Emits the current column changed signal.
        
        :param      column | <orb.Column> || None

def emitSchemaColumnChanged(self, column):
        """
        Emits the current column changed signal.
        
        :param      column | <orb.Column> || None
        """
        edit = self.lineEdit()
        if edit:
            edit.setText(self.navigator().currentSchemaPath())
            
        if not self.signalsBlocked():
            self.schemaColumnChanged.emit(column)