Replacing Indexed DB Chromium IPC with Mojo

content/child/indexed_db/webidbcursor_impl.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CONTENT_CHILD_INDEXED_DB_WEBIDBCURSOR_IMPL_H_
-#define CONTENT_CHILD_INDEXED_DB_WEBIDBCURSOR_IMPL_H_
-
-#include <stdint.h>
-
-#include <deque>
-#include <vector>
-
-#include "base/compiler_specific.h"
-#include "base/gtest_prod_util.h"
-#include "base/memory/ref_counted.h"
-#include "content/common/content_export.h"
-#include "content/common/indexed_db/indexed_db_key.h"
-#include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBCallbacks.h"
-#include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBCursor.h"
-#include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBKey.h"
-#include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBValue.h"
-
-namespace content {
-class ThreadSafeSender;
-
-class CONTENT_EXPORT WebIDBCursorImpl
-    : NON_EXPORTED_BASE(public blink::WebIDBCursor) {
- public:
-  WebIDBCursorImpl(int32_t ipc_cursor_id,
-                   int64_t transaction_id,
-                   ThreadSafeSender* thread_safe_sender);
-  ~WebIDBCursorImpl() override;
-
-  void advance(unsigned long count, blink::WebIDBCallbacks* callback) override;
-  virtual void continueFunction(const blink::WebIDBKey& key,
-                                blink::WebIDBCallbacks* callback);
-  void continueFunction(const blink::WebIDBKey& key,
-                        const blink::WebIDBKey& primary_key,
-                        blink::WebIDBCallbacks* callback) override;
-  void postSuccessHandlerCallback() override;
-
-  void SetPrefetchData(const std::vector<IndexedDBKey>& keys,
-                       const std::vector<IndexedDBKey>& primary_keys,
-                       const std::vector<blink::WebIDBValue>& values);
-
-  void CachedAdvance(unsigned long count, blink::WebIDBCallbacks* callbacks);
-  void CachedContinue(blink::WebIDBCallbacks* callbacks);
-
-  // This method is virtual so it can be overridden in unit tests.
-  virtual void ResetPrefetchCache();
-
-  int64_t transaction_id() const { return transaction_id_; }
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorReset);
-  FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorTransactionId);
-  FRIEND_TEST_ALL_PREFIXES(WebIDBCursorImplTest, AdvancePrefetchTest);
-  FRIEND_TEST_ALL_PREFIXES(WebIDBCursorImplTest, PrefetchReset);
-  FRIEND_TEST_ALL_PREFIXES(WebIDBCursorImplTest, PrefetchTest);
-
-  enum { kInvalidCursorId = -1 };
-  enum { kPrefetchContinueThreshold = 2 };
-  enum { kMinPrefetchAmount = 5 };
-  enum { kMaxPrefetchAmount = 100 };
-
-  int32_t ipc_cursor_id_;
-  int64_t transaction_id_;
-
-  // Prefetch cache.
-  std::deque<IndexedDBKey> prefetch_keys_;
-  std::deque<IndexedDBKey> prefetch_primary_keys_;
-  std::deque<blink::WebIDBValue> prefetch_values_;
-
-  // Number of continue calls that would qualify for a pre-fetch.
-  int continue_count_;
-
-  // Number of items used from the last prefetch.
-  int used_prefetches_;
-
-  // Number of onsuccess handlers we are waiting for.
-  int pending_onsuccess_callbacks_;
-
-  // Number of items to request in next prefetch.
-  int prefetch_amount_;
-
-  scoped_refptr<ThreadSafeSender> thread_safe_sender_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_CHILD_INDEXED_DB_WEBIDBCURSOR_IMPL_H_