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/*
* Copyright (C) 2015 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
#pragma once
#if ENABLE(INDEXED_DATABASE)
#include "ActiveDOMObject.h"
#include "ExceptionOr.h"
#include "IDBCursorDirection.h"
#include "IDBCursorInfo.h"
#include <heap/Strong.h>
#include <wtf/Variant.h>
namespace WebCore {
class IDBGetResult;
class IDBIndex;
class IDBObjectStore;
class IDBTransaction;
class IDBCursor : public ScriptWrappable, public RefCounted<IDBCursor>, public ActiveDOMObject {
public:
static Ref<IDBCursor> create(IDBTransaction&, IDBObjectStore&, const IDBCursorInfo&);
static Ref<IDBCursor> create(IDBTransaction&, IDBIndex&, const IDBCursorInfo&);
virtual ~IDBCursor();
using Source = Variant<RefPtr<IDBObjectStore>, RefPtr<IDBIndex>>;
const Source& source() const;
IDBCursorDirection direction() const;
JSC::JSValue key() const;
JSC::JSValue primaryKey() const;
JSC::JSValue value() const;
ExceptionOr<Ref<IDBRequest>> update(JSC::ExecState&, JSC::JSValue);
ExceptionOr<void> advance(unsigned);
ExceptionOr<void> continueFunction(JSC::ExecState&, JSC::JSValue key);
ExceptionOr<void> continuePrimaryKey(JSC::ExecState&, JSC::JSValue key, JSC::JSValue primaryKey);
ExceptionOr<Ref<IDBRequest>> deleteFunction(JSC::ExecState&);
ExceptionOr<void> continueFunction(const IDBKeyData&);
const IDBCursorInfo& info() const { return m_info; }
void setRequest(IDBRequest& request) { m_request = &request; }
void clearRequest() { m_request = nullptr; }
IDBRequest* request() { return m_request; }
void setGetResult(IDBRequest&, const IDBGetResult&);
virtual bool isKeyCursorWithValue() const { return false; }
void decrementOutstandingRequestCount();
bool hasPendingActivity() const final;
protected:
IDBCursor(IDBTransaction&, IDBObjectStore&, const IDBCursorInfo&);
IDBCursor(IDBTransaction&, IDBIndex&, const IDBCursorInfo&);
private:
const char* activeDOMObjectName() const final;
bool canSuspendForDocumentSuspension() const final;
bool sourcesDeleted() const;
IDBObjectStore& effectiveObjectStore() const;
IDBTransaction& transaction() const;
void uncheckedIterateCursor(const IDBKeyData&, unsigned count);
void uncheckedIterateCursor(const IDBKeyData&, const IDBKeyData&);
// Cursors are created with an outstanding iteration request.
unsigned m_outstandingRequestCount { 1 };
IDBCursorInfo m_info;
Source m_source;
IDBRequest* m_request { nullptr };
bool m_gotValue { false };
IDBKeyData m_currentKeyData;
IDBKeyData m_currentPrimaryKeyData;
JSC::Strong<JSC::Unknown> m_currentKey;
JSC::Strong<JSC::Unknown> m_currentPrimaryKey;
JSC::Strong<JSC::Unknown> m_currentValue;
};
inline const IDBCursor::Source& IDBCursor::source() const
{
return m_source;
}
inline IDBCursorDirection IDBCursor::direction() const
{
return m_info.cursorDirection();
}
inline JSC::JSValue IDBCursor::key() const
{
return m_currentKey.get();
}
inline JSC::JSValue IDBCursor::primaryKey() const
{
return m_currentPrimaryKey.get();
}
inline JSC::JSValue IDBCursor::value() const
{
return m_currentValue.get();
}
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
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