Mercurial > cpython-lru_cache-weakref
annotate Lib/idlelib/Percolator.py @ 54294:dba767bc3155 legacy-trunk
remove mention of old ctypes version
| author | Benjamin Peterson <benjamin@python.org> |
|---|---|
| date | Sat, 23 May 2009 20:59:09 +0000 |
| parents | b53604fad54b |
| children | eab361617f6a |
| rev | line source |
|---|---|
| 13975 | 1 from WidgetRedirector import WidgetRedirector |
| 2 from Delegator import Delegator | |
| 3 | |
| 4 class Percolator: | |
| 5 | |
| 6 def __init__(self, text): | |
| 7 # XXX would be nice to inherit from Delegator | |
| 8 self.text = text | |
| 9 self.redir = WidgetRedirector(text) | |
| 10 self.top = self.bottom = Delegator(text) | |
| 11 self.bottom.insert = self.redir.register("insert", self.insert) | |
| 12 self.bottom.delete = self.redir.register("delete", self.delete) | |
| 13 self.filters = [] | |
| 14 | |
| 15 def close(self): | |
| 16 while self.top is not self.bottom: | |
| 17 self.removefilter(self.top) | |
| 18 self.top = None | |
| 19 self.bottom.setdelegate(None); self.bottom = None | |
| 20 self.redir.close(); self.redir = None | |
| 21 self.text = None | |
| 22 | |
| 23 def insert(self, index, chars, tags=None): | |
| 24 # Could go away if inheriting from Delegator | |
| 25 self.top.insert(index, chars, tags) | |
| 26 | |
| 27 def delete(self, index1, index2=None): | |
| 28 # Could go away if inheriting from Delegator | |
| 29 self.top.delete(index1, index2) | |
| 30 | |
| 31 def insertfilter(self, filter): | |
| 32 # Perhaps rename to pushfilter()? | |
| 33 assert isinstance(filter, Delegator) | |
| 34 assert filter.delegate is None | |
| 35 filter.setdelegate(self.top) | |
| 36 self.top = filter | |
| 37 | |
| 38 def removefilter(self, filter): | |
| 39 # XXX Perhaps should only support popfilter()? | |
| 40 assert isinstance(filter, Delegator) | |
| 41 assert filter.delegate is not None | |
| 42 f = self.top | |
| 43 if f is filter: | |
| 44 self.top = filter.delegate | |
| 45 filter.setdelegate(None) | |
| 46 else: | |
| 47 while f.delegate is not filter: | |
| 48 assert f is not self.bottom | |
| 49 f.resetcache() | |
| 50 f = f.delegate | |
| 51 f.setdelegate(filter.delegate) | |
| 52 filter.setdelegate(None) | |
| 53 | |
| 54 | |
| 55 def main(): | |
| 56 class Tracer(Delegator): | |
| 57 def __init__(self, name): | |
| 58 self.name = name | |
| 59 Delegator.__init__(self, None) | |
| 60 def insert(self, *args): | |
| 61 print self.name, ": insert", args | |
|
29794
94e5d1b8f696
SF patch #768187: replace apply(f, args, kwds) with f(*args, **kwds)
Raymond Hettinger <python@rcn.com>
parents:
18554
diff
changeset
|
62 self.delegate.insert(*args) |
| 13975 | 63 def delete(self, *args): |
| 64 print self.name, ": delete", args | |
|
29794
94e5d1b8f696
SF patch #768187: replace apply(f, args, kwds) with f(*args, **kwds)
Raymond Hettinger <python@rcn.com>
parents:
18554
diff
changeset
|
65 self.delegate.delete(*args) |
| 13975 | 66 root = Tk() |
| 67 root.wm_protocol("WM_DELETE_WINDOW", root.quit) | |
| 68 text = Text() | |
| 69 text.pack() | |
| 70 text.focus_set() | |
| 71 p = Percolator(text) | |
| 72 t1 = Tracer("t1") | |
| 73 t2 = Tracer("t2") | |
| 74 p.insertfilter(t1) | |
| 75 p.insertfilter(t2) | |
| 76 root.mainloop() | |
| 77 p.removefilter(t2) | |
| 78 root.mainloop() | |
| 79 p.insertfilter(t2) | |
| 80 p.removefilter(t1) | |
| 81 root.mainloop() | |
| 82 | |
| 83 if __name__ == "__main__": | |
|
47183
b53604fad54b
Tkinter rename reversal: remove tkinter package, adapt imports and docs.
Georg Brandl <georg@python.org>
parents:
47101
diff
changeset
|
84 from Tkinter import * |
| 13975 | 85 main() |