void QgsRelationReferenceWidget::setRelation( const QgsRelation& relation, bool allowNullValue )
{
mAllowNull = allowNullValue;
mRemoveFKButton->setVisible( allowNullValue && mReadOnlySelector );
if ( relation.isValid() )
{
mInvalidLabel->hide();
mRelation = relation;
mReferencingLayer = relation.referencingLayer();
mRelationName = relation.name();
mReferencedLayer = relation.referencedLayer();
mReferencedFieldIdx = mReferencedLayer->fields().lookupField( relation.fieldPairs().at( 0 ).second );
mReferencingFieldIdx = mReferencingLayer->fields().lookupField( relation.fieldPairs().at( 0 ).first );
mAttributeEditorFrame->setObjectName( QStringLiteral( "referencing/" ) + relation.name() );
QgsAttributeEditorContext context( mEditorContext, relation, QgsAttributeEditorContext::Single, QgsAttributeEditorContext::Embed );
if ( mEmbedForm )
{
mAttributeEditorFrame->setTitle( mReferencedLayer->name() );
mReferencedAttributeForm = new QgsAttributeForm( relation.referencedLayer(), QgsFeature(), context, this );
mAttributeEditorLayout->addWidget( mReferencedAttributeForm );
}
connect( mReferencedLayer, SIGNAL( editingStarted() ), this, SLOT( updateAddEntryButton() ) );
connect( mReferencedLayer, SIGNAL( editingStopped() ), this, SLOT( updateAddEntryButton() ) );
updateAddEntryButton();
}
else
{
mInvalidLabel->show();
}
if ( mShown && isVisible() )
{
init();
}
}
void QgsRelationEditorWidget::setRelations( const QgsRelation& relation, const QgsRelation& nmrelation )
{
if ( mRelation.isValid() )
{
disconnect( mRelation.referencingLayer(), SIGNAL( editingStarted() ), this, SLOT( updateButtons() ) );
disconnect( mRelation.referencingLayer(), SIGNAL( editingStopped() ), this, SLOT( updateButtons() ) );
}
if ( mNmRelation.isValid() )
{
disconnect( mNmRelation.referencedLayer(), SIGNAL( editingStarted() ), this, SLOT( updateButtons() ) );
disconnect( mNmRelation.referencedLayer(), SIGNAL( editingStopped() ), this, SLOT( updateButtons() ) );
}
mRelation = relation;
mNmRelation = nmrelation;
if ( !mRelation.isValid() )
return;
connect( mRelation.referencingLayer(), SIGNAL( editingStarted() ), this, SLOT( updateButtons() ) );
connect( mRelation.referencingLayer(), SIGNAL( editingStopped() ), this, SLOT( updateButtons() ) );
if ( mNmRelation.isValid() )
{
connect( mNmRelation.referencingLayer(), SIGNAL( editingStarted() ), this, SLOT( updateButtons() ) );
connect( mNmRelation.referencingLayer(), SIGNAL( editingStopped() ), this, SLOT( updateButtons() ) );
}
setTitle( relation.name() );
QgsVectorLayer* lyr = relation.referencingLayer();
bool canChangeAttributes = lyr->dataProvider()->capabilities() & QgsVectorDataProvider::ChangeAttributeValues;
if ( canChangeAttributes && !lyr->isReadOnly() )
{
mToggleEditingButton->setEnabled( true );
updateButtons();
}
else
{
mToggleEditingButton->setEnabled( false );
}
setObjectName( mRelation.name() );
loadState();
updateUi();
}
void QgsRelationReferenceWidgetWrapper::initWidget( QWidget* editor )
{
QgsRelationReferenceWidget* w = dynamic_cast<QgsRelationReferenceWidget*>( editor );
if ( !w )
{
w = new QgsRelationReferenceWidget( editor );
}
mWidget = w;
mWidget->setEditorContext( context(), mCanvas, mMessageBar );
bool showForm = config( "ShowForm", true ).toBool();
bool mapIdent = config( "MapIdentification", false ).toBool();
bool readOnlyWidget = config( "ReadOnly", false ).toBool();
bool orderByValue = config( "OrderByValue", false ).toBool();
mWidget->setEmbedForm( showForm );
mWidget->setReadOnlySelector( readOnlyWidget );
mWidget->setAllowMapIdentification( mapIdent );
mWidget->setOrderByValue( orderByValue );
if ( config( "FilterFields", QVariant() ).isValid() )
{
mWidget->setFilterFields( config( "FilterFields" ).toStringList() );
mWidget->setChainFilters( config( "ChainFilters" ).toBool() );
}
mWidget->setAllowAddFeatures( config( "AllowAddFeatures", false ).toBool() );
QgsRelation relation = QgsProject::instance()->relationManager()->relation( config( "Relation" ).toString() );
// If this widget is already embedded by the same relation, reduce functionality
const QgsAttributeEditorContext* ctx = &context();
do
{
if ( ctx->relation().name() == relation.name() )
{
mWidget->setEmbedForm( false );
mWidget->setReadOnlySelector( false );
mWidget->setAllowMapIdentification( false );
}
ctx = ctx->parentContext();
}
while ( ctx );
mWidget->setRelation( relation, config( "AllowNULL" ).toBool() );
connect( mWidget, SIGNAL( foreignKeyChanged( QVariant ) ), this, SLOT( foreignKeyChanged( QVariant ) ) );
}
void QgsRelationEditorWidget::setRelationFeature( const QgsRelation& relation, const QgsFeature& feature )
{
if ( mRelation.isValid() )
{
disconnect( mRelation.referencingLayer(), SIGNAL( editingStarted() ), this, SLOT( updateButtons() ) );
disconnect( mRelation.referencingLayer(), SIGNAL( editingStopped() ), this, SLOT( updateButtons() ) );
}
mRelation = relation;
mFeature = feature;
connect( mRelation.referencingLayer(), SIGNAL( editingStarted() ), this, SLOT( updateButtons() ) );
connect( mRelation.referencingLayer(), SIGNAL( editingStopped() ), this, SLOT( updateButtons() ) );
setTitle( relation.name() );
QgsVectorLayer* lyr = relation.referencingLayer();
bool canChangeAttributes = lyr->dataProvider()->capabilities() & QgsVectorDataProvider::ChangeAttributeValues;
if ( canChangeAttributes && !lyr->isReadOnly() )
{
mToggleEditingButton->setEnabled( true );
updateButtons();
}
else
{
mToggleEditingButton->setEnabled( false );
}
setObjectName( mRelation.name() );
loadState();
// If not yet initialized, it is not (yet) visible, so we don't load it to be faster (lazy loading)
// If it is already initialized, it has been set visible before and the currently shown feature is changing
// and the widget needs updating
if ( mVisible )
{
QgsFeatureRequest myRequest = mRelation.getRelatedFeaturesRequest( mFeature );
mDualView->init( mRelation.referencingLayer(), nullptr, myRequest, mEditorContext );
}
}
void QgsRelationWidgetWrapper::initWidget( QWidget* editor )
{
QgsRelationEditorWidget* w = dynamic_cast<QgsRelationEditorWidget*>( editor );
// if the editor cannot be cast to relation editor, insert a new one
if ( !w )
{
w = new QgsRelationEditorWidget( editor );
w->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
if ( ! editor->layout() )
{
editor->setLayout( new QGridLayout() );
}
editor->layout()->addWidget( w );
}
QgsAttributeEditorContext myContext( QgsAttributeEditorContext( context(), mRelation, QgsAttributeEditorContext::Multiple, QgsAttributeEditorContext::Embed ) );
w->setEditorContext( myContext );
QgsRelation nmrel = QgsProject::instance()->relationManager()->relation( config( "nm-rel" ).toString() );
// If this widget is already embedded by the same relation, reduce functionality
const QgsAttributeEditorContext* ctx = &context();
do
{
if (( ctx->relation().name() == mRelation.name() && ctx->formMode() == QgsAttributeEditorContext::Embed )
|| ctx->relation().name() == nmrel.name() )
{
w->setVisible( false );
break;
}
ctx = ctx->parentContext();
}
while ( ctx );
w->setRelations( mRelation, nmrel );
mWidget = w;
}
void QgsRelationReferenceWidget::setRelation( const QgsRelation& relation, bool allowNullValue )
{
mAllowNull = allowNullValue;
mRemoveFKButton->setVisible( allowNullValue && mReadOnlySelector );
if ( relation.isValid() )
{
mInvalidLabel->hide();
mRelation = relation;
mReferencingLayer = relation.referencingLayer();
mRelationName = relation.name();
mReferencedLayer = relation.referencedLayer();
mReferencedFieldIdx = mReferencedLayer->fieldNameIndex( relation.fieldPairs().at( 0 ).second );
mReferencingFieldIdx = mReferencingLayer->fieldNameIndex( relation.fieldPairs().at( 0 ).first );
QgsAttributeEditorContext context( mEditorContext, relation, QgsAttributeEditorContext::Single, QgsAttributeEditorContext::Embed );
if ( mEmbedForm )
{
mAttributeEditorFrame->setTitle( mReferencedLayer->name() );
mReferencedAttributeForm = new QgsAttributeForm( relation.referencedLayer(), QgsFeature(), context, this );
mReferencedAttributeForm->hideButtonBox();
mAttributeEditorLayout->addWidget( mReferencedAttributeForm );
}
}
else
{
mInvalidLabel->show();
}
if ( mShown && isVisible() )
{
init();
}
}
void QgsRelationEditorWidget::setRelations( const QgsRelation &relation, const QgsRelation &nmrelation )
{
if ( mRelation.isValid() )
{
disconnect( mRelation.referencingLayer(), &QgsVectorLayer::editingStarted, this, &QgsRelationEditorWidget::updateButtons );
disconnect( mRelation.referencingLayer(), &QgsVectorLayer::editingStopped, this, &QgsRelationEditorWidget::updateButtons );
}
if ( mNmRelation.isValid() )
{
disconnect( mNmRelation.referencedLayer(), &QgsVectorLayer::editingStarted, this, &QgsRelationEditorWidget::updateButtons );
disconnect( mNmRelation.referencedLayer(), &QgsVectorLayer::editingStopped, this, &QgsRelationEditorWidget::updateButtons );
}
mRelation = relation;
mNmRelation = nmrelation;
if ( !mRelation.isValid() )
return;
mToggleEditingButton->setVisible( true );
const auto transactionGroups = QgsProject::instance()->transactionGroups();
for ( auto it = transactionGroups.constBegin(); it != transactionGroups.constEnd(); ++it )
{
if ( it.value()->layers().contains( mRelation.referencingLayer() ) )
{
mToggleEditingButton->setVisible( false );
mSaveEditsButton->setVisible( false );
}
}
connect( mRelation.referencingLayer(), &QgsVectorLayer::editingStarted, this, &QgsRelationEditorWidget::updateButtons );
connect( mRelation.referencingLayer(), &QgsVectorLayer::editingStopped, this, &QgsRelationEditorWidget::updateButtons );
if ( mNmRelation.isValid() )
{
connect( mNmRelation.referencedLayer(), &QgsVectorLayer::editingStarted, this, &QgsRelationEditorWidget::updateButtons );
connect( mNmRelation.referencedLayer(), &QgsVectorLayer::editingStopped, this, &QgsRelationEditorWidget::updateButtons );
}
setTitle( relation.name() );
QgsVectorLayer *lyr = relation.referencingLayer();
bool canChangeAttributes = lyr->dataProvider()->capabilities() & QgsVectorDataProvider::ChangeAttributeValues;
if ( canChangeAttributes && !lyr->readOnly() )
{
mToggleEditingButton->setEnabled( true );
updateButtons();
}
else
{
mToggleEditingButton->setEnabled( false );
}
if ( mNmRelation.isValid() )
mZoomToFeatureButton->setVisible( mNmRelation.referencedLayer()->isSpatial() );
else
mZoomToFeatureButton->setVisible( mRelation.referencingLayer()->isSpatial() );
setObjectName( QStringLiteral( "referenced/" ) + mRelation.name() );
updateUi();
}
