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      1 /*
      2  * Copyright (C) 2010 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 LocalFileSystem_h
     32 #define LocalFileSystem_h
     33 
     34 #include "core/page/Page.h"
     35 #include "modules/filesystem/FileSystemType.h"
     36 #include "wtf/Forward.h"
     37 
     38 namespace WebCore {
     39 
     40 class AsyncFileSystemCallbacks;
     41 class FileSystemClient;
     42 class ScriptExecutionContext;
     43 
     44 // Base class of LocalFileSystem and WorkerLocalFileSystem.
     45 class LocalFileSystemBase {
     46     WTF_MAKE_NONCOPYABLE(LocalFileSystemBase);
     47 public:
     48     virtual ~LocalFileSystemBase();
     49 
     50     // Does not create the new file system if it doesn't exist, just reads it if available.
     51     void readFileSystem(ScriptExecutionContext*, FileSystemType, PassOwnPtr<AsyncFileSystemCallbacks>, FileSystemSynchronousType = AsynchronousFileSystem);
     52 
     53     void requestFileSystem(ScriptExecutionContext*, FileSystemType, long long size, PassOwnPtr<AsyncFileSystemCallbacks>, FileSystemSynchronousType = AsynchronousFileSystem);
     54 
     55     void deleteFileSystem(ScriptExecutionContext*, FileSystemType, PassOwnPtr<AsyncFileSystemCallbacks>);
     56 
     57     FileSystemClient* client() { return m_client.get(); }
     58 
     59 protected:
     60     explicit LocalFileSystemBase(PassOwnPtr<FileSystemClient>);
     61 
     62     OwnPtr<FileSystemClient> m_client;
     63 };
     64 
     65 class LocalFileSystem : public LocalFileSystemBase, public Supplement<Page> {
     66 public:
     67     static PassOwnPtr<LocalFileSystem> create(PassOwnPtr<FileSystemClient>);
     68     static const char* supplementName();
     69     static LocalFileSystem* from(ScriptExecutionContext*);
     70     virtual ~LocalFileSystem();
     71 
     72 private:
     73     explicit LocalFileSystem(PassOwnPtr<FileSystemClient>);
     74 };
     75 
     76 
     77 } // namespace WebCore
     78 
     79 #endif // LocalFileSystem_h
     80