Terry Jan Reedy | 6fa5bdc | 2016-05-28 13:22:31 -0400 | [diff] [blame] | 1 | from idlelib.delegator import Delegator |
Terry Jan Reedy | bfbaa6b | 2016-08-31 00:50:55 -0400 | [diff] [blame] | 2 | from idlelib.redirector import WidgetRedirector |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 3 | |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 4 | |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 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 |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 20 | self.bottom.setdelegate(None) |
| 21 | self.bottom = None |
| 22 | self.redir.close() |
| 23 | self.redir = None |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 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 | |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 57 | |
| 58 | def _percolator(parent): # htest # |
Terry Jan Reedy | a2fc99e | 2014-05-25 18:44:05 -0400 | [diff] [blame] | 59 | import tkinter as tk |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 60 | |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 61 | class Tracer(Delegator): |
| 62 | def __init__(self, name): |
| 63 | self.name = name |
| 64 | Delegator.__init__(self, None) |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 65 | |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 66 | def insert(self, *args): |
Guido van Rossum | be19ed7 | 2007-02-09 05:37:30 +0000 | [diff] [blame] | 67 | print(self.name, ": insert", args) |
Raymond Hettinger | 931237e | 2003-07-09 18:48:24 +0000 | [diff] [blame] | 68 | self.delegate.insert(*args) |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 69 | |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 70 | def delete(self, *args): |
Guido van Rossum | be19ed7 | 2007-02-09 05:37:30 +0000 | [diff] [blame] | 71 | print(self.name, ": delete", args) |
Raymond Hettinger | 931237e | 2003-07-09 18:48:24 +0000 | [diff] [blame] | 72 | self.delegate.delete(*args) |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 73 | |
| 74 | box = tk.Toplevel(parent) |
| 75 | box.title("Test Percolator") |
Terry Jan Reedy | a748032 | 2016-07-10 17:28:10 -0400 | [diff] [blame] | 76 | x, y = map(int, parent.geometry().split('+')[1:]) |
| 77 | box.geometry("+%d+%d" % (x, y + 175)) |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 78 | text = tk.Text(box) |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 79 | p = Percolator(text) |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 80 | pin = p.insertfilter |
| 81 | pout = p.removefilter |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 82 | t1 = Tracer("t1") |
| 83 | t2 = Tracer("t2") |
Terry Jan Reedy | a2fc99e | 2014-05-25 18:44:05 -0400 | [diff] [blame] | 84 | |
| 85 | def toggle1(): |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 86 | (pin if var1.get() else pout)(t1) |
Terry Jan Reedy | a2fc99e | 2014-05-25 18:44:05 -0400 | [diff] [blame] | 87 | def toggle2(): |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 88 | (pin if var2.get() else pout)(t2) |
Terry Jan Reedy | a2fc99e | 2014-05-25 18:44:05 -0400 | [diff] [blame] | 89 | |
| 90 | text.pack() |
Terry Jan Reedy | b60adc5 | 2016-06-21 18:41:38 -0400 | [diff] [blame] | 91 | var1 = tk.IntVar(parent) |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 92 | cb1 = tk.Checkbutton(box, text="Tracer1", command=toggle1, variable=var1) |
Terry Jan Reedy | a2fc99e | 2014-05-25 18:44:05 -0400 | [diff] [blame] | 93 | cb1.pack() |
Terry Jan Reedy | b60adc5 | 2016-06-21 18:41:38 -0400 | [diff] [blame] | 94 | var2 = tk.IntVar(parent) |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 95 | cb2 = tk.Checkbutton(box, text="Tracer2", command=toggle2, variable=var2) |
Terry Jan Reedy | a2fc99e | 2014-05-25 18:44:05 -0400 | [diff] [blame] | 96 | cb2.pack() |
| 97 | |
David Scherer | 7aced17 | 2000-08-15 01:13:23 +0000 | [diff] [blame] | 98 | if __name__ == "__main__": |
Terry Jan Reedy | 092473e | 2016-05-17 22:48:22 -0400 | [diff] [blame] | 99 | import unittest |
| 100 | unittest.main('idlelib.idle_test.test_percolator', verbosity=2, |
| 101 | exit=False) |
| 102 | |
Terry Jan Reedy | a2fc99e | 2014-05-25 18:44:05 -0400 | [diff] [blame] | 103 | from idlelib.idle_test.htest import run |
| 104 | run(_percolator) |