Package org.apache.xerces.dom

Source Code of org.apache.xerces.dom.TextImpl

/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999 The Apache Software Foundation.  All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The end-user documentation included with the redistribution,
*    if any, must include the following acknowledgment: 
*       "This product includes software developed by the
*        Apache Software Foundation (http://www.apache.org/)."
*    Alternately, this acknowledgment may appear in the software itself,
*    if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
*    not be used to endorse or promote products derived from this
*    software without prior written permission. For written
*    permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
*    nor may "Apache" appear in their name, without prior written
*    permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.apache.org.  For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/

package org.apache.xerces.dom;

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

/**
* Text nodes hold the non-markup, non-Entity content of
* an Element or Attribute.
* <P>
* When a document is first made available to the DOM, there is only
* one Text object for each block of adjacent plain-text. Users (ie,
* applications) may create multiple adjacent Texts during editing --
* see {@link Element#normalize} for discussion.
* <P>
* Note that CDATASection is a subclass of Text. This is conceptually
* valid, since they're really just two different ways of quoting
* characters when they're written out as part of an XML stream.
*
* @version
* @since  PR-DOM-Level-1-19980818.
*/
public class TextImpl
    extends CharacterDataImpl
    implements CharacterData, Text {

    //
    // Constants
    //

    /** Serialization version. */
    static final long serialVersionUID = -5294980852957403469L;
   
    //
    // Constructors
    //

    /** Factory constructor. */
    public TextImpl(CoreDocumentImpl ownerDoc, String data) {
        super(ownerDoc, data);
   
   
    //
    // Node methods
    //

    /**
     * A short integer indicating what type of node this is. The named
     * constants for this value are defined in the org.w3c.dom.Node interface.
     */
    public short getNodeType() {
        return Node.TEXT_NODE;
    }

    /** Returns the node name. */
    public String getNodeName() {
        return "#text";
    }

    /**
     * NON-DOM: Set whether this Text is ignorable whitespace.
     */
    public void setIgnorableWhitespace(boolean ignore) {

        if (needsSyncData()) {
            synchronizeData();
        }
        isIgnorableWhitespace(ignore);

    } // setIgnorableWhitespace(boolean)
   

    /**
     * NON-DOM: Returns whether this Text is ignorable whitespace.
     */
    public boolean isIgnorableWhitespace() {

        if (needsSyncData()) {
            synchronizeData();
        }
        return internalIsIgnorableWhitespace();

    } // isIgnorableWhitespace():boolean
   
    //
    // Text methods
    //

    /**
     * Break a text node into two sibling nodes.  (Note that if the
     * current node has no parent, they won't wind up as "siblings" --
     * they'll both be orphans.)
     *
     * @param offset The offset at which to split. If offset is at the
     * end of the available data, the second node will be empty.
     *
     * @returns A reference to the new node (containing data after the
     * offset point). The original node will contain data up to that
     * point.
     *
     * @throws DOMException(INDEX_SIZE_ERR) if offset is <0 or >length.
     *
     * @throws DOMException(NO_MODIFICATION_ALLOWED_ERR) if node is read-only.
     */
    public Text splitText(int offset)
        throws DOMException {

      if (isReadOnly()) {
            throw new DOMException(
          DOMException.NO_MODIFICATION_ALLOWED_ERR,
          "DOM001 Modification not allowed");
        }

        if (needsSyncData()) {
            synchronizeData();
        }
      if (offset < 0 || offset > data.length() ) {
            throw new DOMException(DOMException.INDEX_SIZE_ERR,
                                       "DOM004 Index out of bounds");
        }
       
        // split text into two separate nodes
      Text newText =
            getOwnerDocument().createTextNode(data.substring(offset));
      setNodeValue(data.substring(0, offset));

        // insert new text node
        Node parentNode = getParentNode();
      if (parentNode != null) {
        parentNode.insertBefore(newText, nextSibling);
        }

      return newText;

    } // splitText(int):Text

} // class TextImpl
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