qsignaltransition.cpp

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#include "qsignaltransition.h"

#ifndef QT_NO_STATEMACHINE

#include "qsignaltransition_p.h"
#include "qstate.h"
#include "qstate_p.h"
#include "qstatemachine.h"
#include "qstatemachine_p.h"
#include <qdebug.h>

QT_BEGIN_NAMESPACE

QSignalTransitionPrivate::QSignalTransitionPrivate()
{
    sender = 0;
    signalIndex = -1;
}

QSignalTransitionPrivate *QSignalTransitionPrivate::get(QSignalTransition *q)
{
    return q->d_func();
}

void QSignalTransitionPrivate::unregister()
{
    Q_Q(QSignalTransition);
    if ((signalIndex == -1) || !machine())
        return;
    QStateMachinePrivate::get(machine())->unregisterSignalTransition(q);
}

void QSignalTransitionPrivate::maybeRegister()
{
    Q_Q(QSignalTransition);
    if (!machine() || !machine()->configuration().contains(sourceState()))
        return;
    QStateMachinePrivate::get(machine())->registerSignalTransition(q);
}

QSignalTransition::QSignalTransition(QState *sourceState)
    : QAbstractTransition(*new QSignalTransitionPrivate, sourceState)
{
}

QSignalTransition::QSignalTransition(QObject *sender, const char *signal,
                                     QState *sourceState)
    : QAbstractTransition(*new QSignalTransitionPrivate, sourceState)
{
    Q_D(QSignalTransition);
    d->sender = sender;
    d->signal = signal;
}

QSignalTransition::~QSignalTransition()
{
}

QObject *QSignalTransition::senderObject() const
{
    Q_D(const QSignalTransition);
    return d->sender;
}

void QSignalTransition::setSenderObject(QObject *sender)
{
    Q_D(QSignalTransition);
    if (sender == d->sender)
        return;
    d->unregister();
    d->sender = sender;
    d->maybeRegister();
}

QByteArray QSignalTransition::signal() const
{
    Q_D(const QSignalTransition);
    return d->signal;
}

void QSignalTransition::setSignal(const QByteArray &signal)
{
    Q_D(QSignalTransition);
    if (signal == d->signal)
        return;
    d->unregister();
    d->signal = signal;
    d->maybeRegister();
}

bool QSignalTransition::eventTest(QEvent *event)
{
    Q_D(const QSignalTransition);
    if (event->type() == QEvent::StateMachineSignal) {
        if (d->signalIndex == -1)
            return false;
        QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(event);
        return (se->sender() == d->sender)
            && (se->signalIndex() == d->signalIndex);
    }
    return false;
}

void QSignalTransition::onTransition(QEvent *event)
{
    Q_UNUSED(event);
}

bool QSignalTransition::event(QEvent *e)
{
    return QAbstractTransition::event(e);
}

void QSignalTransitionPrivate::callOnTransition(QEvent *e)
{
    Q_Q(QSignalTransition);

    if (e->type() == QEvent::StateMachineSignal) {
        QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent *>(e);
        int savedSignalIndex = se->m_signalIndex;
        se->m_signalIndex = originalSignalIndex;
        q->onTransition(e);
        se->m_signalIndex = savedSignalIndex;
    } else {
        q->onTransition(e);
    }
}

QT_END_NAMESPACE

#endif //QT_NO_STATEMACHINE