2006-10-23 17:48:43 +02:00
|
|
|
//
|
|
|
|
// NotificationCenter.cpp
|
|
|
|
//
|
2006-12-22 10:31:08 +01:00
|
|
|
// $Id: //poco/Main/Foundation/src/NotificationCenter.cpp#12 $
|
2006-10-23 17:48:43 +02:00
|
|
|
//
|
|
|
|
// Library: Foundation
|
|
|
|
// Package: Notifications
|
|
|
|
// Module: NotificationCenter
|
|
|
|
//
|
|
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
|
|
// and Contributors.
|
|
|
|
//
|
|
|
|
// Permission is hereby granted, free of charge, to any person or organization
|
|
|
|
// obtaining a copy of the software and accompanying documentation covered by
|
|
|
|
// this license (the "Software") to use, reproduce, display, distribute,
|
|
|
|
// execute, and transmit the Software, and to prepare derivative works of the
|
|
|
|
// Software, and to permit third-parties to whom the Software is furnished to
|
|
|
|
// do so, all subject to the following:
|
|
|
|
//
|
|
|
|
// The copyright notices in the Software and this entire statement, including
|
|
|
|
// the above license grant, this restriction and the following disclaimer,
|
|
|
|
// must be included in all copies of the Software, in whole or in part, and
|
|
|
|
// all derivative works of the Software, unless such copies or derivative
|
|
|
|
// works are solely in the form of machine-executable object code generated by
|
|
|
|
// a source language processor.
|
|
|
|
//
|
|
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
|
|
|
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
|
|
|
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
|
|
|
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
|
|
// DEALINGS IN THE SOFTWARE.
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
|
|
#include "Poco/NotificationCenter.h"
|
|
|
|
#include "Poco/Notification.h"
|
|
|
|
#include "Poco/Observer.h"
|
|
|
|
#include "Poco/AutoPtr.h"
|
|
|
|
#include "Poco/SingletonHolder.h"
|
|
|
|
|
|
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
|
|
|
|
|
|
NotificationCenter::NotificationCenter()
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
NotificationCenter::~NotificationCenter()
|
|
|
|
{
|
|
|
|
for (ObserverList::iterator it = _observers.begin(); it != _observers.end(); ++it)
|
|
|
|
{
|
|
|
|
delete *it;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void NotificationCenter::addObserver(const AbstractObserver& observer)
|
|
|
|
{
|
|
|
|
Mutex::ScopedLock lock(_mutex);
|
|
|
|
_observers.push_front(observer.clone());
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void NotificationCenter::removeObserver(const AbstractObserver& observer)
|
|
|
|
{
|
|
|
|
Mutex::ScopedLock lock(_mutex);
|
|
|
|
for (ObserverList::iterator it = _observers.begin(); it != _observers.end(); ++it)
|
|
|
|
{
|
|
|
|
if (*it && observer.equals(**it))
|
|
|
|
{
|
|
|
|
delete *it;
|
|
|
|
*it = 0;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void NotificationCenter::postNotification(Notification* pNotification)
|
|
|
|
{
|
|
|
|
poco_check_ptr (pNotification);
|
|
|
|
|
|
|
|
Mutex::ScopedLock lock(_mutex);
|
|
|
|
AutoPtr<Notification> pNf = pNotification;
|
|
|
|
ObserverList::iterator it = _observers.begin();
|
|
|
|
while (it != _observers.end())
|
|
|
|
{
|
|
|
|
ObserverList::iterator cur = it++;
|
|
|
|
if (*cur)
|
|
|
|
{
|
|
|
|
(*cur)->notify(pNotification);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
_observers.erase(cur);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool NotificationCenter::hasObservers() const
|
|
|
|
{
|
|
|
|
Mutex::ScopedLock lock(_mutex);
|
|
|
|
|
|
|
|
ObserverList::const_iterator it = _observers.begin();
|
|
|
|
while (it != _observers.end())
|
|
|
|
{
|
|
|
|
if (*it) return true;
|
|
|
|
++it;
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
NotificationCenter& NotificationCenter::defaultCenter()
|
|
|
|
{
|
|
|
|
static SingletonHolder<NotificationCenter> sh;
|
|
|
|
return *sh.get();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
} // namespace Poco
|