appmodel.h Example File

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 #ifndef APPMODEL_H
 #define APPMODEL_H

 #include <QtCore/QObject>
 #include <QtCore/QString>
 #include <QtNetwork/QNetworkReply>
 #include <QtQml/QQmlListProperty>

 #include <qgeopositioninfo.h>

 class WeatherData : public QObject {
     Q_OBJECT
     Q_PROPERTY(QString dayOfWeek
                READ dayOfWeek WRITE setDayOfWeek
                NOTIFY dataChanged)
     Q_PROPERTY(QString weather
                READ weather WRITE setWeather
                NOTIFY dataChanged)
     Q_PROPERTY(QString weatherDesc
                READ weatherDesc WRITE setWeatherDesc
                NOTIFY dataChanged)
     Q_PROPERTY(QString tempString
                READ tempString WRITE setTempString
                NOTIFY dataChanged)

 public:
     explicit WeatherData(QObject *parent = 0);
     WeatherData(const WeatherData &other);

     const WeatherData &operator=(const WeatherData &other);

     QString dayOfWeek() const;
     QString weather() const;
     QString weatherDesc() const;
     QString tempString() const;

     void setDayOfWeek(QString value);
     void setWeather(QString value);
     void setWeatherDesc(QString value);
     void setTempString(QString value);

 signals:
     void dataChanged();
 private:
     QString m_dayOfWeek;
     QString m_weather;
     QString m_weatherDesc;
     QString m_tempString;
 };

 Q_DECLARE_METATYPE(WeatherData)

 class AppModelPrivate;
 class AppModel : public QObject
 {
     Q_OBJECT
     Q_PROPERTY(bool ready
                READ ready
                NOTIFY readyChanged)
     Q_PROPERTY(bool hasSource
                READ hasSource
                NOTIFY readyChanged)
     Q_PROPERTY(bool hasValidCity
                READ hasValidCity
                NOTIFY cityChanged)
     Q_PROPERTY(bool hasValidWeather
                READ hasValidWeather
                NOTIFY weatherChanged)
     Q_PROPERTY(bool useGps
                READ useGps WRITE setUseGps
                NOTIFY useGpsChanged)
     Q_PROPERTY(QString city
                READ city WRITE setCity
                NOTIFY cityChanged)
     Q_PROPERTY(WeatherData *weather
                READ weather
                NOTIFY weatherChanged)
     Q_PROPERTY(QQmlListProperty<WeatherData> forecast
                READ forecast
                NOTIFY weatherChanged)

 public:
     explicit AppModel(QObject *parent = 0);
     ~AppModel();

     bool ready() const;
     bool hasSource() const;
     bool useGps() const;
     bool hasValidCity() const;
     bool hasValidWeather() const;
     void setUseGps(bool value);

     QString city() const;
     void setCity(const QString &value);

     WeatherData *weather() const;
     QQmlListProperty<WeatherData> forecast() const;

 public slots:
     Q_INVOKABLE void refreshWeather();

 private slots:
     void networkSessionOpened();
     void positionUpdated(QGeoPositionInfo gpsPos);
     // these would have QNetworkReply* params but for the signalmapper
     void handleGeoNetworkData(QObject *networkReply);
     void handleWeatherNetworkData(QObject *networkReply);

 signals:
     void readyChanged();
     void useGpsChanged();
     void cityChanged();
     void weatherChanged();


 private:
     AppModelPrivate *d;

 };

 #endif // APPMODEL_H