chrome/common/native_window_notification_source.h

   1 // Copyright (c) 2011 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 CHROME_COMMON_NATIVE_WINDOW_NOTIFICATION_SOURCE_H_
   6 #define CHROME_COMMON_NATIVE_WINDOW_NOTIFICATION_SOURCE_H_
   7 #pragma once
   8
   9 #include "content/common/notification_source.h"
  10 #include "ui/gfx/native_widget_types.h"
  11
  12 // Specialization of the Source class for native windows.  On Windows, these are
  13 // HWNDs rather than pointers, and since the Source class expects a pointer
  14 // type, this is necessary.  On Mac/Linux, these are pointers, so this is
  15 // unnecessary but harmless.
  16 template<>
  17 class Source<gfx::NativeWindow> : public NotificationSource {
  18  public:
  19   explicit Source(gfx::NativeWindow wnd) : NotificationSource(wnd) {}
  20
  21   explicit Source(const NotificationSource& other)
  22       : NotificationSource(other) {}
  23
  24   gfx::NativeWindow operator->() const { return ptr(); }
  25   gfx::NativeWindow ptr() const {
  26     return static_cast<gfx::NativeWindow>(const_cast<void*>(ptr_));
  27   }
  28 };
  29
  30 #endif  // CHROME_COMMON_NATIVE_WINDOW_NOTIFICATION_SOURCE_H_