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/*
* Copyright (C) 2015, 2016 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 "EventTarget.h"
#include "ExceptionOr.h"
#include "IDBActiveDOMObject.h"
#include "IDBError.h"
#include "IDBResourceIdentifier.h"
#include "IndexedDB.h"
#include <heap/Strong.h>
namespace WebCore {
class DOMError;
class Event;
class IDBCursor;
class IDBDatabase;
class IDBIndex;
class IDBKeyData;
class IDBObjectStore;
class IDBResultData;
class IDBTransaction;
class IDBValue;
class ScopeGuard;
class ThreadSafeDataBuffer;
namespace IDBClient {
class IDBConnectionProxy;
class IDBConnectionToServer;
}
class IDBRequest : public EventTargetWithInlineData, public IDBActiveDOMObject, public RefCounted<IDBRequest> {
public:
static Ref<IDBRequest> create(ScriptExecutionContext&, IDBObjectStore&, IDBTransaction&);
static Ref<IDBRequest> create(ScriptExecutionContext&, IDBCursor&, IDBTransaction&);
static Ref<IDBRequest> create(ScriptExecutionContext&, IDBIndex&, IDBTransaction&);
static Ref<IDBRequest> createObjectStoreGet(ScriptExecutionContext&, IDBObjectStore&, IndexedDB::ObjectStoreRecordType, IDBTransaction&);
static Ref<IDBRequest> createIndexGet(ScriptExecutionContext&, IDBIndex&, IndexedDB::IndexRecordType, IDBTransaction&);
const IDBResourceIdentifier& resourceIdentifier() const { return m_resourceIdentifier; }
virtual ~IDBRequest();
using Result = Variant<RefPtr<IDBCursor>, RefPtr<IDBDatabase>, JSC::Strong<JSC::Unknown>>;
ExceptionOr<std::optional<Result>> result() const;
using Source = Variant<RefPtr<IDBObjectStore>, RefPtr<IDBIndex>, RefPtr<IDBCursor>>;
const std::optional<Source>& source() const { return m_source; }
ExceptionOr<DOMError*> error() const;
RefPtr<IDBTransaction> transaction() const;
enum class ReadyState { Pending, Done };
ReadyState readyState() const { return m_readyState; }
bool isDone() const { return m_readyState == ReadyState::Done; }
uint64_t sourceObjectStoreIdentifier() const;
uint64_t sourceIndexIdentifier() const;
IndexedDB::ObjectStoreRecordType requestedObjectStoreRecordType() const;
IndexedDB::IndexRecordType requestedIndexRecordType() const;
ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
using RefCounted::ref;
using RefCounted::deref;
void completeRequestAndDispatchEvent(const IDBResultData&);
void setResult(const IDBKeyData&);
void setResult(const Vector<IDBKeyData>&);
void setResult(const Vector<IDBValue>&);
void setResult(uint64_t);
void setResultToStructuredClone(const IDBValue&);
void setResultToUndefined();
void willIterateCursor(IDBCursor&);
void didOpenOrIterateCursor(const IDBResultData&);
const IDBCursor* pendingCursor() const { return m_pendingCursor.get(); }
void setSource(IDBCursor&);
void setVersionChangeTransaction(IDBTransaction&);
IndexedDB::RequestType requestType() const { return m_requestType; }
bool hasPendingActivity() const final;
protected:
IDBRequest(ScriptExecutionContext&, IDBClient::IDBConnectionProxy&);
void enqueueEvent(Ref<Event>&&);
bool dispatchEvent(Event&) override;
void setResult(Ref<IDBDatabase>&&);
IDBClient::IDBConnectionProxy& connectionProxy() { return m_connectionProxy.get(); }
// FIXME: Protected data members aren't great for maintainability.
// Consider adding protected helper functions and making these private.
ReadyState m_readyState { ReadyState::Pending };
RefPtr<IDBTransaction> m_transaction;
bool m_shouldExposeTransactionToDOM { true };
RefPtr<DOMError> m_domError;
IndexedDB::RequestType m_requestType { IndexedDB::RequestType::Other };
bool m_contextStopped { false };
Event* m_openDatabaseSuccessEvent { nullptr };
private:
IDBRequest(ScriptExecutionContext&, IDBObjectStore&, IDBTransaction&);
IDBRequest(ScriptExecutionContext&, IDBCursor&, IDBTransaction&);
IDBRequest(ScriptExecutionContext&, IDBIndex&, IDBTransaction&);
IDBRequest(ScriptExecutionContext&, IDBObjectStore&, IndexedDB::ObjectStoreRecordType, IDBTransaction&);
IDBRequest(ScriptExecutionContext&, IDBIndex&, IndexedDB::IndexRecordType, IDBTransaction&);
EventTargetInterface eventTargetInterface() const override;
const char* activeDOMObjectName() const final;
bool canSuspendForDocumentSuspension() const final;
void stop() final;
virtual void cancelForStop();
void refEventTarget() final { RefCounted::ref(); }
void derefEventTarget() final { RefCounted::deref(); }
void uncaughtExceptionInEventHandler() final;
virtual bool isOpenDBRequest() const { return false; }
void onError();
void onSuccess();
IDBCursor* resultCursor();
IDBError m_idbError;
IDBResourceIdentifier m_resourceIdentifier;
std::optional<Result> m_result;
std::optional<Source> m_source;
bool m_hasPendingActivity { true };
IndexedDB::ObjectStoreRecordType m_requestedObjectStoreRecordType { IndexedDB::ObjectStoreRecordType::ValueOnly };
IndexedDB::IndexRecordType m_requestedIndexRecordType { IndexedDB::IndexRecordType::Key };
RefPtr<IDBCursor> m_pendingCursor;
std::unique_ptr<ScopeGuard> m_cursorRequestNotifier;
Ref<IDBClient::IDBConnectionProxy> m_connectionProxy;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
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