UMLCreateShortcutAction.java

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

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.operations.IOperationHistory;
import org.eclipse.core.commands.operations.OperationHistoryFactory;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.common.util.WrappedException;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.CreateCommand;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.CanonicalEditPolicy;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.EditPolicyRoles;
import org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.uml2.diagram.clazz.edit.commands.UMLCreateShortcutDecorationsCommand;

/**
 * @generated
 */
public class UMLCreateShortcutAction extends AbstractHandler {

	/**
	 * @generated NOT 
	 * FIXME: custom template should make this method generated again [256496]
	 */
	public Object execute(ExecutionEvent event) throws ExecutionException {
		IEditorPart diagramEditor = HandlerUtil.getActiveEditorChecked(event);
		Shell shell = diagramEditor.getEditorSite().getShell();
		assert diagramEditor instanceof DiagramEditor;
		TransactionalEditingDomain editingDomain = ((DiagramEditor) diagramEditor).getEditingDomain();
		ISelection selection = HandlerUtil.getCurrentSelectionChecked(event);
		assert selection instanceof IStructuredSelection;
		assert ((IStructuredSelection) selection).size() == 1;
		assert ((IStructuredSelection) selection).getFirstElement() instanceof EditPart;
		EditPart selectedDiagramPart = (EditPart) ((IStructuredSelection) selection).getFirstElement();
		final View view = (View) selectedDiagramPart.getModel();
		UMLElementChooserDialog elementChooser = new UMLElementChooserDialog(shell, view);
		int result = elementChooser.open();
		if (result != Window.OK) {
			return null;
		}
		URI selectedModelElementURI = elementChooser.getSelectedModelElementURI();
		final EObject selectedElement;
		try {
			selectedElement = editingDomain.getResourceSet().getEObject(selectedModelElementURI, true);
		} catch (WrappedException e) {
			UMLDiagramEditorPlugin.getInstance().logError("Exception while loading object: " + selectedModelElementURI.toString(), e); //$NON-NLS-1$
			return null;
		}

		if (selectedElement == null) {
			return null;
		}

		IOperationHistory history = OperationHistoryFactory.getOperationHistory();
		IStatus status = createShortcut(editingDomain, history, selectedElement, selectedDiagramPart, diagramEditor);

		if (!status.isOK()) {
			UMLDiagramEditorPlugin.getInstance().logError(status.getMessage(), status.getException());
		}

		return null;
	}

	/**
	 * @NOT-GENERATED 
	 * FIXME: custom template should make this method generated again [256496]
	 */
	public static IStatus createShortcut(TransactionalEditingDomain editingDomain, IOperationHistory history, EObject selectedElement, EditPart editPart, IEditorPart diagramEditor) {

		final View view = (View) editPart.getModel();
		final EditPart parentPart = editPart;
		final Diagram diagram = view.getDiagram();

		CreateViewRequest.ViewDescriptor viewDescriptor = new CreateViewRequest.ViewDescriptor(new EObjectAdapter(selectedElement), Node.class, null, UMLDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT);

		ICommand command = new CreateCommand(editingDomain, viewDescriptor, diagram);
		command = command.compose(new UMLCreateShortcutDecorationsCommand(editingDomain, diagram, viewDescriptor));

		IStatus status = null;
		try {
			status = OperationHistoryFactory.getOperationHistory().execute(command, new NullProgressMonitor(), null);
		} catch (Exception e) {
			status = new Status(IStatus.ERROR, UMLDiagramEditorPlugin.ID, IStatus.OK, "Unable to create shortcut", e); //$NON-NLS-1$
		}

		CanonicalEditPolicy policy = (CanonicalEditPolicy) parentPart.getEditPolicy(EditPolicyRoles.CANONICAL_ROLE);
		if (policy != null) {
			policy.refresh();
		}

		return status;
	}
}