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Fix problem detected by Greg McFarlane -- callbacks passed to 

bind_class() and bind_all() are destroyed when the widget to which
they were passed is destroyed.
This commit is contained in:
Guido van Rossum 1997-12-11 02:03:55 +00:00
parent d1f4984a9b
commit 5ac00ac140
1 changed files with 16 additions and 10 deletions
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26
Lib/lib-tk/Tkinter.py
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@ -121,6 +121,7 @@ def getboolean(s):
# Methods defined on both toplevel and interior widgets
class Misc:
# XXX font command?
_tclCommands = None
def destroy(self):
if self._tclCommands is not None:
@ -131,8 +132,10 @@ def destroy(self):
def deletecommand(self, name):
#print '- Tkinter: deleted command', name
self.tk.deletecommand(name)
index = self._tclCommands.index(name)
del self._tclCommands[index]
try:
self._tclCommands.remove(name)
except ValueError:
pass
def tk_strictMotif(self, boolean=None):
return self.tk.getboolean(self.tk.call(
'set', 'tk_strictMotif', boolean))
@ -435,12 +438,13 @@ def bindtags(self, tagList=None):
self.tk.call('bindtags', self._w))
else:
self.tk.call('bindtags', self._w, tagList)
def _bind(self, what, sequence, func, add):
def _bind(self, what, sequence, func, add, needcleanup=1):
if func:
cmd = ("%sset _tkinter_break [%s %s]\n"
'if {"$_tkinter_break" == "break"} break\n') \
% (add and '+' or '',
self._register(func, self._substitute),
self._register(func, self._substitute,
needcleanup),
_string.join(self._subst_format))
apply(self.tk.call, what + (sequence, cmd))
elif func == '':
@ -452,11 +456,11 @@ def bind(self, sequence=None, func=None, add=None):
def unbind(self, sequence):
self.tk.call('bind', self._w, sequence, '')
def bind_all(self, sequence=None, func=None, add=None):
return self._bind(('bind', 'all'), sequence, func, add)
return self._bind(('bind', 'all'), sequence, func, add, 0)
def unbind_all(self, sequence):
self.tk.call('bind', 'all' , sequence, '')
def bind_class(self, className, sequence=None, func=None, add=None):
return self._bind(('bind', className), sequence, func, add)
return self._bind(('bind', className), sequence, func, add, 0)
def unbind_class(self, className, sequence):
self.tk.call('bind', className , sequence, '')
def mainloop(self, n=0):
@ -506,7 +510,7 @@ def _nametowidget(self, name):
w = w.children[name]
name = tail
return w
def _register(self, func, subst=None):
def _register(self, func, subst=None, needcleanup=1):
f = CallWrapper(func, subst, self).__call__
name = `id(f)`
try:
@ -518,9 +522,10 @@ def _register(self, func, subst=None):
except AttributeError:
pass
self.tk.createcommand(name, f)
if self._tclCommands is None:
self._tclCommands = []
self._tclCommands.append(name)
if needcleanup:
if self._tclCommands is None:
self._tclCommands = []
self._tclCommands.append(name)
#print '+ Tkinter created command', name
return name
register = _register
@ -1737,6 +1742,7 @@ def cget(self, option):
# XXX config
def __getitem__(self, key):
return self.tk.call(self.name, 'cget', '-' + key)
# XXX copy -from, -to, ...?
def copy(self):
destImage = PhotoImage()
self.tk.call(destImage, 'copy', self.name)