[pygtk] progressbar for file managing

[Fabian Braennstroem]

Hi,

I would like to add a progressbar for file managing such as copying,
deleting, moving. Unfortunately I don't understand the handling of
the progressbar...
As a first try I would like to use the 'pulse' function for the
progressbar, i.e. as long as I copying files I would like to 'pulse'
the bar. Below you can see a small example; I get the progressbar
moving, but not during the copying process :-(

#!/usr/bin/env python


import pygtk
pygtk.require('2.0')
import gtk
import shutil
from time import sleep


file1="/home/fab/.bashrc"

class Buttons:
    def callback(self, widget, data=None):
        i=0
        n=100

        self.progress.pulse()
        self.progress.set_text("Calculating....")
        self.progress.grab_add()

        shutil.copy(file1,"progressbar_copy")
        while i < n:
            sleep(0.015)
#            self.progress.set_fraction(i/(n - 1.0))
            self.progress.pulse()
            i += 1

            while gtk.events_pending():
                gtk.main_iteration_do(False)

        self.progress.set_fraction(0.0)
        self.progress.set_text("")
        self.progress.grab_remove()

    def __init__(self):
        self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)

        self.window.connect("destroy", lambda wid: gtk.main_quit())
        self.window.connect("delete_event", lambda
a1,a2:gtk.main_quit())
        self.window.set_border_width(10)
        box = gtk.HBox()

        self.progress= gtk.ProgressBar()
        button = gtk.Button("Button")
        button.connect("clicked", self.callback, "cool button")

        button.show()
        self.progress.show()
        box.add(self.progress)
        box.add(button)
        box.show()


        self.window.add(box)
        self.window.show()

def main():
    gtk.main()
    return 0

if __name__ == "__main__":
    Buttons()
    main()


A next step would be, to display the remaing bytes and percentage of
the copied file until completion (like the midnight commander is
doing). How can I achive this? The progressbar has to know the size
and the actual copied/moved/deleted number of bytes... Does anyone
has an idea? Would be nice ...

I am doing the file managing with 'shutil' or 'os' modules.

Greetings!
Fabian