/*

     This file is part of Combean.

     Combean is free software; you can redistribute it and/or modify

     it under the terms of the GNU General Public License as published by

     the Free Software Foundation; either version 2 of the License, or

     (at your option) any later version.

     Combean is distributed in the hope that it will be useful,

     but WITHOUT ANY WARRANTY; without even the implied warranty of

     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

     GNU General Public License for more details.

     You should have received a copy of the GNU General Public License

     along with Combean; if not, write to the Free Software

     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

 /*

  * Created on 25.03.2005

  *

  */

 package net.sourceforge.combean.graph.decorators;

 import net.sourceforge.combean.interfaces.graph.Graph;

 import net.sourceforge.combean.interfaces.graph.prop.AddEdgeGraphProp;

 import net.sourceforge.combean.interfaces.graph.prop.AddNodeGraphProp;

 import net.sourceforge.combean.interfaces.graph.prop.NestedGraphProp;

 /**

  * Convenience base class for decorators of graphs, i.e., classes which

  * implement a graph property and enhance the functionality of an inner

  * graph property object by intercepting calls to it.

  * 

  * @author schickin

  *

  */

 public abstract class AbstractDecoratedGraph implements NestedGraphProp {

     private Graph g = null;

     /**

      * Constructor

      * 

      * @param g the graph to be decorated

      */

     public AbstractDecoratedGraph(Graph g) {

         super();

         this.g = g;

     }

     /* (non-Javadoc)

      * @see net.sourceforge.combean.interfaces.graph.Graph#getNodeClass()

      */

     public Class getNodeClass() {

          return this.g.getNodeClass();

     }

     /* (non-Javadoc)

      * @see net.sourceforge.combean.interfaces.graph.Graph#getEdgeClass()

      */

     public Class getEdgeClass() {

          return this.g.getEdgeClass();

     }

     /* (non-Javadoc)

      * @see net.sourceforge.combean.interfaces.graph.NestedGraphProp#getNestedGraph()

      */

     public Graph getNestedGraph() {

          return this.g;

     }

     /**

      * Check whether the given property refers to the fact that the graph

      * shall be modifiable

      * 

      * @param wantedProp

      * @return true if either the set of edges or of the nodes in the graph

      * is modifiable. 

      */

     protected boolean isModifiableGraphProp(Class wantedProp) {

         return AddNodeGraphProp.class.isAssignableFrom(wantedProp) ||

          AddEdgeGraphProp.class.isAssignableFrom(wantedProp);

     }

 }