Home | History | Annotate | Download | only in storage
      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 #ifndef StorageNamespaceImpl_h
     27 #define StorageNamespaceImpl_h
     28 
     29 #if ENABLE(DOM_STORAGE)
     30 
     31 #include "PlatformString.h"
     32 #include "SecurityOriginHash.h"
     33 #include "StorageArea.h"
     34 #include "StorageNamespace.h"
     35 
     36 #include <wtf/HashMap.h>
     37 #include <wtf/RefPtr.h>
     38 
     39 namespace WebCore {
     40 #ifdef ANDROID
     41     class Page;
     42 #endif
     43     class StorageAreaImpl;
     44 
     45     class StorageNamespaceImpl : public StorageNamespace {
     46     public:
     47         static PassRefPtr<StorageNamespace> localStorageNamespace(const String& path, unsigned quota);
     48         static PassRefPtr<StorageNamespace> sessionStorageNamespace(unsigned quota);
     49 
     50         virtual ~StorageNamespaceImpl();
     51         virtual PassRefPtr<StorageArea> storageArea(PassRefPtr<SecurityOrigin>);
     52         virtual PassRefPtr<StorageNamespace> copy();
     53         virtual void close();
     54         virtual void unlock();
     55 
     56         // Not removing the origin's StorageArea from m_storageAreaMap because
     57         // we're just deleting the underlying db file. If an item is added immediately
     58         // after file deletion, we want the same StorageArea to eventually trigger
     59         // a sync and for StorageAreaSync to recreate the backing db file.
     60         virtual void clearOriginForDeletion(SecurityOrigin*);
     61         virtual void clearAllOriginsForDeletion();
     62         virtual void sync();
     63 
     64 #ifdef ANDROID
     65         virtual void clear(Page*);
     66 #endif
     67 
     68     private:
     69         StorageNamespaceImpl(StorageType, const String& path, unsigned quota);
     70 
     71         typedef HashMap<RefPtr<SecurityOrigin>, RefPtr<StorageAreaImpl>, SecurityOriginHash> StorageAreaMap;
     72         StorageAreaMap m_storageAreaMap;
     73 
     74         StorageType m_storageType;
     75 
     76         // Only used if m_storageType == LocalStorage and the path was not "" in our constructor.
     77         String m_path;
     78         RefPtr<StorageSyncManager> m_syncManager;
     79 
     80         unsigned m_quota;  // The default quota for each new storage area.
     81         bool m_isShutdown;
     82     };
     83 
     84 } // namespace WebCore
     85 
     86 #endif // ENABLE(DOM_STORAGE)
     87 
     88 #endif // StorageNamespaceImpl_h
     89