chrome/browser/ui/browser_commands.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_commands.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/metrics/histogram.h"
   9 #include "base/prefs/pref_service.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "chrome/app/chrome_command_ids.h"
  12 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
  13 #include "chrome/browser/browser_process.h"
  14 #include "chrome/browser/browsing_data/browsing_data_helper.h"
  15 #include "chrome/browser/browsing_data/browsing_data_remover.h"
  16 #include "chrome/browser/chrome_notification_types.h"
  17 #include "chrome/browser/devtools/devtools_window.h"
  18 #include "chrome/browser/dom_distiller/tab_utils.h"
  19 #include "chrome/browser/lifetime/application_lifetime.h"
  20 #include "chrome/browser/platform_util.h"
  21 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  22 #include "chrome/browser/profiles/profile.h"
  23 #include "chrome/browser/rlz/rlz.h"
  24 #include "chrome/browser/search/search.h"
  25 #include "chrome/browser/sessions/session_service_factory.h"
  26 #include "chrome/browser/sessions/tab_restore_service.h"
  27 #include "chrome/browser/sessions/tab_restore_service_delegate.h"
  28 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  29 #include "chrome/browser/signin/signin_header_helper.h"
  30 #include "chrome/browser/translate/chrome_translate_client.h"
  31 #include "chrome/browser/ui/accelerator_utils.h"
  32 #include "chrome/browser/ui/bookmarks/bookmark_utils.h"
  33 #include "chrome/browser/ui/browser.h"
  34 #include "chrome/browser/ui/browser_command_controller.h"
  35 #include "chrome/browser/ui/browser_dialogs.h"
  36 #include "chrome/browser/ui/browser_instant_controller.h"
  37 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
  38 #include "chrome/browser/ui/browser_tabstrip.h"
  39 #include "chrome/browser/ui/browser_window.h"
  40 #include "chrome/browser/ui/chrome_pages.h"
  41 #include "chrome/browser/ui/exclusive_access/fullscreen_controller.h"
  42 #include "chrome/browser/ui/find_bar/find_bar.h"
  43 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
  44 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
  45 #include "chrome/browser/ui/location_bar/location_bar.h"
  46 #include "chrome/browser/ui/passwords/manage_passwords_ui_controller.h"
  47 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
  48 #include "chrome/browser/ui/search/search_tab_helper.h"
  49 #include "chrome/browser/ui/status_bubble.h"
  50 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
  51 #include "chrome/browser/ui/tab_dialogs.h"
  52 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  53 #include "chrome/browser/upgrade_detector.h"
  54 #include "chrome/common/chrome_switches.h"
  55 #include "chrome/common/chrome_version_info.h"
  56 #include "chrome/common/content_restriction.h"
  57 #include "chrome/common/pref_names.h"
  58 #include "components/bookmarks/browser/bookmark_model.h"
  59 #include "components/bookmarks/browser/bookmark_utils.h"
  60 #include "components/favicon/content/content_favicon_driver.h"
  61 #include "components/google/core/browser/google_util.h"
  62 #include "components/translate/core/browser/language_state.h"
  63 #include "components/ui/zoom/page_zoom.h"
  64 #include "components/ui/zoom/zoom_controller.h"
  65 #include "components/web_modal/popup_manager.h"
  66 #include "content/public/browser/devtools_agent_host.h"
  67 #include "content/public/browser/navigation_controller.h"
  68 #include "content/public/browser/navigation_entry.h"
  69 #include "content/public/browser/notification_service.h"
  70 #include "content/public/browser/page_navigator.h"
  71 #include "content/public/browser/render_view_host.h"
  72 #include "content/public/browser/render_widget_host_view.h"
  73 #include "content/public/browser/user_metrics.h"
  74 #include "content/public/browser/web_contents.h"
  75 #include "content/public/common/page_state.h"
  76 #include "content/public/common/renderer_preferences.h"
  77 #include "content/public/common/url_constants.h"
  78 #include "content/public/common/url_utils.h"
  79 #include "content/public/common/user_agent.h"
  80 #include "net/base/escape.h"
  81 #include "ui/events/keycodes/keyboard_codes.h"
  82
  83 #if defined(OS_WIN)
  84 #include "chrome/browser/ui/metro_pin_tab_helper_win.h"
  85 #endif
  86
  87 #if defined(ENABLE_EXTENSIONS)
  88 #include "chrome/browser/extensions/api/commands/command_service.h"
  89 #include "chrome/browser/extensions/api/extension_action/extension_action_api.h"
  90 #include "chrome/browser/extensions/tab_helper.h"
  91 #include "chrome/browser/web_applications/web_app.h"
  92 #include "chrome/common/extensions/extension_metrics.h"
  93 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
  94 #include "extensions/browser/extension_registry.h"
  95 #include "extensions/browser/extension_system.h"
  96 #include "extensions/common/extension.h"
  97 #include "extensions/common/extension_set.h"
  98 #endif
  99
 100 #if defined(ENABLE_PRINTING)
 101 #include "chrome/browser/printing/print_view_manager_common.h"
 102 #if defined(ENABLE_PRINT_PREVIEW)
 103 #include "chrome/browser/printing/print_preview_dialog_controller.h"
 104 #endif  // defined(ENABLE_PRINT_PREVIEW)
 105 #endif  // defined(ENABLE_PRINTING)
 106
 107 namespace {
 108 const char kOsOverrideForTabletSite[] = "Linux; Android 4.0.3";
 109 }
 110
 111 using base::UserMetricsAction;
 112 using bookmarks::BookmarkModel;
 113 using content::NavigationController;
 114 using content::NavigationEntry;
 115 using content::OpenURLParams;
 116 using content::Referrer;
 117 using content::SSLStatus;
 118 using content::WebContents;
 119
 120 namespace chrome {
 121 namespace {
 122
 123 bool CanBookmarkCurrentPageInternal(const Browser* browser,
 124                                     bool check_remove_bookmark_ui) {
 125   BookmarkModel* model =
 126       BookmarkModelFactory::GetForProfile(browser->profile());
 127   return browser_defaults::bookmarks_enabled &&
 128       browser->profile()->GetPrefs()->GetBoolean(
 129           bookmarks::prefs::kEditBookmarksEnabled) &&
 130       model && model->loaded() && browser->is_type_tabbed() &&
 131       (!check_remove_bookmark_ui ||
 132            !chrome::ShouldRemoveBookmarkThisPageUI(browser->profile()));
 133 }
 134
 135 #if defined(ENABLE_EXTENSIONS)
 136 bool GetBookmarkOverrideCommand(
 137     Profile* profile,
 138     const extensions::Extension** extension,
 139     extensions::Command* command,
 140     extensions::CommandService::ExtensionCommandType* command_type) {
 141   DCHECK(extension);
 142   DCHECK(command);
 143   DCHECK(command_type);
 144
 145   ui::Accelerator bookmark_page_accelerator =
 146       chrome::GetPrimaryChromeAcceleratorForCommandId(IDC_BOOKMARK_PAGE);
 147   if (bookmark_page_accelerator.key_code() == ui::VKEY_UNKNOWN)
 148     return false;
 149
 150   extensions::CommandService* command_service =
 151       extensions::CommandService::Get(profile);
 152   const extensions::ExtensionSet& extension_set =
 153       extensions::ExtensionRegistry::Get(profile)->enabled_extensions();
 154   for (extensions::ExtensionSet::const_iterator i = extension_set.begin();
 155        i != extension_set.end();
 156        ++i) {
 157     extensions::Command prospective_command;
 158     extensions::CommandService::ExtensionCommandType prospective_command_type;
 159     if (command_service->GetSuggestedExtensionCommand(
 160             (*i)->id(), bookmark_page_accelerator, &prospective_command,
 161             &prospective_command_type)) {
 162       *extension = i->get();
 163       *command = prospective_command;
 164       *command_type = prospective_command_type;
 165       return true;
 166     }
 167   }
 168   return false;
 169 }
 170 #endif
 171
 172 // Based on |disposition|, creates a new tab as necessary, and returns the
 173 // appropriate tab to navigate.  If that tab is the current tab, reverts the
 174 // location bar contents, since all browser-UI-triggered navigations should
 175 // revert any omnibox edits in the current tab.
 176 WebContents* GetTabAndRevertIfNecessary(Browser* browser,
 177                                         WindowOpenDisposition disposition) {
 178   WebContents* current_tab = browser->tab_strip_model()->GetActiveWebContents();
 179   switch (disposition) {
 180     case NEW_FOREGROUND_TAB:
 181     case NEW_BACKGROUND_TAB: {
 182       WebContents* new_tab = current_tab->Clone();
 183       browser->tab_strip_model()->AddWebContents(
 184           new_tab, -1, ui::PAGE_TRANSITION_LINK,
 185           (disposition == NEW_FOREGROUND_TAB) ?
 186               TabStripModel::ADD_ACTIVE : TabStripModel::ADD_NONE);
 187       return new_tab;
 188     }
 189     case NEW_WINDOW: {
 190       WebContents* new_tab = current_tab->Clone();
 191       Browser* new_browser = new Browser(Browser::CreateParams(
 192           browser->profile(), browser->host_desktop_type()));
 193       new_browser->tab_strip_model()->AddWebContents(
 194           new_tab, -1, ui::PAGE_TRANSITION_LINK,
 195           TabStripModel::ADD_ACTIVE);
 196       new_browser->window()->Show();
 197       return new_tab;
 198     }
 199     default:
 200       browser->window()->GetLocationBar()->Revert();
 201       return current_tab;
 202   }
 203 }
 204
 205 void ReloadInternal(Browser* browser,
 206                     WindowOpenDisposition disposition,
 207                     bool ignore_cache) {
 208   // As this is caused by a user action, give the focus to the page.
 209   //
 210   // Also notify RenderViewHostDelegate of the user gesture; this is
 211   // normally done in Browser::Navigate, but a reload bypasses Navigate.
 212   WebContents* new_tab = GetTabAndRevertIfNecessary(browser, disposition);
 213   new_tab->UserGestureDone();
 214   if (!new_tab->FocusLocationBarByDefault())
 215     new_tab->Focus();
 216   if (ignore_cache)
 217     new_tab->GetController().ReloadIgnoringCache(true);
 218   else
 219     new_tab->GetController().Reload(true);
 220 }
 221
 222 bool IsShowingWebContentsModalDialog(Browser* browser) {
 223   WebContents* web_contents =
 224       browser->tab_strip_model()->GetActiveWebContents();
 225   if (!web_contents)
 226     return false;
 227
 228   // In test code we may not have a popup manager.
 229   if (!browser->popup_manager())
 230     return false;
 231
 232   // TODO(gbillock): This is currently called in production by the CanPrint
 233   // method, and may be too restrictive if we allow print preview to overlap.
 234   // Re-assess how to queue print preview after we know more about popup
 235   // management policy.
 236   return browser->popup_manager()->IsWebModalDialogActive(web_contents);
 237 }
 238
 239 #if defined(ENABLE_BASIC_PRINTING)
 240 bool PrintPreviewShowing(const Browser* browser) {
 241 #if defined(ENABLE_PRINT_PREVIEW)
 242   WebContents* contents = browser->tab_strip_model()->GetActiveWebContents();
 243   printing::PrintPreviewDialogController* controller =
 244       printing::PrintPreviewDialogController::GetInstance();
 245   return controller && (controller->GetPrintPreviewForContents(contents) ||
 246                         controller->is_creating_print_preview_dialog());
 247 #else
 248   return false;
 249 #endif
 250 }
 251 #endif  // ENABLE_BASIC_PRINTING
 252
 253 }  // namespace
 254
 255 bool IsCommandEnabled(Browser* browser, int command) {
 256   return browser->command_controller()->command_updater()->IsCommandEnabled(
 257       command);
 258 }
 259
 260 bool SupportsCommand(Browser* browser, int command) {
 261   return browser->command_controller()->command_updater()->SupportsCommand(
 262       command);
 263 }
 264
 265 bool ExecuteCommand(Browser* browser, int command) {
 266   return browser->command_controller()->command_updater()->ExecuteCommand(
 267       command);
 268 }
 269
 270 bool ExecuteCommandWithDisposition(Browser* browser,
 271                                    int command,
 272                                    WindowOpenDisposition disposition) {
 273   return browser->command_controller()->command_updater()->
 274       ExecuteCommandWithDisposition(command, disposition);
 275 }
 276
 277 void UpdateCommandEnabled(Browser* browser, int command, bool enabled) {
 278   browser->command_controller()->command_updater()->UpdateCommandEnabled(
 279       command, enabled);
 280 }
 281
 282 void AddCommandObserver(Browser* browser,
 283                         int command,
 284                         CommandObserver* observer) {
 285   browser->command_controller()->command_updater()->AddCommandObserver(
 286       command, observer);
 287 }
 288
 289 void RemoveCommandObserver(Browser* browser,
 290                            int command,
 291                            CommandObserver* observer) {
 292   browser->command_controller()->command_updater()->RemoveCommandObserver(
 293       command, observer);
 294 }
 295
 296 int GetContentRestrictions(const Browser* browser) {
 297   int content_restrictions = 0;
 298   WebContents* current_tab = browser->tab_strip_model()->GetActiveWebContents();
 299   if (current_tab) {
 300     CoreTabHelper* core_tab_helper =
 301         CoreTabHelper::FromWebContents(current_tab);
 302     content_restrictions = core_tab_helper->content_restrictions();
 303     NavigationEntry* last_committed_entry =
 304         current_tab->GetController().GetLastCommittedEntry();
 305     if (!content::IsSavableURL(
 306             last_committed_entry ? last_committed_entry->GetURL() : GURL()) ||
 307         current_tab->ShowingInterstitialPage())
 308       content_restrictions |= CONTENT_RESTRICTION_SAVE;
 309     if (current_tab->ShowingInterstitialPage())
 310       content_restrictions |= CONTENT_RESTRICTION_PRINT;
 311   }
 312   return content_restrictions;
 313 }
 314
 315 void NewEmptyWindow(Profile* profile, HostDesktopType desktop_type) {
 316   bool incognito = profile->IsOffTheRecord();
 317   PrefService* prefs = profile->GetPrefs();
 318   if (incognito) {
 319     if (IncognitoModePrefs::GetAvailability(prefs) ==
 320           IncognitoModePrefs::DISABLED) {
 321       incognito = false;
 322     }
 323   } else if (profile->IsGuestSession() ||
 324              (browser_defaults::kAlwaysOpenIncognitoWindow &&
 325               IncognitoModePrefs::ShouldLaunchIncognito(
 326                   *base::CommandLine::ForCurrentProcess(), prefs))) {
 327     incognito = true;
 328   }
 329
 330   if (incognito) {
 331     content::RecordAction(UserMetricsAction("NewIncognitoWindow"));
 332     OpenEmptyWindow(profile->GetOffTheRecordProfile(), desktop_type);
 333   } else {
 334     content::RecordAction(UserMetricsAction("NewWindow"));
 335     SessionService* session_service =
 336         SessionServiceFactory::GetForProfileForSessionRestore(
 337             profile->GetOriginalProfile());
 338     if (!session_service ||
 339         !session_service->RestoreIfNecessary(std::vector<GURL>())) {
 340       OpenEmptyWindow(profile->GetOriginalProfile(), desktop_type);
 341     }
 342   }
 343 }
 344
 345 Browser* OpenEmptyWindow(Profile* profile, HostDesktopType desktop_type) {
 346   Browser* browser = new Browser(
 347       Browser::CreateParams(Browser::TYPE_TABBED, profile, desktop_type));
 348   AddTabAt(browser, GURL(), -1, true);
 349   browser->window()->Show();
 350   return browser;
 351 }
 352
 353 void OpenWindowWithRestoredTabs(Profile* profile,
 354                                 HostDesktopType host_desktop_type) {
 355   TabRestoreService* service = TabRestoreServiceFactory::GetForProfile(profile);
 356   if (service)
 357     service->RestoreMostRecentEntry(NULL, host_desktop_type);
 358 }
 359
 360 void OpenURLOffTheRecord(Profile* profile,
 361                          const GURL& url,
 362                          chrome::HostDesktopType desktop_type) {
 363   ScopedTabbedBrowserDisplayer displayer(profile->GetOffTheRecordProfile(),
 364                                          desktop_type);
 365   AddSelectedTabWithURL(displayer.browser(), url,
 366       ui::PAGE_TRANSITION_LINK);
 367 }
 368
 369 bool CanGoBack(const Browser* browser) {
 370   return browser->tab_strip_model()->GetActiveWebContents()->
 371       GetController().CanGoBack();
 372 }
 373
 374 void GoBack(Browser* browser, WindowOpenDisposition disposition) {
 375   content::RecordAction(UserMetricsAction("Back"));
 376
 377   if (CanGoBack(browser)) {
 378     WebContents* current_tab =
 379         browser->tab_strip_model()->GetActiveWebContents();
 380     WebContents* new_tab = GetTabAndRevertIfNecessary(browser, disposition);
 381     // If we are on an interstitial page and clone the tab, it won't be copied
 382     // to the new tab, so we don't need to go back.
 383     if ((new_tab == current_tab) || !current_tab->ShowingInterstitialPage())
 384       new_tab->GetController().GoBack();
 385   }
 386 }
 387
 388 bool CanGoForward(const Browser* browser) {
 389   return browser->tab_strip_model()->GetActiveWebContents()->
 390       GetController().CanGoForward();
 391 }
 392
 393 void GoForward(Browser* browser, WindowOpenDisposition disposition) {
 394   content::RecordAction(UserMetricsAction("Forward"));
 395   if (CanGoForward(browser)) {
 396     GetTabAndRevertIfNecessary(browser, disposition)->
 397         GetController().GoForward();
 398   }
 399 }
 400
 401 bool NavigateToIndexWithDisposition(Browser* browser,
 402                                     int index,
 403                                     WindowOpenDisposition disposition) {
 404   NavigationController* controller =
 405       &GetTabAndRevertIfNecessary(browser, disposition)->GetController();
 406   if (index < 0 || index >= controller->GetEntryCount())
 407     return false;
 408   controller->GoToIndex(index);
 409   return true;
 410 }
 411
 412 void Reload(Browser* browser, WindowOpenDisposition disposition) {
 413   content::RecordAction(UserMetricsAction("Reload"));
 414   ReloadInternal(browser, disposition, false);
 415 }
 416
 417 void ReloadIgnoringCache(Browser* browser, WindowOpenDisposition disposition) {
 418   content::RecordAction(UserMetricsAction("ReloadIgnoringCache"));
 419   ReloadInternal(browser, disposition, true);
 420 }
 421
 422 bool CanReload(const Browser* browser) {
 423   return !browser->is_devtools();
 424 }
 425
 426 void Home(Browser* browser, WindowOpenDisposition disposition) {
 427   content::RecordAction(UserMetricsAction("Home"));
 428
 429   std::string extra_headers;
 430 #if defined(ENABLE_RLZ) && !defined(OS_IOS)
 431   // If the home page is a Google home page, add the RLZ header to the request.
 432   PrefService* pref_service = browser->profile()->GetPrefs();
 433   if (pref_service) {
 434     if (google_util::IsGoogleHomePageUrl(
 435         GURL(pref_service->GetString(prefs::kHomePage)))) {
 436       extra_headers = RLZTracker::GetAccessPointHttpHeader(
 437           RLZTracker::ChromeHomePage());
 438     }
 439   }
 440 #endif  // defined(ENABLE_RLZ) && !defined(OS_IOS)
 441
 442   GURL url = browser->profile()->GetHomePage();
 443
 444 #if defined(ENABLE_EXTENSIONS)
 445   // With bookmark apps enabled, hosted apps should return to their launch page
 446   // when the home button is pressed.
 447   if (browser->is_app()) {
 448     const extensions::Extension* extension =
 449         extensions::ExtensionRegistry::Get(browser->profile())
 450             ->GetExtensionById(
 451                 web_app::GetExtensionIdFromApplicationName(browser->app_name()),
 452                 extensions::ExtensionRegistry::EVERYTHING);
 453     if (!extension)
 454       return;
 455
 456     url = extensions::AppLaunchInfo::GetLaunchWebURL(extension);
 457   }
 458 #endif
 459
 460   OpenURLParams params(
 461       url, Referrer(), disposition,
 462       ui::PageTransitionFromInt(
 463           ui::PAGE_TRANSITION_AUTO_BOOKMARK |
 464           ui::PAGE_TRANSITION_HOME_PAGE),
 465       false);
 466   params.extra_headers = extra_headers;
 467   browser->OpenURL(params);
 468 }
 469
 470 void OpenCurrentURL(Browser* browser) {
 471   content::RecordAction(UserMetricsAction("LoadURL"));
 472   LocationBar* location_bar = browser->window()->GetLocationBar();
 473   if (!location_bar)
 474     return;
 475
 476   GURL url(location_bar->GetDestinationURL());
 477
 478   ui::PageTransition page_transition = location_bar->GetPageTransition();
 479   ui::PageTransition page_transition_without_qualifier(
 480       ui::PageTransitionStripQualifier(page_transition));
 481   WindowOpenDisposition open_disposition =
 482       location_bar->GetWindowOpenDisposition();
 483   // A PAGE_TRANSITION_TYPED means the user has typed a URL. We do not want to
 484   // open URLs with instant_controller since in some cases it disregards it
 485   // and performs a search instead. For example, when using CTRL-Enter, the
 486   // location_bar is aware of the URL but instant is not.
 487   // Instant should also not handle PAGE_TRANSITION_RELOAD because its knowledge
 488   // of the omnibox text may be stale if the user focuses in the omnibox and
 489   // presses enter without typing anything.
 490   if (page_transition_without_qualifier != ui::PAGE_TRANSITION_TYPED &&
 491       page_transition_without_qualifier != ui::PAGE_TRANSITION_RELOAD &&
 492       browser->instant_controller() &&
 493       browser->instant_controller()->OpenInstant(open_disposition, url))
 494     return;
 495
 496   NavigateParams params(browser, url, page_transition);
 497   params.disposition = open_disposition;
 498   // Use ADD_INHERIT_OPENER so that all pages opened by the omnibox at least
 499   // inherit the opener. In some cases the tabstrip will determine the group
 500   // should be inherited, in which case the group is inherited instead of the
 501   // opener.
 502   params.tabstrip_add_types =
 503       TabStripModel::ADD_FORCE_INDEX | TabStripModel::ADD_INHERIT_OPENER;
 504   Navigate(&params);
 505
 506 #if defined(ENABLE_EXTENSIONS)
 507   DCHECK(extensions::ExtensionSystem::Get(
 508       browser->profile())->extension_service());
 509   const extensions::Extension* extension =
 510       extensions::ExtensionRegistry::Get(browser->profile())
 511           ->enabled_extensions().GetAppByURL(url);
 512   if (extension) {
 513     extensions::RecordAppLaunchType(extension_misc::APP_LAUNCH_OMNIBOX_LOCATION,
 514                                     extension->GetType());
 515   }
 516 #endif
 517 }
 518
 519 void Stop(Browser* browser) {
 520   content::RecordAction(UserMetricsAction("Stop"));
 521   browser->tab_strip_model()->GetActiveWebContents()->Stop();
 522 }
 523
 524 void NewWindow(Browser* browser) {
 525   NewEmptyWindow(browser->profile()->GetOriginalProfile(),
 526                  browser->host_desktop_type());
 527 }
 528
 529 void NewIncognitoWindow(Browser* browser) {
 530   NewEmptyWindow(browser->profile()->GetOffTheRecordProfile(),
 531                  browser->host_desktop_type());
 532 }
 533
 534 void CloseWindow(Browser* browser) {
 535   content::RecordAction(UserMetricsAction("CloseWindow"));
 536   browser->window()->Close();
 537 }
 538
 539 void NewTab(Browser* browser) {
 540   content::RecordAction(UserMetricsAction("NewTab"));
 541   // TODO(asvitkine): This is invoked programmatically from several places.
 542   // Audit the code and change it so that the histogram only gets collected for
 543   // user-initiated commands.
 544   UMA_HISTOGRAM_ENUMERATION("Tab.NewTab", TabStripModel::NEW_TAB_COMMAND,
 545                             TabStripModel::NEW_TAB_ENUM_COUNT);
 546
 547   if (browser->is_type_tabbed()) {
 548     AddTabAt(browser, GURL(), -1, true);
 549     browser->tab_strip_model()->GetActiveWebContents()->RestoreFocus();
 550   } else {
 551     ScopedTabbedBrowserDisplayer displayer(browser->profile(),
 552                                            browser->host_desktop_type());
 553     Browser* b = displayer.browser();
 554     AddTabAt(b, GURL(), -1, true);
 555     b->window()->Show();
 556     // The call to AddBlankTabAt above did not set the focus to the tab as its
 557     // window was not active, so we have to do it explicitly.
 558     // See http://crbug.com/6380.
 559     b->tab_strip_model()->GetActiveWebContents()->RestoreFocus();
 560   }
 561 }
 562
 563 void CloseTab(Browser* browser) {
 564   content::RecordAction(UserMetricsAction("CloseTab_Accelerator"));
 565   browser->tab_strip_model()->CloseSelectedTabs();
 566 }
 567
 568 bool CanZoomIn(content::WebContents* contents) {
 569   ui_zoom::ZoomController* zoom_controller =
 570       ui_zoom::ZoomController::FromWebContents(contents);
 571   return zoom_controller->GetZoomPercent() != contents->GetMaximumZoomPercent();
 572 }
 573
 574 bool CanZoomOut(content::WebContents* contents) {
 575   ui_zoom::ZoomController* zoom_controller =
 576       ui_zoom::ZoomController::FromWebContents(contents);
 577   return zoom_controller->GetZoomPercent() !=
 578       contents->GetMinimumZoomPercent();
 579 }
 580
 581 bool CanResetZoom(content::WebContents* contents) {
 582   ui_zoom::ZoomController* zoom_controller =
 583       ui_zoom::ZoomController::FromWebContents(contents);
 584   return !zoom_controller->IsAtDefaultZoom() ||
 585          !zoom_controller->PageScaleFactorIsOne();
 586 }
 587
 588 TabStripModelDelegate::RestoreTabType GetRestoreTabType(
 589     const Browser* browser) {
 590   TabRestoreService* service =
 591       TabRestoreServiceFactory::GetForProfile(browser->profile());
 592   if (!service || service->entries().empty())
 593     return TabStripModelDelegate::RESTORE_NONE;
 594   if (service->entries().front()->type == TabRestoreService::WINDOW)
 595     return TabStripModelDelegate::RESTORE_WINDOW;
 596   return TabStripModelDelegate::RESTORE_TAB;
 597 }
 598
 599 void SelectNextTab(Browser* browser) {
 600   content::RecordAction(UserMetricsAction("SelectNextTab"));
 601   browser->tab_strip_model()->SelectNextTab();
 602 }
 603
 604 void SelectPreviousTab(Browser* browser) {
 605   content::RecordAction(UserMetricsAction("SelectPrevTab"));
 606   browser->tab_strip_model()->SelectPreviousTab();
 607 }
 608
 609 void MoveTabNext(Browser* browser) {
 610   content::RecordAction(UserMetricsAction("MoveTabNext"));
 611   browser->tab_strip_model()->MoveTabNext();
 612 }
 613
 614 void MoveTabPrevious(Browser* browser) {
 615   content::RecordAction(UserMetricsAction("MoveTabPrevious"));
 616   browser->tab_strip_model()->MoveTabPrevious();
 617 }
 618
 619 void SelectNumberedTab(Browser* browser, int index) {
 620   if (index < browser->tab_strip_model()->count()) {
 621     content::RecordAction(UserMetricsAction("SelectNumberedTab"));
 622     browser->tab_strip_model()->ActivateTabAt(index, true);
 623   }
 624 }
 625
 626 void SelectLastTab(Browser* browser) {
 627   content::RecordAction(UserMetricsAction("SelectLastTab"));
 628   browser->tab_strip_model()->SelectLastTab();
 629 }
 630
 631 void DuplicateTab(Browser* browser) {
 632   content::RecordAction(UserMetricsAction("Duplicate"));
 633   DuplicateTabAt(browser, browser->tab_strip_model()->active_index());
 634 }
 635
 636 bool CanDuplicateTab(const Browser* browser) {
 637   return CanDuplicateTabAt(browser, browser->tab_strip_model()->active_index());
 638 }
 639
 640 WebContents* DuplicateTabAt(Browser* browser, int index) {
 641   WebContents* contents = browser->tab_strip_model()->GetWebContentsAt(index);
 642   CHECK(contents);
 643   WebContents* contents_dupe = contents->Clone();
 644
 645   bool pinned = false;
 646   if (browser->CanSupportWindowFeature(Browser::FEATURE_TABSTRIP)) {
 647     // If this is a tabbed browser, just create a duplicate tab inside the same
 648     // window next to the tab being duplicated.
 649     int index = browser->tab_strip_model()->GetIndexOfWebContents(contents);
 650     pinned = browser->tab_strip_model()->IsTabPinned(index);
 651     int add_types = TabStripModel::ADD_ACTIVE |
 652         TabStripModel::ADD_INHERIT_GROUP |
 653         (pinned ? TabStripModel::ADD_PINNED : 0);
 654     browser->tab_strip_model()->InsertWebContentsAt(
 655         index + 1, contents_dupe, add_types);
 656   } else {
 657     Browser* new_browser = NULL;
 658     if (browser->is_app() && !browser->is_type_popup()) {
 659       new_browser = new Browser(
 660           Browser::CreateParams::CreateForApp(browser->app_name(),
 661                                               browser->is_trusted_source(),
 662                                               gfx::Rect(),
 663                                               browser->profile(),
 664                                               browser->host_desktop_type()));
 665     } else {
 666       new_browser = new Browser(
 667           Browser::CreateParams(browser->type(), browser->profile(),
 668                                 browser->host_desktop_type()));
 669     }
 670     // Preserve the size of the original window. The new window has already
 671     // been given an offset by the OS, so we shouldn't copy the old bounds.
 672     BrowserWindow* new_window = new_browser->window();
 673     new_window->SetBounds(gfx::Rect(new_window->GetRestoredBounds().origin(),
 674                           browser->window()->GetRestoredBounds().size()));
 675
 676     // We need to show the browser now.  Otherwise ContainerWin assumes the
 677     // WebContents is invisible and won't size it.
 678     new_browser->window()->Show();
 679
 680     // The page transition below is only for the purpose of inserting the tab.
 681     new_browser->tab_strip_model()->AddWebContents(
 682         contents_dupe, -1,
 683         ui::PAGE_TRANSITION_LINK,
 684         TabStripModel::ADD_ACTIVE);
 685   }
 686
 687   SessionService* session_service =
 688       SessionServiceFactory::GetForProfileIfExisting(browser->profile());
 689   if (session_service)
 690     session_service->TabRestored(contents_dupe, pinned);
 691   return contents_dupe;
 692 }
 693
 694 bool CanDuplicateTabAt(const Browser* browser, int index) {
 695   WebContents* contents = browser->tab_strip_model()->GetWebContentsAt(index);
 696   // If an interstitial is showing, do not allow tab duplication, since
 697   // the last committed entry is what would get duplicated and is not
 698   // what the user expects to duplicate.
 699   return contents && !contents->ShowingInterstitialPage() &&
 700          contents->GetController().GetLastCommittedEntry();
 701 }
 702
 703 void ConvertPopupToTabbedBrowser(Browser* browser) {
 704   content::RecordAction(UserMetricsAction("ShowAsTab"));
 705   TabStripModel* tab_strip = browser->tab_strip_model();
 706   WebContents* contents =
 707       tab_strip->DetachWebContentsAt(tab_strip->active_index());
 708   Browser* b = new Browser(Browser::CreateParams(browser->profile(),
 709                                                  browser->host_desktop_type()));
 710   b->tab_strip_model()->AppendWebContents(contents, true);
 711   b->window()->Show();
 712 }
 713
 714 void Exit() {
 715   content::RecordAction(UserMetricsAction("Exit"));
 716   chrome::AttemptUserExit();
 717 }
 718
 719 void BookmarkCurrentPageIgnoringExtensionOverrides(Browser* browser) {
 720   content::RecordAction(UserMetricsAction("Star"));
 721
 722   BookmarkModel* model =
 723       BookmarkModelFactory::GetForProfile(browser->profile());
 724   if (!model || !model->loaded())
 725     return;  // Ignore requests until bookmarks are loaded.
 726
 727   GURL url;
 728   base::string16 title;
 729   WebContents* web_contents =
 730       browser->tab_strip_model()->GetActiveWebContents();
 731   GetURLAndTitleToBookmark(web_contents, &url, &title);
 732   bool is_bookmarked_by_any = model->IsBookmarked(url);
 733   if (!is_bookmarked_by_any &&
 734       web_contents->GetBrowserContext()->IsOffTheRecord()) {
 735     // If we're incognito the favicon may not have been saved. Save it now
 736     // so that bookmarks have an icon for the page.
 737     favicon::ContentFaviconDriver::FromWebContents(web_contents)->SaveFavicon();
 738   }
 739   bool was_bookmarked_by_user = bookmarks::IsBookmarkedByUser(model, url);
 740   bookmarks::AddIfNotBookmarked(model, url, title);
 741   bool is_bookmarked_by_user = bookmarks::IsBookmarkedByUser(model, url);
 742   // Make sure the model actually added a bookmark before showing the star. A
 743   // bookmark isn't created if the url is invalid.
 744   if (browser->window()->IsActive() && is_bookmarked_by_user) {
 745     // Only show the bubble if the window is active, otherwise we may get into
 746     // weird situations where the bubble is deleted as soon as it is shown.
 747     browser->window()->ShowBookmarkBubble(url, was_bookmarked_by_user);
 748   }
 749 }
 750
 751 void BookmarkCurrentPageAllowingExtensionOverrides(Browser* browser) {
 752   DCHECK(!chrome::ShouldRemoveBookmarkThisPageUI(browser->profile()));
 753
 754 #if defined(ENABLE_EXTENSIONS)
 755   const extensions::Extension* extension = NULL;
 756   extensions::Command command;
 757   extensions::CommandService::ExtensionCommandType command_type;
 758   if (GetBookmarkOverrideCommand(browser->profile(),
 759                                  &extension,
 760                                  &command,
 761                                  &command_type)) {
 762     switch (command_type) {
 763       case extensions::CommandService::NAMED:
 764         browser->window()->ExecuteExtensionCommand(extension, command);
 765         break;
 766       case extensions::CommandService::BROWSER_ACTION:
 767       case extensions::CommandService::PAGE_ACTION:
 768         // BookmarkCurrentPage is called through a user gesture, so it is safe
 769         // to grant the active tab permission.
 770         extensions::ExtensionActionAPI::Get(browser->profile())->
 771             ShowExtensionActionPopup(extension, browser, true);
 772         break;
 773     }
 774     return;
 775   }
 776 #endif
 777   BookmarkCurrentPageIgnoringExtensionOverrides(browser);
 778 }
 779
 780 bool CanBookmarkCurrentPage(const Browser* browser) {
 781   return CanBookmarkCurrentPageInternal(browser, true);
 782 }
 783
 784 void BookmarkAllTabs(Browser* browser) {
 785   content::RecordAction(UserMetricsAction("BookmarkAllTabs"));
 786   chrome::ShowBookmarkAllTabsDialog(browser);
 787 }
 788
 789 bool CanBookmarkAllTabs(const Browser* browser) {
 790   return browser->tab_strip_model()->count() > 1 &&
 791              !chrome::ShouldRemoveBookmarkOpenPagesUI(browser->profile()) &&
 792              CanBookmarkCurrentPageInternal(browser, false);
 793 }
 794
 795 void Translate(Browser* browser) {
 796   if (!browser->window()->IsActive())
 797     return;
 798
 799   WebContents* web_contents =
 800       browser->tab_strip_model()->GetActiveWebContents();
 801   ChromeTranslateClient* chrome_translate_client =
 802       ChromeTranslateClient::FromWebContents(web_contents);
 803
 804   translate::TranslateStep step = translate::TRANSLATE_STEP_BEFORE_TRANSLATE;
 805   if (chrome_translate_client) {
 806     if (chrome_translate_client->GetLanguageState().translation_pending())
 807       step = translate::TRANSLATE_STEP_TRANSLATING;
 808     else if (chrome_translate_client->GetLanguageState().IsPageTranslated())
 809       step = translate::TRANSLATE_STEP_AFTER_TRANSLATE;
 810   }
 811   browser->window()->ShowTranslateBubble(
 812       web_contents, step, translate::TranslateErrors::NONE, true);
 813 }
 814
 815 void ManagePasswordsForPage(Browser* browser) {
 816   WebContents* web_contents =
 817       browser->tab_strip_model()->GetActiveWebContents();
 818   ManagePasswordsUIController* controller =
 819       ManagePasswordsUIController::FromWebContents(web_contents);
 820   TabDialogs::FromWebContents(web_contents)->ShowManagePasswordsBubble(
 821       !controller->IsAutomaticallyOpeningBubble());
 822 }
 823
 824 #if defined(OS_WIN)
 825 void TogglePagePinnedToStartScreen(Browser* browser) {
 826   MetroPinTabHelper::FromWebContents(
 827       browser->tab_strip_model()->GetActiveWebContents())->
 828           TogglePinnedToStartScreen();
 829 }
 830 #endif
 831
 832 void SavePage(Browser* browser) {
 833   content::RecordAction(UserMetricsAction("SavePage"));
 834   WebContents* current_tab = browser->tab_strip_model()->GetActiveWebContents();
 835   if (current_tab && current_tab->GetContentsMimeType() == "application/pdf")
 836     content::RecordAction(UserMetricsAction("PDF.SavePage"));
 837   current_tab->OnSavePage();
 838 }
 839
 840 bool CanSavePage(const Browser* browser) {
 841   // LocalState can be NULL in tests.
 842   if (g_browser_process->local_state() &&
 843       !g_browser_process->local_state()->GetBoolean(
 844       prefs::kAllowFileSelectionDialogs)) {
 845     return false;
 846   }
 847   return !browser->is_devtools() &&
 848       !(GetContentRestrictions(browser) & CONTENT_RESTRICTION_SAVE);
 849 }
 850
 851 void ShowFindBar(Browser* browser) {
 852   browser->GetFindBarController()->Show();
 853 }
 854
 855 void ShowWebsiteSettings(Browser* browser,
 856                          content::WebContents* web_contents,
 857                          const GURL& url,
 858                          const SSLStatus& ssl) {
 859   browser->window()->ShowWebsiteSettings(
 860       Profile::FromBrowserContext(web_contents->GetBrowserContext()),
 861       web_contents, url, ssl);
 862 }
 863
 864 void Print(Browser* browser) {
 865 #if defined(ENABLE_PRINTING)
 866   printing::StartPrint(
 867       browser->tab_strip_model()->GetActiveWebContents(),
 868       browser->profile()->GetPrefs()->GetBoolean(prefs::kPrintPreviewDisabled),
 869       false);
 870 #endif  // defined(ENABLE_PRINTING)
 871 }
 872
 873 bool CanPrint(Browser* browser) {
 874   // Do not print when printing is disabled via pref or policy.
 875   // Do not print when a constrained window is showing. It's confusing.
 876   // TODO(gbillock): Need to re-assess the call to
 877   // IsShowingWebContentsModalDialog after a popup management policy is
 878   // refined -- we will probably want to just queue the print request, not
 879   // block it.
 880   return browser->profile()->GetPrefs()->GetBoolean(prefs::kPrintingEnabled) &&
 881       !(IsShowingWebContentsModalDialog(browser) ||
 882       GetContentRestrictions(browser) & CONTENT_RESTRICTION_PRINT);
 883 }
 884
 885 #if defined(ENABLE_BASIC_PRINTING)
 886 void BasicPrint(Browser* browser) {
 887   printing::StartBasicPrint(browser->tab_strip_model()->GetActiveWebContents());
 888 }
 889
 890 bool CanBasicPrint(Browser* browser) {
 891   // If printing is not disabled via pref or policy, it is always possible to
 892   // advanced print when the print preview is visible.  The exception to this
 893   // is under Win8 ash, since showing the advanced print dialog will open it
 894   // modally on the Desktop and hang the browser.
 895 #if defined(OS_WIN)
 896   if (chrome::GetActiveDesktop() == chrome::HOST_DESKTOP_TYPE_ASH)
 897     return false;
 898 #endif
 899
 900   return browser->profile()->GetPrefs()->GetBoolean(prefs::kPrintingEnabled) &&
 901       (PrintPreviewShowing(browser) || CanPrint(browser));
 902 }
 903 #endif  // ENABLE_BASIC_PRINTING
 904
 905 void EmailPageLocation(Browser* browser) {
 906   content::RecordAction(UserMetricsAction("EmailPageLocation"));
 907   WebContents* wc = browser->tab_strip_model()->GetActiveWebContents();
 908   DCHECK(wc);
 909
 910   std::string title = net::EscapeQueryParamValue(
 911       base::UTF16ToUTF8(wc->GetTitle()), false);
 912   std::string page_url = net::EscapeQueryParamValue(wc->GetURL().spec(), false);
 913   std::string mailto = std::string("mailto:?subject=Fwd:%20") +
 914       title + "&body=%0A%0A" + page_url;
 915   platform_util::OpenExternal(browser->profile(), GURL(mailto));
 916 }
 917
 918 bool CanEmailPageLocation(const Browser* browser) {
 919   return browser->toolbar_model()->ShouldDisplayURL() &&
 920       browser->tab_strip_model()->GetActiveWebContents()->GetURL().is_valid();
 921 }
 922
 923 void CutCopyPaste(Browser* browser, int command_id) {
 924   if (command_id == IDC_CUT)
 925     content::RecordAction(UserMetricsAction("Cut"));
 926   else if (command_id == IDC_COPY)
 927     content::RecordAction(UserMetricsAction("Copy"));
 928   else
 929     content::RecordAction(UserMetricsAction("Paste"));
 930   browser->window()->CutCopyPaste(command_id);
 931 }
 932
 933 void Find(Browser* browser) {
 934   content::RecordAction(UserMetricsAction("Find"));
 935   FindInPage(browser, false, false);
 936 }
 937
 938 void FindNext(Browser* browser) {
 939   content::RecordAction(UserMetricsAction("FindNext"));
 940   FindInPage(browser, true, true);
 941 }
 942
 943 void FindPrevious(Browser* browser) {
 944   content::RecordAction(UserMetricsAction("FindPrevious"));
 945   FindInPage(browser, true, false);
 946 }
 947
 948 void FindInPage(Browser* browser, bool find_next, bool forward_direction) {
 949   ShowFindBar(browser);
 950   if (find_next) {
 951     base::string16 find_text;
 952     FindTabHelper* find_helper = FindTabHelper::FromWebContents(
 953         browser->tab_strip_model()->GetActiveWebContents());
 954 #if defined(OS_MACOSX)
 955     // We always want to search for the current contents of the find bar on
 956     // OS X. For regular profile it's always the current find pboard. For
 957     // Incognito window it's the newest value of the find pboard content and
 958     // user-typed text.
 959     FindBar* find_bar = browser->GetFindBarController()->find_bar();
 960     find_text = find_bar->GetFindText();
 961 #endif
 962     find_helper->StartFinding(find_text, forward_direction, false);
 963   }
 964 }
 965
 966 void Zoom(Browser* browser, content::PageZoom zoom) {
 967   ui_zoom::PageZoom::Zoom(browser->tab_strip_model()->GetActiveWebContents(),
 968                           zoom);
 969 }
 970
 971 void FocusToolbar(Browser* browser) {
 972   content::RecordAction(UserMetricsAction("FocusToolbar"));
 973   browser->window()->FocusToolbar();
 974 }
 975
 976 void FocusLocationBar(Browser* browser) {
 977   content::RecordAction(UserMetricsAction("FocusLocation"));
 978   browser->window()->SetFocusToLocationBar(true);
 979 }
 980
 981 void FocusSearch(Browser* browser) {
 982   // TODO(beng): replace this with FocusLocationBar
 983   content::RecordAction(UserMetricsAction("FocusSearch"));
 984   browser->window()->GetLocationBar()->FocusSearch();
 985 }
 986
 987 void FocusAppMenu(Browser* browser) {
 988   content::RecordAction(UserMetricsAction("FocusAppMenu"));
 989   browser->window()->FocusAppMenu();
 990 }
 991
 992 void FocusBookmarksToolbar(Browser* browser) {
 993   content::RecordAction(UserMetricsAction("FocusBookmarksToolbar"));
 994   browser->window()->FocusBookmarksToolbar();
 995 }
 996
 997 void FocusInfobars(Browser* browser) {
 998   content::RecordAction(UserMetricsAction("FocusInfobars"));
 999   browser->window()->FocusInfobars();
1000 }
1001
1002 void FocusNextPane(Browser* browser) {
1003   content::RecordAction(UserMetricsAction("FocusNextPane"));
1004   browser->window()->RotatePaneFocus(true);
1005 }
1006
1007 void FocusPreviousPane(Browser* browser) {
1008   content::RecordAction(UserMetricsAction("FocusPreviousPane"));
1009   browser->window()->RotatePaneFocus(false);
1010 }
1011
1012 void ToggleDevToolsWindow(Browser* browser, DevToolsToggleAction action) {
1013   if (action.type() == DevToolsToggleAction::kShowConsole)
1014     content::RecordAction(UserMetricsAction("DevTools_ToggleConsole"));
1015   else
1016     content::RecordAction(UserMetricsAction("DevTools_ToggleWindow"));
1017   DevToolsWindow::ToggleDevToolsWindow(browser, action);
1018 }
1019
1020 bool CanOpenTaskManager() {
1021 #if defined(ENABLE_TASK_MANAGER)
1022   return true;
1023 #else
1024   return false;
1025 #endif
1026 }
1027
1028 void OpenTaskManager(Browser* browser) {
1029 #if defined(ENABLE_TASK_MANAGER)
1030   content::RecordAction(UserMetricsAction("TaskManager"));
1031   chrome::ShowTaskManager(browser);
1032 #else
1033   NOTREACHED();
1034 #endif
1035 }
1036
1037 void OpenFeedbackDialog(Browser* browser) {
1038   content::RecordAction(UserMetricsAction("Feedback"));
1039   chrome::ShowFeedbackPage(browser, std::string(), std::string());
1040 }
1041
1042 void ToggleBookmarkBar(Browser* browser) {
1043   content::RecordAction(UserMetricsAction("ShowBookmarksBar"));
1044   ToggleBookmarkBarWhenVisible(browser->profile());
1045 }
1046
1047 void ShowAppMenu(Browser* browser) {
1048   // We record the user metric for this event in WrenchMenu::RunMenu.
1049   browser->window()->ShowAppMenu();
1050 }
1051
1052 void ShowAvatarMenu(Browser* browser) {
1053   browser->window()->ShowAvatarBubbleFromAvatarButton(
1054       BrowserWindow::AVATAR_BUBBLE_MODE_DEFAULT,
1055       signin::ManageAccountsParams());
1056 }
1057
1058 void ShowFastUserSwitcher(Browser* browser) {
1059   browser->window()->ShowAvatarBubbleFromAvatarButton(
1060       BrowserWindow::AVATAR_BUBBLE_MODE_FAST_USER_SWITCH,
1061       signin::ManageAccountsParams());
1062 }
1063
1064 void OpenUpdateChromeDialog(Browser* browser) {
1065   if (UpgradeDetector::GetInstance()->is_outdated_install()) {
1066     content::NotificationService::current()->Notify(
1067         chrome::NOTIFICATION_OUTDATED_INSTALL,
1068         content::NotificationService::AllSources(),
1069         content::NotificationService::NoDetails());
1070   } else if (UpgradeDetector::GetInstance()->is_outdated_install_no_au()) {
1071     content::NotificationService::current()->Notify(
1072         chrome::NOTIFICATION_OUTDATED_INSTALL_NO_AU,
1073         content::NotificationService::AllSources(),
1074         content::NotificationService::NoDetails());
1075   } else {
1076     content::RecordAction(UserMetricsAction("UpdateChrome"));
1077     browser->window()->ShowUpdateChromeDialog();
1078   }
1079 }
1080
1081 void ToggleSpeechInput(Browser* browser) {
1082   SearchTabHelper* search_tab_helper =
1083       SearchTabHelper::FromWebContents(
1084           browser->tab_strip_model()->GetActiveWebContents());
1085   // |search_tab_helper| can be null in unit tests.
1086   if (search_tab_helper)
1087     search_tab_helper->ToggleVoiceSearch();
1088 }
1089
1090 void DistillCurrentPage(Browser* browser) {
1091   DistillCurrentPageAndView(browser->tab_strip_model()->GetActiveWebContents());
1092 }
1093
1094 bool CanRequestTabletSite(WebContents* current_tab) {
1095   return current_tab &&
1096       current_tab->GetController().GetLastCommittedEntry() != NULL;
1097 }
1098
1099 bool IsRequestingTabletSite(Browser* browser) {
1100   WebContents* current_tab = browser->tab_strip_model()->GetActiveWebContents();
1101   if (!current_tab)
1102     return false;
1103   content::NavigationEntry* entry =
1104       current_tab->GetController().GetLastCommittedEntry();
1105   if (!entry)
1106     return false;
1107   return entry->GetIsOverridingUserAgent();
1108 }
1109
1110 void ToggleRequestTabletSite(Browser* browser) {
1111   WebContents* current_tab = browser->tab_strip_model()->GetActiveWebContents();
1112   if (!current_tab)
1113     return;
1114   NavigationController& controller = current_tab->GetController();
1115   NavigationEntry* entry = controller.GetLastCommittedEntry();
1116   if (!entry)
1117     return;
1118   if (entry->GetIsOverridingUserAgent()) {
1119     entry->SetIsOverridingUserAgent(false);
1120   } else {
1121     entry->SetIsOverridingUserAgent(true);
1122     chrome::VersionInfo version_info;
1123     std::string product = version_info.ProductNameAndVersionForUserAgent();
1124     current_tab->SetUserAgentOverride(content::BuildUserAgentFromOSAndProduct(
1125         kOsOverrideForTabletSite, product));
1126   }
1127   controller.ReloadOriginalRequestURL(true);
1128 }
1129
1130 void ToggleFullscreenMode(Browser* browser) {
1131   DCHECK(browser);
1132   browser->exclusive_access_manager()
1133       ->fullscreen_controller()
1134       ->ToggleBrowserFullscreenMode();
1135 }
1136
1137 void ClearCache(Browser* browser) {
1138   BrowsingDataRemover* remover =
1139       BrowsingDataRemover::CreateForUnboundedRange(browser->profile());
1140   remover->Remove(BrowsingDataRemover::REMOVE_CACHE,
1141                   BrowsingDataHelper::UNPROTECTED_WEB);
1142   // BrowsingDataRemover takes care of deleting itself when done.
1143 }
1144
1145 bool IsDebuggerAttachedToCurrentTab(Browser* browser) {
1146   WebContents* contents = browser->tab_strip_model()->GetActiveWebContents();
1147   return contents ?
1148       content::DevToolsAgentHost::IsDebuggerAttached(contents) : false;
1149 }
1150
1151 void ViewSource(Browser* browser, WebContents* contents) {
1152   DCHECK(contents);
1153
1154   // Use the last committed entry, since the pending entry hasn't loaded yet and
1155   // won't be copied into the cloned tab.
1156   NavigationEntry* entry = contents->GetController().GetLastCommittedEntry();
1157   if (!entry)
1158     return;
1159
1160   ViewSource(browser, contents, entry->GetURL(), entry->GetPageState());
1161 }
1162
1163 void ViewSource(Browser* browser,
1164                 WebContents* contents,
1165                 const GURL& url,
1166                 const content::PageState& page_state) {
1167   content::RecordAction(UserMetricsAction("ViewSource"));
1168   DCHECK(contents);
1169
1170   WebContents* view_source_contents = contents->Clone();
1171   DCHECK(view_source_contents->GetController().CanPruneAllButLastCommitted());
1172   view_source_contents->GetController().PruneAllButLastCommitted();
1173   NavigationEntry* last_committed_entry =
1174       view_source_contents->GetController().GetLastCommittedEntry();
1175   if (!last_committed_entry)
1176     return;
1177
1178   GURL view_source_url =
1179       GURL(content::kViewSourceScheme + std::string(":") + url.spec());
1180   last_committed_entry->SetVirtualURL(view_source_url);
1181
1182   // Do not restore scroller position.
1183   last_committed_entry->SetPageState(page_state.RemoveScrollOffset());
1184
1185   // Do not restore title, derive it from the url.
1186   last_committed_entry->SetTitle(base::string16());
1187
1188   // Now show view-source entry.
1189   if (browser->CanSupportWindowFeature(Browser::FEATURE_TABSTRIP)) {
1190     // If this is a tabbed browser, just create a duplicate tab inside the same
1191     // window next to the tab being duplicated.
1192     int index = browser->tab_strip_model()->GetIndexOfWebContents(contents);
1193     int add_types = TabStripModel::ADD_ACTIVE |
1194         TabStripModel::ADD_INHERIT_GROUP;
1195     browser->tab_strip_model()->InsertWebContentsAt(
1196         index + 1,
1197         view_source_contents,
1198         add_types);
1199   } else {
1200     Browser* b = new Browser(
1201         Browser::CreateParams(Browser::TYPE_TABBED, browser->profile(),
1202                               browser->host_desktop_type()));
1203
1204     // Preserve the size of the original window. The new window has already
1205     // been given an offset by the OS, so we shouldn't copy the old bounds.
1206     BrowserWindow* new_window = b->window();
1207     new_window->SetBounds(gfx::Rect(new_window->GetRestoredBounds().origin(),
1208                           browser->window()->GetRestoredBounds().size()));
1209
1210     // We need to show the browser now. Otherwise ContainerWin assumes the
1211     // WebContents is invisible and won't size it.
1212     b->window()->Show();
1213
1214     // The page transition below is only for the purpose of inserting the tab.
1215     b->tab_strip_model()->AddWebContents(view_source_contents, -1,
1216                                          ui::PAGE_TRANSITION_LINK,
1217                                          TabStripModel::ADD_ACTIVE);
1218   }
1219
1220   SessionService* session_service =
1221       SessionServiceFactory::GetForProfileIfExisting(browser->profile());
1222   if (session_service)
1223     session_service->TabRestored(view_source_contents, false);
1224 }
1225
1226 void ViewSelectedSource(Browser* browser) {
1227   ViewSource(browser, browser->tab_strip_model()->GetActiveWebContents());
1228 }
1229
1230 bool CanViewSource(const Browser* browser) {
1231   return !browser->is_devtools() &&
1232       browser->tab_strip_model()->GetActiveWebContents()->GetController().
1233           CanViewSource();
1234 }
1235
1236 #if defined(ENABLE_EXTENSIONS)
1237 void CreateApplicationShortcuts(Browser* browser) {
1238   content::RecordAction(UserMetricsAction("CreateShortcut"));
1239   extensions::TabHelper::FromWebContents(
1240       browser->tab_strip_model()->GetActiveWebContents())->
1241           CreateApplicationShortcuts();
1242 }
1243
1244 void CreateBookmarkAppFromCurrentWebContents(Browser* browser) {
1245   content::RecordAction(UserMetricsAction("CreateHostedApp"));
1246   extensions::TabHelper::FromWebContents(
1247       browser->tab_strip_model()->GetActiveWebContents())->
1248           CreateHostedAppFromWebContents();
1249 }
1250
1251 bool CanCreateApplicationShortcuts(const Browser* browser) {
1252   return extensions::TabHelper::FromWebContents(
1253       browser->tab_strip_model()->GetActiveWebContents())->
1254           CanCreateApplicationShortcuts();
1255 }
1256
1257 bool CanCreateBookmarkApp(const Browser* browser) {
1258   return extensions::TabHelper::FromWebContents(
1259              browser->tab_strip_model()->GetActiveWebContents())
1260       ->CanCreateBookmarkApp();
1261 }
1262
1263 void ConvertTabToAppWindow(Browser* browser,
1264                            content::WebContents* contents) {
1265   const GURL& url = contents->GetController().GetLastCommittedEntry()->GetURL();
1266   std::string app_name = web_app::GenerateApplicationNameFromURL(url);
1267
1268   int index = browser->tab_strip_model()->GetIndexOfWebContents(contents);
1269   if (index >= 0)
1270     browser->tab_strip_model()->DetachWebContentsAt(index);
1271
1272   Browser* app_browser = new Browser(
1273       Browser::CreateParams::CreateForApp(app_name,
1274                                           true /* trusted_source */,
1275                                           gfx::Rect(),
1276                                           browser->profile(),
1277                                           browser->host_desktop_type()));
1278   app_browser->tab_strip_model()->AppendWebContents(contents, true);
1279
1280   contents->GetMutableRendererPrefs()->can_accept_load_drops = false;
1281   contents->GetRenderViewHost()->SyncRendererPrefs();
1282   app_browser->window()->Show();
1283 }
1284 #endif  // defined(ENABLE_EXTENSIONS)
1285
1286 }  // namespace chrome