Mercurial > repos > rliterman > csp2

comparison CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/idlelib/percolator.py @ 68:5028fdace37b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 16:23:26 -0400
parents
children
comparison
equal deleted inserted replaced
67:0e9998148a16 68:5028fdace37b
1 from idlelib.delegator import Delegator
2 from idlelib.redirector import WidgetRedirector
3
4
5 class Percolator:
6
7 def __init__(self, text):
8 # XXX would be nice to inherit from Delegator
9 self.text = text
10 self.redir = WidgetRedirector(text)
11 self.top = self.bottom = Delegator(text)
12 self.bottom.insert = self.redir.register("insert", self.insert)
13 self.bottom.delete = self.redir.register("delete", self.delete)
14 self.filters = []
15
16 def close(self):
17 while self.top is not self.bottom:
18 self.removefilter(self.top)
19 self.top = None
20 self.bottom.setdelegate(None)
21 self.bottom = None
22 self.redir.close()
23 self.redir = None
24 self.text = None
25
26 def insert(self, index, chars, tags=None):
27 # Could go away if inheriting from Delegator
28 self.top.insert(index, chars, tags)
29
30 def delete(self, index1, index2=None):
31 # Could go away if inheriting from Delegator
32 self.top.delete(index1, index2)
33
34 def insertfilter(self, filter):
35 # Perhaps rename to pushfilter()?
36 assert isinstance(filter, Delegator)
37 assert filter.delegate is None
38 filter.setdelegate(self.top)
39 self.top = filter
40
41 def removefilter(self, filter):
42 # XXX Perhaps should only support popfilter()?
43 assert isinstance(filter, Delegator)
44 assert filter.delegate is not None
45 f = self.top
46 if f is filter:
47 self.top = filter.delegate
48 filter.setdelegate(None)
49 else:
50 while f.delegate is not filter:
51 assert f is not self.bottom
52 f.resetcache()
53 f = f.delegate
54 f.setdelegate(filter.delegate)
55 filter.setdelegate(None)
56
57
58 def _percolator(parent): # htest #
59 import tkinter as tk
60
61 class Tracer(Delegator):
62 def __init__(self, name):
63 self.name = name
64 Delegator.__init__(self, None)
65
66 def insert(self, *args):
67 print(self.name, ": insert", args)
68 self.delegate.insert(*args)
69
70 def delete(self, *args):
71 print(self.name, ": delete", args)
72 self.delegate.delete(*args)
73
74 box = tk.Toplevel(parent)
75 box.title("Test Percolator")
76 x, y = map(int, parent.geometry().split('+')[1:])
77 box.geometry("+%d+%d" % (x, y + 175))
78 text = tk.Text(box)
79 p = Percolator(text)
80 pin = p.insertfilter
81 pout = p.removefilter
82 t1 = Tracer("t1")
83 t2 = Tracer("t2")
84
85 def toggle1():
86 (pin if var1.get() else pout)(t1)
87 def toggle2():
88 (pin if var2.get() else pout)(t2)
89
90 text.pack()
91 var1 = tk.IntVar(parent)
92 cb1 = tk.Checkbutton(box, text="Tracer1", command=toggle1, variable=var1)
93 cb1.pack()
94 var2 = tk.IntVar(parent)
95 cb2 = tk.Checkbutton(box, text="Tracer2", command=toggle2, variable=var2)
96 cb2.pack()
97
98 if __name__ == "__main__":
99 from unittest import main
100 main('idlelib.idle_test.test_percolator', verbosity=2, exit=False)
101
102 from idlelib.idle_test.htest import run
103 run(_percolator)