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#ifndef SD_ASYNCHRONOUS_TASK_HXX
#define SD_ASYNCHRONOUS_TASK_HXX
    
namespace sd { namespace tools {

/** Interface for the asynchronous execution of a task.  This interface
    allows an controller to run the task either timer based with a fixed
    amount of time between the steps or thread based one step right after
    the other.
*/
class AsynchronousTask
{
public:
    /** Run the next step of the task.  After HasNextStep() returns false
        this method should ignore further calls.
    */
    virtual void RunNextStep (void) = 0;

    /** Return <TRUE/> when there is at least one more step to execute.
        When the task has been executed completely then <FALSE/> is
        returned.
    */
    virtual bool HasNextStep (void) = 0;
};

} } // end of namespace ::sd::tools

#endif