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()