mythobservable.h

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#ifndef MYTHOBSERVABLE_H_
#define MYTHOBSERVABLE_H_
 
#include <QSet>
#include "mythevent.h"
#include "mythbaseexp.h"
 
class QObject;
class QMutex;
 
class MBASE_PUBLIC MythObservable
{
  public:
    MythObservable()
        : m_lock(new QMutex()) {}
    virtual ~MythObservable();
 
    void addListener(QObject *listener);
    void removeListener(QObject *listener);
 
    void dispatch(const MythEvent &event);
 
    bool hasListeners(void) { return !m_listeners.isEmpty(); }
 
  private:
    Q_DISABLE_COPY_MOVE(MythObservable)
 
  protected:
    QMutex         *m_lock {nullptr};
    QSet<QObject*>  m_listeners;
};
 
#endif /* MYTHOBSERVABLE_H */