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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:
*
* 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 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 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.
*/
#ifndef IDBCursor_h
#define IDBCursor_h
#include "bindings/v8/ScriptValue.h"
#include "bindings/v8/ScriptWrappable.h"
#include "modules/indexeddb/IDBKey.h"
#include "modules/indexeddb/IDBRequest.h"
#include "modules/indexeddb/IndexedDB.h"
#include "public/platform/WebIDBCursor.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
namespace WebCore {
class DOMRequestState;
class ExceptionState;
class IDBAny;
class IDBTransaction;
class ExecutionContext;
class SharedBuffer;
class IDBCursor : public ScriptWrappable, public WTF::RefCountedBase {
public:
static const AtomicString& directionNext();
static const AtomicString& directionNextUnique();
static const AtomicString& directionPrev();
static const AtomicString& directionPrevUnique();
static IndexedDB::CursorDirection stringToDirection(const String& modeString, ExceptionState&);
static const AtomicString& directionToString(unsigned short mode);
static PassRefPtr<IDBCursor> create(PassOwnPtr<blink::WebIDBCursor>, IndexedDB::CursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*);
virtual ~IDBCursor();
// Implement the IDL
const String& direction() const { return directionToString(m_direction); }
ScriptValue key(ExecutionContext*);
ScriptValue primaryKey(ExecutionContext*);
ScriptValue value(ExecutionContext*);
ScriptValue source(ExecutionContext*) const;
PassRefPtr<IDBRequest> update(ScriptState*, ScriptValue&, ExceptionState&);
void advance(unsigned long, ExceptionState&);
void continueFunction(ExecutionContext*, const ScriptValue& key, ExceptionState&);
void continuePrimaryKey(ExecutionContext*, const ScriptValue& key, const ScriptValue& primaryKey, ExceptionState&);
PassRefPtr<IDBRequest> deleteFunction(ExecutionContext*, ExceptionState&);
bool isKeyDirty() const { return m_keyDirty; }
bool isPrimaryKeyDirty() const { return m_primaryKeyDirty; }
bool isValueDirty() const { return m_valueDirty; }
void continueFunction(PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, ExceptionState&);
void postSuccessHandlerCallback();
void close();
void setValueReady(PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer> value);
PassRefPtr<IDBKey> idbPrimaryKey() const { return m_primaryKey; }
IDBRequest* request() const { return m_request.get(); }
virtual bool isKeyCursor() const { return true; }
virtual bool isCursorWithValue() const { return false; }
void deref()
{
if (derefBase())
delete this;
else if (hasOneRef())
checkForReferenceCycle();
}
protected:
IDBCursor(PassOwnPtr<blink::WebIDBCursor>, IndexedDB::CursorDirection, IDBRequest*, IDBAny* source, IDBTransaction*);
private:
PassRefPtr<IDBObjectStore> effectiveObjectStore() const;
void checkForReferenceCycle();
bool isDeleted() const;
OwnPtr<blink::WebIDBCursor> m_backend;
RefPtr<IDBRequest> m_request;
const IndexedDB::CursorDirection m_direction;
RefPtr<IDBAny> m_source;
RefPtr<IDBTransaction> m_transaction;
bool m_gotValue;
bool m_keyDirty;
bool m_primaryKeyDirty;
bool m_valueDirty;
RefPtr<IDBKey> m_key;
RefPtr<IDBKey> m_primaryKey;
RefPtr<SharedBuffer> m_value;
};
} // namespace WebCore
#endif // IDBCursor_h
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