QValueSpacePublisherPrivate::QValueSpacePublisherPrivate(const QString &_path,
QValueSpace::LayerOptions filter)
: layer(0), handle(QAbstractValueSpaceLayer::InvalidHandle), hasSet(false), hasWatch(false)
{
path = qCanonicalPath(_path);
if ((filter & QValueSpace::PermanentLayer &&
filter & QValueSpace::TransientLayer) ||
(filter & QValueSpace::WritableLayer &&
filter & QValueSpace::ReadOnlyLayer)) {
return;
}
QList<QAbstractValueSpaceLayer *> layers = QValueSpaceManager::instance()->getLayers();
for (int ii = 0; ii < layers.count(); ++ii) {
if (filter == QValueSpace::UnspecifiedLayer ||
layers.at(ii)->layerOptions() & filter) {
QAbstractValueSpaceLayer::Handle h =
layers.at(ii)->item(QAbstractValueSpaceLayer::InvalidHandle, path);
if (h != QAbstractValueSpaceLayer::InvalidHandle) {
layer = layers.at(ii);
handle = h;
break;
}
}
}
}
QValueSpacePublisherPrivate::QValueSpacePublisherPrivate(const QString &_path,
QValueSpace::LayerOptions filter)
: layer(0), handle(QAbstractValueSpaceLayer::InvalidHandle), hasSet(false), hasWatch(false)
{
path = qCanonicalPath(_path);
#ifdef QT_SIMULATOR
originalPath = path;
path = qAddSimulatorPrefix(path);
#endif
// check filter for mutually exclusive options
if ((filter & QValueSpace::PermanentLayer &&
filter & QValueSpace::TransientLayer) ||
(filter & QValueSpace::WritableLayer &&
filter & QValueSpace::ReadOnlyLayer)) {
return;
}
QList<QAbstractValueSpaceLayer *> layers = QValueSpaceManager::instance()->getLayers();
for (int ii = 0; ii < layers.count(); ++ii) {
if ((layers.at(ii)->layerOptions() & filter) == filter) {
QAbstractValueSpaceLayer::Handle h =
layers.at(ii)->item(QAbstractValueSpaceLayer::InvalidHandle, path);
if (h != QAbstractValueSpaceLayer::InvalidHandle) {
layer = layers.at(ii);
handle = h;
break;
}
}
}
}
/*!
Removes the value \a name and all sub-attributes from the system.
For example:
\code
QValueSpacePublisher publisher("/Device");
publisher.setValue("State", "Starting");
publisher.setValue("State/Memory", "1000");
publisher.sync();
// QValueSpaceSubscriber("/Device/State").value() == QVariant("Starting")
// QValueSpaceSubscriber("/Device/State/Memory").value() == QVariant("1000")
publisher.resetValue("State");
publisher.sync();
// QValueSpaceSubscriber("/Device/State").value() == QVariant();
// QValueSpaceSubscriber("/Device/State/Memory").value() == QVariant();
\endcode
*/
void QValueSpacePublisher::resetValue(const QString &name)
{
if (!isConnected()) {
qWarning("removeAttribute called on unconnected QValueSpacePublisher.");
return;
}
d->layer->removeValue(this, d->handle, qCanonicalPath(name));
}
/*!
Sets the value \a name on the publisher to \a data. If name is empty, this call will set the
value of this publisher's path.
For example:
\code
QValueSpacePublisher publisher("/Device");
publisher.setValue("State", "Starting");
publisher.sync();
// QValueSpaceSubscriber("/Device/State").value() == QVariant("Starting")
\endcode
*/
void QValueSpacePublisher::setValue(const QString &name, const QVariant &data)
{
if (!isConnected()) {
qWarning("setAttribute called on unconnected QValueSpacePublisher.");
return;
}
d->hasSet = true;
d->layer->setValue(this, d->handle, qCanonicalPath(name), data);
}
QValueSpacePublisherPrivate::QValueSpacePublisherPrivate(const QString &_path, const QUuid &uuid)
: layer(0), handle(QAbstractValueSpaceLayer::InvalidHandle), hasSet(false), hasWatch(false)
{
path = qCanonicalPath(_path);
QList<QAbstractValueSpaceLayer *> layers = QValueSpaceManager::instance()->getLayers();
for (int ii = 0; ii < layers.count(); ++ii) {
if (layers.at(ii)->id() == uuid) {
layer = layers.at(ii);
handle = layer->item(QAbstractValueSpaceLayer::InvalidHandle, path);
break;
}
}
}