1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/chromium/src/chrome/common/notification_source.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,51 @@
1.4 +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +// This file defines the type used to provide sources for NotificationService
1.9 +// notifications.
1.10 +
1.11 +#ifndef CHROME_COMMON_NOTIFICATION_SOURCE_H__
1.12 +#define CHROME_COMMON_NOTIFICATION_SOURCE_H__
1.13 +
1.14 +#include "base/basictypes.h"
1.15 +
1.16 +// Do not declare a NotificationSource directly--use either
1.17 +// "Source<sourceclassname>(sourceclasspointer)" or
1.18 +// NotificationService::AllSources().
1.19 +class NotificationSource {
1.20 + public:
1.21 + NotificationSource(const NotificationSource& other) : ptr_(other.ptr_) { }
1.22 + ~NotificationSource() {}
1.23 +
1.24 + // NotificationSource can be used as the index for a map; this method
1.25 + // returns the pointer to the current source as an identifier, for use as a
1.26 + // map index.
1.27 + uintptr_t map_key() const { return reinterpret_cast<uintptr_t>(ptr_); }
1.28 +
1.29 + bool operator!=(const NotificationSource& other) const {
1.30 + return ptr_ != other.ptr_;
1.31 + }
1.32 + bool operator==(const NotificationSource& other) const {
1.33 + return ptr_ == other.ptr_;
1.34 + }
1.35 +
1.36 + protected:
1.37 + NotificationSource(void* ptr) : ptr_(ptr) {}
1.38 +
1.39 + void* ptr_;
1.40 +};
1.41 +
1.42 +template <class T>
1.43 +class Source : public NotificationSource {
1.44 + public:
1.45 + Source(T* ptr) : NotificationSource(ptr) {}
1.46 +
1.47 + Source(const NotificationSource& other)
1.48 + : NotificationSource(other) {}
1.49 +
1.50 + T* operator->() const { return ptr(); }
1.51 + T* ptr() const { return static_cast<T*>(ptr_); }
1.52 +};
1.53 +
1.54 +#endif // CHROME_COMMON_NOTIFICATION_SOURCE_H__
