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1 /*
2  * Copyright (C) 2009 Google 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 GOOGLE 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 GOOGLE 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 #ifndef StorageAreaProxy_h
27 #define StorageAreaProxy_h
28 
29 #if ENABLE(DOM_STORAGE)
30 
31 #include "StorageArea.h"
32 
33 namespace WebKit { class WebStorageArea; }
34 
35 namespace WebCore {
36 
37 class Frame;
38 class SecurityOrigin;
39 
40 class StorageAreaProxy : public StorageArea {
41 public:
42     StorageAreaProxy(WebKit::WebStorageArea*, StorageType);
43     virtual ~StorageAreaProxy();
44 
45     // The HTML5 DOM Storage API
46     virtual unsigned length() const;
47     virtual String key(unsigned index) const;
48     virtual String getItem(const String& key) const;
49     virtual String setItem(const String& key, const String& value, ExceptionCode& ec, Frame* sourceFrame);
50     virtual String removeItem(const String& key, Frame* sourceFrame);
51     virtual bool clear(Frame* sourceFrame);
52     virtual bool contains(const String& key) const;
53 
54 private:
55     void storageEvent(const String& key, const String& oldValue, const String& newValue, StorageType, SecurityOrigin*, Frame* sourceFrame);
56 
57     OwnPtr<WebKit::WebStorageArea> m_storageArea;
58     StorageType m_storageType;
59 };
60 
61 } // namespace WebCore
62 
63 #endif // ENABLE(DOM_STORAGE)
64 
65 #endif // StorageAreaProxy_h
66