WeatherParameters: automatic selection when we open the window + monoselection in default tab

src/View/WeatherParameters/Window.py

@@ -148,6 +148,7 @@ class WeatherParametersWindow(PamhyrWindow):
 
         self.table_default.setModel(self._table)
         self.table_default.setSelectionBehavior(QAbstractItemView.SelectRows)
+        self.table_default.setSelectionMode(QAbstractItemView.SingleSelection)
         self.table_default.horizontalHeader().setSectionResizeMode(
             QHeaderView.Stretch
         )
@@ -211,21 +212,31 @@ class WeatherParametersWindow(PamhyrWindow):
         )
         self.table_spec.scrollTo(index)
 
-        default_selection = self.table_default.selectionModel()
-        default_index = self.table_default.model().index(0, 0)
-        default_selection.select(
-            default_index,
+        self._selected_default_row_index = 0
+        self.select_table_default_row(0)
+
+    def select_table_default_row(self, row):
+        model = self.table_default.model()
+        if model is None or model.rowCount() == 0:
+            return
+
+        row = max(0, min(row, model.rowCount() - 1))
+        index = model.index(row, 0)
+
+        self.table_default.setCurrentIndex(index)
+        self.table_default.selectionModel().select(
+            index,
             QItemSelectionModel.Rows |
             QItemSelectionModel.ClearAndSelect |
             QItemSelectionModel.Select
         )
-        self.table_default.scrollTo(default_index)
+        self.table_default.scrollTo(index)
 
     def on_table_default_selection_changed(self, selected, deselected):
         rows = self.table_default.selectionModel().selectedRows()
         if len(rows) == 0:
-            self._selected_default_row_index = None
-            return None
+            self.select_table_default_row(self._selected_default_row_index)
+            return self._selected_default_row_index
 
         self._selected_default_row_index = rows[0].row()