Create DivesiteImportDialog to select sites to import

Creates the dialog box to select which sites to import from the file
selected in mainwindow.cpp. The DivesiteImportModel is created as a
table to display and select which sites are to be imported. Once the
sites are selected, the Command::importDiveSites command is called to
add the sites to the core dive site table with undo/redo functions.

Signed-off-by: Doug Junkins <junkins@foghead.com>

desktop-widgets/divesiteimportdialog.h

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef DIVESITEIMPORTDIALOG_H
+#define DIVESITEIMPORTDIALOG_H
+
+#include <QDialog>
+#include <QThread>
+#include <QHash>
+#include <QMap>
+#include <QAbstractTableModel>
+#include <memory>
+
+#include "ui_divesiteimportdialog.h"
+#include "core/divesite.h"
+
+namespace Ui {
+	class DivesiteImportDialog;
+}
+
+class DivesiteImportedModel;
+
+class DivesiteImportDialog : public QDialog {
+	Q_OBJECT
+public:
+	DivesiteImportDialog(struct dive_site_table &imported, QString source, QWidget *parent = 0 );
+	~DivesiteImportDialog();
+
+public
+slots:
+	void on_ok_clicked();
+	void on_cancel_clicked();
+
+private:
+	Ui::DivesiteImportDialog ui;
+	struct dive_site_table importedSites;
+	QString importedSource;
+
+	DivesiteImportedModel *divesiteImportedModel;
+};
+
+#endif // DIVESITEIMPORTDIALOG_H