analysishost.h

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#ifndef ANALYSISHOST_H
#define ANALYSISHOST_H
 
#include <string>
 
class ProgressReporter;
 
class AnalysisHost
{
public:
    virtual ~AnalysisHost() = default;
 
    virtual void ShowWarning(const std::string& message) = 0;
 
    virtual ProgressReporter* CreateProgressReporter(int number_of_panels = 1,
                                                     bool extra_label_and_progressbar = false) = 0;
 
    virtual void DisposeProgressReporter(ProgressReporter* reporter) = 0;
};
 
class ScopedProgressReporter
{
public:
    ScopedProgressReporter(AnalysisHost* host,
                           int number_of_panels = 1,
                           bool extra_label_and_progressbar = false)
        : host_(host),
          reporter_(host ? host->CreateProgressReporter(number_of_panels,
                                                        extra_label_and_progressbar)
                         : nullptr)
    {
    }
 
    ~ScopedProgressReporter()
    {
        if (host_)
            host_->DisposeProgressReporter(reporter_);
    }
 
    ScopedProgressReporter(const ScopedProgressReporter&) = delete;
    ScopedProgressReporter& operator=(const ScopedProgressReporter&) = delete;
 
    ProgressReporter* Get() const { return reporter_; }
    ProgressReporter* operator->() const { return reporter_; }
    operator ProgressReporter*() const { return reporter_; }
 
private:
    AnalysisHost* host_;
    ProgressReporter* reporter_;
};
 
#endif // ANALYSISHOST_H