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#! /usr/bin/env python
# www9.py -- display the contents of a URL in a Text widget
# - set window title
# - make window resizable
# - update display while reading
# - vertical scroll bar
# - rewritten as class
import sys
import urllib
from Tkinter import *
def main():
if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
print "Usage:", sys.argv[0], "url"
sys.exit(2)
url = sys.argv[1]
viewer = Viewer()
viewer.load(url)
viewer.go()
class Viewer:
def __init__(self):
# Create root window
self.root = Tk()
self.root.minsize(1, 1)
# The Scrollbar *must* be created first
self.vbar = Scrollbar(self.root)
self.vbar.pack({'fill': 'y', 'side': 'right'})
self.text = Text(self.root)
self.text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
# Link Text widget and Scrollbar
self.text['yscrollcommand'] = (self.vbar, 'set')
self.vbar['command'] = (self.text, 'yview')
def load(self, url):
# Load a new URL into the window
fp = urllib.urlopen(url)
self.root.title(url)
self.text.delete('0.0', 'end')
while 1:
line = fp.readline()
if not line: break
self.text.insert('end', line)
self.root.update_idletasks()
fp.close()
def go(self):
# Start Tk main loop
self.root.mainloop()
main()
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