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 #include "core/storage/StorageArea.h" 30 31 namespace blink { 32 class WebStorageArea; 33 class WebStorageNamespace; 34 } 35 36 namespace WebCore { 37 38 class ExceptionState; 39 class Frame; 40 class KURL; 41 class Page; 42 class SecurityOrigin; 43 class Storage; 44 45 class StorageAreaProxy : public StorageArea { 46 public: 47 StorageAreaProxy(PassOwnPtr<blink::WebStorageArea>, StorageType); 48 virtual ~StorageAreaProxy(); 49 50 // The HTML5 DOM Storage API 51 virtual unsigned length(ExceptionState&, Frame* sourceFrame); 52 virtual String key(unsigned index, ExceptionState&, Frame* sourceFrame); 53 virtual String getItem(const String& key, ExceptionState&, Frame* sourceFrame); 54 virtual void setItem(const String& key, const String& value, ExceptionState&, Frame* sourceFrame); 55 virtual void removeItem(const String& key, ExceptionState&, Frame* sourceFrame); 56 virtual void clear(ExceptionState&, Frame* sourceFrame); 57 virtual bool contains(const String& key, ExceptionState&, Frame* sourceFrame); 58 59 virtual bool canAccessStorage(Frame*); 60 61 virtual size_t memoryBytesUsedByCache(); 62 63 static void dispatchLocalStorageEvent( 64 const String& key, const String& oldValue, const String& newValue, 65 SecurityOrigin*, const KURL& pageURL, blink::WebStorageArea* sourceAreaInstance, bool originatedInProcess); 66 static void dispatchSessionStorageEvent( 67 const String& key, const String& oldValue, const String& newValue, 68 SecurityOrigin*, const KURL& pageURL, const blink::WebStorageNamespace&, 69 blink::WebStorageArea* sourceAreaInstance, bool originatedInProcess); 70 71 private: 72 static bool isEventSource(Storage*, blink::WebStorageArea* sourceAreaInstance); 73 74 OwnPtr<blink::WebStorageArea> m_storageArea; 75 StorageType m_storageType; 76 mutable bool m_canAccessStorageCachedResult; 77 mutable Frame* m_canAccessStorageCachedFrame; 78 }; 79 80 } // namespace WebCore 81 82 #endif // StorageAreaProxy_h 83