/*******************************************************************************
* Copyright (c) 2005, 2015 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);
}
}