Scenarios: Fix scenarios table list after delete action.

src/Model/Scenarios.py

@@ -60,6 +60,9 @@ class Scenarios(PamhyrModelDict):
         self.set(new._id, new)
         return new
 
+    def __len__(self):
+        return len(self.lst)
+
     @property
     def lst(self):
         return list(
@@ -70,8 +73,8 @@ class Scenarios(PamhyrModelDict):
         )
 
     def delete(self, key):
-        el = self._dict.get(key)
-        if el is None:
+        if key not in self._dict:
             return
 
-        el.set_as_deleted()
+        self._dict[key].set_as_deleted()
+        self._status.modified()

src/View/Scenarios/Table.py

@@ -27,7 +27,7 @@ from View.Tools.PamhyrTable import PamhyrTableModel
 
 from PyQt5.QtCore import (
     Qt, QRect, QVariant, QAbstractTableModel, pyqtSlot, pyqtSignal,
-    QEvent,
+    QEvent, QModelIndex,
 )
 
 from PyQt5.QtWidgets import (
@@ -41,20 +41,32 @@ logger = logging.getLogger()
 
 class ScenariosTableModel(PamhyrTableModel):
     def _setup_lst(self):
-        self._lst = self._data.scenarios.lst
+        self._lst = list(
+            filter(
+                lambda x: not x.is_deleted(),
+                self._data.scenarios.lst
+            )
+        )
+
+    def rowCount(self, parent=QModelIndex()):
+        self._setup_lst()
+
+        return len(self._lst)
 
     def data(self, index, role):
         if role != Qt.ItemDataRole.DisplayRole:
             return QVariant()
 
+        value = self._lst[index.row()]
+
         if self._headers[index.column()] == "parent":
-            parent = self._lst[index.row()][self._headers[index.column()]]
+            parent = value["parent"]
             if parent is None:
                 return ""
 
             return parent.name
 
-        return self._lst[index.row()][self._headers[index.column()]]
+        return value[self._headers[index.column()]]
 
     @pyqtSlot()
     def setData(self, index, value, role=Qt.EditRole):