metadatabinding.cpp Example File

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 #include "metadatabinding.h"

 #include <qgalleryresultset.h>

 MetaDataBinding::MetaDataBinding(
         QObject *object,
         const char *objectProperty,
         QGalleryResultSet *resultSet,
         const QString &resultSetProperty,
         QObject *parent)
     : QObject(parent)
     , object(object)
     , property(objectProperty)
     , resultSet(resultSet)
     , resultSetPropertyKey(resultSet->propertyKey(resultSetProperty))
 {
     connect(resultSet, SIGNAL(currentItemChanged()), this, SLOT(itemChanged()));
     connect(resultSet, SIGNAL(metaDataChanged(int,int,QList<int>)),
             this, SLOT(metaDataChanged(int,int,QList<int>)));

     if (resultSet->isValid())
         itemChanged();
 }

 MetaDataBinding::~MetaDataBinding()
 {
 }

 void MetaDataBinding::itemChanged()
 {
     if (object)
         object->setProperty(property.constData(), resultSet->metaData(resultSetPropertyKey));
 }

 void MetaDataBinding::metaDataChanged(int index, int count, const QList<int> &keys)
 {
     if (resultSet->currentIndex() >= index
             && resultSet->currentIndex() < index + count
             && keys.contains(resultSetPropertyKey)) {
         object->setProperty(property.constData(), resultSet->metaData(resultSetPropertyKey));
     }
 }

 void MetaDataBinding::propertyChanged()
 {
     if (resultSet)
         resultSet->setMetaData(resultSetPropertyKey, object->property(property.constData()));
 }