bool QgsGPXProvider::changeAttributeValues( const QgsChangedAttributesMap &attr_map )
{
QgsChangedAttributesMap::const_iterator aIter = attr_map.begin();
if ( mFeatureType == WaypointType )
{
QgsGPSData::WaypointIterator wIter = data->waypointsBegin();
for ( ; wIter != data->waypointsEnd() && aIter != attr_map.end(); ++wIter )
{
if ( wIter->id == aIter.key() )
{
changeAttributeValues( *wIter, aIter.value() );
++aIter;
}
}
}
else if ( mFeatureType == RouteType )
{
QgsGPSData::RouteIterator rIter = data->routesBegin();
for ( ; rIter != data->routesEnd() && aIter != attr_map.end(); ++rIter )
{
if ( rIter->id == aIter.key() )
{
changeAttributeValues( *rIter, aIter.value() );
++aIter;
}
}
}
if ( mFeatureType == TrackType )
{
QgsGPSData::TrackIterator tIter = data->tracksBegin();
for ( ; tIter != data->tracksEnd() && aIter != attr_map.end(); ++tIter )
{
if ( tIter->id == aIter.key() )
{
changeAttributeValues( *tIter, aIter.value() );
++aIter;
}
}
}
// write back to file
QFile file( mFileName );
if ( !file.open( QIODevice::WriteOnly ) )
return false;
QTextStream ostr( &file );
data->writeXML( ostr );
return true;
}
bool QgsVectorDataProvider::changeFeatures( const QgsChangedAttributesMap &attr_map,
const QgsGeometryMap &geometry_map )
{
if ( !( capabilities() & ChangeAttributeValues ) || !( capabilities() & ChangeGeometries ) )
return false;
bool result = true;
result = result && changeAttributeValues( attr_map );
result = result && changeGeometryValues( geometry_map );
return result;
}
