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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 IDBTransaction_h
#define IDBTransaction_h
#if ENABLE(INDEXED_DATABASE)
#include "ActiveDOMObject.h"
#include "DOMError.h"
#include "DOMStringList.h"
#include "Event.h"
#include "EventListener.h"
#include "EventNames.h"
#include "EventTarget.h"
#include "IDBMetadata.h"
#include "IDBTransactionBackendInterface.h"
#include "IDBTransactionCallbacks.h"
#include <wtf/HashSet.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class IDBCursor;
class IDBDatabase;
class IDBObjectStore;
class IDBOpenDBRequest;
class IDBTransaction : public IDBTransactionCallbacks, public EventTarget, public ActiveDOMObject {
public:
enum Mode {
READ_ONLY = 0,
READ_WRITE = 1,
VERSION_CHANGE = 2
};
static PassRefPtr<IDBTransaction> create(ScriptExecutionContext*, PassRefPtr<IDBTransactionBackendInterface>, Mode, IDBDatabase*);
static PassRefPtr<IDBTransaction> create(ScriptExecutionContext*, PassRefPtr<IDBTransactionBackendInterface>, Mode, IDBDatabase*, IDBOpenDBRequest*);
virtual ~IDBTransaction();
static const AtomicString& modeReadOnly();
static const AtomicString& modeReadWrite();
static const AtomicString& modeVersionChange();
static const AtomicString& modeReadOnlyLegacy();
static const AtomicString& modeReadWriteLegacy();
static Mode stringToMode(const String&, ExceptionCode&);
static const AtomicString& modeToString(Mode, ExceptionCode&);
IDBTransactionBackendInterface* backend() const;
bool isActive() const { return m_active; }
bool isFinished() const { return m_state == Finished; }
bool isReadOnly() const { return m_mode == READ_ONLY; }
bool isVersionChange() const { return m_mode == VERSION_CHANGE; }
// Implement the IDBTransaction IDL
const String& mode() const;
IDBDatabase* db() const { return m_database.get(); }
PassRefPtr<DOMError> error() const { return m_error; }
PassRefPtr<IDBObjectStore> objectStore(const String& name, ExceptionCode&);
void abort(ExceptionCode&);
class OpenCursorNotifier {
public:
OpenCursorNotifier(PassRefPtr<IDBTransaction>, IDBCursor*);
~OpenCursorNotifier();
private:
RefPtr<IDBTransaction> m_transaction;
IDBCursor* m_cursor;
};
void registerRequest(IDBRequest*);
void unregisterRequest(IDBRequest*);
void objectStoreCreated(const String&, PassRefPtr<IDBObjectStore>);
void objectStoreDeleted(const String&);
void setActive(bool);
void setError(PassRefPtr<DOMError>);
DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
DEFINE_ATTRIBUTE_EVENT_LISTENER(complete);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
// IDBTransactionCallbacks
virtual void onAbort();
virtual void onComplete();
// EventTarget
virtual const AtomicString& interfaceName() const;
virtual ScriptExecutionContext* scriptExecutionContext() const;
virtual bool dispatchEvent(PassRefPtr<Event>);
bool dispatchEvent(PassRefPtr<Event> event, ExceptionCode& ec) { return EventTarget::dispatchEvent(event, ec); }
// ActiveDOMObject
virtual bool hasPendingActivity() const OVERRIDE;
virtual bool canSuspend() const OVERRIDE;
virtual void stop() OVERRIDE;
using RefCounted<IDBTransactionCallbacks>::ref;
using RefCounted<IDBTransactionCallbacks>::deref;
private:
IDBTransaction(ScriptExecutionContext*, PassRefPtr<IDBTransactionBackendInterface>, Mode, IDBDatabase*, IDBOpenDBRequest*);
void enqueueEvent(PassRefPtr<Event>);
void closeOpenCursors();
void registerOpenCursor(IDBCursor*);
void unregisterOpenCursor(IDBCursor*);
// EventTarget
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData();
virtual EventTargetData* ensureEventTargetData();
enum State {
Unused, // No requests have been made.
Used, // At least one request has been made.
Finishing, // In the process of aborting or completing.
Finished, // No more events will fire and no new requests may be filed.
};
RefPtr<IDBTransactionBackendInterface> m_backend;
RefPtr<IDBDatabase> m_database;
IDBOpenDBRequest* m_openDBRequest;
const Mode m_mode;
bool m_active;
State m_state;
bool m_hasPendingActivity;
bool m_contextStopped;
RefPtr<DOMError> m_error;
ListHashSet<IDBRequest*> m_requestList;
typedef HashMap<String, RefPtr<IDBObjectStore> > IDBObjectStoreMap;
IDBObjectStoreMap m_objectStoreMap;
typedef HashMap<RefPtr<IDBObjectStore>, IDBObjectStoreMetadata> IDBObjectStoreMetadataMap;
IDBObjectStoreMetadataMap m_objectStoreCleanupMap;
HashSet<IDBCursor*> m_openCursors;
EventTargetData m_eventTargetData;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBTransaction_h
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