public static boolean enableDelete(IStructuredSelection graphicalSelection) {
boolean enableDel = false;
List<Object> elements = new ArrayList<Object>();
IStructuredSelection selection = Selection.getInstance().getStructuredSelection();
if (!selection.isEmpty()) {
if (graphicalSelection.getFirstElement() instanceof DiagramEditPart) return false;
enableDel = true;
// Iterate through removing elements that are only graphical
for (Iterator<?> iter = selection.iterator(); iter.hasNext(); ) {
Object current = iter.next();
if (current instanceof GraphicalElement_c) {
GraphicalElement_c ge = (GraphicalElement_c) current;
if (ge.getRepresents() == null) {
elements.add(current);
Selection.getInstance().removeFromSelection(ge);
}
}
}
}
selection = Selection.getInstance().getStructuredSelection();
if (!selection.isEmpty()) {
// Check the remaining items against the usual DeleteAction,
enableDel = DeleteAction.canDeleteAction();
}
// Add the graphical only elements back to the selection
for (int i = 0; i < elements.size(); ++i) {
Selection.getInstance().addToSelection(elements.get(i));
}
return enableDel;
}
private void performDiagramTest(
final NonRootModelElement element, int expectedGraphicalElementCount) {
Model_c model =
Model_c.ModelInstance(
Ooaofgraphics.getInstance(element.getModelRoot().getId()),
new ClassQueryInterface_c() {
@Override
public boolean evaluate(Object candidate) {
return ((Model_c) candidate).getOoa_id().equals(element.Get_ooa_id());
}
});
assertNotNull(
"Could not locate diagram for element : " + element.getClass().getSimpleName(), model);
// if the element is a package assert the Ooa type for the model
if (element instanceof Package_c) {
assertTrue(
"Found a diagram representing a package with an improper ooa type.",
model.getOoa_type() == Ooatype_c.Package);
}
GraphicalElement_c[] elements = GraphicalElement_c.getManyGD_GEsOnR1(model);
assertEquals(
"Did not find the expected graphical element count for : "
+ element.getClass().getSimpleName(),
expectedGraphicalElementCount,
elements.length);
for (GraphicalElement_c ge : elements) {
// if the represents value is a package assert the proper ooa type
if (ge.getRepresents() instanceof Package_c) {
assertTrue(
"Found a graphical element representing a package with an improper ooa type.",
ge.getOoa_type() == Ooatype_c.Package);
}
}
}