src/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/accelerator_controller.h"
  11 #include "ash/accelerators/accelerator_filter.h"
  12 #include "ash/accelerators/focus_manager_factory.h"
  13 #include "ash/accelerators/nested_dispatcher_controller.h"
  14 #include "ash/ash_switches.h"
  15 #include "ash/autoclick/autoclick_controller.h"
  16 #include "ash/caps_lock_delegate.h"
  17 #include "ash/desktop_background/desktop_background_controller.h"
  18 #include "ash/desktop_background/desktop_background_view.h"
  19 #include "ash/desktop_background/user_wallpaper_delegate.h"
  20 #include "ash/display/display_controller.h"
  21 #include "ash/display/display_manager.h"
  22 #include "ash/display/event_transformation_handler.h"
  23 #include "ash/display/mouse_cursor_event_filter.h"
  24 #include "ash/display/resolution_notification_controller.h"
  25 #include "ash/display/screen_position_controller.h"
  26 #include "ash/drag_drop/drag_drop_controller.h"
  27 #include "ash/first_run/first_run_helper_impl.h"
  28 #include "ash/focus_cycler.h"
  29 #include "ash/high_contrast/high_contrast_controller.h"
  30 #include "ash/host/root_window_host_factory.h"
  31 #include "ash/keyboard_uma_event_filter.h"
  32 #include "ash/launcher/launcher_delegate.h"
  33 #include "ash/launcher/launcher_item_delegate.h"
  34 #include "ash/launcher/launcher_item_delegate_manager.h"
  35 #include "ash/launcher/launcher_model.h"
  36 #include "ash/magnifier/magnification_controller.h"
  37 #include "ash/magnifier/partial_magnification_controller.h"
  38 #include "ash/media_delegate.h"
  39 #include "ash/new_window_delegate.h"
  40 #include "ash/root_window_controller.h"
  41 #include "ash/screen_ash.h"
  42 #include "ash/session_state_delegate.h"
  43 #include "ash/shelf/app_list_shelf_item_delegate.h"
  44 #include "ash/shelf/shelf_layout_manager.h"
  45 #include "ash/shelf/shelf_model_util.h"
  46 #include "ash/shelf/shelf_widget.h"
  47 #include "ash/shell_delegate.h"
  48 #include "ash/shell_factory.h"
  49 #include "ash/shell_window_ids.h"
  50 #include "ash/system/locale/locale_notification_controller.h"
  51 #include "ash/system/status_area_widget.h"
  52 #include "ash/system/tray/system_tray_delegate.h"
  53 #include "ash/system/tray/system_tray_notifier.h"
  54 #include "ash/wm/app_list_controller.h"
  55 #include "ash/wm/ash_focus_rules.h"
  56 #include "ash/wm/ash_native_cursor_manager.h"
  57 #include "ash/wm/base_layout_manager.h"
  58 #include "ash/wm/coordinate_conversion.h"
  59 #include "ash/wm/custom_frame_view_ash.h"
  60 #include "ash/wm/event_client_impl.h"
  61 #include "ash/wm/event_rewriter_event_filter.h"
  62 #include "ash/wm/lock_state_controller.h"
  63 #include "ash/wm/mru_window_tracker.h"
  64 #include "ash/wm/overlay_event_filter.h"
  65 #include "ash/wm/overview/window_selector_controller.h"
  66 #include "ash/wm/power_button_controller.h"
  67 #include "ash/wm/resize_shadow_controller.h"
  68 #include "ash/wm/root_window_layout_manager.h"
  69 #include "ash/wm/screen_dimmer.h"
  70 #include "ash/wm/system_gesture_event_filter.h"
  71 #include "ash/wm/system_modal_container_event_filter.h"
  72 #include "ash/wm/system_modal_container_layout_manager.h"
  73 #include "ash/wm/user_activity_detector.h"
  74 #include "ash/wm/video_detector.h"
  75 #include "ash/wm/window_animations.h"
  76 #include "ash/wm/window_cycle_controller.h"
  77 #include "ash/wm/window_positioner.h"
  78 #include "ash/wm/window_properties.h"
  79 #include "ash/wm/window_util.h"
  80 #include "ash/wm/workspace_controller.h"
  81 #include "base/bind.h"
  82 #include "base/command_line.h"
  83 #include "base/debug/leak_annotations.h"
  84 #include "base/debug/trace_event.h"
  85 #include "ui/aura/client/aura_constants.h"
  86 #include "ui/aura/client/user_action_client.h"
  87 #include "ui/aura/env.h"
  88 #include "ui/aura/layout_manager.h"
  89 #include "ui/aura/root_window.h"
  90 #include "ui/aura/window.h"
  91 #include "ui/base/ui_base_switches.h"
  92 #include "ui/compositor/layer.h"
  93 #include "ui/compositor/layer_animator.h"
  94 #include "ui/gfx/display.h"
  95 #include "ui/gfx/image/image_skia.h"
  96 #include "ui/gfx/screen.h"
  97 #include "ui/gfx/size.h"
  98 #include "ui/keyboard/keyboard.h"
  99 #include "ui/keyboard/keyboard_controller.h"
 100 #include "ui/keyboard/keyboard_switches.h"
 101 #include "ui/keyboard/keyboard_util.h"
 102 #include "ui/message_center/message_center.h"
 103 #include "ui/views/corewm/compound_event_filter.h"
 104 #include "ui/views/corewm/corewm_switches.h"
 105 #include "ui/views/corewm/focus_controller.h"
 106 #include "ui/views/corewm/input_method_event_filter.h"
 107 #include "ui/views/corewm/shadow_controller.h"
 108 #include "ui/views/corewm/tooltip_aura.h"
 109 #include "ui/views/corewm/tooltip_controller.h"
 110 #include "ui/views/corewm/visibility_controller.h"
 111 #include "ui/views/corewm/window_modality_controller.h"
 112 #include "ui/views/focus/focus_manager_factory.h"
 113 #include "ui/views/widget/native_widget_aura.h"
 114 #include "ui/views/widget/widget.h"
 115
 116 #if defined(OS_CHROMEOS)
 117 #if defined(USE_X11)
 118 #include "ash/ash_constants.h"
 119 #include "ash/display/display_change_observer_chromeos.h"
 120 #include "ash/display/display_error_observer_chromeos.h"
 121 #include "ash/display/output_configurator_animation.h"
 122 #include "base/message_loop/message_pump_x11.h"
 123 #include "base/sys_info.h"
 124 #include "chromeos/display/output_configurator.h"
 125 #include "content/public/browser/gpu_data_manager.h"
 126 #include "gpu/config/gpu_feature_type.h"
 127 #endif  // defined(USE_X11)
 128 #include "ash/system/chromeos/brightness/brightness_controller_chromeos.h"
 129 #include "ash/system/chromeos/power/power_event_observer.h"
 130 #include "ash/system/chromeos/power/power_status.h"
 131 #include "ash/system/chromeos/power/user_activity_notifier.h"
 132 #include "ash/system/chromeos/power/video_activity_notifier.h"
 133 #endif  // defined(OS_CHROMEOS)
 134
 135 namespace ash {
 136
 137 namespace {
 138
 139 using aura::Window;
 140 using views::Widget;
 141
 142 // A Corewm VisibilityController subclass that calls the Ash animation routine
 143 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 144 class AshVisibilityController : public views::corewm::VisibilityController {
 145  public:
 146   AshVisibilityController() {}
 147   virtual ~AshVisibilityController() {}
 148
 149  private:
 150   // Overridden from views::corewm::VisibilityController:
 151   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 152       aura::Window* window,
 153       bool visible) OVERRIDE {
 154     return AnimateOnChildWindowVisibilityChanged(window, visible);
 155   }
 156
 157   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 158 };
 159
 160 }  // namespace
 161
 162 // static
 163 Shell* Shell::instance_ = NULL;
 164 // static
 165 bool Shell::initially_hide_cursor_ = false;
 166
 167 ////////////////////////////////////////////////////////////////////////////////
 168 // Shell, public:
 169
 170 // static
 171 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 172   CHECK(!instance_);
 173   instance_ = new Shell(delegate);
 174   instance_->Init();
 175   return instance_;
 176 }
 177
 178 // static
 179 Shell* Shell::GetInstance() {
 180   DCHECK(instance_);
 181   return instance_;
 182 }
 183
 184 // static
 185 bool Shell::HasInstance() {
 186   return !!instance_;
 187 }
 188
 189 // static
 190 void Shell::DeleteInstance() {
 191   delete instance_;
 192   instance_ = NULL;
 193 }
 194
 195 // static
 196 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 197   return internal::GetRootWindowController(GetPrimaryRootWindow());
 198 }
 199
 200 // static
 201 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 202   return Shell::GetInstance()->display_controller()->
 203       GetAllRootWindowControllers();
 204 }
 205
 206 // static
 207 aura::Window* Shell::GetPrimaryRootWindow() {
 208   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 209 }
 210
 211 // static
 212 aura::Window* Shell::GetTargetRootWindow() {
 213   Shell* shell = GetInstance();
 214   if (shell->scoped_target_root_window_)
 215     return shell->scoped_target_root_window_;
 216   return shell->target_root_window_;
 217 }
 218
 219 // static
 220 gfx::Screen* Shell::GetScreen() {
 221   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 222 }
 223
 224 // static
 225 Shell::RootWindowList Shell::GetAllRootWindows() {
 226   return Shell::GetInstance()->display_controller()->
 227       GetAllRootWindows();
 228 }
 229
 230 // static
 231 aura::Window* Shell::GetContainer(aura::Window* root_window,
 232                                   int container_id) {
 233   return root_window->GetChildById(container_id);
 234 }
 235
 236 // static
 237 const aura::Window* Shell::GetContainer(const aura::Window* root_window,
 238                                         int container_id) {
 239   return root_window->GetChildById(container_id);
 240 }
 241
 242 // static
 243 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 244     int container_id,
 245     aura::Window* priority_root) {
 246   std::vector<aura::Window*> containers;
 247   RootWindowList root_windows = GetAllRootWindows();
 248   for (RootWindowList::const_iterator it = root_windows.begin();
 249        it != root_windows.end(); ++it) {
 250     aura::Window* container = (*it)->GetChildById(container_id);
 251     if (container) {
 252       if (priority_root && priority_root->Contains(container))
 253         containers.insert(containers.begin(), container);
 254       else
 255         containers.push_back(container);
 256     }
 257   }
 258   return containers;
 259 }
 260
 261 void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
 262                             ui::MenuSourceType source_type) {
 263   // No context menus if there is no session with an active user.
 264   if (!session_state_delegate_->NumberOfLoggedInUsers())
 265     return;
 266   // No context menus when screen is locked.
 267   if (session_state_delegate_->IsScreenLocked())
 268     return;
 269
 270   aura::Window* root =
 271       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 272   internal::GetRootWindowController(root)->
 273       ShowContextMenu(location_in_screen, source_type);
 274 }
 275
 276 void Shell::ToggleAppList(aura::Window* window) {
 277   // If the context window is not given, show it on the target root window.
 278   if (!window)
 279     window = GetTargetRootWindow();
 280   if (!app_list_controller_)
 281     app_list_controller_.reset(new internal::AppListController);
 282   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 283 }
 284
 285 bool Shell::GetAppListTargetVisibility() const {
 286   return app_list_controller_.get() &&
 287       app_list_controller_->GetTargetVisibility();
 288 }
 289
 290 aura::Window* Shell::GetAppListWindow() {
 291   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 292 }
 293
 294 app_list::AppListView* Shell::GetAppListView() {
 295   return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
 296 }
 297
 298 bool Shell::IsSystemModalWindowOpen() const {
 299   if (simulate_modal_window_open_for_testing_)
 300     return true;
 301   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 302       internal::kShellWindowId_SystemModalContainer, NULL);
 303   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 304        cit != containers.end(); ++cit) {
 305     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 306          wit != (*cit)->children().end(); ++wit) {
 307       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 308           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 309         return true;
 310       }
 311     }
 312   }
 313   return false;
 314 }
 315
 316 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 317     views::Widget* widget) {
 318   // Use translucent-style window frames for dialogs.
 319   return new CustomFrameViewAsh(widget);
 320 }
 321
 322 void Shell::RotateFocus(Direction direction) {
 323   focus_cycler_->RotateFocus(
 324       direction == FORWARD ? internal::FocusCycler::FORWARD :
 325                              internal::FocusCycler::BACKWARD);
 326 }
 327
 328 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 329                                      const gfx::Insets& insets) {
 330   if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
 331           contains, insets)) {
 332     return;
 333   }
 334   FOR_EACH_OBSERVER(ShellObserver, observers_,
 335                     OnDisplayWorkAreaInsetsChanged());
 336 }
 337
 338 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 339   if (status != user::LOGGED_IN_NONE) {
 340     // TODO(bshe): Primary root window controller may not be the controller to
 341     // attach virtual keyboard. See http://crbug.com/303429
 342     InitKeyboard(GetPrimaryRootWindowController());
 343     GetPrimaryRootWindowController()->ActivateKeyboard(
 344         keyboard_controller_.get());
 345   }
 346   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 347 }
 348
 349 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 350   RootWindowControllerList controllers = GetAllRootWindowControllers();
 351   for (RootWindowControllerList::iterator iter = controllers.begin();
 352        iter != controllers.end(); ++iter)
 353     (*iter)->UpdateAfterLoginStatusChange(status);
 354 }
 355
 356 void Shell::OnAppTerminating() {
 357   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 358 }
 359
 360 void Shell::OnLockStateChanged(bool locked) {
 361   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 362 #ifndef NDEBUG
 363   // Make sure that there is no system modal in Lock layer when unlocked.
 364   if (!locked) {
 365     std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 366         internal::kShellWindowId_LockSystemModalContainer,
 367         GetPrimaryRootWindow());
 368     for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
 369          iter != containers.end(); ++iter) {
 370       DCHECK_EQ(0u, (*iter)->children().size());
 371     }
 372   }
 373 #endif
 374 }
 375
 376 void Shell::CreateLauncher() {
 377   RootWindowControllerList controllers = GetAllRootWindowControllers();
 378   for (RootWindowControllerList::iterator iter = controllers.begin();
 379        iter != controllers.end(); ++iter)
 380     (*iter)->shelf()->CreateLauncher();
 381 }
 382
 383 void Shell::ShowLauncher() {
 384   RootWindowControllerList controllers = GetAllRootWindowControllers();
 385   for (RootWindowControllerList::iterator iter = controllers.begin();
 386        iter != controllers.end(); ++iter)
 387     (*iter)->ShowLauncher();
 388 }
 389
 390 void Shell::AddShellObserver(ShellObserver* observer) {
 391   observers_.AddObserver(observer);
 392 }
 393
 394 void Shell::RemoveShellObserver(ShellObserver* observer) {
 395   observers_.RemoveObserver(observer);
 396 }
 397
 398 void Shell::UpdateShelfVisibility() {
 399   RootWindowControllerList controllers = GetAllRootWindowControllers();
 400   for (RootWindowControllerList::iterator iter = controllers.begin();
 401        iter != controllers.end(); ++iter)
 402     if ((*iter)->shelf())
 403       (*iter)->UpdateShelfVisibility();
 404 }
 405
 406 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 407                                      aura::Window* root_window) {
 408   ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 409       SetAutoHideBehavior(behavior);
 410 }
 411
 412 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 413     aura::Window* root_window) const {
 414   return ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 415       auto_hide_behavior();
 416 }
 417
 418 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 419                               aura::Window* root_window) {
 420   if (ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 421       SetAlignment(alignment)) {
 422     FOR_EACH_OBSERVER(
 423         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 424   }
 425 }
 426
 427 ShelfAlignment Shell::GetShelfAlignment(aura::Window* root_window) {
 428   return internal::GetRootWindowController(root_window)->
 429       GetShelfLayoutManager()->GetAlignment();
 430 }
 431
 432 void Shell::SetDimming(bool should_dim) {
 433   RootWindowControllerList controllers = GetAllRootWindowControllers();
 434   for (RootWindowControllerList::iterator iter = controllers.begin();
 435        iter != controllers.end(); ++iter)
 436     (*iter)->screen_dimmer()->SetDimming(should_dim);
 437 }
 438
 439 void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
 440                                         aura::Window* root_window) {
 441   FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
 442       is_fullscreen, root_window));
 443 }
 444
 445 void Shell::CreateModalBackground(aura::Window* window) {
 446   if (!modality_filter_) {
 447     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 448     AddPreTargetHandler(modality_filter_.get());
 449   }
 450   RootWindowControllerList controllers = GetAllRootWindowControllers();
 451   for (RootWindowControllerList::iterator iter = controllers.begin();
 452        iter != controllers.end(); ++iter)
 453     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 454 }
 455
 456 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 457   RootWindowControllerList controllers = GetAllRootWindowControllers();
 458   bool activated = false;
 459   for (RootWindowControllerList::iterator iter = controllers.begin();
 460        iter != controllers.end() && !activated; ++iter) {
 461     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 462         ActivateNextModalWindow();
 463   }
 464   if (!activated) {
 465     RemovePreTargetHandler(modality_filter_.get());
 466     modality_filter_.reset();
 467     for (RootWindowControllerList::iterator iter = controllers.begin();
 468          iter != controllers.end(); ++iter)
 469       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 470   }
 471 }
 472
 473 WebNotificationTray* Shell::GetWebNotificationTray() {
 474   return GetPrimaryRootWindowController()->shelf()->
 475       status_area_widget()->web_notification_tray();
 476 }
 477
 478 bool Shell::HasPrimaryStatusArea() {
 479   ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
 480   return shelf && shelf->status_area_widget();
 481 }
 482
 483 SystemTray* Shell::GetPrimarySystemTray() {
 484   return GetPrimaryRootWindowController()->GetSystemTray();
 485 }
 486
 487 LauncherDelegate* Shell::GetLauncherDelegate() {
 488   if (!launcher_delegate_) {
 489     launcher_model_.reset(new LauncherModel);
 490     // Creates LauncherItemDelegateManager before LauncherDelegate.
 491     launcher_item_delegate_manager_.reset(
 492         new LauncherItemDelegateManager(launcher_model_.get()));
 493
 494     launcher_delegate_.reset(
 495         delegate_->CreateLauncherDelegate(launcher_model_.get()));
 496     scoped_ptr<LauncherItemDelegate> controller(
 497         new internal::AppListShelfItemDelegate);
 498
 499     // Finding the launcher model's location of the app list and setting its
 500     // LauncherItemDelegate.
 501     int app_list_index =
 502         GetShelfItemIndexForType(ash::TYPE_APP_LIST, *launcher_model_);
 503     DCHECK_GE(app_list_index, 0);
 504     ash::LauncherID app_list_id = launcher_model_->items()[app_list_index].id;
 505     DCHECK(app_list_id);
 506     launcher_item_delegate_manager_->SetLauncherItemDelegate(
 507         app_list_id,
 508         controller.Pass());
 509   }
 510   return launcher_delegate_.get();
 511 }
 512
 513 void Shell::SetTouchHudProjectionEnabled(bool enabled) {
 514   if (is_touch_hud_projection_enabled_ == enabled)
 515     return;
 516
 517   is_touch_hud_projection_enabled_ = enabled;
 518   FOR_EACH_OBSERVER(ShellObserver, observers_,
 519                     OnTouchHudProjectionToggled(enabled));
 520 }
 521
 522 #if defined(OS_CHROMEOS)
 523 ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
 524   return new ash::FirstRunHelperImpl;
 525 }
 526 #endif  // defined(OS_CHROMEOS)
 527
 528 void Shell::DoInitialWorkspaceAnimation() {
 529   return GetPrimaryRootWindowController()->workspace_controller()->
 530       DoInitialAnimation();
 531 }
 532
 533 ////////////////////////////////////////////////////////////////////////////////
 534 // Shell, private:
 535
 536 Shell::Shell(ShellDelegate* delegate)
 537     : screen_(new ScreenAsh),
 538       target_root_window_(NULL),
 539       scoped_target_root_window_(NULL),
 540       delegate_(delegate),
 541       window_positioner_(new WindowPositioner),
 542       activation_client_(NULL),
 543 #if defined(OS_CHROMEOS) && defined(USE_X11)
 544       output_configurator_(new chromeos::OutputConfigurator()),
 545 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 546       native_cursor_manager_(new AshNativeCursorManager),
 547       cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
 548           native_cursor_manager_)),
 549       browser_context_(NULL),
 550       simulate_modal_window_open_for_testing_(false),
 551       is_touch_hud_projection_enabled_(false) {
 552   DCHECK(delegate_.get());
 553   display_manager_.reset(new internal::DisplayManager);
 554
 555   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
 556   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
 557   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
 558     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 559   display_controller_.reset(new DisplayController);
 560 #if defined(OS_CHROMEOS) && defined(USE_X11)
 561   bool is_panel_fitting_disabled =
 562       content::GpuDataManager::GetInstance()->IsFeatureBlacklisted(
 563           gpu::GPU_FEATURE_TYPE_PANEL_FITTING);
 564
 565   output_configurator_->Init(!is_panel_fitting_disabled);
 566
 567   base::MessagePumpX11::Current()->AddDispatcherForRootWindow(
 568       output_configurator());
 569   // We can't do this with a root window listener because XI_HierarchyChanged
 570   // messages don't have a target window.
 571   base::MessagePumpX11::Current()->AddObserver(output_configurator());
 572 #endif  // defined(OS_CHROMEOS)
 573
 574 #if defined(OS_CHROMEOS)
 575   internal::PowerStatus::Initialize();
 576 #endif
 577 }
 578
 579 Shell::~Shell() {
 580   TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
 581
 582   views::FocusManagerFactory::Install(NULL);
 583
 584   // Remove the focus from any window. This will prevent overhead and side
 585   // effects (e.g. crashes) from changing focus during shutdown.
 586   // See bug crbug.com/134502.
 587   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
 588
 589   // Please keep in same order as in Init() because it's easy to miss one.
 590   if (window_modality_controller_)
 591     window_modality_controller_.reset();
 592   RemovePreTargetHandler(event_rewriter_filter_.get());
 593   RemovePreTargetHandler(user_activity_detector_.get());
 594   RemovePreTargetHandler(overlay_filter_.get());
 595   RemovePreTargetHandler(input_method_filter_.get());
 596   if (mouse_cursor_filter_)
 597     RemovePreTargetHandler(mouse_cursor_filter_.get());
 598   RemovePreTargetHandler(system_gesture_filter_.get());
 599   RemovePreTargetHandler(keyboard_metrics_filter_.get());
 600   RemovePreTargetHandler(event_transformation_handler_.get());
 601   RemovePreTargetHandler(accelerator_filter_.get());
 602
 603   // TooltipController is deleted with the Shell so removing its references.
 604   RemovePreTargetHandler(tooltip_controller_.get());
 605
 606   // AppList needs to be released before shelf layout manager, which is
 607   // destroyed with launcher container in the loop below. However, app list
 608   // container is now on top of launcher container and released after it.
 609   // TODO(xiyuan): Move it back when app list container is no longer needed.
 610   app_list_controller_.reset();
 611
 612   // Destroy SystemTrayDelegate before destroying the status area(s).
 613   system_tray_delegate_->Shutdown();
 614   system_tray_delegate_.reset();
 615
 616   locale_notification_controller_.reset();
 617
 618   // Drag-and-drop must be canceled prior to close all windows.
 619   drag_drop_controller_.reset();
 620
 621   // Destroy all child windows including widgets.
 622   display_controller_->CloseChildWindows();
 623
 624   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 625   // needs to remove observers from it.
 626   system_tray_notifier_.reset();
 627
 628 #if defined(OS_CHROMEOS)
 629   // Destroy VideoActivityNotifier before destroying VideoDetector.
 630   video_activity_notifier_.reset();
 631 #endif  // defined(OS_CHROMEOS)
 632
 633   // These need a valid Shell instance to clean up properly, so explicitly
 634   // delete them before invalidating the instance.
 635   // Alphabetical. TODO(oshima): sort.
 636   magnification_controller_.reset();
 637   partial_magnification_controller_.reset();
 638   resize_shadow_controller_.reset();
 639   shadow_controller_.reset();
 640   tooltip_controller_.reset();
 641   event_client_.reset();
 642   window_cycle_controller_.reset();
 643   nested_dispatcher_controller_.reset();
 644   user_action_client_.reset();
 645   visibility_controller_.reset();
 646   launcher_delegate_.reset();
 647   // |launcher_item_delegate_manager_| observes |launcher_model_|. It must be
 648   // destroyed before |launcher_model_| is destroyed.
 649   launcher_item_delegate_manager_.reset();
 650   launcher_model_.reset();
 651   video_detector_.reset();
 652
 653   power_button_controller_.reset();
 654   lock_state_controller_.reset();
 655   mru_window_tracker_.reset();
 656
 657   resolution_notification_controller_.reset();
 658   desktop_background_controller_.reset();
 659
 660   // This also deletes all RootWindows. Note that we invoke Shutdown() on
 661   // DisplayController before resetting |display_controller_|, since destruction
 662   // of its owned RootWindowControllers relies on the value.
 663   display_controller_->Shutdown();
 664   display_controller_.reset();
 665   screen_position_controller_.reset();
 666
 667   keyboard_controller_.reset();
 668   accessibility_delegate_.reset();
 669   new_window_delegate_.reset();
 670   media_delegate_.reset();
 671
 672 #if defined(OS_CHROMEOS) && defined(USE_X11)
 673    if (display_change_observer_)
 674     output_configurator_->RemoveObserver(display_change_observer_.get());
 675   if (output_configurator_animation_)
 676     output_configurator_->RemoveObserver(output_configurator_animation_.get());
 677   if (display_error_observer_)
 678     output_configurator_->RemoveObserver(display_error_observer_.get());
 679   base::MessagePumpX11::Current()->RemoveDispatcherForRootWindow(
 680       output_configurator());
 681   base::MessagePumpX11::Current()->RemoveObserver(output_configurator());
 682   display_change_observer_.reset();
 683 #endif  // defined(OS_CHROMEOS)
 684
 685 #if defined(OS_CHROMEOS)
 686   internal::PowerStatus::Shutdown();
 687 #endif
 688
 689   DCHECK(instance_ == this);
 690   instance_ = NULL;
 691 }
 692
 693 void Shell::Init() {
 694   CommandLine* command_line = CommandLine::ForCurrentProcess();
 695
 696   delegate_->PreInit();
 697   if (command_line->HasSwitch(keyboard::switches::kKeyboardUsabilityTest)) {
 698     display_manager_->SetSecondDisplayMode(
 699         internal::DisplayManager::VIRTUAL_KEYBOARD);
 700   }
 701   bool display_initialized = display_manager_->InitFromCommandLine();
 702 #if defined(OS_CHROMEOS) && defined(USE_X11)
 703   output_configurator_animation_.reset(
 704       new internal::OutputConfiguratorAnimation());
 705   output_configurator_->AddObserver(output_configurator_animation_.get());
 706
 707   if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
 708     display_change_observer_.reset(new internal::DisplayChangeObserver);
 709     // Register |display_change_observer_| first so that the rest of
 710     // observer gets invoked after the root windows are configured.
 711     output_configurator_->AddObserver(display_change_observer_.get());
 712     display_error_observer_.reset(new internal::DisplayErrorObserver());
 713     output_configurator_->AddObserver(display_error_observer_.get());
 714     output_configurator_->set_state_controller(display_change_observer_.get());
 715     output_configurator_->set_mirroring_controller(display_manager_.get());
 716     output_configurator_->Start(
 717         delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
 718     display_initialized = true;
 719   }
 720 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 721   if (!display_initialized)
 722     display_manager_->InitDefaultDisplay();
 723
 724   // Install the custom factory first so that views::FocusManagers for Tray,
 725   // Launcher, and WallPaper could be created by the factory.
 726   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 727
 728   // Env creates the compositor. Historically it seems to have been implicitly
 729   // initialized first by the ActivationController, but now that FocusController
 730   // no longer does this we need to do it explicitly.
 731   aura::Env::CreateInstance();
 732
 733   // The WindowModalityController needs to be at the front of the input event
 734   // pretarget handler list to ensure that it processes input events when modal
 735   // windows are active.
 736   window_modality_controller_.reset(
 737       new views::corewm::WindowModalityController(this));
 738
 739   AddPreTargetHandler(this);
 740
 741   env_filter_.reset(new views::corewm::CompoundEventFilter);
 742   AddPreTargetHandler(env_filter_.get());
 743
 744   views::corewm::FocusController* focus_controller =
 745       new views::corewm::FocusController(new wm::AshFocusRules);
 746   focus_client_.reset(focus_controller);
 747   activation_client_ = focus_controller;
 748   activation_client_->AddObserver(this);
 749   focus_cycler_.reset(new internal::FocusCycler());
 750
 751   screen_position_controller_.reset(new internal::ScreenPositionController);
 752   root_window_host_factory_.reset(delegate_->CreateRootWindowHostFactory());
 753
 754   display_controller_->Start();
 755   display_controller_->InitPrimaryDisplay();
 756   aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
 757   target_root_window_ = root_window;
 758
 759   resolution_notification_controller_.reset(
 760       new internal::ResolutionNotificationController);
 761
 762   cursor_manager_.SetDisplay(DisplayController::GetPrimaryDisplay());
 763
 764   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 765   accelerator_controller_.reset(new AcceleratorController);
 766
 767   // The order in which event filters are added is significant.
 768   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
 769   AddPreTargetHandler(event_rewriter_filter_.get());
 770
 771   // UserActivityDetector passes events to observers, so let them get
 772   // rewritten first.
 773   user_activity_detector_.reset(new UserActivityDetector);
 774   AddPreTargetHandler(user_activity_detector_.get());
 775
 776   overlay_filter_.reset(new internal::OverlayEventFilter);
 777   AddPreTargetHandler(overlay_filter_.get());
 778   AddShellObserver(overlay_filter_.get());
 779
 780   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 781       root_window->GetDispatcher()->GetAcceleratedWidget()));
 782   AddPreTargetHandler(input_method_filter_.get());
 783
 784   accelerator_filter_.reset(new internal::AcceleratorFilter);
 785   AddPreTargetHandler(accelerator_filter_.get());
 786
 787   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 788   AddPreTargetHandler(event_transformation_handler_.get());
 789
 790   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 791   AddPreTargetHandler(system_gesture_filter_.get());
 792
 793   keyboard_metrics_filter_.reset(new internal::KeyboardUMAEventFilter);
 794   AddPreTargetHandler(keyboard_metrics_filter_.get());
 795
 796   // The keyboard system must be initialized before the RootWindowController is
 797   // created.
 798   if (keyboard::IsKeyboardEnabled())
 799     keyboard::InitializeKeyboard();
 800
 801   lock_state_controller_.reset(new LockStateController);
 802   power_button_controller_.reset(new PowerButtonController(
 803       lock_state_controller_.get()));
 804   AddShellObserver(lock_state_controller_.get());
 805
 806   drag_drop_controller_.reset(new internal::DragDropController);
 807   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 808   PrependPreTargetHandler(mouse_cursor_filter_.get());
 809
 810   // Create Controllers that may need root window.
 811   // TODO(oshima): Move as many controllers before creating
 812   // RootWindowController as possible.
 813   visibility_controller_.reset(new AshVisibilityController);
 814   user_action_client_.reset(delegate_->CreateUserActionClient());
 815
 816   magnification_controller_.reset(
 817       MagnificationController::CreateInstance());
 818   mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
 819
 820   partial_magnification_controller_.reset(
 821       new PartialMagnificationController());
 822
 823   autoclick_controller_.reset(AutoclickController::CreateInstance());
 824
 825   high_contrast_controller_.reset(new HighContrastController);
 826   video_detector_.reset(new VideoDetector);
 827   window_cycle_controller_.reset(new WindowCycleController());
 828   window_selector_controller_.reset(new WindowSelectorController());
 829
 830   tooltip_controller_.reset(
 831       new views::corewm::TooltipController(
 832           scoped_ptr<views::corewm::Tooltip>(
 833               new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
 834   AddPreTargetHandler(tooltip_controller_.get());
 835
 836   event_client_.reset(new internal::EventClientImpl);
 837
 838   // This controller needs to be set before SetupManagedWindowMode.
 839   desktop_background_controller_.reset(new DesktopBackgroundController());
 840   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 841
 842   // StatusAreaWidget uses Shell's CapsLockDelegate.
 843   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 844
 845   session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
 846   accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
 847   new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
 848   media_delegate_.reset(delegate_->CreateMediaDelegate());
 849
 850   if (!command_line->HasSwitch(views::corewm::switches::kNoDropShadows)) {
 851     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 852     shadow_controller_.reset(
 853         new views::corewm::ShadowController(activation_client_));
 854   }
 855
 856   // Create system_tray_notifier_ before the delegate.
 857   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 858
 859   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 860   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 861   DCHECK(system_tray_delegate_.get());
 862
 863   locale_notification_controller_.reset(
 864       new internal::LocaleNotificationController);
 865
 866   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 867   system_tray_delegate_->Initialize();
 868
 869   // TODO(oshima): Initialize all RootWindowControllers once, and
 870   // initialize controller/delegates above when initializing the
 871   // primary root window controller.
 872   internal::RootWindowController::CreateForPrimaryDisplay(
 873       root_window->GetDispatcher());
 874
 875   display_controller_->InitSecondaryDisplays();
 876
 877   // It needs to be created after RootWindowController has been created
 878   // (which calls OnWindowResized has been called, otherwise the
 879   // widget will not paint when restoring after a browser crash.  Also it needs
 880   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 881   // the correct size.
 882   user_wallpaper_delegate_->InitializeWallpaper();
 883
 884   if (initially_hide_cursor_)
 885     cursor_manager_.HideCursor();
 886   cursor_manager_.SetCursor(ui::kCursorPointer);
 887
 888   if (!cursor_manager_.IsCursorVisible()) {
 889     // Cursor might have been hidden by something other than chrome.
 890     // Let the first mouse event show the cursor.
 891     env_filter_->set_cursor_hidden_by_filter(true);
 892   }
 893
 894 #if defined(OS_CHROMEOS)
 895   // Set accelerator controller delegates.
 896   accelerator_controller_->SetBrightnessControlDelegate(
 897       scoped_ptr<ash::BrightnessControlDelegate>(
 898           new ash::system::BrightnessControllerChromeos).Pass());
 899
 900   power_event_observer_.reset(new internal::PowerEventObserver());
 901   user_activity_notifier_.reset(
 902       new internal::UserActivityNotifier(user_activity_detector_.get()));
 903   video_activity_notifier_.reset(
 904       new internal::VideoActivityNotifier(video_detector_.get()));
 905 #endif
 906
 907   weak_display_manager_factory_.reset(
 908       new base::WeakPtrFactory<internal::DisplayManager>(
 909           display_manager_.get()));
 910   // The compositor thread and main message loop have to be running in
 911   // order to create mirror window. Run it after the main message loop
 912   // is started.
 913   base::MessageLoopForUI::current()->PostTask(
 914       FROM_HERE,
 915       base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
 916                  weak_display_manager_factory_->GetWeakPtr()));
 917 }
 918
 919 void Shell::InitKeyboard(internal::RootWindowController* root) {
 920   if (keyboard::IsKeyboardEnabled()) {
 921     if (keyboard_controller_.get()) {
 922       RootWindowControllerList controllers = GetAllRootWindowControllers();
 923       for (RootWindowControllerList::iterator iter = controllers.begin();
 924            iter != controllers.end(); ++iter) {
 925         (*iter)->DeactivateKeyboard(keyboard_controller_.get());
 926       }
 927     }
 928     keyboard::KeyboardControllerProxy* proxy =
 929         delegate_->CreateKeyboardControllerProxy();
 930     keyboard_controller_.reset(
 931         new keyboard::KeyboardController(proxy));
 932   }
 933 }
 934
 935 void Shell::InitRootWindow(aura::RootWindow* root_window) {
 936   DCHECK(activation_client_);
 937   DCHECK(visibility_controller_.get());
 938   DCHECK(drag_drop_controller_.get());
 939   DCHECK(window_cycle_controller_.get());
 940
 941   aura::client::SetFocusClient(root_window, focus_client_.get());
 942   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 943   aura::client::SetActivationClient(root_window, activation_client_);
 944   views::corewm::FocusController* focus_controller =
 945       static_cast<views::corewm::FocusController*>(activation_client_);
 946   root_window->AddPreTargetHandler(focus_controller);
 947   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
 948   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
 949   aura::client::SetScreenPositionClient(root_window,
 950                                         screen_position_controller_.get());
 951   aura::client::SetCursorClient(root_window, &cursor_manager_);
 952   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
 953   aura::client::SetEventClient(root_window, event_client_.get());
 954
 955   if (nested_dispatcher_controller_) {
 956     aura::client::SetDispatcherClient(root_window,
 957                                       nested_dispatcher_controller_.get());
 958   }
 959   if (user_action_client_)
 960     aura::client::SetUserActionClient(root_window, user_action_client_.get());
 961 }
 962
 963 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
 964   RootWindowControllerList controllers = GetAllRootWindowControllers();
 965   for (RootWindowControllerList::iterator iter = controllers.begin();
 966        iter != controllers.end(); ++iter) {
 967     internal::SystemModalContainerLayoutManager* layout_manager =
 968         (*iter)->GetSystemModalLayoutManager(window);
 969     if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
 970       return true;
 971   }
 972   return false;
 973 }
 974
 975 ////////////////////////////////////////////////////////////////////////////////
 976 // Shell, ui::EventTarget overrides:
 977
 978 bool Shell::CanAcceptEvent(const ui::Event& event) {
 979   return true;
 980 }
 981
 982 ui::EventTarget* Shell::GetParentTarget() {
 983   return NULL;
 984 }
 985
 986 void Shell::OnEvent(ui::Event* event) {
 987 }
 988
 989 ////////////////////////////////////////////////////////////////////////////////
 990 // Shell, aura::client::ActivationChangeObserver implementation:
 991
 992 void Shell::OnWindowActivated(aura::Window* gained_active,
 993                               aura::Window* lost_active) {
 994   if (gained_active)
 995     target_root_window_ = gained_active->GetRootWindow();
 996 }
 997
 998 }  // namespace ash