| /******************************************************************************* |
| * 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.core.commands.common; |
| |
| /** |
| * <p> |
| * An event fired from a <code>NamedHandleObject</code>. This provides |
| * notification of changes to the defined state, the name and the description. |
| * </p> |
| * |
| * @since 3.1 |
| */ |
| public abstract class AbstractNamedHandleEvent extends |
| AbstractHandleObjectEvent { |
| |
| /** |
| * The bit used to represent whether the category has changed its |
| * description. |
| */ |
| protected static final int CHANGED_DESCRIPTION = 1 << LAST_BIT_USED_ABSTRACT_HANDLE; |
| |
| /** |
| * The bit used to represent whether the category has changed its name. |
| */ |
| protected static final int CHANGED_NAME = 1 << LAST_BIT_USED_ABSTRACT_HANDLE; |
| |
| /** |
| * The last used bit so that subclasses can add more properties. |
| */ |
| protected static final int LAST_USED_BIT = CHANGED_NAME; |
| |
| /** |
| * Constructs a new instance of <code>AbstractHandleObjectEvent</code>. |
| * |
| * @param definedChanged |
| * <code>true</code>, iff the defined property changed. |
| * @param descriptionChanged |
| * <code>true</code>, iff the description property changed. |
| * @param nameChanged |
| * <code>true</code>, iff the name property changed. |
| */ |
| protected AbstractNamedHandleEvent(final boolean definedChanged, |
| final boolean descriptionChanged, final boolean nameChanged) { |
| super(definedChanged); |
| |
| if (descriptionChanged) { |
| changedValues |= CHANGED_DESCRIPTION; |
| } |
| if (nameChanged) { |
| changedValues |= CHANGED_NAME; |
| } |
| } |
| |
| /** |
| * Returns whether or not the description property changed. |
| * |
| * @return <code>true</code>, iff the description property changed. |
| */ |
| public final boolean isDescriptionChanged() { |
| return ((changedValues & CHANGED_DESCRIPTION) != 0); |
| } |
| |
| /** |
| * Returns whether or not the name property changed. |
| * |
| * @return <code>true</code>, iff the name property changed. |
| */ |
| public final boolean isNameChanged() { |
| return ((changedValues & CHANGED_NAME) != 0); |
| } |
| |
| } |