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. 16template<> 17class 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_ 31