/**************************************************************
 * 
 * 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
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 * specific language governing permissions and limitations
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 *************************************************************/


#ifndef _CHART2_CHANGINGRESOURCE_HXX
#define _CHART2_CHANGINGRESOURCE_HXX

//.............................................................................
namespace chart
{
//.............................................................................

//-----------------------------------------------------------------------------
/**
*/

class ChangingResource;
class ResourceChangeListener
{
public:
    virtual void stateChanged( ChangingResource* pResource ) = 0;
    virtual ~ResourceChangeListener();
};

class ChangingResource
{
public:
    ChangingResource();
    virtual ~ChangingResource();

    virtual void setChangeListener( ResourceChangeListener* pListener );
    
protected:
    ResourceChangeListener* m_pChangeListener;
};

//.............................................................................
} //namespace chart
//.............................................................................
#endif