| /* |
| * 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.faces.taglib; |
| |
| import org.apache.cocoon.taglib.TagSupport; |
| |
| import org.apache.cocoon.faces.FacesUtils; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| |
| import javax.faces.component.UIComponent; |
| import javax.faces.component.ValueHolder; |
| import javax.faces.convert.Converter; |
| import javax.faces.convert.ConverterException; |
| |
| /** |
| * Base class for converter tags. |
| * Can be extended to implement custom converters. |
| * |
| * @version CVS $Id$ |
| */ |
| public class ConverterTag extends TagSupport { |
| |
| private String converterId; |
| |
| public String getConverterId() { |
| return this.converterId; |
| } |
| |
| public void setConverterId(String converterId) { |
| this.converterId = converterId; |
| } |
| |
| public int doStartTag(String namespaceURI, String localName, String qName, Attributes atts) |
| throws SAXException { |
| |
| UIComponentTag tag = FacesUtils.findParentUIComponentTag(this); |
| if (tag == null) { |
| throw new SAXException("Tag " + getClass().getName() + " have to be nested in a UIComponentTag"); |
| } |
| |
| if (!tag.getCreated()) { |
| return 0; |
| } |
| |
| Converter converter = createConverter(); |
| |
| ValueHolder vh = (ValueHolder) tag.getComponentInstance(); |
| vh.setConverter(converter); |
| Object localValue = vh.getLocalValue(); |
| if (localValue instanceof String) { |
| try { |
| localValue = converter.getAsObject(tag.getFacesContext(), (UIComponent) vh, (String) localValue); |
| vh.setValue(localValue); |
| } catch (ConverterException ce) { |
| } |
| } |
| |
| return SKIP_BODY; |
| } |
| |
| /** |
| * Override to create custom validator |
| */ |
| protected Converter createConverter() { |
| final UIComponentTag tag = FacesUtils.findParentUIComponentTag(this); |
| String converterIdVal = (String) tag.evaluate(converterId); |
| return tag.getApplication().createConverter(converterIdVal); |
| } |
| |
| public void recycle() { |
| super.recycle(); |
| this.converterId = null; |
| } |
| } |