Java XML Last Child Element getLastVisibleChildElement(Node parent)

Description

Finds and returns the last visible child element node.

License

Apache License

Declaration

public static Element getLastVisibleChildElement(Node parent) 

Method Source Code

//package com.java2s;
/*//from w ww .  j a  v  a 2s .c  o  m
 * Copyright 1999-2002,2004,2005 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Hashtable;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

public class Main {
    /** Finds and returns the last visible child element node. */
    public static Element getLastVisibleChildElement(Node parent) {

        // search for node
        Node child = parent.getLastChild();
        while (child != null) {
            if (child.getNodeType() == Node.ELEMENT_NODE && !isHidden(child)) {
                return (Element) child;
            }
            child = child.getPreviousSibling();
        }

        // not found
        return null;

    }

    /** Finds and returns the last visible child element node. 
     *  Overload previous method for non-Xerces node impl
     */
    public static Element getLastVisibleChildElement(Node parent, Hashtable hiddenNodes) {

        // search for node
        Node child = parent.getLastChild();
        while (child != null) {
            if (child.getNodeType() == Node.ELEMENT_NODE && !isHidden(child, hiddenNodes)) {
                return (Element) child;
            }
            child = child.getPreviousSibling();
        }

        // not found
        return null;

    }

    public static boolean isHidden(Node node) {
        if (node instanceof com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl) node).getReadOnly();
        else if (node instanceof com.sun.org.apache.xerces.internal.dom.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.dom.NodeImpl) node).getReadOnly();
        return false;
    }

    public static boolean isHidden(Node node, Hashtable hiddenNodes) {
        if (node instanceof com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl) node).getReadOnly();
        else if (node instanceof com.sun.org.apache.xerces.internal.dom.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.dom.NodeImpl) node).getReadOnly();
        else
            return hiddenNodes.containsKey(node);
    }
}

Related

1. getLastChildElement(Node start)
2. getLastChildElementNS(Node parent, String uri, String localpart)
3. getLastChildWithTagNameNS(Element parent, String namespaceURI, String localName)
4. getLastNamedChildNode(Node root, String nodeName)
5. getLastNodeChild(Node node)