/*
* 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.picklist;
import java.io.IOException;
import java.util.Iterator;
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.component.column.Column;
import org.primefaces.model.DualListModel;
import org.primefaces.renderkit.CoreRenderer;
public class PickListRenderer extends CoreRenderer {
@Override
public void decode(FacesContext context, UIComponent component) {
PickList pickList = (PickList) component;
String clientId = pickList.getClientId(context);
Map<String,String> params = context.getExternalContext().getRequestParameterMap();
String sourceParam = clientId + "_source";
String targetParam = clientId + "_target";
if(params.containsKey(sourceParam) && params.containsKey(targetParam)) {
pickList.setSubmittedValue(new String[]{params.get(sourceParam), params.get(targetParam)});
}
}
@Override
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
PickList pickList = (PickList) component;
encodeMarkup(facesContext, pickList);
encodeScript(facesContext, pickList);
}
protected void encodeMarkup(FacesContext context, PickList pickList) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = pickList.getClientId(context);
DualListModel model = (DualListModel) pickList.getValue();
String styleClass = pickList.getStyleClass();
styleClass = styleClass == null ? PickList.CONTAINER_CLASS : PickList.CONTAINER_CLASS + " " + styleClass;
writer.startElement("table", pickList);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, null);
if(pickList.getStyle() != null) {
writer.writeAttribute("style", pickList.getStyle(), null);
}
writer.startElement("tbody", null);
writer.startElement("tr", null);
//Target List Reorder Buttons
if(pickList.isShowSourceControls()) {
encodeListControls(context, pickList, PickList.SOURCE_CONTROLS);
}
//Source List
encodeList(context, pickList, clientId + "_source", PickList.SOURCE_CLASS, model.getSource(), pickList.getFacet("sourceCaption"));
//Buttons
writer.startElement("td", null);
encodeButton(context, pickList, pickList.getAddLabel(), PickList.ADD_BUTTON_CLASS);
encodeButton(context, pickList, pickList.getAddAllLabel(), PickList.ADD_ALL_BUTTON_CLASS);
encodeButton(context, pickList, pickList.getRemoveLabel(), PickList.REMOVE_BUTTON_CLASS);
encodeButton(context, pickList, pickList.getRemoveAllLabel(), PickList.REMOVE_ALL_BUTTON_CLASS);
writer.endElement("td");
//Target List
encodeList(context, pickList, clientId + "_target", PickList.TARGET_CLASS, model.getTarget(), pickList.getFacet("targetCaption"));
//Target List Reorder Buttons
if(pickList.isShowTargetControls()) {
encodeListControls(context, pickList, PickList.TARGET_CONTROLS);
}
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
}
protected void encodeScript(FacesContext context, PickList pickList) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = pickList.getClientId(context);
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write(pickList.resolveWidgetVar() + " = new PrimeFaces.widget.PickList('" + clientId + "', {");
writer.write("pojo:" + (pickList.getConverter() != null));
writer.write(",effect:'" + pickList.getEffect() + "'");
writer.write(",effectSpeed:'" + pickList.getEffectSpeed() + "'");
writer.write(",iconOnly:" + pickList.isIconOnly());
if(pickList.isShowSourceControls()) writer.write(",showSourceControls:true");
if(pickList.isShowTargetControls()) writer.write(",showTargetControls:true");
if(pickList.isDisabled()) writer.write(",disabled:true");
if(pickList.getOnTransfer() != null) writer.write((",onTransfer:function(e) {" + pickList.getOnTransfer() + ";}"));
writer.write("});");
writer.endElement("script");
}
protected void encodeListControls(FacesContext context, PickList pickList, String styleClass) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("td", null);
writer.writeAttribute("class", PickList.SOURCE_CONTROLS, null);
encodeButton(context, pickList, pickList.getMoveUpLabel(), PickList.MOVE_UP_BUTTON_CLASS);
encodeButton(context, pickList, pickList.getMoveTopLabel(), PickList.MOVE_TOP_BUTTON_CLASS);
encodeButton(context, pickList, pickList.getMoveDownLabel(), PickList.MOVE_DOWN_BUTTON_CLASS);
encodeButton(context, pickList, pickList.getMoveBottomLabel(), PickList.MOVE_BOTTOM_BUTTON_CLASS);
writer.endElement("td");
}
protected void encodeCaption(FacesContext context, UIComponent caption) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("div", null);
writer.writeAttribute("class", PickList.CAPTION_CLASS, null);
caption.encodeAll(context);
writer.endElement("div");
}
protected void encodeButton(FacesContext context, PickList pickList, String label, String styleClass) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("button", null);
writer.writeAttribute("type", "button", null);
writer.writeAttribute("class", styleClass, null);
writer.write(label);
writer.endElement("button");
}
protected void encodeList(FacesContext context, PickList pickList, String listId, String styleClass, List model, UIComponent caption) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("td", null);
if(caption != null) {
encodeCaption(context, caption);
styleClass += " ui-corner-bottom";
}
else {
styleClass += " ui-corner-all";
}
writer.startElement("ul", null);
writer.writeAttribute("class", styleClass, null);
String values = encodeOptions(context, pickList, model);
writer.endElement("ul");
encodeListStateHolder(context, listId, values);
writer.endElement("ul");
}
@SuppressWarnings("unchecked")
protected String encodeOptions(FacesContext context, PickList pickList, List model) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String var = pickList.getVar();
Converter converter = pickList.getConverter();
StringBuilder state = new StringBuilder();
for(Iterator it = model.iterator(); it.hasNext();) {
Object item = it.next();
context.getExternalContext().getRequestMap().put(var, item);
String value = converter != null ? converter.getAsString(context, pickList, pickList.getItemValue()) : pickList.getItemValue().toString();
writer.startElement("li", null);
writer.writeAttribute("class", PickList.ITEM_CLASS, null);
if(pickList.getChildCount() > 0) {
writer.startElement("table", null);
writer.startElement("tbody", null);
writer.startElement("tr", null);
for(UIComponent kid : pickList.getChildren()) {
if(kid instanceof Column && kid.isRendered()) {
Column column = (Column) kid;
writer.startElement("td", null);
if(column.getStyle() != null) writer.writeAttribute("style", column.getStyle(), null);
if(column.getStyleClass() != null) writer.writeAttribute("class", column.getStyleClass(), null);
kid.encodeAll(context);
writer.endElement("td");
}
}
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
}
else {
writer.writeText(pickList.getItemLabel(), null);
}
writer.endElement("li");
state.append(value);
if(it.hasNext()) {
state.append(",");
}
}
context.getExternalContext().getRequestMap().remove(var);
return state.toString();
}
protected void encodeListStateHolder(FacesContext context, String clientId, String values) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("input", null);
writer.writeAttribute("type", "hidden", null);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("name", clientId, null);
writer.writeAttribute("value", values, 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")
protected 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);
}
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
//Rendering happens on encodeEnd
}
@Override
public boolean getRendersChildren() {
return true;
}
}