
2322   // Tabbed browser always show a location bar.
2323   if (is_type_tabbed())
2324     return true;
2325
2326   if (is_app()) {
2327     if (extensions::util::IsStreamlinedHostedAppsEnabled() &&
2328         host_desktop_type() != chrome::HOST_DESKTOP_TYPE_ASH) {
2329       // If streamlined hosted apps are enabled, show the location bar for
2330       // bookmark apps, except on ash which has the toolbar merged into the
2331       // frame.
2332       ExtensionService* service =
2333           extensions::ExtensionSystem::Get(profile_)->extension_service();
2334       const extensions::Extension* extension =
2335           service ? service->GetInstalledExtension(
2336                         web_app::GetExtensionIdFromApplicationName(app_name()))
2337                   : NULL;
2338       return (!extension || extension->from_bookmark()) &&
2339              app_name() != DevToolsWindow::kDevToolsApp;
2340     } else {
2341       return false;
2342     }
2343   }
2344
2345   // Trusted app windows and system windows never show a location bar.
2346   return !is_trusted_source();
2347 }
2348
2349 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2350                                         bool check_fullscreen) const {
2351   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2352
2353   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2354
2355   if (is_type_tabbed())
2356     features |= FEATURE_BOOKMARKBAR;
2357
2358   if (!hide_ui_for_fullscreen) {
2359     if (!is_type_tabbed())
2360       features |= FEATURE_TITLEBAR;
2361
2362     if (is_type_tabbed())
2363       features |= FEATURE_TABSTRIP;
2364
2365     if (is_type_tabbed())
2366       features |= FEATURE_TOOLBAR;
2367
2368     if (ShouldShowLocationBar())
2369       features |= FEATURE_LOCATIONBAR;
2370   }
2371   return !!(features & feature);
2372 }
2373
2374 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2375   BookmarkBar::State state;
2376   // The bookmark bar is always hidden for Guest Sessions and in fullscreen
2377   // mode, unless on the new tab page.
2378   if (profile_->IsGuestSession()) {
2379     state = BookmarkBar::HIDDEN;
2380   } else if (browser_defaults::bookmarks_enabled &&
2381       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar) &&
2382       !ShouldHideUIForFullscreen()) {
2383     state = BookmarkBar::SHOW;
2384   } else {
2385     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2386     BookmarkTabHelper* bookmark_tab_helper =
2387         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2388     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2389       state = BookmarkBar::DETACHED;
2390     else
2391       state = BookmarkBar::HIDDEN;
2392   }
2393
2394   if (state == bookmark_bar_state_)
2395     return;
2396
2397   bookmark_bar_state_ = state;
2398
2399   if (!window_)
2400     return;  // This is called from the constructor when window_ is NULL.
2401
2402   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2403     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2404     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2405     // end up querying state once they process the tab switch.
2406     return;
2407   }
2408
2409   bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2410   window_->BookmarkBarStateChanged(shouldAnimate ?
2411       BookmarkBar::ANIMATE_STATE_CHANGE :
2412       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2413 }
2414
2415 bool Browser::ShouldHideUIForFullscreen() const {
2416   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2417   // keep the controls in a slide-down panel.
2418   return window_ && window_->ShouldHideUIForFullscreen();
2419 }
2420
2421 bool Browser::MaybeCreateBackgroundContents(
2422     int route_id,
2423     WebContents* opener_web_contents,
2424     const base::string16& frame_name,
2425     const GURL& target_url,
2426     const std::string& partition_id,
2427     content::SessionStorageNamespace* session_storage_namespace) {
2428   GURL opener_url = opener_web_contents->GetURL();
2429   ExtensionService* extensions_service =
2430       extensions::ExtensionSystem::Get(profile_)->extension_service();
2431
2432   if (!opener_url.is_valid() ||
2433       frame_name.empty() ||
2434       !extensions_service ||
2435       !extensions_service->is_ready())
2436     return false;
2437
2438   // Only hosted apps have web extents, so this ensures that only hosted apps
2439   // can create BackgroundContents. We don't have to check for background
2440   // permission as that is checked in RenderMessageFilter when the CreateWindow
2441   // message is processed.
2442   const Extension* extension =
2443       extensions_service->extensions()->GetHostedAppByURL(opener_url);
2444   if (!extension)
2445     return false;
2446
2447   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2448   BackgroundContentsService* service =
2449       BackgroundContentsServiceFactory::GetForProfile(profile_);
2450   if (!service)
2451     return false;
2452
2453   // Ensure that we're trying to open this from the extension's process.
2454   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2455   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2456   if (!opener_site_instance->GetProcess() ||
2457       !process_map->Contains(
2458           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2459     return false;
2460   }
2461
2462   // Only allow a single background contents per app.
2463   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2464   BackgroundContents* existing =
2465       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2466   if (existing) {
2467     // For non-scriptable background contents, ignore the request altogether,
2468     // (returning true, so that a regular WebContents isn't created either).
2469     if (!allow_js_access)
2470       return true;
2471     // For scriptable background pages, if one already exists, close it (even
2472     // if it was specified in the manifest).
2473     delete existing;
2474   }
2475
2476   // If script access is not allowed, create the the background contents in a
2477   // new SiteInstance, so that a separate process is used.
2478   scoped_refptr<content::SiteInstance> site_instance =
2479       allow_js_access ?
2480       opener_site_instance :
2481       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2482
2483   // Passed all the checks, so this should be created as a BackgroundContents.
2484   BackgroundContents* contents =
2485       service->CreateBackgroundContents(site_instance.get(),
2486                                         route_id,
2487                                         profile_,
2488                                         frame_name,
2489                                         base::ASCIIToUTF16(extension->id()),
2490                                         partition_id,
2491                                         session_storage_namespace);
2492
2493   // When a separate process is used, the original renderer cannot access the
2494   // new window later, thus we need to navigate the window now.
2495   if (contents && !allow_js_access) {
2496     contents->web_contents()->GetController().LoadURL(
2497         target_url,
2498         content::Referrer(),
2499         ui::PAGE_TRANSITION_LINK,
2500         std::string());  // No extra headers.
2501   }
2502
2503   return contents != NULL;
2504 }