/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.forms.formmodel;
import org.apache.cocoon.forms.FormsException;
import org.apache.cocoon.forms.formmodel.library.Library;
import org.apache.cocoon.forms.util.DomHelper;
import org.w3c.dom.Element;
/**
* @version $Id: ImportDefinitionBuilder.java 449149 2006-09-23 03:58:05Z crossley $
*/
public class ImportDefinitionBuilder extends AbstractWidgetDefinitionBuilder {
public static final String PREFIX_ATTRIBUTE = "prefix";
public static final String URI_ATTRIBUTE = "uri";
/**
* Imports a new library
*/
public WidgetDefinition buildWidgetDefinition(Element widgetElement)
throws Exception {
if (this.context == null || this.context.getLocalLibrary() == null) {
throw new FormsException("Import statement seen and context is empty.",
DomHelper.getLocationObject(widgetElement));
}
Library lib = this.context.getLocalLibrary();
String prefix = DomHelper.getAttribute(widgetElement, PREFIX_ATTRIBUTE);
String uri = DomHelper.getAttribute(widgetElement, URI_ATTRIBUTE);
if (!lib.includeAs(prefix, uri)) {
throw new FormsException("Import statement did not succeed (probably used ':' in the prefix?).",
DomHelper.getLocationObject(widgetElement));
}
return null;
}
}