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${icefaces.product.name} ACE Component Library
/*
* Original Code Copyright Prime Technology.
* Subsequent Code Modifications Copyright 2011-2014 ICEsoft Technologies Canada Corp. (c)
*
* 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.
*
* NOTE THIS CODE HAS BEEN MODIFIED FROM ORIGINAL FORM
*
* Subsequent Code Modifications have been made and contributed by ICEsoft Technologies Canada Corp. (c).
*
* Code Modification 1: Integrated with ICEfaces Advanced Component Environment.
* Contributors: ICEsoft Technologies Canada Corp. (c)
*
* Code Modification 2: (ICE-6978) Used JSONBuilder to add the functionality of escaping JS output.
* Contributors: ICEsoft Technologies Canada Corp. (c)
* Contributors: ______________________
*/
package org.icefaces.ace.component.contextmenu;
import java.io.IOException;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitHint;
import javax.faces.component.visit.VisitResult;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.el.ValueExpression;
import org.icefaces.ace.component.delegate.Delegate;
import org.icefaces.ace.component.menu.AbstractMenu;
import org.icefaces.ace.component.menu.BaseMenuRenderer;
import org.icefaces.ace.component.submenu.Submenu;
import org.icefaces.ace.component.multicolumnsubmenu.MultiColumnSubmenu;
import org.icefaces.ace.component.menuitem.MenuItem;
import org.icefaces.ace.component.menuseparator.MenuSeparator;
import org.icefaces.ace.util.JSONBuilder;
import org.icefaces.ace.util.Utils;
import org.icefaces.render.MandatoryResourceComponent;
import org.icefaces.util.CoreComponentUtils;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.EnumSet;
@MandatoryResourceComponent(tagName="contextMenu", value="org.icefaces.ace.component.contextmenu.ContextMenu")
public class ContextMenuRenderer extends BaseMenuRenderer {
@Override
public void decode(FacesContext context, UIComponent component) {
ContextMenu menu = (ContextMenu) component;
String clientId = menu.getClientId(context);
Map params = context.getExternalContext().getRequestParameterMap();
String delegateId = menu.getForDelegate();
if (delegateId != null) {
UIComponent delegateComponent = CoreComponentUtils.findComponentInView(context.getViewRoot(), delegateId);
if (delegateComponent != null) {
if (params.containsKey(clientId + "_activeComponent")) {
String activeComponentId = params.get(clientId + "_activeComponent");
if (activeComponentId != null && !"".equals(activeComponentId)) {
ValueExpression fetch = menu.getValueExpression("fetch");
if (fetch != null) {
String expression = fetch.getExpressionString();
Object data = retrieveData(context, delegateComponent, activeComponentId, expression);
menu.setStore(data);
} else {
menu.setStore(null);
}
}
}
}
}
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
AbstractMenu menu = (AbstractMenu) component;
if(menu.shouldBuildFromModel()) {
menu.buildMenuFromModel();
}
encodeMarkup(context, menu);
}
protected void encodeScript(FacesContext context, AbstractMenu abstractMenu) throws IOException {
ResponseWriter writer = context.getResponseWriter();
ContextMenu menu = (ContextMenu) abstractMenu;
String clientId = menu.getClientId(context);
String delegateId = menu.getForDelegate();
String submenuLabels = "";
if (menu.getSubmenuLabels()!=null){
submenuLabels = menu.getSubmenuLabels();
}
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write("ice.ace.jq(function() {");
JSONBuilder json = JSONBuilder.create();
json.beginFunction("ice.ace.create")
.item("ContextMenu")
.beginArray()
.item(clientId)
.beginMap();
if (delegateId == null) {
json.entry("target", findTrigger(context, menu), true);
} else {
UIComponent delegateComponent = CoreComponentUtils.findComponentInView(context.getViewRoot(), delegateId);
if (delegateComponent != null && delegateComponent instanceof Delegate) {
json.entry("forDelegate", delegateComponent.getClientId(context));
json.entry("forComponent", menu.getFor());
} else {
throw new FacesException("Cannot find delegate component \"" + delegateId + "\" in view or it is not an instance of .");
}
Map params = context.getExternalContext().getRequestParameterMap();
if (params.containsKey(clientId + "_activeComponent")) {
json.entry("target", params.get(clientId + "_activeComponent"));
json.entry("showNow", true);
}
}
json.entry("zindex", menu.getZindex())
.entry("direction", menu.getDirection())
.beginMap("animation")
.entry("animated", menu.getEffect())
.entry("duration", menu.getEffectDuration())
.endMap()
.entryNonNullValue("styleClass", menu.getStyleClass())
.entryNonNullValue("style", menu.getStyle())
.entryNonNullValue("hashcode",submenuLabels.hashCode());
json.endMap()
.endArray()
.endFunction();
writer.write(json.toString());
writer.write("});");
writer.endElement("script");
}
protected void encodeMarkup(FacesContext context, AbstractMenu abstractMenu) throws IOException{
ResponseWriter writer = context.getResponseWriter();
ContextMenu menu = (ContextMenu) abstractMenu;
String clientId = menu.getClientId(context);
writer.startElement("span", menu);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("style", "display:none;", null);
writer.writeAttribute("class", "ice-ace-menu-context", null);
if (menu.isForceMenuUpdate()) {
int updateCounter = menu.getForceUpdateCounter();
updateCounter++;
writer.writeAttribute("data-forceUpdateCounter", updateCounter, null);
menu.setForceUpdateCounter(updateCounter);
try {
menu.setForceMenuUpdate(false);
} catch (Exception e) { }
} else {
writer.writeAttribute("data-forceUpdateCounter", menu.getForceUpdateCounter(), null);
}
writer.startElement("ul", null);
encodeMenuContent(context, menu);
writer.endElement("ul");
encodeScript(context, menu);
writer.endElement("span");
}
protected void encodeMenuContent(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
for(Iterator iterator = component.getChildren().iterator(); iterator.hasNext();) {
UIComponent child = (UIComponent) iterator.next();
if(child.isRendered()) {
writer.startElement("li", null);
if(child instanceof MenuItem) {
encodeMenuItem(context, (MenuItem) child);
} else if(child instanceof Submenu) {
encodeSubmenu(context, (Submenu) child, component);
} else if(child instanceof MenuSeparator) {
// we just need
writer.writeAttribute("id", child.getClientId(context), "id");
} else if(child instanceof MultiColumnSubmenu) {
encodeMultiColumnSubmenu(context, (MultiColumnSubmenu) child);
}
writer.endElement("li");
}
}
}
protected void encodeSubmenu(FacesContext context, Submenu submenu, UIComponent component) throws IOException{
ResponseWriter writer = context.getResponseWriter();
String icon = submenu.getIcon();
String label = submenu.getLabel();
boolean disabled = submenu.isDisabled();
String submenuLabels = "";
writer.startElement("a", null);
if (disabled) {
writer.writeAttribute("class", "ui-state-disabled", null);
} else {
writer.writeAttribute("href", "#", null);
writer.writeAttribute("id", submenu.getClientId(context), null);
writer.writeAttribute("name", submenu.getClientId(context), null);
writer.writeAttribute("onclick", submenu.getScript(), null);
}
if(icon != null) {
writer.startElement("span", null);
writer.writeAttribute("class", icon + " wijmo-wijmenu-icon-left", null);
writer.endElement("span");
}
if(label != null) {
writer.startElement("span", null);
String style = submenu.getStyle();
if (style != null && style.trim().length() > 0) {
writer.writeAttribute("style", style, "style");
}
Utils.writeConcatenatedStyleClasses(writer, "wijmo-wijmenu-text", submenu.getStyleClass());
writer.write(submenu.getLabel());
writer.endElement("span");
if (label.length() > 0) submenuLabels += label;
}
/* ICE_11137 for hashcode if labels change values to update script */
if (component instanceof AbstractMenu){
AbstractMenu am = (AbstractMenu) component;
ContextMenu cm = (ContextMenu) am;
String submenuLabelsPrevious = cm.getSubmenuLabels();
if (submenuLabelsPrevious != null && submenuLabelsPrevious.length() > 0){
submenuLabels += submenuLabelsPrevious;
}
cm.setSubmenuLabels(submenuLabels);
}
writer.endElement("a");
//submenus and menuitems
if(submenu.getChildCount() > 0 && !disabled) {
writer.startElement("ul", null);
encodeMenuContent(context, submenu);
writer.endElement("ul");
}
}
protected String findTrigger(FacesContext context, ContextMenu menu) {
String trigger = null;
String _for = menu.getFor();
if(_for != null && !"".equals(_for)) {
UIComponent forComponent = menu.findComponent(_for);
if(forComponent == null)
throw new FacesException("Cannot find component '" + _for + "' in view.");
else {
return "'" + forComponent.getClientId(context) + "'";
}
}
else {
trigger = "document";
}
return trigger;
}
private Object retrieveData(FacesContext context, UIComponent delegate, String activeComponentId, String expression) {
DataRetrievalVisitCallback callback = new DataRetrievalVisitCallback(activeComponentId, expression);
delegate.visitTree(VisitContext.createVisitContext(context, null, EnumSet.of(VisitHint.SKIP_TRANSIENT, VisitHint.SKIP_UNRENDERED)), callback);
return callback.data;
}
private static class DataRetrievalVisitCallback implements VisitCallback {
private String clientId;
private String expression;
private Object data;
private DataRetrievalVisitCallback(String clientId, String expression) {
this.clientId = clientId;
this.expression = expression;
this.data = null;
}
public VisitResult visit(VisitContext context, UIComponent target) {
if (this.clientId.equals(target.getClientId())) {
FacesContext facesContext = FacesContext.getCurrentInstance();
this.data = facesContext.getApplication().evaluateExpressionGet(facesContext, expression, Object.class);
return VisitResult.COMPLETE;
}
return VisitResult.ACCEPT;
}
}
}