#!/usr/bin/env python
# -*- coding: utf-8 -*-

'''

Pouziti signalu ve VxWindows pomoci tridy Dispatcher

'''

import wx
import wx.py.dispatcher as Dispatcher

class MyButton(wx.Button):
    def __init__(self,*args,**kwargs):
        wx.Button.__init__(self,*args,**kwargs)
        self.Bind(wx.EVT_BUTTON, self.OnButtonClick)
        self.clickedCounter = 0
    def OnButtonClick(self, event):
        self.clickedCounter += 1
        Dispatcher.send('clicked',sender=self,eventCount=self.clickedCounter)

class EventFrame(wx.Frame):
    def __init__(self, parent, id):
        wx.Frame.__init__(self, parent, id, u'Okno s tlačítkem', 
                size=(400, 200))
        self.panel = wx.Panel(self)                              
        self.button = MyButton(self.panel, 
                               label="Klikni si!", 
                               pos=(100, 15), 
                               size=(100,25), 
                               name='tlacitko')
        self.text = None
        
        Dispatcher.connect(self.onButtonClick,'clicked', self.button)
        Dispatcher.connect(self.printLabel,'clicked', self.button)
        
    def onButtonClick(self,signal,sender,eventCount):
        if eventCount % 2 == 0: 
            sender.SetLabel(u'Sudá je bílá')
            self.panel.SetBackgroundColour('White')
        else:
            sender.SetLabel(u'Lichá je zelená')
            self.panel.SetBackgroundColour('Green')
    
    def printLabel(self,signal,sender,eventCount):
        '''
        Tato funkce je jaksi navic - pouze na ukazku, ze jde priradit signal 
        k vice metodam.
        '''
        if self.text : 
            self.text.Destroy()
        self.text = wx.StaticText(self.panel, -1, 
                      u'Jméno widgetu: "%s"\nZachycený signál: "%s"\nCelkový počet kliknutí: %d' % (self.button.GetName(),
                             signal,
                             eventCount), 
                      pos=(70, 60))
        self.text.SetBackgroundColour('Yellow')
        self.panel.Refresh()
if __name__ == '__main__':
    app = wx.PySimpleApp()
    frame = EventFrame(parent=None, id=-1)
    frame.Show()
    app.MainLoop()