com.sun.faces.facelets.tag.jsf.core.FacetHandler Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.faces.facelets.tag.jsf.core;
import com.sun.faces.facelets.tag.TagHandlerImpl;
import javax.faces.component.UIComponent;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.TagAttribute;
import javax.faces.view.facelets.TagConfig;
import javax.faces.view.facelets.TagException;
import java.io.IOException;
/**
* Register a named facet on the UIComponent associated with the closest parent
* UIComponent custom action. See tag
* documentation.
*
* @author Jacob Hookom
* @version $Id$
*/
public final class FacetHandler extends TagHandlerImpl
implements javax.faces.view.facelets.FacetHandler {
public static final String KEY = "facelets.FACET_NAME";
protected final TagAttribute name;
public FacetHandler(TagConfig config) {
super(config);
this.name = this.getRequiredAttribute("name");
}
/*
* (non-Javadoc)
*
* @see com.sun.facelets.FaceletHandler#apply(com.sun.facelets.FaceletContext,
* javax.faces.component.UIComponent)
*/
@Override
public void apply(FaceletContext ctx, UIComponent parent)
throws IOException {
if (parent == null) {
throw new TagException(this.tag, "Parent UIComponent was null");
}
parent.getAttributes().put(KEY, getFacetName(ctx));
try {
this.nextHandler.apply(ctx, parent);
} finally {
parent.getAttributes().remove(KEY);
}
}
// javax.faces.view.facelets.tag.FacetHandler.getFacetName()
// implementation
@Override
public String getFacetName(FaceletContext ctxt) {
return this.name.getValue(ctxt);
}
}