Package com.sun.facelets.tag.ui

Source Code of com.sun.facelets.tag.ui.InsertHandler

/**
* Licensed under the Common Development and Distribution License,
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*   http://www.sun.com/cddl/
*  
* 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 com.sun.facelets.tag.ui;

import java.io.IOException;

import javax.el.ELException;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;

import com.sun.facelets.FaceletContext;
import com.sun.facelets.FaceletException;
import com.sun.facelets.FaceletHandler;
import com.sun.facelets.TemplateClient;
import com.sun.facelets.tag.TagAttribute;
import com.sun.facelets.tag.TagAttributeException;
import com.sun.facelets.tag.TagConfig;
import com.sun.facelets.tag.TagHandler;

/**
* @author Jacob Hookom
* @version $Id: InsertHandler.java,v 1.6 2006/04/03 06:25:36 jhook Exp $
*/
public final class InsertHandler extends TagHandler implements TemplateClient {

    private final String name;

    /**
     * @param config
     */
    public InsertHandler(TagConfig config) {
        super(config);
        TagAttribute attr = this.getAttribute("name");
        if (attr != null) {
            if (!attr.isLiteral()) {
                throw new TagAttributeException(this.tag, attr, "Must be Literal");
            }
            this.name = attr.getValue();
        } else {
            this.name = null;
        }
    }

    /*
     * (non-Javadoc)
     *
     * @see com.sun.facelets.FaceletHandler#apply(com.sun.facelets.FaceletContext,
     *      javax.faces.component.UIComponent)
     */
    public void apply(FaceletContext ctx, UIComponent parent)
            throws IOException, FacesException, FaceletException, ELException {
       
        ctx.extendClient(this);
        boolean found = false;
        try {
            found = ctx.includeDefinition(parent, this.name);
        } finally {
            ctx.popClient(this);
        }
        if (!found) {
            this.nextHandler.apply(ctx, parent);
        }
    }

    public boolean apply(FaceletContext ctx, UIComponent parent, String name) throws IOException, FacesException, FaceletException, ELException {
        if (this.name == name || this.name != null && this.name.equals(name)) {
            this.nextHandler.apply(ctx, parent);
            return true;
        }
        return false;
    }
}
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