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