| /****************************************************************************** |
| * Copyright (c) 2006, 2010 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.commands.core.command; |
| |
| import org.eclipse.core.commands.operations.IUndoContext; |
| import org.eclipse.emf.edit.domain.EditingDomain; |
| import org.eclipse.gmf.runtime.emf.commands.core.internal.l10n.EMFCommandsCoreMessages; |
| |
| /** |
| * An {@link IUndoContext} that tags an EMF operation with the editing domain |
| * that it affects. Two editing domain contexts match if and only if they |
| * reference the same {@link EditingDomain} instance. |
| * |
| * @author ldamus |
| */ |
| public final class EditingDomainUndoContext |
| implements IUndoContext { |
| |
| private final EditingDomain editingDomain; |
| |
| private String label; |
| |
| /** |
| * Initializes me with the editing domain that I represent. |
| * |
| * @param domain |
| * the editing domain |
| */ |
| public EditingDomainUndoContext(EditingDomain domain) { |
| this(domain, null); |
| } |
| |
| /** |
| * Initializes me with the editing domain that I represent. |
| * |
| * @param domain |
| * the editing domain |
| * @param label |
| * the label for the context |
| * @since 1.4 |
| */ |
| public EditingDomainUndoContext(EditingDomain domain, String label) { |
| this.editingDomain = domain; |
| this.label = label; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.core.commands.operations.IUndoContext#getLabel() |
| */ |
| public String getLabel() { |
| if (label != null) { |
| return label; |
| } |
| return EMFCommandsCoreMessages.editingDomainContext; |
| } |
| |
| /** |
| * I match another <code>context</code> if it is a |
| * <code>EditingDomainUndoContext</code> representing the same editing |
| * domain as I. |
| */ |
| public boolean matches(IUndoContext context) { |
| return this.equals(context); |
| } |
| |
| /** |
| * I am equal to other <code>EditingDomainUndoContext</code> on the same |
| * editing domain as mine. |
| */ |
| public boolean equals(Object o) { |
| boolean result = false; |
| |
| if (o instanceof EditingDomainUndoContext) { |
| result = getEditingDomain() == ((EditingDomainUndoContext) o) |
| .getEditingDomain(); |
| } |
| |
| return result; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| return editingDomain == null ? 0 |
| : editingDomain.hashCode(); |
| } |
| |
| /** |
| * Obtains the editing domain. |
| * |
| * @return my editing domain |
| */ |
| public final EditingDomain getEditingDomain() { |
| return editingDomain; |
| } |
| |
| /** |
| * The string representation of this operation. Used for debugging purposes only. |
| * This string should not be shown to an end user. |
| * |
| * @return The string representation. |
| */ |
| public String toString() { |
| return getLabel(); |
| } |
| } |