ash/wm/overview/window_selector_controller.h

   1 // Copyright 2013 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_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_
   6 #define ASH_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_
   7
   8 #include <list>
   9 #include <vector>
  10
  11 #include "ash/ash_export.h"
  12 #include "ash/wm/overview/window_selector.h"
  13 #include "ash/wm/overview/window_selector_delegate.h"
  14 #include "base/basictypes.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/time/time.h"
  17 #include "ui/aura/window_observer.h"
  18
  19 namespace aura {
  20 class Window;
  21 }
  22
  23 namespace ash {
  24 class WindowSelector;
  25 class WindowSelectorTest;
  26
  27 // Manages a window selector which displays an overview of all windows and
  28 // allows selecting a window to activate it.
  29 class ASH_EXPORT WindowSelectorController
  30     : public WindowSelectorDelegate {
  31  public:
  32   WindowSelectorController();
  33   ~WindowSelectorController() override;
  34
  35   // Returns true if selecting windows in an overview is enabled. This is false
  36   // at certain times, such as when the lock screen is visible.
  37   static bool CanSelect();
  38
  39   // Enters overview mode. This is essentially the window cycling mode however
  40   // not released on releasing the alt key and allows selecting with the mouse
  41   // or touch rather than keypresses.
  42   void ToggleOverview();
  43
  44   // Returns true if window selection mode is active.
  45   bool IsSelecting();
  46
  47   // WindowSelectorDelegate:
  48   void OnSelectionEnded() override;
  49
  50  private:
  51   friend class WindowSelectorTest;
  52
  53   // Dispatched when window selection begins.
  54   void OnSelectionStarted();
  55
  56   scoped_ptr<WindowSelector> window_selector_;
  57   base::Time last_selection_time_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(WindowSelectorController);
  60 };
  61
  62 }  // namespace ash
  63
  64 #endif  // ASH_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_