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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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef WebStorageAreaImpl_h
     32 #define WebStorageAreaImpl_h
     33 
     34 #if ENABLE(DOM_STORAGE)
     35 
     36 #include "StorageAreaImpl.h"
     37 #include "WebStorageArea.h"
     38 
     39 namespace WebKit {
     40 
     41 class WebStorageAreaImpl : public WebStorageArea {
     42 public:
     43     WebStorageAreaImpl(PassRefPtr<WebCore::StorageArea> storageArea);
     44     virtual ~WebStorageAreaImpl();
     45     virtual unsigned length();
     46     virtual WebString key(unsigned index);
     47     virtual WebString getItem(const WebString& key);
     48     virtual void setItem(const WebString& key, const WebString& value, const WebURL& url, Result& result, WebString& oldValue, WebFrame*);
     49     virtual void removeItem(const WebString& key, const WebURL& url, WebString& oldValue);
     50     virtual void clear(const WebURL& url, bool& somethingCleared);
     51 
     52     // For storage events in single-process mode and test shell.
     53     static const WebURL* currentStorageEventURL() { return storageEventURL; }
     54 
     55 private:
     56     class ScopedStorageEventURL {
     57     public:
     58         ScopedStorageEventURL(const WebURL& url)
     59         {
     60             // FIXME: Once storage events are fired async in WebKit (as they should
     61             //        be) this can be ASSERTed to be 0 rather than saved.
     62             m_existingStorageEventURL = storageEventURL;
     63             storageEventURL = &url;
     64         }
     65         ~ScopedStorageEventURL()
     66         {
     67             storageEventURL = m_existingStorageEventURL;
     68         }
     69 
     70     private:
     71         const WebURL* m_existingStorageEventURL;
     72     };
     73 
     74     static const WebURL* storageEventURL;
     75 
     76     RefPtr<WebCore::StorageArea> m_storageArea;
     77 };
     78 
     79 } // namespace WebKit
     80 
     81 #endif // ENABLE(DOM_STORAGE)
     82 
     83 #endif // WebStorageAreaImpl_h
     84