annotate hgrunner.h @ 109:1721c580c10e

* Add a queueing mechanism for Hg actions, instead of refusing to start an action if something else is already happening.  This is essential now that actions can be prompted by asynchronous events (e.g. filesystem watcher).
 * Make Revert behave sensibly

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    EasyMercurial

    Based on HgExplorer by Jari Korhonen
    Copyright (c) 2010 Jari Korhonen
    Copyright (c) 2010 Chris Cannam
    Copyright (c) 2010 Queen Mary, University of London
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef HGRUNNER_H
#define HGRUNNER_H

#include "hgaction.h"

#include <QProgressBar>
#include <QProcess>
#include <QByteArray>
#include <QRect>
#include <QFile>

#include <deque>

class HgRunner : public QProgressBar
{
    Q_OBJECT

public:
    HgRunner(QWidget * parent = 0);
    ~HgRunner();

    void requestAction(HgAction action);
/*
    bool isCommandRunning();
    void killCurrentCommand();

    void hideProgBar();
*/    
signals:
    void commandCompleted(HgAction action, QString stdout);
    void commandFailed(HgAction action, QString stderr);

private slots:
    void started();
    void finished(int procExitCode, QProcess::ExitStatus procExitStatus);
    void dataReady();

private:
    void checkQueue();
    void startCommand(HgAction action);
    QString getHgBinaryName();
    void closeProcInput();
    void killCurrentCommand();

    void noteUsername(QString);
    void noteRealm(QString);
    void getUsername();
    void getPassword();
    void checkPrompts(QString);

    int m_ptyMasterFd;
    int m_ptySlaveFd;
    QString m_ptySlaveFilename;
    QFile *m_procInput;
    
    bool m_isRunning;
    QProcess *m_proc;
    QString m_output;

    QString m_userName;
    QString m_realm;

    typedef std::deque<HgAction> ActionQueue;
    ActionQueue m_queue;
    HgAction m_currentAction;
};

#endif // HGRUNNER_H