mirror of
https://github.com/python/cpython.git
synced 2025-07-21 10:15:46 +00:00
36e0a92442
svn+ssh://pythondev@svn.python.org/python/branches/p3yk
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r56454 | kurt.kaiser | 2007-07-18 22:26:14 -0700 (Wed, 18 Jul 2007) | 2 lines
Make relative imports explicit for py3k
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r56455 | kurt.kaiser | 2007-07-18 23:12:15 -0700 (Wed, 18 Jul 2007) | 2 lines
Was modifying dict during iteration.
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r56457 | guido.van.rossum | 2007-07-19 07:33:19 -0700 (Thu, 19 Jul 2007) | 2 lines
Fix failing test.
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r56466 | guido.van.rossum | 2007-07-19 20:58:16 -0700 (Thu, 19 Jul 2007) | 35 lines
Merged revisions 56413-56465 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r56439 | georg.brandl | 2007-07-17 23:37:55 -0700 (Tue, 17 Jul 2007) | 2 lines
Use "Unix" as platform name, not "UNIX".
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r56441 | guido.van.rossum | 2007-07-18 10:19:14 -0700 (Wed, 18 Jul 2007) | 3 lines
SF patch# 1755885 by Kurt Kaiser: show location of Unicode escape errors.
(Slightly tweaked for style and refcounts.)
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r56444 | kurt.kaiser | 2007-07-18 12:58:42 -0700 (Wed, 18 Jul 2007) | 2 lines
Fix failing unicode test caused by change to ast.c at r56441
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r56451 | georg.brandl | 2007-07-18 15:36:53 -0700 (Wed, 18 Jul 2007) | 2 lines
Add description for wave.setcomptype() values
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r56456 | walter.doerwald | 2007-07-19 06:04:38 -0700 (Thu, 19 Jul 2007) | 3 lines
Document that codecs.lookup() returns a CodecInfo object.
(fixes SF bug #1754453).
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r56463 | facundo.batista | 2007-07-19 16:57:38 -0700 (Thu, 19 Jul 2007) | 6 lines
Added a select.select call in the test server loop to make sure the
socket is ready to be read from before attempting a read (this
prevents an error 10035 on some Windows platforms). [GSoC - Alan
McIntyre]
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85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
from .WidgetRedirector import WidgetRedirector
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from .Delegator import Delegator
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class Percolator:
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def __init__(self, text):
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# XXX would be nice to inherit from Delegator
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self.text = text
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self.redir = WidgetRedirector(text)
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self.top = self.bottom = Delegator(text)
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self.bottom.insert = self.redir.register("insert", self.insert)
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self.bottom.delete = self.redir.register("delete", self.delete)
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self.filters = []
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def close(self):
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while self.top is not self.bottom:
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self.removefilter(self.top)
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self.top = None
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self.bottom.setdelegate(None); self.bottom = None
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self.redir.close(); self.redir = None
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self.text = None
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def insert(self, index, chars, tags=None):
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# Could go away if inheriting from Delegator
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self.top.insert(index, chars, tags)
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def delete(self, index1, index2=None):
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# Could go away if inheriting from Delegator
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self.top.delete(index1, index2)
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def insertfilter(self, filter):
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# Perhaps rename to pushfilter()?
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assert isinstance(filter, Delegator)
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assert filter.delegate is None
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filter.setdelegate(self.top)
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self.top = filter
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def removefilter(self, filter):
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# XXX Perhaps should only support popfilter()?
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assert isinstance(filter, Delegator)
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assert filter.delegate is not None
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f = self.top
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if f is filter:
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self.top = filter.delegate
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filter.setdelegate(None)
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else:
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while f.delegate is not filter:
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assert f is not self.bottom
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f.resetcache()
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f = f.delegate
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f.setdelegate(filter.delegate)
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filter.setdelegate(None)
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def main():
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class Tracer(Delegator):
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def __init__(self, name):
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self.name = name
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Delegator.__init__(self, None)
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def insert(self, *args):
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print(self.name, ": insert", args)
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self.delegate.insert(*args)
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def delete(self, *args):
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print(self.name, ": delete", args)
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self.delegate.delete(*args)
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root = Tk()
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root.wm_protocol("WM_DELETE_WINDOW", root.quit)
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text = Text()
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text.pack()
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text.focus_set()
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p = Percolator(text)
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t1 = Tracer("t1")
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t2 = Tracer("t2")
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p.insertfilter(t1)
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p.insertfilter(t2)
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root.mainloop()
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p.removefilter(t2)
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root.mainloop()
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p.insertfilter(t2)
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p.removefilter(t1)
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root.mainloop()
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if __name__ == "__main__":
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from Tkinter import *
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main()
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