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#!/usr/bin/env python
# -*- coding: iso-8859-15 -*-

import wx

wx.SetDefaultPyEncoding("iso-8859-15")


class ChatList(wx.HtmlListBox):

    _data = []
   
    def get_data(self):
        return self._data
   
    def set_data(self, data):
        self._data = data
        self.SetItemCount(len(data))
   
    data = property(get_data, set_data)

    def OnGetItem(self, n):
        return self._data[n]


class MyFrame(wx.Frame):
    
    def __init__(
        self, parent = None, title = "Example", size = wx.Size(550, 420)
    ):
        wx.Frame.__init__(self, parent, -1, title, size = size)
        
        panel = wx.Panel(self)
        
        vbox_main = wx.BoxSizer(wx.VERTICAL)
        panel.SetSizer(vbox_main)
        
        chatlist = ChatList(panel)
        vbox_main.Add(chatlist, 1, wx.ALL | wx.EXPAND, 5)
        self.chatlist = chatlist
        
        
        txt_message = wx.TextCtrl(panel)
        self.txt_message = txt_message
        vbox_main.Add(txt_message, 0, wx.EXPAND | wx.ALL, 5)
        txt_message.SetFocus()
        
        btn_insert = wx.Button(panel, label = "Insert")
        vbox_main.Add(btn_insert, 0, wx.ALL, 5)
        btn_insert.SetDefault()
        btn_insert.Bind(wx.EVT_BUTTON, self.insert_message)
    
    
    def insert_message(self, event):
        message = self.txt_message.GetValue()
        self.txt_message.SetValue("")
        message = message.replace("\\n", "<br>\n")
        chatlist = self.chatlist
        
        data = chatlist.data
        data.append('<b><font color="blue">Hallo</font> Welt:</b>%s' % message)
        # Maximal 10000 Einträge zulassen
        if len(data) > 10000:
            data.pop(0)
        datalen = len(data)
        chatlist.SetItemCount(datalen)
        
        chatlist.SetSelection(datalen - 1)
        chatlist.Refresh(datalen - 1)
        chatlist.SetSelection(datalen - 1)


def main():
    """Testing"""
    app = wx.PySimpleApp()
    f = MyFrame()
    f.Center()
    f.Show()
    app.MainLoop()


if __name__ == "__main__":
    main()