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(aura::WINDOW_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   for (size_t i = 0; i < arraysize(kContainerIdsToMove); i++) {
 167     int id = kContainerIdsToMove[i];
 168     aura::Window* src_container = Shell::GetContainer(src, id);
 169     aura::Window* dst_container = Shell::GetContainer(dst, id);
 170     while (!src_container->children().empty()) {
 171       // Restart iteration from the source container windows each time as they
 172       // may change as a result of moving other windows.
 173       aura::Window::Windows::const_iterator iter =
 174           src_container->children().begin();
 175       while (iter != src_container->children().end() &&
 176              SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
 177         ++iter;
 178       }
 179       // If the entire window list is modal background windows then stop.
 180       if (iter == src_container->children().end())
 181         break;
 182       ReparentWindow(*iter, dst_container);
 183     }
 184   }
 185 }
 186
 187 // Mark the container window so that a widget added to this container will
 188 // use the virtual screeen coordinates instead of parent.
 189 void SetUsesScreenCoordinates(aura::Window* container) {
 190   container->SetProperty(kUsesScreenCoordinatesKey, true);
 191 }
 192
 193 // Mark the container window so that a widget added to this container will
 194 // say in the same root window regardless of the bounds specified.
 195 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
 196   container->SetProperty(kStayInSameRootWindowKey, true);
 197 }
 198
 199 void SetUsesEasyResizeTargeter(aura::Window* container) {
 200   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 201                            -kResizeOutsideBoundsSize,
 202                            -kResizeOutsideBoundsSize,
 203                            -kResizeOutsideBoundsSize);
 204   gfx::Insets touch_extend = mouse_extend.Scale(
 205       kResizeOutsideBoundsScaleForTouch);
 206   container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 207       new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
 208                                          touch_extend)));
 209 }
 210
 211 // A window delegate which does nothing. Used to create a window that
 212 // is a event target, but do nothing.
 213 class EmptyWindowDelegate : public aura::WindowDelegate {
 214  public:
 215   EmptyWindowDelegate() {}
 216   virtual ~EmptyWindowDelegate() {}
 217
 218   // aura::WindowDelegate overrides:
 219   virtual gfx::Size GetMinimumSize() const override {
 220     return gfx::Size();
 221   }
 222   virtual gfx::Size GetMaximumSize() const override {
 223     return gfx::Size();
 224   }
 225   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
 226                                const gfx::Rect& new_bounds) override {
 227   }
 228   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) override {
 229     return gfx::kNullCursor;
 230   }
 231   virtual int GetNonClientComponent(
 232       const gfx::Point& point) const override {
 233     return HTNOWHERE;
 234   }
 235   virtual bool ShouldDescendIntoChildForEventHandling(
 236       aura::Window* child,
 237       const gfx::Point& location) override {
 238     return false;
 239   }
 240   virtual bool CanFocus() override {
 241     return false;
 242   }
 243   virtual void OnCaptureLost() override {
 244   }
 245   virtual void OnPaint(gfx::Canvas* canvas) override {
 246   }
 247   virtual void OnDeviceScaleFactorChanged(
 248       float device_scale_factor) override {
 249   }
 250   virtual void OnWindowDestroying(aura::Window* window) override {}
 251   virtual void OnWindowDestroyed(aura::Window* window) override {
 252     delete this;
 253   }
 254   virtual void OnWindowTargetVisibilityChanged(bool visible) override {
 255   }
 256   virtual bool HasHitTestMask() const override {
 257     return false;
 258   }
 259   virtual void GetHitTestMask(gfx::Path* mask) const override {}
 260
 261  private:
 262   DISALLOW_COPY_AND_ASSIGN(EmptyWindowDelegate);
 263 };
 264
 265 }  // namespace
 266
 267 void RootWindowController::CreateForPrimaryDisplay(AshWindowTreeHost* host) {
 268   RootWindowController* controller = new RootWindowController(host);
 269   controller->Init(RootWindowController::PRIMARY,
 270                    Shell::GetInstance()->delegate()->IsFirstRunAfterBoot());
 271 }
 272
 273 void RootWindowController::CreateForSecondaryDisplay(AshWindowTreeHost* host) {
 274   RootWindowController* controller = new RootWindowController(host);
 275   controller->Init(RootWindowController::SECONDARY, false /* first run */);
 276 }
 277
 278 // static
 279 RootWindowController* RootWindowController::ForShelf(
 280     const aura::Window* window) {
 281   CHECK(Shell::HasInstance());
 282   return GetRootWindowController(window->GetRootWindow());
 283 }
 284
 285 // static
 286 RootWindowController* RootWindowController::ForWindow(
 287     const aura::Window* window) {
 288   CHECK(Shell::HasInstance());
 289   return GetRootWindowController(window->GetRootWindow());
 290 }
 291
 292 // static
 293 RootWindowController* RootWindowController::ForTargetRootWindow() {
 294   CHECK(Shell::HasInstance());
 295   return GetRootWindowController(Shell::GetTargetRootWindow());
 296 }
 297
 298 // static
 299 aura::Window* RootWindowController::GetContainerForWindow(
 300     aura::Window* window) {
 301   aura::Window* container = window->parent();
 302   while (container && container->type() != ui::wm::WINDOW_TYPE_UNKNOWN)
 303     container = container->parent();
 304   return container;
 305 }
 306
 307 RootWindowController::~RootWindowController() {
 308   Shutdown();
 309   ash_host_.reset();
 310   // The CaptureClient needs to be around for as long as the RootWindow is
 311   // valid.
 312   capture_client_.reset();
 313 }
 314
 315 aura::WindowTreeHost* RootWindowController::GetHost() {
 316   return ash_host_->AsWindowTreeHost();
 317 }
 318
 319 const aura::WindowTreeHost* RootWindowController::GetHost() const {
 320   return ash_host_->AsWindowTreeHost();
 321 }
 322
 323 aura::Window* RootWindowController::GetRootWindow() {
 324   return GetHost()->window();
 325 }
 326
 327 const aura::Window* RootWindowController::GetRootWindow() const {
 328   return GetHost()->window();
 329 }
 330
 331 void RootWindowController::SetWallpaperController(
 332     DesktopBackgroundWidgetController* controller) {
 333   wallpaper_controller_.reset(controller);
 334 }
 335
 336 void RootWindowController::SetAnimatingWallpaperController(
 337     AnimatingDesktopController* controller) {
 338   if (animating_wallpaper_controller_.get())
 339     animating_wallpaper_controller_->StopAnimating();
 340   animating_wallpaper_controller_.reset(controller);
 341 }
 342
 343 void RootWindowController::Shutdown() {
 344   Shell* shell = Shell::GetInstance();
 345   shell->RemoveShellObserver(this);
 346
 347 #if defined(OS_CHROMEOS)
 348   if (touch_exploration_manager_) {
 349     touch_exploration_manager_.reset();
 350   }
 351 #endif
 352
 353   if (animating_wallpaper_controller_.get())
 354     animating_wallpaper_controller_->StopAnimating();
 355   wallpaper_controller_.reset();
 356   animating_wallpaper_controller_.reset();
 357   aura::Window* root_window = GetRootWindow();
 358   // Change the target root window before closing child windows. If any child
 359   // being removed triggers a relayout of the shelf it will try to build a
 360   // window list adding windows from the target root window's containers which
 361   // may have already gone away.
 362   if (Shell::GetTargetRootWindow() == root_window) {
 363     shell->set_target_root_window(
 364         Shell::GetPrimaryRootWindow() == root_window
 365             ? NULL
 366             : Shell::GetPrimaryRootWindow());
 367   }
 368
 369   CloseChildWindows();
 370   GetRootWindowSettings(root_window)->controller = NULL;
 371   screen_dimmer_.reset();
 372   workspace_controller_.reset();
 373   // Forget with the display ID so that display lookup
 374   // ends up with invalid display.
 375   GetRootWindowSettings(root_window)->display_id =
 376       gfx::Display::kInvalidDisplayID;
 377   ash_host_->PrepareForShutdown();
 378
 379   system_background_.reset();
 380   aura::client::SetScreenPositionClient(root_window, NULL);
 381 }
 382
 383 SystemModalContainerLayoutManager*
 384 RootWindowController::GetSystemModalLayoutManager(aura::Window* window) {
 385   aura::Window* modal_container = NULL;
 386   if (window) {
 387     aura::Window* window_container = GetContainerForWindow(window);
 388     if (window_container &&
 389         window_container->id() >= kShellWindowId_LockScreenContainer) {
 390       modal_container = GetContainer(kShellWindowId_LockSystemModalContainer);
 391     } else {
 392       modal_container = GetContainer(kShellWindowId_SystemModalContainer);
 393     }
 394   } else {
 395     int modal_window_id = Shell::GetInstance()->session_state_delegate()
 396         ->IsUserSessionBlocked() ? kShellWindowId_LockSystemModalContainer :
 397                                    kShellWindowId_SystemModalContainer;
 398     modal_container = GetContainer(modal_window_id);
 399   }
 400   return modal_container ? static_cast<SystemModalContainerLayoutManager*>(
 401       modal_container->layout_manager()) : NULL;
 402 }
 403
 404 aura::Window* RootWindowController::GetContainer(int container_id) {
 405   return GetRootWindow()->GetChildById(container_id);
 406 }
 407
 408 const aura::Window* RootWindowController::GetContainer(int container_id) const {
 409   return ash_host_->AsWindowTreeHost()->window()->GetChildById(container_id);
 410 }
 411
 412 void RootWindowController::ShowShelf() {
 413   if (!shelf_->shelf())
 414     return;
 415   shelf_->shelf()->SetVisible(true);
 416   shelf_->status_area_widget()->Show();
 417 }
 418
 419 void RootWindowController::OnShelfCreated() {
 420   if (panel_layout_manager_)
 421     panel_layout_manager_->SetShelf(shelf_->shelf());
 422   if (docked_layout_manager_) {
 423     docked_layout_manager_->SetShelf(shelf_->shelf());
 424     if (shelf_->shelf_layout_manager())
 425       docked_layout_manager_->AddObserver(shelf_->shelf_layout_manager());
 426   }
 427
 428   // Notify shell observers that the shelf has been created.
 429   Shell::GetInstance()->OnShelfCreatedForRootWindow(GetRootWindow());
 430 }
 431
 432 void RootWindowController::UpdateAfterLoginStatusChange(
 433     user::LoginStatus status) {
 434   if (status != user::LOGGED_IN_NONE)
 435     mouse_event_target_.reset();
 436   if (shelf_->status_area_widget())
 437     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 438 }
 439
 440 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
 441 #if defined(OS_CHROMEOS)
 442   if (CommandLine::ForCurrentProcess()->HasSwitch(
 443           switches::kAshAnimateFromBootSplashScreen) &&
 444       boot_splash_screen_.get()) {
 445     // Make the splash screen fade out so it doesn't obscure the desktop
 446     // wallpaper's brightness/grayscale animation.
 447     boot_splash_screen_->StartHideAnimation(
 448         base::TimeDelta::FromMilliseconds(kBootSplashScreenHideDurationMs));
 449   }
 450 #endif
 451 }
 452
 453 void RootWindowController::OnWallpaperAnimationFinished(views::Widget* widget) {
 454   // Make sure the wallpaper is visible.
 455   system_background_->SetColor(SK_ColorBLACK);
 456 #if defined(OS_CHROMEOS)
 457   boot_splash_screen_.reset();
 458 #endif
 459
 460   Shell::GetInstance()->user_wallpaper_delegate()->
 461       OnWallpaperAnimationFinished();
 462   // Only removes old component when wallpaper animation finished. If we
 463   // remove the old one before the new wallpaper is done fading in there will
 464   // be a white flash during the animation.
 465   if (animating_wallpaper_controller()) {
 466     DesktopBackgroundWidgetController* controller =
 467         animating_wallpaper_controller()->GetController(true);
 468     // |desktop_widget_| should be the same animating widget we try to move
 469     // to |kDesktopController|. Otherwise, we may close |desktop_widget_|
 470     // before move it to |kDesktopController|.
 471     DCHECK_EQ(controller->widget(), widget);
 472     // Release the old controller and close its background widget.
 473     SetWallpaperController(controller);
 474   }
 475 }
 476
 477 void RootWindowController::CloseChildWindows() {
 478   mouse_event_target_.reset();
 479
 480   // Remove observer as deactivating keyboard causes |docked_layout_manager_|
 481   // to fire notifications.
 482   if (docked_layout_manager_ && shelf_ && shelf_->shelf_layout_manager())
 483     docked_layout_manager_->RemoveObserver(shelf_->shelf_layout_manager());
 484
 485   // Deactivate keyboard container before closing child windows and shutting
 486   // down associated layout managers.
 487   DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
 488
 489   // panel_layout_manager_ needs to be shut down before windows are destroyed.
 490   if (panel_layout_manager_) {
 491     panel_layout_manager_->Shutdown();
 492     panel_layout_manager_ = NULL;
 493   }
 494   // docked_layout_manager_ needs to be shut down before windows are destroyed.
 495   if (docked_layout_manager_) {
 496     docked_layout_manager_->Shutdown();
 497     docked_layout_manager_ = NULL;
 498   }
 499   aura::Window* root_window = GetRootWindow();
 500   aura::client::SetDragDropClient(root_window, NULL);
 501
 502   // TODO(harrym): Remove when Status Area Widget is a child view.
 503   if (shelf_) {
 504     shelf_->ShutdownStatusAreaWidget();
 505
 506     if (shelf_->shelf_layout_manager())
 507       shelf_->shelf_layout_manager()->PrepareForShutdown();
 508   }
 509
 510   // Close background widget first as it depends on tooltip.
 511   wallpaper_controller_.reset();
 512   animating_wallpaper_controller_.reset();
 513
 514   workspace_controller_.reset();
 515   aura::client::SetTooltipClient(root_window, NULL);
 516
 517   // Explicitly destroy top level windows. We do this as during part of
 518   // destruction such windows may query the RootWindow for state.
 519   std::queue<aura::Window*> non_toplevel_windows;
 520   non_toplevel_windows.push(root_window);
 521   while (!non_toplevel_windows.empty()) {
 522     aura::Window* non_toplevel_window = non_toplevel_windows.front();
 523     non_toplevel_windows.pop();
 524     aura::WindowTracker toplevel_windows;
 525     for (size_t i = 0; i < non_toplevel_window->children().size(); ++i) {
 526       aura::Window* child = non_toplevel_window->children()[i];
 527       if (!child->owned_by_parent())
 528         continue;
 529       if (child->delegate())
 530         toplevel_windows.Add(child);
 531       else
 532         non_toplevel_windows.push(child);
 533     }
 534     while (!toplevel_windows.windows().empty())
 535       delete *toplevel_windows.windows().begin();
 536   }
 537   // And then remove the containers.
 538   while (!root_window->children().empty()) {
 539     aura::Window* window = root_window->children()[0];
 540     if (window->owned_by_parent()) {
 541       delete window;
 542     } else {
 543       root_window->RemoveChild(window);
 544     }
 545   }
 546
 547   shelf_.reset();
 548 }
 549
 550 void RootWindowController::MoveWindowsTo(aura::Window* dst) {
 551   // Forget the shelf early so that shelf don't update itself using wrong
 552   // display info.
 553   workspace_controller_->SetShelf(NULL);
 554   ReparentAllWindows(GetRootWindow(), dst);
 555 }
 556
 557 ShelfLayoutManager* RootWindowController::GetShelfLayoutManager() {
 558   return shelf_->shelf_layout_manager();
 559 }
 560
 561 SystemTray* RootWindowController::GetSystemTray() {
 562   // We assume in throughout the code that this will not return NULL. If code
 563   // triggers this for valid reasons, it should test status_area_widget first.
 564   CHECK(shelf_->status_area_widget());
 565   return shelf_->status_area_widget()->system_tray();
 566 }
 567
 568 void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
 569                                            ui::MenuSourceType source_type) {
 570   DCHECK(Shell::GetInstance()->delegate());
 571   scoped_ptr<ui::MenuModel> menu_model(
 572       Shell::GetInstance()->delegate()->CreateContextMenu(
 573           GetRootWindow(), NULL, NULL));
 574   if (!menu_model)
 575     return;
 576
 577   // Background controller may not be set yet if user clicked on status are
 578   // before initial animation completion. See crbug.com/222218
 579   if (!wallpaper_controller_.get())
 580     return;
 581
 582   views::MenuRunner menu_runner(menu_model.get(),
 583                                 views::MenuRunner::CONTEXT_MENU);
 584   if (menu_runner.RunMenuAt(wallpaper_controller_->widget(),
 585                             NULL,
 586                             gfx::Rect(location_in_screen, gfx::Size()),
 587                             views::MENU_ANCHOR_TOPLEFT,
 588                             source_type) == views::MenuRunner::MENU_DELETED) {
 589     return;
 590   }
 591
 592   Shell::GetInstance()->UpdateShelfVisibility();
 593 }
 594
 595 void RootWindowController::UpdateShelfVisibility() {
 596   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 597 }
 598
 599 const aura::Window* RootWindowController::GetWindowForFullscreenMode() const {
 600   const aura::Window* topmost_window = NULL;
 601   const aura::Window* active_window = wm::GetActiveWindow();
 602   if (active_window && active_window->GetRootWindow() == GetRootWindow() &&
 603       IsSwitchableContainer(active_window->parent())) {
 604     // Use the active window when it is on the current root window to determine
 605     // the fullscreen state to allow temporarily using a panel or docked window
 606     // (which are always above the default container) while a fullscreen
 607     // window is open. We only use the active window when in a switchable
 608     // container as the launcher should not exit fullscreen mode.
 609     topmost_window = active_window;
 610   } else {
 611     // Otherwise, use the topmost window on the root window's default container
 612     // when there is no active window on this root window.
 613     const aura::Window::Windows& windows =
 614         GetContainer(kShellWindowId_DefaultContainer)->children();
 615     for (aura::Window::Windows::const_reverse_iterator iter = windows.rbegin();
 616          iter != windows.rend(); ++iter) {
 617       if (((*iter)->type() == ui::wm::WINDOW_TYPE_NORMAL ||
 618            (*iter)->type() == ui::wm::WINDOW_TYPE_PANEL) &&
 619           (*iter)->layer()->GetTargetVisibility()) {
 620         topmost_window = *iter;
 621         break;
 622       }
 623     }
 624   }
 625   while (topmost_window) {
 626     if (wm::GetWindowState(topmost_window)->IsFullscreen())
 627       return topmost_window;
 628     topmost_window = ::wm::GetTransientParent(topmost_window);
 629   }
 630   return NULL;
 631 }
 632
 633 void RootWindowController::ActivateKeyboard(
 634     keyboard::KeyboardController* keyboard_controller) {
 635   if (!keyboard::IsKeyboardEnabled() ||
 636       GetContainer(kShellWindowId_VirtualKeyboardContainer)) {
 637     return;
 638   }
 639   DCHECK(keyboard_controller);
 640   keyboard_controller->AddObserver(shelf()->shelf_layout_manager());
 641   keyboard_controller->AddObserver(panel_layout_manager_);
 642   keyboard_controller->AddObserver(docked_layout_manager_);
 643   keyboard_controller->AddObserver(workspace_controller_->layout_manager());
 644   Shell::GetInstance()->delegate()->VirtualKeyboardActivated(true);
 645   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 646   DCHECK(parent);
 647   aura::Window* keyboard_container =
 648       keyboard_controller->GetContainerWindow();
 649   keyboard_container->set_id(kShellWindowId_VirtualKeyboardContainer);
 650   parent->AddChild(keyboard_container);
 651   // TODO(oshima): Bounds of keyboard container should be handled by
 652   // RootWindowLayoutManager. Remove this after fixed RootWindowLayoutManager.
 653   keyboard_container->SetBounds(parent->bounds());
 654 }
 655
 656 void RootWindowController::DeactivateKeyboard(
 657     keyboard::KeyboardController* keyboard_controller) {
 658   if (!keyboard_controller ||
 659       !keyboard_controller->keyboard_container_initialized()) {
 660     return;
 661   }
 662   aura::Window* keyboard_container =
 663       keyboard_controller->GetContainerWindow();
 664   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
 665     aura::Window* parent =
 666         GetContainer(kShellWindowId_ImeWindowParentContainer);
 667     DCHECK(parent);
 668     parent->RemoveChild(keyboard_container);
 669     // Virtual keyboard may be deactivated while still showing, notify all
 670     // observers that keyboard bounds changed to 0 before remove them.
 671     keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
 672     keyboard_controller->RemoveObserver(shelf()->shelf_layout_manager());
 673     keyboard_controller->RemoveObserver(panel_layout_manager_);
 674     keyboard_controller->RemoveObserver(docked_layout_manager_);
 675     keyboard_controller->RemoveObserver(
 676         workspace_controller_->layout_manager());
 677     Shell::GetInstance()->delegate()->VirtualKeyboardActivated(false);
 678   }
 679 }
 680
 681 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
 682   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 683   return parent ? parent->Contains(window) : false;
 684 }
 685
 686 ////////////////////////////////////////////////////////////////////////////////
 687 // RootWindowController, private:
 688
 689 RootWindowController::RootWindowController(AshWindowTreeHost* ash_host)
 690     : ash_host_(ash_host),
 691       root_window_layout_(NULL),
 692       docked_layout_manager_(NULL),
 693       panel_layout_manager_(NULL),
 694       touch_hud_debug_(NULL),
 695       touch_hud_projection_(NULL) {
 696   aura::Window* root_window = GetRootWindow();
 697   GetRootWindowSettings(root_window)->controller = this;
 698   screen_dimmer_.reset(new ScreenDimmer(root_window));
 699
 700   stacking_controller_.reset(new StackingController);
 701   aura::client::SetWindowTreeClient(root_window, stacking_controller_.get());
 702   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window));
 703 }
 704
 705 void RootWindowController::Init(RootWindowType root_window_type,
 706                                 bool first_run_after_boot) {
 707   aura::Window* root_window = GetRootWindow();
 708   Shell* shell = Shell::GetInstance();
 709   shell->InitRootWindow(root_window);
 710
 711   ash_host_->AsWindowTreeHost()->SetCursor(ui::kCursorPointer);
 712   CreateContainersInRootWindow(root_window);
 713
 714   CreateSystemBackground(first_run_after_boot);
 715
 716   InitLayoutManagers();
 717   InitTouchHuds();
 718
 719   if (Shell::GetPrimaryRootWindowController()->
 720       GetSystemModalLayoutManager(NULL)->has_modal_background()) {
 721     GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 722   }
 723
 724   shell->AddShellObserver(this);
 725
 726   if (root_window_type == PRIMARY) {
 727     root_window_layout()->OnWindowResized();
 728     shell->InitKeyboard();
 729   } else {
 730     root_window_layout()->OnWindowResized();
 731     ash_host_->AsWindowTreeHost()->Show();
 732
 733     // Create a shelf if a user is already logged in.
 734     if (shell->session_state_delegate()->NumberOfLoggedInUsers())
 735       shelf()->CreateShelf();
 736
 737     // Notify shell observers about new root window.
 738     shell->OnRootWindowAdded(root_window);
 739   }
 740
 741 #if defined(OS_CHROMEOS)
 742   if (!CommandLine::ForCurrentProcess()->HasSwitch(
 743           switches::kAshDisableTouchExplorationMode)) {
 744     touch_exploration_manager_.reset(new AshTouchExplorationManager(this));
 745   }
 746 #endif
 747 }
 748
 749 void RootWindowController::InitLayoutManagers() {
 750   aura::Window* root_window = GetRootWindow();
 751   root_window_layout_ = new RootWindowLayoutManager(root_window);
 752   root_window->SetLayoutManager(root_window_layout_);
 753
 754   aura::Window* default_container =
 755       GetContainer(kShellWindowId_DefaultContainer);
 756   // Workspace manager has its own layout managers.
 757   workspace_controller_.reset(
 758       new WorkspaceController(default_container));
 759
 760   aura::Window* always_on_top_container =
 761       GetContainer(kShellWindowId_AlwaysOnTopContainer);
 762   always_on_top_container->SetLayoutManager(
 763       new WorkspaceLayoutManager(always_on_top_container));
 764   always_on_top_controller_.reset(new AlwaysOnTopController);
 765   always_on_top_controller_->SetAlwaysOnTopContainer(always_on_top_container);
 766
 767   DCHECK(!shelf_.get());
 768   aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
 769   // TODO(harrym): Remove when status area is view.
 770   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
 771   shelf_.reset(new ShelfWidget(
 772       shelf_container, status_container, workspace_controller()));
 773
 774   if (!Shell::GetInstance()->session_state_delegate()->
 775       IsActiveUserSessionStarted()) {
 776     // This window exists only to be a event target on login screen.
 777     // It does not have to handle events, nor be visible.
 778     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
 779     mouse_event_target_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
 780
 781     aura::Window* lock_background_container =
 782         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
 783     lock_background_container->AddChild(mouse_event_target_.get());
 784     mouse_event_target_->Show();
 785   }
 786
 787   // Create Docked windows layout manager
 788   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
 789   docked_layout_manager_ =
 790       new DockedWindowLayoutManager(docked_container, workspace_controller());
 791   docked_container->SetLayoutManager(docked_layout_manager_);
 792
 793   // Installs SnapLayoutManager to containers who set the
 794   // |kSnapsChildrenToPhysicalPixelBoundary| property.
 795   wm::InstallSnapLayoutManagerToContainers(root_window);
 796
 797   // Create Panel layout manager
 798   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
 799   panel_layout_manager_ = new PanelLayoutManager(panel_container);
 800   panel_container->SetLayoutManager(panel_layout_manager_);
 801   panel_container_handler_.reset(new PanelWindowEventHandler);
 802   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 803
 804   // Install an AttachedPanelWindowTargeter on the panel container to make it
 805   // easier to correctly target shelf buttons with touch.
 806   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 807                            -kResizeOutsideBoundsSize,
 808                            -kResizeOutsideBoundsSize,
 809                            -kResizeOutsideBoundsSize);
 810   gfx::Insets touch_extend = mouse_extend.Scale(
 811       kResizeOutsideBoundsScaleForTouch);
 812   panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 813       new AttachedPanelWindowTargeter(panel_container,
 814                                       mouse_extend,
 815                                       touch_extend,
 816                                       panel_layout_manager_)));
 817 }
 818
 819 void RootWindowController::InitTouchHuds() {
 820   CommandLine* command_line = CommandLine::ForCurrentProcess();
 821   if (command_line->HasSwitch(switches::kAshTouchHud))
 822     set_touch_hud_debug(new TouchHudDebug(GetRootWindow()));
 823   if (Shell::GetInstance()->is_touch_hud_projection_enabled())
 824     EnableTouchHudProjection();
 825 }
 826
 827 void RootWindowController::CreateSystemBackground(
 828     bool is_first_run_after_boot) {
 829   SkColor color = SK_ColorBLACK;
 830 #if defined(OS_CHROMEOS)
 831   if (is_first_run_after_boot)
 832     color = kChromeOsBootColor;
 833 #endif
 834   system_background_.reset(
 835       new SystemBackgroundController(GetRootWindow(), color));
 836
 837 #if defined(OS_CHROMEOS)
 838   // Make a copy of the system's boot splash screen so we can composite it
 839   // onscreen until the desktop background is ready.
 840   if (is_first_run_after_boot &&
 841       (CommandLine::ForCurrentProcess()->HasSwitch(
 842            switches::kAshCopyHostBackgroundAtBoot) ||
 843        CommandLine::ForCurrentProcess()->HasSwitch(
 844            switches::kAshAnimateFromBootSplashScreen)))
 845     boot_splash_screen_.reset(new BootSplashScreen(GetHost()));
 846 #endif
 847 }
 848
 849 void RootWindowController::CreateContainersInRootWindow(
 850     aura::Window* root_window) {
 851   // These containers are just used by PowerButtonController to animate groups
 852   // of containers simultaneously without messing up the current transformations
 853   // on those containers. These are direct children of the root window; all of
 854   // the other containers are their children.
 855
 856   // The desktop background container is not part of the lock animation, so it
 857   // is not included in those animate groups.
 858   // When screen is locked desktop background is moved to lock screen background
 859   // container (moved back on unlock). We want to make sure that there's an
 860   // opaque layer occluding the non-lock-screen layers.
 861   aura::Window* desktop_background_container = CreateContainer(
 862       kShellWindowId_DesktopBackgroundContainer,
 863       "DesktopBackgroundContainer",
 864       root_window);
 865   ::wm::SetChildWindowVisibilityChangesAnimated(desktop_background_container);
 866
 867   aura::Window* non_lock_screen_containers = CreateContainer(
 868       kShellWindowId_NonLockScreenContainersContainer,
 869       "NonLockScreenContainersContainer",
 870       root_window);
 871
 872   aura::Window* lock_background_containers = CreateContainer(
 873       kShellWindowId_LockScreenBackgroundContainer,
 874       "LockScreenBackgroundContainer",
 875       root_window);
 876   ::wm::SetChildWindowVisibilityChangesAnimated(lock_background_containers);
 877
 878   aura::Window* lock_screen_containers = CreateContainer(
 879       kShellWindowId_LockScreenContainersContainer,
 880       "LockScreenContainersContainer",
 881       root_window);
 882   aura::Window* lock_screen_related_containers = CreateContainer(
 883       kShellWindowId_LockScreenRelatedContainersContainer,
 884       "LockScreenRelatedContainersContainer",
 885       root_window);
 886
 887   CreateContainer(kShellWindowId_UnparentedControlContainer,
 888                   "UnparentedControlContainer",
 889                   non_lock_screen_containers);
 890
 891   aura::Window* default_container = CreateContainer(
 892       kShellWindowId_DefaultContainer,
 893       "DefaultContainer",
 894       non_lock_screen_containers);
 895   ::wm::SetChildWindowVisibilityChangesAnimated(default_container);
 896   wm::SetSnapsChildrenToPhysicalPixelBoundary(default_container);
 897   SetUsesScreenCoordinates(default_container);
 898   SetUsesEasyResizeTargeter(default_container);
 899
 900   aura::Window* always_on_top_container = CreateContainer(
 901       kShellWindowId_AlwaysOnTopContainer,
 902       "AlwaysOnTopContainer",
 903       non_lock_screen_containers);
 904   ::wm::SetChildWindowVisibilityChangesAnimated(always_on_top_container);
 905   wm::SetSnapsChildrenToPhysicalPixelBoundary(always_on_top_container);
 906   SetUsesScreenCoordinates(always_on_top_container);
 907
 908   aura::Window* docked_container = CreateContainer(
 909       kShellWindowId_DockedContainer,
 910       "DockedContainer",
 911       non_lock_screen_containers);
 912   ::wm::SetChildWindowVisibilityChangesAnimated(docked_container);
 913   wm::SetSnapsChildrenToPhysicalPixelBoundary(docked_container);
 914   SetUsesScreenCoordinates(docked_container);
 915   SetUsesEasyResizeTargeter(docked_container);
 916
 917   aura::Window* shelf_container =
 918       CreateContainer(kShellWindowId_ShelfContainer,
 919                       "ShelfContainer",
 920                       non_lock_screen_containers);
 921   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_container);
 922   SetUsesScreenCoordinates(shelf_container);
 923   DescendantShouldStayInSameRootWindow(shelf_container);
 924
 925   aura::Window* panel_container = CreateContainer(
 926       kShellWindowId_PanelContainer,
 927       "PanelContainer",
 928       non_lock_screen_containers);
 929   wm::SetSnapsChildrenToPhysicalPixelBoundary(panel_container);
 930   SetUsesScreenCoordinates(panel_container);
 931
 932   aura::Window* shelf_bubble_container =
 933       CreateContainer(kShellWindowId_ShelfBubbleContainer,
 934                       "ShelfBubbleContainer",
 935                       non_lock_screen_containers);
 936   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_bubble_container);
 937   SetUsesScreenCoordinates(shelf_bubble_container);
 938   DescendantShouldStayInSameRootWindow(shelf_bubble_container);
 939
 940   aura::Window* app_list_container =
 941       CreateContainer(kShellWindowId_AppListContainer,
 942                       "AppListContainer",
 943                       non_lock_screen_containers);
 944   wm::SetSnapsChildrenToPhysicalPixelBoundary(app_list_container);
 945   SetUsesScreenCoordinates(app_list_container);
 946
 947   aura::Window* modal_container = CreateContainer(
 948       kShellWindowId_SystemModalContainer,
 949       "SystemModalContainer",
 950       non_lock_screen_containers);
 951   wm::SetSnapsChildrenToPhysicalPixelBoundary(modal_container);
 952   modal_container->SetLayoutManager(
 953       new SystemModalContainerLayoutManager(modal_container));
 954   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
 955   SetUsesScreenCoordinates(modal_container);
 956   SetUsesEasyResizeTargeter(modal_container);
 957
 958   // TODO(beng): Figure out if we can make this use
 959   // SystemModalContainerEventFilter instead of stops_event_propagation.
 960   aura::Window* lock_container = CreateContainer(
 961       kShellWindowId_LockScreenContainer,
 962       "LockScreenContainer",
 963       lock_screen_containers);
 964   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_container);
 965   if (CommandLine::ForCurrentProcess()->HasSwitch(
 966           switches::kAshDisableLockLayoutManager)) {
 967     lock_container->SetLayoutManager(
 968             new WorkspaceLayoutManager(lock_container));
 969   } else {
 970     lock_container->SetLayoutManager(new LockLayoutManager(lock_container));
 971   }
 972   SetUsesScreenCoordinates(lock_container);
 973   // TODO(beng): stopsevents
 974
 975   aura::Window* lock_modal_container = CreateContainer(
 976       kShellWindowId_LockSystemModalContainer,
 977       "LockSystemModalContainer",
 978       lock_screen_containers);
 979   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_modal_container);
 980   lock_modal_container->SetLayoutManager(
 981       new SystemModalContainerLayoutManager(lock_modal_container));
 982   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
 983   SetUsesScreenCoordinates(lock_modal_container);
 984   SetUsesEasyResizeTargeter(lock_modal_container);
 985
 986   aura::Window* status_container =
 987       CreateContainer(kShellWindowId_StatusContainer,
 988                       "StatusContainer",
 989                       lock_screen_related_containers);
 990   wm::SetSnapsChildrenToPhysicalPixelBoundary(status_container);
 991   SetUsesScreenCoordinates(status_container);
 992   DescendantShouldStayInSameRootWindow(status_container);
 993
 994   aura::Window* settings_bubble_container = CreateContainer(
 995       kShellWindowId_SettingBubbleContainer,
 996       "SettingBubbleContainer",
 997       lock_screen_related_containers);
 998   ::wm::SetChildWindowVisibilityChangesAnimated(settings_bubble_container);
 999   wm::SetSnapsChildrenToPhysicalPixelBoundary(settings_bubble_container);
1000   SetUsesScreenCoordinates(settings_bubble_container);
1001   DescendantShouldStayInSameRootWindow(settings_bubble_container);
1002
1003   aura::Window* virtual_keyboard_parent_container =
1004       CreateContainer(kShellWindowId_ImeWindowParentContainer,
1005                       "VirtualKeyboardParentContainer",
1006                       lock_screen_related_containers);
1007   wm::SetSnapsChildrenToPhysicalPixelBoundary(
1008       virtual_keyboard_parent_container);
1009   virtual_keyboard_parent_container->SetLayoutManager(
1010       new VirtualKeyboardContainerLayoutManager(
1011           virtual_keyboard_parent_container));
1012   SetUsesScreenCoordinates(virtual_keyboard_parent_container);
1013
1014   aura::Window* menu_container = CreateContainer(
1015       kShellWindowId_MenuContainer,
1016       "MenuContainer",
1017       lock_screen_related_containers);
1018   ::wm::SetChildWindowVisibilityChangesAnimated(menu_container);
1019   wm::SetSnapsChildrenToPhysicalPixelBoundary(menu_container);
1020   SetUsesScreenCoordinates(menu_container);
1021
1022   aura::Window* drag_drop_container = CreateContainer(
1023       kShellWindowId_DragImageAndTooltipContainer,
1024       "DragImageAndTooltipContainer",
1025       lock_screen_related_containers);
1026   ::wm::SetChildWindowVisibilityChangesAnimated(drag_drop_container);
1027   wm::SetSnapsChildrenToPhysicalPixelBoundary(drag_drop_container);
1028   SetUsesScreenCoordinates(drag_drop_container);
1029
1030   aura::Window* overlay_container = CreateContainer(
1031       kShellWindowId_OverlayContainer,
1032       "OverlayContainer",
1033       lock_screen_related_containers);
1034   wm::SetSnapsChildrenToPhysicalPixelBoundary(overlay_container);
1035   SetUsesScreenCoordinates(overlay_container);
1036
1037 #if defined(OS_CHROMEOS)
1038   aura::Window* mouse_cursor_container = CreateContainer(
1039       kShellWindowId_MouseCursorContainer,
1040       "MouseCursorContainer",
1041       root_window);
1042   SetUsesScreenCoordinates(mouse_cursor_container);
1043 #endif
1044
1045   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
1046                   "PowerButtonAnimationContainer", root_window);
1047 }
1048
1049 void RootWindowController::EnableTouchHudProjection() {
1050   if (touch_hud_projection_)
1051     return;
1052   set_touch_hud_projection(new TouchHudProjection(GetRootWindow()));
1053 }
1054
1055 void RootWindowController::DisableTouchHudProjection() {
1056   if (!touch_hud_projection_)
1057     return;
1058   touch_hud_projection_->Remove();
1059 }
1060
1061 void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
1062   shelf_->shelf_layout_manager()->UpdateVisibilityState();
1063 }
1064
1065 void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
1066   if (enabled)
1067     EnableTouchHudProjection();
1068   else
1069     DisableTouchHudProjection();
1070 }
1071
1072 RootWindowController* GetRootWindowController(
1073     const aura::Window* root_window) {
1074   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
1075 }
1076
1077 }  // namespace ash