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org.primefaces.component.cascadeselect.CascadeSelectRenderer Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright (c) 2009-2023 PrimeTek Informatics
*
* 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.cascadeselect;
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 javax.faces.render.Renderer;
import org.primefaces.expression.SearchExpressionFacade;
import org.primefaces.expression.SearchExpressionUtils;
import org.primefaces.renderkit.SelectOneRenderer;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.HTML;
import org.primefaces.util.LangUtils;
import org.primefaces.util.WidgetBuilder;
public class CascadeSelectRenderer 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 {
CascadeSelect cascadeSelect = (CascadeSelect) component;
encodeMarkup(context, cascadeSelect);
encodeScript(context, cascadeSelect);
}
protected void encodeMarkup(FacesContext context, CascadeSelect cascadeSelect) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = cascadeSelect.getClientId(context);
List selectItems = getSelectItems(context, cascadeSelect);
String style = cascadeSelect.getStyle();
String styleClass = getStyleClassBuilder(context)
.add(CascadeSelect.STYLE_CLASS)
.add(cascadeSelect.isDisabled(), "ui-state-disabled")
.add(cascadeSelect.getStyleClass())
.build();
writer.startElement("div", null);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleClass");
if (style != null) {
writer.writeAttribute("style", style, "style");
}
renderARIACombobox(context, cascadeSelect);
String valueToRender = ComponentUtils.getValueToRender(context, cascadeSelect);
encodeInput(context, cascadeSelect, valueToRender);
encodeLabel(context, cascadeSelect, selectItems, valueToRender);
encodeTrigger(context);
encodePanel(context, cascadeSelect, selectItems);
writer.endElement("div");
}
protected void encodeInput(FacesContext context, CascadeSelect cascadeSelect, String valueToRender) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String inputId = cascadeSelect.getInputClientId();
writer.startElement("div", null);
writer.writeAttribute("class", "ui-helper-hidden-accessible", null);
writer.startElement("input", null);
writer.writeAttribute("id", inputId, null);
writer.writeAttribute("name", inputId, null);
writer.writeAttribute("tabindex", cascadeSelect.getTabindex(), null);
writer.writeAttribute("type", "text", null);
writer.writeAttribute("autocomplete", "off", null);
if (valueToRender != null) {
writer.writeAttribute("value", valueToRender, null);
}
renderAccessibilityAttributes(context, cascadeSelect);
renderDomEvents(context, cascadeSelect, HTML.BLUR_FOCUS_EVENTS);
writer.endElement("input");
writer.endElement("div");
}
protected void encodeLabel(FacesContext context, CascadeSelect cascadeSelect, List itemList, String valueToRender) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Converter converter = ComponentUtils.getConverter(context, cascadeSelect);
String itemLabel = valueToRender;
SelectItem foundItem = findSelectItemByValue(context, cascadeSelect, converter, itemList, valueToRender);
if (foundItem != null) {
itemLabel = foundItem.getLabel();
}
String placeholder = LangUtils.isNotBlank(itemLabel) ? itemLabel : cascadeSelect.getPlaceholder();
String styleClass = getStyleClassBuilder(context)
.add(placeholder != null, CascadeSelect.LABEL_CLASS)
.add(placeholder == null, CascadeSelect.LABEL_EMPTY_CLASS)
.build();
writer.startElement("span", null);
writer.writeAttribute("class", styleClass, null);
if (LangUtils.isNotBlank(placeholder)) {
writer.writeText(placeholder, null);
}
writer.endElement("span");
}
protected void encodeTrigger(FacesContext context) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("div", null);
writer.writeAttribute("class", CascadeSelect.TRIGGER_CLASS, null);
writer.writeAttribute(HTML.ARIA_ROLE, "button", null);
writer.writeAttribute(HTML.ARIA_HASPOPUP, "listbox", null);
writer.writeAttribute(HTML.ARIA_EXPANDED, "false", null);
writer.startElement("span", null);
writer.writeAttribute("class", CascadeSelect.TRIGGER_ICON_CLASS, null);
writer.endElement("span");
writer.endElement("div");
}
protected void encodePanel(FacesContext context, CascadeSelect cascadeSelect, List itemList) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String panelId = cascadeSelect.getPanelClientId();
SelectItem[] items = (itemList == null) ? null : itemList.toArray(new SelectItem[itemList.size()]);
writer.startElement("div", null);
writer.writeAttribute("id", panelId, null);
writer.writeAttribute("class", CascadeSelect.PANEL_CLASS, null);
writer.startElement("div", null);
writer.writeAttribute("class", CascadeSelect.ITEMS_WRAPPER_CLASS, null);
encodeList(context, cascadeSelect, items, false);
writer.endElement("div");
writer.endElement("div");
}
protected void encodeList(FacesContext context, CascadeSelect cascadeSelect, SelectItem[] items, boolean isSublist) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String styleClass = isSublist ? CascadeSelect.PANEL_ITEMS_CLASS + " " + CascadeSelect.SUBLIST_CLASS : CascadeSelect.PANEL_ITEMS_CLASS;
writer.startElement("ul", null);
writer.writeAttribute("class", styleClass, null);
writer.writeAttribute("role", "listbox", null);
writer.writeAttribute("aria-orientation", "horizontal", null);
renderARIARequired(context, cascadeSelect);
encodeListItems(context, cascadeSelect, items);
writer.endElement("ul");
}
protected void encodeListItems(FacesContext context, CascadeSelect cascadeSelect, SelectItem[] selectItems) throws IOException {
if (selectItems != null && selectItems.length > 0) {
ResponseWriter writer = context.getResponseWriter();
UIComponent contentFacet = cascadeSelect.getFacet("content");
Converter converter = ComponentUtils.getConverter(context, cascadeSelect);
String var = cascadeSelect.getVar();
for (SelectItem selectItem : selectItems) {
boolean isGroup = selectItem instanceof SelectItemGroup;
Object itemValue = selectItem.getValue();
String itemLabel = selectItem.getLabel();
String itemValueAsString = getOptionAsString(context, cascadeSelect, converter, selectItem.getValue());
String itemStyleClass = getStyleClassBuilder(context)
.add(CascadeSelect.ITEM_CLASS)
.add(isGroup, CascadeSelect.ITEM_GROUP_CLASS)
.build();
if (var != null) {
context.getExternalContext().getRequestMap().put(var, itemValue);
}
writer.startElement("li", null);
writer.writeAttribute("class", itemStyleClass, null);
writer.writeAttribute("data-value", itemValueAsString, null);
writer.writeAttribute("data-label", itemLabel, null);
writer.startElement("div", null);
writer.writeAttribute("class", CascadeSelect.ITEM_CONTENT_CLASS, null);
writer.writeAttribute("tabindex", "0", null);
if (ComponentUtils.shouldRenderFacet(contentFacet)) {
contentFacet.encodeAll(context);
}
else {
writer.startElement("span", cascadeSelect);
writer.writeAttribute("class", CascadeSelect.ITEM_TEXT_CLASS, null);
writer.writeText(itemLabel, null);
writer.endElement("span");
}
if (isGroup) {
writer.startElement("span", cascadeSelect);
writer.writeAttribute("class", CascadeSelect.GROUP_ICON_CLASS, null);
writer.endElement("span");
}
writer.endElement("div");
if (isGroup) {
SelectItemGroup group = (SelectItemGroup) selectItem;
SelectItem[] groupItems = group.getSelectItems();
if (groupItems != null && groupItems.length > 0) {
encodeList(context, cascadeSelect, group.getSelectItems(), true);
}
}
writer.endElement("li");
}
if (var != null) {
context.getExternalContext().getRequestMap().put(var, null);
}
}
}
protected void encodeScript(FacesContext context, CascadeSelect cascadeSelect) throws IOException {
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("CascadeSelect", cascadeSelect)
.attr("appendTo", SearchExpressionFacade.resolveClientId(context, cascadeSelect, cascadeSelect.getAppendTo(),
SearchExpressionUtils.SET_RESOLVE_CLIENT_SIDE), null);
encodeClientBehaviors(context, cascadeSelect);
wb.finish();
}
@Override
public void encodeChildren(FacesContext facesContext, UIComponent component) throws IOException {
//Rendering happens on encodeEnd
}
@Override
public boolean getRendersChildren() {
return true;
}
@Override
protected String getSubmitParam(FacesContext context, UISelectOne selectOne) {
return selectOne.getClientId(context) + "_input";
}
}
