1 class AbstractModel(object): 2  3     def __init__(self): 4         self.listeners = [] 5  6     def addListener(self, listenerFunc): 7         self.listeners.append(listenerFunc) 8  9     def removeListener(self, listenerFunc):10         self.listeners.remove(listenerFunc)11 12     def update(self):13         for eachFunc in self.listeners:14             eachFunc(self)

 1 #!usr/bin/env python 2  3 import wx 4 import abstractmodel 5  6  7 class SimpleName(abstractmodel.AbstractModel): 8     def __init__(self,first="",last=""): 9         abstractmodel.AbstractModel.__init__(self)10         self.set(first,last)11         12     def set(self,first,last):13         self.first = first14         self.last = last15         self.update()16         17 class ModelExample(wx.Frame):18     def __init__(self,parent,id):19         wx.Frame.__init__(self,parent,id,‘Flintstones‘,size=(340,200))20         panel = wx.Panel(self)21         panel.SetBackgroundColour("White")22         self.Bind(wx.EVT_CLOSE,self.OnCloseWindow)23         self.textFields = {}24         self.createTextFields(panel)25         self.model = SimpleName()26         self.model.addListener(self.OnUpdate)27         self.createButtonBar(panel)28         29     def buttonData(self):30         return(("Fredify",self.OnFred),31                 ("Wilmafy",self.OnWilma),32                 ("Barnify",self.OnBarney),33                 ("Bettify",self.OnBetty))34                 35     def createButtonBar(self,panel,yPos=0):36         xPos=037         for eachLabel,eachHandler in self.buttonData():38             pos = (xPos,yPos)39             button =self.buildOneButton(panel,eachLabel,eachHandler,pos)40             xPos += button.GetSize().width41             42     def buildOneButton(self,parent,label,handler,pos=(0,0)):43         button = wx.Button(parent,-1,label,pos)44         self.Bind(wx.EVT_BUTTON,handler,button)45         return button46         47     def textFieldData(self):48         return (("First Name",(10,50)),("Last Name",(10,80)))49         50     def createTextFields(self,panel):51         for eachLabel,eachPos in self.textFieldData():52             self.createCaptionedText(panel,eachLabel,eachPos)53             54     def createCaptionedText(self,panel,label,pos):55         static = wx.StaticText(panel,wx.NewId(),label,pos)56         static.SetBackgroundColour("White")57         textPos = (pos[0]+75,pos[1])58         self.textFields[label] = wx.TextCtrl(panel,wx.NewId(),59                 "",size=(100,-1),pos=textPos,60                 style=wx.TE_READONLY)61                 62     def OnUpdate(self,model):63         self.textFields["First Name"].SetValue(model.first)64         self.textFields["Last Name"].SetValue(model.last)65     66     def OnFred(self,event):67         self.model.set("Fred","Flintstones")68         69     def OnBarney(self,event):70         self.model.set("Barney","Rubble")71         72     def OnWilma(self,event):73         self.model.set("Wilma","Flintstones")74         75     def OnBetty(self,event):76         self.model.set("Betty","Rubble")77         78     def OnCloseWindow(self,event):79         self.Destroy()80         81 if __name__ == ‘__main__‘:82     app = wx.PySimpleApp()83     frame = ModelExample(parent=None,id=-1)84     frame.Show()85     app.MainLoop()86