cpython/Tools/idle/HelpWindow.py

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import os
import sys
from Tkinter import *
class HelpWindow:
helpfile = "help.txt"
helptitle = "Help Window"
def __init__(self, root=None):
if not root:
import Tkinter
root = Tkinter._default_root
if root:
self.top = top = Toplevel(root)
else:
self.top = top = root = Tk()
helpfile = self.helpfile
if not os.path.exists(helpfile):
base = os.path.basename(self.helpfile)
for dir in sys.path:
fullname = os.path.join(dir, base)
if os.path.exists(fullname):
helpfile = fullname
break
try:
f = open(helpfile)
data = f.read()
f.close()
except IOError, msg:
data = "Can't open the help file (%s)" % `helpfile`
top.protocol("WM_DELETE_WINDOW", self.close_command)
top.wm_title(self.helptitle)
self.close_button = Button(top, text="close",
command=self.close_command)
self.close_button.pack(side="bottom")
self.vbar = vbar = Scrollbar(top, name="vbar")
self.text = text = Text(top)
vbar["command"] = text.yview
text["yscrollcommand"] = vbar.set
vbar.pack(side="right", fill="y")
text.pack(side="left", fill="both", expand=1)
text.insert("1.0", data)
text.config(state="disabled")
text.see("1.0")
def close_command(self):
self.top.destroy()
def main():
h = HelpWindow()
h.top.mainloop()
if __name__ == "__main__":
main()