/*
* 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.picklist;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import org.primefaces.model.DualListModel;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.ComponentUtils;
public class PickListRenderer extends CoreRenderer {
@Override
public void decode(FacesContext facesContext, UIComponent component) {
PickList pickList = (PickList) component;
String clientId = pickList.getClientId(facesContext);
Map<String,String> params = facesContext.getExternalContext().getRequestParameterMap();
String sourceKey = clientId + "_sourceList";
String targetKey = clientId + "_targetList";
if(params.containsKey(sourceKey) && params.containsKey(targetKey)) {
pickList.setSubmittedValue(new String[]{params.get(sourceKey), params.get(targetKey)});
}
}
@Override
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
PickList pickList = (PickList) component;
encodeMarkup(facesContext, pickList);
encodeScript(facesContext, pickList);
}
private void encodeScript(FacesContext facesContext, PickList pickList) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
String clientId = pickList.getClientId(facesContext);
String widgetVar = createUniqueWidgetVar(facesContext, pickList);
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write(widgetVar + " = new PrimeFaces.widget.PickList('" + clientId + "', {});");
writer.endElement("script");
}
@SuppressWarnings("unchecked")
private void encodeMarkup(FacesContext facesContext, PickList pickList) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
String clientId = pickList.getClientId(facesContext);
String widgetVar = createUniqueWidgetVar(facesContext, pickList);
DualListModel model = (DualListModel) pickList.getValue();
writer.startElement("table", pickList);
writer.writeAttribute("id", clientId, "id");
if(pickList.getStyle() != null) writer.writeAttribute("style", pickList.getStyle(), null);
if(pickList.getStyleClass() != null) writer.writeAttribute("class", pickList.getStyleClass(), null);
writer.startElement("tbody", null);
writer.startElement("tr", null);
//Source
writer.startElement("td", null);
encodeList(facesContext, pickList, clientId + "_source", widgetVar, "ui-picklist-source", model.getSource());
writer.endElement("td");
//Controls
writer.startElement("td", null);
if(pickList.getFacetCount() > 0) {
encodeFacet(facesContext, pickList, widgetVar, "add");
encodeFacet(facesContext, pickList, widgetVar, "addAll");
encodeFacet(facesContext, pickList, widgetVar, "remove");
encodeFacet(facesContext, pickList, widgetVar, "removeAll");
} else {
encodeDefaultControl(facesContext, pickList, widgetVar, ">", "add");
encodeDefaultControl(facesContext, pickList, widgetVar, ">>", "addAll");
encodeDefaultControl(facesContext, pickList, widgetVar, "<", "remove");
encodeDefaultControl(facesContext, pickList, widgetVar, "<<", "removeAll");
}
writer.endElement("td");
//Target
writer.startElement("td", null);
encodeList(facesContext, pickList, clientId + "_target", widgetVar, "ui-picklist-target", model.getTarget());
writer.endElement("td");
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
}
private void encodeDefaultControl(FacesContext facesContext, PickList pickList, String widgetVar, String label, String fn) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
writer.startElement("div", null);
writer.writeAttribute("class", "ui-picklist-control", null);
writer.startElement("button", null);
writer.writeAttribute("type", "push", null);
writer.writeAttribute("style", "width:35px;", null);
writer.writeAttribute("onclick", widgetVar + "." + fn + "();return false;", null);
writer.write(label);
writer.endElement("button");
writer.endElement("div");
}
private void encodeFacet(FacesContext facesContext, PickList pickList, String widgetVar, String facet) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
UIComponent control = pickList.getFacet(facet);
if(control != null) {
writer.startElement("div", null);
writer.writeAttribute("class", "ui-picklist-control", null);
ComponentUtils.decorateAttribute(control, "onclick", widgetVar + "." + facet + "();return false;");
renderChild(facesContext, control);
writer.endElement("div");
}
}
@SuppressWarnings("unchecked")
private void encodeList(FacesContext facesContext, PickList pickList, String listId, String widgetVar, String styleClass, List model) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
String method = styleClass.equals("ui-picklist-source") ? ".add();" : ".remove();";
writer.startElement("select", null);
writer.writeAttribute("id", listId, "id");
writer.writeAttribute("name", listId, "id");
writer.writeAttribute("class", styleClass, null);
writer.writeAttribute("multiple", "multiple", null);
writer.writeAttribute("ondblclick", widgetVar + method, null);
String state = encodeOptions(facesContext, pickList, model);
writer.endElement("select");
encodeListStateHolder(facesContext, listId + "List", state);
}
@SuppressWarnings("unchecked")
private String encodeOptions(FacesContext facesContext, PickList pickList, List model) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
String var = pickList.getVar();
Converter converter = pickList.getConverter();
StringBuffer state = new StringBuffer();
for(Object item : model) {
facesContext.getExternalContext().getRequestMap().put(var, item);
String value = converter != null ? converter.getAsString(facesContext, pickList, pickList.getItemValue()) : (String) pickList.getItemValue();
writer.startElement("option", null);
writer.writeAttribute("value", value, null);
writer.write(pickList.getItemLabel());
writer.endElement("option");
state.append(value);
state.append(";");
}
facesContext.getExternalContext().getRequestMap().remove(var);
return state.toString();
}
private void encodeListStateHolder(FacesContext facesContext, String clientId, String value) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
writer.startElement("input", null);
writer.writeAttribute("type", "hidden", null);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("name", clientId, null);
writer.writeAttribute("value", value, null);
writer.endElement("input");
}
@Override
@SuppressWarnings("unchecked")
public Object getConvertedValue(FacesContext facesContext, UIComponent component, Object submittedValue) throws ConverterException {
PickList pickList = (PickList) component;
String[] value = (String[]) submittedValue;
String[] sourceList = value[0].split(";");
String[] targetList = value[1].split(";");
DualListModel model = new DualListModel();
doConvertValue(facesContext, pickList, sourceList, model.getSource());
doConvertValue(facesContext, pickList, targetList, model.getTarget());
return model;
}
@SuppressWarnings("unchecked")
private void doConvertValue(FacesContext facesContext, PickList pickList, String[] values, List model) {
Converter converter = pickList.getConverter();
for(String value : values) {
if(isValueBlank(value))
continue;
String val = value.trim();
Object convertedValue = converter != null ? converter.getAsObject(facesContext, pickList, val) : val;
if(convertedValue != null)
model.add(convertedValue);
}
}
}