org.apache.myfaces.view.facelets.tag.faces.ElementNameRule Maven / Gradle / Ivy

/*
 * 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.view.facelets.tag.faces;

import jakarta.faces.view.facelets.MetaRule;
import jakarta.faces.view.facelets.Metadata;
import jakarta.faces.view.facelets.MetadataTarget;
import jakarta.faces.view.facelets.TagAttribute;

/**
 *
 * @author lu4242
 */
final class ElementNameRule extends MetaRule
{
    
    public final static ElementNameRule INSTANCE = new ElementNameRule();
    
    @Override
    public Metadata applyRule(String name, TagAttribute attribute, MetadataTarget meta)
    {
        if ("elementName".equals(name))
        {
            if (!attribute.isLiteral())
            {
                Class type = meta.getPropertyType(name);
                if (type == null)
                {
                    type = Object.class;
                }
                
                return new PassthroughRuleImpl.ValueExpressionMetadata(name, type, attribute);
            }
            else
            {
                return new PassthroughRuleImpl.LiteralAttributeMetadata(name, attribute.getValue());
            }
        }
        return null;
    }
    
}