1//------------------------------------------------------------------------------ 2// Copyright (c) 2001-2002, Haiku 3// 4// Permission is hereby granted, free of charge, to any person obtaining a 5// copy of this software and associated documentation files (the "Software"), 6// to deal in the Software without restriction, including without limitation 7// the rights to use, copy, modify, merge, publish, distribute, sublicense, 8// and/or sell copies of the Software, and to permit persons to whom the 9// Software is furnished to do so, subject to the following conditions: 10// 11// The above copyright notice and this permission notice shall be included in 12// all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20// DEALINGS IN THE SOFTWARE. 21// 22// File Name: WatchingService.h 23// Author: Ingo Weinhold (bonefish@users.sf.net) 24// Description: Features everything needed to provide a watching service. 25//------------------------------------------------------------------------------ 26 27#ifndef WATCHING_SERVICE_H 28#define WATCHING_SERVICE_H 29 30#include <map> 31 32#include <Messenger.h> 33 34class Watcher; 35class WatcherFilter; 36 37class WatchingService { 38public: 39 WatchingService(); 40 virtual ~WatchingService(); 41 42 bool AddWatcher(Watcher *watcher); 43 bool AddWatcher(const BMessenger &target); 44 bool RemoveWatcher(Watcher *watcher, bool deleteWatcher = true); 45 bool RemoveWatcher(const BMessenger &target, bool deleteWatcher = true); 46 47 void NotifyWatchers(BMessage *message, WatcherFilter *filter = NULL); 48 49private: 50 typedef std::map<BMessenger,Watcher*> watcher_map; 51 52private: 53 watcher_map fWatchers; 54}; 55 56#endif // WATCHING_SERVICE_H 57