appmodel.h Example File

weatherinfo/appmodel.h
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 #ifndef APPMODEL_H
 #define APPMODEL_H

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

 #include <QtPositioning/QGeoPositionInfoSource>

 class WeatherData : public QObject {
     Q_OBJECT
     Q_PROPERTY(QString dayOfWeek
                READ dayOfWeek WRITE setDayOfWeek
                NOTIFY dataChanged)
     Q_PROPERTY(QString weatherIcon
                READ weatherIcon WRITE setWeatherIcon
                NOTIFY dataChanged)
     Q_PROPERTY(QString weatherDescription
                READ weatherDescription WRITE setWeatherDescription
                NOTIFY dataChanged)
     Q_PROPERTY(QString temperature
                READ temperature WRITE setTemperature
                NOTIFY dataChanged)

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

     QString dayOfWeek() const;
     QString weatherIcon() const;
     QString weatherDescription() const;
     QString temperature() const;

     void setDayOfWeek(const QString &value);
     void setWeatherIcon(const QString &value);
     void setWeatherDescription(const QString &value);
     void setTemperature(const QString &value);

 signals:
     void dataChanged();
 private:
     QString m_dayOfWeek;
     QString m_weather;
     QString m_weatherDescription;
     QString m_temperature;
 };

 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);
     void hadError(bool tryAgain);

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

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

 public slots:
     Q_INVOKABLE void refreshWeather();

 private slots:
     void queryCity();
     void networkSessionOpened();
     void positionUpdated(QGeoPositionInfo gpsPos);
     void positionError(QGeoPositionInfoSource::Error e);
     void handleGeoNetworkData(QNetworkReply *networkReply);
     void handleWeatherNetworkData(QNetworkReply *networkReply);
     void handleForecastNetworkData(QNetworkReply *networkReply);

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


 private:
     AppModelPrivate *d;

 };

 #endif // APPMODEL_H