source: source/ariba/utility/system/SystemEvent.h @ 7463

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// [License]

#ifndef SYSTEMEVENT_H_
#define SYSTEMEVENT_H_

#include <boost/date_time.hpp>
#include <iostream>
#include "SystemEventType.h"

using boost::posix_time::ptime;

namespace ariba {
namespace utility {

class SystemQueue;
class SystemEventListener;

class SystemEvent {
        friend class SystemQueue;
private:
        SystemEventListener* listener; //< handler of the event
        SystemEventType type; //< type of the event
        const void* data; //< data attached to the event

public:
        // TODO: these should be private, but the gcc 3.4 in scratchbox for cross-compiling
        // for Maemo (Nokia N810) gets confused when the friend class SystemQueue has a 
        // private class that accesses these variables. Therefore they are public for now.
        ptime scheduledTime; //< time the event was originally given to the queue
        uint32_t delayTime; //< time the event is scheduled at, or 0 if it is to be fired immediately
        uint32_t remainingDelay; //< remaining delay time for sleeping

public:
        inline SystemEvent(SystemEventListener* mlistener, SystemEventType mtype =
                        SystemEventType::DEFAULT, void* mdata = NULL) :
                listener(mlistener), type(mtype), data(mdata), scheduledTime(
                                boost::posix_time::not_a_date_time), delayTime(0),
                                remainingDelay(0)

        {
        }

        template<typename T>
        inline SystemEvent(SystemEventListener* mlistener, SystemEventType mtype =
                        SystemEventType::DEFAULT, T* mdata = NULL) :
                listener(mlistener), type(mtype), data((void*) mdata), scheduledTime(
                                boost::posix_time::not_a_date_time), delayTime(0),
                                remainingDelay(0) {
        }

        inline SystemEvent(const SystemEvent& copy) {
                this->scheduledTime = copy.scheduledTime;
                this->delayTime = copy.delayTime;
                this->remainingDelay = copy.remainingDelay;
                this->listener = copy.listener;
                this->type = copy.type;
                this->data = copy.data;
        }

        inline void operator=(const SystemEvent& right) {
                this->scheduledTime = right.scheduledTime;
                this->delayTime = right.delayTime;
                this->remainingDelay = right.remainingDelay;
                this->listener = right.listener;
                this->type = right.type;
                this->data = right.data;
        }

        inline ~SystemEvent() {
        }

        template<typename T>
        inline operator T() const {
                return (T) (data);
        }

        inline SystemEventListener* getListener() const {
                return listener;
        }

        template<typename T>
        inline T* getData() const {
                return (T*) *this;
        }

        inline const SystemEventType getType() const {
                return type;
        }

        inline const ptime getScheduledTime() const {
                return scheduledTime;
        }

        inline const uint32_t getRemainingDelay() const {
                return remainingDelay;
        }

        inline bool operator<(const SystemEvent& right) const {
                return remainingDelay < right.remainingDelay;
        }

};

}
} // spovnet, common

#endif /* SYSTEMEVENT_H_ */