/*******************************************************************************
* Copyright (c) 2004, 2006 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.jface.bindings;
import org.eclipse.core.commands.common.AbstractNamedHandleEvent;
/**
* An instance of this class describes changes to an instance of
* <code>IScheme</code>.
* <p>
* This class is not intended to be extended by clients.
* </p>
*
* @since 3.1
* @see ISchemeListener#schemeChanged(SchemeEvent)
*/
public final class SchemeEvent extends AbstractNamedHandleEvent {
/**
* The bit used to represent whether the scheme has changed its parent.
*/
private static final int CHANGED_PARENT_ID = LAST_USED_BIT << 1;
/**
* The scheme that has changed; this value is never <code>null</code>.
*/
private final Scheme scheme;
/**
* Creates a new instance of this class.
*
* @param scheme
* the instance of the interface that changed; must not be
* <code>null</code>.
* @param definedChanged
* true, iff the defined property changed.
* @param nameChanged
* true, iff the name property changed.
* @param descriptionChanged
* <code>true</code> if the description property changed;
* <code>false</code> otherwise.
* @param parentIdChanged
* true, iff the parentId property changed.
*/
public SchemeEvent(Scheme scheme, boolean definedChanged,
boolean nameChanged, boolean descriptionChanged,
boolean parentIdChanged) {
super(definedChanged, descriptionChanged, nameChanged);
if (scheme == null) {
throw new NullPointerException();
}
this.scheme = scheme;
if (parentIdChanged) {
changedValues |= CHANGED_PARENT_ID;
}
}
/**
* Returns the instance of the scheme that changed.
*
* @return the instance of the scheme that changed. Guaranteed not to be
* <code>null</code>.
*/
public final Scheme getScheme() {
return scheme;
}
/**
* Returns whether or not the parentId property changed.
*
* @return true, iff the parentId property changed.
*/
public final boolean isParentIdChanged() {
return ((changedValues & CHANGED_PARENT_ID) != 0);
}
}
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