import wx
import os

class MyFrame(wx.Frame):
    def __init__(self, parent, title):
        wx.Frame.__init__(self, parent, title=title, size=(200, -1))
        self.control = wx.TextCtrl(self, style=wx.TE_MULTILINE)
        self.dirname = ""
        self.filename = ""
        self.content = ""
        self.Show()

        # Attribute
        statusBar = self.CreateStatusBar()
        fileMenu = wx.Menu()
        optMenu = wx.Menu()
        openf = fileMenu.Append(wx.ID_OPEN, "Open..", "Open a file")
        exit = fileMenu.Append(wx.ID_EXIT, "Exit", "Quit the program")
        about = optMenu.Append(wx.ID_ABOUT, "About", "About this software")

        # Assign menus to menubar and activate menu bar
        menuBar = wx.MenuBar()
        menuBar.Append(fileMenu, "File")
        menuBar.Append(optMenu, "Option")
        self.SetMenuBar(menuBar)

        # Bind EVT to the menu choices
        self.Bind(wx.EVT_MENU, self.OnOpen, openf)
        self.Bind(wx.EVT_MENU, self.OnExit, exit)
        self.Bind(wx.EVT_MENU, self.OnAbout, about)

        # Setup BoxSizer
        self.sizer2 = wx.BoxSizer(wx.HORIZONTAL)
        self.buttons = []
        for i in range(0,6):
            self.buttons.append(wx.Button(self, -1, "Button &"+str(i)))
            self.sizer2.Add(self.button[i], 1, wx.EXPAND)
        # Use some sizers to see layout options
        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.control, 1, wx.EXPAND)
        self.sizer.Add(self.sizer2, 0, wx.EXPAND)
        # Layout sizers
        self.SetSizer(self.sizer)
        self.SetAutoLayout(1)
        self.sizer.Fit(self)
        #self.Show()

    def OnOpen(self, event):
        self.content = ""
        opendlg = wx.FileDialog(self, "Open a file..", self.dirname, "", "*.*", wx.OPEN)
        if opendlg.ShowModal() == wx.ID_OK:
            self.dirname = opendlg.GetDirectory()
            self.filename = opendlg.GetFilename()
            f = open(os.path.join(self.dirname, self.filename), "r")
            self.content = f.read()
            self.control.SetValue(self.content) # set TextCtrl value
            f.close()
        opendlg.Destroy()

    def OnExit(self, event):
        if self.control.GetValue() != self.content:
            self.control.SaveFile(os.path.join(self.dirname, self.filename))
        self.Destroy()

    def OnAbout(self, event):
        aboutdlg = wx.MessageDialog(self, "This is a free dummy editor.", "About editor", wx.OK)
        aboutdlg.ShowModal()
        aboutdlg.Destroy()

app = wx.App(True)
frame = MyFrame(None, title="Editor")
app.MainLoop()