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#ifndef UTIL_PROGRESS_PROGRESS_LISTENER_H_
#define UTIL_PROGRESS_PROGRESS_LISTENER_H_
#include <exception>
#include <string>
class ProgressListener {
public:
ProgressListener() = default;
virtual ~ProgressListener() = default;
virtual void OnStartTask(const std::string& description) = 0;
virtual void OnProgress(size_t progress, size_t max_progress) = 0;
/**
* This function will be called exactly once, unless
* an exception occurred. In that case, @ref OnException() will
* be called only.
*/
virtual void OnFinish() = 0;
virtual void OnException(std::exception& thrown_exception) = 0;
};
#endif // UTIL_PROGRESS_PROGRESS_LISTENER_H_
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