/*
    GNU GENERAL LICENSE
    Copyright (C) 2006 The Lobo Project. Copyright (C) 2014 - 2017 Lobo Evolution

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public
    License as published by the Free Software Foundation; either
    verion 3 of the License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    General License for more details.

    You should have received a copy of the GNU General Public
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
    

    Contact info: lobochief@users.sourceforge.net; ivan.difrancesco@yahoo.it
 */
/*
 * Created on Dec 3, 2005
 */
package org.lobobrowser.html.dombl;

import org.lobobrowser.html.domimpl.DOMNodeImpl;
import org.lobobrowser.js.AbstractScriptableDelegate;
import org.lobobrowser.w3c.html.HTMLCollection;
import org.w3c.dom.Node;

/**
 * The Class ChildHTMLCollection.
 */
public class ChildHTMLCollection extends AbstractScriptableDelegate implements
HTMLCollection {

    /** The root node. */
    private final DOMNodeImpl rootNode;

    /**
     * Instantiates a new child html collection.
     *
     * @param node
     *            the node
     */
    public ChildHTMLCollection(DOMNodeImpl node) {
        super();
        rootNode = node;
    }

    /*
     * (non-Javadoc)
     * @see org.lobobrowser.w3c.html.HTMLCollection#getLength()
     */
    @Override
    public int getLength() {
        return this.rootNode.getChildCount();
    }

    /*
     * (non-Javadoc)
     * @see org.lobobrowser.w3c.html.HTMLCollection#item(int)
     */
    @Override
    public Node item(int index) {
        return this.rootNode.getChildAtIndex(index);
    }

    /*
     * (non-Javadoc)
     * @see org.lobobrowser.w3c.html.HTMLCollection#namedItem(java.lang.String)
     */
    @Override
    public Node namedItem(String name) {
        org.w3c.dom.Document doc = this.rootNode.getOwnerDocument();
        if (doc == null) {
            return null;
        }
        // TODO: This might get elements that are not descendents.
        Node node = doc.getElementById(name);
        if ((node != null) && (node.getParentNode() == this.rootNode)) {
            return node;
        }
        return null;
    }

    /**
     * Index of.
     *
     * @param node
     *            the node
     * @return the int
     */
    public int indexOf(Node node) {
        return this.rootNode.getChildIndex(node);
    }
}