Index: sources/model/MAbstract.h
===================================================================
diff -u -r6ae83fa9a1a3204864fc5b50fe906ac09e9c1ea5 -r90bcc276f2a879169fef20e9168711cf906c0e54
--- sources/model/MAbstract.h	(.../MAbstract.h)	(revision 6ae83fa9a1a3204864fc5b50fe906ac09e9c1ea5)
+++ sources/model/MAbstract.h	(.../MAbstract.h)	(revision 90bcc276f2a879169fef20e9168711cf906c0e54)
@@ -1,3 +1,17 @@
+/*!
+ *
+ * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
+ * \copyright
+ *          THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM,
+ *          IN PART OR IN WHOLE,
+ *          WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
+ *
+ * \file    MAbstract.h
+ * \date    7/2/2020
+ * \author  Behrouz NematiPour
+ *
+ */
+
 #pragma once
 
 // Qt
@@ -10,11 +24,45 @@
 
 class MAbstract {
 
+private:
+    QString _delimiter = ",";
+
+protected:
+    enum class Type_Enum {
+        eDatum,
+        eEvent,
+        };
+    enum class Unit_Enum {
+        eUI,
+        eHD,
+        eDG,
+    };
+
+private:
+    const QMap<Type_Enum,QString> _typeText {
+        {Type_Enum::eDatum, "D"},
+        {Type_Enum::eEvent, "E"}
+    };
+
+    const QMap<Unit_Enum,QString> _unitText {
+        {Unit_Enum::eUI, "UI"},
+        {Unit_Enum::eHD, "HD"},
+        {Unit_Enum::eDG, "DG"}
+    };
+
 public:
-    virtual QString toString        (                                                       ) const = 0;
-    virtual void    toVariantList   (      QVariantList &vData                              ) const = 0;
-    virtual bool    fromByteArray   (const QByteArray   &vByteArray  , int *vIndex = nullptr)       = 0;
 
+    // the model needs to implement these since each model have different meaning of the bytes from differnet souce(unit).
+    virtual bool         fromByteArray(const QByteArray   &vByteArray  , int *vIndex = nullptr)       = 0;
+    virtual Type_Enum    typeText     (                                                       ) const = 0;
+    virtual Unit_Enum    unitText     (                                                       ) const = 0;
+    virtual QString      infoText     (                                                       ) const = 0;
+    virtual QVariantList parameters   (                                                       ) const = 0;
+
+    // Non-virtuals which working with parameters virtual method.
+    void    toVariantList(QVariantList &vData) const;
+    QString toString     (                   ) const;
+    QString description  (                   ) const;
 };
 
 }