/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.renderkit.html;
import java.io.IOException;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.ajax4jsf.context.AjaxContext;
import org.ajax4jsf.javascript.JSFunction;
import org.ajax4jsf.renderkit.HeaderResourcesRendererBase;
import org.ajax4jsf.renderkit.RendererUtils.HTML;
import org.ajax4jsf.resource.InternetResource;
import org.richfaces.component.UIMenuGroup;
import org.richfaces.component.UIMenuItem;
import org.richfaces.component.UIMenuSeparator;
import org.richfaces.component.util.HtmlUtil;
import org.richfaces.renderkit.ScriptOptions;
/**
* @author Maksim Kaszynski
*
*/
public abstract class AbstractMenuRenderer extends HeaderResourcesRendererBase {
private final InternetResource[] scripts = {
new org.ajax4jsf.javascript.PrototypeScript(),
new org.ajax4jsf.javascript.AjaxScript(),
getResource("scripts/menu.js") };
@Override
protected InternetResource[] getScripts() {
return scripts;
}
@Override
protected InternetResource[] getStyles() {
return super.getStyles();
}
public void encodeScript(FacesContext context, UIComponent component) throws IOException {
StringBuffer buffer = new StringBuffer();
buffer.append(getLayerScript(context, component));
List children = component.getChildren();
for(Iterator it = children.iterator();it.hasNext();) {
buffer.append(getItemScript(context, (UIComponent) it.next()));
}
ResponseWriter out = context.getResponseWriter();
String script = buffer.append(";").toString();
out.write(script);
}
protected abstract String getLayerScript(FacesContext context, UIComponent layer);
protected String getItemScript(FacesContext context, UIComponent kid) {
String itemId = null;
boolean closeOnClick = true;
Integer flagGroup = null;
boolean disabled = false;
if (kid instanceof UIMenuItem) {
UIMenuItem menuItem = (UIMenuItem) kid;
itemId = kid.getClientId(context);
disabled = menuItem.isDisabled();
if (disabled) {
closeOnClick = false;
}
} else if (kid instanceof UIMenuGroup) {
UIMenuGroup menuGroup = (UIMenuGroup) kid;
itemId = kid.getClientId(context);
closeOnClick = false;
if ((disabled = menuGroup.isDisabled())) {
flagGroup = Integer.valueOf(2);
} else {
flagGroup = Integer.valueOf(1);
}
}
if (itemId != null) {
JSFunction function = new JSFunction(".addItem");
function.addParameter(itemId);
ScriptOptions options = new ScriptOptions(kid);
options.addEventHandler("onmouseout");
options.addEventHandler("onmouseover");
if (closeOnClick) {
options.addOption("closeOnClick", Boolean.TRUE);
}
options.addOption("flagGroup", flagGroup);
options.addOption("styleClass");
options.addOption("style");
options.addOption("itemClass");
options.addOption("itemStyle");
options.addOption("disabledItemClass");
options.addOption("disabledItemStyle");
options.addOption("selectItemClass");
options.addOption("labelClass");
options.addOption("selectedLabelClass");
options.addOption("disabledLabelClass");
options.addOption("selectClass");
options.addOption("selectStyle");
options.addOption("iconClass");
if (disabled) {
options.addOption("disabled", Boolean.TRUE);
}
options.addEventHandler("onselect");
function.addParameter(options);
return function.toScript();
}
return "";
}
public boolean getRendersChildren() {
return true;
}
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException {
List flatListOfNodes = new LinkedList();
String width = (String) component.getAttributes().get("popupWidth");
flatten(component.getChildren(), flatListOfNodes);
processLayer(context, component, width);
for (Iterator iter = flatListOfNodes.iterator(); iter.hasNext();) {
UIMenuGroup node = (UIMenuGroup) iter.next();
if (node.isRendered() && !node.isDisabled())
processLayer(context, node, width);
}
}
public void processLayer(FacesContext context, UIComponent layer, String width) throws IOException {
String clientId = layer.getClientId(context);
ResponseWriter writer = context.getResponseWriter();
writer.startElement(HTML.DIV_ELEM, layer);
writer.writeAttribute(HTML.id_ATTRIBUTE, clientId+"_menu", null);
processLayerStyles(context, layer, writer);
writer.startElement(HTML.DIV_ELEM, layer);
writer.writeAttribute(HTML.class_ATTRIBUTE, "rich-menu-list-bg", null);
encodeItems(context, layer);
writer.startElement(HTML.DIV_ELEM, layer);
writer.writeAttribute(HTML.class_ATTRIBUTE, "rich-menu-list-strut", null);
writer.startElement(HTML.DIV_ELEM, layer);
writer.writeAttribute(HTML.class_ATTRIBUTE, "rich-menu-list-strut", null);
writer.writeAttribute(HTML.style_ATTRIBUTE, width!=null && width.length() > 0 ? "width: " + HtmlUtil.qualifySize(width) : "", null);
writer.write(" ");
writer.endElement(HTML.DIV_ELEM);
writer.endElement(HTML.DIV_ELEM);
writer.endElement(HTML.DIV_ELEM);
writer.endElement(HTML.DIV_ELEM);
writer.startElement(HTML.SCRIPT_ELEM, layer);
writer.writeAttribute(HTML.id_ATTRIBUTE, clientId+"_menu_script", null);
writer.writeAttribute(HTML.TYPE_ATTR, "text/javascript", null);
encodeScript(context, layer);
writer.endElement(HTML.SCRIPT_ELEM);
AjaxContext ajaxContext = AjaxContext.getCurrentInstance();
Set renderedAreas = ajaxContext.getAjaxRenderedAreas();
renderedAreas.add(clientId + "_menu_script");
}
public void encodeItems(FacesContext context, UIComponent component) throws IOException {
List kids = component.getChildren();
Iterator it = kids.iterator();
while (it.hasNext()) {
UIComponent kid = (UIComponent)it.next();
if (kid instanceof UIMenuGroup || kid instanceof UIMenuItem || kid instanceof UIMenuSeparator) {
renderChild(context, kid);
}
}
}
private void flatten(List kids, List flatList){
if(kids != null){
for (Iterator iter = kids.iterator(); iter.hasNext();) {
UIComponent kid = (UIComponent) iter.next();
if (kid instanceof UIMenuGroup) {
UIMenuGroup node = (UIMenuGroup) kid;
flatList.add(node);
flatten(node.getChildren(), flatList);
}
}
}
}
protected abstract void processLayerStyles(FacesContext context, UIComponent layer, ResponseWriter writer) throws IOException;
}