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