Bug 357632

Description Ivar Refsdal 2011-09-14 09:45:34 EDT

Build Identifier: 

Currently one needs to code the property sheet by hand.
But this can already be generated by the ecore model's .genmodel, and the result is a well functioning editor.

However, inserting the property sheet is a little tricky (personally I had to learn about Emf.Edit, Emf.Editor, extension points, etc, etc.). One needs to edit DiagramEditorInternal and modify the getAdapter() function.
The classes return from this function must also override selectionChanged and removing the graphical objects, only returning the domain objects.

Example code for getAdapter:
@SuppressWarnings("restriction")
	@Override
	public Object getAdapter(@SuppressWarnings("rawtypes") Class type) {
		// existing code here...
		if (type == IPropertySheetPage.class) {
				AdapterFactoryEditingDomain ed = (AdapterFactoryEditingDomain) getEditingDomain();
				GraphitiExtendedPropertySheetPage propertySheetPage = new GraphitiExtendedPropertySheetPage(ed);
				propertySheetPage.setPropertySourceProvider(new AdapterFactoryContentProvider(ed.getAdapterFactory()));
				return propertySheetPage;
		}
		return super.getAdapter(type);
	}

and for the custom propertysheet class:
public class GraphitiExtendedPropertySheetPage extends ExtendedPropertySheetPage {

	public GraphitiExtendedPropertySheetPage(AdapterFactoryEditingDomain editingDomain) {
		super(editingDomain);
	}

	@Override
	public void selectionChanged(IWorkbenchPart part, ISelection sel) {

		validation: {

			if (!(sel instanceof IStructuredSelection)) {
				break validation;
			}

			StructuredSelection selection = (StructuredSelection) sel;
			PictogramElement obj = getSelectedPictogramElement(selection);

			if (!(obj instanceof PictogramElement)) {
				break validation;
			}

			PictogramElement pictogramElement = (PictogramElement) obj;
			EObject businessObject = Graphiti.getLinkService().getBusinessObjectForLinkedPictogramElement(
					pictogramElement);
			if (businessObject == null) {
				break validation;
			}

			Object[] objects = new Object[] { businessObject };
			sel = new TreeSelection(new TreePath(objects));
		}

	super.selectionChanged(part, sel);
	}

	/**
	 * Copied, slightly modified.
	 * 
	 * @return the selected pictogram element.
	 */
	protected PictogramElement getSelectedPictogramElement(StructuredSelection selection) {

			Object firstElement = selection.getFirstElement();

			if (firstElement instanceof PictogramElement) {
				return (PictogramElement) firstElement;
			}

			EditPart editPart = null;
			if (firstElement instanceof EditPart) {
				editPart = (EditPart) firstElement;
			} else if (firstElement instanceof IAdaptable) {
				editPart = (EditPart) ((IAdaptable) firstElement).getAdapter(EditPart.class);
			}
			if (editPart != null && editPart.getModel() instanceof PictogramElement) {
				return (PictogramElement) editPart.getModel();
			}
		return null;
	}

See getPropertySheetPage() XXXEditor.java in the generated Emf.Editor package for a starting point.

Thanks.

Reproducible: Always