org.icefaces.ace.component.buttongroup.ButtonGroupRenderer Maven / Gradle / Ivy

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The advanced component library for ICEfaces.
There is a newer version: 4.3.0
/*
 * 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)
 */
package org.icefaces.ace.component.buttongroup;

import org.icefaces.ace.api.ButtonGroupMember;
import org.icefaces.ace.renderkit.CoreRenderer;
import org.icefaces.render.MandatoryResourceComponent;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

@MandatoryResourceComponent(tagName = "buttonGroup", value = "org.icefaces.ace.component.buttongroup.ButtonGroup")
public class ButtonGroupRenderer extends CoreRenderer {
    @Override
    public void encodeBegin(FacesContext context, UIComponent component) throws IOException {
        super.encodeBegin(context, component);
        ResponseWriter writer = context.getResponseWriter();
        ButtonGroup buttonGroup = (ButtonGroup) component;
        String style = (style = buttonGroup.getStyle()) == null ? "" : style.trim();
        String styleClass = (styleClass = buttonGroup.getStyleClass()) == null ? "" : styleClass.trim();
        styleClass += (styleClass.length() > 0 ? " " : "") + "ui-widget ui-widget-content ui-corner-all";
        String clientId = component.getClientId(context);
        writer.startElement("div", component);
        writer.writeAttribute("id", clientId, "id");
        if (style.length() > 0) {
            writer.writeAttribute("style", style, "style");
        }
        writer.writeAttribute("class", styleClass, "styleClass");

        UIComponent headerFacet = component.getFacet("header");
        String headerText = (headerText = buttonGroup.getHeader()) == null ? "" : headerText.trim();

        if (headerFacet != null || headerText.length() > 0) {
            writer.startElement("div", null);
            writer.writeAttribute("class", "ui-widget-header ui-corner-top", null);
            if (headerFacet != null) {
                renderChild(context, headerFacet);
            } else if (headerText.length() > 0) {
                writer.write(headerText);
            }
            writer.endElement("div");
        }
        /* only add the buttonGroup to the list of controlling groups if mutuallyExclusive is true */
        if (buttonGroup.isMutuallyExclusive()) {
            List groupList = getGroupFromContext(buttonGroup, context);
            if (!groupList.contains(clientId)) {
                groupList.add(clientId);
                context.getAttributes().put(buttonGroup.GROUP_LIST_KEY, groupList);
            }
        }

    }
    private List getGroupFromContext(ButtonGroup group, FacesContext fc){
         List groupList = new ArrayList();
         Object olist = fc.getAttributes().get(group.GROUP_LIST_KEY) ;
         if (olist != null){
              if (olist instanceof List){
                 groupList = (List)fc.getAttributes().get(group.GROUP_LIST_KEY);
              }
         }  else {
            // System.out.println(" empty List of button groups......");
         }
         return groupList;
     }

    @Override
    public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
        if (context == null || component == null) {
            throw new NullPointerException();
        }
        String groupId = component.getClientId(context);
        ButtonGroup groupComp = (ButtonGroup)component;
        boolean mutuallyExclusive = groupComp.isMutuallyExclusive();
        if (mutuallyExclusive){
            context.getAttributes().put(ButtonGroup.GROUP_PARENT_ID, groupId);
        }
        if (component.getChildCount() > 0) {
            Iterator kids = component.getChildren().iterator();
            while (kids.hasNext()) {
                UIComponent kid = kids.next();
                if (kid instanceof ButtonGroupMember){
                    ButtonGroupMember bgc = (ButtonGroupMember)kid;
                    if (bgc.getGroup()==null || bgc.getGroup().length()<1 && mutuallyExclusive ) {
                        bgc.setGroup(component.getClientId(context));
                    }
                }
                kid.encodeAll(context);
            }
        }
        if (mutuallyExclusive){
            context.getAttributes().remove(ButtonGroup.GROUP_PARENT_ID);
        }
    }

    @Override
    public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
        super.encodeEnd(context, component);
        ResponseWriter writer = context.getResponseWriter();
        ButtonGroup buttonGroup = (ButtonGroup) component;
        writer.endElement("div");
    }

    @Override
    public boolean getRendersChildren() {
        return true;
    }
}