001// Licensed to the Apache License, Version 2.0 (the "License");
002// you may not use this file except in compliance with the License.
003// You may obtain a copy of the License at
004//
005//     http://www.apache.org/licenses/LICENSE-2.0
006//
007// Unless required by applicable law or agreed to in writing, software
008// distributed under the License is distributed on an "AS IS" BASIS,
009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
010// See the License for the specific language governing permissions and
011// limitations under the License.
012
013package org.apache.tapestry5.internal;
014
015import org.apache.tapestry5.commons.RecursiveValue;
016import org.apache.tapestry5.corelib.components.Recursive;
017import org.apache.tapestry5.corelib.components.RecursiveBody;
018import org.apache.tapestry5.dom.Element;
019
020/**
021 * <p>
022 * Class that makes the link between {@link Recursive} and {@link RecursiveBody}. 
023 * </p>
024 * <p>
025 * This was contributed by <a href="https://www.pubfactory.com">KGL PubFactory</a>.
026 * </p>
027 * @since 5.9.0
028 */
029final public class RecursiveContext
030{
031
032    private final Provider provider;
033
034    public RecursiveContext(Provider provider) 
035    {
036        this.provider = provider;
037    }
038
039    public String getId() 
040    {
041        return provider.getClientIdForCurrent();
042    }
043
044    public RecursiveValue<?> getCurrent() 
045    {
046        return provider.getCurrent();
047    }
048
049    public Object getValue() 
050    {
051        return provider.getCurrent().getValue();
052    }
053
054    public void registerPlaceholder(Element element) 
055    {
056        provider.registerPlaceholder(element);
057    }
058
059    public static interface Provider 
060    {
061        RecursiveValue<?> getCurrent();
062
063        String getClientIdForCurrent();
064
065        void registerPlaceholder(Element element);
066    }
067    
068}