qqmlnotifier.cpp

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** This file is part of the QtQml module of the Qt Toolkit.
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#include "qqmlnotifier_p.h"
#include "qqmlproperty_p.h"

QT_BEGIN_NAMESPACE

void QQmlNotifier::emitNotify(QQmlNotifierEndpoint *endpoint)
{
    QQmlNotifierEndpoint **oldDisconnected = endpoint->disconnected;
    endpoint->disconnected = &endpoint;
    endpoint->notifying = 1;

    if (endpoint->next)
        emitNotify(endpoint->next);

    if (endpoint) {

        Q_ASSERT(endpoint->callback);
        
        endpoint->callback(endpoint);

        if (endpoint) 
            endpoint->disconnected = oldDisconnected;
    } 

    if (oldDisconnected) *oldDisconnected = endpoint;
    else if (endpoint) endpoint->notifying = 0;
}

void QQmlNotifierEndpoint::connect(QObject *source, int sourceSignal)
{
    disconnect();

    this->source = source;
    this->sourceSignal = sourceSignal;
    QQmlPropertyPrivate::flushSignal(source, sourceSignal);
    QQmlData *ddata = QQmlData::get(source, true);
    ddata->addNotify(sourceSignal, this);
}

void QQmlNotifierEndpoint::copyAndClear(QQmlNotifierEndpoint &other)
{
    if (&other == this)
        return;

    other.disconnect();

    other.callback = callback;

    if (!isConnected())
        return;

    other.notifier = notifier;
    other.sourceSignal = sourceSignal;
    other.disconnected = disconnected;
    other.notifying = notifying;
    if (other.disconnected) *other.disconnected = &other;

    if (next) {
        other.next = next;
        next->prev = &other.next;
    }
    other.prev = prev;
    *other.prev = &other;

    prev = 0;
    next = 0;
    disconnected = 0;
    notifier = 0;
    notifying = 0;
    sourceSignal = -1;
}

QT_END_NAMESPACE