mirror of https://github.com/python/cpython
158 lines
4.3 KiB
Python
Executable File
158 lines
4.3 KiB
Python
Executable File
#! /ufs/guido/bin/sgi/tkpython
|
|
|
|
# A Python program implementing rmt, an application for remotely
|
|
# controlling other Tk applications.
|
|
# Cf. Ousterhout, Tcl and the Tk Toolkit, Figs. 27.5-8, pp. 273-276.
|
|
|
|
# Note that because of forward references in the original, we
|
|
# sometimes delay bindings until after the corresponding procedure is
|
|
# defined. We also introduce names for some unnamed code blocks in
|
|
# the original because of restrictions on lambda forms in Python.
|
|
|
|
from Tkinter import *
|
|
|
|
# 1. Create basic application structure: menu bar on top of
|
|
# text widget, scrollbar on right.
|
|
|
|
root = Tk()
|
|
tk = root.tk
|
|
mBar = Frame(root, {'relief': 'raised', 'bd': 2,
|
|
Pack: {'side': 'top', 'fill': 'x'}})
|
|
f = Frame(root)
|
|
f.pack({'expand': 1, 'fill': 'both'})
|
|
s = Scrollbar(f, {'relief': 'flat',
|
|
Pack: {'side': 'right', 'fill': 'y'}})
|
|
t = Text(f, {'relief': 'raised', 'bd': 2, 'yscrollcommand': (s, 'set'),
|
|
'setgrid': 1,
|
|
Pack: {'side': 'left', 'fill': 'both', 'expand': 1}})
|
|
|
|
t.tag_config('bold', {'font': '-Adobe-Courier-Bold-R-Normal-*-120-*'})
|
|
s['command'] = (t, 'yview')
|
|
root.title('Tk Remote Controller')
|
|
root.iconname('Tk Remote')
|
|
|
|
# 2. Create menu button and menus.
|
|
|
|
file = Menubutton(mBar, {'text': 'File', 'underline': 0,
|
|
Pack: {'side': 'left'}})
|
|
file_m = Menu(file)
|
|
file['menu'] = file_m
|
|
file_m_apps = Menu(file_m)
|
|
file_m.add('cascade', {'label': 'Select Application', 'underline': 0,
|
|
'menu': file_m_apps})
|
|
file_m.add('command', {'label': 'Quit', 'underline': 0, 'command': 'exit'})
|
|
|
|
# 3. Create bindings for text widget to allow commands to be
|
|
# entered and information to be selected. New characters
|
|
# can only be added at the end of the text (can't ever move
|
|
# insertion point).
|
|
|
|
def single1(e):
|
|
x = e.x
|
|
y = e.y
|
|
t.setvar('tk_priv(selectMode)', 'char')
|
|
t.mark_set('anchor', At(x, y))
|
|
# Should focus W
|
|
t.bind('<1>', single1)
|
|
|
|
def double1(e):
|
|
x = e.x
|
|
y = e.y
|
|
t.setvar('tk_priv(selectMode)', 'word')
|
|
t.tk_textSelectTo(At(x, y))
|
|
t.bind('<Double-1>', double1)
|
|
|
|
def triple1(e):
|
|
x = e.x
|
|
y = e.y
|
|
t.setvar('tk_priv(selectMode)', 'line')
|
|
t.tk_textSelectTo(At(x, y))
|
|
t.bind('<Triple-1>', triple1)
|
|
|
|
def returnkey(e):
|
|
t.insert(AtInsert(), '\n')
|
|
invoke()
|
|
t.bind('<Return>', returnkey)
|
|
|
|
def controlv(e):
|
|
t.insert(AtInsert(), t.selection_get())
|
|
t.yview_pickplace(AtInsert())
|
|
if t.index(AtInsert())[-2:] == '.0':
|
|
invoke()
|
|
t.bind('<Control-v>', controlv)
|
|
|
|
# 4. Procedure to backspace over one character, as long as
|
|
# the character isn't part of the prompt.
|
|
|
|
def backspace(e):
|
|
if t.index('promptEnd') != t.index('insert - 1 char'):
|
|
t.delete('insert - 1 char', AtInsert())
|
|
t.yview_pickplace(AtInsert())
|
|
t.bind('<BackSpace>', backspace)
|
|
t.bind('<Control-h>', backspace)
|
|
t.bind('<Delete>', backspace)
|
|
|
|
|
|
# 5. Procedure that's invoked when return is typed: if
|
|
# there's not yet a complete command (e.g. braces are open)
|
|
# then do nothing. Otherwise, execute command (locally or
|
|
# remotely), output the result or error message, and issue
|
|
# a new prompt.
|
|
|
|
def invoke():
|
|
cmd = t.get('promptEnd + 1 char', AtInsert())
|
|
if t.getboolean(tk.call('info', 'complete', cmd)): # XXX
|
|
if app == root.winfo_name():
|
|
msg = tk.call('eval', cmd) # XXX
|
|
else:
|
|
msg = t.send(app, cmd)
|
|
if msg:
|
|
t.insert(AtInsert(), msg + '\n')
|
|
prompt()
|
|
t.yview_pickplace(AtInsert())
|
|
|
|
def prompt():
|
|
t.insert(AtInsert(), app + ': ')
|
|
t.mark_set('promptEnd', 'insert - 1 char')
|
|
t.tag_add('bold', 'insert linestart', 'promptEnd')
|
|
|
|
# 6. Procedure to select a new application. Also changes
|
|
# the prompt on the current command line to reflect the new
|
|
# name.
|
|
|
|
def newApp(appName):
|
|
global app
|
|
app = appName
|
|
t.delete('promptEnd linestart', 'promptEnd')
|
|
t.insert('promptEnd', appName + ':')
|
|
t.tag_add('bold', 'promptEnd linestart', 'promptEnd')
|
|
|
|
def fillAppsMenu():
|
|
file_m_apps.add('command')
|
|
file_m_apps.delete(0, 'last')
|
|
names = root.winfo_interps()
|
|
names = map(None, names) # convert tuple to list
|
|
names.sort()
|
|
for name in names:
|
|
try:
|
|
root.send(name, 'winfo name .')
|
|
except TclError:
|
|
# Inoperative window -- ignore it
|
|
pass
|
|
else:
|
|
file_m_apps.add('command', {'label': name,
|
|
'command':
|
|
lambda name=name:
|
|
newApp(name)})
|
|
|
|
file_m_apps['postcommand'] = fillAppsMenu
|
|
mBar.tk_menuBar(file)
|
|
|
|
# 7. Miscellaneous initialization.
|
|
|
|
app = root.winfo_name()
|
|
prompt()
|
|
t.focus()
|
|
|
|
root.mainloop()
|