Move mus to //services/ui

components/mus/ws/display_manager.h

-// Copyright 2016 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.
-
-#ifndef COMPONENTS_MUS_WS_DISPLAY_MANAGER_H_
-#define COMPONENTS_MUS_WS_DISPLAY_MANAGER_H_
-
-#include <map>
-#include <memory>
-#include <set>
-
-#include "base/macros.h"
-#include "components/mus/ws/ids.h"
-#include "components/mus/ws/user_id.h"
-#include "components/mus/ws/user_id_tracker_observer.h"
-
-namespace mus {
-namespace ws {
-
-class Display;
-class DisplayManagerDelegate;
-class ServerWindow;
-class UserDisplayManager;
-class UserIdTracker;
-class WindowManagerDisplayRoot;
-
-// DisplayManager manages the set of Displays. DisplayManager distinguishes
-// between displays that do yet have an accelerated widget (pending), vs
-// those that do.
-class DisplayManager : public UserIdTrackerObserver {
- public:
-  DisplayManager(DisplayManagerDelegate* delegate,
-                 UserIdTracker* user_id_tracker);
-  ~DisplayManager() override;
-
-  // Returns the UserDisplayManager for |user_id|. DisplayManager owns the
-  // return value.
-  UserDisplayManager* GetUserDisplayManager(const UserId& user_id);
-
-  // Adds/removes a Display. DisplayManager owns the Displays.
-  // TODO(sky): make add take a scoped_ptr.
-  void AddDisplay(Display* display);
-  void DestroyDisplay(Display* display);
-  void DestroyAllDisplays();
-  const std::set<Display*>& displays() { return displays_; }
-  std::set<const Display*> displays() const;
-
-  // Notifies when something about the Display changes.
-  void OnDisplayUpdate(Display* display);
-
-  // Returns the Display that contains |window|, or null if |window| is not
-  // attached to a display.
-  Display* GetDisplayContaining(ServerWindow* window);
-  const Display* GetDisplayContaining(const ServerWindow* window) const;
-
-  const WindowManagerDisplayRoot* GetWindowManagerDisplayRoot(
-      const ServerWindow* window) const;
-  // TODO(sky): constness here is wrong! fix!
-  WindowManagerDisplayRoot* GetWindowManagerDisplayRoot(
-      const ServerWindow* window);
-
-  bool has_displays() const { return !displays_.empty(); }
-  bool has_active_or_pending_displays() const {
-    return !displays_.empty() || !pending_displays_.empty();
-  }
-
-  // Returns the id for the next root window (both for the root of a Display
-  // as well as the root of WindowManagers).
-  WindowId GetAndAdvanceNextRootId();
-
-  uint32_t GetAndAdvanceNextDisplayId();
-
-  // Called when the AcceleratedWidget is available for |display|.
-  void OnDisplayAcceleratedWidgetAvailable(Display* display);
-
- private:
-  // UserIdTrackerObserver:
-  void OnActiveUserIdChanged(const UserId& previously_active_id,
-                             const UserId& active_id) override;
-
-  DisplayManagerDelegate* delegate_;
-  UserIdTracker* user_id_tracker_;
-
-  // Displays are initially added to |pending_displays_|. When the display is
-  // initialized it is moved to |displays_|. WindowServer owns the Displays.
-  std::set<Display*> pending_displays_;
-  std::set<Display*> displays_;
-
-  std::map<UserId, std::unique_ptr<UserDisplayManager>> user_display_managers_;
-
-  // ID to use for next root node.
-  ClientSpecificId next_root_id_;
-
-  uint32_t next_display_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(DisplayManager);
-};
-
-}  // namespace ws
-}  // namespace mus
-
-#endif  // COMPONENTS_MUS_WS_DISPLAY_MANAGER_H_