start on view the show single record as list of label + value

pglab/widgets/SingleRecordModel.cpp

@@ -0,0 +1,61 @@
+#include "SingleRecordModel.h"
+#include "CustomDataRole.h"
+
+SingleRecordModel::SingleRecordModel(QObject *parent)
+    : QAbstractTableModel(parent)
+{
+}
+
+QVariant SingleRecordModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    return {};
+}
+
+int SingleRecordModel::rowCount(const QModelIndex &parent) const
+{
+    if (parent.isValid())
+        return 0;
+
+    return elems.size();
+}
+
+int SingleRecordModel::columnCount(const QModelIndex &parent) const
+{
+    if (parent.isValid())
+        return 0;
+
+    return ColCount;
+}
+
+QVariant SingleRecordModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid())
+        return QVariant();
+
+    const int row = index.row();
+    if (role == Qt::DisplayRole)
+    {
+        switch (index.column())
+        {
+            case NameCol:
+                return elems[row].name;
+            case ValueCol:
+                return elems[row].value;
+        }
+    }
+    else if (role == CustomDataTypeRole)
+    {
+        switch (index.column())
+        {
+            case NameCol:
+                return Pgsql::text_oid;
+            case ValueCol:
+                return elems[row].oid;
+        }
+    }
+    else if (role == CustomDataMeaningRole)
+    {
+    }
+
+    return QVariant();
+}