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132 lines
3.3 KiB
C++
132 lines
3.3 KiB
C++
//
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// NotificationCenter.cpp
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//
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// $Id: //poco/1.4/Foundation/src/NotificationCenter.cpp#2 $
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//
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// Library: Foundation
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// Package: Notifications
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// Module: NotificationCenter
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING 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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#include "Poco/NotificationCenter.h"
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#include "Poco/Notification.h"
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#include "Poco/Observer.h"
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#include "Poco/AutoPtr.h"
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#include "Poco/SingletonHolder.h"
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namespace Poco {
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NotificationCenter::NotificationCenter()
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{
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}
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NotificationCenter::~NotificationCenter()
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{
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}
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void NotificationCenter::addObserver(const AbstractObserver& observer)
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{
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Mutex::ScopedLock lock(_mutex);
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_observers.push_back(observer.clone());
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}
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void NotificationCenter::removeObserver(const AbstractObserver& observer)
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{
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Mutex::ScopedLock lock(_mutex);
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for (ObserverList::iterator it = _observers.begin(); it != _observers.end(); ++it)
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{
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if (observer.equals(**it))
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{
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(*it)->disable();
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_observers.erase(it);
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return;
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}
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}
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}
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bool NotificationCenter::hasObserver(const AbstractObserver& observer) const
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{
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Mutex::ScopedLock lock(_mutex);
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for (ObserverList::const_iterator it = _observers.begin(); it != _observers.end(); ++it)
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if (observer.equals(**it)) return true;
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return false;
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}
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void NotificationCenter::postNotification(Notification::Ptr pNotification)
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{
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poco_check_ptr (pNotification);
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ScopedLockWithUnlock<Mutex> lock(_mutex);
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ObserverList observersToNotify(_observers);
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lock.unlock();
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for (ObserverList::iterator it = observersToNotify.begin(); it != observersToNotify.end(); ++it)
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{
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(*it)->notify(pNotification);
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}
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}
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bool NotificationCenter::hasObservers() const
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{
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Mutex::ScopedLock lock(_mutex);
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return !_observers.empty();
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}
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std::size_t NotificationCenter::countObservers() const
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{
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Mutex::ScopedLock lock(_mutex);
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return _observers.size();
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}
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namespace
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{
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static SingletonHolder<NotificationCenter> sh;
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}
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NotificationCenter& NotificationCenter::defaultCenter()
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{
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return *sh.get();
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}
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} // namespace Poco
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