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      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 LocalStorageTask_h
     27 #define LocalStorageTask_h
     28 
     29 #if ENABLE(DOM_STORAGE)
     30 
     31 #include "PlatformString.h"
     32 #include <wtf/PassOwnPtr.h>
     33 #include <wtf/Threading.h>
     34 
     35 namespace WebCore {
     36 
     37     class StorageAreaSync;
     38     class LocalStorageThread;
     39 
     40     // FIXME: Rename this class to StorageTask
     41     class LocalStorageTask {
     42         WTF_MAKE_NONCOPYABLE(LocalStorageTask); WTF_MAKE_FAST_ALLOCATED;
     43     public:
     44         enum Type { AreaImport, AreaSync, DeleteEmptyDatabase, SetOriginDetails, ImportOrigins, DeleteAllOrigins, DeleteOrigin, TerminateThread };
     45 
     46         ~LocalStorageTask();
     47 
     48         static PassOwnPtr<LocalStorageTask> createImport(StorageAreaSync* area) { return adoptPtr(new LocalStorageTask(AreaImport, area)); }
     49         static PassOwnPtr<LocalStorageTask> createSync(StorageAreaSync* area) { return adoptPtr(new LocalStorageTask(AreaSync, area)); }
     50         static PassOwnPtr<LocalStorageTask> createDeleteEmptyDatabase(StorageAreaSync* area) { return adoptPtr(new LocalStorageTask(DeleteEmptyDatabase, area)); }
     51         static PassOwnPtr<LocalStorageTask> createOriginIdentifiersImport() { return adoptPtr(new LocalStorageTask(ImportOrigins)); }
     52         static PassOwnPtr<LocalStorageTask> createSetOriginDetails(const String& originIdentifier, const String& databaseFilename) { return adoptPtr(new LocalStorageTask(SetOriginDetails, originIdentifier, databaseFilename)); }
     53         static PassOwnPtr<LocalStorageTask> createDeleteOrigin(const String& originIdentifier) { return adoptPtr(new LocalStorageTask(DeleteOrigin, originIdentifier)); }
     54         static PassOwnPtr<LocalStorageTask> createDeleteAllOrigins() { return adoptPtr(new LocalStorageTask(DeleteAllOrigins)); }
     55         static PassOwnPtr<LocalStorageTask> createTerminate(LocalStorageThread* thread) { return adoptPtr(new LocalStorageTask(TerminateThread, thread)); }
     56 
     57         void performTask();
     58 
     59     private:
     60         LocalStorageTask(Type, StorageAreaSync*);
     61         LocalStorageTask(Type, LocalStorageThread*);
     62         LocalStorageTask(Type, const String& originIdentifier);
     63         LocalStorageTask(Type, const String& originIdentifier, const String& databaseFilename);
     64         LocalStorageTask(Type);
     65 
     66         Type m_type;
     67         StorageAreaSync* m_area;
     68         LocalStorageThread* m_thread;
     69         String m_originIdentifier;
     70         String m_databaseFilename;
     71     };
     72 
     73 } // namespace WebCore
     74 
     75 #endif // ENABLE(DOM_STORAGE)
     76 
     77 #endif // LocalStorageTask_h
     78