/**
* Adds an undone NullOperation (i.e. has no effects on executing, undoing or redoing) to the
* Eclipse IOperationHistory to be sure that redoing is possible. This is necessary for the UI
* Redo possibility being activated.
*/
protected void simulateUndo() {
IUndoableOperation auxOp = new NullOperation();
try {
auxOp.addContext(context);
eclipseHistory.execute(auxOp, null, null);
eclipseHistory.undo(context, null, null);
if (!eclipseHistory.canRedo(context)) log.error("Simulating Undo failed");
} catch (ExecutionException e) {
log.error("Simulating Undo failed");
}
}
/** @see IActionDelegate#run(IAction) */
public void run(IAction action) {
try {
final Element selectedElement = getSelectedElement();
IUndoableOperation operation =
new AbstractEMFOperation(editingDomain, "Create Nested Subclass") {
@Override
protected IStatus doExecute(IProgressMonitor monitor, IAdaptable info) {
Property property = null;
if (selectedElement instanceof Association) {
Association association = (Association) selectedElement;
property = UMLUtil.getNavigableEnd(association);
} else if (selectedElement instanceof Property) {
property = (Property) selectedElement;
}
if (property == null || !(property.getType() instanceof Class)) {
return Status.CANCEL_STATUS;
}
Class baseClass = (Class) property.getType();
// prompt for new class name
String className = null;
InputDialog inputDialog =
new InputDialog(
activePart.getSite().getShell(),
"Nested Class",
"Enter class name",
baseClass.getName(),
null);
if (inputDialog.open() == Window.OK) {
className = inputDialog.getValue();
}
if (className == null || className.length() == 0) {
return Status.CANCEL_STATUS;
}
Class newClass = UMLFactory.eINSTANCE.createClass();
property.getClass_().getNestedClassifiers().add(newClass);
newClass.setName(className);
property.setType(newClass);
// create new generalization
newClass.createGeneralization(baseClass);
// prompt for selection of redefined properties
// TODO customize dialog title and prompt
SubclassHandler subclassHandler =
new SubclassHandler(activePart.getSite().getShell(), newClass);
subclassHandler.openSubclassDialog();
// TODO this does not select in CommonNavigator. maybe need a refresh first?
if (activePart instanceof ISetSelectionTarget) {
((ISetSelectionTarget) activePart).selectReveal(new StructuredSelection(newClass));
}
return Status.OK_STATUS;
}
};
try {
IWorkspaceCommandStack commandStack =
(IWorkspaceCommandStack) editingDomain.getCommandStack();
operation.addContext(commandStack.getDefaultUndoContext());
commandStack.getOperationHistory().execute(operation, new NullProgressMonitor(), null);
} catch (ExecutionException ee) {
Logger.logException(ee);
}
} catch (Exception e) {
throw new RuntimeException(e.getCause());
}
}