// $Revision: 1.3 $
// Copyright (c) 1994-1995 Taligent, Inc. All Rights Reserved.
// Notification sample 2

#ifndef TaligentSamples_RECEIVER
#include "Receiver.h"
#endif

#ifndef Taligent_ASSERTIONS
#include <Taligent/Assertions.h>
#endif

#ifndef TaligentSamples_LONGNOTIFICATION
#include "LongNotification.h"
#endif

// ========================================================================================

VersionDefinitionsMacro(TReceiver, kOriginalVersion);

TReceiver::TReceiver(TSender* sender)
    : fSender(sender), 
    fConnection(this, &TReceiver::HandleBatchNotification),
    fState(kUnusedState)
{
    Assertion(fSender != NIL, "Must have sender.");

    fConnection.AddInterest(fSender->GetValueChangedInterest(),
         &TReceiver::HandleValueChanged);
    fConnection.SetBatchNotify();
    fConnection.Connect();
}

TReceiver::~TReceiver()
{
}

void TReceiver::HandleValueChanged(const TNotification& notification)
{
    TLongNotification* longNotification = (TLongNotification*)&notification;
    
    if (fState == kUnusedState) {
        fState = longNotification->GetValue();
    }
}

void TReceiver::HandleBatchNotification(const TNotification& notification)
{
    TBatchNotification* batchNotification = (TBatchNotification*)&notification;

    batchNotification->DispatchNotifications();

    qprintf("Value changed from: %d to: %d\n", fState, fSender->GetValue());

    fState = kUnusedState;
}