def update(self, doc, process=None):
        if process is None:
            pk = 'id'
            id = doc.id
            doc.synced = False
            set = doc
        elif process == UPDATE_PROCESS:
            if self.db.docs.find({'sid': doc.sid}).count() == 0:
                return self.insert(doc, synced=True)
            pk = 'sid'
            id = doc.sid
            doc.synced = not doc.merged() # must be commited if was merged
            doc.merged(False)
            set = {'tid': doc.tid, 'data': doc.data, 'user': doc.user,
                   'public': doc.public, 'synced': doc.synced}
        elif process == COMMIT_PROCESS:
            pk = 'id'
            id = doc.id
            doc.synced = True
            set = {'sid': doc.sid, 'tid': doc.tid, 'synced': doc.synced}
        else:
            raise DatabaseException('Incorrect update process')

        try:
            rs = self.db.docs.update({pk: id}, {'$set': set}, safe=True)
            assert rs['n'] == 1
        except Exception as e:
            raise DatabaseException(e)
        return doc
def update_message_data_string(self):
        fuz_start = self.current_label_start
        fuz_end = self.current_label_end
        num_proto_bits = 10
        num_fuz_bits = 16

        proto_start = fuz_start - num_proto_bits
        preambel = "... "
        if proto_start <= 0:
            proto_start = 0
            preambel = ""

        proto_end = fuz_end + num_proto_bits
        postambel = " ..."
        if proto_end >= len(self.message_data) - 1:
            proto_end = len(self.message_data) - 1
            postambel = ""

        fuzamble = ""
        if fuz_end - fuz_start > num_fuz_bits:
            fuz_end = fuz_start + num_fuz_bits
            fuzamble = "..."

        self.ui.lPreBits.setText(preambel + self.message_data[proto_start:self.current_label_start])
        self.ui.lFuzzedBits.setText(self.message_data[fuz_start:fuz_end] + fuzamble)
        self.ui.lPostBits.setText(self.message_data[self.current_label_end:proto_end] + postambel)
        self.set_add_spinboxes_maximum_on_label_change()