pyrandomgui.py

#!/usr/bin/python

from gi.repository import Gtk, GLib, Pango
from time import sleep
import threading
import random

class PyRandomWindow(Gtk.Window):

    def __init__(self):
        Gtk.Window.__init__(self, title="Random Select")

        self.set_position(Gtk.WindowPosition.CENTER)
        self.set_default_size(800, 600)

        self.box = Gtk.Box(spacing=6, orientation=Gtk.Orientation.VERTICAL)
        self.add(self.box)

        # button for starting random selection
        self.select_button = Gtk.Button()
        label = Gtk.Label()
        label.set_markup('<big><b>ZUFALL JETZT!!11</b></big>')
        self.select_button.add(label)
        self.select_button.connect("clicked", self.on_select_button_clicked)
        self.box.pack_start(self.select_button, False, False, 0)

        # list with one column with an editable text
        self.names_store = Gtk.ListStore(str)
        self.names_tree = Gtk.TreeView(self.names_store)
        self.names_renderer = Gtk.CellRendererText(editable=True, font="Sans Regular 24", xalign=0.5, alignment=Pango.Alignment.CENTER)
        self.names_renderer.connect("edited", self.on_cell_edited)
        self.names_tree.append_column(Gtk.TreeViewColumn("Name", self.names_renderer, text=0))
        self.box.pack_start(self.names_tree, True, True, 0)

        self.listbutton_box = Gtk.Box(spacing=6)
        self.box.pack_start(self.listbutton_box, False, False, 0)

        # button for adding new list entry
        self.add_button = Gtk.Button(label="+")
        self.add_button.connect("clicked", self.on_add_button_clicked)
        self.listbutton_box.pack_start(self.add_button, True, True, 0)

        # button for removing selected list entry
        self.del_button = Gtk.Button(label="-")
        self.del_button.connect("clicked", self.on_del_button_clicked)
        self.listbutton_box.pack_start(self.del_button, True, True, 0)

    def on_add_button_clicked(self, widget):
        self.names_store.append(['Name'])

    def on_del_button_clicked(self, widget):
        model, treeiter = self.names_tree.get_selection().get_selected()
        if treeiter != None:
            self.names_store.remove(treeiter)

    def on_select_button_clicked(self, widget):
        threading.Thread(target=self.select_random).start()

    def select_random(self):
        iterations = random.randint(20, 50) # how many items in list will be selected
        speed = 0.05 # seconds to wait untill next selection (will be increased each step)

        selection = self.names_tree.get_selection()
        selection.unselect_all() # unselect all

        iter = self.names_store.get_iter_first()

        if iter == None: # if no items
            return

        for i in range(0, iterations): # go over all list items
            if iter == None:
                iter = self.names_store.get_iter_first() # if last item start from beginning

            selection.select_iter(iter) # select and wait
            sleep(speed)
            speed += 0.01

            iter = self.names_store.iter_next(iter)

    def on_cell_edited(self, widget, path, text):
        self.names_store[path][0] = text

win = PyRandomWindow()
GLib.threads_init()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()