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Issue #22115: Fixed tracing Tkinter variables:

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* tracing in the "u" mode now works
* trace_vdelete() with wrong mode no longer break tracing
* trace_vinfo() now always returns a list of pairs of strings
This commit is contained in:
Serhiy Storchaka 2016-06-26 17:42:23 +03:00
parent e7614dd07d
commit 745a407df8
3 changed files with 66 additions and 8 deletions
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19
Lib/tkinter/__init__.py
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@ -271,7 +271,7 @@ class Variable:
Return the name of the callback.
"""
f = CallWrapper(callback, None, self).__call__
f = CallWrapper(callback, None, self._root).__call__
cbname = repr(id(f))
try:
callback = callback.__func__
@ -295,14 +295,19 @@ class Variable:
CBNAME is the name of the callback returned from trace_variable or trace.
"""
self._tk.call("trace", "vdelete", self._name, mode, cbname)
self._tk.deletecommand(cbname)
try:
self._tclCommands.remove(cbname)
except ValueError:
pass
cbname = self._tk.splitlist(cbname)[0]
for m, ca in self.trace_vinfo():
if self._tk.splitlist(ca)[0] == cbname:
break
else:
self._tk.deletecommand(cbname)
try:
self._tclCommands.remove(cbname)
except ValueError:
pass
def trace_vinfo(self):
"""Return all trace callback information."""
return [self._tk.split(x) for x in self._tk.splitlist(
return [self._tk.splitlist(x) for x in self._tk.splitlist(
self._tk.call("trace", "vinfo", self._name))]
def __eq__(self, other):
"""Comparison for equality (==).