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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_READING_LIST_IOS_READING_LIST_STORE_DELEGATE_H_ | |
6 #define COMPONENTS_READING_LIST_IOS_READING_LIST_STORE_DELEGATE_H_ | |
7 | |
8 #include <map> | |
9 | |
10 #include "base/macros.h" | |
11 | |
12 class ReadingListEntry; | |
13 | |
14 // The delegate to handle callbacks from the ReadingListStore. | |
15 class ReadingListStoreDelegate { | |
16 public: | |
17 using ReadingListEntries = std::map<GURL, ReadingListEntry>; | |
18 // These three methods handle callbacks from a ReadingListStore. | |
19 // This method is called when the local store is loaded. |entries| contains | |
20 // the ReadingListEntry present on the device before sync starts. | |
21 virtual void StoreLoaded(std::unique_ptr<ReadingListEntries> entries) = 0; | |
22 // Handle sync events. | |
23 // Called to add a new entry to the model. | |
24 // |entry| must not already exist in the model. | |
25 virtual void SyncAddEntry(std::unique_ptr<ReadingListEntry> entry) = 0; | |
26 | |
27 // Called to merge a sync entry with a local entry in the model. | |
28 // A local entry with the same URL must exist in the local store and have an | |
29 // older UpdateTime. | |
30 // Return a pointer to the merged entry. | |
31 virtual ReadingListEntry* SyncMergeEntry( | |
32 std::unique_ptr<ReadingListEntry> entry) = 0; | |
33 | |
34 // Called to remove an entry to the model. | |
35 virtual void SyncRemoveEntry(const GURL& url) = 0; | |
36 | |
37 protected: | |
38 ReadingListStoreDelegate() {} | |
39 virtual ~ReadingListStoreDelegate() {} | |
40 | |
41 private: | |
42 DISALLOW_COPY_AND_ASSIGN(ReadingListStoreDelegate); | |
43 }; | |
44 | |
45 #endif // COMPONENTS_READING_LIST_IOS_READING_LIST_STORE_DELEGATE_H_ | |
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