Copyright (c) 2005, 2015 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2005, 2015 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 ******************************************************************************/

package org.eclipse.core.commands.common;


An event fired from a NamedHandleObject. This provides
notification of changes to the defined state, the name and the description.

Since:
3.1/**
 * <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.
/**
	 * 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.
/**
	 * 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.
/**
	 * 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 AbstractHandleObjectEvent.
Params:
definedChanged – 
           true, iff the defined property changed.
descriptionChanged – 
           true, iff the description property changed.
nameChanged – 
           true, iff the name property changed./**
	 * 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.
Returns:
true, iff the description property changed./**
	 * 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.
Returns:
true, iff the name property changed./**
	 * 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);
	}

}