1/*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include <wtf/Forward.h>
29#include <wtf/RefCounted.h>
30#include <wtf/text/WTFString.h>
31
32namespace WebCore {
33
34class Frame;
35class SecurityOrigin;
36class StorageSyncManager;
37
38enum class StorageType;
39
40struct SecurityOriginData;
41
42class StorageArea : public RefCounted<StorageArea> {
43public:
44 virtual ~StorageArea() = default;
45
46 virtual unsigned length() = 0;
47 virtual String key(unsigned index) = 0;
48 virtual String item(const String& key) = 0;
49 virtual void setItem(Frame* sourceFrame, const String& key, const String& value, bool& quotaException) = 0;
50 virtual void removeItem(Frame* sourceFrame, const String& key) = 0;
51 virtual void clear(Frame* sourceFrame) = 0;
52 virtual bool contains(const String& key) = 0;
53
54 virtual StorageType storageType() const = 0;
55
56 virtual size_t memoryBytesUsedByCache() = 0;
57
58 virtual void incrementAccessCount() { }
59 virtual void decrementAccessCount() { }
60 virtual void closeDatabaseIfIdle() { }
61
62 virtual const SecurityOriginData& securityOrigin() const = 0;
63};
64
65} // namespace WebCore
66