AsyncFileSystemCallbacks.h   [plain text]

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#ifndef AsyncFileSystemCallbacks_h
#define AsyncFileSystemCallbacks_h

#if ENABLE(FILE_SYSTEM)

#include "AsyncFileSystem.h"
#include "AsyncFileWriter.h"
#include "BlobData.h"
#include "FileMetadata.h"
#include <wtf/text/WTFString.h>

namespace WebCore {

class AsyncFileSystemCallbacks {
    WTF_MAKE_NONCOPYABLE(AsyncFileSystemCallbacks);
public:
    AsyncFileSystemCallbacks() { }

    // Called when a requested operation is completed successfully.
    virtual void didSucceed() { ASSERT_NOT_REACHED(); }

    // Called when a requested file system is opened.
    virtual void didOpenFileSystem(const String& /* name */, const KURL& /* rootURL */, PassOwnPtr<AsyncFileSystem>) { ASSERT_NOT_REACHED(); }

    // Called when a file metadata is read successfully.
    virtual void didReadMetadata(const FileMetadata&) { ASSERT_NOT_REACHED(); }

    // Called when a snapshot file is created successfully.
    virtual void didCreateSnapshotFile(const FileMetadata&, PassRefPtr<BlobDataHandle> /* snapshot */) { ASSERT_NOT_REACHED(); }

    // Called when a directory entry is read.
    virtual void didReadDirectoryEntry(const String& /* name */, bool /* isDirectory */) { ASSERT_NOT_REACHED(); }

    // Called after a chunk of directory entries have been read (i.e. indicates it's good time to call back to the application). If hasMore is true there can be more chunks.
    virtual void didReadDirectoryEntries(bool /* hasMore */) { ASSERT_NOT_REACHED(); }

    // Called when an AsyncFileWrter has been created successfully.
    virtual void didCreateFileWriter(PassOwnPtr<AsyncFileWriter>, long long /* length */) { ASSERT_NOT_REACHED(); }

    // Called when there was an error.
    virtual void didFail(int code) = 0;

    virtual ~AsyncFileSystemCallbacks() { }
};

} // namespace

#endif // ENABLE(FILE_SYSTEM)

#endif // AsyncFileSystemCallbacks_h