138 lines
3.2 KiB
Python
Executable File
138 lines
3.2 KiB
Python
Executable File
#! /usr/bin/env python
|
|
|
|
# www11.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
|
|
# - editable url entry and reload button
|
|
# - error dialog
|
|
|
|
import sys
|
|
import urllib
|
|
from Tkinter import *
|
|
import Dialog
|
|
|
|
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)
|
|
|
|
# Create topframe for the entry and button
|
|
self.topframe = Frame(self.root)
|
|
self.topframe.pack({'fill': 'x'})
|
|
|
|
# Create a label in front of the entry
|
|
self.urllabel = Label(self.topframe, {'text': 'URL:'})
|
|
self.urllabel.pack({'side': 'left'})
|
|
|
|
# Create the entry containing the URL
|
|
self.entry = Entry(self.topframe,
|
|
{'relief': 'sunken', 'border': 2})
|
|
self.entry.pack({'side': 'left', 'fill': 'x', 'expand': 1})
|
|
self.entry.bind('<Return>', self.loadit)
|
|
|
|
# Create the button
|
|
self.reload = Button(self.topframe,
|
|
{'text': 'Reload',
|
|
'command': self.reload})
|
|
self.reload.pack({'side': 'right'})
|
|
|
|
# Create botframe for the text and scrollbar
|
|
self.botframe = Frame(self.root)
|
|
self.botframe.pack({'fill': 'both', 'expand': 1})
|
|
|
|
# The Scrollbar *must* be created first
|
|
self.vbar = Scrollbar(self.botframe)
|
|
self.vbar.pack({'fill': 'y', 'side': 'right'})
|
|
self.text = Text(self.botframe)
|
|
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')
|
|
|
|
self.url = None
|
|
|
|
def load(self, url):
|
|
# Load a new URL into the window
|
|
fp, url = self.urlopen(url)
|
|
if not fp:
|
|
return
|
|
|
|
self.url = url
|
|
|
|
self.root.title(url)
|
|
|
|
self.entry.delete('0', 'end')
|
|
self.entry.insert('end', url)
|
|
|
|
self.text.delete('0.0', 'end')
|
|
|
|
while 1:
|
|
line = fp.readline()
|
|
if not line: break
|
|
if line[-2:] == '\r\n': line = line[:-2] + '\n'
|
|
self.text.insert('end', line)
|
|
self.root.update_idletasks()
|
|
|
|
fp.close()
|
|
|
|
def urlopen(self, url):
|
|
# Open a URL --
|
|
# return (fp, url) if successful
|
|
# display dialog and return (None, url) for errors
|
|
try:
|
|
fp = urllib.urlopen(url)
|
|
except IOError, msg:
|
|
import types
|
|
if type(msg) == types.TupleType and len(msg) == 4:
|
|
if msg[1] == 302:
|
|
m = msg[3]
|
|
if m.has_key('location'):
|
|
url = m['location']
|
|
return self.urlopen(url)
|
|
elif m.has_key('uri'):
|
|
url = m['uri']
|
|
return self.urlopen(url)
|
|
self.errordialog(IOError, msg)
|
|
fp = None
|
|
return fp, url
|
|
|
|
def errordialog(self, exc, msg):
|
|
# Display an error dialog -- return when the user clicks OK
|
|
Dialog.Dialog(self.root, {
|
|
'text': str(msg),
|
|
'title': exc,
|
|
'bitmap': 'error',
|
|
'default': 0,
|
|
'strings': ('OK',),
|
|
})
|
|
|
|
def go(self):
|
|
# Start Tk main loop
|
|
self.root.mainloop()
|
|
|
|
def reload(self, *args):
|
|
# Callback for Reload button
|
|
if self.url:
|
|
self.load(self.url)
|
|
|
|
def loadit(self, *args):
|
|
# Callback for <Return> event in entry
|
|
self.load(self.entry.get())
|
|
|
|
main()
|