BackgroundWorker interface sample

gistfile1.cpp

template<typename TProgress>
class BackgroundWorker
{
private:
	TProgress progress_;
	bool reportChanged_;
public:
	BackgroundWorker(bool reportChanged = false) :
		progress_(TProgress()),
		reportChanged_(reportChanged)
	{
	}

	BackgroundWorker(const TProgress &progress, bool reportChanged = false) :
		progress_(progress),
		reportChanged_(reportChanged)
	{
	}

	void Run()
	{
		for (int i = 0; i < 10; i++)
		{
			int report = progress_.Execute();
			if (reportChanged_)
			{
				this->Report(report);
			}
		}
	}

private:
	void Report(int report)
	{
		progress_.Report(report);
	}
};

struct Progress
{
	int count;
	int Execute()
	{
		std::cout << "exec!!" << std::endl;
		return count++; 
	}

	void Report(int report)
	{
		std::cout << report << std::endl;
	}
};