ash/shell.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/shell.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "ash/accelerators/focus_manager_factory.h"
  11 #include "ash/ash_switches.h"
  12 #include "ash/caps_lock_delegate.h"
  13 #include "ash/desktop_background/desktop_background_controller.h"
  14 #include "ash/desktop_background/desktop_background_view.h"
  15 #include "ash/desktop_background/user_wallpaper_delegate.h"
  16 #include "ash/display/display_controller.h"
  17 #include "ash/display/display_manager.h"
  18 #include "ash/display/event_transformation_handler.h"
  19 #include "ash/display/mouse_cursor_event_filter.h"
  20 #include "ash/display/screen_position_controller.h"
  21 #include "ash/drag_drop/drag_drop_controller.h"
  22 #include "ash/focus_cycler.h"
  23 #include "ash/high_contrast/high_contrast_controller.h"
  24 #include "ash/host/root_window_host_factory.h"
  25 #include "ash/launcher/launcher_delegate.h"
  26 #include "ash/launcher/launcher_model.h"
  27 #include "ash/magnifier/magnification_controller.h"
  28 #include "ash/magnifier/partial_magnification_controller.h"
  29 #include "ash/root_window_controller.h"
  30 #include "ash/screen_ash.h"
  31 #include "ash/session_state_delegate.h"
  32 #include "ash/shelf/shelf_layout_manager.h"
  33 #include "ash/shelf/shelf_widget.h"
  34 #include "ash/shell_delegate.h"
  35 #include "ash/shell_factory.h"
  36 #include "ash/shell_window_ids.h"
  37 #include "ash/system/locale/locale_notification_controller.h"
  38 #include "ash/system/status_area_widget.h"
  39 #include "ash/system/tray/system_tray_delegate.h"
  40 #include "ash/system/tray/system_tray_notifier.h"
  41 #include "ash/wm/activation_controller.h"
  42 #include "ash/wm/app_list_controller.h"
  43 #include "ash/wm/ash_activation_controller.h"
  44 #include "ash/wm/ash_focus_rules.h"
  45 #include "ash/wm/ash_native_cursor_manager.h"
  46 #include "ash/wm/base_layout_manager.h"
  47 #include "ash/wm/capture_controller.h"
  48 #include "ash/wm/coordinate_conversion.h"
  49 #include "ash/wm/custom_frame_view_ash.h"
  50 #include "ash/wm/event_client_impl.h"
  51 #include "ash/wm/event_rewriter_event_filter.h"
  52 #include "ash/wm/lock_state_controller.h"
  53 #include "ash/wm/lock_state_controller_impl2.h"
  54 #include "ash/wm/mru_window_tracker.h"
  55 #include "ash/wm/overlay_event_filter.h"
  56 #include "ash/wm/power_button_controller.h"
  57 #include "ash/wm/property_util.h"
  58 #include "ash/wm/resize_shadow_controller.h"
  59 #include "ash/wm/root_window_layout_manager.h"
  60 #include "ash/wm/screen_dimmer.h"
  61 #include "ash/wm/session_state_controller_impl.h"
  62 #include "ash/wm/system_gesture_event_filter.h"
  63 #include "ash/wm/system_modal_container_event_filter.h"
  64 #include "ash/wm/system_modal_container_layout_manager.h"
  65 #include "ash/wm/user_activity_detector.h"
  66 #include "ash/wm/video_detector.h"
  67 #include "ash/wm/window_animations.h"
  68 #include "ash/wm/window_cycle_controller.h"
  69 #include "ash/wm/window_properties.h"
  70 #include "ash/wm/window_selector_controller.h"
  71 #include "ash/wm/window_util.h"
  72 #include "ash/wm/workspace_controller.h"
  73 #include "base/bind.h"
  74 #include "base/command_line.h"
  75 #include "base/debug/leak_annotations.h"
  76 #include "ui/aura/client/aura_constants.h"
  77 #include "ui/aura/client/user_action_client.h"
  78 #include "ui/aura/env.h"
  79 #include "ui/aura/focus_manager.h"
  80 #include "ui/aura/layout_manager.h"
  81 #include "ui/aura/root_window.h"
  82 #include "ui/aura/window.h"
  83 #include "ui/base/ui_base_switches.h"
  84 #include "ui/compositor/layer.h"
  85 #include "ui/compositor/layer_animator.h"
  86 #include "ui/gfx/display.h"
  87 #include "ui/gfx/image/image_skia.h"
  88 #include "ui/gfx/screen.h"
  89 #include "ui/gfx/size.h"
  90 #include "ui/keyboard/keyboard.h"
  91 #include "ui/keyboard/keyboard_util.h"
  92 #include "ui/message_center/message_center.h"
  93 #include "ui/views/corewm/compound_event_filter.h"
  94 #include "ui/views/corewm/corewm_switches.h"
  95 #include "ui/views/corewm/focus_controller.h"
  96 #include "ui/views/corewm/input_method_event_filter.h"
  97 #include "ui/views/corewm/shadow_controller.h"
  98 #include "ui/views/corewm/tooltip_controller.h"
  99 #include "ui/views/corewm/visibility_controller.h"
 100 #include "ui/views/corewm/window_modality_controller.h"
 101 #include "ui/views/focus/focus_manager_factory.h"
 102 #include "ui/views/widget/native_widget_aura.h"
 103 #include "ui/views/widget/widget.h"
 104
 105 #if !defined(OS_MACOSX)
 106 #include "ash/accelerators/accelerator_controller.h"
 107 #include "ash/accelerators/accelerator_filter.h"
 108 #include "ash/accelerators/nested_dispatcher_controller.h"
 109 #endif
 110
 111 #if defined(OS_CHROMEOS)
 112 #if defined(USE_X11)
 113 #include "ash/ash_constants.h"
 114 #include "ash/display/display_change_observer_x11.h"
 115 #include "ash/display/display_error_observer.h"
 116 #include "ash/display/output_configurator_animation.h"
 117 #include "base/chromeos/chromeos_version.h"
 118 #include "base/message_loop/message_pump_aurax11.h"
 119 #include "chromeos/display/output_configurator.h"
 120 #include "content/public/browser/gpu_data_manager.h"
 121 #include "content/public/common/content_switches.h"
 122 #include "gpu/config/gpu_feature_type.h"
 123 #endif  // defined(USE_X11)
 124 #include "ash/system/chromeos/power/power_status.h"
 125 #endif  // defined(OS_CHROMEOS)
 126
 127 namespace ash {
 128
 129 namespace {
 130
 131 using aura::Window;
 132 using views::Widget;
 133
 134 // This dummy class is used for shell unit tests. We dont have chrome delegate
 135 // in these tests.
 136 class DummyUserWallpaperDelegate : public UserWallpaperDelegate {
 137  public:
 138   DummyUserWallpaperDelegate() {}
 139
 140   virtual ~DummyUserWallpaperDelegate() {}
 141
 142   virtual int GetAnimationType() OVERRIDE {
 143     return views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE;
 144   }
 145
 146   virtual bool ShouldShowInitialAnimation() OVERRIDE {
 147     return false;
 148   }
 149
 150   virtual void UpdateWallpaper() OVERRIDE {
 151   }
 152
 153   virtual void InitializeWallpaper() OVERRIDE {
 154     ash::Shell::GetInstance()->desktop_background_controller()->
 155         CreateEmptyWallpaper();
 156   }
 157
 158   virtual void OpenSetWallpaperPage() OVERRIDE {
 159   }
 160
 161   virtual bool CanOpenSetWallpaperPage() OVERRIDE {
 162     return false;
 163   }
 164
 165   virtual void OnWallpaperAnimationFinished() OVERRIDE {
 166   }
 167
 168   virtual void OnWallpaperBootAnimationFinished() OVERRIDE {
 169   }
 170
 171  private:
 172   DISALLOW_COPY_AND_ASSIGN(DummyUserWallpaperDelegate);
 173 };
 174
 175 // A Corewm VisibilityController subclass that calls the Ash animation routine
 176 // so we can pick up our extended animations. See ash/wm/window_animations.h.
 177 class AshVisibilityController : public views::corewm::VisibilityController {
 178  public:
 179   AshVisibilityController() {}
 180   virtual ~AshVisibilityController() {}
 181
 182  private:
 183   // Overridden from views::corewm::VisibilityController:
 184   virtual bool CallAnimateOnChildWindowVisibilityChanged(
 185       aura::Window* window,
 186       bool visible) OVERRIDE {
 187     return AnimateOnChildWindowVisibilityChanged(window, visible);
 188   }
 189
 190   DISALLOW_COPY_AND_ASSIGN(AshVisibilityController);
 191 };
 192
 193 }  // namespace
 194
 195 // static
 196 Shell* Shell::instance_ = NULL;
 197 // static
 198 bool Shell::initially_hide_cursor_ = false;
 199
 200 ////////////////////////////////////////////////////////////////////////////////
 201 // Shell, public:
 202
 203 Shell::Shell(ShellDelegate* delegate)
 204     : screen_(new ScreenAsh),
 205       target_root_window_(NULL),
 206       scoped_target_root_window_(NULL),
 207       delegate_(delegate),
 208       activation_client_(NULL),
 209 #if defined(OS_CHROMEOS) && defined(USE_X11)
 210       output_configurator_(new chromeos::OutputConfigurator()),
 211 #endif  // defined(OS_CHROMEOS)
 212       native_cursor_manager_(new AshNativeCursorManager),
 213       cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
 214           native_cursor_manager_)),
 215       browser_context_(NULL),
 216       simulate_modal_window_open_for_testing_(false),
 217       is_touch_hud_projection_enabled_(false) {
 218   DCHECK(delegate_.get());
 219   display_manager_.reset(new internal::DisplayManager);
 220
 221   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
 222   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
 223   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
 224     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
 225   display_controller_.reset(new DisplayController);
 226 #if defined(OS_CHROMEOS) && defined(USE_X11)
 227   bool is_panel_fitting_disabled =
 228       content::GpuDataManager::GetInstance()->IsFeatureBlacklisted(
 229           gpu::GPU_FEATURE_TYPE_PANEL_FITTING) ||
 230       CommandLine::ForCurrentProcess()->HasSwitch(
 231           ::switches::kDisablePanelFitting);
 232
 233   output_configurator_->Init(!is_panel_fitting_disabled);
 234
 235   base::MessagePumpAuraX11::Current()->AddDispatcherForRootWindow(
 236       output_configurator());
 237   // We can't do this with a root window listener because XI_HierarchyChanged
 238   // messages don't have a target window.
 239   base::MessagePumpAuraX11::Current()->AddObserver(output_configurator());
 240 #endif  // defined(OS_CHROMEOS)
 241   AddPreTargetHandler(this);
 242
 243 #if defined(OS_CHROMEOS)
 244   internal::PowerStatus::Initialize();
 245 #endif
 246 }
 247
 248 Shell::~Shell() {
 249   views::FocusManagerFactory::Install(NULL);
 250
 251   // Remove the focus from any window. This will prevent overhead and side
 252   // effects (e.g. crashes) from changing focus during shutdown.
 253   // See bug crbug.com/134502.
 254   aura::client::GetFocusClient(GetPrimaryRootWindow())->FocusWindow(NULL);
 255
 256   // Please keep in same order as in Init() because it's easy to miss one.
 257   RemovePreTargetHandler(event_rewriter_filter_.get());
 258   RemovePreTargetHandler(user_activity_detector_.get());
 259   RemovePreTargetHandler(overlay_filter_.get());
 260   RemovePreTargetHandler(input_method_filter_.get());
 261   RemovePreTargetHandler(window_modality_controller_.get());
 262   if (mouse_cursor_filter_)
 263     RemovePreTargetHandler(mouse_cursor_filter_.get());
 264   RemovePreTargetHandler(system_gesture_filter_.get());
 265   RemovePreTargetHandler(event_transformation_handler_.get());
 266 #if !defined(OS_MACOSX)
 267   RemovePreTargetHandler(accelerator_filter_.get());
 268 #endif
 269
 270   // TooltipController is deleted with the Shell so removing its references.
 271   RemovePreTargetHandler(tooltip_controller_.get());
 272
 273   // AppList needs to be released before shelf layout manager, which is
 274   // destroyed with launcher container in the loop below. However, app list
 275   // container is now on top of launcher container and released after it.
 276   // TODO(xiyuan): Move it back when app list container is no longer needed.
 277   app_list_controller_.reset();
 278
 279   // Destroy SystemTrayDelegate before destroying the status area(s).
 280   system_tray_delegate_->Shutdown();
 281   system_tray_delegate_.reset();
 282
 283   locale_notification_controller_.reset();
 284
 285   // Destroy all child windows including widgets.
 286   display_controller_->CloseChildWindows();
 287
 288   // Destroy SystemTrayNotifier after destroying SystemTray as TrayItems
 289   // needs to remove observers from it.
 290   system_tray_notifier_.reset();
 291
 292   // These need a valid Shell instance to clean up properly, so explicitly
 293   // delete them before invalidating the instance.
 294   // Alphabetical. TODO(oshima): sort.
 295   drag_drop_controller_.reset();
 296   magnification_controller_.reset();
 297   partial_magnification_controller_.reset();
 298   resize_shadow_controller_.reset();
 299   shadow_controller_.reset();
 300   tooltip_controller_.reset();
 301   event_client_.reset();
 302   window_cycle_controller_.reset();
 303   capture_controller_.reset();
 304   nested_dispatcher_controller_.reset();
 305   user_action_client_.reset();
 306   visibility_controller_.reset();
 307   launcher_delegate_.reset();
 308   launcher_model_.reset();
 309   video_detector_.reset();
 310
 311   power_button_controller_.reset();
 312   lock_state_controller_.reset();
 313   mru_window_tracker_.reset();
 314
 315   // This also deletes all RootWindows. Note that we invoke Shutdown() on
 316   // DisplayController before resetting |display_controller_|, since destruction
 317   // of its owned RootWindowControllers relies on the value.
 318   display_controller_->Shutdown();
 319   display_controller_.reset();
 320   screen_position_controller_.reset();
 321
 322   // Delete the activation controller after other controllers and launcher
 323   // because they might have registered ActivationChangeObserver.
 324   activation_controller_.reset();
 325
 326 #if defined(OS_CHROMEOS) && defined(USE_X11)
 327    if (display_change_observer_)
 328     output_configurator_->RemoveObserver(display_change_observer_.get());
 329   if (output_configurator_animation_)
 330     output_configurator_->RemoveObserver(output_configurator_animation_.get());
 331   if (display_error_observer_)
 332     output_configurator_->RemoveObserver(display_error_observer_.get());
 333   base::MessagePumpAuraX11::Current()->RemoveDispatcherForRootWindow(
 334       output_configurator());
 335   base::MessagePumpAuraX11::Current()->RemoveObserver(output_configurator());
 336   display_change_observer_.reset();
 337 #endif  // defined(OS_CHROMEOS)
 338
 339 #if defined(OS_CHROMEOS)
 340   internal::PowerStatus::Shutdown();
 341 #endif
 342
 343   DCHECK(instance_ == this);
 344   instance_ = NULL;
 345 }
 346
 347 // static
 348 Shell* Shell::CreateInstance(ShellDelegate* delegate) {
 349   CHECK(!instance_);
 350   instance_ = new Shell(delegate);
 351   instance_->Init();
 352   return instance_;
 353 }
 354
 355 // static
 356 Shell* Shell::GetInstance() {
 357   DCHECK(instance_);
 358   return instance_;
 359 }
 360
 361 // static
 362 bool Shell::HasInstance() {
 363   return !!instance_;
 364 }
 365
 366 // static
 367 void Shell::DeleteInstance() {
 368   delete instance_;
 369   instance_ = NULL;
 370 }
 371
 372 // static
 373 internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
 374   return GetRootWindowController(GetPrimaryRootWindow());
 375 }
 376
 377 // static
 378 Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
 379   return Shell::GetInstance()->display_controller()->
 380       GetAllRootWindowControllers();
 381 }
 382
 383 // static
 384 aura::RootWindow* Shell::GetPrimaryRootWindow() {
 385   return GetInstance()->display_controller()->GetPrimaryRootWindow();
 386 }
 387
 388 // static
 389 aura::RootWindow* Shell::GetActiveRootWindow() {
 390   Shell* shell = GetInstance();
 391   if (shell->scoped_target_root_window_)
 392     return shell->scoped_target_root_window_;
 393   return shell->target_root_window_;
 394 }
 395
 396 // static
 397 gfx::Screen* Shell::GetScreen() {
 398   return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
 399 }
 400
 401 // static
 402 Shell::RootWindowList Shell::GetAllRootWindows() {
 403   return Shell::GetInstance()->display_controller()->
 404       GetAllRootWindows();
 405 }
 406
 407 // static
 408 aura::Window* Shell::GetContainer(aura::RootWindow* root_window,
 409                                   int container_id) {
 410   return root_window->GetChildById(container_id);
 411 }
 412
 413 // static
 414 const aura::Window* Shell::GetContainer(const aura::RootWindow* root_window,
 415                                         int container_id) {
 416   return root_window->GetChildById(container_id);
 417 }
 418
 419 // static
 420 std::vector<aura::Window*> Shell::GetContainersFromAllRootWindows(
 421     int container_id,
 422     aura::RootWindow* priority_root) {
 423   std::vector<aura::Window*> containers;
 424   RootWindowList root_windows = GetAllRootWindows();
 425   for (RootWindowList::const_iterator it = root_windows.begin();
 426        it != root_windows.end(); ++it) {
 427     aura::Window* container = (*it)->GetChildById(container_id);
 428     if (container) {
 429       if (priority_root && priority_root->Contains(container))
 430         containers.insert(containers.begin(), container);
 431       else
 432         containers.push_back(container);
 433     }
 434   }
 435   return containers;
 436 }
 437
 438 // static
 439 bool Shell::IsForcedMaximizeMode() {
 440   CommandLine* command_line = CommandLine::ForCurrentProcess();
 441   return command_line->HasSwitch(switches::kForcedMaximizeMode);
 442 }
 443
 444 void Shell::Init() {
 445   CommandLine* command_line = CommandLine::ForCurrentProcess();
 446
 447   delegate_->PreInit();
 448   bool display_initialized = false;
 449 #if defined(OS_CHROMEOS) && defined(USE_X11)
 450   output_configurator_animation_.reset(
 451       new internal::OutputConfiguratorAnimation());
 452   output_configurator_->AddObserver(output_configurator_animation_.get());
 453   if (base::chromeos::IsRunningOnChromeOS()) {
 454     display_change_observer_.reset(new internal::DisplayChangeObserverX11);
 455     // Register |display_change_observer_| first so that the rest of
 456     // observer gets invoked after the root windows are configured.
 457     output_configurator_->AddObserver(display_change_observer_.get());
 458     display_error_observer_.reset(new internal::DisplayErrorObserver());
 459     output_configurator_->AddObserver(display_error_observer_.get());
 460     output_configurator_->set_state_controller(display_change_observer_.get());
 461     if (!command_line->HasSwitch(ash::switches::kAshDisableSoftwareMirroring))
 462       output_configurator_->set_mirroring_controller(display_manager_.get());
 463     output_configurator_->Start(
 464         delegate_->IsFirstRunAfterBoot() ? kChromeOsBootColor : 0);
 465     display_initialized = true;
 466   }
 467 #endif
 468   if (!display_initialized)
 469     display_manager_->InitFromCommandLine();
 470
 471   // Install the custom factory first so that views::FocusManagers for Tray,
 472   // Launcher, and WallPaper could be created by the factory.
 473   views::FocusManagerFactory::Install(new AshFocusManagerFactory);
 474
 475   env_filter_.reset(new views::corewm::CompoundEventFilter);
 476   AddPreTargetHandler(env_filter_.get());
 477
 478   // Env creates the compositor. Historically it seems to have been implicitly
 479   // initialized first by the ActivationController, but now that FocusController
 480   // no longer does this we need to do it explicitly.
 481   aura::Env::GetInstance();
 482   if (views::corewm::UseFocusController()) {
 483     views::corewm::FocusController* focus_controller =
 484         new views::corewm::FocusController(new wm::AshFocusRules);
 485     focus_client_.reset(focus_controller);
 486     activation_client_ = focus_controller;
 487     activation_client_->AddObserver(this);
 488   } else {
 489     focus_client_.reset(new aura::FocusManager);
 490     activation_controller_.reset(
 491         new internal::ActivationController(
 492             focus_client_.get(),
 493             new internal::AshActivationController));
 494     activation_client_ = activation_controller_.get();
 495     AddPreTargetHandler(activation_controller_.get());
 496   }
 497
 498   focus_cycler_.reset(new internal::FocusCycler());
 499
 500   screen_position_controller_.reset(new internal::ScreenPositionController);
 501   root_window_host_factory_.reset(delegate_->CreateRootWindowHostFactory());
 502
 503   display_controller_->Start();
 504   display_controller_->InitPrimaryDisplay();
 505   aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
 506   target_root_window_ = root_window;
 507
 508   cursor_manager_.SetDisplay(DisplayController::GetPrimaryDisplay());
 509
 510 #if !defined(OS_MACOSX)
 511   nested_dispatcher_controller_.reset(new NestedDispatcherController);
 512   accelerator_controller_.reset(new AcceleratorController);
 513 #endif
 514
 515   // The order in which event filters are added is significant.
 516   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
 517   AddPreTargetHandler(event_rewriter_filter_.get());
 518
 519   // UserActivityDetector passes events to observers, so let them get
 520   // rewritten first.
 521   user_activity_detector_.reset(new UserActivityDetector);
 522   AddPreTargetHandler(user_activity_detector_.get());
 523
 524   overlay_filter_.reset(new internal::OverlayEventFilter);
 525   AddPreTargetHandler(overlay_filter_.get());
 526   AddShellObserver(overlay_filter_.get());
 527
 528   input_method_filter_.reset(new views::corewm::InputMethodEventFilter(
 529                                  root_window->GetAcceleratedWidget()));
 530   AddPreTargetHandler(input_method_filter_.get());
 531
 532 #if !defined(OS_MACOSX)
 533   accelerator_filter_.reset(new internal::AcceleratorFilter);
 534   AddPreTargetHandler(accelerator_filter_.get());
 535 #endif
 536
 537   event_transformation_handler_.reset(new internal::EventTransformationHandler);
 538   AddPreTargetHandler(event_transformation_handler_.get());
 539
 540   system_gesture_filter_.reset(new internal::SystemGestureEventFilter);
 541   AddPreTargetHandler(system_gesture_filter_.get());
 542
 543   capture_controller_.reset(new internal::CaptureController);
 544
 545   // The keyboard system must be initialized before the RootWindowController is
 546   // created.
 547   if (keyboard::IsKeyboardEnabled())
 548     keyboard::InitializeKeyboard();
 549
 550   if (command_line->HasSwitch(ash::switches::kAshDisableNewLockAnimations))
 551     lock_state_controller_.reset(new SessionStateControllerImpl);
 552   else
 553     lock_state_controller_.reset(new LockStateControllerImpl2);
 554   power_button_controller_.reset(new PowerButtonController(
 555       lock_state_controller_.get()));
 556   AddShellObserver(lock_state_controller_.get());
 557
 558   drag_drop_controller_.reset(new internal::DragDropController);
 559   mouse_cursor_filter_.reset(new internal::MouseCursorEventFilter());
 560   PrependPreTargetHandler(mouse_cursor_filter_.get());
 561
 562   // Create Controllers that may need root window.
 563   // TODO(oshima): Move as many controllers before creating
 564   // RootWindowController as possible.
 565   visibility_controller_.reset(new AshVisibilityController);
 566   user_action_client_.reset(delegate_->CreateUserActionClient());
 567   window_modality_controller_.reset(
 568       new views::corewm::WindowModalityController);
 569   AddPreTargetHandler(window_modality_controller_.get());
 570
 571   magnification_controller_.reset(
 572       MagnificationController::CreateInstance());
 573   mru_window_tracker_.reset(new MruWindowTracker(activation_client_));
 574
 575   partial_magnification_controller_.reset(
 576       new PartialMagnificationController());
 577
 578   high_contrast_controller_.reset(new HighContrastController);
 579   video_detector_.reset(new VideoDetector);
 580   window_cycle_controller_.reset(new WindowCycleController());
 581   window_selector_controller_.reset(new WindowSelectorController());
 582
 583   tooltip_controller_.reset(new views::corewm::TooltipController(
 584                                 gfx::SCREEN_TYPE_ALTERNATE));
 585   AddPreTargetHandler(tooltip_controller_.get());
 586
 587   event_client_.reset(new internal::EventClientImpl);
 588
 589   // This controller needs to be set before SetupManagedWindowMode.
 590   desktop_background_controller_.reset(new DesktopBackgroundController());
 591   user_wallpaper_delegate_.reset(delegate_->CreateUserWallpaperDelegate());
 592   if (!user_wallpaper_delegate_)
 593     user_wallpaper_delegate_.reset(new DummyUserWallpaperDelegate());
 594
 595   // StatusAreaWidget uses Shell's CapsLockDelegate.
 596   caps_lock_delegate_.reset(delegate_->CreateCapsLockDelegate());
 597
 598   session_state_delegate_.reset(delegate_->CreateSessionStateDelegate());
 599
 600   if (!command_line->HasSwitch(views::corewm::switches::kNoDropShadows)) {
 601     resize_shadow_controller_.reset(new internal::ResizeShadowController());
 602     shadow_controller_.reset(
 603         new views::corewm::ShadowController(activation_client_));
 604   }
 605
 606   // Create system_tray_notifier_ before the delegate.
 607   system_tray_notifier_.reset(new ash::SystemTrayNotifier());
 608
 609   // Initialize system_tray_delegate_ before initializing StatusAreaWidget.
 610   system_tray_delegate_.reset(delegate()->CreateSystemTrayDelegate());
 611   if (!system_tray_delegate_)
 612     system_tray_delegate_.reset(SystemTrayDelegate::CreateDummyDelegate());
 613
 614   internal::RootWindowController* root_window_controller =
 615       new internal::RootWindowController(root_window);
 616   InitRootWindowController(root_window_controller,
 617                            delegate_->IsFirstRunAfterBoot());
 618
 619   locale_notification_controller_.reset(
 620       new internal::LocaleNotificationController);
 621
 622   // Initialize system_tray_delegate_ after StatusAreaWidget is created.
 623   system_tray_delegate_->Initialize();
 624
 625   display_controller_->InitSecondaryDisplays();
 626
 627   // Force Layout
 628   root_window_controller->root_window_layout()->OnWindowResized();
 629
 630   // It needs to be created after OnWindowResized has been called, otherwise the
 631   // widget will not paint when restoring after a browser crash.  Also it needs
 632   // to be created after InitSecondaryDisplays() to initialize the wallpapers in
 633   // the correct size.
 634   user_wallpaper_delegate_->InitializeWallpaper();
 635
 636   if (initially_hide_cursor_)
 637     cursor_manager_.HideCursor();
 638   cursor_manager_.SetCursor(ui::kCursorPointer);
 639
 640   if (!cursor_manager_.IsCursorVisible()) {
 641     // Cursor might have been hidden by something other than chrome.
 642     // Let the first mouse event show the cursor.
 643     env_filter_->set_cursor_hidden_by_filter(true);
 644   }
 645 }
 646
 647 void Shell::ShowContextMenu(const gfx::Point& location_in_screen,
 648                             ui::MenuSourceType source_type) {
 649   // No context menus if there is no session with an active user.
 650   if (!session_state_delegate_->NumberOfLoggedInUsers())
 651     return;
 652   // No context menus when screen is locked.
 653   if (session_state_delegate_->IsScreenLocked())
 654     return;
 655
 656   aura::RootWindow* root =
 657       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
 658   // TODO(oshima): The root and root window controller shouldn't be
 659   // NULL even for the out-of-bounds |location_in_screen| (It should
 660   // return the primary root). Investigate why/how this is
 661   // happening. crbug.com/165214.
 662   internal::RootWindowController* rwc = GetRootWindowController(root);
 663   CHECK(rwc) << "root=" << root
 664              << ", location:" << location_in_screen.ToString();
 665   if (rwc)
 666     rwc->ShowContextMenu(location_in_screen, source_type);
 667 }
 668
 669 void Shell::ToggleAppList(aura::Window* window) {
 670   // If the context window is not given, show it on the active root window.
 671   if (!window)
 672     window = GetActiveRootWindow();
 673   if (!app_list_controller_)
 674     app_list_controller_.reset(new internal::AppListController);
 675   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 676 }
 677
 678 void Shell::SetDragAndDropHostOfCurrentAppList(
 679     app_list::ApplicationDragAndDropHost* drag_and_drop_host) {
 680   if (app_list_controller_.get())
 681     app_list_controller_->SetDragAndDropHostOfCurrentAppList(
 682         drag_and_drop_host);
 683 }
 684
 685 bool Shell::GetAppListTargetVisibility() const {
 686   return app_list_controller_.get() &&
 687       app_list_controller_->GetTargetVisibility();
 688 }
 689
 690 aura::Window* Shell::GetAppListWindow() {
 691   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 692 }
 693
 694 bool Shell::IsSystemModalWindowOpen() const {
 695   if (simulate_modal_window_open_for_testing_)
 696     return true;
 697   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
 698       internal::kShellWindowId_SystemModalContainer, NULL);
 699   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
 700        cit != containers.end(); ++cit) {
 701     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
 702          wit != (*cit)->children().end(); ++wit) {
 703       if ((*wit)->GetProperty(aura::client::kModalKey) ==
 704           ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
 705         return true;
 706       }
 707     }
 708   }
 709   return false;
 710 }
 711
 712 views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
 713     views::Widget* widget) {
 714   // Use translucent-style window frames for dialogs.
 715   CustomFrameViewAsh* frame_view = new CustomFrameViewAsh;
 716   frame_view->Init(widget);
 717   return frame_view;
 718 }
 719
 720 void Shell::RotateFocus(Direction direction) {
 721   focus_cycler_->RotateFocus(
 722       direction == FORWARD ? internal::FocusCycler::FORWARD :
 723                              internal::FocusCycler::BACKWARD);
 724 }
 725
 726 void Shell::SetDisplayWorkAreaInsets(Window* contains,
 727                                      const gfx::Insets& insets) {
 728   if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
 729           contains, insets)) {
 730     return;
 731   }
 732   FOR_EACH_OBSERVER(ShellObserver, observers_,
 733                     OnDisplayWorkAreaInsetsChanged());
 734 }
 735
 736 void Shell::OnLoginStateChanged(user::LoginStatus status) {
 737   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
 738 }
 739
 740 void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 741   RootWindowControllerList controllers = GetAllRootWindowControllers();
 742   for (RootWindowControllerList::iterator iter = controllers.begin();
 743        iter != controllers.end(); ++iter)
 744     (*iter)->UpdateAfterLoginStatusChange(status);
 745 }
 746
 747 void Shell::OnAppTerminating() {
 748   FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
 749 }
 750
 751 void Shell::OnLockStateChanged(bool locked) {
 752   FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
 753 }
 754
 755 void Shell::CreateLauncher() {
 756   RootWindowControllerList controllers = GetAllRootWindowControllers();
 757   for (RootWindowControllerList::iterator iter = controllers.begin();
 758        iter != controllers.end(); ++iter)
 759     (*iter)->shelf()->CreateLauncher();
 760 }
 761
 762 void Shell::ShowLauncher() {
 763   RootWindowControllerList controllers = GetAllRootWindowControllers();
 764   for (RootWindowControllerList::iterator iter = controllers.begin();
 765        iter != controllers.end(); ++iter)
 766     (*iter)->ShowLauncher();
 767 }
 768
 769 void Shell::AddShellObserver(ShellObserver* observer) {
 770   observers_.AddObserver(observer);
 771 }
 772
 773 void Shell::RemoveShellObserver(ShellObserver* observer) {
 774   observers_.RemoveObserver(observer);
 775 }
 776
 777 void Shell::UpdateShelfVisibility() {
 778   RootWindowControllerList controllers = GetAllRootWindowControllers();
 779   for (RootWindowControllerList::iterator iter = controllers.begin();
 780        iter != controllers.end(); ++iter)
 781     if ((*iter)->shelf())
 782       (*iter)->UpdateShelfVisibility();
 783 }
 784
 785 void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
 786                                      aura::RootWindow* root_window) {
 787   ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 788       SetAutoHideBehavior(behavior);
 789 }
 790
 791 ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
 792     aura::RootWindow* root_window) const {
 793   return ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 794       auto_hide_behavior();
 795 }
 796
 797 void Shell::SetShelfAlignment(ShelfAlignment alignment,
 798                               aura::RootWindow* root_window) {
 799   if (ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
 800       SetAlignment(alignment)) {
 801     FOR_EACH_OBSERVER(
 802         ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
 803   }
 804 }
 805
 806 ShelfAlignment Shell::GetShelfAlignment(aura::RootWindow* root_window) {
 807   return GetRootWindowController(root_window)->
 808       GetShelfLayoutManager()->GetAlignment();
 809 }
 810
 811 void Shell::SetDimming(bool should_dim) {
 812   RootWindowControllerList controllers = GetAllRootWindowControllers();
 813   for (RootWindowControllerList::iterator iter = controllers.begin();
 814        iter != controllers.end(); ++iter)
 815     (*iter)->screen_dimmer()->SetDimming(should_dim);
 816 }
 817
 818 void Shell::CreateModalBackground(aura::Window* window) {
 819   if (!modality_filter_) {
 820     modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
 821     AddPreTargetHandler(modality_filter_.get());
 822   }
 823   RootWindowControllerList controllers = GetAllRootWindowControllers();
 824   for (RootWindowControllerList::iterator iter = controllers.begin();
 825        iter != controllers.end(); ++iter)
 826     (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
 827 }
 828
 829 void Shell::OnModalWindowRemoved(aura::Window* removed) {
 830   RootWindowControllerList controllers = GetAllRootWindowControllers();
 831   bool activated = false;
 832   for (RootWindowControllerList::iterator iter = controllers.begin();
 833        iter != controllers.end() && !activated; ++iter) {
 834     activated = (*iter)->GetSystemModalLayoutManager(removed)->
 835         ActivateNextModalWindow();
 836   }
 837   if (!activated) {
 838     RemovePreTargetHandler(modality_filter_.get());
 839     modality_filter_.reset();
 840     for (RootWindowControllerList::iterator iter = controllers.begin();
 841          iter != controllers.end(); ++iter)
 842       (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
 843   }
 844 }
 845
 846 WebNotificationTray* Shell::GetWebNotificationTray() {
 847   return GetPrimaryRootWindowController()->shelf()->
 848       status_area_widget()->web_notification_tray();
 849 }
 850
 851 bool Shell::HasPrimaryStatusArea() {
 852   ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
 853   return shelf && shelf->status_area_widget();
 854 }
 855
 856 SystemTray* Shell::GetPrimarySystemTray() {
 857   return GetPrimaryRootWindowController()->GetSystemTray();
 858 }
 859
 860 LauncherDelegate* Shell::GetLauncherDelegate() {
 861   if (!launcher_delegate_) {
 862     launcher_model_.reset(new LauncherModel);
 863     launcher_delegate_.reset(
 864         delegate_->CreateLauncherDelegate(launcher_model_.get()));
 865   }
 866   return launcher_delegate_.get();
 867 }
 868
 869 void Shell::SetTouchHudProjectionEnabled(bool enabled) {
 870   if (is_touch_hud_projection_enabled_ == enabled)
 871     return;
 872
 873   is_touch_hud_projection_enabled_ = enabled;
 874   FOR_EACH_OBSERVER(ShellObserver, observers_,
 875                     OnTouchHudProjectionToggled(enabled));
 876 }
 877
 878 void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
 879   internal::RootWindowController* controller =
 880       new internal::RootWindowController(root);
 881   // Pass false for the |is_first_run_after_boot| parameter so we'll show a
 882   // black background on this display instead of trying to mimic the boot splash
 883   // screen.
 884   InitRootWindowController(controller, false);
 885
 886   controller->root_window_layout()->OnWindowResized();
 887   desktop_background_controller_->OnRootWindowAdded(root);
 888   high_contrast_controller_->OnRootWindowAdded(root);
 889   root->ShowRootWindow();
 890   // Activate new root for testing.
 891   // TODO(oshima): remove this.
 892   target_root_window_ = root;
 893
 894   // Create a launcher if a user is already logged.
 895   if (Shell::GetInstance()->session_state_delegate()->NumberOfLoggedInUsers())
 896     controller->shelf()->CreateLauncher();
 897 }
 898
 899 void Shell::DoInitialWorkspaceAnimation() {
 900   return GetPrimaryRootWindowController()->workspace_controller()->
 901       DoInitialAnimation();
 902 }
 903
 904 void Shell::InitRootWindowController(
 905     internal::RootWindowController* controller,
 906     bool first_run_after_boot) {
 907
 908   aura::RootWindow* root_window = controller->root_window();
 909   DCHECK(activation_client_);
 910   DCHECK(visibility_controller_.get());
 911   DCHECK(drag_drop_controller_.get());
 912   DCHECK(capture_controller_.get());
 913   DCHECK(window_cycle_controller_.get());
 914
 915   aura::client::SetFocusClient(root_window, focus_client_.get());
 916   input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
 917   aura::client::SetActivationClient(root_window, activation_client_);
 918   if (views::corewm::UseFocusController()) {
 919     views::corewm::FocusController* controller =
 920         static_cast<views::corewm::FocusController*>(activation_client_);
 921     root_window->AddPreTargetHandler(controller);
 922   }
 923   aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
 924   aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
 925   aura::client::SetCaptureClient(root_window, capture_controller_.get());
 926   aura::client::SetScreenPositionClient(root_window,
 927                                         screen_position_controller_.get());
 928   aura::client::SetCursorClient(root_window, &cursor_manager_);
 929   aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
 930   aura::client::SetEventClient(root_window, event_client_.get());
 931
 932   if (nested_dispatcher_controller_) {
 933     aura::client::SetDispatcherClient(root_window,
 934                                       nested_dispatcher_controller_.get());
 935   }
 936   if (user_action_client_)
 937     aura::client::SetUserActionClient(root_window, user_action_client_.get());
 938
 939   controller->Init(first_run_after_boot);
 940
 941   mru_window_tracker_->OnRootWindowAdded(root_window);
 942 }
 943
 944 ////////////////////////////////////////////////////////////////////////////////
 945 // Shell, private:
 946
 947 bool Shell::CanWindowReceiveEvents(aura::Window* window) {
 948   RootWindowControllerList controllers = GetAllRootWindowControllers();
 949   for (RootWindowControllerList::iterator iter = controllers.begin();
 950        iter != controllers.end(); ++iter) {
 951     internal::SystemModalContainerLayoutManager* layout_manager =
 952         (*iter)->GetSystemModalLayoutManager(window);
 953     if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
 954       return true;
 955   }
 956   return false;
 957 }
 958
 959 ////////////////////////////////////////////////////////////////////////////////
 960 // Shell, ui::EventTarget overrides:
 961
 962 bool Shell::CanAcceptEvent(const ui::Event& event) {
 963   return true;
 964 }
 965
 966 ui::EventTarget* Shell::GetParentTarget() {
 967   return NULL;
 968 }
 969
 970 void Shell::OnEvent(ui::Event* event) {
 971 }
 972
 973 ////////////////////////////////////////////////////////////////////////////////
 974 // Shell, aura::client::ActivationChangeObserver implementation:
 975
 976 void Shell::OnWindowActivated(aura::Window* gained_active,
 977                               aura::Window* lost_active) {
 978   if (gained_active)
 979     target_root_window_ = gained_active->GetRootWindow();
 980 }
 981
 982 }  // namespace ash