/*
* 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.
*/
package org.apache.cocoon.woody.generation;
import java.io.IOException;
import java.util.Locale;
import java.util.Map;
import org.apache.avalon.framework.parameters.Parameters;
import org.apache.cocoon.ProcessingException;
import org.apache.cocoon.environment.SourceResolver;
import org.apache.cocoon.generation.AbstractGenerator;
import org.apache.cocoon.woody.Constants;
import org.apache.cocoon.woody.formmodel.Form;
import org.apache.cocoon.woody.transformation.WoodyPipelineConfig;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* A generator that streams an XML representation of a Woody {@link Form}. This will
* recursively contain the XML for all widgets on the form. This can then be styled
* using an XSLT.
*
* <p>An alternative approach that requires less (or even none) XSLT work is offered by
* the {@link org.apache.cocoon.woody.transformation.WoodyTemplateTransformer WoodyTemplateTransformer}.
*
* <p>The Form whose XML should be produced should reside either
* <ol><li> In a request attribute, whose name should be provided to this
* generator as a sitemap parameter called "attribute-name".</li>
* <li> Or else at its default-location in the flow context-object.</li>
* </ol>
*
* @version $Id: WoodyGenerator.java,v 1.10 2004/03/09 13:54:26 reinhard Exp $
*/
public class WoodyGenerator extends AbstractGenerator {
protected WoodyPipelineConfig config;
private static final String FORM_GENERATED_EL = "form-generated";
public void setup(SourceResolver resolver, Map objectModel, String src, Parameters par)
throws ProcessingException, SAXException, IOException {
super.setup(resolver, objectModel, src, par);
this.config = WoodyPipelineConfig.createConfig(objectModel, parameters);
}
public void recycle() {
super.recycle();
this.config = null;
}
public void generate() throws IOException, SAXException, ProcessingException {
contentHandler.startDocument();
contentHandler.startPrefixMapping(Constants.WI_PREFIX, Constants.WI_NS);
Attributes formAtts = this.config.getFormAttributes();
contentHandler.startElement(Constants.WI_NS, FORM_GENERATED_EL, Constants.WI_PREFIX_COLON +FORM_GENERATED_EL, formAtts);
Form form = config.findForm();
form.generateSaxFragment(contentHandler, Locale.US);
contentHandler.endElement(Constants.WI_NS, FORM_GENERATED_EL, Constants.WI_PREFIX_COLON +FORM_GENERATED_EL);
contentHandler.endPrefixMapping(Constants.WI_PREFIX);
contentHandler.endDocument();
}
}