示例#1
0
    def do_set_expr(self, expr):
        # find dependencies and error-check expression
        #try:
        data = asarray(self.worksheet.evaluate(expr))
#        except Exception, ar:
       # x.    print >>sys.stderr, '*****************', ar
       #     raise UserWarning, False
        self.depdict = self.analyze_expression(expr)
        newdep = set(self.depdict.values())

        # set dependencies
        for column in newdep - self.dependencies:
            print >>sys.stderr, "add", column.name
            dispatcher.connect(self.calculate, signal='data-changed', sender=column)
            dispatcher.connect(self.on_dep_rename, signal='rename', sender=column)
        for column in self.dependencies - newdep:
            print >>sys.stderr, "rem", column.name
            dispatcher.disconnect(self.calculate, signal='data-changed', sender=column)
            dispatcher.disconnect(self.on_dep_rename, signal='rename', sender=column)
        newdepws = set(d.worksheet for d in newdep)
        depws = set(d.worksheet for d in self.dependencies)
        for worksheet in newdepws - depws:
            dispatcher.connect(self.on_dep_ws_rename, signal='fullname-changed', sender=worksheet)
            dispatcher.connect(self.on_dep_ws_rename, signal='rename', sender=worksheet)
        for worksheet in depws - newdepws:
            dispatcher.disconnect(self.on_dep_ws_rename, signal='fullname-changed', sender=worksheet)
            dispatcher.disconnect(self.on_dep_ws_rename, signal='rename', sender=worksheet)
        self.dependencies = newdep

        if expr != '':
            # set data without triggering an action
            self.data[:] = data
        dispatcher.send(sender=self, signal='data-changed')
        dispatcher.send(sender=self.worksheet, signal='data-changed')
        return True
示例#2
0
 def receiveDrop(self, sender, signal, model):
     if sender is self:
         return
     for observer in self.observers:
         dispatcher.disconnect(observer.receivePropertyChange, signal=model)
     self.models.remove(model)
示例#3
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 def unregisterObserver(self, observer):
     dispatcher.disconnect(observer.receiveDropModel, signal=Drop)
     dispatcher.disconnect(observer.receiveNewModel, signal=New)
     for model in self.models:
         dispatcher.disconnect(observer.receivePropertyChange, signal=model)
     self.observers.remove(observer)
示例#4
0
 def receiveDrop(self, sender, signal, model):
     if sender is self:
         return
     for observer in self.observers:
         dispatcher.disconnect(observer.receivePropertyChange, signal=model)
     self.models.remove(model)
示例#5
0
 def unregisterObserver(self, observer):
     dispatcher.disconnect(observer.receiveDropModel, signal=Drop)
     dispatcher.disconnect(observer.receiveNewModel, signal=New)
     for model in self.models:
         dispatcher.disconnect(observer.receivePropertyChange, signal=model)
     self.observers.remove(observer)