QgsAttributeTableModel::QgsAttributeTableModel( QgsVectorLayerCache *layerCache, QObject *parent )
: QAbstractTableModel( parent )
, mLayerCache( layerCache )
, mCachedField( -1 )
{
QgsDebugMsg( "entered." );
if ( layerCache->layer()->geometryType() == QGis::NoGeometry )
{
mFeatureRequest.setFlags( QgsFeatureRequest::NoGeometry );
}
mFeat.setFeatureId( std::numeric_limits<int>::min() );
if ( !layer()->hasGeometryType() )
mFeatureRequest.setFlags( QgsFeatureRequest::NoGeometry );
loadAttributes();
connect( mLayerCache, SIGNAL( attributeValueChanged( QgsFeatureId, int, const QVariant& ) ), this, SLOT( attributeValueChanged( QgsFeatureId, int, const QVariant& ) ) );
connect( layer(), SIGNAL( featureDeleted( QgsFeatureId ) ), this, SLOT( featureDeleted( QgsFeatureId ) ) );
connect( layer(), SIGNAL( attributeDeleted( int ) ), this, SLOT( attributeDeleted( int ) ) );
connect( layer(), SIGNAL( updatedFields() ), this, SLOT( updatedFields() ) );
connect( layer(), SIGNAL( editCommandEnded() ), this, SLOT( editCommandEnded() ) );
connect( mLayerCache, SIGNAL( featureAdded( QgsFeatureId ) ), this, SLOT( featureAdded( QgsFeatureId ) ) );
connect( mLayerCache, SIGNAL( cachedLayerDeleted() ), this, SLOT( layerDeleted() ) );
}
void QgsSelectedFeature::setSelectedFeature( QgsFeatureId featureId, QgsVectorLayer* vlayer, QgsMapCanvas* canvas )
{
mFeatureId = featureId;
mVlayer = vlayer;
mCanvas = canvas;
delete mRubberBand;
mRubberBand = 0;
delete mGeometry;
mGeometry = 0;
// signal changing of current layer
connect( QgisApp::instance()->legend(), SIGNAL( currentLayerChanged( QgsMapLayer* ) ), this, SLOT( currentLayerChanged( QgsMapLayer* ) ) );
// feature was deleted
connect( mVlayer, SIGNAL( featureDeleted( QgsFeatureId ) ), this, SLOT( featureDeleted( QgsFeatureId ) ) );
// projection or extents changed
connect( canvas->mapRenderer(), SIGNAL( destinationSrsChanged() ), this, SLOT( updateVertexMarkersPosition() ) );
connect( canvas, SIGNAL( extentsChanged() ), this, SLOT( updateVertexMarkersPosition() ) );
// geometry was changed
connect( mVlayer, SIGNAL( geometryChanged( QgsFeatureId, QgsGeometry & ) ), this, SLOT( geometryChanged( QgsFeatureId, QgsGeometry & ) ) );
replaceVertexMap();
}
void QgsSelectedFeature::setSelectedFeature( QgsFeatureId featureId, QgsVectorLayer* vlayer, QgsMapCanvas* canvas )
{
mFeatureId = featureId;
mVlayer = vlayer;
mCanvas = canvas;
delete mGeometry;
mGeometry = nullptr;
// signal changing of current layer
connect( QgisApp::instance()->layerTreeView(), SIGNAL( currentLayerChanged( QgsMapLayer* ) ), this, SLOT( currentLayerChanged( QgsMapLayer* ) ) );
// feature was deleted
connect( mVlayer, SIGNAL( featureDeleted( QgsFeatureId ) ), this, SLOT( featureDeleted( QgsFeatureId ) ) );
// rolling back
connect( mVlayer, SIGNAL( beforeRollBack() ), this, SLOT( beforeRollBack() ) );
// projection or extents changed
connect( canvas, SIGNAL( destinationCrsChanged() ), this, SLOT( updateVertexMarkersPosition() ) );
connect( canvas, SIGNAL( extentsChanged() ), this, SLOT( updateVertexMarkersPosition() ) );
// geometry was changed
connect( mVlayer, SIGNAL( geometryChanged( QgsFeatureId, QgsGeometry & ) ), this, SLOT( geometryChanged( QgsFeatureId, QgsGeometry & ) ) );
replaceVertexMap();
}
bool QgsVirtualLayerProvider::loadSourceLayers()
{
Q_FOREACH ( const QgsVirtualLayerDefinition::SourceLayer &layer, mDefinition.sourceLayers() )
{
if ( layer.isReferenced() )
{
QgsMapLayer *l = QgsMapLayerRegistry::instance()->mapLayer( layer.reference() );
if ( !l )
{
PROVIDER_ERROR( QString( "Cannot find layer %1" ).arg( layer.reference() ) );
return false;
}
if ( l->type() != QgsMapLayer::VectorLayer )
{
PROVIDER_ERROR( QString( "Layer %1 is not a vector layer" ).arg( layer.reference() ) );
return false;
}
// add the layer to the list
QgsVectorLayer* vl = static_cast<QgsVectorLayer*>( l );
mLayers << SourceLayer( vl, layer.name() );
// connect to modification signals to invalidate statistics
connect( vl, SIGNAL( featureAdded( QgsFeatureId ) ), this, SLOT( invalidateStatistics() ) );
connect( vl, SIGNAL( featureDeleted( QgsFeatureId ) ), this, SLOT( invalidateStatistics() ) );
connect( vl, SIGNAL( geometryChanged( QgsFeatureId, const QgsGeometry& ) ), this, SLOT( invalidateStatistics() ) );
}
else
{
void FeatureListModel::setFeatures( const QList<QgsMapToolIdentify::IdentifyResult>& results )
{
beginResetModel();
qDeleteAll( mFeatures );
mFeatures.clear();
disconnect( this, SLOT( layerDeleted() ) );
Q_FOREACH( const QgsMapToolIdentify::IdentifyResult& res, results )
{
Feature* f = new Feature( res.mFeature, qobject_cast<QgsVectorLayer*>( res.mLayer ) );
mFeatures.append( f );
connect( f->layer(), SIGNAL( layerDeleted() ), this, SLOT( layerDeleted() ), Qt::UniqueConnection );
connect( f->layer(), SIGNAL( featureDeleted( QgsFeatureId ) ), this, SLOT( featureDeleted( QgsFeatureId ) ), Qt::UniqueConnection );
}
void QgsIdentifyResultsDialog::addFeature( QgsVectorLayer *vlayer, const QgsFeature &f, const QMap<QString, QString> &derivedAttributes )
{
QTreeWidgetItem *layItem = layerItem( vlayer );
if ( layItem == 0 )
{
layItem = new QTreeWidgetItem( QStringList() << QString::number( lstResults->topLevelItemCount() ) << vlayer->name() );
layItem->setData( 0, Qt::UserRole, QVariant::fromValue( qobject_cast<QObject *>( vlayer ) ) );
lstResults->addTopLevelItem( layItem );
connect( vlayer, SIGNAL( layerDeleted() ), this, SLOT( layerDestroyed() ) );
connect( vlayer, SIGNAL( layerCrsChanged() ), this, SLOT( layerDestroyed() ) );
connect( vlayer, SIGNAL( featureDeleted( QgsFeatureId ) ), this, SLOT( featureDeleted( QgsFeatureId ) ) );
connect( vlayer, SIGNAL( attributeValueChanged( QgsFeatureId, int, const QVariant & ) ),
this, SLOT( attributeValueChanged( QgsFeatureId, int, const QVariant & ) ) );
connect( vlayer, SIGNAL( editingStarted() ), this, SLOT( editingToggled() ) );
connect( vlayer, SIGNAL( editingStopped() ), this, SLOT( editingToggled() ) );
}
void QgsAttributeTableModel::attributeValueChanged( QgsFeatureId fid, int idx, const QVariant &value )
{
QgsDebugMsgLevel( QString( "(%4) fid: %1, idx: %2, value: %3" ).arg( fid ).arg( idx ).arg( value.toString() ).arg( mFeatureRequest.filterType() ), 3 );
// No filter request: skip all possibly heavy checks
if ( mFeatureRequest.filterType() == QgsFeatureRequest::FilterNone )
{
setData( index( idToRow( fid ), fieldCol( idx ) ), value, Qt::EditRole );
}
else
{
if ( loadFeatureAtId( fid ) )
{
if ( mFeatureRequest.acceptFeature( mFeat ) )
{
if ( !mIdRowMap.contains( fid ) )
{
// Feature changed in such a way, it will be shown now
featureAdded( fid );
}
else
{
if ( idx == mCachedField )
mFieldCache[ fid ] = value;
// Update representation
setData( index( idToRow( fid ), fieldCol( idx ) ), value, Qt::EditRole );
}
}
else
{
if ( mIdRowMap.contains( fid ) )
{
// Feature changed such, that it is no longer shown
featureDeleted( fid );
}
// else: we don't care
}
}
}
}
bool QgsVectorLayerEditBuffer::commitChanges( QStringList& commitErrors )
{
QgsVectorDataProvider* provider = L->dataProvider();
commitErrors.clear();
int cap = provider->capabilities();
bool success = true;
QgsFields oldFields = L->pendingFields();
//
// delete attributes
//
bool attributesChanged = false;
if ( !mDeletedAttributeIds.isEmpty() )
{
if (( cap & QgsVectorDataProvider::DeleteAttributes ) && provider->deleteAttributes( mDeletedAttributeIds.toSet() ) )
{
commitErrors << tr( "SUCCESS: %n attribute(s) deleted.", "deleted attributes count", mDeletedAttributeIds.size() );
emit committedAttributesDeleted( L->id(), mDeletedAttributeIds );
mDeletedAttributeIds.clear();
attributesChanged = true;
}
else
{
commitErrors << tr( "ERROR: %n attribute(s) not deleted.", "not deleted attributes count", mDeletedAttributeIds.size() );
success = false;
}
}
//
// add attributes
//
if ( !mAddedAttributes.isEmpty() )
{
if (( cap & QgsVectorDataProvider::AddAttributes ) && provider->addAttributes( mAddedAttributes ) )
{
commitErrors << tr( "SUCCESS: %n attribute(s) added.", "added attributes count", mAddedAttributes.size() );
emit committedAttributesAdded( L->id(), mAddedAttributes );
mAddedAttributes.clear();
attributesChanged = true;
}
else
{
commitErrors << tr( "ERROR: %n new attribute(s) not added", "not added attributes count", mAddedAttributes.size() );
success = false;
}
}
//
// check that addition/removal went as expected
//
bool attributeChangesOk = true;
if ( attributesChanged )
{
L->updateFields();
QgsFields newFields = L->pendingFields();
if ( oldFields.count() != newFields.count() )
{
commitErrors << tr( "ERROR: the count of fields is incorrect after addition/removal of fields!" );
attributeChangesOk = false; // don't try attribute updates - they'll fail.
}
for ( int i = 0; i < oldFields.count(); ++i )
{
const QgsField& oldField = oldFields[i];
const QgsField& newField = newFields[i];
if ( attributeChangesOk && oldField != newField )
{
commitErrors << tr( "ERROR: field with index %1 is not the same!" ).arg( i );
attributeChangesOk = false; // don't try attribute updates - they'll fail.
}
}
}
if ( attributeChangesOk )
{
//
// change attributes
//
if ( !mChangedAttributeValues.isEmpty() )
{
if (( cap & QgsVectorDataProvider::ChangeAttributeValues ) && provider->changeAttributeValues( mChangedAttributeValues ) )
{
commitErrors << tr( "SUCCESS: %n attribute value(s) changed.", "changed attribute values count", mChangedAttributeValues.size() );
emit committedAttributeValuesChanges( L->id(), mChangedAttributeValues );
mChangedAttributeValues.clear();
}
else
{
commitErrors << tr( "ERROR: %n attribute value change(s) not applied.", "not changed attribute values count", mChangedAttributeValues.size() );
success = false;
}
}
//
// delete features
//
if ( !mDeletedFeatureIds.isEmpty() )
{
if (( cap & QgsVectorDataProvider::DeleteFeatures ) && provider->deleteFeatures( mDeletedFeatureIds ) )
{
commitErrors << tr( "SUCCESS: %n feature(s) deleted.", "deleted features count", mDeletedFeatureIds.size() );
// TODO[MD]: we should not need this here
for ( QgsFeatureIds::const_iterator it = mDeletedFeatureIds.begin(); it != mDeletedFeatureIds.end(); it++ )
{
mChangedAttributeValues.remove( *it );
mChangedGeometries.remove( *it );
}
emit committedFeaturesRemoved( L->id(), mDeletedFeatureIds );
mDeletedFeatureIds.clear();
}
else
{
commitErrors << tr( "ERROR: %n feature(s) not deleted.", "not deleted features count", mDeletedFeatureIds.size() );
success = false;
}
}
//
// add features
//
if ( !mAddedFeatures.isEmpty() )
{
if ( cap & QgsVectorDataProvider::AddFeatures )
{
QList<QgsFeatureId> ids = mAddedFeatures.keys();
QgsFeatureList featuresToAdd = mAddedFeatures.values();
if ( provider->addFeatures( featuresToAdd ) )
{
commitErrors << tr( "SUCCESS: %n feature(s) added.", "added features count", featuresToAdd.size() );
emit committedFeaturesAdded( L->id(), featuresToAdd );
// notify everyone that the features with temporary ids were updated with permanent ids
for ( int i = 0; i < featuresToAdd.count(); ++i )
{
if ( featuresToAdd[i].id() != ids[i] )
{
emit featureDeleted( ids[i] );
emit featureAdded( featuresToAdd[i].id() );
}
}
mAddedFeatures.clear();
}
else
{
commitErrors << tr( "ERROR: %n feature(s) not added.", "not added features count", mAddedFeatures.size() );
success = false;
}
}
else
{
commitErrors << tr( "ERROR: %n feature(s) not added - provider doesn't support adding features.", "not added features count", mAddedFeatures.size() );
success = false;
}
}
}
//
// update geometries
//
if ( !mChangedGeometries.isEmpty() )
{
if (( cap & QgsVectorDataProvider::ChangeGeometries ) && provider->changeGeometryValues( mChangedGeometries ) )
{
commitErrors << tr( "SUCCESS: %n geometries were changed.", "changed geometries count", mChangedGeometries.size() );
emit committedGeometriesChanges( L->id(), mChangedGeometries );
mChangedGeometries.clear();
}
else
{
commitErrors << tr( "ERROR: %n geometries not changed.", "not changed geometries count", mChangedGeometries.size() );
success = false;
}
}
if ( !success )
{
if ( provider->hasErrors() )
{
commitErrors << tr( "\n Provider errors:" ) << provider->errors();
provider->clearErrors();
}
}
return success;
}
