/*
* 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.myfaces.trinidadinternal.facelets;
import java.io.IOException;
import java.io.OutputStream;
import javax.el.ELException;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.component.ActionSource;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import org.apache.myfaces.trinidadinternal.taglib.listener.FileDownloadActionListener;
import com.sun.facelets.FaceletContext;
import com.sun.facelets.FaceletException;
import com.sun.facelets.tag.TagAttribute;
import com.sun.facelets.tag.TagConfig;
import com.sun.facelets.tag.TagHandler;
import com.sun.facelets.tag.jsf.ComponentSupport;
/**
*
*/
public class FileDownloadActionListenerTag extends TagHandler
{
public FileDownloadActionListenerTag(TagConfig tagConfig)
{
super(tagConfig);
_filename = getAttribute("filename");
_contentType = getAttribute("contentType");
_method = getRequiredAttribute("method");
}
public void apply(FaceletContext faceletContext,
UIComponent parent) throws IOException, FacesException, FaceletException, ELException
{
if(ComponentSupport.isNew(parent))
{
FileDownloadActionListener listener = new FileDownloadActionListener();
if (_filename != null)
{
if (_filename.isLiteral())
listener.setFilename(_filename.getValue());
else
{
ValueExpression valueExp = _filename.getValueExpression(faceletContext,
Object.class);
listener.setValueExpression(FileDownloadActionListener.FILENAME_KEY,
valueExp);
}
}
if (_contentType != null)
{
if (_contentType.isLiteral())
listener.setContentType(_contentType.getValue());
else
{
ValueExpression valueExp = _contentType.getValueExpression(faceletContext,
Object.class);
listener.setValueExpression(FileDownloadActionListener.CONTENT_TYPE_KEY,
valueExp);
}
}
MethodExpression me = _method.getMethodExpression(faceletContext,
Object.class,
_METHOD_PARAMS);
listener.setMethod(me);
ActionSource actionSource = (ActionSource)parent;
actionSource.addActionListener(listener);
}
}
static private final Class[] _METHOD_PARAMS =
new Class[]{FacesContext.class, OutputStream.class};
private final TagAttribute _method;
private final TagAttribute _filename;
private final TagAttribute _contentType;
}