making presentation library work

src/presentationsqlmodel.h

@@ -0,0 +1,49 @@
+#ifndef PRESENTATIONSQLMODEL_H
+#define PRESENTATIONSQLMODEL_H
+
+#include <QSqlTableModel>
+#include <qobject.h>
+#include <qobjectdefs.h>
+#include <qqml.h>
+#include <qurl.h>
+#include <qvariant.h>
+
+class PresentationSqlModel : public QSqlTableModel
+{
+  Q_OBJECT
+  Q_PROPERTY(int id READ id)
+  Q_PROPERTY(QString title READ title WRITE setTitle NOTIFY titleChanged)
+  Q_PROPERTY(QUrl filePath READ filePath WRITE setFilePath NOTIFY filePathChanged)
+  QML_ELEMENT
+
+public:
+  PresentationSqlModel(QObject *parent = 0);
+
+  int id() const;
+  QString title() const;
+  QUrl filePath() const;
+
+  void setTitle(const QString &title);
+  void setFilePath(const QUrl &filePath);
+
+  Q_INVOKABLE void updateTitle(const int &row, const QString &title);
+  Q_INVOKABLE void updateFilePath(const int &row, const QUrl &filePath);
+
+  Q_INVOKABLE void newPresentation(const QUrl &filePath);
+  Q_INVOKABLE void deletePresentation(const int &row);
+  Q_INVOKABLE QVariantMap getPresentation(const int &row);
+
+  QVariant data(const QModelIndex &index, int role) const override;
+  QHash<int, QByteArray> roleNames() const override;
+
+signals:
+    void titleChanged();
+    void filePathChanged();
+
+private:
+    int m_id;
+    QString m_title;
+    QUrl m_filePath;
+};
+
+#endif //PRESENTATIONSQLMODEL_H