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PrimeFaces is one of the most popular UI libraries in Java EE Ecosystem and widely used by software companies, world renowned brands, banks, financial institutions, insurance companies, universities and more.
/**
* The MIT License
*
* Copyright (c) 2009-2019 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.megamenu;
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.component.menu.AbstractMenu;
import org.primefaces.component.menu.BaseMenuRenderer;
import org.primefaces.component.menu.Menu;
import org.primefaces.component.separator.UISeparator;
import org.primefaces.model.menu.*;
import org.primefaces.util.HTML;
import org.primefaces.util.WidgetBuilder;
public class MegaMenuRenderer extends BaseMenuRenderer {
@Override
protected void encodeScript(FacesContext context, AbstractMenu abstractMenu) throws IOException {
MegaMenu menu = (MegaMenu) abstractMenu;
String clientId = menu.getClientId(context);
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("MegaMenu", menu.resolveWidgetVar(), clientId)
.attr("autoDisplay", menu.isAutoDisplay())
.attr("activeIndex", menu.getActiveIndex(), Integer.MIN_VALUE);
wb.finish();
}
@Override
protected void encodeMarkup(FacesContext context, AbstractMenu abstractMenu) throws IOException {
ResponseWriter writer = context.getResponseWriter();
MegaMenu menu = (MegaMenu) abstractMenu;
boolean vertical = menu.getOrientation().equals("vertical");
String clientId = menu.getClientId(context);
String style = menu.getStyle();
String styleClass = menu.getStyleClass();
styleClass = styleClass == null ? MegaMenu.CONTAINER_CLASS : MegaMenu.CONTAINER_CLASS + " " + styleClass;
if (vertical) {
styleClass = styleClass + " " + MegaMenu.VERTICAL_CLASS;
}
writer.startElement("div", menu);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleClass");
if (style != null) {
writer.writeAttribute("style", style, "style");
}
writer.writeAttribute("role", "menubar", null);
encodeKeyboardTarget(context, menu);
writer.startElement("ul", null);
writer.writeAttribute("class", Menu.LIST_CLASS, null);
if (menu.getElementsCount() > 0) {
encodeRootItems(context, menu);
}
UIComponent optionsFacet = menu.getFacet("options");
if (optionsFacet != null) {
writer.startElement("li", null);
writer.writeAttribute("class", Menu.OPTIONS_CLASS, null);
writer.writeAttribute("role", "menuitem", null);
optionsFacet.encodeAll(context);
writer.endElement("li");
}
writer.endElement("ul");
writer.endElement("div");
}
protected void encodeRootItems(FacesContext context, MegaMenu menu) throws IOException {
ResponseWriter writer = context.getResponseWriter();
List elements = menu.getElements();
for (MenuElement element : elements) {
if (element.isRendered()) {
if (element instanceof MenuItem) {
writer.startElement("li", null);
writer.writeAttribute("class", Menu.MENUITEM_CLASS, null);
writer.writeAttribute("role", "menuitem", null);
encodeMenuItem(context, menu, (MenuItem) element, "-1");
writer.endElement("li");
}
else if (element instanceof Submenu) {
encodeRootSubmenu(context, menu, (Submenu) element);
}
else if (element instanceof Separator) {
encodeSeparator(context, (Separator) element);
}
}
}
}
protected void encodeRootSubmenu(FacesContext context, MegaMenu menu, Submenu submenu) throws IOException {
ResponseWriter writer = context.getResponseWriter();
boolean vertical = menu.getOrientation().equals("vertical");
String icon = submenu.getIcon();
String label = submenu.getLabel();
String style = submenu.getStyle();
String styleClass = submenu.getStyleClass();
styleClass = styleClass == null ? Menu.TIERED_SUBMENU_CLASS : Menu.TIERED_SUBMENU_CLASS + " " + styleClass;
writer.startElement("li", null);
writer.writeAttribute("class", styleClass, null);
if (style != null) {
writer.writeAttribute("style", style, null);
}
writer.writeAttribute("role", "menuitem", null);
writer.writeAttribute(HTML.ARIA_HASPOPUP, "true", null);
//title
writer.startElement("a", null);
writer.writeAttribute("href", "#", null);
writer.writeAttribute("class", Menu.SUBMENU_LINK_CLASS, null);
writer.writeAttribute("tabindex", "-1", null);
if (icon != null) {
writer.startElement("span", null);
writer.writeAttribute("class", Menu.MENUITEM_ICON_CLASS + " " + icon, null);
writer.endElement("span");
}
if (label != null) {
writer.startElement("span", null);
writer.writeAttribute("class", Menu.MENUITEM_TEXT_CLASS, null);
writer.writeText(submenu.getLabel(), "value");
writer.endElement("span");
}
//submenu icon
String submenuIcon = (vertical) ? Menu.SUBMENU_RIGHT_ICON_CLASS : Menu.SUBMENU_DOWN_ICON_CLASS;
writer.startElement("span", null);
writer.writeAttribute("class", submenuIcon, null);
writer.endElement("span");
writer.endElement("a");
//submenus
if (submenu.getElementsCount() > 0) {
List submenuElements = submenu.getElements();
writer.startElement("ul", null);
writer.writeAttribute("class", Menu.TIERED_CHILD_SUBMENU_CLASS, null);
writer.writeAttribute("role", "menu", null);
writer.startElement("table", null);
writer.writeAttribute("role", "presentation", null);
writer.startElement("tbody", null);
writer.startElement("tr", null);
for (MenuElement submenuElement : submenuElements) {
if (submenuElement.isRendered() && submenuElement instanceof MenuColumn) {
encodeColumn(context, menu, (MenuColumn) submenuElement);
}
}
writer.endElement("tr");
writer.endElement("tbody");
writer.endElement("table");
writer.endElement("ul");
}
writer.endElement("li");
}
protected void encodeColumn(FacesContext context, MegaMenu menu, MenuColumn column) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("td", null);
if (column.getStyle() != null) {
writer.writeAttribute("style", column.getStyle(), null);
}
if (column.getStyleClass() != null) {
writer.writeAttribute("class", column.getStyleClass(), null);
}
if (column.getElementsCount() > 0) {
List columnElements = column.getElements();
for (Object element : columnElements) {
if (element instanceof MenuElement) {
if (((MenuElement) element).isRendered()) {
if (element instanceof Submenu) {
encodeDescendantSubmenu(context, menu, (Submenu) element);
}
else if (element instanceof Separator) {
encodeSubmenuSeparator(context, (Separator) element);
}
}
}
else if (element instanceof UIComponent) {
((UIComponent) element).encodeAll(context);
}
}
}
writer.endElement("td");
}
protected void encodeDescendantSubmenu(FacesContext context, MegaMenu menu, Submenu submenu) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String label = submenu.getLabel();
String style = submenu.getStyle();
String styleClass = submenu.getStyleClass();
styleClass = styleClass == null ? Menu.SUBMENU_TITLE_CLASS : Menu.SUBMENU_TITLE_CLASS + " " + styleClass;
writer.startElement("ul", null);
writer.writeAttribute("class", Menu.LIST_CLASS, null);
writer.writeAttribute("role", "menu", null);
//title
writer.startElement("li", null);
writer.writeAttribute("class", styleClass, null);
if (style != null) {
writer.writeAttribute("style", style, null);
}
writer.startElement("span", null);
if (label != null) {
writer.writeText(label, "value");
}
writer.endElement("span");
writer.endElement("li");
//menuitems
if (submenu.getElementsCount() > 0) {
List submenuElements = submenu.getElements();
for (MenuElement submenuElement : submenuElements) {
if (submenuElement.isRendered()) {
if (submenuElement instanceof MenuItem) {
writer.startElement("li", null);
writer.writeAttribute("class", Menu.MENUITEM_CLASS, null);
writer.writeAttribute("role", "menuitem", null);
encodeMenuItem(context, menu, (MenuItem) submenuElement, "-1");
writer.endElement("li");
}
else if (submenuElement instanceof Separator) {
encodeSeparator(context, (Separator) submenuElement);
}
}
}
}
writer.endElement("ul");
}
protected void encodeSubmenuSeparator(FacesContext context, Separator separator) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String styleClass = separator.getStyleClass();
styleClass = styleClass == null ? UISeparator.DEFAULT_STYLE_CLASS : UISeparator.DEFAULT_STYLE_CLASS + " " + styleClass;
writer.startElement("hr", null);
writer.writeAttribute("class", styleClass, "styleClass");
if (separator.getTitle() != null) {
writer.writeAttribute("title", separator.getTitle(), "title");
}
if (separator.getStyle() != null) {
writer.writeAttribute("style", separator.getStyle(), "style");
}
writer.endElement("hr");
}
}