src/ash/shell.h

   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 #ifndef ASH_SHELL_H_
   6 #define ASH_SHELL_H_
   7
   8 #include <utility>
   9 #include <vector>
  10
  11 #include "ash/ash_export.h"
  12 #include "ash/metrics/user_metrics_recorder.h"
  13 #include "ash/shelf/shelf_types.h"
  14 #include "ash/system/user/login_status.h"
  15 #include "ash/wm/system_modal_container_event_filter_delegate.h"
  16 #include "base/basictypes.h"
  17 #include "base/compiler_specific.h"
  18 #include "base/gtest_prod_util.h"
  19 #include "base/memory/scoped_ptr.h"
  20 #include "base/memory/weak_ptr.h"
  21 #include "base/observer_list.h"
  22 #include "ui/aura/client/activation_change_observer.h"
  23 #include "ui/aura/window.h"
  24 #include "ui/base/ui_base_types.h"
  25 #include "ui/events/event_target.h"
  26 #include "ui/gfx/insets.h"
  27 #include "ui/gfx/screen.h"
  28 #include "ui/gfx/size.h"
  29 #include "ui/views/corewm/cursor_manager.h"
  30
  31 class CommandLine;
  32
  33 namespace app_list {
  34 class AppListView;
  35 }
  36 namespace aura {
  37 class EventFilter;
  38 class RootWindow;
  39 class Window;
  40 namespace client {
  41 class ActivationClient;
  42 class FocusClient;
  43 class UserActionClient;
  44 }
  45 }
  46 namespace chromeos {
  47 class OutputConfigurator;
  48 }
  49
  50 namespace gfx {
  51 class ImageSkia;
  52 class Point;
  53 class Rect;
  54 }
  55
  56 namespace keyboard {
  57 class KeyboardController;
  58 }
  59
  60 namespace ui {
  61 class Layer;
  62 }
  63 namespace views {
  64 class NonClientFrameView;
  65 class Widget;
  66 namespace corewm {
  67 class CompoundEventFilter;
  68 class InputMethodEventFilter;
  69 class ShadowController;
  70 class TooltipController;
  71 class VisibilityController;
  72 class WindowModalityController;
  73 }
  74 }
  75
  76 namespace ash {
  77
  78 class AcceleratorController;
  79 class AccessibilityDelegate;
  80 class AshNativeCursorManager;
  81 class AutoclickController;
  82 class CapsLockDelegate;
  83 class DesktopBackgroundController;
  84 class DisplayController;
  85 class FirstRunHelper;
  86 class GPUSupport;
  87 class HighContrastController;
  88 class LockStateController;
  89 class MagnificationController;
  90 class MediaDelegate;
  91 class MruWindowTracker;
  92 class NestedDispatcherController;
  93 class NewWindowDelegate;
  94 class PartialMagnificationController;
  95 class PowerButtonController;
  96 class WindowTreeHostFactory;
  97 class ScreenAsh;
  98 class SessionStateDelegate;
  99 class Shelf;
 100 class ShelfDelegate;
 101 class ShelfItemDelegateManager;
 102 class ShelfModel;
 103 class ShellDelegate;
 104 class ShellObserver;
 105 class StickyKeysController;
 106 class SystemTray;
 107 class SystemTrayDelegate;
 108 class SystemTrayNotifier;
 109 class ToplevelWindowEventHandler;
 110 class UserActivityDetector;
 111 class UserWallpaperDelegate;
 112 class VideoDetector;
 113 class WebNotificationTray;
 114 class WindowCycleController;
 115 class WindowPositioner;
 116 class WindowSelectorController;
 117
 118 namespace internal {
 119 class AcceleratorFilter;
 120 class AppListController;
 121 class CaptureController;
 122 class DisplayChangeObserver;
 123 class DisplayErrorObserver;
 124 class DisplayManager;
 125 class DragDropController;
 126 class EventClientImpl;
 127 class EventRewriterEventFilter;
 128 class EventTransformationHandler;
 129 class FocusCycler;
 130 class KeyboardUMAEventFilter;
 131 class LocaleNotificationController;
 132 class MouseCursorEventFilter;
 133 class OutputConfiguratorAnimation;
 134 class OverlayEventFilter;
 135 class PowerEventObserver;
 136 class ProjectingObserver;
 137 class ResizeShadowController;
 138 class ResolutionNotificationController;
 139 class RootWindowController;
 140 class ScopedTargetRootWindow;
 141 class ScreenPositionController;
 142 class ShelfWindowWatcher;
 143 class SlowAnimationEventFilter;
 144 class StatusAreaWidget;
 145 class SystemGestureEventFilter;
 146 class SystemModalContainerEventFilter;
 147 class TouchObserverHUD;
 148 class UserActivityNotifier;
 149 class VideoActivityNotifier;
 150 }
 151
 152 namespace shell {
 153 class WindowWatcher;
 154 }
 155
 156 namespace test {
 157 class ShellTestApi;
 158 }
 159
 160 // Shell is a singleton object that presents the Shell API and implements the
 161 // RootWindow's delegate interface.
 162 //
 163 // Upon creation, the Shell sets itself as the RootWindow's delegate, which
 164 // takes ownership of the Shell.
 165 class ASH_EXPORT Shell
 166     : public internal::SystemModalContainerEventFilterDelegate,
 167       public ui::EventTarget,
 168       public aura::client::ActivationChangeObserver {
 169  public:
 170   typedef std::vector<internal::RootWindowController*> RootWindowControllerList;
 171
 172   enum Direction {
 173     FORWARD,
 174     BACKWARD
 175   };
 176
 177   // A shell must be explicitly created so that it can call |Init()| with the
 178   // delegate set. |delegate| can be NULL (if not required for initialization).
 179   // Takes ownership of |delegate|.
 180   static Shell* CreateInstance(ShellDelegate* delegate);
 181
 182   // Should never be called before |CreateInstance()|.
 183   static Shell* GetInstance();
 184
 185   // Returns true if the ash shell has been instantiated.
 186   static bool HasInstance();
 187
 188   static void DeleteInstance();
 189
 190   // Returns the root window controller for the primary root window.
 191   // TODO(oshima): move this to |RootWindowController|
 192   static internal::RootWindowController* GetPrimaryRootWindowController();
 193
 194   // Returns all root window controllers.
 195   // TODO(oshima): move this to |RootWindowController|
 196   static RootWindowControllerList GetAllRootWindowControllers();
 197
 198   // Returns the primary root Window. The primary root Window is the one that
 199   // has a launcher.
 200   static aura::Window* GetPrimaryRootWindow();
 201
 202   // Returns a root Window when used as a target when creating a new window.
 203   // The root window of the active window is used in most cases, but can
 204   // be overridden by using ScopedTargetRootWindow().
 205   // If you want to get the root Window of the active window, just use
 206   // |wm::GetActiveWindow()->GetRootWindow()|.
 207   static aura::Window* GetTargetRootWindow();
 208
 209   // Returns the global Screen object that's always active in ash.
 210   static gfx::Screen* GetScreen();
 211
 212   // Returns all root windows.
 213   static aura::Window::Windows GetAllRootWindows();
 214
 215   static aura::Window* GetContainer(aura::Window* root_window,
 216                                     int container_id);
 217   static const aura::Window* GetContainer(const aura::Window* root_window,
 218                                           int container_id);
 219
 220   // Returns the list of containers that match |container_id| in
 221   // all root windows. If |priority_root| is given, the container
 222   // in the |priority_root| will be inserted at the top of the list.
 223   static std::vector<aura::Window*> GetContainersFromAllRootWindows(
 224       int container_id,
 225       aura::Window* priority_root);
 226
 227   void set_target_root_window(aura::Window* target_root_window) {
 228     target_root_window_ = target_root_window;
 229   }
 230
 231   // Shows the context menu for the background and launcher at
 232   // |location_in_screen| (in screen coordinates).
 233   void ShowContextMenu(const gfx::Point& location_in_screen,
 234                        ui::MenuSourceType source_type);
 235
 236   // Toggles the app list. |window| specifies in which display the app
 237   // list should be shown. If this is NULL, the active root window
 238   // will be used.
 239   void ToggleAppList(aura::Window* anchor);
 240
 241   // Returns app list target visibility.
 242   bool GetAppListTargetVisibility() const;
 243
 244   // Returns app list window or NULL if it is not visible.
 245   aura::Window* GetAppListWindow();
 246
 247   // Returns app list view or NULL if it is not visible.
 248   app_list::AppListView* GetAppListView();
 249
 250   // Returns true if a system-modal dialog window is currently open.
 251   bool IsSystemModalWindowOpen() const;
 252
 253   // For testing only: set simulation that a modal window is open
 254   void SimulateModalWindowOpenForTesting(bool modal_window_open) {
 255     simulate_modal_window_open_for_testing_ = modal_window_open;
 256   }
 257
 258   // Creates a default views::NonClientFrameView for use by windows in the
 259   // Ash environment.
 260   views::NonClientFrameView* CreateDefaultNonClientFrameView(
 261       views::Widget* widget);
 262
 263   // Rotates focus through containers that can receive focus.
 264   void RotateFocus(Direction direction);
 265
 266   // Sets the work area insets of the display that contains |window|,
 267   // this notifies observers too.
 268   // TODO(sky): this no longer really replicates what happens and is unreliable.
 269   // Remove this.
 270   void SetDisplayWorkAreaInsets(aura::Window* window,
 271                                 const gfx::Insets& insets);
 272
 273   // Called when the user logs in.
 274   void OnLoginStateChanged(user::LoginStatus status);
 275
 276   // Called after the logged-in user's profile is ready.
 277   void OnLoginUserProfilePrepared();
 278
 279   // Called when the login status changes.
 280   // TODO(oshima): Investigate if we can merge this and |OnLoginStateChanged|.
 281   void UpdateAfterLoginStatusChange(user::LoginStatus status);
 282
 283   // Called when the application is exiting.
 284   void OnAppTerminating();
 285
 286   // Called when the screen is locked (after the lock window is visible) or
 287   // unlocked.
 288   void OnLockStateChanged(bool locked);
 289
 290   // Called when a casting session is started or stopped.
 291   void OnCastingSessionStartedOrStopped(bool started);
 292
 293   // Initializes |shelf_|.  Does nothing if it's already initialized.
 294   void CreateShelf();
 295
 296   // Creates a virtual keyboard. Deletes the old virtual keyboard if it already
 297   // exists.
 298   void CreateKeyboard();
 299
 300   // Deactivates the virtual keyboard.
 301   void DeactivateKeyboard();
 302
 303   // Show shelf view if it was created hidden (before session has started).
 304   void ShowShelf();
 305
 306   // Adds/removes observer.
 307   void AddShellObserver(ShellObserver* observer);
 308   void RemoveShellObserver(ShellObserver* observer);
 309
 310   keyboard::KeyboardController* keyboard_controller() {
 311     return keyboard_controller_.get();
 312   }
 313
 314   AcceleratorController* accelerator_controller() {
 315     return accelerator_controller_.get();
 316   }
 317
 318   internal::DisplayManager* display_manager() {
 319     return display_manager_.get();
 320   }
 321   views::corewm::InputMethodEventFilter* input_method_filter() {
 322     return input_method_filter_.get();
 323   }
 324   views::corewm::CompoundEventFilter* env_filter() {
 325     return env_filter_.get();
 326   }
 327   views::corewm::TooltipController* tooltip_controller() {
 328     return tooltip_controller_.get();
 329   }
 330   internal::OverlayEventFilter* overlay_filter() {
 331     return overlay_filter_.get();
 332   }
 333   DesktopBackgroundController* desktop_background_controller() {
 334     return desktop_background_controller_.get();
 335   }
 336   PowerButtonController* power_button_controller() {
 337     return power_button_controller_.get();
 338   }
 339   LockStateController* lock_state_controller() {
 340     return lock_state_controller_.get();
 341   }
 342   MruWindowTracker* mru_window_tracker() {
 343     return mru_window_tracker_.get();
 344   }
 345   UserActivityDetector* user_activity_detector() {
 346     return user_activity_detector_.get();
 347   }
 348   VideoDetector* video_detector() {
 349     return video_detector_.get();
 350   }
 351   WindowCycleController* window_cycle_controller() {
 352     return window_cycle_controller_.get();
 353   }
 354   WindowSelectorController* window_selector_controller() {
 355     return window_selector_controller_.get();
 356   }
 357   internal::FocusCycler* focus_cycler() {
 358     return focus_cycler_.get();
 359   }
 360   DisplayController* display_controller() {
 361     return display_controller_.get();
 362   }
 363   internal::MouseCursorEventFilter* mouse_cursor_filter() {
 364     return mouse_cursor_filter_.get();
 365   }
 366   internal::EventTransformationHandler* event_transformation_handler() {
 367     return event_transformation_handler_.get();
 368   }
 369   views::corewm::CursorManager* cursor_manager() { return &cursor_manager_; }
 370
 371   ShellDelegate* delegate() { return delegate_.get(); }
 372
 373   UserWallpaperDelegate* user_wallpaper_delegate() {
 374     return user_wallpaper_delegate_.get();
 375   }
 376
 377   CapsLockDelegate* caps_lock_delegate() {
 378     return caps_lock_delegate_.get();
 379   }
 380
 381   SessionStateDelegate* session_state_delegate() {
 382     return session_state_delegate_.get();
 383   }
 384
 385   AccessibilityDelegate* accessibility_delegate() {
 386     return accessibility_delegate_.get();
 387   }
 388
 389   NewWindowDelegate* new_window_delegate() {
 390     return new_window_delegate_.get();
 391   }
 392
 393   MediaDelegate* media_delegate() {
 394     return media_delegate_.get();
 395   }
 396
 397   HighContrastController* high_contrast_controller() {
 398     return high_contrast_controller_.get();
 399   }
 400
 401   MagnificationController* magnification_controller() {
 402     return magnification_controller_.get();
 403   }
 404
 405   PartialMagnificationController* partial_magnification_controller() {
 406     return partial_magnification_controller_.get();
 407   }
 408
 409   AutoclickController* autoclick_controller() {
 410     return autoclick_controller_.get();
 411   }
 412
 413   aura::client::ActivationClient* activation_client() {
 414     return activation_client_;
 415   }
 416
 417   ShelfItemDelegateManager* shelf_item_delegate_manager() {
 418     return shelf_item_delegate_manager_.get();
 419   }
 420
 421   // Force the shelf to query for it's current visibility state.
 422   void UpdateShelfVisibility();
 423
 424   // TODO(oshima): Define an interface to access shelf/launcher
 425   // state, or just use Launcher.
 426
 427   // Sets/gets the shelf auto-hide behavior on |root_window|.
 428   void SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 429                                 aura::Window* root_window);
 430   ShelfAutoHideBehavior GetShelfAutoHideBehavior(
 431       aura::Window* root_window) const;
 432
 433   // Sets/gets shelf's alignment on |root_window|.
 434   void SetShelfAlignment(ShelfAlignment alignment,
 435                          aura::Window* root_window);
 436   ShelfAlignment GetShelfAlignment(aura::Window* root_window);
 437
 438   // Dims or undims the screen.
 439   void SetDimming(bool should_dim);
 440
 441   // Notifies |observers_| when entering or exiting fullscreen mode in
 442   // |root_window|.
 443   void NotifyFullscreenStateChange(bool is_fullscreen,
 444                                    aura::Window* root_window);
 445
 446   // Creates a modal background (a partially-opaque fullscreen window)
 447   // on all displays for |window|.
 448   void CreateModalBackground(aura::Window* window);
 449
 450   // Called when a modal window is removed. It will activate
 451   // another modal window if any, or remove modal screens
 452   // on all displays.
 453   void OnModalWindowRemoved(aura::Window* removed);
 454
 455   // Returns WebNotificationTray on the primary root window.
 456   WebNotificationTray* GetWebNotificationTray();
 457
 458   // Does the primary display have status area?
 459   bool HasPrimaryStatusArea();
 460
 461   // Returns the system tray on primary display.
 462   SystemTray* GetPrimarySystemTray();
 463
 464   SystemTrayDelegate* system_tray_delegate() {
 465     return system_tray_delegate_.get();
 466   }
 467
 468   SystemTrayNotifier* system_tray_notifier() {
 469     return system_tray_notifier_.get();
 470   }
 471
 472   static void set_initially_hide_cursor(bool hide) {
 473     initially_hide_cursor_ = hide;
 474   }
 475
 476   internal::ResizeShadowController* resize_shadow_controller() {
 477     return resize_shadow_controller_.get();
 478   }
 479
 480   // Made available for tests.
 481   views::corewm::ShadowController* shadow_controller() {
 482     return shadow_controller_.get();
 483   }
 484
 485   // Starts the animation that occurs on first login.
 486   void DoInitialWorkspaceAnimation();
 487
 488 #if defined(OS_CHROMEOS)
 489 #if defined(USE_X11)
 490   // TODO(oshima): Move these objects to DisplayController.
 491   chromeos::OutputConfigurator* output_configurator() {
 492     return output_configurator_.get();
 493   }
 494   internal::OutputConfiguratorAnimation* output_configurator_animation() {
 495     return output_configurator_animation_.get();
 496   }
 497   internal::DisplayErrorObserver* display_error_observer() {
 498     return display_error_observer_.get();
 499   }
 500 #endif  // defined(USE_X11)
 501
 502   internal::ResolutionNotificationController*
 503       resolution_notification_controller() {
 504     return resolution_notification_controller_.get();
 505   }
 506 #endif  // defined(OS_CHROMEOS)
 507
 508   WindowTreeHostFactory* window_tree_host_factory() {
 509     return window_tree_host_factory_.get();
 510   }
 511
 512   ShelfModel* shelf_model() {
 513     return shelf_model_.get();
 514   }
 515
 516   WindowPositioner* window_positioner() {
 517     return window_positioner_.get();
 518   }
 519
 520   // Returns the launcher delegate, creating if necesary.
 521   ShelfDelegate* GetShelfDelegate();
 522
 523   UserMetricsRecorder* metrics() {
 524     return user_metrics_recorder_.get();
 525   }
 526
 527   void SetTouchHudProjectionEnabled(bool enabled);
 528
 529   bool is_touch_hud_projection_enabled() const {
 530     return is_touch_hud_projection_enabled_;
 531   }
 532
 533 #if defined(OS_CHROMEOS)
 534   // Creates instance of FirstRunHelper. Caller is responsible for deleting
 535   // returned object.
 536   ash::FirstRunHelper* CreateFirstRunHelper();
 537
 538   // Toggles cursor compositing on/off. Native cursor is disabled when cursor
 539   // compositing is enabled, and vice versa.
 540   void SetCursorCompositingEnabled(bool enabled);
 541
 542   StickyKeysController* sticky_keys_controller() {
 543     return sticky_keys_controller_.get();
 544   }
 545 #endif  // defined(OS_CHROMEOS)
 546
 547   GPUSupport* gpu_support() { return gpu_support_.get(); }
 548
 549  private:
 550   FRIEND_TEST_ALL_PREFIXES(ExtendedDesktopTest, TestCursor);
 551   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, MouseEventCursors);
 552   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, TransformActivate);
 553   friend class internal::RootWindowController;
 554   friend class internal::ScopedTargetRootWindow;
 555   friend class test::ShellTestApi;
 556   friend class shell::WindowWatcher;
 557
 558   typedef std::pair<aura::Window*, gfx::Rect> WindowAndBoundsPair;
 559
 560   // Takes ownership of |delegate|.
 561   explicit Shell(ShellDelegate* delegate);
 562   virtual ~Shell();
 563
 564   void Init();
 565
 566   // Initializes virtual keyboard controller.
 567   void InitKeyboard();
 568
 569   // Initializes the root window so that it can host browser windows.
 570   void InitRootWindow(aura::Window* root_window);
 571
 572   // ash::internal::SystemModalContainerEventFilterDelegate overrides:
 573   virtual bool CanWindowReceiveEvents(aura::Window* window) OVERRIDE;
 574
 575   // Overridden from ui::EventTarget:
 576   virtual bool CanAcceptEvent(const ui::Event& event) OVERRIDE;
 577   virtual EventTarget* GetParentTarget() OVERRIDE;
 578   virtual scoped_ptr<ui::EventTargetIterator> GetChildIterator() const OVERRIDE;
 579   virtual ui::EventTargeter* GetEventTargeter() OVERRIDE;
 580   virtual void OnEvent(ui::Event* event) OVERRIDE;
 581
 582   // Overridden from aura::client::ActivationChangeObserver:
 583   virtual void OnWindowActivated(aura::Window* gained_active,
 584                                  aura::Window* lost_active) OVERRIDE;
 585
 586   static Shell* instance_;
 587
 588   // If set before the Shell is initialized, the mouse cursor will be hidden
 589   // when the screen is initially created.
 590   static bool initially_hide_cursor_;
 591
 592   // When no explicit target display/RootWindow is given, new windows are
 593   // created on |scoped_target_root_window_| , unless NULL in
 594   // which case they are created on |target_root_window_|.
 595   // |target_root_window_| never becomes NULL during the session.
 596   aura::Window* target_root_window_;
 597   aura::Window* scoped_target_root_window_;
 598
 599   // The CompoundEventFilter owned by aura::Env object.
 600   scoped_ptr<views::corewm::CompoundEventFilter> env_filter_;
 601
 602   std::vector<WindowAndBoundsPair> to_restore_;
 603
 604   scoped_ptr<UserMetricsRecorder> user_metrics_recorder_;
 605   scoped_ptr<keyboard::KeyboardController> keyboard_controller_;
 606   scoped_ptr<NestedDispatcherController> nested_dispatcher_controller_;
 607   scoped_ptr<AcceleratorController> accelerator_controller_;
 608   scoped_ptr<ShellDelegate> delegate_;
 609   scoped_ptr<SystemTrayDelegate> system_tray_delegate_;
 610   scoped_ptr<SystemTrayNotifier> system_tray_notifier_;
 611   scoped_ptr<UserWallpaperDelegate> user_wallpaper_delegate_;
 612   scoped_ptr<CapsLockDelegate> caps_lock_delegate_;
 613   scoped_ptr<SessionStateDelegate> session_state_delegate_;
 614   scoped_ptr<AccessibilityDelegate> accessibility_delegate_;
 615   scoped_ptr<NewWindowDelegate> new_window_delegate_;
 616   scoped_ptr<MediaDelegate> media_delegate_;
 617   scoped_ptr<ShelfDelegate> shelf_delegate_;
 618   scoped_ptr<ShelfItemDelegateManager> shelf_item_delegate_manager_;
 619   scoped_ptr<internal::ShelfWindowWatcher> shelf_window_watcher_;
 620
 621   scoped_ptr<ShelfModel> shelf_model_;
 622   scoped_ptr<WindowPositioner> window_positioner_;
 623
 624   scoped_ptr<internal::AppListController> app_list_controller_;
 625
 626   scoped_ptr<internal::DragDropController> drag_drop_controller_;
 627   scoped_ptr<internal::ResizeShadowController> resize_shadow_controller_;
 628   scoped_ptr<views::corewm::ShadowController> shadow_controller_;
 629   scoped_ptr<views::corewm::VisibilityController> visibility_controller_;
 630   scoped_ptr<views::corewm::WindowModalityController>
 631       window_modality_controller_;
 632   scoped_ptr<views::corewm::TooltipController> tooltip_controller_;
 633   scoped_ptr<DesktopBackgroundController> desktop_background_controller_;
 634   scoped_ptr<PowerButtonController> power_button_controller_;
 635   scoped_ptr<LockStateController> lock_state_controller_;
 636   scoped_ptr<MruWindowTracker> mru_window_tracker_;
 637   scoped_ptr<UserActivityDetector> user_activity_detector_;
 638   scoped_ptr<VideoDetector> video_detector_;
 639   scoped_ptr<WindowCycleController> window_cycle_controller_;
 640   scoped_ptr<WindowSelectorController> window_selector_controller_;
 641   scoped_ptr<internal::FocusCycler> focus_cycler_;
 642   scoped_ptr<DisplayController> display_controller_;
 643   scoped_ptr<HighContrastController> high_contrast_controller_;
 644   scoped_ptr<MagnificationController> magnification_controller_;
 645   scoped_ptr<PartialMagnificationController> partial_magnification_controller_;
 646   scoped_ptr<AutoclickController> autoclick_controller_;
 647   scoped_ptr<aura::client::FocusClient> focus_client_;
 648   scoped_ptr<aura::client::UserActionClient> user_action_client_;
 649   aura::client::ActivationClient* activation_client_;
 650   scoped_ptr<internal::MouseCursorEventFilter> mouse_cursor_filter_;
 651   scoped_ptr<internal::ScreenPositionController> screen_position_controller_;
 652   scoped_ptr<internal::SystemModalContainerEventFilter> modality_filter_;
 653   scoped_ptr<internal::EventClientImpl> event_client_;
 654   scoped_ptr<internal::EventTransformationHandler>
 655       event_transformation_handler_;
 656   scoped_ptr<WindowTreeHostFactory> window_tree_host_factory_;
 657
 658   // An event filter that pre-handles key events while the partial
 659   // screenshot UI or the keyboard overlay is active.
 660   scoped_ptr<internal::OverlayEventFilter> overlay_filter_;
 661
 662   // An event filter for logging keyboard-related metrics.
 663   scoped_ptr<internal::KeyboardUMAEventFilter> keyboard_metrics_filter_;
 664
 665   // An event filter which handles moving and resizing windows.
 666   scoped_ptr<ToplevelWindowEventHandler> toplevel_window_event_handler_;
 667
 668   // An event filter which handles system level gestures
 669   scoped_ptr<internal::SystemGestureEventFilter> system_gesture_filter_;
 670
 671   // An event filter that pre-handles global accelerators.
 672   scoped_ptr<internal::AcceleratorFilter> accelerator_filter_;
 673
 674   // An event filter that pre-handles all key events to send them to an IME.
 675   scoped_ptr<views::corewm::InputMethodEventFilter> input_method_filter_;
 676
 677   scoped_ptr<internal::DisplayManager> display_manager_;
 678   scoped_ptr<base::WeakPtrFactory<internal::DisplayManager> >
 679       weak_display_manager_factory_;
 680
 681   scoped_ptr<internal::LocaleNotificationController>
 682       locale_notification_controller_;
 683
 684 #if defined(OS_CHROMEOS)
 685   scoped_ptr<internal::PowerEventObserver> power_event_observer_;
 686   scoped_ptr<internal::UserActivityNotifier> user_activity_notifier_;
 687   scoped_ptr<internal::VideoActivityNotifier> video_activity_notifier_;
 688   scoped_ptr<StickyKeysController> sticky_keys_controller_;
 689   scoped_ptr<internal::ResolutionNotificationController>
 690       resolution_notification_controller_;
 691 #if defined(USE_X11)
 692   // Controls video output device state.
 693   scoped_ptr<chromeos::OutputConfigurator> output_configurator_;
 694   scoped_ptr<internal::OutputConfiguratorAnimation>
 695       output_configurator_animation_;
 696   scoped_ptr<internal::DisplayErrorObserver> display_error_observer_;
 697   scoped_ptr<internal::ProjectingObserver> projecting_observer_;
 698
 699   // Listens for output changes and updates the display manager.
 700   scoped_ptr<internal::DisplayChangeObserver> display_change_observer_;
 701
 702   scoped_ptr<ui::EventHandler> magnifier_key_scroll_handler_;
 703   scoped_ptr<ui::EventHandler> speech_feedback_handler_;
 704 #endif  // defined(USE_X11)
 705 #endif  // defined(OS_CHROMEOS)
 706
 707   // |native_cursor_manager_| is owned by |cursor_manager_|, but we keep a
 708   // pointer to vend to test code.
 709   AshNativeCursorManager* native_cursor_manager_;
 710   views::corewm::CursorManager cursor_manager_;
 711
 712   ObserverList<ShellObserver> observers_;
 713
 714   // For testing only: simulate that a modal window is open
 715   bool simulate_modal_window_open_for_testing_;
 716
 717   bool is_touch_hud_projection_enabled_;
 718
 719   // Injected content::GPUDataManager support.
 720   scoped_ptr<GPUSupport> gpu_support_;
 721
 722   DISALLOW_COPY_AND_ASSIGN(Shell);
 723 };
 724
 725 }  // namespace ash
 726
 727 #endif  // ASH_SHELL_H_