| /****************************************************************************** |
| * Copyright (c) 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| ****************************************************************************/ |
| |
| package org.eclipse.gmf.runtime.emf.type.core.commands; |
| |
| import java.util.Collection; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EObject; |
| |
| import org.eclipse.gmf.runtime.common.core.command.AbstractCommand; |
| import org.eclipse.gmf.runtime.common.core.command.CommandResult; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest; |
| |
| /** |
| * Abstract superclass for commands that modify model elements. |
| * |
| * @author ldamus |
| */ |
| public abstract class EditElementCommand |
| extends AbstractCommand { |
| |
| /** |
| * The element to be modified. |
| */ |
| private EObject elementToEdit; |
| |
| /** |
| * The edit request that carries the required command parameters. |
| */ |
| private final IEditCommandRequest request; |
| |
| /** |
| * The kind of model element that can be modified by this command. |
| */ |
| private EClass eClass = null; |
| |
| /** |
| * Constructs a new command instance. |
| * |
| * @param label |
| * the command label |
| * @param elementToEdit |
| * the element to be modified |
| * @param request |
| * the edt request |
| */ |
| protected EditElementCommand(String label, EObject elementToEdit, |
| IEditCommandRequest request) { |
| |
| super(label); |
| this.elementToEdit = elementToEdit; |
| this.request = request; |
| } |
| |
| /** |
| * Checks that the element to be modified by this command is of the correct |
| * kind. |
| */ |
| public boolean isExecutable() { |
| |
| if (getEClass() != null) { |
| return getEClass().isSuperTypeOf(getEClassToEdit()); |
| } |
| return true; |
| } |
| |
| public boolean isUndoable() { |
| return true; |
| } |
| |
| public boolean isRedoable() { |
| return true; |
| } |
| |
| /** |
| * Gets the element to be modified by this command. |
| * |
| * @return the element to be modified |
| */ |
| protected EObject getElementToEdit() { |
| return elementToEdit; |
| } |
| |
| protected EClass getEClassToEdit() { |
| return getElementToEdit().eClass(); |
| } |
| |
| /** |
| * Sets the element to be modified by this command. |
| * |
| * @return the element to be modified |
| */ |
| protected void setElementToEdit(EObject element) { |
| this.elementToEdit = element; |
| } |
| |
| /** |
| * Gets the edit request. |
| * |
| * @return the edit request |
| */ |
| protected IEditCommandRequest getRequest() { |
| return request; |
| } |
| |
| /** |
| * Gets the kind of element that can be modified by this command. |
| * |
| * @return the kind of element |
| */ |
| protected EClass getEClass() { |
| return eClass; |
| } |
| |
| /** |
| * Sets the kind of element that can be modified by this command. |
| * |
| * @param eClass |
| * the kind of element |
| */ |
| protected void setEClass(EClass eClass) { |
| this.eClass = eClass; |
| } |
| |
| /** |
| * Convenience method to check the status of <code>commandRequest</code>. |
| * |
| * @param commandResult |
| * the command result to check |
| * @return <code>true</code> if the result is OK, <code>false</code> |
| * otherwise. |
| */ |
| protected boolean isOK(CommandResult commandResult) { |
| return commandResult.getStatus().getCode() == IStatus.OK; |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.gmf.runtime.common.core.command.AbstractCommand#getAffectedObjects() |
| */ |
| public Collection getAffectedObjects() { |
| return request.getElementsToEdit(); |
| } |
| } |