widgetdataorder.h

#ifndef WIDGETDATAORDER_H
#define WIDGETDATAORDER_H

#include "QEasyDownloader.hpp"
#include "datadownloaddesc.h"

#include <QWidget>
#include <QHash>
#include <QNetworkAccessManager>

/***********************************************************************************/
// Forward declarations
namespace Ui {
class WidgetDataOrder;
}
class QListWidgetItem;
class MainWindow;
class Preferences;

/***********************************************************************************/
class WidgetDataOrder : public QWidget {
    Q_OBJECT

public:
    WidgetDataOrder(QWidget* parent, MainWindow* mainWindow, Preferences& prefs);
    ~WidgetDataOrder() override;

    void updateRemoteDatasetListWidget();

    void setNAMOnline();
    void setNAMOffline();

signals:
    void refreshRequested();
    void showStatusBarMessage(const char* message);

private slots:

    void on_pushButtonDownload_clicked();
    void on_listWidgetRemoteDatasets_itemDoubleClicked(QListWidgetItem* item);
    void on_listWidgetDownloadQueue_itemDoubleClicked(QListWidgetItem* item);
    void on_pushButtonUpdateRemoteList_clicked();
    void on_pushButtonDeleteSelected_clicked();

    // Data order area changes
    void on_spinboxMinLat_valueChanged(double arg1);
    void on_spinboxMinLon_valueChanged(double arg1);
    void on_spinboxMaxLat_valueChanged(double arg1);
    void on_spinboxMaxLon_valueChanged(double arg1);

private:
    void configureNetwork();
    void deleteQueueItem(QListWidgetItem* item);

    Ui::WidgetDataOrder* m_ui{nullptr};         
    MainWindow* const m_mainWindow{nullptr};    
    Preferences& m_prefs;                       

    // Stores the resulting JSON objects for each dataset
    // returned by a call to:
    // http://navigator.oceansdata.ca/api/datasets/
    QHash<QString, QJsonObject> m_datasetsAPIResultCache;   
    QHash<QString, DataDownloadDesc> m_downloadQueue;       

    // Network stuff
    QNetworkAccessManager m_networkAccessManager{this};
    QEasyDownloader m_downloader{this, &m_networkAccessManager};
};

#endif // WIDGETDATAORDER_H