* Copyright 2006-2007, Haiku.
* Distributed under the terms of the MIT License.
*
* Authors:
* Stephan Aßmus <superstippi@gmx.de>
*/
#ifndef NOTIFIER_H
#define NOTIFIER_H
#include <List.h>
class Listener;
class Notifier {
public:
Notifier();
virtual ~Notifier();
bool AddListener(Listener* listener);
bool RemoveListener(Listener* listener);
int32 CountListeners() const;
Listener* ListenerAtFast(int32 index) const;
void Notify() const;
void SuspendNotifications(bool suspend);
bool HasPendingNotifications() const
{ return fPendingNotifications; }
private:
BList fListeners;
int32 fSuspended;
mutable bool fPendingNotifications;
};
class AutoNotificationSuspender {
public:
AutoNotificationSuspender(Notifier* object)
: fObject(object)
{
fObject->SuspendNotifications(true);
}
virtual ~AutoNotificationSuspender()
{
fObject->SuspendNotifications(false);
}
private:
Notifier* fObject;
};
#endif
