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

import wx, os, threading, time

#Shell prikaz s dlouhym prubehem
COMMAND = 'find / -name "*.*~"'
COMMAND = 'ls -l'

# Prirazeni ID novemu eventu, ktery se bude volat ve
#vlakne procesu
EVT_RESULT_ID = wx.NewId()
    
class InfoWindow(wx.MiniFrame):
    def __init__(self,parent,infotext):
        self.parent = parent
        self.infotext = infotext
        wx.MiniFrame.__init__(self,parent,-1,title='Info o průběhu procesu')
        wx.StaticText(self,-1,self.infotext)
        self.status = wx.StaticText(self, -1, 'Čekejte pracuji...', pos=(0,20))
        
        #Napojeni eventu pro indikaci konce threadu k oknu InfoWindow:
        self.Connect(-1, -1, EVT_RESULT_ID, self.onResult)
        self.parent.Disable()
    def onResult(self, event):
        """
        Tato metoda se vola vzdy, kdyz proces v threadu zavola
        funkci wx.PostEvent
        """
        if event.data == None:
            self.parent.Enable()
            self.Destroy()

class WorkerThread(threading.Thread):
    """Trida vlakna nove spusteneho procesu"""
    def __init__(self, notify_window, command):
        """Init Worker Thread Class."""
        threading.Thread.__init__(self)
        self._notify_window = notify_window
        self._want_abort = 0
        self.command = command
        #self.start nastartuje vlastni proces, ale toto volani se da presunou
        #take do nejake akce gui widgetu:
        self.start()

    def run(self):
        """Spousti proces v novem vlaknu"""

        r = os.popen(self.command)

        for eachResult in r:
            #Zde bychom mohli posilat nejakou informaci widgetu "_notify_window"
            #Napriklad vysledek prikazu treba takto:
            #wx.PostEvent(self._notify_window, ResultEvent(eachResult))
            pass
        #pokud bude prikaz vykonan rychle, nechame okno chvilku zobrazene,
        #at neni uzivatel prilis zmaten a muze si alespon precist co se delo:
        time.sleep(1)
            
        #Po skonceni procesu posleme do InfoWindow "None" a
        #Infowindow se zavre
        wx.PostEvent(self._notify_window, ResultEvent(None))
        
class ResultEvent(wx.PyEvent):
    """Generuje event EVT_RESULT_ID a nese sebou doplnkova data"""
    def __init__(self, data):
        """Init Result Event."""
        wx.PyEvent.__init__(self)
        self.SetEventType(EVT_RESULT_ID)
        self.data = data

class StartButton(wx.Button):
    def __init__(self, parent):
        self.parent = parent
        wx.Button.__init__(self, parent,-1,
                           label = "spustit process",
                           size = (150,30),
                           pos = (10,10) )
        self.Bind(wx.EVT_BUTTON, self.onButtonClick)
    def onButtonClick(self, event):
        dlg = InfoWindow(self.parent, infotext='Vykonavam prikaz: %s' % COMMAND) 
        WorkerThread(dlg,COMMAND)
        dlg.Show()
        
class TopFrame(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self, parent, id, title)
        panel = wx.Panel(self)
        button = StartButton(panel)
        
class App(wx.App):
    def OnInit(self):
        self.main = TopFrame(None,-1,'Proces v threadu')
        self.main.Show()
        self.SetTopWindow(self.main)
        return True
    
if __name__ == '__main__':
    application = App(1)
    application.MainLoop()