ash/shell.cc

   1 // Copyright (c) 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 "ash/shell.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "ash/accelerators/focus_manager_factory.h"
  11 #include "ash/ash_switches.h"
  12 #include "ash/caps_lock_delegate.h"
  13 #include "ash/desktop_background/desktop_background_controller.h"
  14 #include "ash/desktop_background/desktop_background_resources.h"
  15 #include "ash/desktop_background/desktop_background_view.h"
  16 #include "ash/display/display_controller.h"
  17 #include "ash/display/mouse_cursor_event_filter.h"
  18 #include "ash/display/multi_display_manager.h"
  19 #include "ash/display/screen_position_controller.h"
  20 #include "ash/drag_drop/drag_drop_controller.h"
  21 #include "ash/focus_cycler.h"
  22 #include "ash/high_contrast/high_contrast_controller.h"
  23 #include "ash/magnifier/magnification_controller.h"
  24 #include "ash/root_window_controller.h"
  25 #include "ash/screen_ash.h"
  26 #include "ash/shell_delegate.h"
  27 #include "ash/shell_factory.h"
  28 #include "ash/shell_window_ids.h"
  29 #include "ash/system/status_area_widget.h"
  30 #include "ash/system/tray/system_tray_delegate.h"
  31 #include "ash/tooltips/tooltip_controller.h"
  32 #include "ash/touch/touch_observer_hud.h"
  33 #include "ash/wm/activation_controller.h"
  34 #include "ash/wm/always_on_top_controller.h"
  35 #include "ash/wm/app_list_controller.h"
  36 #include "ash/wm/base_layout_manager.h"
  37 #include "ash/wm/capture_controller.h"
  38 #include "ash/wm/coordinate_conversion.h"
  39 #include "ash/wm/custom_frame_view_ash.h"
  40 #include "ash/wm/dialog_frame_view.h"
  41 #include "ash/wm/event_client_impl.h"
  42 #include "ash/wm/event_rewriter_event_filter.h"
  43 #include "ash/wm/overlay_event_filter.h"
  44 #include "ash/wm/power_button_controller.h"
  45 #include "ash/wm/property_util.h"
  46 #include "ash/wm/resize_shadow_controller.h"
  47 #include "ash/wm/root_window_layout_manager.h"
  48 #include "ash/wm/screen_dimmer.h"
  49 #include "ash/wm/session_state_controller.h"
  50 #include "ash/wm/session_state_controller_impl.h"
  51 #include "ash/wm/session_state_controller_impl2.h"
  52 #include "ash/wm/shadow_controller.h"
  53 #include "ash/wm/stacking_controller.h"
  54 #include "ash/wm/system_gesture_event_filter.h"
  55 #include "ash/wm/system_modal_container_event_filter.h"
  56 #include "ash/wm/system_modal_container_layout_manager.h"
  57 #include "ash/wm/user_activity_detector.h"
  58 #include "ash/wm/video_detector.h"
  59 #include "ash/wm/visibility_controller.h"
  60 #include "ash/wm/window_cycle_controller.h"
  61 #include "ash/wm/window_modality_controller.h"
  62 #include "ash/wm/window_properties.h"
  63 #include "ash/wm/window_util.h"
  64 #include "ash/wm/workspace_controller.h"
  65 #include "base/bind.h"
  66 #include "base/command_line.h"
  67 #include "base/debug/leak_annotations.h"
  68 #include "ui/aura/client/aura_constants.h"
  69 #include "ui/aura/client/user_action_client.h"
  70 #include "ui/aura/display_manager.h"
  71 #include "ui/aura/env.h"
  72 #include "ui/aura/focus_manager.h"
  73 #include "ui/aura/layout_manager.h"
  74 #include "ui/aura/root_window.h"
  75 #include "ui/aura/shared/compound_event_filter.h"
  76 #include "ui/aura/shared/input_method_event_filter.h"
  77 #include "ui/aura/ui_controls_aura.h"
  78 #include "ui/aura/window.h"
  79 #include "ui/compositor/layer.h"
  80 #include "ui/compositor/layer_animator.h"
  81 #include "ui/gfx/display.h"
  82 #include "ui/gfx/image/image_skia.h"
  83 #include "ui/gfx/screen.h"
  84 #include "ui/gfx/size.h"
  85 #include "ui/ui_controls/ui_controls.h"
  86 #include "ui/views/focus/focus_manager_factory.h"
  87 #include "ui/views/widget/native_widget_aura.h"
  88 #include "ui/views/widget/widget.h"
  89
  90 #if !defined(OS_MACOSX)
  91 #include "ash/accelerators/accelerator_controller.h"
  92 #include "ash/accelerators/accelerator_filter.h"
  93 #include "ash/accelerators/nested_dispatcher_controller.h"
  94 #endif
  95
  96 #if defined(OS_CHROMEOS)
  97 #include "ash/display/output_configurator_animation.h"
  98 #include "base/message_pump_aurax11.h"
  99 #include "chromeos/display/output_configurator.h"
 100 #include "content/public/browser/gpu_data_manager.h"
 101 #include "content/public/common/gpu_feature_type.h"
 102 #endif  // defined(OS_CHROMEOS)
 103
 104 namespace ash {
 105
 106 namespace {
 107
 108 using aura::Window;
 109 using views::Widget;
 110
 111 // This dummy class is used for shell unit tests. We dont have chrome delegate
 112 // in these tests.
 113 class DummyUserWallpaperDelegate : public UserWallpaperDelegate {
 114  public:
 115   DummyUserWallpaperDelegate() {}
 116
 117   virtual ~DummyUserWallpaperDelegate() {}
 118
 119   virtual ash::WindowVisibilityAnimationType GetAnimationType() OVERRIDE {
 120     return WINDOW_VISIBILITY_ANIMATION_TYPE_FADE;
 121   }
 122
 123   virtual void UpdateWallpaper() OVERRIDE {
 124   }
 125
 126   virtual void InitializeWallpaper() OVERRIDE {
 127     ash::Shell::GetInstance()->desktop_background_controller()->
 128         CreateEmptyWallpaper();
 129   }
 130
 131   virtual void OpenSetWallpaperPage() OVERRIDE {
 132   }
 133
 134   virtual bool CanOpenSetWallpaperPage() OVERRIDE {
 135     return false;
 136   }
 137
 138   virtual void OnWallpaperAnimationFinished() OVERRIDE {
 139   }
 140
 141   virtual void OnWallpaperBootAnimationFinished() OVERRIDE {
 142   }
 143
 144  private:
 145   DISALLOW_COPY_AND_ASSIGN(DummyUserWallpaperDelegate);
 146 };
 147
 148 }  // namespace
 149
 150 // static
 151 Shell* Shell::instance_ = NULL;
 152 // static
 153 bool Shell::initially_hide_cursor_ = false;
 154
 155 ////////////////////////////////////////////////////////////////////////////////
 156 // Shell::TestApi
 157
 158 Shell::TestApi::TestApi(Shell* shell) : shell_(shell) {}
 159
 160 internal::RootWindowLayoutManager* Shell::TestApi::root_window_layout() {
 161   return shell_->GetPrimaryRootWindowController()->root_window_layout();
 162 }
 163
 164 aura::shared::InputMethodEventFilter*
 165     Shell::TestApi::input_method_event_filter() {
 166   return shell_->input_method_filter_.get();
 167 }
 168
 169 internal::SystemGestureEventFilter*
 170     Shell::TestApi::system_gesture_event_filter() {
 171   return shell_->system_gesture_filter_.get();
 172 }
 173
 174 internal::WorkspaceController* Shell::TestApi::workspace_controller() {
 175   return shell_->GetPrimaryRootWindowController()->workspace_controller();
 176 }
 177
 178 internal::ScreenPositionController*
 179     Shell::TestApi::screen_position_controller() {
 180   return shell_->screen_position_controller_.get();
 181 }
 182
 183 ////////////////////////////////////////////////////////////////////////////////
 184 // Shell, public:
 185
 186 Shell::Shell(ShellDelegate* delegate)
 187     : screen_(new ScreenAsh),
 188       active_root_window_(NULL),
 189       delegate_(delegate),
 190 #if defined(OS_CHROMEOS)
 191       output_configurator_(new chromeos::OutputConfigurator()),
 192       output_configurator_animation_(
 193           new internal::OutputConfiguratorAnimation()),
 194 #endif  // defined(OS_CHROMEOS)
 195       browser_context_(NULL),
 196       simulate_modal_window_open_for_testing_(false) {
 197   DCHECK(delegate_.get());
 198   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
 199   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
 200   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
 201     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 202   ui_controls::InstallUIControlsAura(internal::CreateUIControls());
 203 #if defined(OS_CHROMEOS)
 204   content::GpuFeatureType blacklisted_features =
 205       content::GpuDataManager::GetInstance()->GetBlacklistedFeatures();
 206   bool is_panel_fitting_disabled =
 207       (blacklisted_features & content::GPU_FEATURE_TYPE_PANEL_FITTING) ||
 208       CommandLine::ForCurrentProcess()->HasSwitch(
 209           switches::kAshDisablePanelFitting);
 210   output_configurator_->Init(!is_panel_fitting_disabled);
 211
 212   output_configurator_->AddObserver(output_configurator_animation_.get());
 213   base::MessagePumpAuraX11::Current()->AddDispatcherForRootWindow(
 214       output_configurator());
 215 #endif  // defined(OS_CHROMEOS)
 216 }
 217
 218 Shell::~Shell() {
 219   views::FocusManagerFactory::Install(NULL);
 220
 221   // Remove the focus from any window. This will prevent overhead and side
 222   // effects (e.g. crashes) from changing focus during shutdown.
 223   // See bug crbug.com/134502.
 224   if (active_root_window_)
 225     active_root_window_->GetFocusManager()->SetFocusedWindow(NULL, NULL);
 226
 227   // Please keep in same order as in Init() because it's easy to miss one.
 228   RemoveEnvEventFilter(user_activity_detector_.get());
 229   RemoveEnvEventFilter(event_rewriter_filter_.get());
 230   RemoveEnvEventFilter(overlay_filter_.get());
 231   RemoveEnvEventFilter(input_method_filter_.get());
 232   RemoveEnvEventFilter(window_modality_controller_.get());
 233   if (mouse_cursor_filter_.get())
 234     RemoveEnvEventFilter(mouse_cursor_filter_.get());
 235   RemoveEnvEventFilter(system_gesture_filter_.get());
 236 #if !defined(OS_MACOSX)
 237   RemoveEnvEventFilter(accelerator_filter_.get());
 238 #endif
 239   if (touch_observer_hud_.get())
 240     RemoveEnvEventFilter(touch_observer_hud_.get());
 241
 242   // TooltipController is deleted with the Shell so removing its references.
 243   RemoveEnvEventFilter(tooltip_controller_.get());
 244
 245   // AppList needs to be released before shelf layout manager, which is
 246   // destroyed with launcher container in the loop below. However, app list
 247   // container is now on top of launcher container and released after it.
 248   // TODO(xiyuan): Move it back when app list container is no longer needed.
 249   app_list_controller_.reset();
 250
 251   // Destroy SystemTrayDelegate before destroying the status area(s).
 252   system_tray_delegate_.reset();
 253
 254   // Destroy all child windows including widgets.
 255   display_controller_->CloseChildWindows();
 256
 257   // These need a valid Shell instance to clean up properly, so explicitly
 258   // delete them before invalidating the instance.
 259   // Alphabetical.
 260   drag_drop_controller_.reset();
 261   magnification_controller_.reset();
 262   power_button_controller_.reset();
 263   session_state_controller_.reset();
 264   resize_shadow_controller_.reset();
 265   shadow_controller_.reset();
 266   tooltip_controller_.reset();
 267   event_client_.reset();
 268   window_cycle_controller_.reset();
 269   capture_controller_.reset();
 270   nested_dispatcher_controller_.reset();
 271   user_action_client_.reset();
 272   visibility_controller_.reset();
 273
 274   // This also deletes all RootWindows.
 275   display_controller_.reset();
 276   screen_position_controller_.reset();
 277
 278   // Delete the activation controller after other controllers and launcher
 279   // because they might have registered ActivationChangeObserver.
 280   activation_controller_.reset();
 281
 282   DCHECK(instance_ == this);
 283   instance_ = NULL;
 284
 285 #if defined(OS_CHROMEOS)
 286   output_configurator_->RemoveObserver(output_configurator_animation_.get());
 287   base::MessagePumpAuraX11::Current()->RemoveDispatcherForRootWindow(
 288       output_configurator());
 289 #endif  // defined(OS_CHROMEOS)
 290 }
 291
 292 // static
 293 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 294   CHECK(!instance_);
 295   aura::Env::GetInstance()->SetDisplayManager(
 296       new internal::MultiDisplayManager());
 297   instance_ = new Shell(delegate);
 298   instance_->Init();
 299   return instance_;
 300 }
 301
 302 // static
 303 Shell* Shell::GetInstance() {
 304   DCHECK(instance_);
 305   return instance_;
 306 }
 307
 308 // static
 309 bool Shell::HasInstance() {
 310   return !!instance_;
 311 }
 312
 313 // static
 314 void Shell::DeleteInstance() {
 315   delete instance_;
 316   instance_ = NULL;
 317 }
 318
 319 // static
 320 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 321   return GetRootWindowController(GetPrimaryRootWindow());
 322 }
 323
 324 // static
 325 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 326   return Shell::GetInstance()->display_controller()->
 327       GetAllRootWindowControllers();
 328 }
 329
 330 // static
 331 aura::RootWindow* Shell::GetPrimaryRootWindow() {
 332   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 333 }
 334
 335 // static
 336 aura::RootWindow* Shell::GetActiveRootWindow() {
 337   return GetInstance()->active_root_window_;
 338 }
 339
 340 // static
 341 gfx::Screen* Shell::GetScreen() {
 342   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 343 }
 344
 345 // static
 346 Shell::RootWindowList Shell::GetAllRootWindows() {
 347   return Shell::GetInstance()->display_controller()->
 348       GetAllRootWindows();
 349 }
 350
 351 // static
 352 aura::Window* Shell::GetContainer(aura::RootWindow* root_window,
 353                                   int container_id) {
 354   return root_window->GetChildById(container_id);
 355 }
 356
 357 // static
 358 const aura::Window* Shell::GetContainer(const aura::RootWindow* root_window,
 359                                         int container_id) {
 360   return root_window->GetChildById(container_id);
 361 }
 362
 363 // static
 364 std::vector<aura::Window*> Shell::GetAllContainers(int container_id) {
 365   std::vector<aura::Window*> containers;
 366   RootWindowList root_windows = GetAllRootWindows();
 367   for (RootWindowList::const_iterator it = root_windows.begin();
 368        it != root_windows.end(); ++it) {
 369     aura::Window* container = (*it)->GetChildById(container_id);
 370     if (container)
 371       containers.push_back(container);
 372   }
 373   return containers;
 374 }
 375
 376 // static
 377 bool Shell::IsLauncherPerDisplayEnabled() {
 378   CommandLine* command_line = CommandLine::ForCurrentProcess();
 379   return command_line->HasSwitch(switches::kAshLauncherPerDisplay);
 380 }
 381
 382 void Shell::Init() {
 383   // Install the custom factory first so that views::FocusManagers for Tray,
 384   // Launcher, and WallPaper could be created by the factory.
 385   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 386
 387   env_filter_.reset(new aura::shared::CompoundEventFilter);
 388   AddEnvEventFilter(env_filter_.get());
 389
 390   focus_manager_.reset(new aura::FocusManager);
 391   activation_controller_.reset(
 392       new internal::ActivationController(focus_manager_.get()));
 393
 394   focus_cycler_.reset(new internal::FocusCycler());
 395
 396   screen_position_controller_.reset(new internal::ScreenPositionController);
 397   display_controller_.reset(new DisplayController);
 398   display_controller_->InitPrimaryDisplay();
 399   aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
 400   active_root_window_ = root_window;
 401
 402   cursor_manager_.SetDeviceScaleFactor(
 403       root_window->AsRootWindowHostDelegate()->GetDeviceScaleFactor());
 404
 405 #if !defined(OS_MACOSX)
 406   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 407   accelerator_controller_.reset(new AcceleratorController);
 408 #endif
 409
 410   // The order in which event filters are added is significant.
 411   user_activity_detector_.reset(new UserActivityDetector);
 412   AddEnvEventFilter(user_activity_detector_.get());
 413
 414   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
 415   AddEnvEventFilter(event_rewriter_filter_.get());
 416
 417   overlay_filter_.reset(new internal::OverlayEventFilter);
 418   AddEnvEventFilter(overlay_filter_.get());
 419   AddShellObserver(overlay_filter_.get());
 420
 421   input_method_filter_.reset(new aura::shared::InputMethodEventFilter());
 422   AddEnvEventFilter(input_method_filter_.get());
 423
 424 #if !defined(OS_MACOSX)
 425   accelerator_filter_.reset(new internal::AcceleratorFilter);
 426   AddEnvEventFilter(accelerator_filter_.get());
 427 #endif
 428
 429   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 430   AddEnvEventFilter(system_gesture_filter_.get());
 431
 432   capture_controller_.reset(new internal::CaptureController);
 433
 434   internal::RootWindowController* root_window_controller =
 435       new internal::RootWindowController(root_window);
 436   root_window_controller->CreateContainers();
 437   root_window_controller->CreateSystemBackground(
 438       delegate_->IsFirstRunAfterBoot());
 439
 440   CommandLine* command_line = CommandLine::ForCurrentProcess();
 441
 442   if (command_line->HasSwitch(switches::kAshTouchHud)) {
 443     touch_observer_hud_.reset(new internal::TouchObserverHUD);
 444     AddEnvEventFilter(touch_observer_hud_.get());
 445   }
 446
 447   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 448   AddEnvEventFilter(mouse_cursor_filter_.get());
 449
 450   // Create Controllers that may need root window.
 451   // TODO(oshima): Move as many controllers before creating
 452   // RootWindowController as possible.
 453   stacking_controller_.reset(new internal::StackingController);
 454   visibility_controller_.reset(new internal::VisibilityController);
 455   drag_drop_controller_.reset(new internal::DragDropController);
 456   user_action_client_.reset(delegate_->CreateUserActionClient());
 457   window_modality_controller_.reset(new internal::WindowModalityController);
 458   AddEnvEventFilter(window_modality_controller_.get());
 459
 460   magnification_controller_.reset(
 461       internal::MagnificationController::CreateInstance());
 462
 463   high_contrast_controller_.reset(new HighContrastController);
 464   video_detector_.reset(new VideoDetector);
 465   window_cycle_controller_.reset(
 466       new WindowCycleController(activation_controller_.get()));
 467
 468   tooltip_controller_.reset(new internal::TooltipController(
 469       drag_drop_controller_.get()));
 470   AddEnvEventFilter(tooltip_controller_.get());
 471
 472   event_client_.reset(new internal::EventClientImpl);
 473
 474   InitRootWindowController(root_window_controller);
 475
 476   // This controller needs to be set before SetupManagedWindowMode.
 477   desktop_background_controller_.reset(new DesktopBackgroundController());
 478   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 479   if (!user_wallpaper_delegate_.get())
 480     user_wallpaper_delegate_.reset(new DummyUserWallpaperDelegate());
 481
 482   // StatusAreaWidget uses Shell's CapsLockDelegate.
 483   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 484
 485   if (!command_line->HasSwitch(switches::kAuraNoShadows)) {
 486     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 487     shadow_controller_.reset(new internal::ShadowController());
 488   }
 489
 490   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 491   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 492   if (!system_tray_delegate_.get())
 493     system_tray_delegate_.reset(SystemTrayDelegate::CreateDummyDelegate());
 494
 495   // Creates StatusAreaWidget.
 496   root_window_controller->InitForPrimaryDisplay();
 497
 498   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 499   system_tray_delegate_->Initialize();
 500
 501   display_controller_->InitSecondaryDisplays();
 502
 503   // Force Layout
 504   root_window_controller->root_window_layout()->OnWindowResized();
 505
 506   // It needs to be created after OnWindowResized has been called, otherwise the
 507   // widget will not paint when restoring after a browser crash.  Also it needs
 508   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 509   // the correct size.
 510   user_wallpaper_delegate_->InitializeWallpaper();
 511
 512   if (command_line->HasSwitch(ash::switches::kAshNewLockAnimationsEnabled))
 513     session_state_controller_.reset(new SessionStateControllerImpl2);
 514   else
 515     session_state_controller_.reset(new SessionStateControllerImpl);
 516   power_button_controller_.reset(new PowerButtonController(
 517       session_state_controller_.get()));
 518   AddShellObserver(session_state_controller_.get());
 519
 520   if (initially_hide_cursor_)
 521     cursor_manager_.ShowCursor(false);
 522
 523   // Cursor might have been hidden by somethign other than chrome.
 524   // Let the first mouse event show the cursor.
 525   env_filter_->set_cursor_hidden_by_filter(true);
 526 }
 527
 528 void Shell::AddEnvEventFilter(aura::EventFilter* filter) {
 529   AddPreTargetHandler(filter);
 530 }
 531
 532 void Shell::RemoveEnvEventFilter(aura::EventFilter* filter) {
 533   RemovePreTargetHandler(filter);
 534 }
 535
 536 void Shell::ShowContextMenu(const gfx::Point& location_in_screen) {
 537   // No context menus if user have not logged in.
 538   if (!delegate_->IsUserLoggedIn())
 539     return;
 540   // No context menus when screen is locked.
 541   if (IsScreenLocked())
 542     return;
 543
 544   aura::RootWindow* root =
 545       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 546   GetRootWindowController(root)->ShowContextMenu(location_in_screen);
 547 }
 548
 549 void Shell::ToggleAppList() {
 550   if (!app_list_controller_.get())
 551     app_list_controller_.reset(new internal::AppListController);
 552   app_list_controller_->SetVisible(!app_list_controller_->IsVisible());
 553 }
 554
 555 bool Shell::GetAppListTargetVisibility() const {
 556   return app_list_controller_.get() &&
 557       app_list_controller_->GetTargetVisibility();
 558 }
 559
 560 aura::Window* Shell::GetAppListWindow() {
 561   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 562 }
 563
 564 bool Shell::IsScreenLocked() const {
 565   return delegate_->IsScreenLocked();
 566 }
 567
 568 bool Shell::IsModalWindowOpen() const {
 569   if (simulate_modal_window_open_for_testing_)
 570     return true;
 571   const std::vector<aura::Window*> containers = GetAllContainers(
 572       internal::kShellWindowId_SystemModalContainer);
 573   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 574        cit != containers.end(); ++cit) {
 575     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 576          wit != (*cit)->children().end(); ++wit) {
 577       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 578           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 579         return true;
 580       }
 581     }
 582   }
 583   return false;
 584 }
 585
 586 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 587     views::Widget* widget) {
 588   if (CommandLine::ForCurrentProcess()->HasSwitch(
 589       switches::kAuraGoogleDialogFrames)) {
 590     return new internal::DialogFrameView;
 591   }
 592   // Use translucent-style window frames for dialogs.
 593   CustomFrameViewAsh* frame_view = new CustomFrameViewAsh;
 594   frame_view->Init(widget);
 595   return frame_view;
 596 }
 597
 598 void Shell::RotateFocus(Direction direction) {
 599   focus_cycler_->RotateFocus(
 600       direction == FORWARD ? internal::FocusCycler::FORWARD :
 601                              internal::FocusCycler::BACKWARD);
 602 }
 603
 604 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 605                                      const gfx::Insets& insets) {
 606   internal::MultiDisplayManager* display_manager =
 607       static_cast<internal::MultiDisplayManager*>(
 608           aura::Env::GetInstance()->display_manager());
 609   if (!display_manager->UpdateWorkAreaOfDisplayNearestWindow(contains, insets))
 610     return;
 611   FOR_EACH_OBSERVER(ShellObserver, observers_,
 612                     OnDisplayWorkAreaInsetsChanged());
 613 }
 614
 615 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 616   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 617   RootWindowControllerList controllers = GetAllRootWindowControllers();
 618   for (RootWindowControllerList::iterator iter = controllers.begin();
 619        iter != controllers.end(); ++iter)
 620     (*iter)->OnLoginStateChanged(status);
 621 }
 622
 623 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 624   RootWindowControllerList controllers = GetAllRootWindowControllers();
 625   for (RootWindowControllerList::iterator iter = controllers.begin();
 626        iter != controllers.end(); ++iter)
 627     (*iter)->UpdateAfterLoginStatusChange(status);
 628 }
 629
 630 void Shell::OnAppTerminating() {
 631   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 632 }
 633
 634 void Shell::OnLockStateChanged(bool locked) {
 635   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 636 }
 637
 638 void Shell::CreateLauncher() {
 639   GetPrimaryRootWindowController()->CreateLauncher();
 640 }
 641
 642 void Shell::ShowLauncher() {
 643   GetPrimaryRootWindowController()->ShowLauncher();
 644 }
 645
 646 void Shell::AddShellObserver(ShellObserver* observer) {
 647   observers_.AddObserver(observer);
 648 }
 649
 650 void Shell::RemoveShellObserver(ShellObserver* observer) {
 651   observers_.RemoveObserver(observer);
 652 }
 653
 654 void Shell::UpdateShelfVisibility() {
 655   RootWindowControllerList controllers = GetAllRootWindowControllers();
 656   for (RootWindowControllerList::iterator iter = controllers.begin();
 657        iter != controllers.end(); ++iter)
 658     if ((*iter)->shelf())
 659       (*iter)->UpdateShelfVisibility();
 660 }
 661
 662 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 663                                      aura::RootWindow* root_window) {
 664   GetRootWindowController(root_window)->SetShelfAutoHideBehavior(behavior);
 665 }
 666
 667 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 668     aura::RootWindow* root_window) const {
 669   return GetRootWindowController(root_window)->GetShelfAutoHideBehavior();
 670 }
 671
 672 bool Shell::IsShelfAutoHideMenuHideChecked(aura::RootWindow* root_window) {
 673   return GetRootWindowController(root_window)->GetShelfAutoHideBehavior() ==
 674       ash::SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS;
 675 }
 676
 677 ShelfAutoHideBehavior Shell::GetToggledShelfAutoHideBehavior(
 678     aura::RootWindow* root_window) {
 679   return GetRootWindowController(root_window)->
 680       GetToggledShelfAutoHideBehavior();
 681 }
 682
 683 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 684                               aura::RootWindow* root_window) {
 685   if (GetRootWindowController(root_window)->SetShelfAlignment(alignment))
 686     FOR_EACH_OBSERVER(ShellObserver, observers_, OnShelfAlignmentChanged());
 687 }
 688
 689 ShelfAlignment Shell::GetShelfAlignment(aura::RootWindow* root_window) {
 690   return GetRootWindowController(root_window)->GetShelfAlignment();
 691 }
 692
 693 void Shell::SetDimming(bool should_dim) {
 694   RootWindowControllerList controllers = GetAllRootWindowControllers();
 695   for (RootWindowControllerList::iterator iter = controllers.begin();
 696        iter != controllers.end(); ++iter)
 697     (*iter)->screen_dimmer()->SetDimming(should_dim);
 698 }
 699
 700 void Shell::CreateModalBackground(aura::Window* window) {
 701   if (!modality_filter_.get()) {
 702     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 703     AddEnvEventFilter(modality_filter_.get());
 704   }
 705   RootWindowControllerList controllers = GetAllRootWindowControllers();
 706   for (RootWindowControllerList::iterator iter = controllers.begin();
 707        iter != controllers.end(); ++iter)
 708     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 709 }
 710
 711 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 712   RootWindowControllerList controllers = GetAllRootWindowControllers();
 713   bool activated = false;
 714   for (RootWindowControllerList::iterator iter = controllers.begin();
 715        iter != controllers.end() && !activated; ++iter) {
 716     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 717         ActivateNextModalWindow();
 718   }
 719   if (!activated) {
 720     RemoveEnvEventFilter(modality_filter_.get());
 721     modality_filter_.reset();
 722     for (RootWindowControllerList::iterator iter = controllers.begin();
 723          iter != controllers.end(); ++iter)
 724       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 725   }
 726 }
 727
 728 WebNotificationTray* Shell::GetWebNotificationTray() {
 729   return GetPrimaryRootWindowController()->status_area_widget()->
 730       web_notification_tray();
 731 }
 732
 733 internal::StatusAreaWidget* Shell::status_area_widget() {
 734   return GetPrimaryRootWindowController()->status_area_widget();
 735 }
 736
 737 SystemTray* Shell::system_tray() {
 738   // We assume in throughout the code that this will not return NULL. If code
 739   // triggers this for valid reasons, it should test status_area_widget first.
 740   internal::StatusAreaWidget* status_area = status_area_widget();
 741   CHECK(status_area);
 742   return status_area->system_tray();
 743 }
 744
 745 void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
 746   root->set_focus_manager(focus_manager_.get());
 747   internal::RootWindowController* controller =
 748       new internal::RootWindowController(root);
 749   controller->CreateContainers();
 750   InitRootWindowController(controller);
 751   if (IsLauncherPerDisplayEnabled())
 752     controller->InitForPrimaryDisplay();
 753   controller->root_window_layout()->OnWindowResized();
 754   desktop_background_controller_->OnRootWindowAdded(root);
 755   high_contrast_controller_->OnRootWindowAdded(root);
 756   root->ShowRootWindow();
 757   // Activate new root for testing.
 758   active_root_window_ = root;
 759 }
 760
 761 void Shell::DoInitialWorkspaceAnimation() {
 762   return GetPrimaryRootWindowController()->workspace_controller()->
 763       DoInitialAnimation();
 764 }
 765
 766 void Shell::InitRootWindowController(
 767     internal::RootWindowController* controller) {
 768   aura::RootWindow* root_window = controller->root_window();
 769   DCHECK(activation_controller_.get());
 770   DCHECK(visibility_controller_.get());
 771   DCHECK(drag_drop_controller_.get());
 772   DCHECK(capture_controller_.get());
 773   DCHECK(window_cycle_controller_.get());
 774
 775   root_window->set_focus_manager(focus_manager_.get());
 776   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 777   aura::client::SetActivationClient(root_window, activation_controller_.get());
 778   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
 779   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
 780   aura::client::SetCaptureClient(root_window, capture_controller_.get());
 781   aura::client::SetScreenPositionClient(root_window,
 782                                         screen_position_controller_.get());
 783   aura::client::SetCursorClient(root_window, &cursor_manager_);
 784   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
 785   aura::client::SetEventClient(root_window, event_client_.get());
 786
 787   if (nested_dispatcher_controller_.get()) {
 788     aura::client::SetDispatcherClient(root_window,
 789                                       nested_dispatcher_controller_.get());
 790   }
 791   if (user_action_client_.get())
 792     aura::client::SetUserActionClient(root_window, user_action_client_.get());
 793
 794   root_window->SetCursor(ui::kCursorPointer);
 795   controller->InitLayoutManagers();
 796
 797   // TODO(oshima): Move the instance to RootWindowController when
 798   // the extended desktop is enabled by default.
 799   internal::AlwaysOnTopController* always_on_top_controller =
 800       new internal::AlwaysOnTopController;
 801   always_on_top_controller->SetAlwaysOnTopContainer(
 802       root_window->GetChildById(internal::kShellWindowId_AlwaysOnTopContainer));
 803   root_window->SetProperty(internal::kAlwaysOnTopControllerKey,
 804                            always_on_top_controller);
 805   if (GetPrimaryRootWindowController()->GetSystemModalLayoutManager(NULL)->
 806           has_modal_background()) {
 807     controller->GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 808   }
 809
 810   window_cycle_controller_->OnRootWindowAdded(root_window);
 811 }
 812
 813 ////////////////////////////////////////////////////////////////////////////////
 814 // Shell, private:
 815
 816 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
 817   RootWindowControllerList controllers = GetAllRootWindowControllers();
 818   for (RootWindowControllerList::iterator iter = controllers.begin();
 819        iter != controllers.end(); ++iter) {
 820     if ((*iter)->GetSystemModalLayoutManager(window)->
 821             CanWindowReceiveEvents(window)) {
 822       return true;
 823     }
 824   }
 825   return false;
 826 }
 827
 828 bool Shell::CanAcceptEvents() {
 829   return true;
 830 }
 831
 832 ui::EventTarget* Shell::GetParentTarget() {
 833   return NULL;
 834 }
 835
 836 }  // namespace ash