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/cursor_window_controller.h"
  21 #include "ash/display/display_controller.h"
  22 #include "ash/display/display_manager.h"
  23 #include "ash/display/event_transformation_handler.h"
  24 #include "ash/display/mouse_cursor_event_filter.h"
  25 #include "ash/display/screen_position_controller.h"
  26 #include "ash/display/virtual_keyboard_window_controller.h"
  27 #include "ash/drag_drop/drag_drop_controller.h"
  28 #include "ash/first_run/first_run_helper_impl.h"
  29 #include "ash/focus_cycler.h"
  30 #include "ash/gpu_support.h"
  31 #include "ash/high_contrast/high_contrast_controller.h"
  32 #include "ash/host/window_tree_host_factory.h"
  33 #include "ash/keyboard_uma_event_filter.h"
  34 #include "ash/magnifier/magnification_controller.h"
  35 #include "ash/magnifier/partial_magnification_controller.h"
  36 #include "ash/media_delegate.h"
  37 #include "ash/new_window_delegate.h"
  38 #include "ash/root_window_controller.h"
  39 #include "ash/session_state_delegate.h"
  40 #include "ash/shelf/app_list_shelf_item_delegate.h"
  41 #include "ash/shelf/shelf_delegate.h"
  42 #include "ash/shelf/shelf_item_delegate.h"
  43 #include "ash/shelf/shelf_item_delegate_manager.h"
  44 #include "ash/shelf/shelf_layout_manager.h"
  45 #include "ash/shelf/shelf_model.h"
  46 #include "ash/shelf/shelf_widget.h"
  47 #include "ash/shelf/shelf_window_watcher.h"
  48 #include "ash/shell_delegate.h"
  49 #include "ash/shell_factory.h"
  50 #include "ash/shell_window_ids.h"
  51 #include "ash/system/locale/locale_notification_controller.h"
  52 #include "ash/system/status_area_widget.h"
  53 #include "ash/system/tray/system_tray_delegate.h"
  54 #include "ash/system/tray/system_tray_notifier.h"
  55 #include "ash/wm/app_list_controller.h"
  56 #include "ash/wm/ash_focus_rules.h"
  57 #include "ash/wm/ash_native_cursor_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/lock_state_controller.h"
  62 #include "ash/wm/maximize_mode/maximize_mode_window_manager.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/toplevel_window_event_handler.h"
  74 #include "ash/wm/user_activity_detector.h"
  75 #include "ash/wm/video_detector.h"
  76 #include "ash/wm/window_animations.h"
  77 #include "ash/wm/window_cycle_controller.h"
  78 #include "ash/wm/window_positioner.h"
  79 #include "ash/wm/window_properties.h"
  80 #include "ash/wm/window_util.h"
  81 #include "ash/wm/workspace_controller.h"
  82 #include "base/bind.h"
  83 #include "base/command_line.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/window.h"
  90 #include "ui/aura/window_event_dispatcher.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/events/event_target_iterator.h"
  95 #include "ui/gfx/display.h"
  96 #include "ui/gfx/image/image_skia.h"
  97 #include "ui/gfx/screen.h"
  98 #include "ui/gfx/size.h"
  99 #include "ui/keyboard/keyboard.h"
 100 #include "ui/keyboard/keyboard_controller.h"
 101 #include "ui/keyboard/keyboard_switches.h"
 102 #include "ui/keyboard/keyboard_util.h"
 103 #include "ui/message_center/message_center.h"
 104 #include "ui/views/corewm/compound_event_filter.h"
 105 #include "ui/views/corewm/corewm_switches.h"
 106 #include "ui/views/corewm/focus_controller.h"
 107 #include "ui/views/corewm/input_method_event_filter.h"
 108 #include "ui/views/corewm/shadow_controller.h"
 109 #include "ui/views/corewm/tooltip_aura.h"
 110 #include "ui/views/corewm/tooltip_controller.h"
 111 #include "ui/views/corewm/visibility_controller.h"
 112 #include "ui/views/corewm/window_modality_controller.h"
 113 #include "ui/views/focus/focus_manager_factory.h"
 114 #include "ui/views/widget/native_widget_aura.h"
 115 #include "ui/views/widget/widget.h"
 116
 117 #if defined(OS_CHROMEOS)
 118 #if defined(USE_X11)
 119 #include "ash/accelerators/magnifier_key_scroller.h"
 120 #include "ash/accelerators/spoken_feedback_toggler.h"
 121 #include "ash/ash_constants.h"
 122 #include "ash/display/display_change_observer_chromeos.h"
 123 #include "ash/display/display_error_observer_chromeos.h"
 124 #include "ash/display/output_configurator_animation.h"
 125 #include "ash/display/projecting_observer_chromeos.h"
 126 #include "base/message_loop/message_pump_x11.h"
 127 #include "base/sys_info.h"
 128 #include "chromeos/display/output_configurator.h"
 129 #endif  // defined(USE_X11)
 130 #include "ash/display/resolution_notification_controller.h"
 131 #include "ash/sticky_keys/sticky_keys_controller.h"
 132 #include "ash/system/chromeos/brightness/brightness_controller_chromeos.h"
 133 #include "ash/system/chromeos/power/power_event_observer.h"
 134 #include "ash/system/chromeos/power/power_status.h"
 135 #include "ash/system/chromeos/power/user_activity_notifier.h"
 136 #include "ash/system/chromeos/power/video_activity_notifier.h"
 137 #endif  // defined(OS_CHROMEOS)
 138
 139 namespace ash {
 140
 141 namespace {
 142
 143 using aura::Window;
 144 using views::Widget;
 145
 146 // A Corewm VisibilityController subclass that calls the Ash animation routine
 147 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 148 class AshVisibilityController : public views::corewm::VisibilityController {
 149  public:
 150   AshVisibilityController() {}
 151   virtual ~AshVisibilityController() {}
 152
 153  private:
 154   // Overridden from views::corewm::VisibilityController:
 155   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 156       aura::Window* window,
 157       bool visible) OVERRIDE {
 158     return AnimateOnChildWindowVisibilityChanged(window, visible);
 159   }
 160
 161   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 162 };
 163
 164 }  // namespace
 165
 166 // static
 167 Shell* Shell::instance_ = NULL;
 168 // static
 169 bool Shell::initially_hide_cursor_ = false;
 170
 171 ////////////////////////////////////////////////////////////////////////////////
 172 // Shell, public:
 173
 174 // static
 175 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 176   CHECK(!instance_);
 177   instance_ = new Shell(delegate);
 178   instance_->Init();
 179   return instance_;
 180 }
 181
 182 // static
 183 Shell* Shell::GetInstance() {
 184   DCHECK(instance_);
 185   return instance_;
 186 }
 187
 188 // static
 189 bool Shell::HasInstance() {
 190   return !!instance_;
 191 }
 192
 193 // static
 194 void Shell::DeleteInstance() {
 195   delete instance_;
 196   instance_ = NULL;
 197 }
 198
 199 // static
 200 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 201   return internal::GetRootWindowController(GetPrimaryRootWindow());
 202 }
 203
 204 // static
 205 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 206   return Shell::GetInstance()->display_controller()->
 207       GetAllRootWindowControllers();
 208 }
 209
 210 // static
 211 aura::Window* Shell::GetPrimaryRootWindow() {
 212   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 213 }
 214
 215 // static
 216 aura::Window* Shell::GetTargetRootWindow() {
 217   Shell* shell = GetInstance();
 218   if (shell->scoped_target_root_window_)
 219     return shell->scoped_target_root_window_;
 220   return shell->target_root_window_;
 221 }
 222
 223 // static
 224 gfx::Screen* Shell::GetScreen() {
 225   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 226 }
 227
 228 // static
 229 aura::Window::Windows Shell::GetAllRootWindows() {
 230   return Shell::GetInstance()->display_controller()->
 231       GetAllRootWindows();
 232 }
 233
 234 // static
 235 aura::Window* Shell::GetContainer(aura::Window* root_window,
 236                                   int container_id) {
 237   return root_window->GetChildById(container_id);
 238 }
 239
 240 // static
 241 const aura::Window* Shell::GetContainer(const aura::Window* root_window,
 242                                         int container_id) {
 243   return root_window->GetChildById(container_id);
 244 }
 245
 246 // static
 247 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 248     int container_id,
 249     aura::Window* priority_root) {
 250   std::vector<aura::Window*> containers;
 251   aura::Window::Windows root_windows = GetAllRootWindows();
 252   for (aura::Window::Windows::const_iterator it = root_windows.begin();
 253        it != root_windows.end(); ++it) {
 254     aura::Window* container = (*it)->GetChildById(container_id);
 255     if (container) {
 256       if (priority_root && priority_root->Contains(container))
 257         containers.insert(containers.begin(), container);
 258       else
 259         containers.push_back(container);
 260     }
 261   }
 262   return containers;
 263 }
 264
 265 void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
 266                             ui::MenuSourceType source_type) {
 267   // No context menus if there is no session with an active user.
 268   if (!session_state_delegate_->NumberOfLoggedInUsers())
 269     return;
 270   // No context menus when screen is locked.
 271   if (session_state_delegate_->IsScreenLocked())
 272     return;
 273
 274   aura::Window* root =
 275       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 276   internal::GetRootWindowController(root)->
 277       ShowContextMenu(location_in_screen, source_type);
 278 }
 279
 280 void Shell::ToggleAppList(aura::Window* window) {
 281   // If the context window is not given, show it on the target root window.
 282   if (!window)
 283     window = GetTargetRootWindow();
 284   if (!app_list_controller_)
 285     app_list_controller_.reset(new internal::AppListController);
 286   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 287 }
 288
 289 bool Shell::GetAppListTargetVisibility() const {
 290   return app_list_controller_.get() &&
 291       app_list_controller_->GetTargetVisibility();
 292 }
 293
 294 aura::Window* Shell::GetAppListWindow() {
 295   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 296 }
 297
 298 app_list::AppListView* Shell::GetAppListView() {
 299   return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
 300 }
 301
 302 bool Shell::IsSystemModalWindowOpen() const {
 303   if (simulate_modal_window_open_for_testing_)
 304     return true;
 305   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 306       internal::kShellWindowId_SystemModalContainer, NULL);
 307   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 308        cit != containers.end(); ++cit) {
 309     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 310          wit != (*cit)->children().end(); ++wit) {
 311       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 312           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 313         return true;
 314       }
 315     }
 316   }
 317   return false;
 318 }
 319
 320 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 321     views::Widget* widget) {
 322   // Use translucent-style window frames for dialogs.
 323   return new CustomFrameViewAsh(widget);
 324 }
 325
 326 void Shell::RotateFocus(Direction direction) {
 327   focus_cycler_->RotateFocus(
 328       direction == FORWARD ? internal::FocusCycler::FORWARD :
 329                              internal::FocusCycler::BACKWARD);
 330 }
 331
 332 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 333                                      const gfx::Insets& insets) {
 334   if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
 335           contains, insets)) {
 336     return;
 337   }
 338   FOR_EACH_OBSERVER(ShellObserver, observers_,
 339                     OnDisplayWorkAreaInsetsChanged());
 340 }
 341
 342 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 343   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 344 }
 345
 346 void Shell::OnLoginUserProfilePrepared() {
 347   CreateShelf();
 348   CreateKeyboard();
 349 }
 350
 351 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 352   RootWindowControllerList controllers = GetAllRootWindowControllers();
 353   for (RootWindowControllerList::iterator iter = controllers.begin();
 354        iter != controllers.end(); ++iter)
 355     (*iter)->UpdateAfterLoginStatusChange(status);
 356 }
 357
 358 void Shell::OnAppTerminating() {
 359   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 360 }
 361
 362 void Shell::OnLockStateChanged(bool locked) {
 363   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 364 #ifndef NDEBUG
 365   // Make sure that there is no system modal in Lock layer when unlocked.
 366   if (!locked) {
 367     std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 368         internal::kShellWindowId_LockSystemModalContainer,
 369         GetPrimaryRootWindow());
 370     for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
 371          iter != containers.end(); ++iter) {
 372       DCHECK_EQ(0u, (*iter)->children().size());
 373     }
 374   }
 375 #endif
 376 }
 377
 378 void Shell::OnCastingSessionStartedOrStopped(bool started) {
 379 #if defined(OS_CHROMEOS) && defined(USE_X11)
 380   if (projecting_observer_)
 381     projecting_observer_->OnCastingSessionStartedOrStopped(started);
 382 #endif
 383 }
 384
 385 void Shell::CreateShelf() {
 386   RootWindowControllerList controllers = GetAllRootWindowControllers();
 387   for (RootWindowControllerList::iterator iter = controllers.begin();
 388        iter != controllers.end(); ++iter)
 389     (*iter)->shelf()->CreateShelf();
 390 }
 391
 392 void Shell::CreateKeyboard() {
 393   // TODO(bshe): Primary root window controller may not be the controller to
 394   // attach virtual keyboard. See http://crbug.com/303429
 395   InitKeyboard();
 396   if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 397     display_controller()->virtual_keyboard_window_controller()->
 398         ActivateKeyboard(keyboard_controller_.get());
 399   } else {
 400     GetPrimaryRootWindowController()->
 401         ActivateKeyboard(keyboard_controller_.get());
 402   }
 403 }
 404
 405 void Shell::DeactivateKeyboard() {
 406   if (keyboard_controller_.get()) {
 407     RootWindowControllerList controllers = GetAllRootWindowControllers();
 408     for (RootWindowControllerList::iterator iter = controllers.begin();
 409         iter != controllers.end(); ++iter) {
 410       (*iter)->DeactivateKeyboard(keyboard_controller_.get());
 411     }
 412   }
 413   keyboard_controller_.reset();
 414 }
 415
 416 void Shell::ShowShelf() {
 417   RootWindowControllerList controllers = GetAllRootWindowControllers();
 418   for (RootWindowControllerList::iterator iter = controllers.begin();
 419        iter != controllers.end(); ++iter)
 420     (*iter)->ShowShelf();
 421 }
 422
 423 void Shell::AddShellObserver(ShellObserver* observer) {
 424   observers_.AddObserver(observer);
 425 }
 426
 427 void Shell::RemoveShellObserver(ShellObserver* observer) {
 428   observers_.RemoveObserver(observer);
 429 }
 430
 431 void Shell::EnableMaximizeModeWindowManager(bool enable) {
 432   if (enable && !maximize_mode_window_manager_.get()) {
 433     maximize_mode_window_manager_.reset(
 434         new internal::MaximizeModeWindowManager());
 435   } else if (!enable && maximize_mode_window_manager_.get()) {
 436     maximize_mode_window_manager_.reset();
 437   }
 438 }
 439
 440 bool Shell::IsMaximizeModeWindowManagerEnabled() {
 441   return maximize_mode_window_manager_.get() != NULL;
 442 }
 443
 444 void Shell::UpdateShelfVisibility() {
 445   RootWindowControllerList controllers = GetAllRootWindowControllers();
 446   for (RootWindowControllerList::iterator iter = controllers.begin();
 447        iter != controllers.end(); ++iter)
 448     if ((*iter)->shelf())
 449       (*iter)->UpdateShelfVisibility();
 450 }
 451
 452 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 453                                      aura::Window* root_window) {
 454   ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 455       SetAutoHideBehavior(behavior);
 456 }
 457
 458 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 459     aura::Window* root_window) const {
 460   return ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 461       auto_hide_behavior();
 462 }
 463
 464 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 465                               aura::Window* root_window) {
 466   if (ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 467       SetAlignment(alignment)) {
 468     FOR_EACH_OBSERVER(
 469         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 470   }
 471 }
 472
 473 ShelfAlignment Shell::GetShelfAlignment(aura::Window* root_window) {
 474   return internal::GetRootWindowController(root_window)->
 475       GetShelfLayoutManager()->GetAlignment();
 476 }
 477
 478 void Shell::SetDimming(bool should_dim) {
 479   RootWindowControllerList controllers = GetAllRootWindowControllers();
 480   for (RootWindowControllerList::iterator iter = controllers.begin();
 481        iter != controllers.end(); ++iter)
 482     (*iter)->screen_dimmer()->SetDimming(should_dim);
 483 }
 484
 485 void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
 486                                         aura::Window* root_window) {
 487   FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
 488       is_fullscreen, root_window));
 489 }
 490
 491 void Shell::CreateModalBackground(aura::Window* window) {
 492   if (!modality_filter_) {
 493     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 494     AddPreTargetHandler(modality_filter_.get());
 495   }
 496   RootWindowControllerList controllers = GetAllRootWindowControllers();
 497   for (RootWindowControllerList::iterator iter = controllers.begin();
 498        iter != controllers.end(); ++iter)
 499     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 500 }
 501
 502 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 503   RootWindowControllerList controllers = GetAllRootWindowControllers();
 504   bool activated = false;
 505   for (RootWindowControllerList::iterator iter = controllers.begin();
 506        iter != controllers.end() && !activated; ++iter) {
 507     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 508         ActivateNextModalWindow();
 509   }
 510   if (!activated) {
 511     RemovePreTargetHandler(modality_filter_.get());
 512     modality_filter_.reset();
 513     for (RootWindowControllerList::iterator iter = controllers.begin();
 514          iter != controllers.end(); ++iter)
 515       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 516   }
 517 }
 518
 519 WebNotificationTray* Shell::GetWebNotificationTray() {
 520   return GetPrimaryRootWindowController()->shelf()->
 521       status_area_widget()->web_notification_tray();
 522 }
 523
 524 bool Shell::HasPrimaryStatusArea() {
 525   ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
 526   return shelf && shelf->status_area_widget();
 527 }
 528
 529 SystemTray* Shell::GetPrimarySystemTray() {
 530   return GetPrimaryRootWindowController()->GetSystemTray();
 531 }
 532
 533 ShelfDelegate* Shell::GetShelfDelegate() {
 534   if (!shelf_delegate_) {
 535     shelf_model_.reset(new ShelfModel);
 536     // Creates ShelfItemDelegateManager before ShelfDelegate.
 537     shelf_item_delegate_manager_.reset(
 538         new ShelfItemDelegateManager(shelf_model_.get()));
 539
 540     shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
 541     scoped_ptr<ShelfItemDelegate> controller(
 542         new internal::AppListShelfItemDelegate);
 543
 544     // Finding the shelf model's location of the app list and setting its
 545     // ShelfItemDelegate.
 546     int app_list_index = shelf_model_->GetItemIndexForType(TYPE_APP_LIST);
 547     DCHECK_GE(app_list_index, 0);
 548     ShelfID app_list_id = shelf_model_->items()[app_list_index].id;
 549     DCHECK(app_list_id);
 550     shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
 551                                                        controller.Pass());
 552     shelf_window_watcher_.reset(new internal::ShelfWindowWatcher(
 553                                         shelf_model_.get(),
 554                                         shelf_item_delegate_manager_.get()));
 555   }
 556   return shelf_delegate_.get();
 557 }
 558
 559 void Shell::SetTouchHudProjectionEnabled(bool enabled) {
 560   if (is_touch_hud_projection_enabled_ == enabled)
 561     return;
 562
 563   is_touch_hud_projection_enabled_ = enabled;
 564   FOR_EACH_OBSERVER(ShellObserver, observers_,
 565                     OnTouchHudProjectionToggled(enabled));
 566 }
 567
 568 #if defined(OS_CHROMEOS)
 569 ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
 570   return new ash::FirstRunHelperImpl;
 571 }
 572
 573 void Shell::SetCursorCompositingEnabled(bool enabled) {
 574   display_controller_->cursor_window_controller()->SetCursorCompositingEnabled(
 575       enabled);
 576   native_cursor_manager_->SetNativeCursorEnabled(!enabled);
 577 }
 578 #endif  // defined(OS_CHROMEOS)
 579
 580 void Shell::DoInitialWorkspaceAnimation() {
 581   return GetPrimaryRootWindowController()->workspace_controller()->
 582       DoInitialAnimation();
 583 }
 584
 585 ////////////////////////////////////////////////////////////////////////////////
 586 // Shell, private:
 587
 588 Shell::Shell(ShellDelegate* delegate)
 589     : target_root_window_(NULL),
 590       scoped_target_root_window_(NULL),
 591       delegate_(delegate),
 592       window_positioner_(new WindowPositioner),
 593       activation_client_(NULL),
 594 #if defined(OS_CHROMEOS) && defined(USE_X11)
 595       output_configurator_(new chromeos::OutputConfigurator()),
 596 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 597       native_cursor_manager_(new AshNativeCursorManager),
 598       cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
 599           native_cursor_manager_)),
 600       simulate_modal_window_open_for_testing_(false),
 601       is_touch_hud_projection_enabled_(false) {
 602   DCHECK(delegate_.get());
 603   gpu_support_.reset(delegate_->CreateGPUSupport());
 604   display_manager_.reset(new internal::DisplayManager);
 605   display_controller_.reset(new DisplayController);
 606 #if defined(OS_CHROMEOS) && defined(USE_X11)
 607   // TODO: Move this initialization into Shell::Init().
 608   output_configurator_->Init(!gpu_support_->IsPanelFittingDisabled());
 609   user_metrics_recorder_.reset(new UserMetricsRecorder);
 610 #endif  // defined(OS_CHROMEOS)
 611
 612 #if defined(OS_CHROMEOS)
 613   internal::PowerStatus::Initialize();
 614 #endif
 615 }
 616
 617 Shell::~Shell() {
 618   TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
 619
 620   views::FocusManagerFactory::Install(NULL);
 621
 622   // Remove the focus from any window. This will prevent overhead and side
 623   // effects (e.g. crashes) from changing focus during shutdown.
 624   // See bug crbug.com/134502.
 625   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
 626
 627   // Please keep in same order as in Init() because it's easy to miss one.
 628   if (window_modality_controller_)
 629     window_modality_controller_.reset();
 630 #if defined(OS_CHROMEOS) && defined(USE_X11)
 631   RemovePreTargetHandler(magnifier_key_scroll_handler_.get());
 632   magnifier_key_scroll_handler_.reset();
 633
 634   RemovePreTargetHandler(speech_feedback_handler_.get());
 635   speech_feedback_handler_.reset();
 636 #endif
 637   RemovePreTargetHandler(user_activity_detector_.get());
 638   RemovePreTargetHandler(overlay_filter_.get());
 639   RemovePreTargetHandler(input_method_filter_.get());
 640   RemovePreTargetHandler(accelerator_filter_.get());
 641   RemovePreTargetHandler(event_transformation_handler_.get());
 642   RemovePreTargetHandler(toplevel_window_event_handler_.get());
 643   RemovePostTargetHandler(toplevel_window_event_handler_.get());
 644   RemovePreTargetHandler(system_gesture_filter_.get());
 645   RemovePreTargetHandler(keyboard_metrics_filter_.get());
 646   if (mouse_cursor_filter_)
 647     RemovePreTargetHandler(mouse_cursor_filter_.get());
 648
 649   // TooltipController is deleted with the Shell so removing its references.
 650   RemovePreTargetHandler(tooltip_controller_.get());
 651
 652   // AppList needs to be released before shelf layout manager, which is
 653   // destroyed with shelf container in the loop below. However, app list
 654   // container is now on top of shelf container and released after it.
 655   // TODO(xiyuan): Move it back when app list container is no longer needed.
 656   app_list_controller_.reset();
 657
 658   // Destroy SystemTrayDelegate before destroying the status area(s).
 659   system_tray_delegate_->Shutdown();
 660   system_tray_delegate_.reset();
 661
 662   locale_notification_controller_.reset();
 663
 664   // Drag-and-drop must be canceled prior to close all windows.
 665   drag_drop_controller_.reset();
 666
 667   // Controllers who have WindowObserver added must be deleted
 668   // before |display_controller_| is deleted.
 669
 670 #if defined(OS_CHROMEOS)
 671   // VideoActivityNotifier must be deleted before |video_detector_| is
 672   // deleted because it's observing video activity through
 673   // VideoDetectorObserver interface.
 674   video_activity_notifier_.reset();
 675 #endif  // defined(OS_CHROMEOS)
 676   video_detector_.reset();
 677
 678   shadow_controller_.reset();
 679   resize_shadow_controller_.reset();
 680
 681   window_selector_controller_.reset();
 682   window_cycle_controller_.reset();
 683   mru_window_tracker_.reset();
 684
 685   // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
 686   // and has window observers.
 687   shelf_window_watcher_.reset();
 688
 689   // Destroy all child windows including widgets.
 690   display_controller_->CloseChildWindows();
 691   display_controller_->CloseNonDesktopDisplay();
 692
 693   // Chrome implementation of shelf delegate depends on FocusClient,
 694   // so must be deleted before |focus_client_|.
 695   shelf_delegate_.reset();
 696   focus_client_.reset();
 697
 698   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 699   // needs to remove observers from it.
 700   system_tray_notifier_.reset();
 701
 702   // These need a valid Shell instance to clean up properly, so explicitly
 703   // delete them before invalidating the instance.
 704   // Alphabetical. TODO(oshima): sort.
 705   magnification_controller_.reset();
 706   partial_magnification_controller_.reset();
 707   tooltip_controller_.reset();
 708   event_client_.reset();
 709   nested_dispatcher_controller_.reset();
 710   toplevel_window_event_handler_.reset();
 711   user_action_client_.reset();
 712   visibility_controller_.reset();
 713   // |shelf_item_delegate_manager_| observes |shelf_model_|. It must be
 714   // destroyed before |shelf_model_| is destroyed.
 715   shelf_item_delegate_manager_.reset();
 716   shelf_model_.reset();
 717
 718   power_button_controller_.reset();
 719   lock_state_controller_.reset();
 720
 721 #if defined(OS_CHROMEOS)
 722   resolution_notification_controller_.reset();
 723 #endif
 724   desktop_background_controller_.reset();
 725
 726   // This also deletes all RootWindows. Note that we invoke Shutdown() on
 727   // DisplayController before resetting |display_controller_|, since destruction
 728   // of its owned RootWindowControllers relies on the value.
 729   display_manager_->CreateScreenForShutdown();
 730   display_controller_->Shutdown();
 731   display_controller_.reset();
 732   screen_position_controller_.reset();
 733
 734   keyboard_controller_.reset();
 735   accessibility_delegate_.reset();
 736   new_window_delegate_.reset();
 737   media_delegate_.reset();
 738
 739 #if defined(OS_CHROMEOS) && defined(USE_X11)
 740   if (display_change_observer_)
 741     output_configurator_->RemoveObserver(display_change_observer_.get());
 742   if (output_configurator_animation_)
 743     output_configurator_->RemoveObserver(output_configurator_animation_.get());
 744   if (display_error_observer_)
 745     output_configurator_->RemoveObserver(display_error_observer_.get());
 746   if (projecting_observer_)
 747     output_configurator_->RemoveObserver(projecting_observer_.get());
 748   display_change_observer_.reset();
 749 #endif  // defined(OS_CHROMEOS)
 750
 751 #if defined(OS_CHROMEOS)
 752   internal::PowerStatus::Shutdown();
 753 #endif
 754
 755   DCHECK(instance_ == this);
 756   instance_ = NULL;
 757 }
 758
 759 void Shell::Init() {
 760   CommandLine* command_line = CommandLine::ForCurrentProcess();
 761
 762   delegate_->PreInit();
 763   if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 764     display_manager_->SetSecondDisplayMode(
 765         internal::DisplayManager::VIRTUAL_KEYBOARD);
 766   }
 767   bool display_initialized = display_manager_->InitFromCommandLine();
 768 #if defined(OS_CHROMEOS) && defined(USE_X11)
 769   output_configurator_animation_.reset(
 770       new internal::OutputConfiguratorAnimation());
 771   output_configurator_->AddObserver(output_configurator_animation_.get());
 772
 773   projecting_observer_.reset(new internal::ProjectingObserver());
 774   output_configurator_->AddObserver(projecting_observer_.get());
 775
 776   if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
 777     display_change_observer_.reset(new internal::DisplayChangeObserver);
 778     // Register |display_change_observer_| first so that the rest of
 779     // observer gets invoked after the root windows are configured.
 780     output_configurator_->AddObserver(display_change_observer_.get());
 781     display_error_observer_.reset(new internal::DisplayErrorObserver());
 782     output_configurator_->AddObserver(display_error_observer_.get());
 783     output_configurator_->set_state_controller(display_change_observer_.get());
 784     output_configurator_->set_mirroring_controller(display_manager_.get());
 785     output_configurator_->Start(
 786         delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
 787     display_initialized = true;
 788   }
 789 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 790   if (!display_initialized)
 791     display_manager_->InitDefaultDisplay();
 792
 793   // Install the custom factory first so that views::FocusManagers for Tray,
 794   // Shelf, and WallPaper could be created by the factory.
 795   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 796
 797   // Env creates the compositor. Historically it seems to have been implicitly
 798   // initialized first by the ActivationController, but now that FocusController
 799   // no longer does this we need to do it explicitly.
 800   aura::Env::CreateInstance();
 801
 802   // The WindowModalityController needs to be at the front of the input event
 803   // pretarget handler list to ensure that it processes input events when modal
 804   // windows are active.
 805   window_modality_controller_.reset(
 806       new views::corewm::WindowModalityController(this));
 807
 808   AddPreTargetHandler(this);
 809
 810   env_filter_.reset(new views::corewm::CompoundEventFilter);
 811   AddPreTargetHandler(env_filter_.get());
 812
 813   views::corewm::FocusController* focus_controller =
 814       new views::corewm::FocusController(new wm::AshFocusRules);
 815   focus_client_.reset(focus_controller);
 816   activation_client_ = focus_controller;
 817   activation_client_->AddObserver(this);
 818   focus_cycler_.reset(new internal::FocusCycler());
 819
 820   screen_position_controller_.reset(new internal::ScreenPositionController);
 821   window_tree_host_factory_.reset(delegate_->CreateWindowTreeHostFactory());
 822
 823   display_controller_->Start();
 824   display_controller_->InitPrimaryDisplay();
 825   aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
 826   target_root_window_ = root_window;
 827
 828 #if defined(OS_CHROMEOS)
 829   resolution_notification_controller_.reset(
 830       new internal::ResolutionNotificationController);
 831 #endif
 832
 833   cursor_manager_.SetDisplay(GetScreen()->GetPrimaryDisplay());
 834
 835   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 836   accelerator_controller_.reset(new AcceleratorController);
 837
 838 #if defined(OS_CHROMEOS) && defined(USE_X11)
 839   magnifier_key_scroll_handler_ = MagnifierKeyScroller::CreateHandler().Pass();
 840   AddPreTargetHandler(magnifier_key_scroll_handler_.get());
 841   speech_feedback_handler_ = SpokenFeedbackToggler::CreateHandler().Pass();
 842   AddPreTargetHandler(speech_feedback_handler_.get());
 843 #endif
 844
 845   // The order in which event filters are added is significant.
 846
 847 #if defined(OS_CHROMEOS)
 848   // The StickyKeysController also rewrites events and must be added
 849   // before observers, but after the EventRewriterEventFilter.
 850   sticky_keys_controller_.reset(new StickyKeysController);
 851   AddPreTargetHandler(sticky_keys_controller_.get());
 852 #endif
 853
 854   // UserActivityDetector passes events to observers, so let them get
 855   // rewritten first.
 856   user_activity_detector_.reset(new UserActivityDetector);
 857   AddPreTargetHandler(user_activity_detector_.get());
 858
 859   overlay_filter_.reset(new internal::OverlayEventFilter);
 860   AddPreTargetHandler(overlay_filter_.get());
 861   AddShellObserver(overlay_filter_.get());
 862
 863   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 864       root_window->GetDispatcher()->host()->GetAcceleratedWidget()));
 865   AddPreTargetHandler(input_method_filter_.get());
 866
 867   accelerator_filter_.reset(new internal::AcceleratorFilter);
 868   AddPreTargetHandler(accelerator_filter_.get());
 869
 870   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 871   AddPreTargetHandler(event_transformation_handler_.get());
 872
 873   toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
 874
 875   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 876   AddPreTargetHandler(system_gesture_filter_.get());
 877
 878   keyboard_metrics_filter_.reset(new internal::KeyboardUMAEventFilter);
 879   AddPreTargetHandler(keyboard_metrics_filter_.get());
 880
 881   // The keyboard system must be initialized before the RootWindowController is
 882   // created.
 883 #if defined(OS_CHROMEOS)
 884     keyboard::InitializeKeyboard();
 885 #endif
 886
 887   lock_state_controller_.reset(new LockStateController);
 888   power_button_controller_.reset(new PowerButtonController(
 889       lock_state_controller_.get()));
 890   AddShellObserver(lock_state_controller_.get());
 891
 892   drag_drop_controller_.reset(new internal::DragDropController);
 893   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 894   PrependPreTargetHandler(mouse_cursor_filter_.get());
 895
 896   // Create Controllers that may need root window.
 897   // TODO(oshima): Move as many controllers before creating
 898   // RootWindowController as possible.
 899   visibility_controller_.reset(new AshVisibilityController);
 900   user_action_client_.reset(delegate_->CreateUserActionClient());
 901
 902   magnification_controller_.reset(
 903       MagnificationController::CreateInstance());
 904   mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
 905
 906   partial_magnification_controller_.reset(
 907       new PartialMagnificationController());
 908
 909   autoclick_controller_.reset(AutoclickController::CreateInstance());
 910
 911   high_contrast_controller_.reset(new HighContrastController);
 912   video_detector_.reset(new VideoDetector);
 913   window_cycle_controller_.reset(new WindowCycleController());
 914   window_selector_controller_.reset(new WindowSelectorController());
 915
 916   tooltip_controller_.reset(
 917       new views::corewm::TooltipController(
 918           scoped_ptr<views::corewm::Tooltip>(
 919               new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
 920   AddPreTargetHandler(tooltip_controller_.get());
 921
 922   event_client_.reset(new internal::EventClientImpl);
 923
 924   // This controller needs to be set before SetupManagedWindowMode.
 925   desktop_background_controller_.reset(new DesktopBackgroundController());
 926   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 927
 928   // StatusAreaWidget uses Shell's CapsLockDelegate.
 929   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 930
 931   session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
 932   accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
 933   new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
 934   media_delegate_.reset(delegate_->CreateMediaDelegate());
 935
 936   if (!command_line->HasSwitch(views::corewm::switches::kNoDropShadows)) {
 937     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 938     shadow_controller_.reset(
 939         new views::corewm::ShadowController(activation_client_));
 940   }
 941
 942   // Create system_tray_notifier_ before the delegate.
 943   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 944
 945   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 946   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 947   DCHECK(system_tray_delegate_.get());
 948
 949   locale_notification_controller_.reset(
 950       new internal::LocaleNotificationController);
 951
 952   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 953   system_tray_delegate_->Initialize();
 954
 955   // TODO(oshima): Initialize all RootWindowControllers once, and
 956   // initialize controller/delegates above when initializing the
 957   // primary root window controller.
 958   internal::RootWindowController::CreateForPrimaryDisplay(
 959       root_window->GetDispatcher());
 960
 961   display_controller_->InitSecondaryDisplays();
 962
 963   // It needs to be created after RootWindowController has been created
 964   // (which calls OnWindowResized has been called, otherwise the
 965   // widget will not paint when restoring after a browser crash.  Also it needs
 966   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 967   // the correct size.
 968   user_wallpaper_delegate_->InitializeWallpaper();
 969
 970   if (initially_hide_cursor_)
 971     cursor_manager_.HideCursor();
 972   cursor_manager_.SetCursor(ui::kCursorPointer);
 973
 974 #if defined(OS_CHROMEOS)
 975   // Set accelerator controller delegates.
 976   accelerator_controller_->SetBrightnessControlDelegate(
 977       scoped_ptr<ash::BrightnessControlDelegate>(
 978           new ash::system::BrightnessControllerChromeos).Pass());
 979
 980   power_event_observer_.reset(new internal::PowerEventObserver());
 981   user_activity_notifier_.reset(
 982       new internal::UserActivityNotifier(user_activity_detector_.get()));
 983   video_activity_notifier_.reset(
 984       new internal::VideoActivityNotifier(video_detector_.get()));
 985 #endif
 986
 987   weak_display_manager_factory_.reset(
 988       new base::WeakPtrFactory<internal::DisplayManager>(
 989           display_manager_.get()));
 990   // The compositor thread and main message loop have to be running in
 991   // order to create mirror window. Run it after the main message loop
 992   // is started.
 993   base::MessageLoopForUI::current()->PostTask(
 994       FROM_HERE,
 995       base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
 996                  weak_display_manager_factory_->GetWeakPtr()));
 997 }
 998
 999 void Shell::InitKeyboard() {
1000   if (keyboard::IsKeyboardEnabled()) {
1001     if (keyboard_controller_.get()) {
1002       RootWindowControllerList controllers = GetAllRootWindowControllers();
1003       for (RootWindowControllerList::iterator iter = controllers.begin();
1004            iter != controllers.end(); ++iter) {
1005         (*iter)->DeactivateKeyboard(keyboard_controller_.get());
1006       }
1007     }
1008     keyboard::KeyboardControllerProxy* proxy =
1009         delegate_->CreateKeyboardControllerProxy();
1010     keyboard_controller_.reset(
1011         new keyboard::KeyboardController(proxy));
1012   }
1013 }
1014
1015 void Shell::InitRootWindow(aura::Window* root_window) {
1016   DCHECK(activation_client_);
1017   DCHECK(visibility_controller_.get());
1018   DCHECK(drag_drop_controller_.get());
1019   DCHECK(window_cycle_controller_.get());
1020
1021   aura::client::SetFocusClient(root_window, focus_client_.get());
1022   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
1023   aura::client::SetActivationClient(root_window, activation_client_);
1024   views::corewm::FocusController* focus_controller =
1025       static_cast<views::corewm::FocusController*>(activation_client_);
1026   root_window->AddPreTargetHandler(focus_controller);
1027   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
1028   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
1029   aura::client::SetScreenPositionClient(root_window,
1030                                         screen_position_controller_.get());
1031   aura::client::SetCursorClient(root_window, &cursor_manager_);
1032   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
1033   aura::client::SetEventClient(root_window, event_client_.get());
1034
1035   aura::client::SetWindowMoveClient(root_window,
1036       toplevel_window_event_handler_.get());
1037   root_window->AddPreTargetHandler(toplevel_window_event_handler_.get());
1038   root_window->AddPostTargetHandler(toplevel_window_event_handler_.get());
1039
1040   if (nested_dispatcher_controller_) {
1041     aura::client::SetDispatcherClient(root_window,
1042                                       nested_dispatcher_controller_.get());
1043   }
1044   if (user_action_client_)
1045     aura::client::SetUserActionClient(root_window, user_action_client_.get());
1046 }
1047
1048 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
1049   RootWindowControllerList controllers = GetAllRootWindowControllers();
1050   for (RootWindowControllerList::iterator iter = controllers.begin();
1051        iter != controllers.end(); ++iter) {
1052     internal::SystemModalContainerLayoutManager* layout_manager =
1053         (*iter)->GetSystemModalLayoutManager(window);
1054     if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
1055       return true;
1056   }
1057   return false;
1058 }
1059
1060 ////////////////////////////////////////////////////////////////////////////////
1061 // Shell, ui::EventTarget overrides:
1062
1063 bool Shell::CanAcceptEvent(const ui::Event& event) {
1064   return true;
1065 }
1066
1067 ui::EventTarget* Shell::GetParentTarget() {
1068   return aura::Env::GetInstance();
1069 }
1070
1071 scoped_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
1072   return scoped_ptr<ui::EventTargetIterator>();
1073 }
1074
1075 ui::EventTargeter* Shell::GetEventTargeter() {
1076   NOTREACHED();
1077   return NULL;
1078 }
1079
1080 void Shell::OnEvent(ui::Event* event) {
1081 }
1082
1083 ////////////////////////////////////////////////////////////////////////////////
1084 // Shell, aura::client::ActivationChangeObserver implementation:
1085
1086 void Shell::OnWindowActivated(aura::Window* gained_active,
1087                               aura::Window* lost_active) {
1088   if (gained_active)
1089     target_root_window_ = gained_active->GetRootWindow();
1090 }
1091
1092 }  // namespace ash