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JSF components and utilities that can be used with any JSF implementation. This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this version of the Tomahawk library.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
package org.apache.myfaces.custom.tree2;

import java.util.Map;

import javax.faces.component.UIComponent;
import javax.faces.component.UIGraphic;
import javax.faces.component.UIViewRoot;
import javax.faces.view.facelets.ComponentConfig;
import javax.faces.view.facelets.ComponentHandler;
import javax.faces.view.facelets.FaceletContext;

/**
 * 
 * @since 1.1.10
 * @author Leonardo Uribe
 */
public class HtmlTreeTagHandler extends ComponentHandler
{
    private static final String IMAGE_PREFIX = "t2";
    private static final String NODE_STATE_EXPANDED = "x";
    private static final String NODE_STATE_CLOSED = "c";
    
    public HtmlTreeTagHandler(ComponentConfig config)
    {
        super(config);
    }

    @Override
    public void onComponentPopulated(FaceletContext ctx, UIComponent c,
            UIComponent parent)
    {
        if (ComponentHandler.isNew(c))
        {
            // t:tree2 requires to force id rendering of UIGraphic images on "expand" and "collapse" facets for
            // a nodeTypeFacet. Long time ago, this was done on HtmlTreeRenderer.encodeNavigation, but that
            // hack will not work well with jsf 2 PSS, because it requires ids to be generated in a "stable" way,
            // and that hack used a counter to generate it.
            for (Map.Entry entry : c.getFacets().entrySet())
            {
                UIComponent nodeTypeFacet = entry.getValue();
                UIComponent expandFacet = nodeTypeFacet.getFacet("expand");
                if (expandFacet != null)
                {
                    //if (! (expandFacet instanceof UIGraphic))
                    //{
                    //    expandFacet = expandFacet.getChildren().get(0);
                    //    nodeTypeFacet.getFacets().put("expand", expandFacet);
                    //}
                    UIGraphic expandImg = (UIGraphic)expandFacet;
                    String id = expandImg.getId();
                    if (id.startsWith(UIViewRoot.UNIQUE_ID_PREFIX))
                    {
                        expandImg.setId(IMAGE_PREFIX + id.substring(UIViewRoot.UNIQUE_ID_PREFIX.length()) + NODE_STATE_EXPANDED);
                    }
                    
                }
                
                UIComponent collapseFacet = nodeTypeFacet.getFacet("collapse");
                if (collapseFacet != null)
                {
                    //if (! (collapseFacet instanceof UIGraphic))
                    //{
                    //    collapseFacet = collapseFacet.getChildren().get(0);
                    //    nodeTypeFacet.getFacets().put("collapse", collapseFacet);
                    //}
                    UIGraphic collapseImg = (UIGraphic)collapseFacet;
                    String id = collapseImg.getId();
                    if (id.startsWith(UIViewRoot.UNIQUE_ID_PREFIX))
                    {
                        collapseImg.setId(IMAGE_PREFIX + id.substring(UIViewRoot.UNIQUE_ID_PREFIX.length()) + NODE_STATE_CLOSED);
                    }
                }
            }
        }
    }
}