Blob.h   [plain text]


/*
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#ifndef Blob_h
#define Blob_h

#include "BlobData.h"
#include "KURL.h"
#include "ScriptWrappable.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>

namespace WebCore {

class ScriptExecutionContext;

class Blob : public ScriptWrappable, public RefCounted<Blob> {
public:
    static PassRefPtr<Blob> create()
    {
        return adoptRef(new Blob);
    }

    static PassRefPtr<Blob> create(PassOwnPtr<BlobData> blobData, long long size)
    {
        return adoptRef(new Blob(blobData, size));
    }

    // For deserialization.
    static PassRefPtr<Blob> create(const KURL& srcURL, const String& type, long long size)
    {
        ASSERT(Blob::isNormalizedContentType(type));
        return adoptRef(new Blob(srcURL, type, size));
    }

    virtual ~Blob();

    const KURL& url() const { return m_internalURL; }
    const String& type() const { return m_type; }

    virtual unsigned long long size() const { return static_cast<unsigned long long>(m_size); }
    virtual bool isFile() const { return false; }

    // The checks described in the File API spec.
    static bool isValidContentType(const String&);
    // The normalization procedure described in the File API spec.
    static String normalizedContentType(const String&);
    // Intended for use in ASSERT statements.
    static bool isNormalizedContentType(const String&);
    static bool isNormalizedContentType(const CString&);

#if ENABLE(BLOB)
    PassRefPtr<Blob> slice(long long start = 0, long long end = std::numeric_limits<long long>::max(), const String& contentType = String()) const;
#endif

protected:
    Blob();
    Blob(PassOwnPtr<BlobData>, long long size);

    // For deserialization.
    Blob(const KURL& srcURL, const String& type, long long size);

    // This is an internal URL referring to the blob data associated with this object. It serves
    // as an identifier for this blob. The internal URL is never used to source the blob's content
    // into an HTML or for FileRead'ing, public blob URLs must be used for those purposes.
    KURL m_internalURL;

    String m_type;
    long long m_size;
};

} // namespace WebCore

#endif // Blob_h