bundles/org.eclipse.wst.xsl.core/src_validation/org/eclipse/wst/xsl/core/internal/compiler/xslt10/processor/ProcessorStylesheetElement.java

/*******************************************************************************
 * Copyright (c) 2008 Standards for Technology in Automotive Retail
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     David Carver - STAR - bug 224197 - initial API and implementation
 *                    based on work from Apache Xalan 2.7.0
 *******************************************************************************/

/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed 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.
 */
/*
 * $Id: ProcessorStylesheetElement.java,v 1.2 2008/03/28 02:38:16 dacarver Exp $
 */
package org.eclipse.wst.xsl.core.internal.compiler.xslt10.processor;

import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;

import org.eclipse.wst.xsl.core.internal.compiler.xslt10.templates.Stylesheet;
import org.eclipse.wst.xsl.core.internal.compiler.xslt10.templates.StylesheetComposed;
import org.eclipse.wst.xsl.core.internal.compiler.xslt10.templates.StylesheetRoot;

import org.xml.sax.Attributes;

/**
 * TransformerFactory for xsl:stylesheet or xsl:transform markup.
 * 
 * @see <a href="http://www.w3.org/TR/xslt#dtd">XSLT DTD</a>
 * @see <a
 *      href="http://www.w3.org/TR/xslt#stylesheet-element">stylesheet-element
 *      in XSLT Specification</a>
 * 
 * @xsl.usage internal
 */
public class ProcessorStylesheetElement extends XSLTElementProcessor {
	static final long serialVersionUID = -877798927447840792L;

	/**
	 * Receive notification of the start of an strip-space element.
	 * 
	 * @param handler
	 *            The calling StylesheetHandler/TemplatesBuilder.
	 * @param uri
	 *            The Namespace URI, or the empty string if the element has no
	 *            Namespace URI or if Namespace processing is not being
	 *            performed.
	 * @param localName
	 *            The local name (without prefix), or the empty string if
	 *            Namespace processing is not being performed.
	 * @param rawName
	 *            The raw XML 1.0 name (with prefix), or the empty string if raw
	 *            names are not available.
	 * @param attributes
	 *            The attributes attached to the element. If there are no
	 *            attributes, it shall be an empty Attributes object.
	 */
	@Override
	public void startElement(StylesheetHandler handler, String uri,
			String localName, String rawName, Attributes attributes)
			throws org.xml.sax.SAXException {

		super.startElement(handler, uri, localName, rawName, attributes);
		try {
			int stylesheetType = handler.getStylesheetType();
			Stylesheet stylesheet;

			if (stylesheetType == StylesheetHandler.STYPE_ROOT) {
				try {
					stylesheet = getStylesheetRoot(handler);
				} catch (TransformerConfigurationException tfe) {
					throw new TransformerException(tfe);
				}
			} else {
				Stylesheet parent = handler.getStylesheet();

				if (stylesheetType == StylesheetHandler.STYPE_IMPORT) {
					StylesheetComposed sc = new StylesheetComposed(parent);

					parent.setImport(sc);

					stylesheet = sc;
				} else {
					stylesheet = new Stylesheet(parent);

					parent.setInclude(stylesheet);
				}
			}

			stylesheet.setDOMBackPointer(handler.getOriginatingNode());
			stylesheet.setLocaterInfo(handler.getLocator());

			stylesheet.setPrefixes(handler.getNamespaceSupport());
			handler.pushStylesheet(stylesheet);
			setPropertiesFromAttributes(handler, rawName, attributes, handler
					.getStylesheet());
			handler.pushElemTemplateElement(handler.getStylesheet());
		} catch (TransformerException te) {
			throw new org.xml.sax.SAXException(te);
		}
	}

	/**
	 * This method can be over-ridden by a class that extends this one.
	 * 
	 * @param handler
	 *            The calling StylesheetHandler/TemplatesBuilder.
	 */
	protected Stylesheet getStylesheetRoot(StylesheetHandler handler)
			throws TransformerConfigurationException {
		StylesheetRoot stylesheet;
		stylesheet = new StylesheetRoot(handler.getSchema(), handler
				.getStylesheetProcessor().getErrorListener());

		if (handler.getStylesheetProcessor().isSecureProcessing())
			stylesheet.setSecureProcessing(true);

		return stylesheet;
	}

	/**
	 * Receive notification of the end of an element.
	 * 
	 * @param handler
	 *            non-null reference to current StylesheetHandler that is
	 *            constructing the Templates.
	 * @param uri
	 *            The Namespace URI, or an empty string.
	 * @param localName
	 *            The local name (without prefix), or empty string if not
	 *            namespace processing.
	 * @param rawName
	 *            The qualified name (with prefix).
	 */
	@Override
	public void endElement(StylesheetHandler handler, String uri,
			String localName, String rawName) throws org.xml.sax.SAXException {
		super.endElement(handler, uri, localName, rawName);
		handler.popElemTemplateElement();
		handler.popStylesheet();
	}
}