/*!
Set the signal expression associated with this signal property to \a expr.
Returns the existing signal expression (if any), otherwise 0.
Ownership of \a expr transfers to QML. Ownership of the return value is
assumed by the caller.
*/
QDeclarativeExpression *
QDeclarativePropertyPrivate::setSignalExpression(const QDeclarativeProperty &that,
QDeclarativeExpression *expr)
{
if (!(that.type() & QDeclarativeProperty::SignalProperty)) {
delete expr;
return 0;
}
const QObjectList &children = that.d->object->children();
for (int ii = 0; ii < children.count(); ++ii) {
QObject *child = children.at(ii);
QDeclarativeBoundSignal *signal = QDeclarativeBoundSignal::cast(child);
if (signal && signal->index() == that.index())
return signal->setExpression(expr);
}
if (expr) {
QDeclarativeBoundSignal *signal = new QDeclarativeBoundSignal(that.d->object, that.method(), that.d->object);
return signal->setExpression(expr);
} else {
return 0;
}
}
/*!
Returns the expression associated with this signal property, or 0 if no
signal expression exists.
*/
QDeclarativeExpression *
QDeclarativePropertyPrivate::signalExpression(const QDeclarativeProperty &that)
{
if (!(that.type() & QDeclarativeProperty::SignalProperty))
return 0;
const QObjectList &children = that.d->object->children();
for (int ii = 0; ii < children.count(); ++ii) {
QObject *child = children.at(ii);
QDeclarativeBoundSignal *signal = QDeclarativeBoundSignal::cast(child);
if (signal && signal->index() == that.index())
return signal->expression();
}
return 0;
}