Geometry: Make meshing method to undo command.

src/View/Geometry/Table.py

@@ -221,3 +221,15 @@ class GeometryReachTableModel(PamhyrTableModel):
 
         self.layoutAboutToBeChanged.emit()
         self.layoutChanged.emit()
+
+    def meshing(self, mesher, step):
+        self.layoutAboutToBeChanged.emit()
+
+        self._undo.push(
+            MeshingCommand(
+                self._data, mesher, step
+            )
+        )
+
+        self.layoutAboutToBeChanged.emit()
+        self.layoutChanged.emit()

src/View/Geometry/UndoCommand.py

@@ -25,6 +25,8 @@ from PyQt5.QtWidgets import (
 
 from Model.Geometry import Reach
 
+from Meshing.Mage import MeshingWithMage
+
 
 class SetDataCommand(QUndoCommand):
     def __init__(self, reach, index, old_value, new_value):
@@ -187,3 +189,35 @@ class DuplicateCommand(QUndoCommand):
     def redo(self):
         for profile in self._profiles:
             self._reach.insert_profile(self._rows[0], profile)
+
+
+class MeshingCommand(QUndoCommand):
+    def __init__(self, reach, mesher, step):
+        QUndoCommand.__init__(self)
+
+        self._reach = reach
+        self._step = step
+        self._mesher = mesher
+
+        self._profiles = reach.profiles.copy()
+        self._profiles.reverse()
+
+        self._new_profiles = None
+
+    def undo(self):
+        self._reach.purge()
+
+        for profile in self._profiles:
+            self._reach.insert_profile(0, profile)
+
+    def redo(self):
+        if self._new_profiles is None:
+            self._mesher.meshing(self._reach)
+
+            self._new_profiles = self._reach.profiles.copy()
+            self._new_profiles.reverse()
+        else:
+            self._reach.purge()
+
+            for profile in self._new_profiles:
+                self._reach.insert_profile(0, profile)

src/View/Geometry/Window.py

@@ -247,12 +247,8 @@ class GeometryWindow(PamhyrWindow):
         self.tableView.model().blockSignals(False)
 
     def edit_meshing(self):
-        self.tableView.model().blockSignals(True)
-
         mesher = MeshingWithMage()
-        mesher.meshing(self._reach)
+        self._tablemodel.meshing(mesher, -1)
-
-        self.tableView.model().blockSignals(False)
 
         self.update_profile_windows()
         self.plot_xy()