CMD_VariableChangeNotifier.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        CMD_VariableChangeNotifier.h (CMD  Library, C++)
 *
 * COMMENTS:
 *              This class implements a notification center for global 
 *              variables in Houdini. When a variable value changes, the
 *              CMD_VariableChangeNotifier is informed of that fact, 
 *              and then it takes over the process of further notification
 *              distribution.
 */

#ifndef __CMD_VariableChangeNotifier__
#define __CMD_VariableChangeNotifier__

#include "CMD_API.h"

class CMD_API CMD_VariableChangeNotifier
{
public:
                         CMD_VariableChangeNotifier();
    virtual             ~CMD_VariableChangeNotifier();

    /// Informs the variable change notifier object that a given variable
    /// value has changed. The notifier will trigger an appropriate event.
    virtual void        variableValueChanged( const char * var_name ) = 0;
};

#endif