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org.primefaces.component.multiselectlistbox.MultiSelectListboxRenderer Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* 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.multiselectlistbox;
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.component.UISelectOne;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import javax.faces.model.SelectItem;
import javax.faces.model.SelectItemGroup;
import org.primefaces.renderkit.SelectOneRenderer;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.WidgetBuilder;
public class MultiSelectListboxRenderer extends SelectOneRenderer {
@Override
public Object getConvertedValue(FacesContext context, UIComponent component, Object submittedValue) throws ConverterException {
return context.getRenderKit().getRenderer("javax.faces.SelectOne", "javax.faces.Listbox").getConvertedValue(context, component, submittedValue);
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
MultiSelectListbox listbox = (MultiSelectListbox) component;
encodeMarkup(context, listbox);
encodeScript(context, listbox);
}
protected void encodeMarkup(FacesContext context, MultiSelectListbox listbox) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = listbox.getClientId(context);
List selectItems = getSelectItems(context, listbox);
String style = listbox.getStyle();
String styleClass = listbox.getStyleClass();
styleClass = styleClass == null ? MultiSelectListbox.CONTAINER_CLASS : MultiSelectListbox.CONTAINER_CLASS + " " + styleClass;
styleClass = listbox.isDisabled() ? styleClass + " ui-state-disabled" : styleClass;
styleClass = !listbox.isValid() ? styleClass + " ui-state-error" : styleClass;
writer.startElement("div", listbox);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleClass");
if(style != null) {
writer.writeAttribute("style", style, "style");
}
encodeInput(context, listbox);
encodeLists(context, listbox, selectItems);
writer.endElement("div");
}
protected void encodeLists(FacesContext context, MultiSelectListbox listbox, List itemList) throws IOException {
ResponseWriter writer = context.getResponseWriter();
SelectItem[] items = (itemList == null) ? null : itemList.toArray(new SelectItem[itemList.size()]);
String header = listbox.getHeader();
String listStyleClass = MultiSelectListbox.LIST_CLASS;
writer.startElement("div", listbox);
writer.writeAttribute("class", MultiSelectListbox.LIST_CONTAINER_CLASS, null);
if(header != null) {
listStyleClass = listStyleClass + " ui-corner-bottom";
writer.startElement("div", listbox);
writer.writeAttribute("class", MultiSelectListbox.LIST_HEADER_CLASS, null);
writer.writeText(header, null);
writer.endElement("div");
}
else {
listStyleClass = listStyleClass + " ui-corner-all";
}
writer.startElement("ul", listbox);
writer.writeAttribute("class", listStyleClass, null);
if(items != null) {
encodeListItems(context, listbox, items);
}
writer.endElement("ul");
writer.endElement("div");
}
protected void encodeListItems(FacesContext context, MultiSelectListbox listbox, SelectItem[] items) throws IOException {
if(items != null && items.length > 0) {
ResponseWriter writer = context.getResponseWriter();
Converter converter = ComponentUtils.getConverter(context, listbox);
String itemValue = null;
for (int i = 0; i < items.length; i++) {
SelectItem item = items[i];
itemValue = converter != null ? converter.getAsString(context, listbox, item.getValue()) : String.valueOf(item.getValue());
writer.startElement("li", null);
writer.writeAttribute("class", MultiSelectListbox.ITEM_CLASS, null);
writer.writeAttribute("data-value", itemValue, null);
writer.startElement("span", listbox);
writer.writeText(item.getLabel(), null);
writer.endElement("span");
if(item instanceof SelectItemGroup) {
SelectItemGroup group = (SelectItemGroup) item;
SelectItem[] groupItems = group.getSelectItems();
if(groupItems != null && groupItems.length > 0)
encodeGroupItems(context, listbox, group.getSelectItems());
}
writer.endElement("li");
}
}
}
protected void encodeGroupItems(FacesContext context, MultiSelectListbox listbox, SelectItem[] selectItems) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("ul", listbox);
writer.writeAttribute("class", "ui-helper-hidden", null);
encodeListItems(context, listbox, selectItems);
writer.endElement("ul");
}
protected void encodeScript(FacesContext context, MultiSelectListbox listbox) throws IOException {
String clientId = listbox.getClientId(context);
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("MultiSelectListbox", listbox.resolveWidgetVar(), clientId)
.attr("effect", listbox.getEffect(), null)
.attr("showHeaders", listbox.isShowHeaders(), false)
.finish();
}
protected void encodeInput(FacesContext context, MultiSelectListbox listbox) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String inputId = listbox.getClientId(context) + "_input";
String valueToRender = ComponentUtils.getValueToRender(context, listbox);
writer.startElement("input", null);
writer.writeAttribute("type", "hidden", null);
writer.writeAttribute("id", inputId, null);
writer.writeAttribute("name", inputId, null);
writer.writeAttribute("autocomplete", "off", null);
if(valueToRender != null) {
writer.writeAttribute("value", valueToRender , null);
}
writer.endElement("input");
}
@Override
protected String getSubmitParam(FacesContext context, UISelectOne selectOne) {
return selectOne.getClientId(context) + "_input";
}
}