UMLDiagramUpdateCommand.java

package org.eclipse.uml2.diagram.activity.part;

import java.util.Iterator;
import java.util.List;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.core.commands.IHandlerListener;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.CanonicalEditPolicy;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.PlatformUI;

/**
 * @generated
 */
@SuppressWarnings("unchecked")
public class UMLDiagramUpdateCommand implements IHandler {

	/**
	 * @generated
	 */
	public void addHandlerListener(IHandlerListener handlerListener) {
	}

	/**
	 * @generated
	 */
	public void dispose() {
	}

	/**
	 * @generated
	 */
	public Object execute(ExecutionEvent event) throws ExecutionException {
		ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService().getSelection();
		if (selection instanceof IStructuredSelection) {
			IStructuredSelection structuredSelection = (IStructuredSelection) selection;
			if (structuredSelection.size() != 1) {
				return null;
			}
			if (structuredSelection.getFirstElement() instanceof EditPart && ((EditPart) structuredSelection.getFirstElement()).getModel() instanceof View) {
				EObject modelElement = ((View) ((EditPart) structuredSelection.getFirstElement()).getModel()).getElement();
				performCanonicalUpdate(modelElement);
			}
		}
		return null;
	}

	/**
	 * @generated
	 */
	public boolean isEnabled() {
		return true;
	}

	/**
	 * @generated
	 */
	public boolean isHandled() {
		return true;
	}

	/**
	 * @generated
	 */
	public void removeHandlerListener(IHandlerListener handlerListener) {
	}

	/**
	 * @generated
	 */
	public static void performCanonicalUpdate(EObject modelElement) {
		if (modelElement == null) {
			return;
		}
		List editPolicies = CanonicalEditPolicy.getRegisteredEditPolicies(modelElement);
		for (Iterator it = editPolicies.iterator(); it.hasNext();) {
			CanonicalEditPolicy nextEditPolicy = (CanonicalEditPolicy) it.next();
			nextEditPolicy.refresh();
		}
	}
}