/*
    GNU LESSER GENERAL PUBLIC LICENSE
    Copyright (C) 2006 The Lobo Project

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Contact info: lobochief@users.sourceforge.net
 */
/*
 * Created on Sep 4, 2005
 */
package org.lobobrowser.html.domimpl;

import org.lobobrowser.util.Strings;
import org.w3c.dom.DOMException;
import org.w3c.dom.Node;
import org.w3c.dom.Text;

public class TextImpl extends CharacterDataImpl implements Text {
  public TextImpl() {
    this("");
  }

  public TextImpl(final String text) {
    this.text = text;
  }

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.html2.Text#isElementContentWhitespace()
   */
  public boolean isElementContentWhitespace() {
    final String t = this.text;
    return (t == null) || t.trim().equals("");
  }

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.html2.Text#replaceWholeText(java.lang.String)
   */
  public Text replaceWholeText(final String content) throws DOMException {
    final NodeImpl parent = (NodeImpl) this.getParentNode();
    if (parent == null) {
      throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, "Text node has no parent");
    }
    return parent.replaceAdjacentTextNodes(this, content);
  }

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.html2.Text#splitText(int)
   */
  public Text splitText(final int offset) throws DOMException {
    final NodeImpl parent = (NodeImpl) this.getParentNode();
    if (parent == null) {
      throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, "Text node has no parent");
    }
    final String t = this.text;
    if ((offset < 0) || (offset > t.length())) {
      throw new DOMException(DOMException.INDEX_SIZE_ERR, "Bad offset: " + offset);
    }
    final String content1 = t.substring(0, offset);
    final String content2 = t.substring(offset);
    this.text = content1;
    final TextImpl newNode = new TextImpl(content2);
    newNode.setOwnerDocument(this.document);
    return (Text) parent.insertAfter(newNode, this);
  }

  /*
   * (non-Javadoc)
   *
   * @see org.w3c.dom.html2.Text#getwholeText()
   */
  public String getWholeText() {
    final NodeImpl parent = (NodeImpl) this.getParentNode();
    if (parent == null) {
      throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, "Text node has no parent");
    }
    return parent.getTextContent();
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.domimpl.NodeImpl#getlocalName()
   */
  @Override
  public String getLocalName() {
    return null;
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.domimpl.NodeImpl#getnodeName()
   */
  @Override
  public String getNodeName() {
    return "#text";
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.domimpl.NodeImpl#getnodeType()
   */
  @Override
  public short getNodeType() {
    return Node.TEXT_NODE;
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.domimpl.NodeImpl#getnodeValue()
   */
  @Override
  public String getNodeValue() throws DOMException {
    return this.text;
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.domimpl.NodeImpl#setnodeValue(java.lang.String)
   */
  @Override
  public void setNodeValue(final String nodeValue) throws DOMException {
    this.text = nodeValue;
  }

  @Override
  public void setTextContent(final String textContent) throws DOMException {
    this.text = textContent;
  }

  @Override
  protected Node createSimilarNode() {
    return new TextImpl(this.text);
  }

  @Override
  public String toString() {
    final String text = this.text;
    final int textLength = text == null ? 0 : text.length();
    return "#text[length=" + textLength + ",value=\"" + Strings.truncate(text, 64);
  }
}
