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