QgsVectorLayerUndoCommandChangeAttribute::QgsVectorLayerUndoCommandChangeAttribute( QgsVectorLayerEditBuffer* buffer, QgsFeatureId fid, int fieldIndex, const QVariant &newValue, const QVariant &oldValue )
: QgsVectorLayerUndoCommand( buffer )
, mFid( fid )
, mFieldIndex( fieldIndex )
, mOldValue( oldValue )
, mNewValue( newValue )
, mFirstChange( true )
{
if ( FID_IS_NEW( mFid ) )
{
// work with added feature
QgsFeatureMap::const_iterator it = mBuffer->mAddedFeatures.constFind( mFid );
Q_ASSERT( it != mBuffer->mAddedFeatures.constEnd() );
if ( it.value().attribute( mFieldIndex ).isValid() )
{
mOldValue = it.value().attribute( mFieldIndex );
mFirstChange = false;
}
}
else if ( mBuffer->mChangedAttributeValues.contains( mFid ) && mBuffer->mChangedAttributeValues[mFid].contains( mFieldIndex ) )
{
mOldValue = mBuffer->mChangedAttributeValues[mFid][mFieldIndex];
mFirstChange = false;
}
}
QgsVectorLayerUndoCommandDeleteFeature::QgsVectorLayerUndoCommandDeleteFeature( QgsVectorLayerEditBuffer* buffer, QgsFeatureId fid )
: QgsVectorLayerUndoCommand( buffer )
{
mFid = fid;
if ( FID_IS_NEW( mFid ) )
{
QgsFeatureMap::const_iterator it = mBuffer->mAddedFeatures.constFind( mFid );
Q_ASSERT( it != mBuffer->mAddedFeatures.constEnd() );
mOldAddedFeature = it.value();
}
}
QgsVectorLayerUndoCommandChangeGeometry::QgsVectorLayerUndoCommandChangeGeometry( QgsVectorLayerEditBuffer *buffer, QgsFeatureId fid, const QgsGeometry &newGeom )
: QgsVectorLayerUndoCommand( buffer )
, mFid( fid )
, mNewGeom( newGeom )
{
if ( FID_IS_NEW( mFid ) )
{
QgsFeatureMap::const_iterator it = mBuffer->mAddedFeatures.constFind( mFid );
Q_ASSERT( it != mBuffer->mAddedFeatures.constEnd() );
mOldGeom = ( it.value().geometry() );
}
else
{
mOldGeom = mBuffer->mChangedGeometries.value( mFid, QgsGeometry() );
}
}
QgsVectorLayerUndoCommandChangeGeometry::QgsVectorLayerUndoCommandChangeGeometry( QgsVectorLayerEditBuffer* buffer, QgsFeatureId fid, const QgsGeometry& newGeom )
: QgsVectorLayerUndoCommand( buffer )
, mFid( fid )
, mNewGeom( newGeom )
{
if ( FID_IS_NEW( mFid ) )
{
QgsFeatureMap::const_iterator it = mBuffer->mAddedFeatures.constFind( mFid );
Q_ASSERT( it != mBuffer->mAddedFeatures.constEnd() );
mOldGeom = ( it.value().geometry() );
}
else
{
bool changedAlready = mBuffer->mChangedGeometries.contains( mFid );
QgsGeometry geom;
bool cachedGeom = cache()->geometry( mFid, geom );
mOldGeom = ( changedAlready && cachedGeom ) ? geom : QgsGeometry();
}
}
QgsVectorLayerUndoCommandDeleteAttribute::QgsVectorLayerUndoCommandDeleteAttribute( QgsVectorLayerEditBuffer* buffer, int fieldIndex )
: QgsVectorLayerUndoCommand( buffer )
, mFieldIndex( fieldIndex )
{
const QgsFields& fields = layer()->fields();
QgsFields::FieldOrigin origin = fields.fieldOrigin( mFieldIndex );
mOriginIndex = fields.fieldOriginIndex( mFieldIndex );
mProviderField = ( origin == QgsFields::OriginProvider );
mFieldName = fields.field( mFieldIndex ).name();
mOldEditorWidgetConfig = mBuffer->L->editFormConfig().widgetConfig( mFieldName );
if ( !mProviderField )
{
// need to store the field definition
mOldField = mBuffer->mAddedAttributes[mOriginIndex];
}
if ( mBuffer->mRenamedAttributes.contains( fieldIndex ) )
{
mOldName = mBuffer->mRenamedAttributes.value( fieldIndex );
}
// save values of new features
for ( QgsFeatureMap::const_iterator it = mBuffer->mAddedFeatures.constBegin(); it != mBuffer->mAddedFeatures.constEnd(); ++it )
{
const QgsFeature& f = it.value();
mDeletedValues.insert( f.id(), f.attribute( mFieldIndex ) );
}
// save changed values
for ( QgsChangedAttributesMap::const_iterator it = mBuffer->mChangedAttributeValues.constBegin(); it != mBuffer->mChangedAttributeValues.constEnd(); ++it )
{
const QgsAttributeMap& attrs = it.value();
if ( attrs.contains( mFieldIndex ) )
mDeletedValues.insert( it.key(), attrs[mFieldIndex] );
}
}