ash/shell.cc

   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 #include "ash/shell.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "ash/accelerators/focus_manager_factory.h"
  11 #include "ash/ash_switches.h"
  12 #include "ash/caps_lock_delegate.h"
  13 #include "ash/desktop_background/desktop_background_controller.h"
  14 #include "ash/desktop_background/desktop_background_view.h"
  15 #include "ash/desktop_background/user_wallpaper_delegate.h"
  16 #include "ash/display/display_controller.h"
  17 #include "ash/display/display_manager.h"
  18 #include "ash/display/event_transformation_handler.h"
  19 #include "ash/display/mouse_cursor_event_filter.h"
  20 #include "ash/display/screen_position_controller.h"
  21 #include "ash/drag_drop/drag_drop_controller.h"
  22 #include "ash/focus_cycler.h"
  23 #include "ash/high_contrast/high_contrast_controller.h"
  24 #include "ash/host/root_window_host_factory.h"
  25 #include "ash/launcher/launcher_delegate.h"
  26 #include "ash/launcher/launcher_model.h"
  27 #include "ash/magnifier/magnification_controller.h"
  28 #include "ash/magnifier/partial_magnification_controller.h"
  29 #include "ash/root_window_controller.h"
  30 #include "ash/screen_ash.h"
  31 #include "ash/shell_delegate.h"
  32 #include "ash/shell_factory.h"
  33 #include "ash/shell_window_ids.h"
  34 #include "ash/system/status_area_widget.h"
  35 #include "ash/system/tray/system_tray_delegate.h"
  36 #include "ash/system/tray/system_tray_notifier.h"
  37 #include "ash/tooltips/tooltip_controller.h"
  38 #include "ash/touch/touch_observer_hud.h"
  39 #include "ash/wm/activation_controller.h"
  40 #include "ash/wm/always_on_top_controller.h"
  41 #include "ash/wm/app_list_controller.h"
  42 #include "ash/wm/ash_activation_controller.h"
  43 #include "ash/wm/ash_focus_rules.h"
  44 #include "ash/wm/base_layout_manager.h"
  45 #include "ash/wm/capture_controller.h"
  46 #include "ash/wm/coordinate_conversion.h"
  47 #include "ash/wm/custom_frame_view_ash.h"
  48 #include "ash/wm/event_client_impl.h"
  49 #include "ash/wm/event_rewriter_event_filter.h"
  50 #include "ash/wm/overlay_event_filter.h"
  51 #include "ash/wm/power_button_controller.h"
  52 #include "ash/wm/property_util.h"
  53 #include "ash/wm/resize_shadow_controller.h"
  54 #include "ash/wm/root_window_layout_manager.h"
  55 #include "ash/wm/screen_dimmer.h"
  56 #include "ash/wm/session_state_controller.h"
  57 #include "ash/wm/session_state_controller_impl.h"
  58 #include "ash/wm/session_state_controller_impl2.h"
  59 #include "ash/wm/stacking_controller.h"
  60 #include "ash/wm/system_gesture_event_filter.h"
  61 #include "ash/wm/system_modal_container_event_filter.h"
  62 #include "ash/wm/system_modal_container_layout_manager.h"
  63 #include "ash/wm/user_activity_detector.h"
  64 #include "ash/wm/video_detector.h"
  65 #include "ash/wm/window_animations.h"
  66 #include "ash/wm/window_cycle_controller.h"
  67 #include "ash/wm/window_properties.h"
  68 #include "ash/wm/window_util.h"
  69 #include "ash/wm/workspace_controller.h"
  70 #include "base/bind.h"
  71 #include "base/command_line.h"
  72 #include "base/debug/leak_annotations.h"
  73 #include "ui/aura/client/aura_constants.h"
  74 #include "ui/aura/client/stacking_client.h"
  75 #include "ui/aura/client/user_action_client.h"
  76 #include "ui/aura/env.h"
  77 #include "ui/aura/focus_manager.h"
  78 #include "ui/aura/layout_manager.h"
  79 #include "ui/aura/root_window.h"
  80 #include "ui/aura/window.h"
  81 #include "ui/base/ui_base_switches.h"
  82 #include "ui/compositor/layer.h"
  83 #include "ui/compositor/layer_animator.h"
  84 #include "ui/gfx/display.h"
  85 #include "ui/gfx/image/image_skia.h"
  86 #include "ui/gfx/screen.h"
  87 #include "ui/gfx/size.h"
  88 #include "ui/views/corewm/compound_event_filter.h"
  89 #include "ui/views/corewm/corewm_switches.h"
  90 #include "ui/views/corewm/focus_controller.h"
  91 #include "ui/views/corewm/input_method_event_filter.h"
  92 #include "ui/views/corewm/shadow_controller.h"
  93 #include "ui/views/corewm/visibility_controller.h"
  94 #include "ui/views/corewm/window_modality_controller.h"
  95 #include "ui/views/focus/focus_manager_factory.h"
  96 #include "ui/views/widget/native_widget_aura.h"
  97 #include "ui/views/widget/widget.h"
  98 #include "ui/views/window/dialog_frame_view.h"
  99
 100 #if !defined(OS_MACOSX)
 101 #include "ash/accelerators/accelerator_controller.h"
 102 #include "ash/accelerators/accelerator_filter.h"
 103 #include "ash/accelerators/nested_dispatcher_controller.h"
 104 #endif
 105
 106 #if defined(OS_CHROMEOS)
 107 #include "ash/display/display_change_observer_x11.h"
 108 #include "ash/display/output_configurator_animation.h"
 109 #include "base/chromeos/chromeos_version.h"
 110 #include "base/message_pump_aurax11.h"
 111 #include "chromeos/display/output_configurator.h"
 112 #include "content/public/browser/gpu_data_manager.h"
 113 #include "content/public/common/gpu_feature_type.h"
 114 #endif  // defined(OS_CHROMEOS)
 115
 116 namespace ash {
 117
 118 namespace {
 119
 120 using aura::Window;
 121 using views::Widget;
 122
 123 // This dummy class is used for shell unit tests. We dont have chrome delegate
 124 // in these tests.
 125 class DummyUserWallpaperDelegate : public UserWallpaperDelegate {
 126  public:
 127   DummyUserWallpaperDelegate() {}
 128
 129   virtual ~DummyUserWallpaperDelegate() {}
 130
 131   virtual int GetAnimationType() OVERRIDE {
 132     return views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE;
 133   }
 134
 135   virtual bool ShouldShowInitialAnimation() OVERRIDE {
 136     return false;
 137   }
 138
 139   virtual void UpdateWallpaper() OVERRIDE {
 140   }
 141
 142   virtual void InitializeWallpaper() OVERRIDE {
 143     ash::Shell::GetInstance()->desktop_background_controller()->
 144         CreateEmptyWallpaper();
 145   }
 146
 147   virtual void OpenSetWallpaperPage() OVERRIDE {
 148   }
 149
 150   virtual bool CanOpenSetWallpaperPage() OVERRIDE {
 151     return false;
 152   }
 153
 154   virtual void OnWallpaperAnimationFinished() OVERRIDE {
 155   }
 156
 157   virtual void OnWallpaperBootAnimationFinished() OVERRIDE {
 158   }
 159
 160  private:
 161   DISALLOW_COPY_AND_ASSIGN(DummyUserWallpaperDelegate);
 162 };
 163
 164 // A Corewm VisibilityController subclass that calls the Ash animation routine
 165 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 166 class AshVisibilityController : public views::corewm::VisibilityController {
 167  public:
 168   AshVisibilityController() {}
 169   virtual ~AshVisibilityController() {}
 170
 171  private:
 172   // Overridden from views::corewm::VisibilityController:
 173   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 174       aura::Window* window,
 175       bool visible) OVERRIDE {
 176     return AnimateOnChildWindowVisibilityChanged(window, visible);
 177   }
 178
 179   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 180 };
 181
 182 }  // namespace
 183
 184 // static
 185 Shell* Shell::instance_ = NULL;
 186 // static
 187 bool Shell::initially_hide_cursor_ = false;
 188
 189 ////////////////////////////////////////////////////////////////////////////////
 190 // Shell, public:
 191
 192 Shell::Shell(ShellDelegate* delegate)
 193     : screen_(new ScreenAsh),
 194       active_root_window_(NULL),
 195       delegate_(delegate),
 196       activation_client_(NULL),
 197 #if defined(OS_CHROMEOS)
 198       output_configurator_(new chromeos::OutputConfigurator()),
 199       output_configurator_animation_(
 200           new internal::OutputConfiguratorAnimation()),
 201 #endif  // defined(OS_CHROMEOS)
 202       browser_context_(NULL),
 203       simulate_modal_window_open_for_testing_(false) {
 204   DCHECK(delegate_.get());
 205   display_manager_.reset(new internal::DisplayManager);
 206   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
 207   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
 208   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
 209     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 210 #if defined(OS_CHROMEOS)
 211   content::GpuFeatureType blacklisted_features =
 212       content::GpuDataManager::GetInstance()->GetBlacklistedFeatures();
 213   bool is_panel_fitting_disabled =
 214       (blacklisted_features & content::GPU_FEATURE_TYPE_PANEL_FITTING) ||
 215       CommandLine::ForCurrentProcess()->HasSwitch(
 216           switches::kAshDisablePanelFitting);
 217   output_configurator_->Init(!is_panel_fitting_disabled);
 218
 219   output_configurator_->AddObserver(output_configurator_animation_.get());
 220   base::MessagePumpAuraX11::Current()->AddDispatcherForRootWindow(
 221       output_configurator());
 222 #endif  // defined(OS_CHROMEOS)
 223   AddPreTargetHandler(this);
 224 }
 225
 226 Shell::~Shell() {
 227   views::FocusManagerFactory::Install(NULL);
 228
 229   // Remove the focus from any window. This will prevent overhead and side
 230   // effects (e.g. crashes) from changing focus during shutdown.
 231   // See bug crbug.com/134502.
 232   if (active_root_window_)
 233     aura::client::GetFocusClient(active_root_window_)->FocusWindow(NULL);
 234
 235   // Please keep in same order as in Init() because it's easy to miss one.
 236   RemovePreTargetHandler(user_activity_detector_.get());
 237   RemovePreTargetHandler(event_rewriter_filter_.get());
 238   RemovePreTargetHandler(overlay_filter_.get());
 239   RemovePreTargetHandler(input_method_filter_.get());
 240   RemovePreTargetHandler(window_modality_controller_.get());
 241   if (mouse_cursor_filter_.get())
 242     RemovePreTargetHandler(mouse_cursor_filter_.get());
 243   RemovePreTargetHandler(system_gesture_filter_.get());
 244 #if !defined(OS_MACOSX)
 245   RemovePreTargetHandler(accelerator_filter_.get());
 246 #endif
 247   if (touch_observer_hud_.get())
 248     RemovePreTargetHandler(touch_observer_hud_.get());
 249
 250   // TooltipController is deleted with the Shell so removing its references.
 251   RemovePreTargetHandler(tooltip_controller_.get());
 252
 253   // AppList needs to be released before shelf layout manager, which is
 254   // destroyed with launcher container in the loop below. However, app list
 255   // container is now on top of launcher container and released after it.
 256   // TODO(xiyuan): Move it back when app list container is no longer needed.
 257   app_list_controller_.reset();
 258
 259   // Destroy SystemTrayDelegate before destroying the status area(s).
 260   system_tray_delegate_.reset();
 261
 262   // Destroy all child windows including widgets.
 263   display_controller_->CloseChildWindows();
 264
 265   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 266   // needs to remove observers from it.
 267   system_tray_notifier_.reset();
 268
 269   // These need a valid Shell instance to clean up properly, so explicitly
 270   // delete them before invalidating the instance.
 271   // Alphabetical. TODO(oshima): sort.
 272   drag_drop_controller_.reset();
 273   magnification_controller_.reset();
 274   partial_magnification_controller_.reset();
 275   resize_shadow_controller_.reset();
 276   shadow_controller_.reset();
 277   tooltip_controller_.reset();
 278   event_client_.reset();
 279   window_cycle_controller_.reset();
 280   capture_controller_.reset();
 281   nested_dispatcher_controller_.reset();
 282   user_action_client_.reset();
 283   visibility_controller_.reset();
 284   launcher_delegate_.reset();
 285   launcher_model_.reset();
 286
 287   power_button_controller_.reset();
 288   session_state_controller_.reset();
 289
 290   // This also deletes all RootWindows.
 291   display_controller_.reset();
 292   screen_position_controller_.reset();
 293
 294   // Delete the activation controller after other controllers and launcher
 295   // because they might have registered ActivationChangeObserver.
 296   activation_controller_.reset();
 297
 298   DCHECK(instance_ == this);
 299   instance_ = NULL;
 300
 301 #if defined(OS_CHROMEOS)
 302   output_configurator_->RemoveObserver(output_configurator_animation_.get());
 303   base::MessagePumpAuraX11::Current()->RemoveDispatcherForRootWindow(
 304       output_configurator());
 305 #endif  // defined(OS_CHROMEOS)
 306 }
 307
 308 // static
 309 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 310   CHECK(!instance_);
 311   instance_ = new Shell(delegate);
 312   instance_->Init();
 313   return instance_;
 314 }
 315
 316 // static
 317 Shell* Shell::GetInstance() {
 318   DCHECK(instance_);
 319   return instance_;
 320 }
 321
 322 // static
 323 bool Shell::HasInstance() {
 324   return !!instance_;
 325 }
 326
 327 // static
 328 void Shell::DeleteInstance() {
 329   delete instance_;
 330   instance_ = NULL;
 331 }
 332
 333 // static
 334 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 335   return GetRootWindowController(GetPrimaryRootWindow());
 336 }
 337
 338 // static
 339 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 340   return Shell::GetInstance()->display_controller()->
 341       GetAllRootWindowControllers();
 342 }
 343
 344 // static
 345 aura::RootWindow* Shell::GetPrimaryRootWindow() {
 346   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 347 }
 348
 349 // static
 350 aura::RootWindow* Shell::GetActiveRootWindow() {
 351   return GetInstance()->active_root_window_;
 352 }
 353
 354 // static
 355 gfx::Screen* Shell::GetScreen() {
 356   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 357 }
 358
 359 // static
 360 Shell::RootWindowList Shell::GetAllRootWindows() {
 361   return Shell::GetInstance()->display_controller()->
 362       GetAllRootWindows();
 363 }
 364
 365 // static
 366 aura::Window* Shell::GetContainer(aura::RootWindow* root_window,
 367                                   int container_id) {
 368   return root_window->GetChildById(container_id);
 369 }
 370
 371 // static
 372 const aura::Window* Shell::GetContainer(const aura::RootWindow* root_window,
 373                                         int container_id) {
 374   return root_window->GetChildById(container_id);
 375 }
 376
 377 // static
 378 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 379     int container_id,
 380     aura::RootWindow* priority_root) {
 381   std::vector<aura::Window*> containers;
 382   RootWindowList root_windows = GetAllRootWindows();
 383   for (RootWindowList::const_iterator it = root_windows.begin();
 384        it != root_windows.end(); ++it) {
 385     aura::Window* container = (*it)->GetChildById(container_id);
 386     if (container) {
 387       if (priority_root && priority_root->Contains(container))
 388         containers.insert(containers.begin(), container);
 389       else
 390         containers.push_back(container);
 391     }
 392   }
 393   return containers;
 394 }
 395
 396 // static
 397 bool Shell::IsLauncherPerDisplayEnabled() {
 398   CommandLine* command_line = CommandLine::ForCurrentProcess();
 399   return command_line->HasSwitch(switches::kAshLauncherPerDisplay);
 400 }
 401
 402 void Shell::Init() {
 403 #if defined(OS_CHROMEOS)
 404   if (base::chromeos::IsRunningOnChromeOS()) {
 405     display_change_observer_.reset(new internal::DisplayChangeObserverX11);
 406     display_change_observer_->NotifyDisplayChange();
 407   }
 408 #endif
 409
 410   // Install the custom factory first so that views::FocusManagers for Tray,
 411   // Launcher, and WallPaper could be created by the factory.
 412   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 413
 414   env_filter_.reset(new views::corewm::CompoundEventFilter);
 415   AddPreTargetHandler(env_filter_.get());
 416
 417   if (views::corewm::UseFocusController()) {
 418     views::corewm::FocusController* focus_controller =
 419         new views::corewm::FocusController(new wm::AshFocusRules);
 420     focus_client_.reset(focus_controller);
 421     activation_client_ = focus_controller;
 422     activation_client_->AddObserver(this);
 423   } else {
 424     focus_client_.reset(new aura::FocusManager);
 425     activation_controller_.reset(
 426         new internal::ActivationController(
 427             focus_client_.get(),
 428             new internal::AshActivationController));
 429     activation_client_ = activation_controller_.get();
 430     AddPreTargetHandler(activation_controller_.get());
 431   }
 432
 433   focus_cycler_.reset(new internal::FocusCycler());
 434
 435   screen_position_controller_.reset(new internal::ScreenPositionController);
 436   root_window_host_factory_.reset(delegate_->CreateRootWindowHostFactory());
 437   display_controller_.reset(new DisplayController);
 438   display_controller_->InitPrimaryDisplay();
 439   aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
 440   active_root_window_ = root_window;
 441
 442   cursor_manager_.SetDeviceScaleFactor(
 443       root_window->AsRootWindowHostDelegate()->GetDeviceScaleFactor());
 444
 445 #if !defined(OS_MACOSX)
 446   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 447   accelerator_controller_.reset(new AcceleratorController);
 448 #endif
 449
 450   // The order in which event filters are added is significant.
 451   user_activity_detector_.reset(new UserActivityDetector);
 452   AddPreTargetHandler(user_activity_detector_.get());
 453
 454   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
 455   AddPreTargetHandler(event_rewriter_filter_.get());
 456
 457   overlay_filter_.reset(new internal::OverlayEventFilter);
 458   AddPreTargetHandler(overlay_filter_.get());
 459   AddShellObserver(overlay_filter_.get());
 460
 461   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 462                                  root_window->GetAcceleratedWidget()));
 463   AddPreTargetHandler(input_method_filter_.get());
 464
 465 #if !defined(OS_MACOSX)
 466   accelerator_filter_.reset(new internal::AcceleratorFilter);
 467   AddPreTargetHandler(accelerator_filter_.get());
 468 #endif
 469
 470   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 471   AddPreTargetHandler(event_transformation_handler_.get());
 472
 473   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 474   AddPreTargetHandler(system_gesture_filter_.get());
 475
 476   capture_controller_.reset(new internal::CaptureController);
 477
 478   internal::RootWindowController* root_window_controller =
 479       new internal::RootWindowController(root_window);
 480   root_window_controller->CreateContainers();
 481   root_window_controller->CreateSystemBackground(
 482       delegate_->IsFirstRunAfterBoot());
 483
 484   CommandLine* command_line = CommandLine::ForCurrentProcess();
 485
 486   if (command_line->HasSwitch(ash::switches::kAshDisableNewLockAnimations))
 487     session_state_controller_.reset(new SessionStateControllerImpl);
 488   else
 489     session_state_controller_.reset(new SessionStateControllerImpl2);
 490   power_button_controller_.reset(new PowerButtonController(
 491       session_state_controller_.get()));
 492   AddShellObserver(session_state_controller_.get());
 493
 494   if (command_line->HasSwitch(switches::kAshTouchHud)) {
 495     touch_observer_hud_.reset(new internal::TouchObserverHUD);
 496     AddPreTargetHandler(touch_observer_hud_.get());
 497   }
 498
 499   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 500   AddPreTargetHandler(mouse_cursor_filter_.get());
 501
 502   // Create Controllers that may need root window.
 503   // TODO(oshima): Move as many controllers before creating
 504   // RootWindowController as possible.
 505   stacking_client_.reset(delegate_->CreateStackingClient());
 506   if (stacking_client_.get())
 507     aura::client::SetStackingClient(stacking_client_.get());
 508   visibility_controller_.reset(new AshVisibilityController);
 509   drag_drop_controller_.reset(new internal::DragDropController);
 510   user_action_client_.reset(delegate_->CreateUserActionClient());
 511   window_modality_controller_.reset(
 512       new views::corewm::WindowModalityController);
 513   AddPreTargetHandler(window_modality_controller_.get());
 514
 515   magnification_controller_.reset(
 516       MagnificationController::CreateInstance());
 517
 518   partial_magnification_controller_.reset(
 519       new PartialMagnificationController());
 520
 521   high_contrast_controller_.reset(new HighContrastController);
 522   video_detector_.reset(new VideoDetector);
 523   window_cycle_controller_.reset(new WindowCycleController(activation_client_));
 524
 525   tooltip_controller_.reset(new internal::TooltipController(
 526       drag_drop_controller_.get()));
 527   AddPreTargetHandler(tooltip_controller_.get());
 528
 529   event_client_.reset(new internal::EventClientImpl);
 530
 531   InitRootWindowController(root_window_controller);
 532
 533   // This controller needs to be set before SetupManagedWindowMode.
 534   desktop_background_controller_.reset(new DesktopBackgroundController());
 535   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 536   if (!user_wallpaper_delegate_.get())
 537     user_wallpaper_delegate_.reset(new DummyUserWallpaperDelegate());
 538
 539   // StatusAreaWidget uses Shell's CapsLockDelegate.
 540   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 541
 542   if (!command_line->HasSwitch(switches::kAuraNoShadows)) {
 543     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 544     shadow_controller_.reset(
 545         new views::corewm::ShadowController(GetPrimaryRootWindow()));
 546   }
 547
 548   // Create system_tray_notifier_ before the delegate.
 549   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 550
 551   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 552   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 553   if (!system_tray_delegate_.get())
 554     system_tray_delegate_.reset(SystemTrayDelegate::CreateDummyDelegate());
 555
 556   // Creates StatusAreaWidget.
 557   root_window_controller->InitForPrimaryDisplay();
 558
 559   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 560   system_tray_delegate_->Initialize();
 561
 562   display_controller_->InitSecondaryDisplays();
 563
 564   // Force Layout
 565   root_window_controller->root_window_layout()->OnWindowResized();
 566
 567   // It needs to be created after OnWindowResized has been called, otherwise the
 568   // widget will not paint when restoring after a browser crash.  Also it needs
 569   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 570   // the correct size.
 571   user_wallpaper_delegate_->InitializeWallpaper();
 572
 573   if (initially_hide_cursor_)
 574     cursor_manager_.DisableMouseEvents();
 575   cursor_manager_.SetCursor(ui::kCursorPointer);
 576
 577   // Cursor might have been hidden by somethign other than chrome.
 578   // Let the first mouse event show the cursor.
 579   env_filter_->set_cursor_hidden_by_filter(true);
 580 }
 581
 582 void Shell::ShowContextMenu(const gfx::Point& location_in_screen) {
 583   // No context menus if user have not logged in.
 584   if (!delegate_->IsUserLoggedIn())
 585     return;
 586   // No context menus when screen is locked.
 587   if (IsScreenLocked())
 588     return;
 589
 590   aura::RootWindow* root =
 591       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 592   // TODO(oshima): The root and root window controller shouldn't be
 593   // NULL even for the out-of-bounds |location_in_screen| (It should
 594   // return the primary root). Investigate why/how this is
 595   // happening. crbug.com/165214.
 596   internal::RootWindowController* rwc = GetRootWindowController(root);
 597   CHECK(rwc) << "root=" << root
 598              << ", location:" << location_in_screen.ToString();
 599   if (rwc)
 600     rwc->ShowContextMenu(location_in_screen);
 601 }
 602
 603 void Shell::ToggleAppList(aura::Window* window) {
 604   // If the context window is not given, show it on the active root window.
 605   if (!window)
 606     window = GetActiveRootWindow();
 607   if (!app_list_controller_.get())
 608     app_list_controller_.reset(new internal::AppListController);
 609   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 610 }
 611
 612 bool Shell::GetAppListTargetVisibility() const {
 613   return app_list_controller_.get() &&
 614       app_list_controller_->GetTargetVisibility();
 615 }
 616
 617 aura::Window* Shell::GetAppListWindow() {
 618   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 619 }
 620
 621 bool Shell::CanLockScreen() {
 622   return delegate_->CanLockScreen();
 623 }
 624
 625 bool Shell::IsScreenLocked() const {
 626   return delegate_->IsScreenLocked();
 627 }
 628
 629 bool Shell::IsSystemModalWindowOpen() const {
 630   if (simulate_modal_window_open_for_testing_)
 631     return true;
 632   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 633       internal::kShellWindowId_SystemModalContainer, NULL);
 634   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 635        cit != containers.end(); ++cit) {
 636     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 637          wit != (*cit)->children().end(); ++wit) {
 638       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 639           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 640         return true;
 641       }
 642     }
 643   }
 644   return false;
 645 }
 646
 647 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 648     views::Widget* widget) {
 649   if (CommandLine::ForCurrentProcess()->HasSwitch(
 650           ::switches::kEnableNewDialogStyle)) {
 651     return new views::DialogFrameView(string16());
 652   }
 653   // Use translucent-style window frames for dialogs.
 654   CustomFrameViewAsh* frame_view = new CustomFrameViewAsh;
 655   frame_view->Init(widget);
 656   return frame_view;
 657 }
 658
 659 void Shell::RotateFocus(Direction direction) {
 660   focus_cycler_->RotateFocus(
 661       direction == FORWARD ? internal::FocusCycler::FORWARD :
 662                              internal::FocusCycler::BACKWARD);
 663 }
 664
 665 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 666                                      const gfx::Insets& insets) {
 667   if (!display_manager_->UpdateWorkAreaOfDisplayNearestWindow(contains, insets))
 668     return;
 669   FOR_EACH_OBSERVER(ShellObserver, observers_,
 670                     OnDisplayWorkAreaInsetsChanged());
 671 }
 672
 673 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 674   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 675   RootWindowControllerList controllers = GetAllRootWindowControllers();
 676   for (RootWindowControllerList::iterator iter = controllers.begin();
 677        iter != controllers.end(); ++iter)
 678     (*iter)->OnLoginStateChanged(status);
 679 }
 680
 681 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 682   RootWindowControllerList controllers = GetAllRootWindowControllers();
 683   for (RootWindowControllerList::iterator iter = controllers.begin();
 684        iter != controllers.end(); ++iter)
 685     (*iter)->UpdateAfterLoginStatusChange(status);
 686 }
 687
 688 void Shell::OnAppTerminating() {
 689   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 690 }
 691
 692 void Shell::OnLockStateChanged(bool locked) {
 693   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 694 }
 695
 696 void Shell::CreateLauncher() {
 697   if (IsLauncherPerDisplayEnabled()) {
 698     RootWindowControllerList controllers = GetAllRootWindowControllers();
 699     for (RootWindowControllerList::iterator iter = controllers.begin();
 700          iter != controllers.end(); ++iter)
 701       (*iter)->CreateLauncher();
 702   } else {
 703     GetPrimaryRootWindowController()->CreateLauncher();
 704   }
 705 }
 706
 707 void Shell::ShowLauncher() {
 708   if (IsLauncherPerDisplayEnabled()) {
 709     RootWindowControllerList controllers = GetAllRootWindowControllers();
 710     for (RootWindowControllerList::iterator iter = controllers.begin();
 711          iter != controllers.end(); ++iter)
 712       (*iter)->ShowLauncher();
 713   } else {
 714     GetPrimaryRootWindowController()->ShowLauncher();
 715   }
 716 }
 717
 718 void Shell::AddShellObserver(ShellObserver* observer) {
 719   observers_.AddObserver(observer);
 720 }
 721
 722 void Shell::RemoveShellObserver(ShellObserver* observer) {
 723   observers_.RemoveObserver(observer);
 724 }
 725
 726 void Shell::UpdateShelfVisibility() {
 727   RootWindowControllerList controllers = GetAllRootWindowControllers();
 728   for (RootWindowControllerList::iterator iter = controllers.begin();
 729        iter != controllers.end(); ++iter)
 730     if ((*iter)->shelf())
 731       (*iter)->UpdateShelfVisibility();
 732 }
 733
 734 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 735                                      aura::RootWindow* root_window) {
 736   GetRootWindowController(root_window)->SetShelfAutoHideBehavior(behavior);
 737 }
 738
 739 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 740     aura::RootWindow* root_window) const {
 741   return GetRootWindowController(root_window)->GetShelfAutoHideBehavior();
 742 }
 743
 744 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 745                               aura::RootWindow* root_window) {
 746   if (GetRootWindowController(root_window)->SetShelfAlignment(alignment)) {
 747     FOR_EACH_OBSERVER(
 748         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 749   }
 750 }
 751
 752 ShelfAlignment Shell::GetShelfAlignment(aura::RootWindow* root_window) {
 753   return GetRootWindowController(root_window)->GetShelfAlignment();
 754 }
 755
 756 void Shell::SetDimming(bool should_dim) {
 757   RootWindowControllerList controllers = GetAllRootWindowControllers();
 758   for (RootWindowControllerList::iterator iter = controllers.begin();
 759        iter != controllers.end(); ++iter)
 760     (*iter)->screen_dimmer()->SetDimming(should_dim);
 761 }
 762
 763 void Shell::CreateModalBackground(aura::Window* window) {
 764   if (!modality_filter_.get()) {
 765     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 766     AddPreTargetHandler(modality_filter_.get());
 767   }
 768   RootWindowControllerList controllers = GetAllRootWindowControllers();
 769   for (RootWindowControllerList::iterator iter = controllers.begin();
 770        iter != controllers.end(); ++iter)
 771     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 772 }
 773
 774 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 775   RootWindowControllerList controllers = GetAllRootWindowControllers();
 776   bool activated = false;
 777   for (RootWindowControllerList::iterator iter = controllers.begin();
 778        iter != controllers.end() && !activated; ++iter) {
 779     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 780         ActivateNextModalWindow();
 781   }
 782   if (!activated) {
 783     RemovePreTargetHandler(modality_filter_.get());
 784     modality_filter_.reset();
 785     for (RootWindowControllerList::iterator iter = controllers.begin();
 786          iter != controllers.end(); ++iter)
 787       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 788   }
 789 }
 790
 791 WebNotificationTray* Shell::GetWebNotificationTray() {
 792   return GetPrimaryRootWindowController()->status_area_widget()->
 793       web_notification_tray();
 794 }
 795
 796 bool Shell::HasPrimaryStatusArea() {
 797   return !!GetPrimaryRootWindowController()->status_area_widget();
 798 }
 799
 800 SystemTray* Shell::GetPrimarySystemTray() {
 801   return GetPrimaryRootWindowController()->GetSystemTray();
 802 }
 803
 804 LauncherDelegate* Shell::GetLauncherDelegate() {
 805   if (!launcher_delegate_.get()) {
 806     launcher_model_.reset(new LauncherModel);
 807     launcher_delegate_.reset(
 808         delegate_->CreateLauncherDelegate(launcher_model_.get()));
 809   }
 810   return launcher_delegate_.get();
 811 }
 812
 813 void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
 814   aura::client::SetFocusClient(root, focus_client_.get());
 815   internal::RootWindowController* controller =
 816       new internal::RootWindowController(root);
 817   controller->CreateContainers();
 818   // Pass false for the |is_first_run_after_boot| parameter so we'll show a
 819   // black background on this display instead of trying to mimic the boot splash
 820   // screen.
 821   controller->CreateSystemBackground(false);
 822   InitRootWindowController(controller);
 823   if (IsLauncherPerDisplayEnabled())
 824     controller->InitForPrimaryDisplay();
 825   controller->root_window_layout()->OnWindowResized();
 826   desktop_background_controller_->OnRootWindowAdded(root);
 827   high_contrast_controller_->OnRootWindowAdded(root);
 828   root->ShowRootWindow();
 829   // Activate new root for testing.
 830   active_root_window_ = root;
 831 }
 832
 833 void Shell::DoInitialWorkspaceAnimation() {
 834   return GetPrimaryRootWindowController()->workspace_controller()->
 835       DoInitialAnimation();
 836 }
 837
 838 aura::client::StackingClient* Shell::stacking_client() {
 839   return stacking_client_.get();
 840 }
 841
 842 void Shell::InitRootWindowController(
 843     internal::RootWindowController* controller) {
 844   aura::RootWindow* root_window = controller->root_window();
 845   DCHECK(activation_client_);
 846   DCHECK(visibility_controller_.get());
 847   DCHECK(drag_drop_controller_.get());
 848   DCHECK(capture_controller_.get());
 849   DCHECK(window_cycle_controller_.get());
 850
 851   aura::client::SetFocusClient(root_window, focus_client_.get());
 852   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 853   aura::client::SetActivationClient(root_window, activation_client_);
 854   if (views::corewm::UseFocusController()) {
 855     views::corewm::FocusController* controller =
 856         static_cast<views::corewm::FocusController*>(activation_client_);
 857     root_window->AddPreTargetHandler(controller);
 858   }
 859   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
 860   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
 861   aura::client::SetCaptureClient(root_window, capture_controller_.get());
 862   aura::client::SetScreenPositionClient(root_window,
 863                                         screen_position_controller_.get());
 864   aura::client::SetCursorClient(root_window, &cursor_manager_);
 865   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
 866   aura::client::SetEventClient(root_window, event_client_.get());
 867
 868   if (nested_dispatcher_controller_.get()) {
 869     aura::client::SetDispatcherClient(root_window,
 870                                       nested_dispatcher_controller_.get());
 871   }
 872   if (user_action_client_.get())
 873     aura::client::SetUserActionClient(root_window, user_action_client_.get());
 874
 875   root_window->SetCursor(ui::kCursorPointer);
 876   controller->InitLayoutManagers();
 877
 878   // TODO(oshima): Move the instance to RootWindowController when
 879   // the extended desktop is enabled by default.
 880   internal::AlwaysOnTopController* always_on_top_controller =
 881       new internal::AlwaysOnTopController;
 882   always_on_top_controller->SetAlwaysOnTopContainer(
 883       root_window->GetChildById(internal::kShellWindowId_AlwaysOnTopContainer));
 884   root_window->SetProperty(internal::kAlwaysOnTopControllerKey,
 885                            always_on_top_controller);
 886   if (GetPrimaryRootWindowController()->GetSystemModalLayoutManager(NULL)->
 887           has_modal_background()) {
 888     controller->GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 889   }
 890
 891   window_cycle_controller_->OnRootWindowAdded(root_window);
 892 }
 893
 894 ////////////////////////////////////////////////////////////////////////////////
 895 // Shell, private:
 896
 897 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
 898   RootWindowControllerList controllers = GetAllRootWindowControllers();
 899   for (RootWindowControllerList::iterator iter = controllers.begin();
 900        iter != controllers.end(); ++iter) {
 901     if ((*iter)->GetSystemModalLayoutManager(window)->
 902             CanWindowReceiveEvents(window)) {
 903       return true;
 904     }
 905   }
 906   return false;
 907 }
 908
 909 ////////////////////////////////////////////////////////////////////////////////
 910 // Shell, ui::EventTarget overrides:
 911
 912 bool Shell::CanAcceptEvent(const ui::Event& event) {
 913   return true;
 914 }
 915
 916 ui::EventTarget* Shell::GetParentTarget() {
 917   return NULL;
 918 }
 919
 920 void Shell::OnEvent(ui::Event* event) {
 921 }
 922
 923 ////////////////////////////////////////////////////////////////////////////////
 924 // Shell, aura::client::ActivationChangeObserver implementation:
 925
 926 void Shell::OnWindowActivated(aura::Window* gained_active,
 927                               aura::Window* lost_active) {
 928   if (gained_active)
 929     active_root_window_ = gained_active->GetRootWindow();
 930 }
 931
 932 }  // namespace ash