| 1 | n/a | from idlelib.delegator import Delegator |
|---|
| 2 | n/a | from idlelib.redirector import WidgetRedirector |
|---|
| 3 | n/a | |
|---|
| 4 | n/a | |
|---|
| 5 | n/a | class Percolator: |
|---|
| 6 | n/a | |
|---|
| 7 | n/a | def __init__(self, text): |
|---|
| 8 | n/a | # XXX would be nice to inherit from Delegator |
|---|
| 9 | n/a | self.text = text |
|---|
| 10 | n/a | self.redir = WidgetRedirector(text) |
|---|
| 11 | n/a | self.top = self.bottom = Delegator(text) |
|---|
| 12 | n/a | self.bottom.insert = self.redir.register("insert", self.insert) |
|---|
| 13 | n/a | self.bottom.delete = self.redir.register("delete", self.delete) |
|---|
| 14 | n/a | self.filters = [] |
|---|
| 15 | n/a | |
|---|
| 16 | n/a | def close(self): |
|---|
| 17 | n/a | while self.top is not self.bottom: |
|---|
| 18 | n/a | self.removefilter(self.top) |
|---|
| 19 | n/a | self.top = None |
|---|
| 20 | n/a | self.bottom.setdelegate(None) |
|---|
| 21 | n/a | self.bottom = None |
|---|
| 22 | n/a | self.redir.close() |
|---|
| 23 | n/a | self.redir = None |
|---|
| 24 | n/a | self.text = None |
|---|
| 25 | n/a | |
|---|
| 26 | n/a | def insert(self, index, chars, tags=None): |
|---|
| 27 | n/a | # Could go away if inheriting from Delegator |
|---|
| 28 | n/a | self.top.insert(index, chars, tags) |
|---|
| 29 | n/a | |
|---|
| 30 | n/a | def delete(self, index1, index2=None): |
|---|
| 31 | n/a | # Could go away if inheriting from Delegator |
|---|
| 32 | n/a | self.top.delete(index1, index2) |
|---|
| 33 | n/a | |
|---|
| 34 | n/a | def insertfilter(self, filter): |
|---|
| 35 | n/a | # Perhaps rename to pushfilter()? |
|---|
| 36 | n/a | assert isinstance(filter, Delegator) |
|---|
| 37 | n/a | assert filter.delegate is None |
|---|
| 38 | n/a | filter.setdelegate(self.top) |
|---|
| 39 | n/a | self.top = filter |
|---|
| 40 | n/a | |
|---|
| 41 | n/a | def removefilter(self, filter): |
|---|
| 42 | n/a | # XXX Perhaps should only support popfilter()? |
|---|
| 43 | n/a | assert isinstance(filter, Delegator) |
|---|
| 44 | n/a | assert filter.delegate is not None |
|---|
| 45 | n/a | f = self.top |
|---|
| 46 | n/a | if f is filter: |
|---|
| 47 | n/a | self.top = filter.delegate |
|---|
| 48 | n/a | filter.setdelegate(None) |
|---|
| 49 | n/a | else: |
|---|
| 50 | n/a | while f.delegate is not filter: |
|---|
| 51 | n/a | assert f is not self.bottom |
|---|
| 52 | n/a | f.resetcache() |
|---|
| 53 | n/a | f = f.delegate |
|---|
| 54 | n/a | f.setdelegate(filter.delegate) |
|---|
| 55 | n/a | filter.setdelegate(None) |
|---|
| 56 | n/a | |
|---|
| 57 | n/a | |
|---|
| 58 | n/a | def _percolator(parent): # htest # |
|---|
| 59 | n/a | import tkinter as tk |
|---|
| 60 | n/a | |
|---|
| 61 | n/a | class Tracer(Delegator): |
|---|
| 62 | n/a | def __init__(self, name): |
|---|
| 63 | n/a | self.name = name |
|---|
| 64 | n/a | Delegator.__init__(self, None) |
|---|
| 65 | n/a | |
|---|
| 66 | n/a | def insert(self, *args): |
|---|
| 67 | n/a | print(self.name, ": insert", args) |
|---|
| 68 | n/a | self.delegate.insert(*args) |
|---|
| 69 | n/a | |
|---|
| 70 | n/a | def delete(self, *args): |
|---|
| 71 | n/a | print(self.name, ": delete", args) |
|---|
| 72 | n/a | self.delegate.delete(*args) |
|---|
| 73 | n/a | |
|---|
| 74 | n/a | box = tk.Toplevel(parent) |
|---|
| 75 | n/a | box.title("Test Percolator") |
|---|
| 76 | n/a | x, y = map(int, parent.geometry().split('+')[1:]) |
|---|
| 77 | n/a | box.geometry("+%d+%d" % (x, y + 175)) |
|---|
| 78 | n/a | text = tk.Text(box) |
|---|
| 79 | n/a | p = Percolator(text) |
|---|
| 80 | n/a | pin = p.insertfilter |
|---|
| 81 | n/a | pout = p.removefilter |
|---|
| 82 | n/a | t1 = Tracer("t1") |
|---|
| 83 | n/a | t2 = Tracer("t2") |
|---|
| 84 | n/a | |
|---|
| 85 | n/a | def toggle1(): |
|---|
| 86 | n/a | (pin if var1.get() else pout)(t1) |
|---|
| 87 | n/a | def toggle2(): |
|---|
| 88 | n/a | (pin if var2.get() else pout)(t2) |
|---|
| 89 | n/a | |
|---|
| 90 | n/a | text.pack() |
|---|
| 91 | n/a | var1 = tk.IntVar(parent) |
|---|
| 92 | n/a | cb1 = tk.Checkbutton(box, text="Tracer1", command=toggle1, variable=var1) |
|---|
| 93 | n/a | cb1.pack() |
|---|
| 94 | n/a | var2 = tk.IntVar(parent) |
|---|
| 95 | n/a | cb2 = tk.Checkbutton(box, text="Tracer2", command=toggle2, variable=var2) |
|---|
| 96 | n/a | cb2.pack() |
|---|
| 97 | n/a | |
|---|
| 98 | n/a | if __name__ == "__main__": |
|---|
| 99 | n/a | import unittest |
|---|
| 100 | n/a | unittest.main('idlelib.idle_test.test_percolator', verbosity=2, |
|---|
| 101 | n/a | exit=False) |
|---|
| 102 | n/a | |
|---|
| 103 | n/a | from idlelib.idle_test.htest import run |
|---|
| 104 | n/a | run(_percolator) |
|---|
