/*
* 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.selectmanymenu;
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.component.UISelectMany;
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 org.primefaces.component.column.Column;
import org.primefaces.context.RequestContext;
import org.primefaces.renderkit.RendererUtils;
import org.primefaces.renderkit.SelectManyRenderer;
import org.primefaces.util.WidgetBuilder;
public class SelectManyMenuRenderer extends SelectManyRenderer {
@Override
public Object getConvertedValue(FacesContext context, UIComponent component, Object submittedValue) throws ConverterException {
return context.getRenderKit().getRenderer("javax.faces.SelectMany", "javax.faces.Menu").getConvertedValue(context, component, submittedValue);
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
SelectManyMenu menu = (SelectManyMenu) component;
encodeMarkup(context, menu);
encodeScript(context, menu);
}
protected void encodeMarkup(FacesContext context, SelectManyMenu menu) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = menu.getClientId(context);
List<SelectItem> selectItems = getSelectItems(context, menu);
String style = menu.getStyle();
String styleClass = menu.getStyleClass();
styleClass = styleClass == null ? SelectManyMenu.CONTAINER_CLASS : SelectManyMenu.CONTAINER_CLASS + " " + styleClass;
styleClass = menu.isDisabled() ? styleClass + " ui-state-disabled" : styleClass;
styleClass = !menu.isValid() ? styleClass + " ui-state-error" : styleClass;
writer.startElement("div", menu);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleClass");
if(style != null) {
writer.writeAttribute("style", style, "style");
}
if(menu.isFilter()) {
encodeFilter(context, menu);
}
encodeInput(context, menu, clientId, selectItems);
encodeList(context, menu, selectItems);
writer.endElement("div");
}
protected void encodeScript(FacesContext context, SelectManyMenu menu) throws IOException {
String clientId = menu.getClientId(context);
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("SelectManyMenu", menu.resolveWidgetVar(), clientId)
.attr("disabled", menu.isDisabled(), false)
.attr("showCheckbox", menu.isShowCheckbox(), false);
if(menu.isFilter()) {
wb.attr("filter", true)
.attr("filterMatchMode", menu.getFilterMatchMode(), null)
.nativeAttr("filterFunction", menu.getFilterFunction(), null)
.attr("caseSensitive", menu.isCaseSensitive(), false);
}
wb.finish();
}
protected void encodeInput(FacesContext context, SelectManyMenu menu, String clientId, List<SelectItem> selectItems) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String inputid = clientId + "_input";
writer.startElement("div", null);
writer.writeAttribute("class", "ui-helper-hidden-accessible", null);
writer.startElement("select", null);
writer.writeAttribute("id", inputid, "id");
writer.writeAttribute("name", inputid, null);
writer.writeAttribute("multiple", "multiple", null);
writer.writeAttribute("size", "2", null); //prevent browser to send value when no item is selected
renderDomEvents(context, menu, SelectManyMenu.DOM_EVENTS);
if(menu.getTabindex() != null) {
writer.writeAttribute("tabindex", menu.getTabindex(), null);
}
if(RequestContext.getCurrentInstance().getApplicationContext().getConfig().isClientSideValidationEnabled()) {
renderValidationMetadata(context, menu);
}
encodeSelectItems(context, menu, selectItems);
writer.endElement("select");
writer.endElement("div");
}
protected void encodeList(FacesContext context, SelectManyMenu menu, List<SelectItem> selectItems) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Converter converter = menu.getConverter();
Object values = getValues(menu);
Object submittedValues = getSubmittedValues(menu);
boolean customContent = menu.getVar() != null;
boolean showCheckbox = menu.isShowCheckbox();
writer.startElement("div", menu);
writer.writeAttribute("class", SelectManyMenu.LIST_CONTAINER_CLASS, null);
writer.writeAttribute("style", "height:" + calculateWrapperHeight(menu, selectItems.size()), null);
if(customContent) {
writer.startElement("table", null);
writer.writeAttribute("class", SelectManyMenu.LIST_CLASS, null);
writer.startElement("tbody", null);
for(SelectItem selectItem : selectItems) {
encodeItem(context, menu, selectItem, values, submittedValues, converter, customContent, showCheckbox);
}
writer.endElement("tbody");
writer.endElement("table");
}
else {
writer.startElement("ul", null);
writer.writeAttribute("class", SelectManyMenu.LIST_CLASS, null);
for(SelectItem selectItem : selectItems) {
encodeItem(context, menu, selectItem, values, submittedValues, converter, customContent, showCheckbox);
}
writer.endElement("ul");
}
writer.endElement("div");
}
protected void encodeItem(FacesContext context, SelectManyMenu menu, SelectItem option, Object values, Object submittedValues,
Converter converter, boolean customContent, boolean showCheckbox) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String itemValueAsString = getOptionAsString(context, menu, converter, option.getValue());
boolean disabled = option.isDisabled() || menu.isDisabled();
String itemClass = disabled ? SelectManyMenu.ITEM_CLASS + " ui-state-disabled" : SelectManyMenu.ITEM_CLASS;
Object valuesArray;
Object itemValue;
if(submittedValues != null) {
valuesArray = submittedValues;
itemValue = itemValueAsString;
} else {
valuesArray = values;
itemValue = option.getValue();
}
boolean selected = isSelected(context, menu, itemValue, valuesArray, converter);
if(option.isNoSelectionOption() && values != null && !selected) {
return;
}
if(selected) {
itemClass = itemClass + " ui-state-highlight";
}
if(customContent) {
String var = menu.getVar();
context.getExternalContext().getRequestMap().put(var, option.getValue());
writer.startElement("tr", null);
writer.writeAttribute("class", itemClass, null);
if(option.getDescription() != null) {
writer.writeAttribute("title", option.getDescription(), null);
}
if(showCheckbox) {
writer.startElement("td", null);
RendererUtils.encodeCheckbox(context, selected);
writer.endElement("td");
}
for(UIComponent child : menu.getChildren()) {
if(child instanceof Column && child.isRendered()) {
writer.startElement("td", null);
renderChildren(context, child);
writer.endElement("td");
}
}
writer.endElement("tr");
}
else {
writer.startElement("li", null);
writer.writeAttribute("class", itemClass, null);
if(showCheckbox) {
RendererUtils.encodeCheckbox(context, selected);
}
if(option.isEscape()) {
writer.writeText(option.getLabel(), null);
} else {
writer.write(option.getLabel());
}
writer.endElement("li");
}
}
protected void encodeSelectItems(FacesContext context, SelectManyMenu menu, List<SelectItem> selectItems) throws IOException {
Converter converter = menu.getConverter();
Object values = getValues(menu);
Object submittedValues = getSubmittedValues(menu);
for(SelectItem selectItem : selectItems) {
encodeOption(context, menu, selectItem, values, submittedValues, converter);
}
}
protected void encodeOption(FacesContext context, SelectManyMenu menu, SelectItem option, Object values, Object submittedValues, Converter converter) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String itemValueAsString = getOptionAsString(context, menu, converter, option.getValue());
boolean disabled = option.isDisabled() || menu.isDisabled();
Object valuesArray;
Object itemValue;
if(submittedValues != null) {
valuesArray = submittedValues;
itemValue = itemValueAsString;
} else {
valuesArray = values;
itemValue = option.getValue();
}
boolean selected = isSelected(context, menu, itemValue, valuesArray, converter);
if(option.isNoSelectionOption() && values != null && !selected) {
return;
}
writer.startElement("option", null);
writer.writeAttribute("value", itemValueAsString, null);
if(disabled) writer.writeAttribute("disabled", "disabled", null);
if(selected) writer.writeAttribute("selected", "selected", null);
writer.write(option.getLabel());
writer.endElement("option");
}
protected void encodeFilter(FacesContext context, SelectManyMenu menu) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String id = menu.getClientId(context) + "_filter";
writer.startElement("div", null);
writer.writeAttribute("class", SelectManyMenu.FILTER_CONTAINER_CLASS, null);
writer.startElement("span", null);
writer.writeAttribute("class", SelectManyMenu.FILTER_ICON_CLASS, id);
writer.endElement("span");
writer.startElement("input", null);
writer.writeAttribute("class", SelectManyMenu.FILTER_CLASS, null);
writer.writeAttribute("id", id, null);
writer.writeAttribute("name", id, null);
writer.writeAttribute("type", "text", null);
writer.writeAttribute("autocomplete", "off", null);
writer.endElement("input");
writer.endElement("div");
}
protected String calculateWrapperHeight(SelectManyMenu menu, int itemSize) {
int height = menu.getScrollHeight();
if(height != Integer.MAX_VALUE) {
return height + "px";
} else if(itemSize > 10) {
return 200 + "px";
}
return "auto";
}
@Override
protected String getSubmitParam(FacesContext context, UISelectMany selectMany) {
return selectMany.getClientId(context) + "_input";
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
//Rendering happens on encodeEnd
}
@Override
public boolean getRendersChildren() {
return true;
}
@Override
public String getHighlighter() {
return "listbox";
}
}