func：添加导入导出数据（未完成）。

src/data_edit.h

@@ -0,0 +1,35 @@
+#ifndef DATA_EDIT_H
+#define DATA_EDIT_H
+
+#include <QDialog>
+
+namespace Ui {
+class CDataEdit;
+}
+
+class CDataEdit : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit CDataEdit(QWidget* parent = nullptr);
+    ~CDataEdit();
+
+public:
+    void set_data(const QString& data);
+    void import_data();
+
+protected:
+    void showEvent(QShowEvent* event) override;
+    void show_before();
+
+public:
+    bool is_import_{false};
+    bool is_import_sucess_{false};
+
+private:
+    Ui::CDataEdit* ui;
+    QString        data_{};
+};
+
+#endif   // DATA_EDIT_H