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      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_BROWSER_NATIVE_WINDOW_NOTIFICATION_SOURCE_H_
      6 #define CHROME_BROWSER_NATIVE_WINDOW_NOTIFICATION_SOURCE_H_
      7 
      8 #include "content/public/browser/notification_source.h"
      9 #include "ui/gfx/native_widget_types.h"
     10 
     11 namespace content {
     12 
     13 // Specialization of the Source class for native windows.  On Windows, these are
     14 // HWNDs rather than pointers, and since the Source class expects a pointer
     15 // type, this is necessary.  On Mac/Linux, these are pointers, so this is
     16 // unnecessary but harmless.
     17 template<>
     18 class Source<gfx::NativeWindow> : public content::NotificationSource {
     19  public:
     20   explicit Source(gfx::NativeWindow wnd) : content::NotificationSource(wnd) {}
     21 
     22   explicit Source(const content::NotificationSource& other)
     23       : content::NotificationSource(other) {}
     24 
     25   gfx::NativeWindow operator->() const { return ptr(); }
     26   gfx::NativeWindow ptr() const {
     27     return static_cast<gfx::NativeWindow>(const_cast<void*>(ptr_));
     28   }
     29 };
     30 
     31 }
     32 
     33 #endif  // CHROME_BROWSER_NATIVE_WINDOW_NOTIFICATION_SOURCE_H_
     34