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/*******************************************************************************
* Copyright (c) 2004, 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.wst.css.core.internal.document;
import java.util.Vector;
import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode;
/**
*
*/
abstract class AbstractCSSNodeList {
protected Vector nodes = null;
ICSSNode appendNode(ICSSNode node) {
if (node == null)
return null;
if (this.nodes == null)
this.nodes = new Vector();
this.nodes.addElement(node);
return node;
}
/**
* @return int
*/
public int getLength() {
if (this.nodes == null)
return 0;
return this.nodes.size();
}
protected ICSSNode itemImpl(int index) {
if (this.nodes == null)
return null;
if (index < 0 || index >= this.nodes.size())
return null;
return (ICSSNode) this.nodes.elementAt(index);
}
ICSSNode removeNode(int index) {
if (this.nodes == null)
return null; // no node
if (index < 0 || index >= this.nodes.size())
return null; // invalid parameter
ICSSNode removed = (ICSSNode) this.nodes.elementAt(index);
this.nodes.removeElementAt(index);
return removed;
}
}
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