move some files around and create a context manager for fit recalclation

gui/fitCommands/guiAddCharge.py

@@ -0,0 +1,29 @@
+import wx
+from service.fit import Fit
+
+import gui.mainFrame
+from gui import globalEvents as GE
+from .calc.fitSetCharge import FitSetChargeCommand
+
+class GuiModuleAddChargeCommand(wx.Command):
+    def __init__(self, fitID, itemID, modules):
+        wx.Command.__init__(self, True, "Module Charge Add")
+        self.mainFrame = gui.mainFrame.MainFrame.getInstance()
+        self.sFit = Fit.getInstance()
+        self.internal_history = wx.CommandProcessor()
+        self.fitID = fitID
+        # can set his up no to not have to set variables on our object
+        self.cmd = FitSetChargeCommand(fitID, modules, itemID)
+
+    def Do(self):
+        if self.internal_history.Submit(self.cmd):
+            wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.fitID))
+            return True
+        return False
+
+    def Undo(self):
+        for x in self.internal_history.Commands:
+            self.internal_history.Undo()
+            wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.fitID))
+        return True
+