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() ) );
}
QgsAttributeTableModel::QgsAttributeTableModel( QgsVectorLayerCache *layerCache, QObject *parent )
: QAbstractTableModel( parent )
, mLayerCache( layerCache )
, mFieldCount( 0 )
, mSortCacheExpression( QLatin1String( "" ) )
, mSortFieldIndex( -1 )
, mExtraColumns( 0 )
{
mExpressionContext << QgsExpressionContextUtils::globalScope()
<< QgsExpressionContextUtils::projectScope()
<< QgsExpressionContextUtils::layerScope( layerCache->layer() );
if ( layerCache->layer()->geometryType() == QgsWkbTypes::NullGeometry )
{
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( featuresDeleted( QgsFeatureIds ) ), this, SLOT( featuresDeleted( QgsFeatureIds ) ) );
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 QgsFieldExpressionWidget::setLayer( QgsVectorLayer *layer )
{
if ( mFieldProxyModel->sourceFieldModel()->layer() )
disconnect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), this, SLOT( reloadLayer() ) );
if ( layer )
mExpressionContext = layer->createExpressionContext();
else
mExpressionContext = QgsProject::instance()->createExpressionContext();
mFieldProxyModel->sourceFieldModel()->setLayer( layer );
if ( mFieldProxyModel->sourceFieldModel()->layer() )
connect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), SLOT( reloadLayer() ), Qt::UniqueConnection );
}
QgsAttributeForm::QgsAttributeForm( QgsVectorLayer* vl, const QgsFeature &feature, const QgsAttributeEditorContext &context, QWidget* parent )
: QWidget( parent )
, mLayer( vl )
, mContext( context )
, mButtonBox( nullptr )
, mFormNr( sFormCounter++ )
, mIsSaving( false )
, mIsAddDialog( false )
, mPreventFeatureRefresh( false )
, mEditCommandMessage( tr( "Attributes changed" ) )
{
init();
initPython();
setFeature( feature );
// Using attributeAdded() attributeDeleted() are not emitted on all fields changes (e.g. layer fields changed,
// joined fields changed) -> use updatedFields() instead
#if 0
connect( vl, SIGNAL( attributeAdded( int ) ), this, SLOT( onAttributeAdded( int ) ) );
connect( vl, SIGNAL( attributeDeleted( int ) ), this, SLOT( onAttributeDeleted( int ) ) );
#endif
connect( vl, SIGNAL( updatedFields() ), this, SLOT( onUpdatedFields() ) );
connect( vl, SIGNAL( beforeAddingExpressionField( QString ) ), this, SLOT( preventFeatureRefresh() ) );
connect( vl, SIGNAL( beforeRemovingExpressionField( int ) ), this, SLOT( preventFeatureRefresh() ) );
}
void QgsFieldExpressionWidget::setLayer( QgsVectorLayer *layer )
{
if ( mFieldProxyModel->sourceFieldModel()->layer() )
disconnect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), this, SLOT( reloadLayer() ) );
mExpressionContext.reset( new QgsExpressionContext() );
mExpressionContext->appendScope( QgsExpressionContextUtils::globalScope() );
mExpressionContext->appendScope( QgsExpressionContextUtils::projectScope() );
if ( layer )
mExpressionContext->appendScope( QgsExpressionContextUtils::layerScope( layer ) );
mFieldProxyModel->sourceFieldModel()->setLayer( layer );
if ( mFieldProxyModel->sourceFieldModel()->layer() )
connect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), SLOT( reloadLayer() ), Qt::UniqueConnection );
}
void QgsFieldModel::setLayer( QgsVectorLayer *layer )
{
if ( mLayer )
{
disconnect( mLayer, SIGNAL( updatedFields() ), this, SLOT( updateModel() ) );
disconnect( mLayer, SIGNAL( layerDeleted() ), this, SLOT( layerDeleted() ) );
}
mLayer = layer;
if ( mLayer )
{
connect( mLayer, SIGNAL( updatedFields() ), this, SLOT( updateModel() ) );
connect( mLayer, SIGNAL( layerDeleted() ), this, SLOT( layerDeleted() ) );
}
updateModel();
}
void QgsVectorLayerJoinBuffer::createJoinCaches()
{
QList< QgsVectorJoinInfo >::iterator joinIt = mVectorJoins.begin();
for ( ; joinIt != mVectorJoins.end(); ++joinIt )
{
cacheJoinLayer( *joinIt );
// make sure we are connected to the joined layer
if ( QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( joinIt->joinLayerId ) ) )
connect( vl, SIGNAL( updatedFields() ), this, SLOT( joinedLayerUpdatedFields() ), Qt::UniqueConnection );
}
}
void QgsVectorLayerJoinBuffer::removeJoin( const QString& joinLayerId )
{
for ( int i = 0; i < mVectorJoins.size(); ++i )
{
if ( mVectorJoins.at( i ).joinLayerId == joinLayerId )
{
mVectorJoins.removeAt( i );
}
}
if ( QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( joinLayerId ) ) )
disconnect( vl, SIGNAL( updatedFields() ), this, SLOT( joinedLayerUpdatedFields() ) );
emit joinedFieldsChanged();
}
void QgsVectorLayerJoinBuffer::addJoin( const QgsVectorJoinInfo& joinInfo )
{
mVectorJoins.push_back( joinInfo );
//cache joined layer to virtual memory if specified by user
if ( joinInfo.memoryCache )
{
cacheJoinLayer( mVectorJoins.last() );
}
// Wait for notifications about changed fields in joined layer to propagate them.
// During project load the joined layers possibly do not exist yet so the connection will not be created,
// but then QgsProject makes sure to call createJoinCaches() which will do the connection.
// Unique connection makes sure we do not respond to one layer's update more times (in case of multiple join)
if ( QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( joinInfo.joinLayerId ) ) )
connect( vl, SIGNAL( updatedFields() ), this, SLOT( joinedLayerUpdatedFields() ), Qt::UniqueConnection );
emit joinedFieldsChanged();
}
