shell.cc revision bb1529ce867d8845a77ec7cdf3e3003ef1771a40 
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
127namespace ash {
128
129namespace {
130
131using aura::Window;
132using views::Widget;
133
134// This dummy class is used for shell unit tests. We dont have chrome delegate
135// in these tests.
136class 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.
177class 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
196Shell* Shell::instance_ = NULL;
197// static
198bool Shell::initially_hide_cursor_ = false;
199
200////////////////////////////////////////////////////////////////////////////////
201// Shell, public:
202
203Shell::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
248Shell::~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
348Shell* Shell::CreateInstance(ShellDelegate* delegate) {
349  CHECK(!instance_);
350  instance_ = new Shell(delegate);
351  instance_->Init();
352  return instance_;
353}
354
355// static
356Shell* Shell::GetInstance() {
357  DCHECK(instance_);
358  return instance_;
359}
360
361// static
362bool Shell::HasInstance() {
363  return !!instance_;
364}
365
366// static
367void Shell::DeleteInstance() {
368  delete instance_;
369  instance_ = NULL;
370}
371
372// static
373internal::RootWindowController* Shell::GetPrimaryRootWindowController() {
374  return GetRootWindowController(GetPrimaryRootWindow());
375}
376
377// static
378Shell::RootWindowControllerList Shell::GetAllRootWindowControllers() {
379  return Shell::GetInstance()->display_controller()->
380      GetAllRootWindowControllers();
381}
382
383// static
384aura::RootWindow* Shell::GetPrimaryRootWindow() {
385  return GetInstance()->display_controller()->GetPrimaryRootWindow();
386}
387
388// static
389aura::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
397gfx::Screen* Shell::GetScreen() {
398  return gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
399}
400
401// static
402Shell::RootWindowList Shell::GetAllRootWindows() {
403  return Shell::GetInstance()->display_controller()->
404      GetAllRootWindows();
405}
406
407// static
408aura::Window* Shell::GetContainer(aura::RootWindow* root_window,
409                                  int container_id) {
410  return root_window->GetChildById(container_id);
411}
412
413// static
414const aura::Window* Shell::GetContainer(const aura::RootWindow* root_window,
415                                        int container_id) {
416  return root_window->GetChildById(container_id);
417}
418
419// static
420std::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
439bool Shell::IsForcedMaximizeMode() {
440  CommandLine* command_line = CommandLine::ForCurrentProcess();
441  return command_line->HasSwitch(switches::kForcedMaximizeMode);
442}
443
444void 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
647void 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
669void 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
678bool Shell::GetAppListTargetVisibility() const {
679  return app_list_controller_.get() &&
680      app_list_controller_->GetTargetVisibility();
681}
682
683aura::Window* Shell::GetAppListWindow() {
684  return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
685}
686
687bool Shell::IsSystemModalWindowOpen() const {
688  if (simulate_modal_window_open_for_testing_)
689    return true;
690  const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
691      internal::kShellWindowId_SystemModalContainer, NULL);
692  for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
693       cit != containers.end(); ++cit) {
694    for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
695         wit != (*cit)->children().end(); ++wit) {
696      if ((*wit)->GetProperty(aura::client::kModalKey) ==
697          ui::MODAL_TYPE_SYSTEM && (*wit)->TargetVisibility()) {
698        return true;
699      }
700    }
701  }
702  return false;
703}
704
705views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
706    views::Widget* widget) {
707  // Use translucent-style window frames for dialogs.
708  CustomFrameViewAsh* frame_view = new CustomFrameViewAsh;
709  frame_view->Init(widget);
710  return frame_view;
711}
712
713void Shell::RotateFocus(Direction direction) {
714  focus_cycler_->RotateFocus(
715      direction == FORWARD ? internal::FocusCycler::FORWARD :
716                             internal::FocusCycler::BACKWARD);
717}
718
719void Shell::SetDisplayWorkAreaInsets(Window* contains,
720                                     const gfx::Insets& insets) {
721  if (!display_controller_->UpdateWorkAreaOfDisplayNearestWindow(
722          contains, insets)) {
723    return;
724  }
725  FOR_EACH_OBSERVER(ShellObserver, observers_,
726                    OnDisplayWorkAreaInsetsChanged());
727}
728
729void Shell::OnLoginStateChanged(user::LoginStatus status) {
730  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLoginStateChanged(status));
731}
732
733void Shell::UpdateAfterLoginStatusChange(user::LoginStatus status) {
734  RootWindowControllerList controllers = GetAllRootWindowControllers();
735  for (RootWindowControllerList::iterator iter = controllers.begin();
736       iter != controllers.end(); ++iter)
737    (*iter)->UpdateAfterLoginStatusChange(status);
738}
739
740void Shell::OnAppTerminating() {
741  FOR_EACH_OBSERVER(ShellObserver, observers_, OnAppTerminating());
742}
743
744void Shell::OnLockStateChanged(bool locked) {
745  FOR_EACH_OBSERVER(ShellObserver, observers_, OnLockStateChanged(locked));
746}
747
748void Shell::CreateLauncher() {
749  RootWindowControllerList controllers = GetAllRootWindowControllers();
750  for (RootWindowControllerList::iterator iter = controllers.begin();
751       iter != controllers.end(); ++iter)
752    (*iter)->shelf()->CreateLauncher();
753}
754
755void Shell::ShowLauncher() {
756  RootWindowControllerList controllers = GetAllRootWindowControllers();
757  for (RootWindowControllerList::iterator iter = controllers.begin();
758       iter != controllers.end(); ++iter)
759    (*iter)->ShowLauncher();
760}
761
762void Shell::AddShellObserver(ShellObserver* observer) {
763  observers_.AddObserver(observer);
764}
765
766void Shell::RemoveShellObserver(ShellObserver* observer) {
767  observers_.RemoveObserver(observer);
768}
769
770void Shell::UpdateShelfVisibility() {
771  RootWindowControllerList controllers = GetAllRootWindowControllers();
772  for (RootWindowControllerList::iterator iter = controllers.begin();
773       iter != controllers.end(); ++iter)
774    if ((*iter)->shelf())
775      (*iter)->UpdateShelfVisibility();
776}
777
778void Shell::SetShelfAutoHideBehavior(ShelfAutoHideBehavior behavior,
779                                     aura::RootWindow* root_window) {
780  ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
781      SetAutoHideBehavior(behavior);
782}
783
784ShelfAutoHideBehavior Shell::GetShelfAutoHideBehavior(
785    aura::RootWindow* root_window) const {
786  return ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
787      auto_hide_behavior();
788}
789
790void Shell::SetShelfAlignment(ShelfAlignment alignment,
791                              aura::RootWindow* root_window) {
792  if (ash::internal::ShelfLayoutManager::ForLauncher(root_window)->
793      SetAlignment(alignment)) {
794    FOR_EACH_OBSERVER(
795        ShellObserver, observers_, OnShelfAlignmentChanged(root_window));
796  }
797}
798
799ShelfAlignment Shell::GetShelfAlignment(aura::RootWindow* root_window) {
800  return GetRootWindowController(root_window)->
801      GetShelfLayoutManager()->GetAlignment();
802}
803
804void Shell::SetDimming(bool should_dim) {
805  RootWindowControllerList controllers = GetAllRootWindowControllers();
806  for (RootWindowControllerList::iterator iter = controllers.begin();
807       iter != controllers.end(); ++iter)
808    (*iter)->screen_dimmer()->SetDimming(should_dim);
809}
810
811void Shell::CreateModalBackground(aura::Window* window) {
812  if (!modality_filter_) {
813    modality_filter_.reset(new internal::SystemModalContainerEventFilter(this));
814    AddPreTargetHandler(modality_filter_.get());
815  }
816  RootWindowControllerList controllers = GetAllRootWindowControllers();
817  for (RootWindowControllerList::iterator iter = controllers.begin();
818       iter != controllers.end(); ++iter)
819    (*iter)->GetSystemModalLayoutManager(window)->CreateModalBackground();
820}
821
822void Shell::OnModalWindowRemoved(aura::Window* removed) {
823  RootWindowControllerList controllers = GetAllRootWindowControllers();
824  bool activated = false;
825  for (RootWindowControllerList::iterator iter = controllers.begin();
826       iter != controllers.end() && !activated; ++iter) {
827    activated = (*iter)->GetSystemModalLayoutManager(removed)->
828        ActivateNextModalWindow();
829  }
830  if (!activated) {
831    RemovePreTargetHandler(modality_filter_.get());
832    modality_filter_.reset();
833    for (RootWindowControllerList::iterator iter = controllers.begin();
834         iter != controllers.end(); ++iter)
835      (*iter)->GetSystemModalLayoutManager(removed)->DestroyModalBackground();
836  }
837}
838
839WebNotificationTray* Shell::GetWebNotificationTray() {
840  return GetPrimaryRootWindowController()->shelf()->
841      status_area_widget()->web_notification_tray();
842}
843
844bool Shell::HasPrimaryStatusArea() {
845  ShelfWidget* shelf = GetPrimaryRootWindowController()->shelf();
846  return shelf && shelf->status_area_widget();
847}
848
849SystemTray* Shell::GetPrimarySystemTray() {
850  return GetPrimaryRootWindowController()->GetSystemTray();
851}
852
853LauncherDelegate* Shell::GetLauncherDelegate() {
854  if (!launcher_delegate_) {
855    launcher_model_.reset(new LauncherModel);
856    launcher_delegate_.reset(
857        delegate_->CreateLauncherDelegate(launcher_model_.get()));
858  }
859  return launcher_delegate_.get();
860}
861
862void Shell::SetTouchHudProjectionEnabled(bool enabled) {
863  if (is_touch_hud_projection_enabled_ == enabled)
864    return;
865
866  is_touch_hud_projection_enabled_ = enabled;
867  FOR_EACH_OBSERVER(ShellObserver, observers_,
868                    OnTouchHudProjectionToggled(enabled));
869}
870
871void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
872  internal::RootWindowController* controller =
873      new internal::RootWindowController(root);
874  // Pass false for the |is_first_run_after_boot| parameter so we'll show a
875  // black background on this display instead of trying to mimic the boot splash
876  // screen.
877  InitRootWindowController(controller, false);
878
879  controller->root_window_layout()->OnWindowResized();
880  desktop_background_controller_->OnRootWindowAdded(root);
881  high_contrast_controller_->OnRootWindowAdded(root);
882  root->ShowRootWindow();
883  // Activate new root for testing.
884  // TODO(oshima): remove this.
885  target_root_window_ = root;
886
887  // Create a launcher if a user is already logged.
888  if (Shell::GetInstance()->session_state_delegate()->NumberOfLoggedInUsers())
889    controller->shelf()->CreateLauncher();
890}
891
892void Shell::DoInitialWorkspaceAnimation() {
893  return GetPrimaryRootWindowController()->workspace_controller()->
894      DoInitialAnimation();
895}
896
897void Shell::InitRootWindowController(
898    internal::RootWindowController* controller,
899    bool first_run_after_boot) {
900
901  aura::RootWindow* root_window = controller->root_window();
902  DCHECK(activation_client_);
903  DCHECK(visibility_controller_.get());
904  DCHECK(drag_drop_controller_.get());
905  DCHECK(capture_controller_.get());
906  DCHECK(window_cycle_controller_.get());
907
908  aura::client::SetFocusClient(root_window, focus_client_.get());
909  input_method_filter_->SetInputMethodPropertyInRootWindow(root_window);
910  aura::client::SetActivationClient(root_window, activation_client_);
911  if (views::corewm::UseFocusController()) {
912    views::corewm::FocusController* controller =
913        static_cast<views::corewm::FocusController*>(activation_client_);
914    root_window->AddPreTargetHandler(controller);
915  }
916  aura::client::SetVisibilityClient(root_window, visibility_controller_.get());
917  aura::client::SetDragDropClient(root_window, drag_drop_controller_.get());
918  aura::client::SetCaptureClient(root_window, capture_controller_.get());
919  aura::client::SetScreenPositionClient(root_window,
920                                        screen_position_controller_.get());
921  aura::client::SetCursorClient(root_window, &cursor_manager_);
922  aura::client::SetTooltipClient(root_window, tooltip_controller_.get());
923  aura::client::SetEventClient(root_window, event_client_.get());
924
925  if (nested_dispatcher_controller_) {
926    aura::client::SetDispatcherClient(root_window,
927                                      nested_dispatcher_controller_.get());
928  }
929  if (user_action_client_)
930    aura::client::SetUserActionClient(root_window, user_action_client_.get());
931
932  controller->Init(first_run_after_boot);
933
934  mru_window_tracker_->OnRootWindowAdded(root_window);
935}
936
937////////////////////////////////////////////////////////////////////////////////
938// Shell, private:
939
940bool Shell::CanWindowReceiveEvents(aura::Window* window) {
941  RootWindowControllerList controllers = GetAllRootWindowControllers();
942  for (RootWindowControllerList::iterator iter = controllers.begin();
943       iter != controllers.end(); ++iter) {
944    internal::SystemModalContainerLayoutManager* layout_manager =
945        (*iter)->GetSystemModalLayoutManager(window);
946    if (layout_manager && layout_manager->CanWindowReceiveEvents(window))
947      return true;
948  }
949  return false;
950}
951
952////////////////////////////////////////////////////////////////////////////////
953// Shell, ui::EventTarget overrides:
954
955bool Shell::CanAcceptEvent(const ui::Event& event) {
956  return true;
957}
958
959ui::EventTarget* Shell::GetParentTarget() {
960  return NULL;
961}
962
963void Shell::OnEvent(ui::Event* event) {
964}
965
966////////////////////////////////////////////////////////////////////////////////
967// Shell, aura::client::ActivationChangeObserver implementation:
968
969void Shell::OnWindowActivated(aura::Window* gained_active,
970                              aura::Window* lost_active) {
971  if (gained_active)
972    target_root_window_ = gained_active->GetRootWindow();
973}
974
975}  // namespace ash
976