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