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