- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999-2002 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 com.sun.org.apache.xerces.internal.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 org.w3c.dom.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 $Id: TextImpl.java,v 1.22 2004/02/10 17:09:45 elena Exp $
- * @since PR-DOM-Level-1-19980818.
- */
- public class TextImpl
- extends CharacterDataImpl
- implements CharacterData, Text {
-
- //
- // Constants
- //
-
- /** Serialization version. */
- static final long serialVersionUID = -5294980852957403469L;
-
- //
- // Constructors
- //
-
- /** Default constructor */
- public TextImpl(){}
-
- /** Factory constructor. */
- public TextImpl(CoreDocumentImpl ownerDoc, String data) {
- super(ownerDoc, data);
- }
-
- /**
- * NON-DOM: resets node and sets specified values for the current node
- *
- * @param ownerDoc
- * @param data
- */
- public void setValues(CoreDocumentImpl ownerDoc, String data){
-
- flags=0;
- nextSibling = null;
- previousSibling=null;
- setOwnerDocument(ownerDoc);
- super.data = 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)
-
-
- /**
- * DOM L3 Core CR - Experimental
- *
- * Returns whether this text node contains
- * element content whitespace</a>, often abusively called "ignorable whitespace".
- * The text node is determined to contain whitespace in element content
- * during the load of the document or if validation occurs while using
- * <code>Document.normalizeDocument()</code>.
- * @since DOM Level 3
- */
- public boolean isElementContentWhitespace() {
- // REVISIT: is this implemenation correct?
- if (needsSyncData()) {
- synchronizeData();
- }
- return internalIsIgnorableWhitespace();
- }
-
-
- /**
- * DOM Level 3 WD - Experimental.
- * Returns all text of <code>Text</code> nodes logically-adjacent text
- * nodes to this node, concatenated in document order.
- * @since DOM Level 3
- */
- public String getWholeText(){
-
- if (needsSyncData()) {
- synchronizeData();
- }
- if (nextSibling == null) {
- return data;
- }
- if (fBufferStr == null){
- fBufferStr = new StringBuffer();
- }
- else {
- fBufferStr.setLength(0);
- }
- if (data != null && data.length() != 0) {
- fBufferStr.append(data);
- }
- getWholeText(nextSibling, fBufferStr);
- return fBufferStr.toString();
-
- }
-
- /**
- * Concatenates the text of all logically-adjacent text nodes
- *
- * @param node
- * @param buffer
- * @return true - if execution was stopped because the type of node
- * other than EntityRef, Text, CDATA is encountered, otherwise
- * return false
- */
- private boolean getWholeText(Node node, StringBuffer buffer){
- String text;
- while (node != null) {
- short type = node.getNodeType();
- if (type == Node.ENTITY_REFERENCE_NODE) {
- if (getWholeText(node.getFirstChild(), buffer)){
- return true;
- }
- }
- else if (type == Node.TEXT_NODE ||
- type == Node.CDATA_SECTION_NODE) {
- ((NodeImpl)node).getTextContent(buffer);
- }
- else {
- return true;
- }
-
- node = node.getNextSibling();
- }
- return false;
- }
-
- /**
- * DOM Level 3 WD - Experimental.
- */
- public Text replaceWholeText(String content)
- throws DOMException{
-
- if (needsSyncData()) {
- synchronizeData();
- }
-
- // make sure we can make the replacement
- if (!canModify(nextSibling)) {
- throw new DOMException(DOMException.NO_MODIFICATION_ALLOWED_ERR,
- DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null));
- }
-
- Node parent = this.getParentNode();
- if (content == null || content.length() == 0) {
- // remove current node
- if (parent !=null) { // check if node in the tree
- parent.removeChild(this);
- return null;
- }
- }
- Text currentNode = null;
- if (isReadOnly()){
- Text newNode = this.ownerDocument().createTextNode(content);
- if (parent !=null) { // check if node in the tree
- parent.insertBefore(newNode, this);
- parent.removeChild(this);
- currentNode = newNode;
- } else {
- return newNode;
- }
- } else {
- this.setData(content);
- currentNode = this;
- }
- Node sibling = currentNode.getNextSibling();
- while ( sibling !=null) {
- parent.removeChild(sibling);
- sibling = currentNode.getNextSibling();
- }
-
- return currentNode;
- }
-
- /**
- * If any EntityReference to be removed has descendants
- * that are not EntityReference, Text, or CDATASection
- * nodes, the replaceWholeText method must fail before
- * performing any modification of the document, raising a
- * DOMException with the code NO_MODIFICATION_ALLOWED_ERR.
- *
- * @param node
- * @return true - can replace text
- * false - can't replace exception must be raised
- */
- private boolean canModify(Node node){
- while (node != null) {
- short type = node.getNodeType();
- if (type == Node.ENTITY_REFERENCE_NODE) {
- if (!canModify(node.getFirstChild())){
- return false;
- }
- }
- else if (type != Node.TEXT_NODE &&
- type != Node.CDATA_SECTION_NODE) {
- return false;
- }
-
- node = node.getNextSibling();
- }
- return true;
- }
-
- /**
- * 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.
- *
- * @return 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,
- DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null));
- }
-
- if (needsSyncData()) {
- synchronizeData();
- }
- if (offset < 0 || offset > data.length() ) {
- throw new DOMException(DOMException.INDEX_SIZE_ERR,
- DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INDEX_SIZE_ERR", null));
- }
-
- // 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
-
-
- /**
- * NON-DOM (used by DOMParser): Reset data for the node.
- */
- public void replaceData (String value){
- data = value;
- }
-
-
- /**
- * NON-DOM (used by DOMParser: Sets data to empty string.
- * Returns the value the data was set to.
- */
- public String removeData (){
- String olddata=data;
- data = "";
- return olddata;
- }
-
-
- } // class TextImpl