content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 mf.org.apache.xerces.impl.xs.opti;
  
  import mf.org.w3c.dom.DOMException;
  import mf.org.w3c.dom.Text;
  
  /**
   * The <code>Text</code> interface inherits from <code>CharacterData</code>
   * and represents the textual content (termed character data in XML) of an
   * <code>Element</code> or <code>Attr</code>. If there is no markup inside
   * an element's content, the text is contained in a single object
   * implementing the <code>Text</code> interface that is the only child of
   * the element. If there is markup, it is parsed into the information items
   * (elements, comments, etc.) and <code>Text</code> nodes that form the list
   * of children of the element.
   * <p>When a document is first made available via the DOM, there is only one
   * <code>Text</code> node for each block of text. Users may create adjacent
   * <code>Text</code> nodes that represent the contents of a given element
   * without any intervening markup, but should be aware that there is no way
   * to represent the separations between these nodes in XML or HTML, so they
   * will not (in general) persist between DOM editing sessions. The
   * <code>normalize()</code> method on <code>Node</code> merges any such
   * adjacent <code>Text</code> objects into a single node for each block of
   * text.
   * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>.
   * <p/>
   * This is an empty implementation.
   *
   * @author Neil Graham, IBM
   * @version $Id: DefaultText.java 699892 2008-09-28 21:08:27Z mrglavas $
   * @xerces.internal
   */
  public class DefaultText extends NodeImpl implements Text {
  
      // CharacterData methods
  
      /**
       * The character data of the node that implements this interface. The DOM
       * implementation may not put arbitrary limits on the amount of data
       * that may be stored in a <code>CharacterData</code> node. However,
       * implementation limits may mean that the entirety of a node's data may
       * not fit into a single <code>DOMString</code>. In such cases, the user
       * may call <code>substringData</code> to retrieve the data in
       * appropriately sized pieces.
       *
       * @throws DOMException NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.
       * @throws DOMException DOMSTRING_SIZE_ERR: Raised when it would return more characters than
       *                      fit in a <code>DOMString</code> variable on the implementation
       *                      platform.
       */
      @Override
      public String getData()
              throws DOMException {
          return null;
      }
  
      /**
       * The character data of the node that implements this interface. The DOM
       * implementation may not put arbitrary limits on the amount of data
       * that may be stored in a <code>CharacterData</code> node. However,
       * implementation limits may mean that the entirety of a node's data may
       * not fit into a single <code>DOMString</code>. In such cases, the user
       * may call <code>substringData</code> to retrieve the data in
       * appropriately sized pieces.
       *
       * @throws DOMException NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.
       * @throws DOMException DOMSTRING_SIZE_ERR: Raised when it would return more characters than
       *                      fit in a <code>DOMString</code> variable on the implementation
       *                      platform.
       */
      @Override
      public void setData(String data)
              throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      /**
       * The number of 16-bit units that are available through <code>data</code>
       * and the <code>substringData</code> method below. This may have the
       * value zero, i.e., <code>CharacterData</code> nodes may be empty.
       */
      @Override
      public int getLength() {
          return 0;
      }
  
      /**
       * Extracts a range of data from the node.
       *
       * @param offset Start offset of substring to extract.
       * @param count  The number of 16-bit units to extract.
       * @return The specified substring. If the sum of <code>offset</code> and
       * <code>count</code> exceeds the <code>length</code>, then all 16-bit
       * units to the end of the data are returned.
       * @throws DOMException INDEX_SIZE_ERR: Raised if the specified <code>offset</code> is
       *                      negative or greater than the number of 16-bit units in
       *                      <code>data</code>, or if the specified <code>count</code> is
       *                      negative.
       *                      <br>DOMSTRING_SIZE_ERR: Raised if the specified range of text does
       *                      not fit into a <code>DOMString</code>.
       */
      @Override
      public String substringData(int offset,
                                  int count)
              throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      /**
       * Append the string to the end of the character data of the node. Upon
       * success, <code>data</code> provides access to the concatenation of
       * <code>data</code> and the <code>DOMString</code> specified.
       *
       * @param arg The <code>DOMString</code> to append.
       * @throws DOMException NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
       */
      @Override
      public void appendData(String arg)
              throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      /**
       * Insert a string at the specified 16-bit unit offset.
       *
       * @param offset The character offset at which to insert.
       * @param arg    The <code>DOMString</code> to insert.
       * @throws DOMException INDEX_SIZE_ERR: Raised if the specified <code>offset</code> is
       *                      negative or greater than the number of 16-bit units in
       *                      <code>data</code>.
       *                      <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
       */
      @Override
      public void insertData(int offset,
                             String arg)
              throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      /**
       * Remove a range of 16-bit units from the node. Upon success,
       * <code>data</code> and <code>length</code> reflect the change.
       *
       * @param offset The offset from which to start removing.
       * @param count  The number of 16-bit units to delete. If the sum of
       *               <code>offset</code> and <code>count</code> exceeds
       *               <code>length</code> then all 16-bit units from <code>offset</code>
       *               to the end of the data are deleted.
       * @throws DOMException INDEX_SIZE_ERR: Raised if the specified <code>offset</code> is
       *                      negative or greater than the number of 16-bit units in
       *                      <code>data</code>, or if the specified <code>count</code> is
       *                      negative.
       *                      <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
       */
      @Override
      public void deleteData(int offset,
                             int count)
              throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      /**
       * Replace the characters starting at the specified 16-bit unit offset
       * with the specified string.
       *
       * @param offset The offset from which to start replacing.
       * @param count  The number of 16-bit units to replace. If the sum of
       *               <code>offset</code> and <code>count</code> exceeds
       *               <code>length</code>, then all 16-bit units to the end of the data
       *               are replaced; (i.e., the effect is the same as a <code>remove</code>
       *               method call with the same range, followed by an <code>append</code>
       *               method invocation).
       * @param arg    The <code>DOMString</code> with which the range must be
       *               replaced.
       * @throws DOMException INDEX_SIZE_ERR: Raised if the specified <code>offset</code> is
       *                      negative or greater than the number of 16-bit units in
       *                      <code>data</code>, or if the specified <code>count</code> is
       *                      negative.
       *                      <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
       */
      @Override
      public void replaceData(int offset,
                              int count,
                              String arg)
              throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      // Text node methods
  
      /**
       * Breaks this node into two nodes at the specified <code>offset</code>,
       * keeping both in the tree as siblings. After being split, this node
       * will contain all the content up to the <code>offset</code> point. A
       * new node of the same type, which contains all the content at and
       * after the <code>offset</code> point, is returned. If the original
       * node had a parent node, the new node is inserted as the next sibling
       * of the original node. When the <code>offset</code> is equal to the
       * length of this node, the new node has no data.
       *
       * @param offset The 16-bit unit offset at which to split, starting from
       *               <code>0</code>.
       * @return The new node, of the same type as this node.
       * @throws DOMException INDEX_SIZE_ERR: Raised if the specified offset is negative or greater
       *                      than the number of 16-bit units in <code>data</code>.
       *                      <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
       */
      @Override
      public Text splitText(int offset)
              throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      /**
       * DOM Level 3 CR
       */
      @Override
      public boolean isElementContentWhitespace() {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      @Override
      public String getWholeText() {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  
      @Override
      public Text replaceWholeText(String content) throws DOMException {
          throw new DOMException(DOMException.NOT_SUPPORTED_ERR, "Method not supported");
      }
  }
  