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/cursor_manager_chromeos.h"
  16 #include "ash/wm/system_modal_container_event_filter_delegate.h"
  17 #include "base/basictypes.h"
  18 #include "base/compiler_specific.h"
  19 #include "base/gtest_prod_util.h"
  20 #include "base/memory/scoped_ptr.h"
  21 #include "base/memory/weak_ptr.h"
  22 #include "base/observer_list.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/wm/core/cursor_manager.h"
  30 #include "ui/wm/public/activation_change_observer.h"
  31
  32 namespace app_list {
  33 class AppListView;
  34 }
  35 namespace aura {
  36 class EventFilter;
  37 class RootWindow;
  38 class Window;
  39 namespace client {
  40 class ActivationClient;
  41 class FocusClient;
  42 }
  43 }
  44
  45 namespace gfx {
  46 class ImageSkia;
  47 class Point;
  48 class Rect;
  49 }
  50
  51 namespace ui {
  52 class DisplayConfigurator;
  53 class Layer;
  54 class UserActivityPowerManagerNotifier;
  55 }
  56 namespace views {
  57 class NonClientFrameView;
  58 class Widget;
  59 namespace corewm {
  60 class TooltipController;
  61 }
  62 }
  63
  64 namespace wm {
  65 class AcceleratorFilter;
  66 class CompoundEventFilter;
  67 class InputMethodEventFilter;
  68 class NestedAcceleratorController;
  69 class ShadowController;
  70 class VisibilityController;
  71 class UserActivityDetector;
  72 class WindowModalityController;
  73 }
  74
  75 namespace ash {
  76
  77 class AcceleratorController;
  78 class AccelerometerController;
  79 class AccessibilityDelegate;
  80 class AppListController;
  81 class AshNativeCursorManager;
  82 class AutoclickController;
  83 class BluetoothNotificationController;
  84 class CaptureController;
  85 class DesktopBackgroundController;
  86 class DisplayChangeObserver;
  87 class DisplayConfiguratorAnimation;
  88 class DisplayController;
  89 class DisplayErrorObserver;
  90 class DisplayManager;
  91 class DragDropController;
  92 class EventClientImpl;
  93 class EventRewriterEventFilter;
  94 class EventTransformationHandler;
  95 class FirstRunHelper;
  96 class FocusCycler;
  97 class GPUSupport;
  98 class HighContrastController;
  99 class KeyboardUMAEventFilter;
 100 class LastWindowClosedLogoutReminder;
 101 class LocaleNotificationController;
 102 class LockStateController;
 103 class LogoutConfirmationController;
 104 class MagnificationController;
 105 class MaximizeModeController;
 106 class MaximizeModeWindowManager;
 107 class MediaDelegate;
 108 class MouseCursorEventFilter;
 109 class MruWindowTracker;
 110 class NewWindowDelegate;
 111 class OverlayEventFilter;
 112 class PartialMagnificationController;
 113 class PowerButtonController;
 114 class PowerEventObserver;
 115 class ProjectingObserver;
 116 class ResizeShadowController;
 117 class ResolutionNotificationController;
 118 class RootWindowController;
 119 class ScopedTargetRootWindow;
 120 class ScreenAsh;
 121 class ScreenPositionController;
 122 class SessionStateDelegate;
 123 class Shelf;
 124 class ShelfDelegate;
 125 class ShelfItemDelegateManager;
 126 class ShelfModel;
 127 class ShelfWindowWatcher;
 128 class ShellDelegate;
 129 struct ShellInitParams;
 130 class ShellObserver;
 131 class SlowAnimationEventFilter;
 132 class StatusAreaWidget;
 133 class StickyKeysController;
 134 class SystemGestureEventFilter;
 135 class SystemModalContainerEventFilter;
 136 class SystemTray;
 137 class SystemTrayDelegate;
 138 class SystemTrayNotifier;
 139 class ToplevelWindowEventHandler;
 140 class TouchTransformerController;
 141 class TouchObserverHUD;
 142 class UserActivityDetector;
 143 class UserWallpaperDelegate;
 144 class VirtualKeyboardController;
 145 class VideoActivityNotifier;
 146 class VideoDetector;
 147 class WebNotificationTray;
 148 class WindowCycleController;
 149 class WindowPositioner;
 150 class WindowSelectorController;
 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 : public SystemModalContainerEventFilterDelegate,
 166                          public ui::EventTarget,
 167                          public aura::client::ActivationChangeObserver {
 168  public:
 169   typedef std::vector<RootWindowController*> RootWindowControllerList;
 170
 171   enum Direction {
 172     FORWARD,
 173     BACKWARD
 174   };
 175
 176   // A shell must be explicitly created so that it can call |Init()| with the
 177   // delegate set. |delegate| can be NULL (if not required for initialization).
 178   // Takes ownership of |delegate|.
 179   static Shell* CreateInstance(const ShellInitParams& init_params);
 180
 181   // Should never be called before |CreateInstance()|.
 182   static Shell* GetInstance();
 183
 184   // Returns true if the ash shell has been instantiated.
 185   static bool HasInstance();
 186
 187   static void DeleteInstance();
 188
 189   // Returns the root window controller for the primary root window.
 190   // TODO(oshima): move this to |RootWindowController|
 191   static RootWindowController* GetPrimaryRootWindowController();
 192
 193   // Returns all root window controllers.
 194   // TODO(oshima): move this to |RootWindowController|
 195   static RootWindowControllerList GetAllRootWindowControllers();
 196
 197   // Returns the primary root Window. The primary root Window is the one that
 198   // has a launcher.
 199   static aura::Window* GetPrimaryRootWindow();
 200
 201   // Returns a root Window when used as a target when creating a new window.
 202   // The root window of the active window is used in most cases, but can
 203   // be overridden by using ScopedTargetRootWindow().
 204   // If you want to get the root Window of the active window, just use
 205   // |wm::GetActiveWindow()->GetRootWindow()|.
 206   static aura::Window* GetTargetRootWindow();
 207
 208   // Returns the global Screen object that's always active in ash.
 209   static gfx::Screen* GetScreen();
 210
 211   // Returns all root windows.
 212   static aura::Window::Windows GetAllRootWindows();
 213
 214   static aura::Window* GetContainer(aura::Window* root_window,
 215                                     int container_id);
 216   static const aura::Window* GetContainer(const aura::Window* root_window,
 217                                           int container_id);
 218
 219   // Returns the list of containers that match |container_id| in
 220   // all root windows. If |priority_root| is given, the container
 221   // in the |priority_root| will be inserted at the top of the list.
 222   static std::vector<aura::Window*> GetContainersFromAllRootWindows(
 223       int container_id,
 224       aura::Window* priority_root);
 225
 226   void set_target_root_window(aura::Window* target_root_window) {
 227     target_root_window_ = target_root_window;
 228   }
 229
 230   // Shows the context menu for the background and launcher at
 231   // |location_in_screen| (in screen coordinates).
 232   void ShowContextMenu(const gfx::Point& location_in_screen,
 233                        ui::MenuSourceType source_type);
 234
 235   // Shows the app list. |window| specifies in which display the app
 236   // list should be shown. If this is NULL, the active root window
 237   // will be used.
 238   void ShowAppList(aura::Window* anchor);
 239
 240   // Dismisses the app list.
 241   void DismissAppList();
 242
 243   // Shows the app list if it's not visible. Dismisses it otherwise.
 244   void ToggleAppList(aura::Window* anchor);
 245
 246   // Returns app list target visibility.
 247   bool GetAppListTargetVisibility() const;
 248
 249   // Returns app list window or NULL if it is not visible.
 250   aura::Window* GetAppListWindow();
 251
 252   // Returns app list view or NULL if it is not visible.
 253   app_list::AppListView* GetAppListView();
 254
 255   // Returns true if a system-modal dialog window is currently open.
 256   bool IsSystemModalWindowOpen() const;
 257
 258   // For testing only: set simulation that a modal window is open
 259   void SimulateModalWindowOpenForTesting(bool modal_window_open) {
 260     simulate_modal_window_open_for_testing_ = modal_window_open;
 261   }
 262
 263   // Creates a default views::NonClientFrameView for use by windows in the
 264   // Ash environment.
 265   views::NonClientFrameView* CreateDefaultNonClientFrameView(
 266       views::Widget* widget);
 267
 268   // Rotates focus through containers that can receive focus.
 269   void RotateFocus(Direction direction);
 270
 271   // Sets the work area insets of the display that contains |window|,
 272   // this notifies observers too.
 273   // TODO(sky): this no longer really replicates what happens and is unreliable.
 274   // Remove this.
 275   void SetDisplayWorkAreaInsets(aura::Window* window,
 276                                 const gfx::Insets& insets);
 277
 278   // Called when the user logs in.
 279   void OnLoginStateChanged(user::LoginStatus status);
 280
 281   // Called after the logged-in user's profile is ready.
 282   void OnLoginUserProfilePrepared();
 283
 284   // Called when the login status changes.
 285   // TODO(oshima): Investigate if we can merge this and |OnLoginStateChanged|.
 286   void UpdateAfterLoginStatusChange(user::LoginStatus status);
 287
 288   // Called when the application is exiting.
 289   void OnAppTerminating();
 290
 291   // Called when the screen is locked (after the lock window is visible) or
 292   // unlocked.
 293   void OnLockStateChanged(bool locked);
 294
 295   // Called when a casting session is started or stopped.
 296   void OnCastingSessionStartedOrStopped(bool started);
 297
 298   // Called when the overview mode is about to be started (before the windows
 299   // get re-arranged).
 300   void OnOverviewModeStarting();
 301
 302   // Called before the overview mode is ending (before the windows get arranged
 303   // to their final position).
 304   void OnOverviewModeEnding();
 305
 306   // Called after maximize mode has started, windows might still animate though.
 307   void OnMaximizeModeStarted();
 308
 309   // Called after maximize mode has ended, windows might still be returning to
 310   // their original position.
 311   void OnMaximizeModeEnded();
 312
 313   // Called when a root window is created.
 314   void OnRootWindowAdded(aura::Window* root_window);
 315
 316   // Initializes |shelf_|.  Does nothing if it's already initialized.
 317   void CreateShelf();
 318
 319   // Called when the shelf is created for |root_window|.
 320   void OnShelfCreatedForRootWindow(aura::Window* root_window);
 321
 322   // Creates a virtual keyboard. Deletes the old virtual keyboard if it already
 323   // exists.
 324   void CreateKeyboard();
 325
 326   // Deactivates the virtual keyboard.
 327   void DeactivateKeyboard();
 328
 329   // Show shelf view if it was created hidden (before session has started).
 330   void ShowShelf();
 331
 332   // Adds/removes observer.
 333   void AddShellObserver(ShellObserver* observer);
 334   void RemoveShellObserver(ShellObserver* observer);
 335
 336 #if defined(OS_CHROMEOS)
 337   // Test if MaximizeModeWindowManager is not enabled, and if
 338   // MaximizeModeController is not currently setting a display rotation. Or if
 339   // the |resolution_notification_controller_| is not showing its confirmation
 340   // dialog. If true then changes to display settings can be saved.
 341   bool ShouldSaveDisplaySettings();
 342 #endif
 343
 344   AcceleratorController* accelerator_controller() {
 345     return accelerator_controller_.get();
 346   }
 347
 348   DisplayManager* display_manager() { return display_manager_.get(); }
 349   ::wm::InputMethodEventFilter* input_method_filter() {
 350     return input_method_filter_.get();
 351   }
 352   ::wm::CompoundEventFilter* env_filter() {
 353     return env_filter_.get();
 354   }
 355   views::corewm::TooltipController* tooltip_controller() {
 356     return tooltip_controller_.get();
 357   }
 358   OverlayEventFilter* overlay_filter() { return overlay_filter_.get(); }
 359   DesktopBackgroundController* desktop_background_controller() {
 360     return desktop_background_controller_.get();
 361   }
 362   PowerButtonController* power_button_controller() {
 363     return power_button_controller_.get();
 364   }
 365   LockStateController* lock_state_controller() {
 366     return lock_state_controller_.get();
 367   }
 368   MruWindowTracker* mru_window_tracker() {
 369     return mru_window_tracker_.get();
 370   }
 371   ::wm::UserActivityDetector* user_activity_detector() {
 372     return user_activity_detector_.get();
 373   }
 374   VideoDetector* video_detector() {
 375     return video_detector_.get();
 376   }
 377   WindowCycleController* window_cycle_controller() {
 378     return window_cycle_controller_.get();
 379   }
 380   WindowSelectorController* window_selector_controller() {
 381     return window_selector_controller_.get();
 382   }
 383   FocusCycler* focus_cycler() { return focus_cycler_.get(); }
 384   DisplayController* display_controller() {
 385     return display_controller_.get();
 386   }
 387 #if defined(OS_CHROMEOS) && defined(USE_X11)
 388   TouchTransformerController* touch_transformer_controller() {
 389     return touch_transformer_controller_.get();
 390   }
 391 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 392   MouseCursorEventFilter* mouse_cursor_filter() {
 393     return mouse_cursor_filter_.get();
 394   }
 395   EventTransformationHandler* event_transformation_handler() {
 396     return event_transformation_handler_.get();
 397   }
 398   ::wm::CursorManager* cursor_manager() { return &cursor_manager_; }
 399
 400   ShellDelegate* delegate() { return delegate_.get(); }
 401
 402   UserWallpaperDelegate* user_wallpaper_delegate() {
 403     return user_wallpaper_delegate_.get();
 404   }
 405
 406   SessionStateDelegate* session_state_delegate() {
 407     return session_state_delegate_.get();
 408   }
 409
 410   AccessibilityDelegate* accessibility_delegate() {
 411     return accessibility_delegate_.get();
 412   }
 413
 414   NewWindowDelegate* new_window_delegate() {
 415     return new_window_delegate_.get();
 416   }
 417
 418   MediaDelegate* media_delegate() {
 419     return media_delegate_.get();
 420   }
 421
 422   HighContrastController* high_contrast_controller() {
 423     return high_contrast_controller_.get();
 424   }
 425
 426   MagnificationController* magnification_controller() {
 427     return magnification_controller_.get();
 428   }
 429
 430   PartialMagnificationController* partial_magnification_controller() {
 431     return partial_magnification_controller_.get();
 432   }
 433
 434   AutoclickController* autoclick_controller() {
 435     return autoclick_controller_.get();
 436   }
 437
 438   aura::client::ActivationClient* activation_client() {
 439     return activation_client_;
 440   }
 441
 442   ShelfItemDelegateManager* shelf_item_delegate_manager() {
 443     return shelf_item_delegate_manager_.get();
 444   }
 445
 446   // Force the shelf to query for it's current visibility state.
 447   void UpdateShelfVisibility();
 448
 449   // TODO(oshima): Define an interface to access shelf/launcher
 450   // state, or just use Launcher.
 451
 452   // Sets/gets the shelf auto-hide behavior on |root_window|.
 453   void SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 454                                 aura::Window* root_window);
 455   ShelfAutoHideBehavior GetShelfAutoHideBehavior(
 456       aura::Window* root_window) const;
 457
 458   // Sets/gets shelf's alignment on |root_window|.
 459   void SetShelfAlignment(ShelfAlignment alignment,
 460                          aura::Window* root_window);
 461   ShelfAlignment GetShelfAlignment(const aura::Window* root_window);
 462
 463   // Dims or undims the screen.
 464   void SetDimming(bool should_dim);
 465
 466   // Notifies |observers_| when entering or exiting fullscreen mode in
 467   // |root_window|.
 468   void NotifyFullscreenStateChange(bool is_fullscreen,
 469                                    aura::Window* root_window);
 470
 471   // Creates a modal background (a partially-opaque fullscreen window)
 472   // on all displays for |window|.
 473   void CreateModalBackground(aura::Window* window);
 474
 475   // Called when a modal window is removed. It will activate
 476   // another modal window if any, or remove modal screens
 477   // on all displays.
 478   void OnModalWindowRemoved(aura::Window* removed);
 479
 480   // Returns WebNotificationTray on the primary root window.
 481   WebNotificationTray* GetWebNotificationTray();
 482
 483   // Does the primary display have status area?
 484   bool HasPrimaryStatusArea();
 485
 486   // Returns the system tray on primary display.
 487   SystemTray* GetPrimarySystemTray();
 488
 489   SystemTrayDelegate* system_tray_delegate() {
 490     return system_tray_delegate_.get();
 491   }
 492
 493   SystemTrayNotifier* system_tray_notifier() {
 494     return system_tray_notifier_.get();
 495   }
 496
 497   static void set_initially_hide_cursor(bool hide) {
 498     initially_hide_cursor_ = hide;
 499   }
 500
 501   ResizeShadowController* resize_shadow_controller() {
 502     return resize_shadow_controller_.get();
 503   }
 504
 505   // Made available for tests.
 506   ::wm::ShadowController* shadow_controller() {
 507     return shadow_controller_.get();
 508   }
 509
 510   // Starts the animation that occurs on first login.
 511   void DoInitialWorkspaceAnimation();
 512
 513   AccelerometerController* accelerometer_controller() {
 514     return accelerometer_controller_.get();
 515   }
 516
 517   MaximizeModeController* maximize_mode_controller() {
 518     return maximize_mode_controller_.get();
 519   }
 520
 521 #if defined(OS_CHROMEOS)
 522   // TODO(oshima): Move these objects to DisplayController.
 523   ui::DisplayConfigurator* display_configurator() {
 524     return display_configurator_.get();
 525   }
 526   DisplayConfiguratorAnimation* display_configurator_animation() {
 527     return display_configurator_animation_.get();
 528   }
 529   DisplayErrorObserver* display_error_observer() {
 530     return display_error_observer_.get();
 531   }
 532
 533   ResolutionNotificationController* resolution_notification_controller() {
 534     return resolution_notification_controller_.get();
 535   }
 536
 537   LogoutConfirmationController* logout_confirmation_controller() {
 538     return logout_confirmation_controller_.get();
 539   }
 540 #endif  // defined(OS_CHROMEOS)
 541
 542   ShelfModel* shelf_model() {
 543     return shelf_model_.get();
 544   }
 545
 546   WindowPositioner* window_positioner() {
 547     return window_positioner_.get();
 548   }
 549
 550   // Returns the launcher delegate, creating if necesary.
 551   ShelfDelegate* GetShelfDelegate();
 552
 553   UserMetricsRecorder* metrics() {
 554     return user_metrics_recorder_.get();
 555   }
 556
 557   void SetTouchHudProjectionEnabled(bool enabled);
 558
 559   bool is_touch_hud_projection_enabled() const {
 560     return is_touch_hud_projection_enabled_;
 561   }
 562
 563 #if defined(OS_CHROMEOS)
 564   // Creates instance of FirstRunHelper. Caller is responsible for deleting
 565   // returned object.
 566   ash::FirstRunHelper* CreateFirstRunHelper();
 567
 568   // Toggles cursor compositing on/off. Native cursor is disabled when cursor
 569   // compositing is enabled, and vice versa.
 570   void SetCursorCompositingEnabled(bool enabled);
 571
 572   StickyKeysController* sticky_keys_controller() {
 573     return sticky_keys_controller_.get();
 574   }
 575 #endif  // defined(OS_CHROMEOS)
 576
 577   GPUSupport* gpu_support() { return gpu_support_.get(); }
 578
 579  private:
 580   FRIEND_TEST_ALL_PREFIXES(ExtendedDesktopTest, TestCursor);
 581   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, MouseEventCursors);
 582   FRIEND_TEST_ALL_PREFIXES(WindowManagerTest, TransformActivate);
 583   friend class RootWindowController;
 584   friend class ScopedTargetRootWindow;
 585   friend class test::ShellTestApi;
 586   friend class shell::WindowWatcher;
 587
 588   typedef std::pair<aura::Window*, gfx::Rect> WindowAndBoundsPair;
 589
 590   // Takes ownership of |delegate|.
 591   explicit Shell(ShellDelegate* delegate);
 592   ~Shell() override;
 593
 594   void Init(const ShellInitParams& init_params);
 595
 596   // Initializes virtual keyboard controller.
 597   void InitKeyboard();
 598
 599   // Initializes the root window so that it can host browser windows.
 600   void InitRootWindow(aura::Window* root_window);
 601
 602   // ash::SystemModalContainerEventFilterDelegate overrides:
 603   bool CanWindowReceiveEvents(aura::Window* window) override;
 604
 605   // Overridden from ui::EventTarget:
 606   bool CanAcceptEvent(const ui::Event& event) override;
 607   EventTarget* GetParentTarget() override;
 608   scoped_ptr<ui::EventTargetIterator> GetChildIterator() const override;
 609   ui::EventTargeter* GetEventTargeter() override;
 610   void OnEvent(ui::Event* event) override;
 611
 612   // Overridden from aura::client::ActivationChangeObserver:
 613   void OnWindowActivated(aura::Window* gained_active,
 614                          aura::Window* lost_active) override;
 615
 616   static Shell* instance_;
 617
 618   // If set before the Shell is initialized, the mouse cursor will be hidden
 619   // when the screen is initially created.
 620   static bool initially_hide_cursor_;
 621
 622   // When no explicit target display/RootWindow is given, new windows are
 623   // created on |scoped_target_root_window_| , unless NULL in
 624   // which case they are created on |target_root_window_|.
 625   // |target_root_window_| never becomes NULL during the session.
 626   aura::Window* target_root_window_;
 627   aura::Window* scoped_target_root_window_;
 628
 629   // The CompoundEventFilter owned by aura::Env object.
 630   scoped_ptr< ::wm::CompoundEventFilter> env_filter_;
 631
 632   std::vector<WindowAndBoundsPair> to_restore_;
 633
 634   scoped_ptr<UserMetricsRecorder> user_metrics_recorder_;
 635   scoped_ptr< ::wm::NestedAcceleratorController> nested_accelerator_controller_;
 636   scoped_ptr<AcceleratorController> accelerator_controller_;
 637   scoped_ptr<ShellDelegate> delegate_;
 638   scoped_ptr<SystemTrayDelegate> system_tray_delegate_;
 639   scoped_ptr<SystemTrayNotifier> system_tray_notifier_;
 640   scoped_ptr<UserWallpaperDelegate> user_wallpaper_delegate_;
 641   scoped_ptr<SessionStateDelegate> session_state_delegate_;
 642   scoped_ptr<AccessibilityDelegate> accessibility_delegate_;
 643   scoped_ptr<NewWindowDelegate> new_window_delegate_;
 644   scoped_ptr<MediaDelegate> media_delegate_;
 645   scoped_ptr<ShelfDelegate> shelf_delegate_;
 646   scoped_ptr<ShelfItemDelegateManager> shelf_item_delegate_manager_;
 647   scoped_ptr<ShelfWindowWatcher> shelf_window_watcher_;
 648
 649   scoped_ptr<ShelfModel> shelf_model_;
 650   scoped_ptr<WindowPositioner> window_positioner_;
 651
 652   scoped_ptr<AppListController> app_list_controller_;
 653
 654   scoped_ptr<DragDropController> drag_drop_controller_;
 655   scoped_ptr<ResizeShadowController> resize_shadow_controller_;
 656   scoped_ptr< ::wm::ShadowController> shadow_controller_;
 657   scoped_ptr< ::wm::VisibilityController> visibility_controller_;
 658   scoped_ptr< ::wm::WindowModalityController> window_modality_controller_;
 659   scoped_ptr<views::corewm::TooltipController> tooltip_controller_;
 660   scoped_ptr<DesktopBackgroundController> desktop_background_controller_;
 661   scoped_ptr<PowerButtonController> power_button_controller_;
 662   scoped_ptr<LockStateController> lock_state_controller_;
 663   scoped_ptr<MruWindowTracker> mru_window_tracker_;
 664   scoped_ptr< ::wm::UserActivityDetector> user_activity_detector_;
 665   scoped_ptr<VideoDetector> video_detector_;
 666   scoped_ptr<WindowCycleController> window_cycle_controller_;
 667   scoped_ptr<WindowSelectorController> window_selector_controller_;
 668   scoped_ptr<FocusCycler> focus_cycler_;
 669   scoped_ptr<DisplayController> display_controller_;
 670   scoped_ptr<HighContrastController> high_contrast_controller_;
 671   scoped_ptr<MagnificationController> magnification_controller_;
 672   scoped_ptr<PartialMagnificationController> partial_magnification_controller_;
 673   scoped_ptr<AutoclickController> autoclick_controller_;
 674   scoped_ptr<aura::client::FocusClient> focus_client_;
 675   aura::client::ActivationClient* activation_client_;
 676
 677   scoped_ptr<MouseCursorEventFilter> mouse_cursor_filter_;
 678   scoped_ptr<ScreenPositionController> screen_position_controller_;
 679   scoped_ptr<SystemModalContainerEventFilter> modality_filter_;
 680   scoped_ptr<EventClientImpl> event_client_;
 681   scoped_ptr<EventTransformationHandler> event_transformation_handler_;
 682
 683   // An event filter that pre-handles key events while the partial
 684   // screenshot UI or the keyboard overlay is active.
 685   scoped_ptr<OverlayEventFilter> overlay_filter_;
 686
 687   // An event filter for logging keyboard-related metrics.
 688   scoped_ptr<KeyboardUMAEventFilter> keyboard_metrics_filter_;
 689
 690   // An event filter which handles moving and resizing windows.
 691   scoped_ptr<ToplevelWindowEventHandler> toplevel_window_event_handler_;
 692
 693   // An event filter which handles system level gestures
 694   scoped_ptr<SystemGestureEventFilter> system_gesture_filter_;
 695
 696   // An event filter that pre-handles global accelerators.
 697   scoped_ptr< ::wm::AcceleratorFilter> accelerator_filter_;
 698
 699   // An event filter that pre-handles all key events to send them to an IME.
 700   scoped_ptr< ::wm::InputMethodEventFilter> input_method_filter_;
 701
 702   scoped_ptr<DisplayManager> display_manager_;
 703   scoped_ptr<base::WeakPtrFactory<DisplayManager> >
 704       weak_display_manager_factory_;
 705
 706   scoped_ptr<LocaleNotificationController> locale_notification_controller_;
 707
 708   scoped_ptr<AccelerometerController> accelerometer_controller_;
 709
 710 #if defined(OS_CHROMEOS)
 711   scoped_ptr<PowerEventObserver> power_event_observer_;
 712   scoped_ptr<ui::UserActivityPowerManagerNotifier> user_activity_notifier_;
 713   scoped_ptr<VideoActivityNotifier> video_activity_notifier_;
 714   scoped_ptr<StickyKeysController> sticky_keys_controller_;
 715   scoped_ptr<ResolutionNotificationController>
 716       resolution_notification_controller_;
 717   scoped_ptr<BluetoothNotificationController>
 718       bluetooth_notification_controller_;
 719   scoped_ptr<LogoutConfirmationController> logout_confirmation_controller_;
 720   scoped_ptr<LastWindowClosedLogoutReminder>
 721       last_window_closed_logout_reminder_;
 722   scoped_ptr<VirtualKeyboardController> virtual_keyboard_controller_;
 723   // Controls video output device state.
 724   scoped_ptr<ui::DisplayConfigurator> display_configurator_;
 725   scoped_ptr<DisplayConfiguratorAnimation> display_configurator_animation_;
 726   scoped_ptr<DisplayErrorObserver> display_error_observer_;
 727   scoped_ptr<ProjectingObserver> projecting_observer_;
 728
 729   // Listens for output changes and updates the display manager.
 730   scoped_ptr<DisplayChangeObserver> display_change_observer_;
 731
 732 #if defined(USE_X11)
 733   scoped_ptr<ui::EventHandler> magnifier_key_scroll_handler_;
 734   scoped_ptr<ui::EventHandler> speech_feedback_handler_;
 735   scoped_ptr<TouchTransformerController> touch_transformer_controller_;
 736 #endif  // defined(USE_X11)
 737 #endif  // defined(OS_CHROMEOS)
 738
 739   scoped_ptr<MaximizeModeController> maximize_mode_controller_;
 740
 741   // |native_cursor_manager_| is owned by |cursor_manager_|, but we keep a
 742   // pointer to vend to test code.
 743   AshNativeCursorManager* native_cursor_manager_;
 744
 745 // Cursor may be hidden on certain key events in ChromeOS, whereas we never hide
 746 // the cursor on Windows.
 747 #if defined(OS_CHROMEOS)
 748   CursorManager cursor_manager_;
 749 #else  // !defined(OS_CHROMEOS)
 750   ::wm::CursorManager cursor_manager_;
 751 #endif  // defined(OS_CHROMEOS)
 752
 753   ObserverList<ShellObserver> observers_;
 754
 755   // For testing only: simulate that a modal window is open
 756   bool simulate_modal_window_open_for_testing_;
 757
 758   bool is_touch_hud_projection_enabled_;
 759
 760   // Injected content::GPUDataManager support.
 761   scoped_ptr<GPUSupport> gpu_support_;
 762
 763   DISALLOW_COPY_AND_ASSIGN(Shell);
 764 };
 765
 766 }  // namespace ash
 767
 768 #endif  // ASH_SHELL_H_