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/*
* 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
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Blob_h
#define Blob_h
#include "bindings/core/v8/ScriptWrappable.h"
#include "core/html/URLRegistry.h"
#include "platform/blob/BlobData.h"
#include "platform/heap/Handle.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/text/WTFString.h"
namespace blink {
class ExceptionState;
class ExecutionContext;
class Blob : public GarbageCollectedFinalized<Blob>, public ScriptWrappable, public URLRegistrable {
DEFINE_WRAPPERTYPEINFO();
public:
static Blob* create()
{
return new Blob(BlobDataHandle::create());
}
static Blob* create(PassRefPtr<BlobDataHandle> blobDataHandle)
{
return new Blob(blobDataHandle);
}
virtual ~Blob();
virtual unsigned long long size() const { return m_blobDataHandle->size(); }
virtual Blob* slice(long long start, long long end, const String& contentType, ExceptionState&) const;
// To allow ExceptionState to be passed in last, manually enumerate the optional argument overloads.
Blob* slice(ExceptionState& exceptionState) const
{
return slice(0, std::numeric_limits<long long>::max(), String(), exceptionState);
}
Blob* slice(long long start, ExceptionState& exceptionState) const
{
return slice(start, std::numeric_limits<long long>::max(), String(), exceptionState);
}
Blob* slice(long long start, long long end, ExceptionState& exceptionState) const
{
return slice(start, end, String(), exceptionState);
}
virtual void close(ExecutionContext*, ExceptionState&);
String type() const { return m_blobDataHandle->type(); }
String uuid() const { return m_blobDataHandle->uuid(); }
PassRefPtr<BlobDataHandle> blobDataHandle() const { return m_blobDataHandle; }
// True for all File instances, including the user-built ones.
virtual bool isFile() const { return false; }
// Only true for File instances that are backed by platform files.
virtual bool hasBackingFile() const { return false; }
bool hasBeenClosed() const { return m_hasBeenClosed; }
// Used by the JavaScript Blob and File constructors.
virtual void appendTo(BlobData&) const;
// URLRegistrable to support PublicURLs.
virtual URLRegistry& registry() const override final;
void trace(Visitor*) { }
protected:
explicit Blob(PassRefPtr<BlobDataHandle>);
static void clampSliceOffsets(long long size, long long& start, long long& end);
private:
Blob();
RefPtr<BlobDataHandle> m_blobDataHandle;
bool m_hasBeenClosed;
};
} // namespace blink
#endif // Blob_h
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