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# mainwindow.h Example File
network/torrent/mainwindow.h

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     #ifndef MAINWINDOW_H
     #define MAINWINDOW_H

     #include <QList>
     #include <QStringList>
     #include <QMainWindow>

     #include "torrentclient.h"

     class E_CLASS(QAction;
     class E_CLASS(QCloseEvent;
     class E_CLASS(QLabel;
     class E_CLASS(QProgressDialog;
     class E_CLASS(QSlider;
     class TorrentView;

     class MainWindow : public QMainWindow
     {
         Q_OBJECT

     public:
         MainWindow(QWidget *parent = 0);

         QSize sizeHint() const;
         const TorrentClient *clientForRow(int row) const;

     protected:
         void closeEvent(QCloseEvent *event);

     private slots:
         void loadSettings();
         void saveSettings();

         bool addTorrent();
         void removeTorrent();
         void pauseTorrent();
         void moveTorrentUp();
         void moveTorrentDown();

         void torrentStopped();
         void torrentError(TorrentClient::Error error);

         void updateState(TorrentClient::State state);
         void updatePeerInfo();
         void updateProgress(int percent);
         void updateDownloadRate(int bytesPerSecond);
         void updateUploadRate(int bytesPerSecond);

         void setUploadLimit(int bytes);
         void setDownloadLimit(int bytes);

         void about();
         void setActionsEnabled();
         void acceptFileDrop(const QString &fileName);

     private:
         int rowOfClient(TorrentClient *client) const;
         bool addTorrent(const QString &fileName, const QString &destinationFolder,
                         const QByteArray &resumeState = QByteArray());

         TorrentView *torrentView;
         QAction *pauseTorrentAction;
         QAction *removeTorrentAction;
         QAction *upActionTool;
         QAction *downActionTool;
         QSlider *uploadLimitSlider;
         QSlider *downloadLimitSlider;
         QLabel *uploadLimitLabel;
         QLabel *downloadLimitLabel;

         int uploadLimit;
         int downloadLimit;

         struct Job {
             TorrentClient *client;
             QString torrentFileName;
             QString destinationDirectory;
         };
         QList<Job> jobs;
         int jobsStopped;
         int jobsToStop;

         QString lastDirectory;
         QProgressDialog *quitDialog;

         bool saveChanges;
     };

     #endif