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/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/mru_window_tracker.h"
  63 #include "ash/wm/overlay_event_filter.h"
  64 #include "ash/wm/overview/window_selector_controller.h"
  65 #include "ash/wm/power_button_controller.h"
  66 #include "ash/wm/resize_shadow_controller.h"
  67 #include "ash/wm/root_window_layout_manager.h"
  68 #include "ash/wm/screen_dimmer.h"
  69 #include "ash/wm/system_gesture_event_filter.h"
  70 #include "ash/wm/system_modal_container_event_filter.h"
  71 #include "ash/wm/system_modal_container_layout_manager.h"
  72 #include "ash/wm/toplevel_window_event_handler.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/trace_event.h"
  84 #include "ui/aura/client/aura_constants.h"
  85 #include "ui/aura/client/user_action_client.h"
  86 #include "ui/aura/env.h"
  87 #include "ui/aura/layout_manager.h"
  88 #include "ui/aura/root_window.h"
  89 #include "ui/aura/window.h"
  90 #include "ui/base/ui_base_switches.h"
  91 #include "ui/compositor/layer.h"
  92 #include "ui/compositor/layer_animator.h"
  93 #include "ui/events/event_target_iterator.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/accelerators/magnifier_key_scroller.h"
 119 #include "ash/accelerators/spoken_feedback_toggler.h"
 120 #include "ash/ash_constants.h"
 121 #include "ash/display/display_change_observer_chromeos.h"
 122 #include "ash/display/display_error_observer_chromeos.h"
 123 #include "ash/display/output_configurator_animation.h"
 124 #include "ash/display/projecting_observer_chromeos.h"
 125 #include "base/message_loop/message_pump_x11.h"
 126 #include "base/sys_info.h"
 127 #include "chromeos/display/output_configurator.h"
 128 #endif  // defined(USE_X11)
 129 #include "ash/display/resolution_notification_controller.h"
 130 #include "ash/sticky_keys/sticky_keys_controller.h"
 131 #include "ash/system/chromeos/brightness/brightness_controller_chromeos.h"
 132 #include "ash/system/chromeos/power/power_event_observer.h"
 133 #include "ash/system/chromeos/power/power_status.h"
 134 #include "ash/system/chromeos/power/user_activity_notifier.h"
 135 #include "ash/system/chromeos/power/video_activity_notifier.h"
 136 #endif  // defined(OS_CHROMEOS)
 137
 138 namespace ash {
 139
 140 namespace {
 141
 142 using aura::Window;
 143 using views::Widget;
 144
 145 // A Corewm VisibilityController subclass that calls the Ash animation routine
 146 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 147 class AshVisibilityController : public views::corewm::VisibilityController {
 148  public:
 149   AshVisibilityController() {}
 150   virtual ~AshVisibilityController() {}
 151
 152  private:
 153   // Overridden from views::corewm::VisibilityController:
 154   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 155       aura::Window* window,
 156       bool visible) OVERRIDE {
 157     return AnimateOnChildWindowVisibilityChanged(window, visible);
 158   }
 159
 160   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 161 };
 162
 163 }  // namespace
 164
 165 // static
 166 Shell* Shell::instance_ = NULL;
 167 // static
 168 bool Shell::initially_hide_cursor_ = false;
 169
 170 ////////////////////////////////////////////////////////////////////////////////
 171 // Shell, public:
 172
 173 // static
 174 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 175   CHECK(!instance_);
 176   instance_ = new Shell(delegate);
 177   instance_->Init();
 178   return instance_;
 179 }
 180
 181 // static
 182 Shell* Shell::GetInstance() {
 183   DCHECK(instance_);
 184   return instance_;
 185 }
 186
 187 // static
 188 bool Shell::HasInstance() {
 189   return !!instance_;
 190 }
 191
 192 // static
 193 void Shell::DeleteInstance() {
 194   delete instance_;
 195   instance_ = NULL;
 196 }
 197
 198 // static
 199 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 200   return internal::GetRootWindowController(GetPrimaryRootWindow());
 201 }
 202
 203 // static
 204 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 205   return Shell::GetInstance()->display_controller()->
 206       GetAllRootWindowControllers();
 207 }
 208
 209 // static
 210 aura::Window* Shell::GetPrimaryRootWindow() {
 211   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 212 }
 213
 214 // static
 215 aura::Window* Shell::GetTargetRootWindow() {
 216   Shell* shell = GetInstance();
 217   if (shell->scoped_target_root_window_)
 218     return shell->scoped_target_root_window_;
 219   return shell->target_root_window_;
 220 }
 221
 222 // static
 223 gfx::Screen* Shell::GetScreen() {
 224   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 225 }
 226
 227 // static
 228 aura::Window::Windows Shell::GetAllRootWindows() {
 229   return Shell::GetInstance()->display_controller()->
 230       GetAllRootWindows();
 231 }
 232
 233 // static
 234 aura::Window* Shell::GetContainer(aura::Window* root_window,
 235                                   int container_id) {
 236   return root_window->GetChildById(container_id);
 237 }
 238
 239 // static
 240 const aura::Window* Shell::GetContainer(const aura::Window* root_window,
 241                                         int container_id) {
 242   return root_window->GetChildById(container_id);
 243 }
 244
 245 // static
 246 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 247     int container_id,
 248     aura::Window* priority_root) {
 249   std::vector<aura::Window*> containers;
 250   aura::Window::Windows root_windows = GetAllRootWindows();
 251   for (aura::Window::Windows::const_iterator it = root_windows.begin();
 252        it != root_windows.end(); ++it) {
 253     aura::Window* container = (*it)->GetChildById(container_id);
 254     if (container) {
 255       if (priority_root && priority_root->Contains(container))
 256         containers.insert(containers.begin(), container);
 257       else
 258         containers.push_back(container);
 259     }
 260   }
 261   return containers;
 262 }
 263
 264 void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
 265                             ui::MenuSourceType source_type) {
 266   // No context menus if there is no session with an active user.
 267   if (!session_state_delegate_->NumberOfLoggedInUsers())
 268     return;
 269   // No context menus when screen is locked.
 270   if (session_state_delegate_->IsScreenLocked())
 271     return;
 272
 273   aura::Window* root =
 274       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 275   internal::GetRootWindowController(root)->
 276       ShowContextMenu(location_in_screen, source_type);
 277 }
 278
 279 void Shell::ToggleAppList(aura::Window* window) {
 280   // If the context window is not given, show it on the target root window.
 281   if (!window)
 282     window = GetTargetRootWindow();
 283   if (!app_list_controller_)
 284     app_list_controller_.reset(new internal::AppListController);
 285   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 286 }
 287
 288 bool Shell::GetAppListTargetVisibility() const {
 289   return app_list_controller_.get() &&
 290       app_list_controller_->GetTargetVisibility();
 291 }
 292
 293 aura::Window* Shell::GetAppListWindow() {
 294   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 295 }
 296
 297 app_list::AppListView* Shell::GetAppListView() {
 298   return app_list_controller_.get() ? app_list_controller_->GetView() : NULL;
 299 }
 300
 301 bool Shell::IsSystemModalWindowOpen() const {
 302   if (simulate_modal_window_open_for_testing_)
 303     return true;
 304   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 305       internal::kShellWindowId_SystemModalContainer, NULL);
 306   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 307        cit != containers.end(); ++cit) {
 308     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 309          wit != (*cit)->children().end(); ++wit) {
 310       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 311           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 312         return true;
 313       }
 314     }
 315   }
 316   return false;
 317 }
 318
 319 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 320     views::Widget* widget) {
 321   // Use translucent-style window frames for dialogs.
 322   return new CustomFrameViewAsh(widget);
 323 }
 324
 325 void Shell::RotateFocus(Direction direction) {
 326   focus_cycler_->RotateFocus(
 327       direction == FORWARD ? internal::FocusCycler::FORWARD :
 328                              internal::FocusCycler::BACKWARD);
 329 }
 330
 331 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 332                                      const gfx::Insets& insets) {
 333   if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
 334           contains, insets)) {
 335     return;
 336   }
 337   FOR_EACH_OBSERVER(ShellObserver, observers_,
 338                     OnDisplayWorkAreaInsetsChanged());
 339 }
 340
 341 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 342   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 343 }
 344
 345 void Shell::OnLoginUserProfilePrepared() {
 346   CreateShelf();
 347   CreateKeyboard();
 348 }
 349
 350 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 351   RootWindowControllerList controllers = GetAllRootWindowControllers();
 352   for (RootWindowControllerList::iterator iter = controllers.begin();
 353        iter != controllers.end(); ++iter)
 354     (*iter)->UpdateAfterLoginStatusChange(status);
 355 }
 356
 357 void Shell::OnAppTerminating() {
 358   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 359 }
 360
 361 void Shell::OnLockStateChanged(bool locked) {
 362   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 363 #ifndef NDEBUG
 364   // Make sure that there is no system modal in Lock layer when unlocked.
 365   if (!locked) {
 366     std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 367         internal::kShellWindowId_LockSystemModalContainer,
 368         GetPrimaryRootWindow());
 369     for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
 370          iter != containers.end(); ++iter) {
 371       DCHECK_EQ(0u, (*iter)->children().size());
 372     }
 373   }
 374 #endif
 375 }
 376
 377 void Shell::OnCastingSessionStartedOrStopped(bool started) {
 378 #if defined(OS_CHROMEOS) && defined(USE_X11)
 379   if (projecting_observer_)
 380     projecting_observer_->OnCastingSessionStartedOrStopped(started);
 381 #endif
 382 }
 383
 384 void Shell::CreateShelf() {
 385   RootWindowControllerList controllers = GetAllRootWindowControllers();
 386   for (RootWindowControllerList::iterator iter = controllers.begin();
 387        iter != controllers.end(); ++iter)
 388     (*iter)->shelf()->CreateShelf();
 389 }
 390
 391 void Shell::CreateKeyboard() {
 392   // TODO(bshe): Primary root window controller may not be the controller to
 393   // attach virtual keyboard. See http://crbug.com/303429
 394   InitKeyboard();
 395   if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 396     display_controller()->virtual_keyboard_window_controller()->
 397         ActivateKeyboard(keyboard_controller_.get());
 398   } else {
 399     GetPrimaryRootWindowController()->
 400         ActivateKeyboard(keyboard_controller_.get());
 401   }
 402 }
 403
 404 void Shell::DeactivateKeyboard() {
 405   if (keyboard_controller_.get()) {
 406     RootWindowControllerList controllers = GetAllRootWindowControllers();
 407     for (RootWindowControllerList::iterator iter = controllers.begin();
 408         iter != controllers.end(); ++iter) {
 409       (*iter)->DeactivateKeyboard(keyboard_controller_.get());
 410     }
 411   }
 412   keyboard_controller_.reset();
 413 }
 414
 415 void Shell::ShowShelf() {
 416   RootWindowControllerList controllers = GetAllRootWindowControllers();
 417   for (RootWindowControllerList::iterator iter = controllers.begin();
 418        iter != controllers.end(); ++iter)
 419     (*iter)->ShowShelf();
 420 }
 421
 422 void Shell::AddShellObserver(ShellObserver* observer) {
 423   observers_.AddObserver(observer);
 424 }
 425
 426 void Shell::RemoveShellObserver(ShellObserver* observer) {
 427   observers_.RemoveObserver(observer);
 428 }
 429
 430 void Shell::UpdateShelfVisibility() {
 431   RootWindowControllerList controllers = GetAllRootWindowControllers();
 432   for (RootWindowControllerList::iterator iter = controllers.begin();
 433        iter != controllers.end(); ++iter)
 434     if ((*iter)->shelf())
 435       (*iter)->UpdateShelfVisibility();
 436 }
 437
 438 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 439                                      aura::Window* root_window) {
 440   ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 441       SetAutoHideBehavior(behavior);
 442 }
 443
 444 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 445     aura::Window* root_window) const {
 446   return ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 447       auto_hide_behavior();
 448 }
 449
 450 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 451                               aura::Window* root_window) {
 452   if (ash::internal::ShelfLayoutManager::ForShelf(root_window)->
 453       SetAlignment(alignment)) {
 454     FOR_EACH_OBSERVER(
 455         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 456   }
 457 }
 458
 459 ShelfAlignment Shell::GetShelfAlignment(aura::Window* root_window) {
 460   return internal::GetRootWindowController(root_window)->
 461       GetShelfLayoutManager()->GetAlignment();
 462 }
 463
 464 void Shell::SetDimming(bool should_dim) {
 465   RootWindowControllerList controllers = GetAllRootWindowControllers();
 466   for (RootWindowControllerList::iterator iter = controllers.begin();
 467        iter != controllers.end(); ++iter)
 468     (*iter)->screen_dimmer()->SetDimming(should_dim);
 469 }
 470
 471 void Shell::NotifyFullscreenStateChange(bool is_fullscreen,
 472                                         aura::Window* root_window) {
 473   FOR_EACH_OBSERVER(ShellObserver, observers_, OnFullscreenStateChanged(
 474       is_fullscreen, root_window));
 475 }
 476
 477 void Shell::CreateModalBackground(aura::Window* window) {
 478   if (!modality_filter_) {
 479     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 480     AddPreTargetHandler(modality_filter_.get());
 481   }
 482   RootWindowControllerList controllers = GetAllRootWindowControllers();
 483   for (RootWindowControllerList::iterator iter = controllers.begin();
 484        iter != controllers.end(); ++iter)
 485     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 486 }
 487
 488 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 489   RootWindowControllerList controllers = GetAllRootWindowControllers();
 490   bool activated = false;
 491   for (RootWindowControllerList::iterator iter = controllers.begin();
 492        iter != controllers.end() && !activated; ++iter) {
 493     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 494         ActivateNextModalWindow();
 495   }
 496   if (!activated) {
 497     RemovePreTargetHandler(modality_filter_.get());
 498     modality_filter_.reset();
 499     for (RootWindowControllerList::iterator iter = controllers.begin();
 500          iter != controllers.end(); ++iter)
 501       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 502   }
 503 }
 504
 505 WebNotificationTray* Shell::GetWebNotificationTray() {
 506   return GetPrimaryRootWindowController()->shelf()->
 507       status_area_widget()->web_notification_tray();
 508 }
 509
 510 bool Shell::HasPrimaryStatusArea() {
 511   ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
 512   return shelf && shelf->status_area_widget();
 513 }
 514
 515 SystemTray* Shell::GetPrimarySystemTray() {
 516   return GetPrimaryRootWindowController()->GetSystemTray();
 517 }
 518
 519 ShelfDelegate* Shell::GetShelfDelegate() {
 520   if (!shelf_delegate_) {
 521     shelf_model_.reset(new ShelfModel);
 522     // Creates ShelfItemDelegateManager before ShelfDelegate.
 523     shelf_item_delegate_manager_.reset(
 524         new ShelfItemDelegateManager(shelf_model_.get()));
 525
 526     shelf_delegate_.reset(delegate_->CreateShelfDelegate(shelf_model_.get()));
 527     scoped_ptr<ShelfItemDelegate> controller(
 528         new internal::AppListShelfItemDelegate);
 529
 530     // Finding the shelf model's location of the app list and setting its
 531     // ShelfItemDelegate.
 532     int app_list_index = shelf_model_->GetItemIndexForType(TYPE_APP_LIST);
 533     DCHECK_GE(app_list_index, 0);
 534     ShelfID app_list_id = shelf_model_->items()[app_list_index].id;
 535     DCHECK(app_list_id);
 536     shelf_item_delegate_manager_->SetShelfItemDelegate(app_list_id,
 537                                                        controller.Pass());
 538     shelf_window_watcher_.reset(new internal::ShelfWindowWatcher(
 539                                         shelf_model_.get(),
 540                                         shelf_item_delegate_manager_.get()));
 541   }
 542   return shelf_delegate_.get();
 543 }
 544
 545 void Shell::SetTouchHudProjectionEnabled(bool enabled) {
 546   if (is_touch_hud_projection_enabled_ == enabled)
 547     return;
 548
 549   is_touch_hud_projection_enabled_ = enabled;
 550   FOR_EACH_OBSERVER(ShellObserver, observers_,
 551                     OnTouchHudProjectionToggled(enabled));
 552 }
 553
 554 #if defined(OS_CHROMEOS)
 555 ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
 556   return new ash::FirstRunHelperImpl;
 557 }
 558
 559 void Shell::SetCursorCompositingEnabled(bool enabled) {
 560   display_controller_->cursor_window_controller()->SetCursorCompositingEnabled(
 561       enabled);
 562   native_cursor_manager_->SetNativeCursorEnabled(!enabled);
 563 }
 564 #endif  // defined(OS_CHROMEOS)
 565
 566 void Shell::DoInitialWorkspaceAnimation() {
 567   return GetPrimaryRootWindowController()->workspace_controller()->
 568       DoInitialAnimation();
 569 }
 570
 571 ////////////////////////////////////////////////////////////////////////////////
 572 // Shell, private:
 573
 574 Shell::Shell(ShellDelegate* delegate)
 575     : target_root_window_(NULL),
 576       scoped_target_root_window_(NULL),
 577       delegate_(delegate),
 578       window_positioner_(new WindowPositioner),
 579       activation_client_(NULL),
 580 #if defined(OS_CHROMEOS) && defined(USE_X11)
 581       output_configurator_(new chromeos::OutputConfigurator()),
 582 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 583       native_cursor_manager_(new AshNativeCursorManager),
 584       cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
 585           native_cursor_manager_)),
 586       simulate_modal_window_open_for_testing_(false),
 587       is_touch_hud_projection_enabled_(false) {
 588   DCHECK(delegate_.get());
 589   gpu_support_.reset(delegate_->CreateGPUSupport());
 590   display_manager_.reset(new internal::DisplayManager);
 591   display_controller_.reset(new DisplayController);
 592 #if defined(OS_CHROMEOS) && defined(USE_X11)
 593   // TODO: Move this initialization into Shell::Init().
 594   output_configurator_->Init(!gpu_support_->IsPanelFittingDisabled());
 595   user_metrics_recorder_.reset(new UserMetricsRecorder);
 596
 597   base::MessagePumpX11::Current()->AddDispatcherForRootWindow(
 598       output_configurator());
 599   // We can't do this with a root window listener because XI_HierarchyChanged
 600   // messages don't have a target window.
 601   base::MessagePumpX11::Current()->AddObserver(output_configurator());
 602 #endif  // defined(OS_CHROMEOS)
 603
 604 #if defined(OS_CHROMEOS)
 605   internal::PowerStatus::Initialize();
 606 #endif
 607 }
 608
 609 Shell::~Shell() {
 610   TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
 611
 612   views::FocusManagerFactory::Install(NULL);
 613
 614   // Remove the focus from any window. This will prevent overhead and side
 615   // effects (e.g. crashes) from changing focus during shutdown.
 616   // See bug crbug.com/134502.
 617   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
 618
 619   // Please keep in same order as in Init() because it's easy to miss one.
 620   if (window_modality_controller_)
 621     window_modality_controller_.reset();
 622 #if defined(OS_CHROMEOS) && defined(USE_X11)
 623   RemovePreTargetHandler(magnifier_key_scroll_handler_.get());
 624   magnifier_key_scroll_handler_.reset();
 625
 626   RemovePreTargetHandler(speech_feedback_handler_.get());
 627   speech_feedback_handler_.reset();
 628 #endif
 629   RemovePreTargetHandler(user_activity_detector_.get());
 630   RemovePreTargetHandler(overlay_filter_.get());
 631   RemovePreTargetHandler(input_method_filter_.get());
 632   RemovePreTargetHandler(accelerator_filter_.get());
 633   RemovePreTargetHandler(event_transformation_handler_.get());
 634   RemovePreTargetHandler(toplevel_window_event_handler_.get());
 635   RemovePostTargetHandler(toplevel_window_event_handler_.get());
 636   RemovePreTargetHandler(system_gesture_filter_.get());
 637   RemovePreTargetHandler(keyboard_metrics_filter_.get());
 638   if (mouse_cursor_filter_)
 639     RemovePreTargetHandler(mouse_cursor_filter_.get());
 640
 641   // TooltipController is deleted with the Shell so removing its references.
 642   RemovePreTargetHandler(tooltip_controller_.get());
 643
 644   // AppList needs to be released before shelf layout manager, which is
 645   // destroyed with shelf container in the loop below. However, app list
 646   // container is now on top of shelf container and released after it.
 647   // TODO(xiyuan): Move it back when app list container is no longer needed.
 648   app_list_controller_.reset();
 649
 650   // Destroy SystemTrayDelegate before destroying the status area(s).
 651   system_tray_delegate_->Shutdown();
 652   system_tray_delegate_.reset();
 653
 654   locale_notification_controller_.reset();
 655
 656   // Drag-and-drop must be canceled prior to close all windows.
 657   drag_drop_controller_.reset();
 658
 659   // Controllers who have WindowObserver added must be deleted
 660   // before |display_controller_| is deleted.
 661
 662 #if defined(OS_CHROMEOS)
 663   // VideoActivityNotifier must be deleted before |video_detector_| is
 664   // deleted because it's observing video activity through
 665   // VideoDetectorObserver interface.
 666   video_activity_notifier_.reset();
 667 #endif  // defined(OS_CHROMEOS)
 668   video_detector_.reset();
 669
 670   shadow_controller_.reset();
 671   resize_shadow_controller_.reset();
 672
 673   window_selector_controller_.reset();
 674   window_cycle_controller_.reset();
 675   mru_window_tracker_.reset();
 676
 677   // |shelf_window_watcher_| has a weak pointer to |shelf_Model_|
 678   // and has window observers.
 679   shelf_window_watcher_.reset();
 680
 681   // Destroy all child windows including widgets.
 682   display_controller_->CloseChildWindows();
 683   display_controller_->CloseNonDesktopDisplay();
 684
 685   // Chrome implementation of shelf delegate depends on FocusClient,
 686   // so must be deleted before |focus_client_|.
 687   shelf_delegate_.reset();
 688   focus_client_.reset();
 689
 690   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 691   // needs to remove observers from it.
 692   system_tray_notifier_.reset();
 693
 694   // These need a valid Shell instance to clean up properly, so explicitly
 695   // delete them before invalidating the instance.
 696   // Alphabetical. TODO(oshima): sort.
 697   magnification_controller_.reset();
 698   partial_magnification_controller_.reset();
 699   tooltip_controller_.reset();
 700   event_client_.reset();
 701   nested_dispatcher_controller_.reset();
 702   toplevel_window_event_handler_.reset();
 703   user_action_client_.reset();
 704   visibility_controller_.reset();
 705   // |shelf_item_delegate_manager_| observes |shelf_model_|. It must be
 706   // destroyed before |shelf_model_| is destroyed.
 707   shelf_item_delegate_manager_.reset();
 708   shelf_model_.reset();
 709
 710   power_button_controller_.reset();
 711   lock_state_controller_.reset();
 712
 713 #if defined(OS_CHROMEOS)
 714   resolution_notification_controller_.reset();
 715 #endif
 716   desktop_background_controller_.reset();
 717
 718   // This also deletes all RootWindows. Note that we invoke Shutdown() on
 719   // DisplayController before resetting |display_controller_|, since destruction
 720   // of its owned RootWindowControllers relies on the value.
 721   display_manager_->CreateScreenForShutdown();
 722   display_controller_->Shutdown();
 723   display_controller_.reset();
 724   screen_position_controller_.reset();
 725
 726   keyboard_controller_.reset();
 727   accessibility_delegate_.reset();
 728   new_window_delegate_.reset();
 729   media_delegate_.reset();
 730
 731 #if defined(OS_CHROMEOS) && defined(USE_X11)
 732   if (display_change_observer_)
 733     output_configurator_->RemoveObserver(display_change_observer_.get());
 734   if (output_configurator_animation_)
 735     output_configurator_->RemoveObserver(output_configurator_animation_.get());
 736   if (display_error_observer_)
 737     output_configurator_->RemoveObserver(display_error_observer_.get());
 738   if (projecting_observer_)
 739     output_configurator_->RemoveObserver(projecting_observer_.get());
 740   base::MessagePumpX11::Current()->RemoveDispatcherForRootWindow(
 741       output_configurator());
 742   base::MessagePumpX11::Current()->RemoveObserver(output_configurator());
 743   display_change_observer_.reset();
 744 #endif  // defined(OS_CHROMEOS)
 745
 746 #if defined(OS_CHROMEOS)
 747   internal::PowerStatus::Shutdown();
 748 #endif
 749
 750   DCHECK(instance_ == this);
 751   instance_ = NULL;
 752 }
 753
 754 void Shell::Init() {
 755   CommandLine* command_line = CommandLine::ForCurrentProcess();
 756
 757   delegate_->PreInit();
 758   if (keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 759     display_manager_->SetSecondDisplayMode(
 760         internal::DisplayManager::VIRTUAL_KEYBOARD);
 761   }
 762   bool display_initialized = display_manager_->InitFromCommandLine();
 763 #if defined(OS_CHROMEOS) && defined(USE_X11)
 764   output_configurator_animation_.reset(
 765       new internal::OutputConfiguratorAnimation());
 766   output_configurator_->AddObserver(output_configurator_animation_.get());
 767
 768   projecting_observer_.reset(new internal::ProjectingObserver());
 769   output_configurator_->AddObserver(projecting_observer_.get());
 770
 771   if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
 772     display_change_observer_.reset(new internal::DisplayChangeObserver);
 773     // Register |display_change_observer_| first so that the rest of
 774     // observer gets invoked after the root windows are configured.
 775     output_configurator_->AddObserver(display_change_observer_.get());
 776     display_error_observer_.reset(new internal::DisplayErrorObserver());
 777     output_configurator_->AddObserver(display_error_observer_.get());
 778     output_configurator_->set_state_controller(display_change_observer_.get());
 779     output_configurator_->set_mirroring_controller(display_manager_.get());
 780     output_configurator_->Start(
 781         delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
 782     display_initialized = true;
 783   }
 784 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 785   if (!display_initialized)
 786     display_manager_->InitDefaultDisplay();
 787
 788   // Install the custom factory first so that views::FocusManagers for Tray,
 789   // Shelf, and WallPaper could be created by the factory.
 790   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 791
 792   // Env creates the compositor. Historically it seems to have been implicitly
 793   // initialized first by the ActivationController, but now that FocusController
 794   // no longer does this we need to do it explicitly.
 795   aura::Env::CreateInstance();
 796
 797   // The WindowModalityController needs to be at the front of the input event
 798   // pretarget handler list to ensure that it processes input events when modal
 799   // windows are active.
 800   window_modality_controller_.reset(
 801       new views::corewm::WindowModalityController(this));
 802
 803   AddPreTargetHandler(this);
 804
 805   env_filter_.reset(new views::corewm::CompoundEventFilter);
 806   AddPreTargetHandler(env_filter_.get());
 807
 808   views::corewm::FocusController* focus_controller =
 809       new views::corewm::FocusController(new wm::AshFocusRules);
 810   focus_client_.reset(focus_controller);
 811   activation_client_ = focus_controller;
 812   activation_client_->AddObserver(this);
 813   focus_cycler_.reset(new internal::FocusCycler());
 814
 815   screen_position_controller_.reset(new internal::ScreenPositionController);
 816   window_tree_host_factory_.reset(delegate_->CreateWindowTreeHostFactory());
 817
 818   display_controller_->Start();
 819   display_controller_->InitPrimaryDisplay();
 820   aura::Window* root_window = display_controller_->GetPrimaryRootWindow();
 821   target_root_window_ = root_window;
 822
 823 #if defined(OS_CHROMEOS)
 824   resolution_notification_controller_.reset(
 825       new internal::ResolutionNotificationController);
 826 #endif
 827
 828   cursor_manager_.SetDisplay(GetScreen()->GetPrimaryDisplay());
 829
 830   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 831   accelerator_controller_.reset(new AcceleratorController);
 832
 833 #if defined(OS_CHROMEOS) && defined(USE_X11)
 834   magnifier_key_scroll_handler_ = MagnifierKeyScroller::CreateHandler().Pass();
 835   AddPreTargetHandler(magnifier_key_scroll_handler_.get());
 836   speech_feedback_handler_ = SpokenFeedbackToggler::CreateHandler().Pass();
 837   AddPreTargetHandler(speech_feedback_handler_.get());
 838 #endif
 839
 840   // The order in which event filters are added is significant.
 841
 842 #if defined(OS_CHROMEOS)
 843   // The StickyKeysController also rewrites events and must be added
 844   // before observers, but after the EventRewriterEventFilter.
 845   sticky_keys_controller_.reset(new StickyKeysController);
 846   AddPreTargetHandler(sticky_keys_controller_.get());
 847 #endif
 848
 849   // UserActivityDetector passes events to observers, so let them get
 850   // rewritten first.
 851   user_activity_detector_.reset(new UserActivityDetector);
 852   AddPreTargetHandler(user_activity_detector_.get());
 853
 854   overlay_filter_.reset(new internal::OverlayEventFilter);
 855   AddPreTargetHandler(overlay_filter_.get());
 856   AddShellObserver(overlay_filter_.get());
 857
 858   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 859       root_window->GetDispatcher()->host()->GetAcceleratedWidget()));
 860   AddPreTargetHandler(input_method_filter_.get());
 861
 862   accelerator_filter_.reset(new internal::AcceleratorFilter);
 863   AddPreTargetHandler(accelerator_filter_.get());
 864
 865   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 866   AddPreTargetHandler(event_transformation_handler_.get());
 867
 868   toplevel_window_event_handler_.reset(new ToplevelWindowEventHandler);
 869
 870   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 871   AddPreTargetHandler(system_gesture_filter_.get());
 872
 873   keyboard_metrics_filter_.reset(new internal::KeyboardUMAEventFilter);
 874   AddPreTargetHandler(keyboard_metrics_filter_.get());
 875
 876   // The keyboard system must be initialized before the RootWindowController is
 877   // created.
 878 #if defined(OS_CHROMEOS)
 879     keyboard::InitializeKeyboard();
 880 #endif
 881
 882   lock_state_controller_.reset(new LockStateController);
 883   power_button_controller_.reset(new PowerButtonController(
 884       lock_state_controller_.get()));
 885   AddShellObserver(lock_state_controller_.get());
 886
 887   drag_drop_controller_.reset(new internal::DragDropController);
 888   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 889   PrependPreTargetHandler(mouse_cursor_filter_.get());
 890
 891   // Create Controllers that may need root window.
 892   // TODO(oshima): Move as many controllers before creating
 893   // RootWindowController as possible.
 894   visibility_controller_.reset(new AshVisibilityController);
 895   user_action_client_.reset(delegate_->CreateUserActionClient());
 896
 897   magnification_controller_.reset(
 898       MagnificationController::CreateInstance());
 899   mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
 900
 901   partial_magnification_controller_.reset(
 902       new PartialMagnificationController());
 903
 904   autoclick_controller_.reset(AutoclickController::CreateInstance());
 905
 906   high_contrast_controller_.reset(new HighContrastController);
 907   video_detector_.reset(new VideoDetector);
 908   window_cycle_controller_.reset(new WindowCycleController());
 909   window_selector_controller_.reset(new WindowSelectorController());
 910
 911   tooltip_controller_.reset(
 912       new views::corewm::TooltipController(
 913           scoped_ptr<views::corewm::Tooltip>(
 914               new views::corewm::TooltipAura(gfx::SCREEN_TYPE_ALTERNATE))));
 915   AddPreTargetHandler(tooltip_controller_.get());
 916
 917   event_client_.reset(new internal::EventClientImpl);
 918
 919   // This controller needs to be set before SetupManagedWindowMode.
 920   desktop_background_controller_.reset(new DesktopBackgroundController());
 921   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 922
 923   // StatusAreaWidget uses Shell's CapsLockDelegate.
 924   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 925
 926   session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
 927   accessibility_delegate_.reset(delegate_->CreateAccessibilityDelegate());
 928   new_window_delegate_.reset(delegate_->CreateNewWindowDelegate());
 929   media_delegate_.reset(delegate_->CreateMediaDelegate());
 930
 931   if (!command_line->HasSwitch(views::corewm::switches::kNoDropShadows)) {
 932     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 933     shadow_controller_.reset(
 934         new views::corewm::ShadowController(activation_client_));
 935   }
 936
 937   // Create system_tray_notifier_ before the delegate.
 938   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 939
 940   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 941   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 942   DCHECK(system_tray_delegate_.get());
 943
 944   locale_notification_controller_.reset(
 945       new internal::LocaleNotificationController);
 946
 947   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 948   system_tray_delegate_->Initialize();
 949
 950   // TODO(oshima): Initialize all RootWindowControllers once, and
 951   // initialize controller/delegates above when initializing the
 952   // primary root window controller.
 953   internal::RootWindowController::CreateForPrimaryDisplay(
 954       root_window->GetDispatcher());
 955
 956   display_controller_->InitSecondaryDisplays();
 957
 958   // It needs to be created after RootWindowController has been created
 959   // (which calls OnWindowResized has been called, otherwise the
 960   // widget will not paint when restoring after a browser crash.  Also it needs
 961   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 962   // the correct size.
 963   user_wallpaper_delegate_->InitializeWallpaper();
 964
 965   if (initially_hide_cursor_)
 966     cursor_manager_.HideCursor();
 967   cursor_manager_.SetCursor(ui::kCursorPointer);
 968
 969 #if defined(OS_CHROMEOS)
 970   // Set accelerator controller delegates.
 971   accelerator_controller_->SetBrightnessControlDelegate(
 972       scoped_ptr<ash::BrightnessControlDelegate>(
 973           new ash::system::BrightnessControllerChromeos).Pass());
 974
 975   power_event_observer_.reset(new internal::PowerEventObserver());
 976   user_activity_notifier_.reset(
 977       new internal::UserActivityNotifier(user_activity_detector_.get()));
 978   video_activity_notifier_.reset(
 979       new internal::VideoActivityNotifier(video_detector_.get()));
 980 #endif
 981
 982   weak_display_manager_factory_.reset(
 983       new base::WeakPtrFactory<internal::DisplayManager>(
 984           display_manager_.get()));
 985   // The compositor thread and main message loop have to be running in
 986   // order to create mirror window. Run it after the main message loop
 987   // is started.
 988   base::MessageLoopForUI::current()->PostTask(
 989       FROM_HERE,
 990       base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
 991                  weak_display_manager_factory_->GetWeakPtr()));
 992 }
 993
 994 void Shell::InitKeyboard() {
 995   if (keyboard::IsKeyboardEnabled()) {
 996     if (keyboard_controller_.get()) {
 997       RootWindowControllerList controllers = GetAllRootWindowControllers();
 998       for (RootWindowControllerList::iterator iter = controllers.begin();
 999            iter != controllers.end(); ++iter) {
1000         (*iter)->DeactivateKeyboard(keyboard_controller_.get());
1001       }
1002     }
1003     keyboard::KeyboardControllerProxy* proxy =
1004         delegate_->CreateKeyboardControllerProxy();
1005     keyboard_controller_.reset(
1006         new keyboard::KeyboardController(proxy));
1007   }
1008 }
1009
1010 void Shell::InitRootWindow(aura::Window* root_window) {
1011   DCHECK(activation_client_);
1012   DCHECK(visibility_controller_.get());
1013   DCHECK(drag_drop_controller_.get());
1014   DCHECK(window_cycle_controller_.get());
1015
1016   aura::client::SetFocusClient(root_window, focus_client_.get());
1017   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
1018   aura::client::SetActivationClient(root_window, activation_client_);
1019   views::corewm::FocusController* focus_controller =
1020       static_cast<views::corewm::FocusController*>(activation_client_);
1021   root_window->AddPreTargetHandler(focus_controller);
1022   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
1023   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
1024   aura::client::SetScreenPositionClient(root_window,
1025                                         screen_position_controller_.get());
1026   aura::client::SetCursorClient(root_window, &cursor_manager_);
1027   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
1028   aura::client::SetEventClient(root_window, event_client_.get());
1029
1030   aura::client::SetWindowMoveClient(root_window,
1031       toplevel_window_event_handler_.get());
1032   root_window->AddPreTargetHandler(toplevel_window_event_handler_.get());
1033   root_window->AddPostTargetHandler(toplevel_window_event_handler_.get());
1034
1035   if (nested_dispatcher_controller_) {
1036     aura::client::SetDispatcherClient(root_window,
1037                                       nested_dispatcher_controller_.get());
1038   }
1039   if (user_action_client_)
1040     aura::client::SetUserActionClient(root_window, user_action_client_.get());
1041 }
1042
1043 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
1044   RootWindowControllerList controllers = GetAllRootWindowControllers();
1045   for (RootWindowControllerList::iterator iter = controllers.begin();
1046        iter != controllers.end(); ++iter) {
1047     internal::SystemModalContainerLayoutManager* layout_manager =
1048         (*iter)->GetSystemModalLayoutManager(window);
1049     if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
1050       return true;
1051   }
1052   return false;
1053 }
1054
1055 ////////////////////////////////////////////////////////////////////////////////
1056 // Shell, ui::EventTarget overrides:
1057
1058 bool Shell::CanAcceptEvent(const ui::Event& event) {
1059   return true;
1060 }
1061
1062 ui::EventTarget* Shell::GetParentTarget() {
1063   return aura::Env::GetInstance();
1064 }
1065
1066 scoped_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
1067   return scoped_ptr<ui::EventTargetIterator>();
1068 }
1069
1070 ui::EventTargeter* Shell::GetEventTargeter() {
1071   NOTREACHED();
1072   return NULL;
1073 }
1074
1075 void Shell::OnEvent(ui::Event* event) {
1076 }
1077
1078 ////////////////////////////////////////////////////////////////////////////////
1079 // Shell, aura::client::ActivationChangeObserver implementation:
1080
1081 void Shell::OnWindowActivated(aura::Window* gained_active,
1082                               aura::Window* lost_active) {
1083   if (gained_active)
1084     target_root_window_ = gained_active->GetRootWindow();
1085 }
1086
1087 }  // namespace ash