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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <map>
#include <memory>
#include <vector>
#include "ash/ash_export.h"
#include "ash/public/cpp/shelf_types.h"
#include "ash/sidebar/sidebar.h"
#include "ash/wm/workspace/workspace_types.h"
#include "base/macros.h"
#include "ui/aura/window.h"
#include "ui/aura/window_tree_host.h"
namespace aura {
class Window;
namespace gfx {
class Point;
namespace keyboard {
class KeyboardController;
namespace ui {
class EventHandler;
class MenuModel;
class WindowTreeHost;
namespace views {
class MenuModelAdapter;
class MenuRunner;
class Widget;
namespace wm {
class ScopedCaptureClient;
namespace ash {
class AlwaysOnTopController;
class AnimatingWallpaperWidgetController;
class AshTouchExplorationManager;
class AshWindowTreeHost;
class LockScreenActionBackgroundController;
enum class LoginStatus;
class PanelLayoutManager;
class Shelf;
class ShelfLayoutManager;
class Sidebar;
class StackingController;
class StatusAreaWidget;
class SystemModalContainerLayoutManager;
class SystemTray;
class SystemWallpaperController;
class TouchHudDebug;
class TouchHudProjection;
class WallpaperWidgetController;
class WindowManager;
class WorkspaceController;
namespace wm {
class RootWindowLayoutManager;
// This class maintains the per root window state for ash. This class
// owns the root window and other dependent objects that should be
// deleted upon the deletion of the root window. This object is
// indirectly owned and deleted by |WindowTreeHostManager|.
// The RootWindowController for particular root window is stored in
// its property (RootWindowSettings) and can be obtained using
// |RootWindowController::ForWindow(aura::Window*)| function.
class ASH_EXPORT RootWindowController {
// Enumerates the type of display. If there is only a single display then
// it is primary. In a multi-display environment one monitor is deemed the
// PRIMARY and all others SECONDARY.
enum class RootWindowType { PRIMARY, SECONDARY };
// Creates and Initialize the RootWindowController for primary display.
static void CreateForPrimaryDisplay(AshWindowTreeHost* host);
// Creates and Initialize the RootWindowController for secondary displays.
static void CreateForSecondaryDisplay(AshWindowTreeHost* host);
// Returns a RootWindowController of the window's root window.
static RootWindowController* ForWindow(const aura::Window* window);
// Returns the RootWindowController of the target root window.
static RootWindowController* ForTargetRootWindow();
static std::vector<RootWindowController*> root_window_controllers() {
return root_window_controllers_ ? *root_window_controllers_
: std::vector<RootWindowController*>();
// TODO(sky): move these to a separate class or use AshWindowTreeHost in
// mash.
AshWindowTreeHost* ash_host() { return ash_host_.get(); }
const AshWindowTreeHost* ash_host() const { return ash_host_.get(); }
aura::WindowTreeHost* GetHost();
const aura::WindowTreeHost* GetHost() const;
aura::Window* GetRootWindow();
const aura::Window* GetRootWindow() const;
WorkspaceController* workspace_controller() {
return workspace_controller_.get();
wm::WorkspaceWindowState GetWorkspaceWindowState();
Shelf* shelf() const { return shelf_.get(); }
// Initializes the shelf for this root window and notifies observers.
void InitializeShelf();
// Returns the instance of the sidebar.
Sidebar* sidebar() { return sidebar_.get(); }
// Get touch HUDs associated with this root window controller.
TouchHudDebug* touch_hud_debug() const { return touch_hud_debug_; }
TouchHudProjection* touch_hud_projection() const {
return touch_hud_projection_;
// Set touch HUDs for this root window controller. The root window controller
// will not own the HUDs; their lifetimes are managed by themselves. Whenever
// the widget showing a HUD is being destroyed (e.g. because of detaching a
// display), the HUD deletes itself.
void set_touch_hud_debug(TouchHudDebug* hud) { touch_hud_debug_ = hud; }
void set_touch_hud_projection(TouchHudProjection* hud) {
touch_hud_projection_ = hud;
PanelLayoutManager* panel_layout_manager() { return panel_layout_manager_; }
wm::RootWindowLayoutManager* root_window_layout_manager() {
return root_window_layout_manager_;
// Access the shelf layout manager associated with this root
// window controller, NULL if no such shelf exists.
ShelfLayoutManager* GetShelfLayoutManager();
// Returns the layout manager for the appropriate modal-container. If the
// window is inside the lockscreen modal container, then the layout manager
// for that is returned. Otherwise the layout manager for the default modal
// container is returned.
// If no window is specified (i.e. |window| is null), then the lockscreen
// modal container is used if the screen is currently locked. Otherwise, the
// default modal container is used.
SystemModalContainerLayoutManager* GetSystemModalLayoutManager(
aura::Window* window);
AlwaysOnTopController* always_on_top_controller() {
return always_on_top_controller_.get();
// May return null, for example for a secondary monitor at the login screen.
StatusAreaWidget* GetStatusAreaWidget();
// Returns the system tray on this root window. Note that
// calling this on the root window that doesn't have a shelf will
// lead to a crash.
SystemTray* GetSystemTray();
// True if the window can receive events on this root window.
bool CanWindowReceiveEvents(aura::Window* window);
// Returns the window events will be targeted at for the specified location
// (in screen coordinates).
// NOTE: the returned window may not contain the location as resize handles
// may extend outside the bounds of the window.
aura::Window* FindEventTarget(const gfx::Point& location_in_screen);
// Gets the last location seen in a mouse event in this root window's
// coordinates. This may return a point outside the root window's bounds.
gfx::Point GetLastMouseLocationInRoot();
aura::Window* GetContainer(int container_id);
const aura::Window* GetContainer(int container_id) const;
WallpaperWidgetController* wallpaper_widget_controller() {
return wallpaper_widget_controller_.get();
void SetWallpaperWidgetController(WallpaperWidgetController* controller);
AnimatingWallpaperWidgetController* animating_wallpaper_widget_controller() {
return animating_wallpaper_widget_controller_.get();
void SetAnimatingWallpaperWidgetController(
AnimatingWallpaperWidgetController* controller);
lock_screen_action_background_controller() {
return lock_screen_action_background_controller_.get();
// Called when the wallpaper animation is finished. Updates
// |system_wallpaper_| to be black and drops |boot_splash_screen_| and moves
// the wallpaper controller into the root window controller. |widget| holds
// the wallpaper image, or NULL if the wallpaper is a solid color.
void OnWallpaperAnimationFinished(views::Widget* widget);
// Deletes associated objects and clears the state, but doesn't delete
// the root window yet. This is used to delete a secondary displays'
// root window safely when the display disconnect signal is received,
// which may come while we're in the nested run loop.
void Shutdown();
// Deletes all child windows and performs necessary cleanup.
void CloseChildWindows();
// Moves child windows to |dest|.
void MoveWindowsTo(aura::Window* dest);
// Force the shelf to query for it's current visibility state.
void UpdateShelfVisibility();
// Initialize touch HUDs if necessary.
void InitTouchHuds();
// Returns the topmost window or one of its transient parents, if any of them
// are in fullscreen mode.
aura::Window* GetWindowForFullscreenMode();
// Activate virtual keyboard on current root window controller.
void ActivateKeyboard(keyboard::KeyboardController* keyboard_controller);
// Deactivate virtual keyboard on current root window controller.
void DeactivateKeyboard(keyboard::KeyboardController* keyboard_controller);
// If touch exploration is enabled, update the touch exploration
// controller so that synthesized touch events are anchored at this point.
void SetTouchAccessibilityAnchorPoint(const gfx::Point& anchor_point);
// Shows a context menu at the |location_in_screen|.
void ShowContextMenu(const gfx::Point& location_in_screen,
ui::MenuSourceType source_type);
// Called when the login status changes after login (such as lock/unlock).
void UpdateAfterLoginStatusChange(LoginStatus status);
// TODO(sky): remove this. Temporary during ash-mus unification.
friend class WindowManager;
// Creates a new RootWindowController with the specified host. Only one of
// |ash_host| or |window_tree_host| should be specified. This takes ownership
// of the supplied arguments.
// TODO(sky): mash should create AshWindowTreeHost,
RootWindowController(AshWindowTreeHost* ash_host,
aura::WindowTreeHost* window_tree_host);
// Initializes the RootWindowController based on |root_window_type|.
void Init(RootWindowType root_window_type);
void InitLayoutManagers();
// Creates the containers (aura::Windows) used by the shell.
void CreateContainers();
// Initializes |system_wallpaper_| and possibly also |boot_splash_screen_|.
// The initial color is determined by the |root_window_type| and whether or
// not this is the first boot.
void CreateSystemWallpaper(RootWindowType root_window_type);
// Resets Shell::GetRootWindowForNewWindows() if appropriate. This is called
// during shutdown to make sure GetRootWindowForNewWindows() isn't referencing
// this.
void ResetRootForNewWindowsIfNecessary();
// Callback for MenuModelAdapter.
void OnMenuClosed();
std::unique_ptr<AshWindowTreeHost> ash_host_;
std::unique_ptr<aura::WindowTreeHost> mus_window_tree_host_;
// This comes from |ash_host_| or |mus_window_tree_host_|.
aura::WindowTreeHost* window_tree_host_;
// LayoutManagers are owned by the window they are installed on.
PanelLayoutManager* panel_layout_manager_ = nullptr;
wm::RootWindowLayoutManager* root_window_layout_manager_ = nullptr;
std::unique_ptr<WallpaperWidgetController> wallpaper_widget_controller_;
std::unique_ptr<WorkspaceController> workspace_controller_;
std::unique_ptr<AlwaysOnTopController> always_on_top_controller_;
// Manages the context menu.
std::unique_ptr<ui::MenuModel> menu_model_;
std::unique_ptr<views::MenuModelAdapter> menu_model_adapter_;
std::unique_ptr<views::MenuRunner> menu_runner_;
std::unique_ptr<StackingController> stacking_controller_;
// The shelf controller for this root window. Exists for the entire lifetime
// of the RootWindowController so that it is safe for observers to be added
// to it during construction of the shelf widget and status tray.
std::unique_ptr<Shelf> shelf_;
std::unique_ptr<Sidebar> sidebar_;
// TODO(jamescook): Eliminate this. It is left over from legacy shelf code and
// doesn't mean anything in particular.
bool shelf_initialized_ = false;
std::unique_ptr<SystemWallpaperController> system_wallpaper_;
// Responsible for initializing TouchExplorationController when spoken
// feedback is on.
std::unique_ptr<AshTouchExplorationManager> touch_exploration_manager_;
// Heads-up displays for touch events. These HUDs are not owned by the root
// window controller and manage their own lifetimes.
TouchHudDebug* touch_hud_debug_ = nullptr;
TouchHudProjection* touch_hud_projection_ = nullptr;
// Handles double clicks on the panel window header.
std::unique_ptr<ui::EventHandler> panel_container_handler_;
std::unique_ptr<::wm::ScopedCaptureClient> capture_client_;
static std::vector<RootWindowController*>* root_window_controllers_;
} // namespace ash