Source/web/WebFileSystemCallbacksImpl.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef WebFileSystemCallbacksImpl_h
#define WebFileSystemCallbacksImpl_h

#include "modules/filesystem/FileSystemType.h"
#include "public/platform/WebFileSystem.h"
#include "public/platform/WebFileSystemCallbacks.h"
#include "public/platform/WebVector.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"

namespace WebCore {
class AsyncFileSystemCallbacks;
class BlobDataHandle;
}

namespace WebKit {

struct WebFileInfo;
struct WebFileSystemEntry;
class WebString;
class WebURL;

class WebFileSystemCallbacksImpl : public WebFileSystemCallbacks {
public:
    WebFileSystemCallbacksImpl(PassOwnPtr<WebCore::AsyncFileSystemCallbacks>);
    virtual ~WebFileSystemCallbacksImpl();

    virtual void didSucceed();
    virtual void didReadMetadata(const WebFileInfo&);
    virtual void didCreateSnapshotFile(const WebFileInfo&);
    virtual void didReadDirectory(const WebVector<WebFileSystemEntry>& entries, bool hasMore);
    virtual void didOpenFileSystem(const WebString& name, const WebURL& rootURL);
    virtual void didCreateFileWriter(WebFileWriter*, long long length);
    virtual void didFail(WebFileError error);
    virtual bool shouldBlockUntilCompletion() const;

    // This internal overload is used by WorkerFileSystemCallbacksBridge to deliver a blob data handle
    // created on the main thread to an AsyncFileSystemCallback on a background worker thread. The other
    // virtual method is invoked by the embedder.
    void didCreateSnapshotFile(const WebFileInfo&, PassRefPtr<WebCore::BlobDataHandle> snapshot);

private:
    OwnPtr<WebCore::AsyncFileSystemCallbacks> m_callbacks;
};

} // namespace WebKit

#endif // WebFileSystemCallbacksImpl_h