ash/root_window_controller.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/root_window_controller.h"
   6
   7 #include <queue>
   8 #include <vector>
   9
  10 #include "ash/ash_constants.h"
  11 #include "ash/ash_switches.h"
  12 #include "ash/desktop_background/desktop_background_controller.h"
  13 #include "ash/desktop_background/desktop_background_widget_controller.h"
  14 #include "ash/desktop_background/user_wallpaper_delegate.h"
  15 #include "ash/display/display_manager.h"
  16 #include "ash/focus_cycler.h"
  17 #include "ash/high_contrast/high_contrast_controller.h"
  18 #include "ash/host/ash_window_tree_host.h"
  19 #include "ash/root_window_settings.h"
  20 #include "ash/session/session_state_delegate.h"
  21 #include "ash/shelf/shelf_layout_manager.h"
  22 #include "ash/shelf/shelf_types.h"
  23 #include "ash/shelf/shelf_widget.h"
  24 #include "ash/shell.h"
  25 #include "ash/shell_delegate.h"
  26 #include "ash/shell_factory.h"
  27 #include "ash/shell_window_ids.h"
  28 #include "ash/switchable_windows.h"
  29 #include "ash/system/status_area_widget.h"
  30 #include "ash/system/tray/system_tray_delegate.h"
  31 #include "ash/system/tray/system_tray_notifier.h"
  32 #include "ash/touch/touch_hud_debug.h"
  33 #include "ash/touch/touch_hud_projection.h"
  34 #include "ash/touch/touch_observer_hud.h"
  35 #include "ash/wm/always_on_top_controller.h"
  36 #include "ash/wm/dock/docked_window_layout_manager.h"
  37 #include "ash/wm/lock_layout_manager.h"
  38 #include "ash/wm/panels/attached_panel_window_targeter.h"
  39 #include "ash/wm/panels/panel_layout_manager.h"
  40 #include "ash/wm/panels/panel_window_event_handler.h"
  41 #include "ash/wm/root_window_layout_manager.h"
  42 #include "ash/wm/screen_dimmer.h"
  43 #include "ash/wm/stacking_controller.h"
  44 #include "ash/wm/status_area_layout_manager.h"
  45 #include "ash/wm/system_background_controller.h"
  46 #include "ash/wm/system_modal_container_layout_manager.h"
  47 #include "ash/wm/virtual_keyboard_container_layout_manager.h"
  48 #include "ash/wm/window_properties.h"
  49 #include "ash/wm/window_state.h"
  50 #include "ash/wm/window_util.h"
  51 #include "ash/wm/workspace/workspace_layout_manager.h"
  52 #include "ash/wm/workspace_controller.h"
  53 #include "base/command_line.h"
  54 #include "base/time/time.h"
  55 #include "ui/aura/client/aura_constants.h"
  56 #include "ui/aura/client/screen_position_client.h"
  57 #include "ui/aura/window.h"
  58 #include "ui/aura/window_delegate.h"
  59 #include "ui/aura/window_event_dispatcher.h"
  60 #include "ui/aura/window_observer.h"
  61 #include "ui/aura/window_tracker.h"
  62 #include "ui/base/hit_test.h"
  63 #include "ui/base/models/menu_model.h"
  64 #include "ui/gfx/display.h"
  65 #include "ui/gfx/screen.h"
  66 #include "ui/keyboard/keyboard_controller.h"
  67 #include "ui/keyboard/keyboard_util.h"
  68 #include "ui/views/controls/menu/menu_runner.h"
  69 #include "ui/views/view_model.h"
  70 #include "ui/views/view_model_utils.h"
  71 #include "ui/wm/core/capture_controller.h"
  72 #include "ui/wm/core/easy_resize_window_targeter.h"
  73 #include "ui/wm/core/visibility_controller.h"
  74 #include "ui/wm/core/window_util.h"
  75 #include "ui/wm/public/drag_drop_client.h"
  76 #include "ui/wm/public/tooltip_client.h"
  77 #include "ui/wm/public/window_types.h"
  78
  79 #if defined(OS_CHROMEOS)
  80 #include "ash/ash_touch_exploration_manager_chromeos.h"
  81 #include "ash/wm/boot_splash_screen_chromeos.h"
  82 #include "ui/chromeos/touch_exploration_controller.h"
  83 #endif
  84
  85 namespace ash {
  86 namespace {
  87
  88 #if defined(OS_CHROMEOS)
  89 // Duration for the animation that hides the boot splash screen, in
  90 // milliseconds.  This should be short enough in relation to
  91 // wm/window_animation.cc's brightness/grayscale fade animation that the login
  92 // background image animation isn't hidden by the splash screen animation.
  93 const int kBootSplashScreenHideDurationMs = 500;
  94 #endif
  95
  96 // Creates a new window for use as a container.
  97 aura::Window* CreateContainer(int window_id,
  98                               const char* name,
  99                               aura::Window* parent) {
 100   aura::Window* container = new aura::Window(NULL);
 101   container->set_id(window_id);
 102   container->SetName(name);
 103   container->Init(ui::LAYER_NOT_DRAWN);
 104   parent->AddChild(container);
 105   if (window_id != kShellWindowId_UnparentedControlContainer)
 106     container->Show();
 107   return container;
 108 }
 109
 110 float ToRelativeValue(int value, int src, int dst) {
 111   return static_cast<float>(value) / static_cast<float>(src) * dst;
 112 }
 113
 114 void MoveOriginRelativeToSize(const gfx::Size& src_size,
 115                                 const gfx::Size& dst_size,
 116                                 gfx::Rect* bounds_in_out) {
 117   gfx::Point origin = bounds_in_out->origin();
 118   bounds_in_out->set_origin(gfx::Point(
 119       ToRelativeValue(origin.x(), src_size.width(), dst_size.width()),
 120       ToRelativeValue(origin.y(), src_size.height(), dst_size.height())));
 121 }
 122
 123 // Reparents |window| to |new_parent|.
 124 void ReparentWindow(aura::Window* window, aura::Window* new_parent) {
 125   const gfx::Size src_size = window->parent()->bounds().size();
 126   const gfx::Size dst_size = new_parent->bounds().size();
 127   // Update the restore bounds to make it relative to the display.
 128   wm::WindowState* state = wm::GetWindowState(window);
 129   gfx::Rect restore_bounds;
 130   bool has_restore_bounds = state->HasRestoreBounds();
 131
 132   bool update_bounds = (state->IsNormalOrSnapped() || state->IsMinimized()) &&
 133                        new_parent->id() != kShellWindowId_DockedContainer;
 134   gfx::Rect local_bounds;
 135   if (update_bounds) {
 136     local_bounds = state->window()->bounds();
 137     MoveOriginRelativeToSize(src_size, dst_size, &local_bounds);
 138   }
 139
 140   if (has_restore_bounds) {
 141     restore_bounds = state->GetRestoreBoundsInParent();
 142     MoveOriginRelativeToSize(src_size, dst_size, &restore_bounds);
 143   }
 144
 145   new_parent->AddChild(window);
 146
 147   // Docked windows have bounds handled by the layout manager in AddChild().
 148   if (update_bounds)
 149     window->SetBounds(local_bounds);
 150
 151   if (has_restore_bounds)
 152     state->SetRestoreBoundsInParent(restore_bounds);
 153 }
 154
 155 // Reparents the appropriate set of windows from |src| to |dst|.
 156 void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
 157   // Set of windows to move.
 158   const int kContainerIdsToMove[] = {
 159       kShellWindowId_DefaultContainer,
 160       kShellWindowId_DockedContainer,
 161       kShellWindowId_PanelContainer,
 162       kShellWindowId_AlwaysOnTopContainer,
 163       kShellWindowId_SystemModalContainer,
 164       kShellWindowId_LockSystemModalContainer,
 165       kShellWindowId_UnparentedControlContainer,
 166       kShellWindowId_OverlayContainer, };
 167   for (size_t i = 0; i < arraysize(kContainerIdsToMove); i++) {
 168     int id = kContainerIdsToMove[i];
 169     aura::Window* src_container = Shell::GetContainer(src, id);
 170     aura::Window* dst_container = Shell::GetContainer(dst, id);
 171     while (!src_container->children().empty()) {
 172       // Restart iteration from the source container windows each time as they
 173       // may change as a result of moving other windows.
 174       aura::Window::Windows::const_iterator iter =
 175           src_container->children().begin();
 176       while (iter != src_container->children().end() &&
 177              SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
 178         ++iter;
 179       }
 180       // If the entire window list is modal background windows then stop.
 181       if (iter == src_container->children().end())
 182         break;
 183       ReparentWindow(*iter, dst_container);
 184     }
 185   }
 186 }
 187
 188 // Mark the container window so that a widget added to this container will
 189 // use the virtual screeen coordinates instead of parent.
 190 void SetUsesScreenCoordinates(aura::Window* container) {
 191   container->SetProperty(kUsesScreenCoordinatesKey, true);
 192 }
 193
 194 // Mark the container window so that a widget added to this container will
 195 // say in the same root window regardless of the bounds specified.
 196 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
 197   container->SetProperty(kStayInSameRootWindowKey, true);
 198 }
 199
 200 void SetUsesEasyResizeTargeter(aura::Window* container) {
 201   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 202                            -kResizeOutsideBoundsSize,
 203                            -kResizeOutsideBoundsSize,
 204                            -kResizeOutsideBoundsSize);
 205   gfx::Insets touch_extend = mouse_extend.Scale(
 206       kResizeOutsideBoundsScaleForTouch);
 207   container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 208       new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
 209                                          touch_extend)));
 210 }
 211
 212 // A window delegate which does nothing. Used to create a window that
 213 // is a event target, but do nothing.
 214 class EmptyWindowDelegate : public aura::WindowDelegate {
 215  public:
 216   EmptyWindowDelegate() {}
 217   ~EmptyWindowDelegate() override {}
 218
 219   // aura::WindowDelegate overrides:
 220   gfx::Size GetMinimumSize() const override { return gfx::Size(); }
 221   gfx::Size GetMaximumSize() const override { return gfx::Size(); }
 222   void OnBoundsChanged(const gfx::Rect& old_bounds,
 223                        const gfx::Rect& new_bounds) override {}
 224   ui::TextInputClient* GetFocusedTextInputClient() override { return nullptr; }
 225   gfx::NativeCursor GetCursor(const gfx::Point& point) override {
 226     return gfx::kNullCursor;
 227   }
 228   int GetNonClientComponent(const gfx::Point& point) const override {
 229     return HTNOWHERE;
 230   }
 231   bool ShouldDescendIntoChildForEventHandling(
 232       aura::Window* child,
 233       const gfx::Point& location) override {
 234     return false;
 235   }
 236   bool CanFocus() override { return false; }
 237   void OnCaptureLost() override {}
 238   void OnPaint(const ui::PaintContext& context) override {}
 239   void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
 240   void OnWindowDestroying(aura::Window* window) override {}
 241   void OnWindowDestroyed(aura::Window* window) override { delete this; }
 242   void OnWindowTargetVisibilityChanged(bool visible) override {}
 243   bool HasHitTestMask() const override { return false; }
 244   void GetHitTestMask(gfx::Path* mask) const override {}
 245
 246  private:
 247   DISALLOW_COPY_AND_ASSIGN(EmptyWindowDelegate);
 248 };
 249
 250 }  // namespace
 251
 252 void RootWindowController::CreateForPrimaryDisplay(AshWindowTreeHost* host) {
 253   RootWindowController* controller = new RootWindowController(host);
 254   controller->Init(RootWindowController::PRIMARY,
 255                    Shell::GetInstance()->delegate()->IsFirstRunAfterBoot());
 256 }
 257
 258 void RootWindowController::CreateForSecondaryDisplay(AshWindowTreeHost* host) {
 259   RootWindowController* controller = new RootWindowController(host);
 260   controller->Init(RootWindowController::SECONDARY, false /* first run */);
 261 }
 262
 263 // static
 264 RootWindowController* RootWindowController::ForShelf(
 265     const aura::Window* window) {
 266   CHECK(Shell::HasInstance());
 267   return GetRootWindowController(window->GetRootWindow());
 268 }
 269
 270 // static
 271 RootWindowController* RootWindowController::ForWindow(
 272     const aura::Window* window) {
 273   CHECK(Shell::HasInstance());
 274   return GetRootWindowController(window->GetRootWindow());
 275 }
 276
 277 // static
 278 RootWindowController* RootWindowController::ForTargetRootWindow() {
 279   CHECK(Shell::HasInstance());
 280   return GetRootWindowController(Shell::GetTargetRootWindow());
 281 }
 282
 283 // static
 284 aura::Window* RootWindowController::GetContainerForWindow(
 285     aura::Window* window) {
 286   aura::Window* container = window->parent();
 287   while (container && container->type() != ui::wm::WINDOW_TYPE_UNKNOWN)
 288     container = container->parent();
 289   return container;
 290 }
 291
 292 RootWindowController::~RootWindowController() {
 293   Shutdown();
 294   ash_host_.reset();
 295   // The CaptureClient needs to be around for as long as the RootWindow is
 296   // valid.
 297   capture_client_.reset();
 298 }
 299
 300 aura::WindowTreeHost* RootWindowController::GetHost() {
 301   return ash_host_->AsWindowTreeHost();
 302 }
 303
 304 const aura::WindowTreeHost* RootWindowController::GetHost() const {
 305   return ash_host_->AsWindowTreeHost();
 306 }
 307
 308 aura::Window* RootWindowController::GetRootWindow() {
 309   return GetHost()->window();
 310 }
 311
 312 const aura::Window* RootWindowController::GetRootWindow() const {
 313   return GetHost()->window();
 314 }
 315
 316 void RootWindowController::SetWallpaperController(
 317     DesktopBackgroundWidgetController* controller) {
 318   wallpaper_controller_.reset(controller);
 319 }
 320
 321 void RootWindowController::SetAnimatingWallpaperController(
 322     AnimatingDesktopController* controller) {
 323   if (animating_wallpaper_controller_.get())
 324     animating_wallpaper_controller_->StopAnimating();
 325   animating_wallpaper_controller_.reset(controller);
 326 }
 327
 328 void RootWindowController::Shutdown() {
 329   Shell* shell = Shell::GetInstance();
 330   shell->RemoveShellObserver(this);
 331
 332 #if defined(OS_CHROMEOS)
 333   if (touch_exploration_manager_) {
 334     touch_exploration_manager_.reset();
 335   }
 336 #endif
 337
 338   if (animating_wallpaper_controller_.get())
 339     animating_wallpaper_controller_->StopAnimating();
 340   wallpaper_controller_.reset();
 341   animating_wallpaper_controller_.reset();
 342   aura::Window* root_window = GetRootWindow();
 343   // Change the target root window before closing child windows. If any child
 344   // being removed triggers a relayout of the shelf it will try to build a
 345   // window list adding windows from the target root window's containers which
 346   // may have already gone away.
 347   if (Shell::GetTargetRootWindow() == root_window) {
 348     shell->set_target_root_window(
 349         Shell::GetPrimaryRootWindow() == root_window
 350             ? NULL
 351             : Shell::GetPrimaryRootWindow());
 352   }
 353
 354   CloseChildWindows();
 355   GetRootWindowSettings(root_window)->controller = NULL;
 356   screen_dimmer_.reset();
 357   workspace_controller_.reset();
 358   // Forget with the display ID so that display lookup
 359   // ends up with invalid display.
 360   GetRootWindowSettings(root_window)->display_id =
 361       gfx::Display::kInvalidDisplayID;
 362   ash_host_->PrepareForShutdown();
 363
 364   system_background_.reset();
 365   aura::client::SetScreenPositionClient(root_window, NULL);
 366 }
 367
 368 SystemModalContainerLayoutManager*
 369 RootWindowController::GetSystemModalLayoutManager(aura::Window* window) {
 370   aura::Window* modal_container = NULL;
 371   if (window) {
 372     aura::Window* window_container = GetContainerForWindow(window);
 373     if (window_container &&
 374         window_container->id() >= kShellWindowId_LockScreenContainer) {
 375       modal_container = GetContainer(kShellWindowId_LockSystemModalContainer);
 376     } else {
 377       modal_container = GetContainer(kShellWindowId_SystemModalContainer);
 378     }
 379   } else {
 380     int modal_window_id = Shell::GetInstance()->session_state_delegate()
 381         ->IsUserSessionBlocked() ? kShellWindowId_LockSystemModalContainer :
 382                                    kShellWindowId_SystemModalContainer;
 383     modal_container = GetContainer(modal_window_id);
 384   }
 385   return modal_container ? static_cast<SystemModalContainerLayoutManager*>(
 386       modal_container->layout_manager()) : NULL;
 387 }
 388
 389 aura::Window* RootWindowController::GetContainer(int container_id) {
 390   return GetRootWindow()->GetChildById(container_id);
 391 }
 392
 393 const aura::Window* RootWindowController::GetContainer(int container_id) const {
 394   return ash_host_->AsWindowTreeHost()->window()->GetChildById(container_id);
 395 }
 396
 397 void RootWindowController::ShowShelf() {
 398   if (!shelf_->shelf())
 399     return;
 400   shelf_->shelf()->SetVisible(true);
 401   shelf_->status_area_widget()->Show();
 402 }
 403
 404 void RootWindowController::OnShelfCreated() {
 405   if (panel_layout_manager_)
 406     panel_layout_manager_->SetShelf(shelf_->shelf());
 407   if (docked_layout_manager_) {
 408     docked_layout_manager_->SetShelf(shelf_->shelf());
 409     if (shelf_->shelf_layout_manager())
 410       docked_layout_manager_->AddObserver(shelf_->shelf_layout_manager());
 411   }
 412
 413   // Notify shell observers that the shelf has been created.
 414   Shell::GetInstance()->OnShelfCreatedForRootWindow(GetRootWindow());
 415 }
 416
 417 void RootWindowController::UpdateAfterLoginStatusChange(
 418     user::LoginStatus status) {
 419   if (status != user::LOGGED_IN_NONE)
 420     mouse_event_target_.reset();
 421   if (shelf_->status_area_widget())
 422     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 423 }
 424
 425 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
 426 #if defined(OS_CHROMEOS)
 427   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 428           switches::kAshAnimateFromBootSplashScreen) &&
 429       boot_splash_screen_.get()) {
 430     // Make the splash screen fade out so it doesn't obscure the desktop
 431     // wallpaper's brightness/grayscale animation.
 432     boot_splash_screen_->StartHideAnimation(
 433         base::TimeDelta::FromMilliseconds(kBootSplashScreenHideDurationMs));
 434   }
 435 #endif
 436 }
 437
 438 void RootWindowController::OnWallpaperAnimationFinished(views::Widget* widget) {
 439   // Make sure the wallpaper is visible.
 440   system_background_->SetColor(SK_ColorBLACK);
 441 #if defined(OS_CHROMEOS)
 442   boot_splash_screen_.reset();
 443 #endif
 444
 445   Shell::GetInstance()->user_wallpaper_delegate()->
 446       OnWallpaperAnimationFinished();
 447   // Only removes old component when wallpaper animation finished. If we
 448   // remove the old one before the new wallpaper is done fading in there will
 449   // be a white flash during the animation.
 450   if (animating_wallpaper_controller()) {
 451     DesktopBackgroundWidgetController* controller =
 452         animating_wallpaper_controller()->GetController(true);
 453     // |desktop_widget_| should be the same animating widget we try to move
 454     // to |kDesktopController|. Otherwise, we may close |desktop_widget_|
 455     // before move it to |kDesktopController|.
 456     DCHECK_EQ(controller->widget(), widget);
 457     // Release the old controller and close its background widget.
 458     SetWallpaperController(controller);
 459   }
 460 }
 461
 462 void RootWindowController::CloseChildWindows() {
 463   mouse_event_target_.reset();
 464
 465   // Remove observer as deactivating keyboard causes |docked_layout_manager_|
 466   // to fire notifications.
 467   if (docked_layout_manager_ && shelf_ && shelf_->shelf_layout_manager())
 468     docked_layout_manager_->RemoveObserver(shelf_->shelf_layout_manager());
 469
 470   // Deactivate keyboard container before closing child windows and shutting
 471   // down associated layout managers.
 472   DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
 473
 474   // panel_layout_manager_ needs to be shut down before windows are destroyed.
 475   if (panel_layout_manager_) {
 476     panel_layout_manager_->Shutdown();
 477     panel_layout_manager_ = NULL;
 478   }
 479   // docked_layout_manager_ needs to be shut down before windows are destroyed.
 480   if (docked_layout_manager_) {
 481     docked_layout_manager_->Shutdown();
 482     docked_layout_manager_ = NULL;
 483   }
 484   aura::Window* root_window = GetRootWindow();
 485   aura::client::SetDragDropClient(root_window, NULL);
 486
 487   // TODO(harrym): Remove when Status Area Widget is a child view.
 488   if (shelf_) {
 489     shelf_->ShutdownStatusAreaWidget();
 490
 491     if (shelf_->shelf_layout_manager())
 492       shelf_->shelf_layout_manager()->PrepareForShutdown();
 493   }
 494
 495   // Close background widget first as it depends on tooltip.
 496   wallpaper_controller_.reset();
 497   animating_wallpaper_controller_.reset();
 498
 499   workspace_controller_.reset();
 500   aura::client::SetTooltipClient(root_window, NULL);
 501
 502   // Explicitly destroy top level windows. We do this as during part of
 503   // destruction such windows may query the RootWindow for state.
 504   std::queue<aura::Window*> non_toplevel_windows;
 505   non_toplevel_windows.push(root_window);
 506   while (!non_toplevel_windows.empty()) {
 507     aura::Window* non_toplevel_window = non_toplevel_windows.front();
 508     non_toplevel_windows.pop();
 509     aura::WindowTracker toplevel_windows;
 510     for (size_t i = 0; i < non_toplevel_window->children().size(); ++i) {
 511       aura::Window* child = non_toplevel_window->children()[i];
 512       if (!child->owned_by_parent())
 513         continue;
 514       if (child->delegate())
 515         toplevel_windows.Add(child);
 516       else
 517         non_toplevel_windows.push(child);
 518     }
 519     while (!toplevel_windows.windows().empty())
 520       delete *toplevel_windows.windows().begin();
 521   }
 522   // And then remove the containers.
 523   while (!root_window->children().empty()) {
 524     aura::Window* window = root_window->children()[0];
 525     if (window->owned_by_parent()) {
 526       delete window;
 527     } else {
 528       root_window->RemoveChild(window);
 529     }
 530   }
 531
 532   shelf_.reset();
 533 }
 534
 535 void RootWindowController::MoveWindowsTo(aura::Window* dst) {
 536   // Forget the shelf early so that shelf don't update itself using wrong
 537   // display info.
 538   workspace_controller_->SetShelf(NULL);
 539   ReparentAllWindows(GetRootWindow(), dst);
 540 }
 541
 542 ShelfLayoutManager* RootWindowController::GetShelfLayoutManager() {
 543   return shelf_->shelf_layout_manager();
 544 }
 545
 546 SystemTray* RootWindowController::GetSystemTray() {
 547   // We assume in throughout the code that this will not return NULL. If code
 548   // triggers this for valid reasons, it should test status_area_widget first.
 549   CHECK(shelf_->status_area_widget());
 550   return shelf_->status_area_widget()->system_tray();
 551 }
 552
 553 void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
 554                                            ui::MenuSourceType source_type) {
 555   DCHECK(Shell::GetInstance()->delegate());
 556   scoped_ptr<ui::MenuModel> menu_model(
 557       Shell::GetInstance()->delegate()->CreateContextMenu(
 558           GetRootWindow(), NULL, NULL));
 559   if (!menu_model)
 560     return;
 561
 562   // Background controller may not be set yet if user clicked on status are
 563   // before initial animation completion. See crbug.com/222218
 564   if (!wallpaper_controller_.get())
 565     return;
 566
 567   views::MenuRunner menu_runner(menu_model.get(),
 568                                 views::MenuRunner::CONTEXT_MENU);
 569   if (menu_runner.RunMenuAt(wallpaper_controller_->widget(),
 570                             NULL,
 571                             gfx::Rect(location_in_screen, gfx::Size()),
 572                             views::MENU_ANCHOR_TOPLEFT,
 573                             source_type) == views::MenuRunner::MENU_DELETED) {
 574     return;
 575   }
 576
 577   Shell::GetInstance()->UpdateShelfVisibility();
 578 }
 579
 580 void RootWindowController::UpdateShelfVisibility() {
 581   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 582 }
 583
 584 const aura::Window* RootWindowController::GetWindowForFullscreenMode() const {
 585   const aura::Window* topmost_window = NULL;
 586   const aura::Window* active_window = wm::GetActiveWindow();
 587   if (active_window && active_window->GetRootWindow() == GetRootWindow() &&
 588       IsSwitchableContainer(active_window->parent())) {
 589     // Use the active window when it is on the current root window to determine
 590     // the fullscreen state to allow temporarily using a panel or docked window
 591     // (which are always above the default container) while a fullscreen
 592     // window is open. We only use the active window when in a switchable
 593     // container as the launcher should not exit fullscreen mode.
 594     topmost_window = active_window;
 595   } else {
 596     // Otherwise, use the topmost window on the root window's default container
 597     // when there is no active window on this root window.
 598     const aura::Window::Windows& windows =
 599         GetContainer(kShellWindowId_DefaultContainer)->children();
 600     for (aura::Window::Windows::const_reverse_iterator iter = windows.rbegin();
 601          iter != windows.rend(); ++iter) {
 602       if (((*iter)->type() == ui::wm::WINDOW_TYPE_NORMAL ||
 603            (*iter)->type() == ui::wm::WINDOW_TYPE_PANEL) &&
 604           (*iter)->layer()->GetTargetVisibility()) {
 605         topmost_window = *iter;
 606         break;
 607       }
 608     }
 609   }
 610   while (topmost_window) {
 611     if (wm::GetWindowState(topmost_window)->IsFullscreen())
 612       return topmost_window;
 613     topmost_window = ::wm::GetTransientParent(topmost_window);
 614   }
 615   return NULL;
 616 }
 617
 618 void RootWindowController::ActivateKeyboard(
 619     keyboard::KeyboardController* keyboard_controller) {
 620   if (!keyboard::IsKeyboardEnabled() ||
 621       GetContainer(kShellWindowId_VirtualKeyboardContainer)) {
 622     return;
 623   }
 624   DCHECK(keyboard_controller);
 625   keyboard_controller->AddObserver(shelf()->shelf_layout_manager());
 626   keyboard_controller->AddObserver(panel_layout_manager_);
 627   keyboard_controller->AddObserver(docked_layout_manager_);
 628   keyboard_controller->AddObserver(workspace_controller_->layout_manager());
 629   keyboard_controller->AddObserver(
 630       always_on_top_controller_->GetLayoutManager());
 631   Shell::GetInstance()->delegate()->VirtualKeyboardActivated(true);
 632   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 633   DCHECK(parent);
 634   aura::Window* keyboard_container =
 635       keyboard_controller->GetContainerWindow();
 636   keyboard_container->set_id(kShellWindowId_VirtualKeyboardContainer);
 637   parent->AddChild(keyboard_container);
 638   // TODO(oshima): Bounds of keyboard container should be handled by
 639   // RootWindowLayoutManager. Remove this after fixed RootWindowLayoutManager.
 640   keyboard_container->SetBounds(parent->bounds());
 641 }
 642
 643 void RootWindowController::DeactivateKeyboard(
 644     keyboard::KeyboardController* keyboard_controller) {
 645   if (!keyboard_controller ||
 646       !keyboard_controller->keyboard_container_initialized()) {
 647     return;
 648   }
 649   aura::Window* keyboard_container =
 650       keyboard_controller->GetContainerWindow();
 651   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
 652     aura::Window* parent =
 653         GetContainer(kShellWindowId_ImeWindowParentContainer);
 654     DCHECK(parent);
 655     parent->RemoveChild(keyboard_container);
 656     // Virtual keyboard may be deactivated while still showing, notify all
 657     // observers that keyboard bounds changed to 0 before remove them.
 658     keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
 659     keyboard_controller->RemoveObserver(shelf()->shelf_layout_manager());
 660     keyboard_controller->RemoveObserver(panel_layout_manager_);
 661     keyboard_controller->RemoveObserver(docked_layout_manager_);
 662     keyboard_controller->RemoveObserver(
 663         workspace_controller_->layout_manager());
 664     keyboard_controller->RemoveObserver(
 665         always_on_top_controller_->GetLayoutManager());
 666     Shell::GetInstance()->delegate()->VirtualKeyboardActivated(false);
 667   }
 668 }
 669
 670 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
 671   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 672   return parent ? parent->Contains(window) : false;
 673 }
 674
 675 ////////////////////////////////////////////////////////////////////////////////
 676 // RootWindowController, private:
 677
 678 RootWindowController::RootWindowController(AshWindowTreeHost* ash_host)
 679     : ash_host_(ash_host),
 680       root_window_layout_(NULL),
 681       docked_layout_manager_(NULL),
 682       panel_layout_manager_(NULL),
 683       touch_hud_debug_(NULL),
 684       touch_hud_projection_(NULL) {
 685   aura::Window* root_window = GetRootWindow();
 686   GetRootWindowSettings(root_window)->controller = this;
 687   screen_dimmer_.reset(new ScreenDimmer(root_window));
 688
 689   stacking_controller_.reset(new StackingController);
 690   aura::client::SetWindowTreeClient(root_window, stacking_controller_.get());
 691   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window));
 692 }
 693
 694 void RootWindowController::Init(RootWindowType root_window_type,
 695                                 bool first_run_after_boot) {
 696   aura::Window* root_window = GetRootWindow();
 697   Shell* shell = Shell::GetInstance();
 698   shell->InitRootWindow(root_window);
 699
 700   ash_host_->AsWindowTreeHost()->SetCursor(ui::kCursorPointer);
 701   CreateContainersInRootWindow(root_window);
 702
 703   CreateSystemBackground(first_run_after_boot);
 704
 705   InitLayoutManagers();
 706   InitTouchHuds();
 707
 708   if (Shell::GetPrimaryRootWindowController()->
 709       GetSystemModalLayoutManager(NULL)->has_modal_background()) {
 710     GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 711   }
 712
 713   shell->AddShellObserver(this);
 714
 715   if (root_window_type == PRIMARY) {
 716     root_window_layout()->OnWindowResized();
 717     shell->InitKeyboard();
 718   } else {
 719     root_window_layout()->OnWindowResized();
 720     ash_host_->AsWindowTreeHost()->Show();
 721
 722     // Create a shelf if a user is already logged in.
 723     if (shell->session_state_delegate()->NumberOfLoggedInUsers())
 724       shelf()->CreateShelf();
 725
 726     // Notify shell observers about new root window.
 727     shell->OnRootWindowAdded(root_window);
 728   }
 729
 730 #if defined(OS_CHROMEOS)
 731   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 732           switches::kAshDisableTouchExplorationMode)) {
 733     touch_exploration_manager_.reset(new AshTouchExplorationManager(this));
 734   }
 735 #endif
 736 }
 737
 738 void RootWindowController::InitLayoutManagers() {
 739   aura::Window* root_window = GetRootWindow();
 740   root_window_layout_ = new RootWindowLayoutManager(root_window);
 741   root_window->SetLayoutManager(root_window_layout_);
 742
 743   aura::Window* default_container =
 744       GetContainer(kShellWindowId_DefaultContainer);
 745   // Workspace manager has its own layout managers.
 746   workspace_controller_.reset(
 747       new WorkspaceController(default_container));
 748
 749   aura::Window* always_on_top_container =
 750       GetContainer(kShellWindowId_AlwaysOnTopContainer);
 751   always_on_top_controller_.reset(
 752       new AlwaysOnTopController(always_on_top_container));
 753
 754   DCHECK(!shelf_.get());
 755   aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
 756   // TODO(harrym): Remove when status area is view.
 757   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
 758   shelf_.reset(new ShelfWidget(
 759       shelf_container, status_container, workspace_controller()));
 760
 761   if (!Shell::GetInstance()->session_state_delegate()->
 762       IsActiveUserSessionStarted()) {
 763     // This window exists only to be a event target on login screen.
 764     // It does not have to handle events, nor be visible.
 765     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
 766     mouse_event_target_->Init(ui::LAYER_NOT_DRAWN);
 767
 768     aura::Window* lock_background_container =
 769         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
 770     lock_background_container->AddChild(mouse_event_target_.get());
 771     mouse_event_target_->Show();
 772   }
 773
 774   // Create Docked windows layout manager
 775   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
 776   docked_layout_manager_ =
 777       new DockedWindowLayoutManager(docked_container, workspace_controller());
 778   docked_container->SetLayoutManager(docked_layout_manager_);
 779
 780   // Installs SnapLayoutManager to containers who set the
 781   // |kSnapsChildrenToPhysicalPixelBoundary| property.
 782   wm::InstallSnapLayoutManagerToContainers(root_window);
 783
 784   // Create Panel layout manager
 785   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
 786   panel_layout_manager_ = new PanelLayoutManager(panel_container);
 787   panel_container->SetLayoutManager(panel_layout_manager_);
 788   panel_container_handler_.reset(new PanelWindowEventHandler);
 789   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 790
 791   // Install an AttachedPanelWindowTargeter on the panel container to make it
 792   // easier to correctly target shelf buttons with touch.
 793   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 794                            -kResizeOutsideBoundsSize,
 795                            -kResizeOutsideBoundsSize,
 796                            -kResizeOutsideBoundsSize);
 797   gfx::Insets touch_extend = mouse_extend.Scale(
 798       kResizeOutsideBoundsScaleForTouch);
 799   panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 800       new AttachedPanelWindowTargeter(panel_container,
 801                                       mouse_extend,
 802                                       touch_extend,
 803                                       panel_layout_manager_)));
 804 }
 805
 806 void RootWindowController::InitTouchHuds() {
 807   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 808   if (command_line->HasSwitch(switches::kAshTouchHud))
 809     set_touch_hud_debug(new TouchHudDebug(GetRootWindow()));
 810   if (Shell::GetInstance()->is_touch_hud_projection_enabled())
 811     EnableTouchHudProjection();
 812 }
 813
 814 void RootWindowController::CreateSystemBackground(
 815     bool is_first_run_after_boot) {
 816   SkColor color = SK_ColorBLACK;
 817 #if defined(OS_CHROMEOS)
 818   if (is_first_run_after_boot)
 819     color = kChromeOsBootColor;
 820 #endif
 821   system_background_.reset(
 822       new SystemBackgroundController(GetRootWindow(), color));
 823
 824 #if defined(OS_CHROMEOS)
 825   // Make a copy of the system's boot splash screen so we can composite it
 826   // onscreen until the desktop background is ready.
 827   if (is_first_run_after_boot &&
 828       (base::CommandLine::ForCurrentProcess()->HasSwitch(
 829            switches::kAshCopyHostBackgroundAtBoot) ||
 830        base::CommandLine::ForCurrentProcess()->HasSwitch(
 831            switches::kAshAnimateFromBootSplashScreen)))
 832     boot_splash_screen_.reset(new BootSplashScreen(GetHost()));
 833 #endif
 834 }
 835
 836 void RootWindowController::CreateContainersInRootWindow(
 837     aura::Window* root_window) {
 838   // These containers are just used by PowerButtonController to animate groups
 839   // of containers simultaneously without messing up the current transformations
 840   // on those containers. These are direct children of the root window; all of
 841   // the other containers are their children.
 842
 843   // The desktop background container is not part of the lock animation, so it
 844   // is not included in those animate groups.
 845   // When screen is locked desktop background is moved to lock screen background
 846   // container (moved back on unlock). We want to make sure that there's an
 847   // opaque layer occluding the non-lock-screen layers.
 848   aura::Window* desktop_background_container = CreateContainer(
 849       kShellWindowId_DesktopBackgroundContainer,
 850       "DesktopBackgroundContainer",
 851       root_window);
 852   ::wm::SetChildWindowVisibilityChangesAnimated(desktop_background_container);
 853
 854   aura::Window* non_lock_screen_containers = CreateContainer(
 855       kShellWindowId_NonLockScreenContainersContainer,
 856       "NonLockScreenContainersContainer",
 857       root_window);
 858
 859   aura::Window* lock_background_containers = CreateContainer(
 860       kShellWindowId_LockScreenBackgroundContainer,
 861       "LockScreenBackgroundContainer",
 862       root_window);
 863   ::wm::SetChildWindowVisibilityChangesAnimated(lock_background_containers);
 864
 865   aura::Window* lock_screen_containers = CreateContainer(
 866       kShellWindowId_LockScreenContainersContainer,
 867       "LockScreenContainersContainer",
 868       root_window);
 869   aura::Window* lock_screen_related_containers = CreateContainer(
 870       kShellWindowId_LockScreenRelatedContainersContainer,
 871       "LockScreenRelatedContainersContainer",
 872       root_window);
 873
 874   CreateContainer(kShellWindowId_UnparentedControlContainer,
 875                   "UnparentedControlContainer",
 876                   non_lock_screen_containers);
 877
 878   aura::Window* default_container = CreateContainer(
 879       kShellWindowId_DefaultContainer,
 880       "DefaultContainer",
 881       non_lock_screen_containers);
 882   ::wm::SetChildWindowVisibilityChangesAnimated(default_container);
 883   wm::SetSnapsChildrenToPhysicalPixelBoundary(default_container);
 884   SetUsesScreenCoordinates(default_container);
 885   SetUsesEasyResizeTargeter(default_container);
 886
 887   aura::Window* always_on_top_container = CreateContainer(
 888       kShellWindowId_AlwaysOnTopContainer,
 889       "AlwaysOnTopContainer",
 890       non_lock_screen_containers);
 891   ::wm::SetChildWindowVisibilityChangesAnimated(always_on_top_container);
 892   wm::SetSnapsChildrenToPhysicalPixelBoundary(always_on_top_container);
 893   SetUsesScreenCoordinates(always_on_top_container);
 894
 895   aura::Window* docked_container = CreateContainer(
 896       kShellWindowId_DockedContainer,
 897       "DockedContainer",
 898       non_lock_screen_containers);
 899   ::wm::SetChildWindowVisibilityChangesAnimated(docked_container);
 900   wm::SetSnapsChildrenToPhysicalPixelBoundary(docked_container);
 901   SetUsesScreenCoordinates(docked_container);
 902   SetUsesEasyResizeTargeter(docked_container);
 903
 904   aura::Window* shelf_container =
 905       CreateContainer(kShellWindowId_ShelfContainer,
 906                       "ShelfContainer",
 907                       non_lock_screen_containers);
 908   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_container);
 909   SetUsesScreenCoordinates(shelf_container);
 910   DescendantShouldStayInSameRootWindow(shelf_container);
 911
 912   aura::Window* panel_container = CreateContainer(
 913       kShellWindowId_PanelContainer,
 914       "PanelContainer",
 915       non_lock_screen_containers);
 916   wm::SetSnapsChildrenToPhysicalPixelBoundary(panel_container);
 917   SetUsesScreenCoordinates(panel_container);
 918
 919   aura::Window* shelf_bubble_container =
 920       CreateContainer(kShellWindowId_ShelfBubbleContainer,
 921                       "ShelfBubbleContainer",
 922                       non_lock_screen_containers);
 923   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_bubble_container);
 924   SetUsesScreenCoordinates(shelf_bubble_container);
 925   DescendantShouldStayInSameRootWindow(shelf_bubble_container);
 926
 927   aura::Window* app_list_container =
 928       CreateContainer(kShellWindowId_AppListContainer,
 929                       "AppListContainer",
 930                       non_lock_screen_containers);
 931   wm::SetSnapsChildrenToPhysicalPixelBoundary(app_list_container);
 932   SetUsesScreenCoordinates(app_list_container);
 933
 934   aura::Window* modal_container = CreateContainer(
 935       kShellWindowId_SystemModalContainer,
 936       "SystemModalContainer",
 937       non_lock_screen_containers);
 938   wm::SetSnapsChildrenToPhysicalPixelBoundary(modal_container);
 939   modal_container->SetLayoutManager(
 940       new SystemModalContainerLayoutManager(modal_container));
 941   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
 942   SetUsesScreenCoordinates(modal_container);
 943   SetUsesEasyResizeTargeter(modal_container);
 944
 945   // TODO(beng): Figure out if we can make this use
 946   // SystemModalContainerEventFilter instead of stops_event_propagation.
 947   aura::Window* lock_container = CreateContainer(
 948       kShellWindowId_LockScreenContainer,
 949       "LockScreenContainer",
 950       lock_screen_containers);
 951   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_container);
 952   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 953           switches::kAshDisableLockLayoutManager)) {
 954     lock_container->SetLayoutManager(
 955             new WorkspaceLayoutManager(lock_container));
 956   } else {
 957     lock_container->SetLayoutManager(new LockLayoutManager(lock_container));
 958   }
 959   SetUsesScreenCoordinates(lock_container);
 960   // TODO(beng): stopsevents
 961
 962   aura::Window* lock_modal_container = CreateContainer(
 963       kShellWindowId_LockSystemModalContainer,
 964       "LockSystemModalContainer",
 965       lock_screen_containers);
 966   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_modal_container);
 967   lock_modal_container->SetLayoutManager(
 968       new SystemModalContainerLayoutManager(lock_modal_container));
 969   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
 970   SetUsesScreenCoordinates(lock_modal_container);
 971   SetUsesEasyResizeTargeter(lock_modal_container);
 972
 973   aura::Window* status_container =
 974       CreateContainer(kShellWindowId_StatusContainer,
 975                       "StatusContainer",
 976                       lock_screen_related_containers);
 977   wm::SetSnapsChildrenToPhysicalPixelBoundary(status_container);
 978   SetUsesScreenCoordinates(status_container);
 979   DescendantShouldStayInSameRootWindow(status_container);
 980
 981   aura::Window* settings_bubble_container = CreateContainer(
 982       kShellWindowId_SettingBubbleContainer,
 983       "SettingBubbleContainer",
 984       lock_screen_related_containers);
 985   ::wm::SetChildWindowVisibilityChangesAnimated(settings_bubble_container);
 986   wm::SetSnapsChildrenToPhysicalPixelBoundary(settings_bubble_container);
 987   SetUsesScreenCoordinates(settings_bubble_container);
 988   DescendantShouldStayInSameRootWindow(settings_bubble_container);
 989
 990   aura::Window* virtual_keyboard_parent_container =
 991       CreateContainer(kShellWindowId_ImeWindowParentContainer,
 992                       "VirtualKeyboardParentContainer",
 993                       lock_screen_related_containers);
 994   wm::SetSnapsChildrenToPhysicalPixelBoundary(
 995       virtual_keyboard_parent_container);
 996   virtual_keyboard_parent_container->SetLayoutManager(
 997       new VirtualKeyboardContainerLayoutManager(
 998           virtual_keyboard_parent_container));
 999   SetUsesScreenCoordinates(virtual_keyboard_parent_container);
1000
1001   aura::Window* menu_container = CreateContainer(
1002       kShellWindowId_MenuContainer,
1003       "MenuContainer",
1004       lock_screen_related_containers);
1005   ::wm::SetChildWindowVisibilityChangesAnimated(menu_container);
1006   wm::SetSnapsChildrenToPhysicalPixelBoundary(menu_container);
1007   SetUsesScreenCoordinates(menu_container);
1008
1009   aura::Window* drag_drop_container = CreateContainer(
1010       kShellWindowId_DragImageAndTooltipContainer,
1011       "DragImageAndTooltipContainer",
1012       lock_screen_related_containers);
1013   ::wm::SetChildWindowVisibilityChangesAnimated(drag_drop_container);
1014   wm::SetSnapsChildrenToPhysicalPixelBoundary(drag_drop_container);
1015   SetUsesScreenCoordinates(drag_drop_container);
1016
1017   aura::Window* overlay_container = CreateContainer(
1018       kShellWindowId_OverlayContainer,
1019       "OverlayContainer",
1020       lock_screen_related_containers);
1021   wm::SetSnapsChildrenToPhysicalPixelBoundary(overlay_container);
1022   SetUsesScreenCoordinates(overlay_container);
1023
1024 #if defined(OS_CHROMEOS)
1025   aura::Window* mouse_cursor_container = CreateContainer(
1026       kShellWindowId_MouseCursorContainer,
1027       "MouseCursorContainer",
1028       root_window);
1029   SetUsesScreenCoordinates(mouse_cursor_container);
1030 #endif
1031
1032   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
1033                   "PowerButtonAnimationContainer", root_window);
1034 }
1035
1036 void RootWindowController::EnableTouchHudProjection() {
1037   if (touch_hud_projection_)
1038     return;
1039   set_touch_hud_projection(new TouchHudProjection(GetRootWindow()));
1040 }
1041
1042 void RootWindowController::DisableTouchHudProjection() {
1043   if (!touch_hud_projection_)
1044     return;
1045   touch_hud_projection_->Remove();
1046 }
1047
1048 void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
1049   shelf_->shelf_layout_manager()->UpdateVisibilityState();
1050 }
1051
1052 void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
1053   if (enabled)
1054     EnableTouchHudProjection();
1055   else
1056     DisableTouchHudProjection();
1057 }
1058
1059 RootWindowController* GetRootWindowController(
1060     const aura::Window* root_window) {
1061   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
1062 }
1063
1064 }  // namespace ash