FallbackChainState.h

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#pragma once
 
#include "QGCState.h"
 
#include <functional>
 
class FallbackChainState : public QGCState
{
    Q_OBJECT
    Q_DISABLE_COPY(FallbackChainState)
 
public:
    using Strategy = std::function<bool()>;
 
    struct StrategyEntry {
        QString name;
        Strategy action;
    };
 
    FallbackChainState(const QString& stateName, QState* parent);
 
    void addStrategy(const QString& name, Strategy action);
 
    QString successfulStrategy() const { return _successfulStrategy; }
 
    int currentStrategyIndex() const { return _currentIndex; }
 
    int strategyCount() const { return _strategies.size(); }
 
signals:
    void tryingStrategy(const QString& name, int index, int total);
 
    void strategyFailed(const QString& name);
 
    void strategySucceeded(const QString& name);
 
protected:
    void onEnter() override;
 
private slots:
    void _tryNextStrategy();
 
private:
    QList<StrategyEntry> _strategies;
    int _currentIndex = -1;
    QString _successfulStrategy;
};