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#ifndef PRELAUNCHPROCESSBACKEND_H
#define PRELAUNCHPROCESSBACKEND_H

#include "unixprocessbackend.h"
#include "processmanager-global.h"

QT_BEGIN_NAMESPACE_PROCESSMANAGER

class QueuedSignal
{
public:
    enum SignalName { StateChanged, Started, Error, Finished };

    SignalName name;
    union {
        QProcess::ProcessError error;
        struct {
            int                   exitCode;
            QProcess::ExitStatus  exitStatus;
        } f;
        QProcess::ProcessState state;
    } n;
};

class Q_ADDON_PROCESSMANAGER_EXPORT PrelaunchProcessBackend : public UnixProcessBackend
{
    Q_OBJECT

public:
    PrelaunchProcessBackend(const ProcessInfo& info, QObject *parent);
    virtual ~PrelaunchProcessBackend();

    void prestart();
    void setInfo(const ProcessInfo& info);
    bool isReady() const;

    virtual void start();
    virtual QProcess::ProcessState state() const;

private slots:
    void handleProcessStarted();
    void handleProcessError(QProcess::ProcessError error);
    void handleProcessFinished(int exitCode, QProcess::ExitStatus exitStatus);
    void handleProcessStateChanged(QProcess::ProcessState state);

private:
    QList<QueuedSignal> m_queue;
    bool                m_started;
};

QT_END_NAMESPACE_PROCESSMANAGER

#endif // PRELAUNCHPROCESSBACKEND_H