| /* |
| * 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 "Xalan" 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, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xalan.templates; |
| |
| import org.w3c.dom.*; |
| |
| import org.xml.sax.*; |
| |
| // import org.apache.xpath.*; |
| import org.apache.xalan.trace.SelectionEvent; |
| import org.apache.xml.utils.QName; |
| import org.apache.xalan.res.XSLTErrorResources; |
| import org.apache.xalan.transformer.TransformerImpl; |
| |
| import javax.xml.transform.TransformerException; |
| |
| /** |
| * <meta name="usage" content="advanced"/> |
| * Implement xsl:fallback. |
| * <pre> |
| * <!ELEMENT xsl:fallback %template;> |
| * <!ATTLIST xsl:fallback %space-att;> |
| * </pre> |
| * @see <a href="http://www.w3.org/TR/xslt#fallback">fallback in XSLT Specification</a> |
| */ |
| public class ElemFallback extends ElemTemplateElement |
| { |
| |
| /** |
| * Get an int constant identifying the type of element. |
| * @see org.apache.xalan.templates.Constants |
| * |
| * @return The token ID for this element |
| */ |
| public int getXSLToken() |
| { |
| return Constants.ELEMNAME_FALLBACK; |
| } |
| |
| /** |
| * Return the node name. |
| * |
| * @return The Element's name |
| */ |
| public String getNodeName() |
| { |
| return Constants.ELEMNAME_FALLBACK_STRING; |
| } |
| |
| /** |
| * This is the normal call when xsl:fallback is instantiated. |
| * In accordance with the XSLT 1.0 Recommendation, chapter 15, |
| * "Normally, instantiating an xsl:fallback element does nothing." |
| * |
| * @param transformer non-null reference to the the current transform-time state. |
| * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>. |
| * @param mode reference, which may be null, to the <a href="http://www.w3.org/TR/xslt#modes">current mode</a>. |
| * |
| * @throws TransformerException |
| */ |
| public void execute( |
| TransformerImpl transformer) |
| throws TransformerException |
| { |
| } |
| |
| /** |
| * Execute the fallback elements. This must be explicitly called to |
| * instantiate the content of an xsl:fallback element. |
| * When an XSLT transformer performs fallback for an instruction |
| * element, if the instruction element has one or more xsl:fallback |
| * children, then the content of each of the xsl:fallback children |
| * must be instantiated in sequence; otherwise, an error must |
| * be signaled. The content of an xsl:fallback element is a template. |
| * |
| * @param transformer non-null reference to the the current transform-time state. |
| * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>. |
| * @param mode reference, which may be null, to the <a href="http://www.w3.org/TR/xslt#modes">current mode</a>. |
| * |
| * @throws TransformerException |
| */ |
| public void executeFallback( |
| TransformerImpl transformer) |
| throws TransformerException |
| { |
| |
| if (Constants.ELEMNAME_EXTENSIONCALL == m_parentNode.getXSLToken()) |
| { |
| |
| if (TransformerImpl.S_DEBUG) |
| transformer.getTraceManager().fireTraceEvent(this); |
| |
| transformer.executeChildTemplates(this, true); |
| |
| if (TransformerImpl.S_DEBUG) |
| transformer.getTraceManager().fireTraceEndEvent(this); |
| } |
| else |
| { |
| |
| // Should never happen |
| System.out.println( |
| "Error! parent of xsl:fallback must be an extension element!"); |
| } |
| } |
| } |