| // Copyright 2015 The Vanadium Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| // Constructs a slide key. | |
| String getSlideKey(String deckId, int slideIndex) { | |
| return '$deckId/slides/$slideIndex'; | |
| } | |
| // Constructs prefix key for a deck. | |
| String getDeckKeyPrefix(String deckKey) { | |
| return deckKey + '/'; | |
| } | |
| // Returns true if a key is for a deck. | |
| bool isDeckKey(String key) { | |
| return !key.contains('/'); | |
| } |