21   mChildren.append( widget );
    31   return mVisibilityExpression;
    36   if ( visibilityExpression == mVisibilityExpression )
    44   QList<QgsAttributeEditorElement *> results;
    50       results.append( elem );
    66   qDeleteAll( mChildren );
    79   mRelation = relationManager->
relation( mRelationId );
    86   element->mRelation = mRelation;
    87   element->mShowLinkButton = mShowLinkButton;
    88   element->mShowUnlinkButton = mShowUnlinkButton;
    92 void QgsAttributeEditorField::saveConfiguration( QDomElement &elem )
 const    94   elem.setAttribute( QStringLiteral( 
"index" ), mIdx );
    97 QString QgsAttributeEditorField::typeIdentifier()
 const    99   return QStringLiteral( 
"attributeEditorField" );
   104   QDomElement elem = doc.createElement( typeIdentifier() );
   105   elem.setAttribute( QStringLiteral( 
"name" ), 
mName );
   106   elem.setAttribute( QStringLiteral( 
"showLabel" ), 
mShowLabel );
   108   saveConfiguration( elem );
   122 void QgsAttributeEditorRelation::saveConfiguration( QDomElement &elem )
 const   124   elem.setAttribute( QStringLiteral( 
"relation" ), mRelation.id() );
   125   elem.setAttribute( QStringLiteral( 
"showLinkButton" ), mShowLinkButton );
   126   elem.setAttribute( QStringLiteral( 
"showUnlinkButton" ), mShowUnlinkButton );
   129 QString QgsAttributeEditorRelation::typeIdentifier()
 const   131   return QStringLiteral( 
"attributeEditorRelation" );
   136   return mShowLinkButton;
   141   mShowLinkButton = showLinkButton;
   146   return mShowUnlinkButton;
   151   mShowUnlinkButton = showUnlinkButton;
 
void clear()
Clear all children from this container. 
 
bool init(QgsRelationManager *relManager)
Initializes the relation from the id. 
 
void setName(const QString &name)
Change the name of this container. 
 
This is an abstract base class for any elements of a drag and drop form. 
 
void setVisibilityExpression(const QgsOptionalExpression &visibilityExpression)
The visibility expression is used in the attribute form to show or hide this container based on an ex...
 
QgsAttributeEditorElement * clone(QgsAttributeEditorElement *parent) const override
Returns a clone of this element. 
 
virtual QList< QgsAttributeEditorElement * > findElements(AttributeEditorType type) const
Traverses the element tree to find any element of the specified type. 
 
This element will load a field's widget onto the form. 
 
QDomElement toDomElement(QDomDocument &doc) const
Gets the XML Dom element to save this element. 
 
This element will load a relation editor onto the form. 
 
AttributeEditorType type() const
The type of this element. 
 
An expression with an additional enabled flag. 
 
void setShowLabel(bool showLabel)
Controls if this element should be labeled with a title (field, relation or groupname). 
 
bool showUnlinkButton() const
Determines if the "unlink feature" button should be shown. 
 
bool showLabel() const
Controls if this element should be labeled with a title (field, relation or groupname). 
 
QgsAttributeEditorElement * parent() const
Gets the parent of this element. 
 
QgsOptionalExpression visibilityExpression() const
The visibility expression is used in the attribute form to show or hide this container based on an ex...
 
void setShowLinkButton(bool showLinkButton)
Determines if the "link feature" button should be shown. 
 
void setShowUnlinkButton(bool showUnlinkButton)
Determines if the "unlink feature" button should be shown. 
 
This class manages a set of relations between layers. 
 
QgsAttributeEditorElement * clone(QgsAttributeEditorElement *parent) const override
Returns a clone of this element. 
 
This is a container for attribute editors, used to group them visually in the attribute form if it is...
 
virtual void addChildElement(QgsAttributeEditorElement *element)
Add a child element to this container. 
 
bool showLinkButton() const
Determines if the "link feature" button should be shown. 
 
Q_INVOKABLE QgsRelation relation(const QString &id) const
Gets access to a relation by its id. 
 
QString name() const
Returns the name of this element.