Drag and Drop Multiple Pictogram elements from the Palette

Question

I have created custom Objects in the palette that can drag and drop individual pictogram elements using a class that extends AbstractAddFeature. What I would like to know if it is possible to drag and drop an item from the palette that contains multiple pictogram elements, such as task1, task2 and a connection between them? I cannot do this with my class from above since
@Override
public PictogramElement add(IAddContext context) {}
only returns one PictogramElement.

Answer 1

Hi,
In my editor I am adding rectangle with associated label that are separate pictogram elements. However they are both linked to the same business object and more linked to each other.
Please look at example from my code:
@Override
public PictogramElement add(IAddContext context) {
final Task addedTask = (Task) context.getNewObject();
final ContainerShape target = context.getTargetContainer();
final IPeCreateService peCreateService = Graphiti.getPeCreateService();
final IGaService gaService = Graphiti.getGaService();
final ContainerShape containerShape = peCreateService.createContainerShape(target, true);
int width = 0;
int height = 0;
width = context.getWidth() <= 0 ? getWidth() : context.getWidth();
height = context.getHeight() <= 0 ? getHeight() : context.getHeight();
final Rectangle invisibleRectangle = gaService.createInvisibleRectangle(containerShape);
gaService.setLocationAndSize(invisibleRectangle, context.getX(), context.getY(), width, height);
// create and set visible rectangle inside invisible rectangle
RoundedRectangle roundedRectangle = gaService.createRoundedRectangle(invisibleRectangle, 20, 20);
roundedRectangle.setParentGraphicsAlgorithm(invisibleRectangle);
roundedRectangle.setStyle(addedTask.isOnlyLocal() ? onlyLocalStyle : getStyle());
if(!addedTask.isAtomic()) roundedRectangle.setLineStyle(LineStyle.DOT);
gaService.setLocationAndSize(roundedRectangle, 0, 0, width, height);
insertInside(peCreateService, gaService, width, height, containerShape, invisibleRectangle, addedTask);
ContainerShape labelShape = addLabel(target, addedTask.getId(), width, height, context.getX(), context.getY());
link(containerShape, new Object[] {addedTask, labelShape});
link(labelShape, new Object[] {addedTask, containerShape});
updatePictogramElement(labelShape);
layoutPictogramElement(labelShape);
addInternalPorts(addedTask, containerShape);
updatePictogramElement(containerShape);
return containerShape;
I think that linking or making somehow relation between pictogram elements should be enough.