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 CONTENT_BROWSER_INDEXED_DB_CURSOR_IMPL_H_ 6 #define CONTENT_BROWSER_INDEXED_DB_CURSOR_IMPL_H_ 7 8 #include <memory> 9 10 #include "base/memory/ref_counted.h" 11 #include "base/sequence_checker.h" 12 #include "third_party/blink/public/common/indexeddb/indexeddb_key.h" 13 #include "third_party/blink/public/mojom/indexeddb/indexeddb.mojom.h" 14 #include "url/origin.h" 15 16 namespace base { 17 class SequencedTaskRunner; 18 } 19 20 namespace content { 21 22 class IndexedDBCursor; 23 class IndexedDBDispatcherHost; 24 25 class CursorImpl : public blink::mojom::IDBCursor { 26 public: 27 CursorImpl(std::unique_ptr<IndexedDBCursor> cursor, 28 const url::Origin& origin, 29 IndexedDBDispatcherHost* dispatcher_host, 30 scoped_refptr<base::SequencedTaskRunner> idb_runner); 31 ~CursorImpl() override; 32 33 // blink::mojom::IDBCursor implementation 34 void Advance(uint32_t count, 35 blink::mojom::IDBCursor::AdvanceCallback callback) override; 36 void CursorContinue( 37 const blink::IndexedDBKey& key, 38 const blink::IndexedDBKey& primary_key, 39 blink::mojom::IDBCursor::CursorContinueCallback callback) override; 40 void Prefetch(int32_t count, 41 blink::mojom::IDBCursor::PrefetchCallback callback) override; 42 void PrefetchReset(int32_t used_prefetches, 43 int32_t unused_prefetches) override; 44 45 void OnRemoveBinding(base::OnceClosure remove_binding_cb); 46 47 private: 48 // This raw pointer is safe because all CursorImpl instances are owned by an 49 // IndexedDBDispatcherHost. 50 IndexedDBDispatcherHost* dispatcher_host_; 51 const url::Origin origin_; 52 scoped_refptr<base::SequencedTaskRunner> idb_runner_; 53 std::unique_ptr<IndexedDBCursor> cursor_; 54 55 SEQUENCE_CHECKER(sequence_checker_); 56 57 DISALLOW_COPY_AND_ASSIGN(CursorImpl); 58 }; 59 60 } // namespace content 61 62 #endif // CONTENT_BROWSER_INDEXED_DB_CURSOR_IMPL_H_ 63