qeventtransition.cpp

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#include "qeventtransition.h"

#ifndef QT_NO_STATEMACHINE

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

QT_BEGIN_NAMESPACE

QEventTransitionPrivate::QEventTransitionPrivate()
{
    object = 0;
    eventType = QEvent::None;
    registered = false;
}

QEventTransitionPrivate *QEventTransitionPrivate::get(QEventTransition *q)
{
    return q->d_func();
}

void QEventTransitionPrivate::unregister()
{
    Q_Q(QEventTransition);
    if (!registered || !machine())
        return;
    QStateMachinePrivate::get(machine())->unregisterEventTransition(q);
}

void QEventTransitionPrivate::maybeRegister()
{
    Q_Q(QEventTransition);
    if (!machine() || !machine()->configuration().contains(sourceState()))
        return;
    QStateMachinePrivate::get(machine())->registerEventTransition(q);
}

QEventTransition::QEventTransition(QState *sourceState)
    : QAbstractTransition(*new QEventTransitionPrivate, sourceState)
{
}

QEventTransition::QEventTransition(QObject *object, QEvent::Type type,
                                   QState *sourceState)
    : QAbstractTransition(*new QEventTransitionPrivate, sourceState)
{
    Q_D(QEventTransition);
    d->registered = false;
    d->object = object;
    d->eventType = type;
}

QEventTransition::QEventTransition(QEventTransitionPrivate &dd, QState *parent)
    : QAbstractTransition(dd, parent)
{
}

QEventTransition::QEventTransition(QEventTransitionPrivate &dd, QObject *object,
                                   QEvent::Type type, QState *parent)
    : QAbstractTransition(dd, parent)
{
    Q_D(QEventTransition);
    d->registered = false;
    d->object = object;
    d->eventType = type;
}

QEventTransition::~QEventTransition()
{
}

QEvent::Type QEventTransition::eventType() const
{
    Q_D(const QEventTransition);
    return d->eventType;
}

void QEventTransition::setEventType(QEvent::Type type)
{
    Q_D(QEventTransition);
    if (d->eventType == type)
        return;
    d->unregister();
    d->eventType = type;
    d->maybeRegister();
}

QObject *QEventTransition::eventSource() const
{
    Q_D(const QEventTransition);
    return d->object;
}

void QEventTransition::setEventSource(QObject *object)
{
    Q_D(QEventTransition);
    if (d->object == object)
        return;
    d->unregister();
    d->object = object;
    d->maybeRegister();
}

bool QEventTransition::eventTest(QEvent *event)
{
    Q_D(const QEventTransition);
    if (event->type() == QEvent::StateMachineWrapped) {
        QStateMachine::WrappedEvent *we = static_cast<QStateMachine::WrappedEvent*>(event);
        return (we->object() == d->object)
            && (we->event()->type() == d->eventType);
    }
    return false;
}

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

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

QT_END_NAMESPACE

#endif //QT_NO_STATEMACHINE