/*
* Copyright 2009-2011 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.fileupload;
import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.servlet.ServletRequestWrapper;
import org.apache.commons.fileupload.FileItem;
import org.primefaces.event.FileUploadEvent;
import org.primefaces.model.DefaultUploadedFile;
import org.primefaces.model.UploadedFile;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.ComponentUtils;
import org.primefaces.webapp.MultipartRequest;
public class FileUploadRenderer extends CoreRenderer {
@Override
public void decode(FacesContext context, UIComponent component) {
FileUpload fileUpload = (FileUpload) component;
String clientId = fileUpload.getClientId(context);
MultipartRequest multipartRequest = getMultiPartRequestInChain(context);
if(multipartRequest != null) {
FileItem file = multipartRequest.getFileItem(clientId);
if(file != null) {
UploadedFile uploadedFile = new DefaultUploadedFile(file);
if(fileUpload.getMode().equals("simple"))
fileUpload.setSubmittedValue(uploadedFile);
else
fileUpload.queueEvent(new FileUploadEvent(fileUpload, uploadedFile));
}
}
}
/**
* Finds our MultipartRequestServletWrapper in case application contains other RequestWrappers
*/
private MultipartRequest getMultiPartRequestInChain(FacesContext facesContext) {
Object request = facesContext.getExternalContext().getRequest();
while(request instanceof ServletRequestWrapper) {
if(request instanceof MultipartRequest) {
return (MultipartRequest) request;
}
else {
request = ((ServletRequestWrapper) request).getRequest();
}
}
return null;
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
FileUpload fileUpload = (FileUpload) component;
encodeMarkup(context, fileUpload);
encodeScript(context, fileUpload);
}
protected void encodeScript(FacesContext context, FileUpload fileUpload) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = fileUpload.getClientId(context);
String mode = fileUpload.getMode();
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write("$(function(){");
writer.write(fileUpload.resolveWidgetVar() + " = new PrimeFaces.widget.FileUpload('" + clientId + "', {");
writer.write("mode:'" + mode + "'");
if(!mode.equals("simple")) {
String update = fileUpload.getUpdate();
String process = fileUpload.getProcess();
writer.write(",autoUpload:" + fileUpload.isAuto());
writer.write(",dnd:" + fileUpload.isDragDropSupport());
if(update != null) writer.write(",update:'" + ComponentUtils.findClientIds(context, fileUpload, update) + "'");
if(process != null) writer.write(",process:'" + ComponentUtils.findClientIds(context, fileUpload, process) + "'");
if(fileUpload.getOnstart() != null) writer.write(",onstart:function(e, start) {" + fileUpload.getOnstart() + ";}");
if(fileUpload.getOncomplete() != null) writer.write(",oncomplete:function(e, data) {" + fileUpload.getOncomplete() + ";}");
//restrictions
if(fileUpload.getAllowTypes() != null) writer.write(",acceptFileTypes:" + fileUpload.getAllowTypes());
if(fileUpload.getSizeLimit() != Integer.MAX_VALUE) writer.write(",maxFileSize:" + fileUpload.getSizeLimit());
if(fileUpload.getFileLimit() != Integer.MAX_VALUE) writer.write(",maxNumberOfFiles:" + fileUpload.getFileLimit());
//restriction messages
if(fileUpload.getInvalidFileMessage() != null) writer.write(",invalidFileMessage:'" + fileUpload.getInvalidFileMessage() + "'");
if(fileUpload.getInvalidSizeMessage() != null) writer.write(",invalidSizeMessage:'" + fileUpload.getInvalidSizeMessage() + "'");
if(fileUpload.getFileLimitMessage() != null) writer.write(",fileLimitMessage:'" + fileUpload.getFileLimitMessage() + "'");
}
writer.write("});});");
writer.endElement("script");
}
protected void encodeMarkup(FacesContext context, FileUpload fileUpload) throws IOException {
if(fileUpload.getMode().equals("simple"))
encodeSimpleMarkup(context, fileUpload);
else
encodeAdvancedMarkup(context, fileUpload);
}
protected void encodeAdvancedMarkup(FacesContext context, FileUpload fileUpload) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = fileUpload.getClientId(context);
boolean disabled = fileUpload.isDisabled();
String styleClass = fileUpload.getStyleClass();
styleClass = styleClass == null ? FileUpload.CONTAINER_CLASS : FileUpload.CONTAINER_CLASS + " " + styleClass;
writer.startElement("div", fileUpload);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "id");
if(fileUpload.getStyle() != null) writer.writeAttribute("style", fileUpload.getStyle(), "style");
//buttonbar
writer.startElement("div", fileUpload);
writer.writeAttribute("class", FileUpload.BUTTON_BAR_CLASS, "styleClass");
if(fileUpload.getStyle() != null)
writer.writeAttribute("style", fileUpload.getStyle(), "style");
//choose button
writer.startElement("label", fileUpload);
writer.writeAttribute("class", FileUpload.CHOOSE_BUTTON_CLASS, null);
writer.startElement("span", null);
writer.write(fileUpload.getLabel());
writer.endElement("span");
encodeInputField(context, fileUpload, clientId + "_input");
writer.endElement("label");
if(!fileUpload.isShowButtons() && !fileUpload.isAuto()) {
encodeButton(context, fileUpload, fileUpload.getUploadLabel(), "submit", FileUpload.UPLOAD_BUTTON_CLASS);
encodeButton(context, fileUpload, fileUpload.getCancelLabel(), "button", FileUpload.CANCEL_BUTTON_CLASS);
}
writer.endElement("div");
//content
writer.startElement("div", null);
writer.writeAttribute("class", FileUpload.CONTENT_CLASS, null);
writer.startElement("table", null);
writer.writeAttribute("class", FileUpload.FILES_CLASS, null);
writer.endElement("table");
writer.endElement("div");
writer.endElement("div");
}
protected void encodeSimpleMarkup(FacesContext context, FileUpload fileUpload) throws IOException {
encodeInputField(context, fileUpload, fileUpload.getClientId(context));
}
protected void encodeInputField(FacesContext context, FileUpload fileUpload, String clientId) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("input", null);
writer.writeAttribute("type", "file", null);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("name", clientId, null);
if(fileUpload.isMultiple()) writer.writeAttribute("multiple", "multiple", null);
if(fileUpload.getStyle() != null) writer.writeAttribute("style", fileUpload.getStyle(), "style");
if(fileUpload.getStyleClass() != null) writer.writeAttribute("class", fileUpload.getStyleClass(), "styleClass");
if(fileUpload.isDisabled()) writer.writeAttribute("disabled", "disabled", "disabled");
writer.endElement("input");
}
protected void encodeButton(FacesContext facesContext, FileUpload fileUpload, String label, String type, String styleClass) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
writer.startElement("button", null);
writer.writeAttribute("type", type, null);
writer.writeAttribute("class", styleClass, null);
writer.write(label);
writer.endElement("button");
}
}