/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * 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.
 */

package org.apache.harmony.xml.dom;

import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.Text;

/**
 * Provides a straightforward implementation of the corresponding W3C DOM
 * interface. The class is used internally only, thus only notable members that
 * are not in the original interface are documented (the W3C docs are quite
 * extensive). Hope that's ok.
 * <p>
 * Some of the fields may have package visibility, so other classes belonging to
 * the DOM implementation can easily access them while maintaining the DOM tree
 * structure.
 */
public class TextImpl extends CharacterDataImpl implements Text {

    TextImpl(DocumentImpl document, String data) {
        super(document, data);
    }

    @Override
    public String getNodeName() {
        return "#text";
    }

    @Override
    public short getNodeType() {
        return Node.TEXT_NODE;
    }

    @Override
    public String getNodeValue() {
        return getData();
    }

    public Text splitText(int offset) throws DOMException {
        Text newText = getOwnerDocument().createTextNode(
                substringData(offset, getLength() - offset));
        deleteData(0, offset);

        Node refNode = getNextSibling();
        if (refNode == null) {
            getParentNode().appendChild(newText);
        } else {
            getParentNode().insertBefore(newText, refNode);
        }

        return this;
    }

}