core/runtime/src/main/java/org/apache/zest/runtime/composite/StateModel.java

/*
 * Copyright (c) 2008-2011, Rickard Öberg. All Rights Reserved.
 *
 * Licensed  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.zest.runtime.composite;

import java.lang.reflect.AccessibleObject;
import org.apache.zest.api.common.QualifiedName;
import org.apache.zest.api.composite.StateDescriptor;
import org.apache.zest.functional.HierarchicalVisitor;
import org.apache.zest.functional.VisitableHierarchy;
import org.apache.zest.runtime.property.PropertiesModel;
import org.apache.zest.runtime.property.PropertyModel;

/**
 * Base model for Composite state
 */
public class StateModel
    implements StateDescriptor, VisitableHierarchy<Object, Object>
{
    protected final PropertiesModel propertiesModel;

    public StateModel( PropertiesModel propertiesModel )
    {
        this.propertiesModel = propertiesModel;
    }

    public PropertyModel propertyModelFor( AccessibleObject accessor )
    {
        return propertiesModel.getProperty( accessor );
    }

    @Override
    public PropertyModel findPropertyModelByName( String name )
        throws IllegalArgumentException
    {
        return propertiesModel.getPropertyByName( name );
    }

    @Override
    public PropertyModel findPropertyModelByQualifiedName( QualifiedName name )
        throws IllegalArgumentException
    {
        return propertiesModel.getPropertyByQualifiedName( name );
    }

    @Override
    public Iterable<PropertyModel> properties()
    {
        return propertiesModel.properties();
    }

    @Override
    public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> visitor )
        throws ThrowableType
    {
        if( visitor.visitEnter( this ) )
        {
            ( (VisitableHierarchy<Object, Object>) propertiesModel ).accept( visitor );
        }
        return visitor.visitLeave( this );
    }
}