Initial cut of ash/wm/common classes for mus

mash/wm/bridge/wm_globals_mus.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 MASH_WM_BRIDGE_WM_GLOBALS_MUS_H_
+#define MASH_WM_BRIDGE_WM_GLOBALS_MUS_H_
+
+#include <stdint.h>
+
+#include <vector>
+
+#include "ash/wm/common/wm_globals.h"
+#include "base/macros.h"
+#include "base/observer_list.h"
+#include "components/mus/public/cpp/window_tree_connection_observer.h"
+
+namespace mus {
+class WindowTreeConnection;
+}
+
+namespace mash {
+namespace wm {
+
+class WmRootWindowControllerMus;
+class WmWindowMus;
+
+// WmGlobals implementation for mus.
+class WmGlobalsMus : public ash::wm::WmGlobals,
+                     public mus::WindowTreeConnectionObserver {
+ public:
+  explicit WmGlobalsMus(mus::WindowTreeConnection* connection);
+  ~WmGlobalsMus() override;
+
+  static WmGlobalsMus* Get();
+
+  void AddRootWindowController(WmRootWindowControllerMus* controller);
+  void RemoveRootWindowController(WmRootWindowControllerMus* controller);
+
+  // Returns the ancestor of |window| (including |window|) that is considered
+  // toplevel. |window| may be null.

[James Cook, 2016/05/06 19:46:46]

What if window itself is toplevel? Returns null?

[sky, 2016/05/06 22:12:57]

Does the '(including window)' clarify that?

+  static WmWindowMus* GetToplevelAncestor(mus::Window* window);
+
+  WmRootWindowControllerMus* GetRootWindowControllerWithDisplayId(int64_t id);
+
+  // WmGlobals:
+  ash::wm::WmWindow* GetFocusedWindow() override;
+  ash::wm::WmWindow* GetActiveWindow() override;
+  ash::wm::WmWindow* GetRootWindowForDisplayId(int64_t display_id) override;
+  ash::wm::WmWindow* GetRootWindowForNewWindows() override;
+  std::vector<ash::wm::WmWindow*> GetMruWindowListIgnoreModals() override;
+  bool IsForceMaximizeOnFirstRun() override;
+  bool IsUserSessionBlocked() override;
+  bool IsScreenLocked() override;
+  void LockCursor() override;
+  void UnlockCursor() override;
+  std::vector<ash::wm::WmWindow*> GetAllRootWindows() override;
+  void RecordUserMetricsAction(ash::wm::WmUserMetricsAction action) override;
+  std::unique_ptr<ash::WindowResizer> CreateDragWindowResizer(
+      std::unique_ptr<ash::WindowResizer> next_window_resizer,
+      ash::wm::WindowState* window_state) override;
+  bool IsOverviewModeSelecting() override;
+  bool IsOverviewModeRestoringMinimizedWindows() override;
+  void AddActivationObserver(ash::wm::WmActivationObserver* observer) override;
+  void RemoveActivationObserver(
+      ash::wm::WmActivationObserver* observer) override;
+  void AddDisplayObserver(ash::wm::WmDisplayObserver* observer) override;
+  void RemoveDisplayObserver(ash::wm::WmDisplayObserver* observer) override;
+  void AddOverviewModeObserver(
+      ash::wm::WmOverviewModeObserver* observer) override;
+  void RemoveOverviewModeObserver(
+      ash::wm::WmOverviewModeObserver* observer) override;
+
+ private:
+  // Returns true if |window| is a window that can have active children.
+  static bool IsActivationParent(mus::Window* window);
+
+  // mus::WindowTreeConnectionObserver:
+  void OnWindowTreeFocusChanged(mus::Window* gained_focus,
+                                mus::Window* lost_focus) override;
+
+  mus::WindowTreeConnection* connection_;
+
+  std::vector<WmRootWindowControllerMus*> root_window_controllers_;
+
+  base::ObserverList<ash::wm::WmActivationObserver> activation_observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(WmGlobalsMus);
+};
+
+}  // namespace wm
+}  // namespace mash
+
+#endif  // MASH_WM_BRIDGE_WM_GLOBALS_MUS_H_