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 MaximizeModeWindowManager;
 133 class MouseCursorEventFilter;
 134 class OutputConfiguratorAnimation;
 135 class OverlayEventFilter;
 136 class PowerEventObserver;
 137 class ProjectingObserver;
 138 class ResizeShadowController;
 139 class ResolutionNotificationController;
 140 class RootWindowController;
 141 class ScopedTargetRootWindow;
 142 class ScreenPositionController;
 143 class ShelfWindowWatcher;
 144 class SlowAnimationEventFilter;
 145 class StatusAreaWidget;
 146 class SystemGestureEventFilter;
 147 class SystemModalContainerEventFilter;
 148 class TouchObserverHUD;
 149 class UserActivityNotifier;
 150 class VideoActivityNotifier;
 151 }
 152
 153 namespace shell {
 154 class WindowWatcher;
 155 }
 156
 157 namespace test {
 158 class ShellTestApi;
 159 }
 160
 161 // Shell is a singleton object that presents the Shell API and implements the
 162 // RootWindow's delegate interface.
 163 //
 164 // Upon creation, the Shell sets itself as the RootWindow's delegate, which
 165 // takes ownership of the Shell.
 166 class ASH_EXPORT Shell
 167     : public internal::SystemModalContainerEventFilterDelegate,
 168       public ui::EventTarget,
 169       public aura::client::ActivationChangeObserver {
 170  public:
 171   typedef std::vector<internal::RootWindowController*> RootWindowControllerList;
 172
 173   enum Direction {
 174     FORWARD,
 175     BACKWARD
 176   };
 177
 178   // A shell must be explicitly created so that it can call |Init()| with the
 179   // delegate set. |delegate| can be NULL (if not required for initialization).
 180   // Takes ownership of |delegate|.
 181   static Shell* CreateInstance(ShellDelegate* delegate);
 182
 183   // Should never be called before |CreateInstance()|.
 184   static Shell* GetInstance();
 185
 186   // Returns true if the ash shell has been instantiated.
 187   static bool HasInstance();
 188
 189   static void DeleteInstance();
 190
 191   // Returns the root window controller for the primary root window.
 192   // TODO(oshima): move this to |RootWindowController|
 193   static internal::RootWindowController* GetPrimaryRootWindowController();
 194
 195   // Returns all root window controllers.
 196   // TODO(oshima): move this to |RootWindowController|
 197   static RootWindowControllerList GetAllRootWindowControllers();
 198
 199   // Returns the primary root Window. The primary root Window is the one that
 200   // has a launcher.
 201   static aura::Window* GetPrimaryRootWindow();
 202
 203   // Returns a root Window when used as a target when creating a new window.
 204   // The root window of the active window is used in most cases, but can
 205   // be overridden by using ScopedTargetRootWindow().
 206   // If you want to get the root Window of the active window, just use
 207   // |wm::GetActiveWindow()->GetRootWindow()|.
 208   static aura::Window* GetTargetRootWindow();
 209
 210   // Returns the global Screen object that's always active in ash.
 211   static gfx::Screen* GetScreen();
 212
 213   // Returns all root windows.
 214   static aura::Window::Windows GetAllRootWindows();
 215
 216   static aura::Window* GetContainer(aura::Window* root_window,
 217                                     int container_id);
 218   static const aura::Window* GetContainer(const aura::Window* root_window,
 219                                           int container_id);
 220
 221   // Returns the list of containers that match |container_id| in
 222   // all root windows. If |priority_root| is given, the container
 223   // in the |priority_root| will be inserted at the top of the list.
 224   static std::vector<aura::Window*> GetContainersFromAllRootWindows(
 225       int container_id,
 226       aura::Window* priority_root);
 227
 228   void set_target_root_window(aura::Window* target_root_window) {
 229     target_root_window_ = target_root_window;
 230   }
 231
 232   // Shows the context menu for the background and launcher at
 233   // |location_in_screen| (in screen coordinates).
 234   void ShowContextMenu(const gfx::Point& location_in_screen,
 235                        ui::MenuSourceType source_type);
 236
 237   // Toggles the app list. |window| specifies in which display the app
 238   // list should be shown. If this is NULL, the active root window
 239   // will be used.
 240   void ToggleAppList(aura::Window* anchor);
 241
 242   // Returns app list target visibility.
 243   bool GetAppListTargetVisibility() const;
 244
 245   // Returns app list window or NULL if it is not visible.
 246   aura::Window* GetAppListWindow();
 247
 248   // Returns app list view or NULL if it is not visible.
 249   app_list::AppListView* GetAppListView();
 250
 251   // Returns true if a system-modal dialog window is currently open.
 252   bool IsSystemModalWindowOpen() const;
 253
 254   // For testing only: set simulation that a modal window is open
 255   void SimulateModalWindowOpenForTesting(bool modal_window_open) {
 256     simulate_modal_window_open_for_testing_ = modal_window_open;
 257   }
 258
 259   // Creates a default views::NonClientFrameView for use by windows in the
 260   // Ash environment.
 261   views::NonClientFrameView* CreateDefaultNonClientFrameView(
 262       views::Widget* widget);
 263
 264   // Rotates focus through containers that can receive focus.
 265   void RotateFocus(Direction direction);
 266
 267   // Sets the work area insets of the display that contains |window|,
 268   // this notifies observers too.
 269   // TODO(sky): this no longer really replicates what happens and is unreliable.
 270   // Remove this.
 271   void SetDisplayWorkAreaInsets(aura::Window* window,
 272                                 const gfx::Insets& insets);
 273
 274   // Called when the user logs in.
 275   void OnLoginStateChanged(user::LoginStatus status);
 276
 277   // Called after the logged-in user's profile is ready.
 278   void OnLoginUserProfilePrepared();
 279
 280   // Called when the login status changes.
 281   // TODO(oshima): Investigate if we can merge this and |OnLoginStateChanged|.
 282   void UpdateAfterLoginStatusChange(user::LoginStatus status);
 283
 284   // Called when the application is exiting.
 285   void OnAppTerminating();
 286
 287   // Called when the screen is locked (after the lock window is visible) or
 288   // unlocked.
 289   void OnLockStateChanged(bool locked);
 290
 291   // Called when a casting session is started or stopped.
 292   void OnCastingSessionStartedOrStopped(bool started);
 293
 294   // Initializes |shelf_|.  Does nothing if it's already initialized.
 295   void CreateShelf();
 296
 297   // Creates a virtual keyboard. Deletes the old virtual keyboard if it already
 298   // exists.
 299   void CreateKeyboard();
 300
 301   // Deactivates the virtual keyboard.
 302   void DeactivateKeyboard();
 303
 304   // Show shelf view if it was created hidden (before session has started).
 305   void ShowShelf();
 306
 307   // Adds/removes observer.
 308   void AddShellObserver(ShellObserver* observer);
 309   void RemoveShellObserver(ShellObserver* observer);
 310
 311   // Turn the always maximize mode window manager on or off.
 312   void EnableMaximizeModeWindowManager(bool enable);
 313
 314   keyboard::KeyboardController* keyboard_controller() {
 315     return keyboard_controller_.get();
 316   }
 317
 318   AcceleratorController* accelerator_controller() {
 319     return accelerator_controller_.get();
 320   }
 321
 322   internal::DisplayManager* display_manager() {
 323     return display_manager_.get();
 324   }
 325   views::corewm::InputMethodEventFilter* input_method_filter() {
 326     return input_method_filter_.get();
 327   }
 328   views::corewm::CompoundEventFilter* env_filter() {
 329     return env_filter_.get();
 330   }
 331   views::corewm::TooltipController* tooltip_controller() {
 332     return tooltip_controller_.get();
 333   }
 334   internal::OverlayEventFilter* overlay_filter() {
 335     return overlay_filter_.get();
 336   }
 337   DesktopBackgroundController* desktop_background_controller() {
 338     return desktop_background_controller_.get();
 339   }
 340   PowerButtonController* power_button_controller() {
 341     return power_button_controller_.get();
 342   }
 343   LockStateController* lock_state_controller() {
 344     return lock_state_controller_.get();
 345   }
 346   MruWindowTracker* mru_window_tracker() {
 347     return mru_window_tracker_.get();
 348   }
 349   UserActivityDetector* user_activity_detector() {
 350     return user_activity_detector_.get();
 351   }
 352   VideoDetector* video_detector() {
 353     return video_detector_.get();
 354   }
 355   WindowCycleController* window_cycle_controller() {
 356     return window_cycle_controller_.get();
 357   }
 358   WindowSelectorController* window_selector_controller() {
 359     return window_selector_controller_.get();
 360   }
 361   internal::FocusCycler* focus_cycler() {
 362     return focus_cycler_.get();
 363   }
 364   DisplayController* display_controller() {
 365     return display_controller_.get();
 366   }
 367   internal::MouseCursorEventFilter* mouse_cursor_filter() {
 368     return mouse_cursor_filter_.get();
 369   }
 370   internal::EventTransformationHandler* event_transformation_handler() {
 371     return event_transformation_handler_.get();
 372   }
 373   views::corewm::CursorManager* cursor_manager() { return &cursor_manager_; }
 374
 375   ShellDelegate* delegate() { return delegate_.get(); }
 376
 377   UserWallpaperDelegate* user_wallpaper_delegate() {
 378     return user_wallpaper_delegate_.get();
 379   }
 380
 381   CapsLockDelegate* caps_lock_delegate() {
 382     return caps_lock_delegate_.get();
 383   }
 384
 385   SessionStateDelegate* session_state_delegate() {
 386     return session_state_delegate_.get();
 387   }
 388
 389   AccessibilityDelegate* accessibility_delegate() {
 390     return accessibility_delegate_.get();
 391   }
 392
 393   NewWindowDelegate* new_window_delegate() {
 394     return new_window_delegate_.get();
 395   }
 396
 397   MediaDelegate* media_delegate() {
 398     return media_delegate_.get();
 399   }
 400
 401   HighContrastController* high_contrast_controller() {
 402     return high_contrast_controller_.get();
 403   }
 404
 405   MagnificationController* magnification_controller() {
 406     return magnification_controller_.get();
 407   }
 408
 409   PartialMagnificationController* partial_magnification_controller() {
 410     return partial_magnification_controller_.get();
 411   }
 412
 413   AutoclickController* autoclick_controller() {
 414     return autoclick_controller_.get();
 415   }
 416
 417   aura::client::ActivationClient* activation_client() {
 418     return activation_client_;
 419   }
 420
 421   ShelfItemDelegateManager* shelf_item_delegate_manager() {
 422     return shelf_item_delegate_manager_.get();
 423   }
 424
 425   // Force the shelf to query for it's current visibility state.
 426   void UpdateShelfVisibility();
 427
 428   // TODO(oshima): Define an interface to access shelf/launcher
 429   // state, or just use Launcher.
 430
 431   // Sets/gets the shelf auto-hide behavior on |root_window|.
 432   void SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 433                                 aura::Window* root_window);
 434   ShelfAutoHideBehavior GetShelfAutoHideBehavior(
 435       aura::Window* root_window) const;
 436
 437   // Sets/gets shelf's alignment on |root_window|.
 438   void SetShelfAlignment(ShelfAlignment alignment,
 439                          aura::Window* root_window);
 440   ShelfAlignment GetShelfAlignment(aura::Window* root_window);
 441
 442   // Dims or undims the screen.
 443   void SetDimming(bool should_dim);
 444
 445   // Notifies |observers_| when entering or exiting fullscreen mode in
 446   // |root_window|.
 447   void NotifyFullscreenStateChange(bool is_fullscreen,
 448                                    aura::Window* root_window);
 449
 450   // Creates a modal background (a partially-opaque fullscreen window)
 451   // on all displays for |window|.
 452   void CreateModalBackground(aura::Window* window);
 453
 454   // Called when a modal window is removed. It will activate
 455   // another modal window if any, or remove modal screens
 456   // on all displays.
 457   void OnModalWindowRemoved(aura::Window* removed);
 458
 459   // Returns WebNotificationTray on the primary root window.
 460   WebNotificationTray* GetWebNotificationTray();
 461
 462   // Does the primary display have status area?
 463   bool HasPrimaryStatusArea();
 464
 465   // Returns the system tray on primary display.
 466   SystemTray* GetPrimarySystemTray();
 467
 468   SystemTrayDelegate* system_tray_delegate() {
 469     return system_tray_delegate_.get();
 470   }
 471
 472   SystemTrayNotifier* system_tray_notifier() {
 473     return system_tray_notifier_.get();
 474   }
 475
 476   static void set_initially_hide_cursor(bool hide) {
 477     initially_hide_cursor_ = hide;
 478   }
 479
 480   internal::ResizeShadowController* resize_shadow_controller() {
 481     return resize_shadow_controller_.get();
 482   }
 483
 484   // Made available for tests.
 485   views::corewm::ShadowController* shadow_controller() {
 486     return shadow_controller_.get();
 487   }
 488
 489   // Starts the animation that occurs on first login.
 490   void DoInitialWorkspaceAnimation();
 491
 492 #if defined(OS_CHROMEOS)
 493 #if defined(USE_X11)
 494   // TODO(oshima): Move these objects to DisplayController.
 495   chromeos::OutputConfigurator* output_configurator() {
 496     return output_configurator_.get();
 497   }
 498   internal::OutputConfiguratorAnimation* output_configurator_animation() {
 499     return output_configurator_animation_.get();
 500   }
 501   internal::DisplayErrorObserver* display_error_observer() {
 502     return display_error_observer_.get();
 503   }
 504 #endif  // defined(USE_X11)
 505
 506   internal::ResolutionNotificationController*
 507       resolution_notification_controller() {
 508     return resolution_notification_controller_.get();
 509   }
 510 #endif  // defined(OS_CHROMEOS)
 511
 512   WindowTreeHostFactory* window_tree_host_factory() {
 513     return window_tree_host_factory_.get();
 514   }
 515
 516   ShelfModel* shelf_model() {
 517     return shelf_model_.get();
 518   }
 519
 520   WindowPositioner* window_positioner() {
 521     return window_positioner_.get();
 522   }
 523
 524   // Returns the launcher delegate, creating if necesary.
 525   ShelfDelegate* GetShelfDelegate();
 526
 527   UserMetricsRecorder* metrics() {
 528     return user_metrics_recorder_.get();
 529   }
 530
 531   void SetTouchHudProjectionEnabled(bool enabled);
 532
 533   bool is_touch_hud_projection_enabled() const {
 534     return is_touch_hud_projection_enabled_;
 535   }
 536
 537 #if defined(OS_CHROMEOS)
 538   // Creates instance of FirstRunHelper. Caller is responsible for deleting
 539   // returned object.
 540   ash::FirstRunHelper* CreateFirstRunHelper();
 541
 542   // Toggles cursor compositing on/off. Native cursor is disabled when cursor
 543   // compositing is enabled, and vice versa.
 544   void SetCursorCompositingEnabled(bool enabled);
 545
 546   StickyKeysController* sticky_keys_controller() {
 547     return sticky_keys_controller_.get();
 548   }
 549 #endif  // defined(OS_CHROMEOS)
 550
 551   GPUSupport* gpu_support() { return gpu_support_.get(); }
 552
 553  private:
 554   FRIEND_TEST_ALL_PREFIXES(ExtendedDesktopTest, TestCursor);
 555   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, MouseEventCursors);
 556   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, TransformActivate);
 557   friend class internal::RootWindowController;
 558   friend class internal::ScopedTargetRootWindow;
 559   friend class test::ShellTestApi;
 560   friend class shell::WindowWatcher;
 561
 562   typedef std::pair<aura::Window*, gfx::Rect> WindowAndBoundsPair;
 563
 564   // Takes ownership of |delegate|.
 565   explicit Shell(ShellDelegate* delegate);
 566   virtual ~Shell();
 567
 568   void Init();
 569
 570   // Initializes virtual keyboard controller.
 571   void InitKeyboard();
 572
 573   // Initializes the root window so that it can host browser windows.
 574   void InitRootWindow(aura::Window* root_window);
 575
 576   // ash::internal::SystemModalContainerEventFilterDelegate overrides:
 577   virtual bool CanWindowReceiveEvents(aura::Window* window) OVERRIDE;
 578
 579   // Overridden from ui::EventTarget:
 580   virtual bool CanAcceptEvent(const ui::Event& event) OVERRIDE;
 581   virtual EventTarget* GetParentTarget() OVERRIDE;
 582   virtual scoped_ptr<ui::EventTargetIterator> GetChildIterator() const OVERRIDE;
 583   virtual ui::EventTargeter* GetEventTargeter() OVERRIDE;
 584   virtual void OnEvent(ui::Event* event) OVERRIDE;
 585
 586   // Overridden from aura::client::ActivationChangeObserver:
 587   virtual void OnWindowActivated(aura::Window* gained_active,
 588                                  aura::Window* lost_active) OVERRIDE;
 589
 590   static Shell* instance_;
 591
 592   // If set before the Shell is initialized, the mouse cursor will be hidden
 593   // when the screen is initially created.
 594   static bool initially_hide_cursor_;
 595
 596   // When no explicit target display/RootWindow is given, new windows are
 597   // created on |scoped_target_root_window_| , unless NULL in
 598   // which case they are created on |target_root_window_|.
 599   // |target_root_window_| never becomes NULL during the session.
 600   aura::Window* target_root_window_;
 601   aura::Window* scoped_target_root_window_;
 602
 603   // The CompoundEventFilter owned by aura::Env object.
 604   scoped_ptr<views::corewm::CompoundEventFilter> env_filter_;
 605
 606   std::vector<WindowAndBoundsPair> to_restore_;
 607
 608   scoped_ptr<UserMetricsRecorder> user_metrics_recorder_;
 609   scoped_ptr<keyboard::KeyboardController> keyboard_controller_;
 610   scoped_ptr<NestedDispatcherController> nested_dispatcher_controller_;
 611   scoped_ptr<AcceleratorController> accelerator_controller_;
 612   scoped_ptr<ShellDelegate> delegate_;
 613   scoped_ptr<SystemTrayDelegate> system_tray_delegate_;
 614   scoped_ptr<SystemTrayNotifier> system_tray_notifier_;
 615   scoped_ptr<UserWallpaperDelegate> user_wallpaper_delegate_;
 616   scoped_ptr<CapsLockDelegate> caps_lock_delegate_;
 617   scoped_ptr<SessionStateDelegate> session_state_delegate_;
 618   scoped_ptr<AccessibilityDelegate> accessibility_delegate_;
 619   scoped_ptr<NewWindowDelegate> new_window_delegate_;
 620   scoped_ptr<MediaDelegate> media_delegate_;
 621   scoped_ptr<ShelfDelegate> shelf_delegate_;
 622   scoped_ptr<ShelfItemDelegateManager> shelf_item_delegate_manager_;
 623   scoped_ptr<internal::ShelfWindowWatcher> shelf_window_watcher_;
 624
 625   scoped_ptr<ShelfModel> shelf_model_;
 626   scoped_ptr<WindowPositioner> window_positioner_;
 627
 628   scoped_ptr<internal::AppListController> app_list_controller_;
 629
 630   scoped_ptr<internal::DragDropController> drag_drop_controller_;
 631   scoped_ptr<internal::ResizeShadowController> resize_shadow_controller_;
 632   scoped_ptr<views::corewm::ShadowController> shadow_controller_;
 633   scoped_ptr<views::corewm::VisibilityController> visibility_controller_;
 634   scoped_ptr<views::corewm::WindowModalityController>
 635       window_modality_controller_;
 636   scoped_ptr<views::corewm::TooltipController> tooltip_controller_;
 637   scoped_ptr<DesktopBackgroundController> desktop_background_controller_;
 638   scoped_ptr<PowerButtonController> power_button_controller_;
 639   scoped_ptr<LockStateController> lock_state_controller_;
 640   scoped_ptr<MruWindowTracker> mru_window_tracker_;
 641   scoped_ptr<UserActivityDetector> user_activity_detector_;
 642   scoped_ptr<VideoDetector> video_detector_;
 643   scoped_ptr<WindowCycleController> window_cycle_controller_;
 644   scoped_ptr<WindowSelectorController> window_selector_controller_;
 645   scoped_ptr<internal::FocusCycler> focus_cycler_;
 646   scoped_ptr<DisplayController> display_controller_;
 647   scoped_ptr<HighContrastController> high_contrast_controller_;
 648   scoped_ptr<MagnificationController> magnification_controller_;
 649   scoped_ptr<PartialMagnificationController> partial_magnification_controller_;
 650   scoped_ptr<AutoclickController> autoclick_controller_;
 651   scoped_ptr<aura::client::FocusClient> focus_client_;
 652   scoped_ptr<aura::client::UserActionClient> user_action_client_;
 653   aura::client::ActivationClient* activation_client_;
 654   scoped_ptr<internal::MouseCursorEventFilter> mouse_cursor_filter_;
 655   scoped_ptr<internal::ScreenPositionController> screen_position_controller_;
 656   scoped_ptr<internal::SystemModalContainerEventFilter> modality_filter_;
 657   scoped_ptr<internal::EventClientImpl> event_client_;
 658   scoped_ptr<internal::EventTransformationHandler>
 659       event_transformation_handler_;
 660   scoped_ptr<WindowTreeHostFactory> window_tree_host_factory_;
 661
 662   // An event filter that pre-handles key events while the partial
 663   // screenshot UI or the keyboard overlay is active.
 664   scoped_ptr<internal::OverlayEventFilter> overlay_filter_;
 665
 666   // An event filter for logging keyboard-related metrics.
 667   scoped_ptr<internal::KeyboardUMAEventFilter> keyboard_metrics_filter_;
 668
 669   // An event filter which handles moving and resizing windows.
 670   scoped_ptr<ToplevelWindowEventHandler> toplevel_window_event_handler_;
 671
 672   // An event filter which handles system level gestures
 673   scoped_ptr<internal::SystemGestureEventFilter> system_gesture_filter_;
 674
 675   // An event filter that pre-handles global accelerators.
 676   scoped_ptr<internal::AcceleratorFilter> accelerator_filter_;
 677
 678   // An event filter that pre-handles all key events to send them to an IME.
 679   scoped_ptr<views::corewm::InputMethodEventFilter> input_method_filter_;
 680
 681   scoped_ptr<internal::DisplayManager> display_manager_;
 682   scoped_ptr<base::WeakPtrFactory<internal::DisplayManager> >
 683       weak_display_manager_factory_;
 684
 685   scoped_ptr<internal::LocaleNotificationController>
 686       locale_notification_controller_;
 687
 688   // The maximized window manager (if enabled).
 689   scoped_ptr<internal::MaximizeModeWindowManager> maximize_mode_window_manager_;
 690
 691 #if defined(OS_CHROMEOS)
 692   scoped_ptr<internal::PowerEventObserver> power_event_observer_;
 693   scoped_ptr<internal::UserActivityNotifier> user_activity_notifier_;
 694   scoped_ptr<internal::VideoActivityNotifier> video_activity_notifier_;
 695   scoped_ptr<StickyKeysController> sticky_keys_controller_;
 696   scoped_ptr<internal::ResolutionNotificationController>
 697       resolution_notification_controller_;
 698 #if defined(USE_X11)
 699   // Controls video output device state.
 700   scoped_ptr<chromeos::OutputConfigurator> output_configurator_;
 701   scoped_ptr<internal::OutputConfiguratorAnimation>
 702       output_configurator_animation_;
 703   scoped_ptr<internal::DisplayErrorObserver> display_error_observer_;
 704   scoped_ptr<internal::ProjectingObserver> projecting_observer_;
 705
 706   // Listens for output changes and updates the display manager.
 707   scoped_ptr<internal::DisplayChangeObserver> display_change_observer_;
 708
 709   scoped_ptr<ui::EventHandler> magnifier_key_scroll_handler_;
 710   scoped_ptr<ui::EventHandler> speech_feedback_handler_;
 711 #endif  // defined(USE_X11)
 712 #endif  // defined(OS_CHROMEOS)
 713
 714   // |native_cursor_manager_| is owned by |cursor_manager_|, but we keep a
 715   // pointer to vend to test code.
 716   AshNativeCursorManager* native_cursor_manager_;
 717   views::corewm::CursorManager cursor_manager_;
 718
 719   ObserverList<ShellObserver> observers_;
 720
 721   // For testing only: simulate that a modal window is open
 722   bool simulate_modal_window_open_for_testing_;
 723
 724   bool is_touch_hud_projection_enabled_;
 725
 726   // Injected content::GPUDataManager support.
 727   scoped_ptr<GPUSupport> gpu_support_;
 728
 729   DISALLOW_COPY_AND_ASSIGN(Shell);
 730 };
 731
 732 }  // namespace ash
 733
 734 #endif  // ASH_SHELL_H_