light9 Changeset - 139d6ed2fbaa

Changeset - 139d6ed2fbaa

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drewp - 22 years ago 2002-07-13 04:04:33

partway through the fancy trace-disabling feature

1 file changed with 24 insertions and 10 deletions:

light8/uihelpers.py

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light8/uihelpers.py

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@@ @@ -159,20 +159,34 @@ class FancyDoubleVar(DoubleVar): @@
         DoubleVar.__init__(self,master)
         self.callbacklist = {}
     def trace_variable(self,mode,callback):
         """Define a trace callback for the variable.
         # we build a list of the trace callbacks (the py functrions and the tcl functionnames)
         id=DoubleVar.trace_variable(self,mode,callback)
         self.callbacklist[id]= [mode,callback]
         MODE is one of "r", "w", "u" for read, write, undefine.
         CALLBACK must be a function which is called when
         the variable is read, written or undefined.
         return id
         Return the name of the callback.
         """
         cbname = self._master._register(callback)
         self._tk.call("trace", "variable", self._name, mode, cbname)
         # we build a list of the trace callbacks (the py functrions and the tcl functionnames)
         self.callbacklist[cbname]= mode
         print "added trace:",callback,cbname
         return cbname
     trace=trace_variable
     def disable_traces(self):
         for k,v in self.callbacklist.items():
             self.trace_vdelete(v[0],k)
         for cb,mode in self.callbacklist.items():
 #            DoubleVar.trace_vdelete(self,v[0],k)
             self._tk.call("trace", "vdelete", self._name, mode,cb)
             # but no master delete!
     def recreate_traces(self):
         for k,v in self.callbacklist.items():
             self.trace_variable(v[0],v[1])
         for cb,mode in self.callbacklist.items():
 #            self.trace_variable(v[0],v[1])
             self._tk.call("trace", "variable", self._name, mode,cb)
 if __name__=='__main__':
     root=Tk()

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