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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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") 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 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 IDBRequest_h
#define IDBRequest_h
#if ENABLE(INDEXED_DATABASE)
#include "ActiveDOMObject.h"
#include "EventListener.h"
#include "EventNames.h"
#include "EventTarget.h"
#include "IDBAny.h"
#include "IDBCallbacks.h"
#include "Timer.h"
#include <wtf/Vector.h>
namespace WebCore {
class IDBTransactionBackendInterface;
class IDBRequest : public IDBCallbacks, public EventTarget, public ActiveDOMObject {
public:
static PassRefPtr<IDBRequest> create(ScriptExecutionContext* context, PassRefPtr<IDBAny> source, IDBTransactionBackendInterface* transaction = 0) { return adoptRef(new IDBRequest(context, source, transaction)); }
virtual ~IDBRequest();
// Defined in the IDL
enum ReadyState {
LOADING = 1,
DONE = 2
};
unsigned short readyState() const { return m_readyState; }
DEFINE_ATTRIBUTE_EVENT_LISTENER(success);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
bool resetReadyState();
// IDBCallbacks
virtual void onError(PassRefPtr<IDBDatabaseError>);
virtual void onSuccess(); // For "null".
virtual void onSuccess(PassRefPtr<IDBDatabaseBackendInterface>);
virtual void onSuccess(PassRefPtr<IDBCursorBackendInterface>);
virtual void onSuccess(PassRefPtr<IDBIndexBackendInterface>);
virtual void onSuccess(PassRefPtr<IDBKey>);
virtual void onSuccess(PassRefPtr<IDBObjectStoreBackendInterface>);
virtual void onSuccess(PassRefPtr<SerializedScriptValue>);
// EventTarget
virtual IDBRequest* toIDBRequest() { return this; }
// ActiveDOMObject
virtual ScriptExecutionContext* scriptExecutionContext() const;
virtual bool canSuspend() const;
using RefCounted<IDBCallbacks>::ref;
using RefCounted<IDBCallbacks>::deref;
private:
IDBRequest(ScriptExecutionContext*, PassRefPtr<IDBAny> source, IDBTransactionBackendInterface* transaction);
void timerFired(Timer<IDBRequest>*);
void scheduleEvent(PassRefPtr<IDBAny> result, PassRefPtr<IDBDatabaseError>);
// EventTarget
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData();
virtual EventTargetData* ensureEventTargetData();
RefPtr<IDBAny> m_source;
RefPtr<IDBTransactionBackendInterface> m_transaction;
struct PendingEvent {
RefPtr<IDBAny> m_result;
RefPtr<IDBDatabaseError> m_error;
};
Vector<PendingEvent> m_pendingEvents;
// Used to fire events asynchronously.
Timer<IDBRequest> m_timer;
RefPtr<IDBRequest> m_selfRef; // This is set to us iff there's an event pending.
ReadyState m_readyState;
EventTargetData m_eventTargetData;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBRequest_h
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