Java XML Has Child getLastVisibleChildElement(Node parent, Hashtable hiddenNodes)

Description

Finds and returns the last visible child element node.

License

Apache License

Declaration

public static Element getLastVisibleChildElement(Node parent, Hashtable hiddenNodes) 

Method Source Code

//package com.java2s;
/*/*from   w w  w  .  ja  v a  2 s.  c  om*/
 * 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. getChildHash(Element elem, String elementName, String attrName)
2. hasActivityChildNode(Node node)
3. hasAnyChildElement(final Element e)
4. hasChild(Element element, String child)
5. hasChild(Element node, String name)