57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: Watcher.h
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// Author: Ingo Weinhold (bonefish@users.sf.net)
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// Description: A Watcher represents a target of a watching service.
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// A WatcherFilter represents a predicate on Watchers.
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//------------------------------------------------------------------------------
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#ifndef WATCHER_H
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#define WATCHER_H
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#include <Messenger.h>
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// Watcher
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class Watcher {
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public:
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Watcher(const BMessenger &target);
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virtual ~Watcher();
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const BMessenger &Target() const;
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virtual status_t SendMessage(BMessage *message);
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private:
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BMessenger fTarget;
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};
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// WatcherFilter
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class WatcherFilter {
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public:
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WatcherFilter();
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virtual ~WatcherFilter();
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virtual bool Filter(Watcher *watcher, BMessage *message);
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};
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#endif // WATCHER_H
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