/*
* Copyright 2009 Prime Technology.
*
* 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.primefaces.component.filedownload;
import java.io.IOException;
import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.component.ActionSource;
import javax.faces.component.UIComponent;
import javax.faces.view.facelets.ComponentHandler;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.FaceletException;
import javax.faces.view.facelets.TagAttribute;
import javax.faces.view.facelets.TagConfig;
import javax.faces.view.facelets.TagHandler;
public class FileDownloadTagHandler extends TagHandler {
private final TagAttribute value;
private final TagAttribute contentDisposition;
public FileDownloadTagHandler(TagConfig tagConfig) {
super(tagConfig);
this.value = getRequiredAttribute("value");
this.contentDisposition = getAttribute("contentDisposition");
}
public void apply(FaceletContext faceletContext, UIComponent parent) throws IOException, FacesException, FaceletException, ELException {
if (ComponentHandler.isNew(parent)) {
ValueExpression valueVE = value.getValueExpression(faceletContext, Object.class);
ValueExpression contentDispositionVE = null;
if(contentDisposition != null)
contentDispositionVE= contentDisposition.getValueExpression(faceletContext, String.class);
ActionSource actionSource = (ActionSource) parent;
actionSource.addActionListener(new FileDownloadActionListener(valueVE, contentDispositionVE));
}
}
}