ash/wm/maximize_mode/maximize_mode_event_blocker.h

   1 // Copyright 2014 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_MAXIMIZE_MODE_MAXIMIZE_MODE_EVENT_BLOCKER_H_
   6 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_EVENT_BLOCKER_H_
   7
   8 #include "ash/shell_observer.h"
   9 #include "base/macros.h"
  10 #include "base/memory/scoped_vector.h"
  11 #include "ui/aura/scoped_window_targeter.h"
  12
  13 namespace aura {
  14 class Window;
  15 }  // namespace aura
  16
  17 namespace ash {
  18
  19 // A class which blocks mouse and keyboard events while instantiated by
  20 // replacing the root window event targeter.
  21 class MaximizeModeEventBlocker : public ShellObserver {
  22  public:
  23   MaximizeModeEventBlocker();
  24   virtual ~MaximizeModeEventBlocker();
  25
  26   // ShellObserver:
  27   virtual void OnRootWindowAdded(aura::Window* root_window) OVERRIDE;
  28
  29  private:
  30   // Adds an event targeter on |root_window| to block mouse and keyboard events.
  31   void AddEventTargeterOn(aura::Window* root_window);
  32
  33   ScopedVector<aura::ScopedWindowTargeter> targeters_;
  34
  35   DISALLOW_COPY_AND_ASSIGN(MaximizeModeEventBlocker);
  36 };
  37
  38 }  // namespace ash
  39
  40 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_EVENT_BLOCKER_H_