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org.primefaces.component.selectonelistbox.SelectOneListboxRenderer Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright (c) 2009-2021 PrimeTek
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.component.selectonelistbox;
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.render.Renderer;
import org.primefaces.component.column.Column;
import org.primefaces.renderkit.InputRenderer;
import org.primefaces.renderkit.SelectOneRenderer;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.HTML;
import org.primefaces.util.MessageFactory;
import org.primefaces.util.WidgetBuilder;
public class SelectOneListboxRenderer extends SelectOneRenderer {
@Override
public Object getConvertedValue(FacesContext context, UIComponent component, Object submittedValue) throws ConverterException {
Renderer renderer = ComponentUtils.getUnwrappedRenderer(
context,
"javax.faces.SelectOne",
"javax.faces.Listbox");
return renderer.getConvertedValue(context, component, submittedValue);
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
SelectOneListbox listbox = (SelectOneListbox) component;
encodeMarkup(context, listbox);
encodeScript(context, listbox);
}
protected void encodeMarkup(FacesContext context, SelectOneListbox listbox) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = listbox.getClientId(context);
List selectItems = getSelectItems(context, listbox);
String style = listbox.getStyle();
String styleClass = createStyleClass(listbox, SelectOneListbox.CONTAINER_CLASS);
writer.startElement("div", listbox);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleClass");
if (style != null) {
writer.writeAttribute("style", style, "style");
}
if (listbox.isFilter()) {
encodeFilter(context, listbox);
}
encodeInput(context, listbox, clientId, selectItems);
encodeList(context, listbox, selectItems);
writer.endElement("div");
}
protected void encodeScript(FacesContext context, SelectOneListbox listbox) throws IOException {
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("SelectOneListbox", listbox)
.attr("disabled", listbox.isDisabled(), false);
if (listbox.isFilter()) {
wb.attr("filter", true)
.attr("filterMatchMode", listbox.getFilterMatchMode(), null)
.nativeAttr("filterFunction", listbox.getFilterFunction(), null)
.attr("caseSensitive", listbox.isCaseSensitive(), false);
}
wb.finish();
}
protected void encodeInput(FacesContext context, SelectOneListbox listbox, String clientId, List selectItems)
throws IOException {
ResponseWriter writer = context.getResponseWriter();
String inputid = clientId + "_input";
writer.startElement("div", listbox);
writer.writeAttribute("class", "ui-helper-hidden-accessible", null);
writer.startElement("select", listbox);
writer.writeAttribute("id", inputid, "id");
writer.writeAttribute("name", inputid, null);
writer.writeAttribute("size", "2", null); //prevent browser to send value when no item is selected
renderAccessibilityAttributes(context, listbox);
renderPassThruAttributes(context, listbox, HTML.TAB_INDEX);
renderDomEvents(context, listbox, SelectOneListbox.DOM_EVENTS);
renderValidationMetadata(context, listbox);
encodeSelectItems(context, listbox, selectItems);
writer.endElement("select");
writer.endElement("div");
}
protected void encodeList(FacesContext context, SelectOneListbox listbox, List selectItems) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Converter converter = listbox.getConverter();
Object values = getValues(listbox);
Object submittedValues = getSubmittedValues(listbox);
boolean customContent = listbox.getVar() != null;
writer.startElement("div", listbox);
writer.writeAttribute("class", SelectOneListbox.LIST_CONTAINER_CLASS, null);
writer.writeAttribute("style", "height:" + calculateWrapperHeight(listbox, countSelectItems(selectItems)), null);
if (customContent) {
writer.startElement("table", null);
writer.writeAttribute("class", SelectOneListbox.LIST_CLASS, null);
writer.startElement("tbody", null);
for (int i = 0; i < selectItems.size(); i++) {
SelectItem selectItem = selectItems.get(i);
encodeItem(context, listbox, selectItem, values, submittedValues, converter, customContent);
}
writer.endElement("tbody");
writer.endElement("table");
}
else {
writer.startElement("ul", null);
writer.writeAttribute("class", SelectOneListbox.LIST_CLASS, null);
for (int i = 0; i < selectItems.size(); i++) {
SelectItem selectItem = selectItems.get(i);
encodeItem(context, listbox, selectItem, values, submittedValues, converter, customContent);
}
writer.endElement("ul");
}
writer.endElement("div");
}
protected void encodeItem(FacesContext context, SelectOneListbox listbox, SelectItem option, Object values, Object submittedValues,
Converter converter, boolean customContent) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String itemValueAsString = getOptionAsString(context, listbox, converter, option.getValue());
boolean disabled = option.isDisabled() || listbox.isDisabled();
String itemClass = disabled ? SelectOneListbox.ITEM_CLASS + " ui-state-disabled" : SelectOneListbox.ITEM_CLASS;
Object valuesArray;
Object itemValue;
if (submittedValues != null) {
valuesArray = submittedValues;
itemValue = itemValueAsString;
}
else {
valuesArray = values;
itemValue = option.getValue();
}
boolean selected = isSelected(context, listbox, itemValue, valuesArray, converter);
if (option.isNoSelectionOption() && values != null && !selected) {
return;
}
if (selected) {
itemClass = itemClass + " ui-state-highlight";
}
if (customContent) {
String var = listbox.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);
}
for (UIComponent child : listbox.getChildren()) {
if (child instanceof Column && child.isRendered()) {
writer.startElement("td", null);
writer.startElement("span", null);
renderChildren(context, child);
writer.endElement("span");
writer.endElement("td");
}
}
writer.endElement("tr");
}
else {
writer.startElement("li", null);
writer.writeAttribute("class", itemClass, null);
writer.startElement("span", null);
if (option.isEscape()) {
writer.writeText(option.getLabel(), null);
}
else {
writer.write(option.getLabel());
}
writer.endElement("span");
writer.endElement("li");
}
}
protected void encodeSelectItems(FacesContext context, SelectOneListbox listbox, List selectItems) throws IOException {
Converter converter = listbox.getConverter();
Object values = getValues(listbox);
Object submittedValues = getSubmittedValues(listbox);
for (int i = 0; i < selectItems.size(); i++) {
SelectItem selectItem = selectItems.get(i);
encodeOption(context, listbox, selectItem, values, submittedValues, converter);
}
}
protected void encodeOption(FacesContext context, SelectOneListbox listbox, SelectItem option, Object values, Object submittedValues,
Converter converter) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String itemValueAsString = getOptionAsString(context, listbox, converter, option.getValue());
boolean disabled = option.isDisabled() || listbox.isDisabled();
Object valuesArray;
Object itemValue;
if (submittedValues != null) {
valuesArray = submittedValues;
itemValue = itemValueAsString;
}
else {
valuesArray = values;
itemValue = option.getValue();
}
boolean selected = isSelected(context, listbox, 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);
}
if (option.isEscape()) {
writer.writeText(option.getLabel(), null);
}
else {
writer.write(option.getLabel());
}
writer.endElement("option");
}
protected void encodeFilter(FacesContext context, SelectOneListbox listbox) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String id = listbox.getClientId(context) + "_filter";
boolean disabled = listbox.isDisabled();
String filterClass = disabled ? SelectOneListbox.FILTER_CLASS + " ui-state-disabled" : SelectOneListbox.FILTER_CLASS;
writer.startElement("div", null);
writer.writeAttribute("class", SelectOneListbox.FILTER_CONTAINER_CLASS, null);
writer.startElement("span", null);
writer.writeAttribute("class", SelectOneListbox.FILTER_ICON_CLASS, id);
writer.endElement("span");
writer.startElement("input", null);
writer.writeAttribute("class", filterClass, null);
writer.writeAttribute("id", id, null);
writer.writeAttribute("name", id, null);
writer.writeAttribute("type", "text", null);
writer.writeAttribute("autocomplete", "off", null);
writer.writeAttribute(HTML.ARIA_LABEL, MessageFactory.getMessage(InputRenderer.ARIA_FILTER), null);
if (disabled) {
writer.writeAttribute("disabled", "disabled", null);
}
writer.endElement("input");
writer.endElement("div");
}
protected String calculateWrapperHeight(SelectOneListbox listbox, int itemSize) {
int height = listbox.getScrollHeight();
if (height != Integer.MAX_VALUE) {
return height + "px";
}
else if (itemSize > 10) {
return 200 + "px";
}
return "auto";
}
@Override
protected String getSubmitParam(FacesContext context, UISelectOne selectOne) {
return selectOne.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";
}
}
