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/*******************************************************************************
* Copyright (c) 2000, 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.jface.action;
import org.eclipse.core.runtime.Assert;
/**
* Abstract superclass for group marker classes.
* <p>
* This class is not intended to be subclassed outside the framework.
* </p>
*/
public abstract class AbstractGroupMarker extends ContributionItem {
/**
* Constructor for use by subclasses.
*/
protected AbstractGroupMarker() {
}
/**
* Create a new group marker with the given name.
* The group name must not be <code>null</code> or the empty string.
* The group name is also used as the item id.
*
* @param groupName the name of the group
*/
protected AbstractGroupMarker(String groupName) {
super(groupName);
Assert.isTrue(groupName != null && groupName.length() > 0);
}
/**
* Returns the group name.
*
* @return the group name
*/
public String getGroupName() {
return getId();
}
/**
* The <code>AbstractGroupMarker</code> implementation of this <code>IContributionItem</code>
* method returns <code>true</code> iff the id is not <code>null</code>. Subclasses may override.
*/
public boolean isGroupMarker() {
return getId() != null;
}
}
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