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/caps_lock_delegate.h"
  16 #include "ash/desktop_background/desktop_background_controller.h"
  17 #include "ash/desktop_background/desktop_background_view.h"
  18 #include "ash/desktop_background/user_wallpaper_delegate.h"
  19 #include "ash/display/display_controller.h"
  20 #include "ash/display/display_manager.h"
  21 #include "ash/display/event_transformation_handler.h"
  22 #include "ash/display/mouse_cursor_event_filter.h"
  23 #include "ash/display/resolution_notification_controller.h"
  24 #include "ash/display/screen_position_controller.h"
  25 #include "ash/drag_drop/drag_drop_controller.h"
  26 #include "ash/focus_cycler.h"
  27 #include "ash/high_contrast/high_contrast_controller.h"
  28 #include "ash/host/root_window_host_factory.h"
  29 #include "ash/launcher/launcher_delegate.h"
  30 #include "ash/launcher/launcher_item_delegate.h"
  31 #include "ash/launcher/launcher_item_delegate_manager.h"
  32 #include "ash/launcher/launcher_model.h"
  33 #include "ash/magnifier/magnification_controller.h"
  34 #include "ash/magnifier/partial_magnification_controller.h"
  35 #include "ash/root_window_controller.h"
  36 #include "ash/screen_ash.h"
  37 #include "ash/session_state_delegate.h"
  38 #include "ash/shelf/app_list_shelf_item_delegate.h"
  39 #include "ash/shelf/shelf_layout_manager.h"
  40 #include "ash/shelf/shelf_widget.h"
  41 #include "ash/shell_delegate.h"
  42 #include "ash/shell_factory.h"
  43 #include "ash/shell_window_ids.h"
  44 #include "ash/system/locale/locale_notification_controller.h"
  45 #include "ash/system/status_area_widget.h"
  46 #include "ash/system/tray/system_tray_delegate.h"
  47 #include "ash/system/tray/system_tray_notifier.h"
  48 #include "ash/wm/app_list_controller.h"
  49 #include "ash/wm/ash_focus_rules.h"
  50 #include "ash/wm/ash_native_cursor_manager.h"
  51 #include "ash/wm/base_layout_manager.h"
  52 #include "ash/wm/coordinate_conversion.h"
  53 #include "ash/wm/custom_frame_view_ash.h"
  54 #include "ash/wm/event_client_impl.h"
  55 #include "ash/wm/event_rewriter_event_filter.h"
  56 #include "ash/wm/lock_state_controller.h"
  57 #include "ash/wm/lock_state_controller_impl2.h"
  58 #include "ash/wm/mru_window_tracker.h"
  59 #include "ash/wm/overlay_event_filter.h"
  60 #include "ash/wm/overview/window_selector_controller.h"
  61 #include "ash/wm/power_button_controller.h"
  62 #include "ash/wm/resize_shadow_controller.h"
  63 #include "ash/wm/root_window_layout_manager.h"
  64 #include "ash/wm/screen_dimmer.h"
  65 #include "ash/wm/session_state_controller_impl.h"
  66 #include "ash/wm/system_gesture_event_filter.h"
  67 #include "ash/wm/system_modal_container_event_filter.h"
  68 #include "ash/wm/system_modal_container_layout_manager.h"
  69 #include "ash/wm/user_activity_detector.h"
  70 #include "ash/wm/video_detector.h"
  71 #include "ash/wm/window_animations.h"
  72 #include "ash/wm/window_cycle_controller.h"
  73 #include "ash/wm/window_properties.h"
  74 #include "ash/wm/window_util.h"
  75 #include "ash/wm/workspace_controller.h"
  76 #include "base/bind.h"
  77 #include "base/command_line.h"
  78 #include "base/debug/leak_annotations.h"
  79 #include "base/debug/trace_event.h"
  80 #include "ui/aura/client/aura_constants.h"
  81 #include "ui/aura/client/user_action_client.h"
  82 #include "ui/aura/env.h"
  83 #include "ui/aura/focus_manager.h"
  84 #include "ui/aura/layout_manager.h"
  85 #include "ui/aura/root_window.h"
  86 #include "ui/aura/window.h"
  87 #include "ui/base/ui_base_switches.h"
  88 #include "ui/compositor/layer.h"
  89 #include "ui/compositor/layer_animator.h"
  90 #include "ui/gfx/display.h"
  91 #include "ui/gfx/image/image_skia.h"
  92 #include "ui/gfx/screen.h"
  93 #include "ui/gfx/size.h"
  94 #include "ui/keyboard/keyboard.h"
  95 #include "ui/keyboard/keyboard_util.h"
  96 #include "ui/message_center/message_center.h"
  97 #include "ui/views/corewm/compound_event_filter.h"
  98 #include "ui/views/corewm/corewm_switches.h"
  99 #include "ui/views/corewm/focus_controller.h"
 100 #include "ui/views/corewm/input_method_event_filter.h"
 101 #include "ui/views/corewm/shadow_controller.h"
 102 #include "ui/views/corewm/tooltip_controller.h"
 103 #include "ui/views/corewm/visibility_controller.h"
 104 #include "ui/views/corewm/window_modality_controller.h"
 105 #include "ui/views/focus/focus_manager_factory.h"
 106 #include "ui/views/widget/native_widget_aura.h"
 107 #include "ui/views/widget/widget.h"
 108
 109 #if defined(OS_CHROMEOS)
 110 #if defined(USE_X11)
 111 #include "ash/ash_constants.h"
 112 #include "ash/display/display_change_observer_chromeos.h"
 113 #include "ash/display/display_error_observer_chromeos.h"
 114 #include "ash/display/output_configurator_animation.h"
 115 #include "base/chromeos/chromeos_version.h"
 116 #include "base/message_loop/message_pump_x11.h"
 117 #include "chromeos/display/output_configurator.h"
 118 #include "content/public/browser/gpu_data_manager.h"
 119 #include "gpu/config/gpu_feature_type.h"
 120 #endif  // defined(USE_X11)
 121 #include "ash/system/chromeos/power/power_status.h"
 122 #endif  // defined(OS_CHROMEOS)
 123
 124 namespace ash {
 125
 126 namespace {
 127
 128 using aura::Window;
 129 using views::Widget;
 130
 131 // This dummy class is used for shell unit tests. We dont have chrome delegate
 132 // in these tests.
 133 class DummyUserWallpaperDelegate : public UserWallpaperDelegate {
 134  public:
 135   DummyUserWallpaperDelegate() {}
 136
 137   virtual ~DummyUserWallpaperDelegate() {}
 138
 139   virtual int GetAnimationType() OVERRIDE {
 140     return views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE;
 141   }
 142
 143   virtual bool ShouldShowInitialAnimation() OVERRIDE {
 144     return false;
 145   }
 146
 147   virtual void UpdateWallpaper() OVERRIDE {
 148   }
 149
 150   virtual void InitializeWallpaper() OVERRIDE {
 151     ash::Shell::GetInstance()->desktop_background_controller()->
 152         CreateEmptyWallpaper();
 153   }
 154
 155   virtual void OpenSetWallpaperPage() OVERRIDE {
 156   }
 157
 158   virtual bool CanOpenSetWallpaperPage() OVERRIDE {
 159     return false;
 160   }
 161
 162   virtual void OnWallpaperAnimationFinished() OVERRIDE {
 163   }
 164
 165   virtual void OnWallpaperBootAnimationFinished() OVERRIDE {
 166   }
 167
 168  private:
 169   DISALLOW_COPY_AND_ASSIGN(DummyUserWallpaperDelegate);
 170 };
 171
 172 // A Corewm VisibilityController subclass that calls the Ash animation routine
 173 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 174 class AshVisibilityController : public views::corewm::VisibilityController {
 175  public:
 176   AshVisibilityController() {}
 177   virtual ~AshVisibilityController() {}
 178
 179  private:
 180   // Overridden from views::corewm::VisibilityController:
 181   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 182       aura::Window* window,
 183       bool visible) OVERRIDE {
 184     return AnimateOnChildWindowVisibilityChanged(window, visible);
 185   }
 186
 187   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 188 };
 189
 190 }  // namespace
 191
 192 // static
 193 Shell* Shell::instance_ = NULL;
 194 // static
 195 bool Shell::initially_hide_cursor_ = false;
 196
 197 ////////////////////////////////////////////////////////////////////////////////
 198 // Shell, public:
 199
 200 Shell::Shell(ShellDelegate* delegate)
 201     : screen_(new ScreenAsh),
 202       target_root_window_(NULL),
 203       scoped_target_root_window_(NULL),
 204       delegate_(delegate),
 205       activation_client_(NULL),
 206 #if defined(OS_CHROMEOS) && defined(USE_X11)
 207       output_configurator_(new chromeos::OutputConfigurator()),
 208 #endif  // defined(OS_CHROMEOS)
 209       native_cursor_manager_(new AshNativeCursorManager),
 210       cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
 211           native_cursor_manager_)),
 212       browser_context_(NULL),
 213       simulate_modal_window_open_for_testing_(false),
 214       is_touch_hud_projection_enabled_(false) {
 215   DCHECK(delegate_.get());
 216   display_manager_.reset(new internal::DisplayManager);
 217
 218   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
 219   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
 220   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
 221     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 222   display_controller_.reset(new DisplayController);
 223 #if defined(OS_CHROMEOS) && defined(USE_X11)
 224   bool is_panel_fitting_disabled =
 225       content::GpuDataManager::GetInstance()->IsFeatureBlacklisted(
 226           gpu::GPU_FEATURE_TYPE_PANEL_FITTING);
 227
 228   output_configurator_->Init(!is_panel_fitting_disabled);
 229
 230   base::MessagePumpX11::Current()->AddDispatcherForRootWindow(
 231       output_configurator());
 232   // We can't do this with a root window listener because XI_HierarchyChanged
 233   // messages don't have a target window.
 234   base::MessagePumpX11::Current()->AddObserver(output_configurator());
 235 #endif  // defined(OS_CHROMEOS)
 236   AddPreTargetHandler(this);
 237
 238 #if defined(OS_CHROMEOS)
 239   internal::PowerStatus::Initialize();
 240 #endif
 241 }
 242
 243 Shell::~Shell() {
 244   TRACE_EVENT0("shutdown", "ash::Shell::Destructor");
 245
 246   views::FocusManagerFactory::Install(NULL);
 247
 248   // Remove the focus from any window. This will prevent overhead and side
 249   // effects (e.g. crashes) from changing focus during shutdown.
 250   // See bug crbug.com/134502.
 251   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
 252
 253   // Please keep in same order as in Init() because it's easy to miss one.
 254   RemovePreTargetHandler(event_rewriter_filter_.get());
 255   RemovePreTargetHandler(user_activity_detector_.get());
 256   RemovePreTargetHandler(overlay_filter_.get());
 257   RemovePreTargetHandler(input_method_filter_.get());
 258   RemovePreTargetHandler(window_modality_controller_.get());
 259   if (mouse_cursor_filter_)
 260     RemovePreTargetHandler(mouse_cursor_filter_.get());
 261   RemovePreTargetHandler(system_gesture_filter_.get());
 262   RemovePreTargetHandler(event_transformation_handler_.get());
 263   RemovePreTargetHandler(accelerator_filter_.get());
 264
 265   // TooltipController is deleted with the Shell so removing its references.
 266   RemovePreTargetHandler(tooltip_controller_.get());
 267
 268   // AppList needs to be released before shelf layout manager, which is
 269   // destroyed with launcher container in the loop below. However, app list
 270   // container is now on top of launcher container and released after it.
 271   // TODO(xiyuan): Move it back when app list container is no longer needed.
 272   app_list_controller_.reset();
 273
 274   // Destroy SystemTrayDelegate before destroying the status area(s).
 275   system_tray_delegate_->Shutdown();
 276   system_tray_delegate_.reset();
 277
 278   locale_notification_controller_.reset();
 279
 280   // Drag-and-drop must be canceled prior to close all windows.
 281   drag_drop_controller_.reset();
 282
 283   // Destroy all child windows including widgets.
 284   display_controller_->CloseChildWindows();
 285
 286   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 287   // needs to remove observers from it.
 288   system_tray_notifier_.reset();
 289
 290   // These need a valid Shell instance to clean up properly, so explicitly
 291   // delete them before invalidating the instance.
 292   // Alphabetical. TODO(oshima): sort.
 293   magnification_controller_.reset();
 294   partial_magnification_controller_.reset();
 295   resize_shadow_controller_.reset();
 296   shadow_controller_.reset();
 297   tooltip_controller_.reset();
 298   event_client_.reset();
 299   window_cycle_controller_.reset();
 300   nested_dispatcher_controller_.reset();
 301   user_action_client_.reset();
 302   visibility_controller_.reset();
 303   launcher_delegate_.reset();
 304   launcher_model_.reset();
 305   video_detector_.reset();
 306
 307   power_button_controller_.reset();
 308   lock_state_controller_.reset();
 309   mru_window_tracker_.reset();
 310
 311   resolution_notification_controller_.reset();
 312
 313   // This also deletes all RootWindows. Note that we invoke Shutdown() on
 314   // DisplayController before resetting |display_controller_|, since destruction
 315   // of its owned RootWindowControllers relies on the value.
 316   display_controller_->Shutdown();
 317   display_controller_.reset();
 318   screen_position_controller_.reset();
 319
 320 #if defined(OS_CHROMEOS) && defined(USE_X11)
 321    if (display_change_observer_)
 322     output_configurator_->RemoveObserver(display_change_observer_.get());
 323   if (output_configurator_animation_)
 324     output_configurator_->RemoveObserver(output_configurator_animation_.get());
 325   if (display_error_observer_)
 326     output_configurator_->RemoveObserver(display_error_observer_.get());
 327   base::MessagePumpX11::Current()->RemoveDispatcherForRootWindow(
 328       output_configurator());
 329   base::MessagePumpX11::Current()->RemoveObserver(output_configurator());
 330   display_change_observer_.reset();
 331 #endif  // defined(OS_CHROMEOS)
 332
 333 #if defined(OS_CHROMEOS)
 334   internal::PowerStatus::Shutdown();
 335 #endif
 336
 337   DCHECK(instance_ == this);
 338   instance_ = NULL;
 339 }
 340
 341 // static
 342 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 343   CHECK(!instance_);
 344   instance_ = new Shell(delegate);
 345   instance_->Init();
 346   return instance_;
 347 }
 348
 349 // static
 350 Shell* Shell::GetInstance() {
 351   DCHECK(instance_);
 352   return instance_;
 353 }
 354
 355 // static
 356 bool Shell::HasInstance() {
 357   return !!instance_;
 358 }
 359
 360 // static
 361 void Shell::DeleteInstance() {
 362   delete instance_;
 363   instance_ = NULL;
 364 }
 365
 366 // static
 367 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 368   return internal::GetRootWindowController(GetPrimaryRootWindow());
 369 }
 370
 371 // static
 372 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 373   return Shell::GetInstance()->display_controller()->
 374       GetAllRootWindowControllers();
 375 }
 376
 377 // static
 378 aura::RootWindow* Shell::GetPrimaryRootWindow() {
 379   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 380 }
 381
 382 // static
 383 aura::RootWindow* Shell::GetTargetRootWindow() {
 384   Shell* shell = GetInstance();
 385   if (shell->scoped_target_root_window_)
 386     return shell->scoped_target_root_window_;
 387   return shell->target_root_window_;
 388 }
 389
 390 // static
 391 gfx::Screen* Shell::GetScreen() {
 392   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 393 }
 394
 395 // static
 396 Shell::RootWindowList Shell::GetAllRootWindows() {
 397   return Shell::GetInstance()->display_controller()->
 398       GetAllRootWindows();
 399 }
 400
 401 // static
 402 aura::Window* Shell::GetContainer(aura::RootWindow* root_window,
 403                                   int container_id) {
 404   return root_window->GetChildById(container_id);
 405 }
 406
 407 // static
 408 const aura::Window* Shell::GetContainer(const aura::RootWindow* root_window,
 409                                         int container_id) {
 410   return root_window->GetChildById(container_id);
 411 }
 412
 413 // static
 414 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 415     int container_id,
 416     aura::RootWindow* priority_root) {
 417   std::vector<aura::Window*> containers;
 418   RootWindowList root_windows = GetAllRootWindows();
 419   for (RootWindowList::const_iterator it = root_windows.begin();
 420        it != root_windows.end(); ++it) {
 421     aura::Window* container = (*it)->GetChildById(container_id);
 422     if (container) {
 423       if (priority_root && priority_root->Contains(container))
 424         containers.insert(containers.begin(), container);
 425       else
 426         containers.push_back(container);
 427     }
 428   }
 429   return containers;
 430 }
 431
 432 // static
 433 bool Shell::IsForcedMaximizeMode() {
 434   CommandLine* command_line = CommandLine::ForCurrentProcess();
 435   return command_line->HasSwitch(switches::kForcedMaximizeMode);
 436 }
 437
 438 void Shell::Init() {
 439   CommandLine* command_line = CommandLine::ForCurrentProcess();
 440
 441   delegate_->PreInit();
 442   bool display_initialized = false;
 443 #if defined(OS_CHROMEOS) && defined(USE_X11)
 444   output_configurator_animation_.reset(
 445       new internal::OutputConfiguratorAnimation());
 446   output_configurator_->AddObserver(output_configurator_animation_.get());
 447   if (base::chromeos::IsRunningOnChromeOS()) {
 448     display_change_observer_.reset(new internal::DisplayChangeObserver);
 449     // Register |display_change_observer_| first so that the rest of
 450     // observer gets invoked after the root windows are configured.
 451     output_configurator_->AddObserver(display_change_observer_.get());
 452     display_error_observer_.reset(new internal::DisplayErrorObserver());
 453     output_configurator_->AddObserver(display_error_observer_.get());
 454     output_configurator_->set_state_controller(display_change_observer_.get());
 455     if (!command_line->HasSwitch(ash::switches::kAshDisableSoftwareMirroring))
 456       output_configurator_->set_mirroring_controller(display_manager_.get());
 457     output_configurator_->Start(
 458         delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
 459     display_initialized = true;
 460   }
 461 #endif  // defined(OS_CHROMEOS) && defined(USE_X11)
 462   if (!display_initialized)
 463     display_manager_->InitFromCommandLine();
 464
 465   // Install the custom factory first so that views::FocusManagers for Tray,
 466   // Launcher, and WallPaper could be created by the factory.
 467   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 468
 469   env_filter_.reset(new views::corewm::CompoundEventFilter);
 470   AddPreTargetHandler(env_filter_.get());
 471
 472   // Env creates the compositor. Historically it seems to have been implicitly
 473   // initialized first by the ActivationController, but now that FocusController
 474   // no longer does this we need to do it explicitly.
 475   aura::Env::GetInstance();
 476   views::corewm::FocusController* focus_controller =
 477       new views::corewm::FocusController(new wm::AshFocusRules);
 478   focus_client_.reset(focus_controller);
 479   activation_client_ = focus_controller;
 480   activation_client_->AddObserver(this);
 481   focus_cycler_.reset(new internal::FocusCycler());
 482
 483   screen_position_controller_.reset(new internal::ScreenPositionController);
 484   root_window_host_factory_.reset(delegate_->CreateRootWindowHostFactory());
 485
 486   display_controller_->Start();
 487   display_controller_->InitPrimaryDisplay();
 488   aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
 489   target_root_window_ = root_window;
 490
 491   resolution_notification_controller_.reset(
 492       new internal::ResolutionNotificationController);
 493
 494   cursor_manager_.SetDisplay(DisplayController::GetPrimaryDisplay());
 495
 496   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 497   accelerator_controller_.reset(new AcceleratorController);
 498
 499   // The order in which event filters are added is significant.
 500   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
 501   AddPreTargetHandler(event_rewriter_filter_.get());
 502
 503   // UserActivityDetector passes events to observers, so let them get
 504   // rewritten first.
 505   user_activity_detector_.reset(new UserActivityDetector);
 506   AddPreTargetHandler(user_activity_detector_.get());
 507
 508   overlay_filter_.reset(new internal::OverlayEventFilter);
 509   AddPreTargetHandler(overlay_filter_.get());
 510   AddShellObserver(overlay_filter_.get());
 511
 512   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 513                                  root_window->GetAcceleratedWidget()));
 514   AddPreTargetHandler(input_method_filter_.get());
 515
 516   accelerator_filter_.reset(new internal::AcceleratorFilter);
 517   AddPreTargetHandler(accelerator_filter_.get());
 518
 519   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 520   AddPreTargetHandler(event_transformation_handler_.get());
 521
 522   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 523   AddPreTargetHandler(system_gesture_filter_.get());
 524
 525   // The keyboard system must be initialized before the RootWindowController is
 526   // created.
 527   if (keyboard::IsKeyboardEnabled())
 528     keyboard::InitializeKeyboard();
 529
 530   if (command_line->HasSwitch(ash::switches::kAshDisableNewLockAnimations))
 531     lock_state_controller_.reset(new SessionStateControllerImpl);
 532   else
 533     lock_state_controller_.reset(new LockStateControllerImpl2);
 534   power_button_controller_.reset(new PowerButtonController(
 535       lock_state_controller_.get()));
 536   AddShellObserver(lock_state_controller_.get());
 537
 538   drag_drop_controller_.reset(new internal::DragDropController);
 539   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 540   PrependPreTargetHandler(mouse_cursor_filter_.get());
 541
 542   // Create Controllers that may need root window.
 543   // TODO(oshima): Move as many controllers before creating
 544   // RootWindowController as possible.
 545   visibility_controller_.reset(new AshVisibilityController);
 546   user_action_client_.reset(delegate_->CreateUserActionClient());
 547   window_modality_controller_.reset(
 548       new views::corewm::WindowModalityController);
 549   AddPreTargetHandler(window_modality_controller_.get());
 550
 551   magnification_controller_.reset(
 552       MagnificationController::CreateInstance());
 553   mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
 554
 555   partial_magnification_controller_.reset(
 556       new PartialMagnificationController());
 557
 558   high_contrast_controller_.reset(new HighContrastController);
 559   video_detector_.reset(new VideoDetector);
 560   window_cycle_controller_.reset(new WindowCycleController());
 561   window_selector_controller_.reset(new WindowSelectorController());
 562
 563   tooltip_controller_.reset(new views::corewm::TooltipController(
 564                                 gfx::SCREEN_TYPE_ALTERNATE));
 565   AddPreTargetHandler(tooltip_controller_.get());
 566
 567   event_client_.reset(new internal::EventClientImpl);
 568
 569   // This controller needs to be set before SetupManagedWindowMode.
 570   desktop_background_controller_.reset(new DesktopBackgroundController());
 571   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 572   if (!user_wallpaper_delegate_)
 573     user_wallpaper_delegate_.reset(new DummyUserWallpaperDelegate());
 574
 575   // StatusAreaWidget uses Shell's CapsLockDelegate.
 576   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 577
 578   session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
 579
 580   if (!command_line->HasSwitch(views::corewm::switches::kNoDropShadows)) {
 581     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 582     shadow_controller_.reset(
 583         new views::corewm::ShadowController(activation_client_));
 584   }
 585
 586   // Create system_tray_notifier_ before the delegate.
 587   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 588
 589   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 590   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 591   DCHECK(system_tray_delegate_.get());
 592
 593   internal::RootWindowController* root_window_controller =
 594       new internal::RootWindowController(root_window);
 595   InitRootWindowController(root_window_controller,
 596                            delegate_->IsFirstRunAfterBoot());
 597
 598   locale_notification_controller_.reset(
 599       new internal::LocaleNotificationController);
 600
 601   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 602   system_tray_delegate_->Initialize();
 603
 604   display_controller_->InitSecondaryDisplays();
 605
 606   // Force Layout
 607   root_window_controller->root_window_layout()->OnWindowResized();
 608
 609   // It needs to be created after OnWindowResized has been called, otherwise the
 610   // widget will not paint when restoring after a browser crash.  Also it needs
 611   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 612   // the correct size.
 613   user_wallpaper_delegate_->InitializeWallpaper();
 614
 615   if (initially_hide_cursor_)
 616     cursor_manager_.HideCursor();
 617   cursor_manager_.SetCursor(ui::kCursorPointer);
 618
 619   if (!cursor_manager_.IsCursorVisible()) {
 620     // Cursor might have been hidden by something other than chrome.
 621     // Let the first mouse event show the cursor.
 622     env_filter_->set_cursor_hidden_by_filter(true);
 623   }
 624
 625   // The compositor thread and main message loop have to be running in
 626   // order to create mirror window. Run it after the main message loop
 627   // is started.
 628   base::MessageLoopForUI::current()->PostTask(
 629       FROM_HERE,
 630       base::Bind(&internal::DisplayManager::CreateMirrorWindowIfAny,
 631                  base::Unretained(display_manager_.get())));
 632 }
 633
 634 void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
 635                             ui::MenuSourceType source_type) {
 636   // No context menus if there is no session with an active user.
 637   if (!session_state_delegate_->NumberOfLoggedInUsers())
 638     return;
 639   // No context menus when screen is locked.
 640   if (session_state_delegate_->IsScreenLocked())
 641     return;
 642
 643   aura::RootWindow* root =
 644       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 645   // TODO(oshima): The root and root window controller shouldn't be
 646   // NULL even for the out-of-bounds |location_in_screen| (It should
 647   // return the primary root). Investigate why/how this is
 648   // happening. crbug.com/165214.
 649   internal::RootWindowController* rwc = internal::GetRootWindowController(root);
 650   CHECK(rwc) << "root=" << root
 651              << ", location:" << location_in_screen.ToString();
 652   if (rwc)
 653     rwc->ShowContextMenu(location_in_screen, source_type);
 654 }
 655
 656 void Shell::ToggleAppList(aura::Window* window) {
 657   // If the context window is not given, show it on the target root window.
 658   if (!window)
 659     window = GetTargetRootWindow();
 660   if (!app_list_controller_)
 661     app_list_controller_.reset(new internal::AppListController);
 662   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 663 }
 664
 665 bool Shell::GetAppListTargetVisibility() const {
 666   return app_list_controller_.get() &&
 667       app_list_controller_->GetTargetVisibility();
 668 }
 669
 670 aura::Window* Shell::GetAppListWindow() {
 671   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 672 }
 673
 674 bool Shell::IsSystemModalWindowOpen() const {
 675   if (simulate_modal_window_open_for_testing_)
 676     return true;
 677   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 678       internal::kShellWindowId_SystemModalContainer, NULL);
 679   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 680        cit != containers.end(); ++cit) {
 681     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 682          wit != (*cit)->children().end(); ++wit) {
 683       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 684           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 685         return true;
 686       }
 687     }
 688   }
 689   return false;
 690 }
 691
 692 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 693     views::Widget* widget) {
 694   // Use translucent-style window frames for dialogs.
 695   CustomFrameViewAsh* frame_view = new CustomFrameViewAsh;
 696   frame_view->Init(widget);
 697   return frame_view;
 698 }
 699
 700 void Shell::RotateFocus(Direction direction) {
 701   focus_cycler_->RotateFocus(
 702       direction == FORWARD ? internal::FocusCycler::FORWARD :
 703                              internal::FocusCycler::BACKWARD);
 704 }
 705
 706 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 707                                      const gfx::Insets& insets) {
 708   if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
 709           contains, insets)) {
 710     return;
 711   }
 712   FOR_EACH_OBSERVER(ShellObserver, observers_,
 713                     OnDisplayWorkAreaInsetsChanged());
 714 }
 715
 716 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 717   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 718 }
 719
 720 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 721   RootWindowControllerList controllers = GetAllRootWindowControllers();
 722   for (RootWindowControllerList::iterator iter = controllers.begin();
 723        iter != controllers.end(); ++iter)
 724     (*iter)->UpdateAfterLoginStatusChange(status);
 725 }
 726
 727 void Shell::OnAppTerminating() {
 728   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 729 }
 730
 731 void Shell::OnLockStateChanged(bool locked) {
 732   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 733 #ifndef NDEBUG
 734   // Make sure that there is no system modal in Lock layer when unlocked.
 735   if (!locked) {
 736     std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 737         internal::kShellWindowId_LockSystemModalContainer,
 738         GetPrimaryRootWindow());
 739     for (std::vector<aura::Window*>::const_iterator iter = containers.begin();
 740          iter != containers.end(); ++iter) {
 741       DCHECK_EQ(0u, (*iter)->children().size());
 742     }
 743   }
 744 #endif
 745 }
 746
 747 void Shell::CreateLauncher() {
 748   RootWindowControllerList controllers = GetAllRootWindowControllers();
 749   for (RootWindowControllerList::iterator iter = controllers.begin();
 750        iter != controllers.end(); ++iter)
 751     (*iter)->shelf()->CreateLauncher();
 752 }
 753
 754 void Shell::ShowLauncher() {
 755   RootWindowControllerList controllers = GetAllRootWindowControllers();
 756   for (RootWindowControllerList::iterator iter = controllers.begin();
 757        iter != controllers.end(); ++iter)
 758     (*iter)->ShowLauncher();
 759 }
 760
 761 void Shell::AddShellObserver(ShellObserver* observer) {
 762   observers_.AddObserver(observer);
 763 }
 764
 765 void Shell::RemoveShellObserver(ShellObserver* observer) {
 766   observers_.RemoveObserver(observer);
 767 }
 768
 769 void Shell::UpdateShelfVisibility() {
 770   RootWindowControllerList controllers = GetAllRootWindowControllers();
 771   for (RootWindowControllerList::iterator iter = controllers.begin();
 772        iter != controllers.end(); ++iter)
 773     if ((*iter)->shelf())
 774       (*iter)->UpdateShelfVisibility();
 775 }
 776
 777 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 778                                      aura::RootWindow* root_window) {
 779   ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 780       SetAutoHideBehavior(behavior);
 781 }
 782
 783 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 784     aura::RootWindow* root_window) const {
 785   return ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 786       auto_hide_behavior();
 787 }
 788
 789 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 790                               aura::RootWindow* root_window) {
 791   if (ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 792       SetAlignment(alignment)) {
 793     FOR_EACH_OBSERVER(
 794         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 795   }
 796 }
 797
 798 ShelfAlignment Shell::GetShelfAlignment(aura::RootWindow* root_window) {
 799   return internal::GetRootWindowController(root_window)->
 800       GetShelfLayoutManager()->GetAlignment();
 801 }
 802
 803 void Shell::SetDimming(bool should_dim) {
 804   RootWindowControllerList controllers = GetAllRootWindowControllers();
 805   for (RootWindowControllerList::iterator iter = controllers.begin();
 806        iter != controllers.end(); ++iter)
 807     (*iter)->screen_dimmer()->SetDimming(should_dim);
 808 }
 809
 810 void Shell::CreateModalBackground(aura::Window* window) {
 811   if (!modality_filter_) {
 812     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 813     AddPreTargetHandler(modality_filter_.get());
 814   }
 815   RootWindowControllerList controllers = GetAllRootWindowControllers();
 816   for (RootWindowControllerList::iterator iter = controllers.begin();
 817        iter != controllers.end(); ++iter)
 818     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 819 }
 820
 821 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 822   RootWindowControllerList controllers = GetAllRootWindowControllers();
 823   bool activated = false;
 824   for (RootWindowControllerList::iterator iter = controllers.begin();
 825        iter != controllers.end() && !activated; ++iter) {
 826     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 827         ActivateNextModalWindow();
 828   }
 829   if (!activated) {
 830     RemovePreTargetHandler(modality_filter_.get());
 831     modality_filter_.reset();
 832     for (RootWindowControllerList::iterator iter = controllers.begin();
 833          iter != controllers.end(); ++iter)
 834       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 835   }
 836 }
 837
 838 WebNotificationTray* Shell::GetWebNotificationTray() {
 839   return GetPrimaryRootWindowController()->shelf()->
 840       status_area_widget()->web_notification_tray();
 841 }
 842
 843 bool Shell::HasPrimaryStatusArea() {
 844   ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
 845   return shelf && shelf->status_area_widget();
 846 }
 847
 848 SystemTray* Shell::GetPrimarySystemTray() {
 849   return GetPrimaryRootWindowController()->GetSystemTray();
 850 }
 851
 852 LauncherDelegate* Shell::GetLauncherDelegate() {
 853   if (!launcher_delegate_) {
 854     // Creates LauncherItemDelegateManager before LauncherDelegate.
 855     launcher_item_delegate_manager_.reset(new LauncherItemDelegateManager);
 856     launcher_model_.reset(new LauncherModel);
 857     launcher_delegate_.reset(
 858         delegate_->CreateLauncherDelegate(launcher_model_.get()));
 859     app_list_shelf_item_delegate_.reset(
 860         new internal::AppListShelfItemDelegate);
 861   }
 862   return launcher_delegate_.get();
 863 }
 864
 865 void Shell::SetTouchHudProjectionEnabled(bool enabled) {
 866   if (is_touch_hud_projection_enabled_ == enabled)
 867     return;
 868
 869   is_touch_hud_projection_enabled_ = enabled;
 870   FOR_EACH_OBSERVER(ShellObserver, observers_,
 871                     OnTouchHudProjectionToggled(enabled));
 872 }
 873
 874 void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
 875   internal::RootWindowController* controller =
 876       new internal::RootWindowController(root);
 877   // Pass false for the |is_first_run_after_boot| parameter so we'll show a
 878   // black background on this display instead of trying to mimic the boot splash
 879   // screen.
 880   InitRootWindowController(controller, false);
 881
 882   controller->root_window_layout()->OnWindowResized();
 883   desktop_background_controller_->OnRootWindowAdded(root);
 884   high_contrast_controller_->OnRootWindowAdded(root);
 885   root->ShowRootWindow();
 886   // Activate new root for testing.
 887   // TODO(oshima): remove this.
 888   target_root_window_ = root;
 889
 890   // Create a launcher if a user is already logged.
 891   if (Shell::GetInstance()->session_state_delegate()->NumberOfLoggedInUsers())
 892     controller->shelf()->CreateLauncher();
 893 }
 894
 895 void Shell::DoInitialWorkspaceAnimation() {
 896   return GetPrimaryRootWindowController()->workspace_controller()->
 897       DoInitialAnimation();
 898 }
 899
 900 void Shell::InitRootWindowController(
 901     internal::RootWindowController* controller,
 902     bool first_run_after_boot) {
 903
 904   aura::RootWindow* root_window = controller->root_window();
 905   DCHECK(activation_client_);
 906   DCHECK(visibility_controller_.get());
 907   DCHECK(drag_drop_controller_.get());
 908   DCHECK(window_cycle_controller_.get());
 909
 910   aura::client::SetFocusClient(root_window, focus_client_.get());
 911   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 912   aura::client::SetActivationClient(root_window, activation_client_);
 913   views::corewm::FocusController* focus_controller =
 914       static_cast<views::corewm::FocusController*>(activation_client_);
 915   root_window->AddPreTargetHandler(focus_controller);
 916   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
 917   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
 918   aura::client::SetScreenPositionClient(root_window,
 919                                         screen_position_controller_.get());
 920   aura::client::SetCursorClient(root_window, &cursor_manager_);
 921   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
 922   aura::client::SetEventClient(root_window, event_client_.get());
 923
 924   if (nested_dispatcher_controller_) {
 925     aura::client::SetDispatcherClient(root_window,
 926                                       nested_dispatcher_controller_.get());
 927   }
 928   if (user_action_client_)
 929     aura::client::SetUserActionClient(root_window, user_action_client_.get());
 930
 931   controller->Init(first_run_after_boot);
 932 }
 933
 934 ////////////////////////////////////////////////////////////////////////////////
 935 // Shell, private:
 936
 937 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
 938   RootWindowControllerList controllers = GetAllRootWindowControllers();
 939   for (RootWindowControllerList::iterator iter = controllers.begin();
 940        iter != controllers.end(); ++iter) {
 941     internal::SystemModalContainerLayoutManager* layout_manager =
 942         (*iter)->GetSystemModalLayoutManager(window);
 943     if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
 944       return true;
 945   }
 946   return false;
 947 }
 948
 949 ////////////////////////////////////////////////////////////////////////////////
 950 // Shell, ui::EventTarget overrides:
 951
 952 bool Shell::CanAcceptEvent(const ui::Event& event) {
 953   return true;
 954 }
 955
 956 ui::EventTarget* Shell::GetParentTarget() {
 957   return NULL;
 958 }
 959
 960 void Shell::OnEvent(ui::Event* event) {
 961 }
 962
 963 ////////////////////////////////////////////////////////////////////////////////
 964 // Shell, aura::client::ActivationChangeObserver implementation:
 965
 966 void Shell::OnWindowActivated(aura::Window* gained_active,
 967                               aura::Window* lost_active) {
 968   if (gained_active)
 969     target_root_window_ = gained_active->GetRootWindow();
 970 }
 971
 972 }  // namespace ash