ash/shell/window_watcher.h

   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 #ifndef ASH_SHELL_WINDOW_WATCHER_H_
   6 #define ASH_SHELL_WINDOW_WATCHER_H_
   7
   8 #include <map>
   9
  10 #include "ash/shelf/shelf_item_types.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/logging.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "ui/aura/window_observer.h"
  15 #include "ui/gfx/display_observer.h"
  16
  17 namespace aura {
  18 class Window;
  19 }
  20
  21 namespace ash {
  22 namespace shell {
  23
  24 // TODO(sky): fix this class, its a bit broke with workspace2.
  25
  26 // WindowWatcher is responsible for listening for newly created windows and
  27 // creating items on the Shelf for them.
  28 class WindowWatcher : public aura::WindowObserver,
  29                       public gfx::DisplayObserver {
  30  public:
  31   WindowWatcher();
  32   ~WindowWatcher() override;
  33
  34   aura::Window* GetWindowByID(ash::ShelfID id);
  35
  36   // aura::WindowObserver overrides:
  37   void OnWindowAdded(aura::Window* new_window) override;
  38   void OnWillRemoveWindow(aura::Window* window) override;
  39
  40   // gfx::DisplayObserver overrides:
  41   void OnDisplayAdded(const gfx::Display& new_display) override;
  42   void OnDisplayRemoved(const gfx::Display& old_display) override;
  43   void OnDisplayMetricsChanged(const gfx::Display& display,
  44                                uint32_t metrics) override;
  45
  46  private:
  47   class WorkspaceWindowWatcher;
  48
  49   typedef std::map<ash::ShelfID, aura::Window*> IDToWindow;
  50
  51   // Maps from window to the id we gave it.
  52   IDToWindow id_to_window_;
  53
  54   scoped_ptr<WorkspaceWindowWatcher> workspace_window_watcher_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(WindowWatcher);
  57 };
  58
  59 }  // namespace shell
  60 }  // namespace ash
  61
  62 #endif  // ASH_SHELL_WINDOW_WATCHER_H_