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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
#include "bindings/v8/DOMRequestState.h"
#include "bindings/v8/ScriptValue.h"
#include "bindings/v8/ScriptWrappable.h"
#include "core/dom/ActiveDOMObject.h"
#include "core/dom/DOMError.h"
#include "core/dom/DOMStringList.h"
#include "core/events/Event.h"
#include "core/events/EventListener.h"
#include "core/events/EventTarget.h"
#include "heap/Handle.h"
#include "modules/indexeddb/IDBAny.h"
#include "modules/indexeddb/IDBTransaction.h"
#include "modules/indexeddb/IndexedDB.h"
#include "public/platform/WebIDBCursor.h"
namespace WebCore {
class ExceptionState;
class IDBCursor;
struct IDBDatabaseMetadata;
class SharedBuffer;
// Base class to simplify usage of event target refcounting.
class IDBRequestBase : public WTF::RefCountedBase {
public:
virtual void deref() = 0;
protected:
virtual ~IDBRequestBase() { }
};
class IDBRequest : public IDBRequestBase, public ScriptWrappable, public EventTargetWithInlineData, public ActiveDOMObject {
DEFINE_EVENT_TARGET_REFCOUNTING(IDBRequestBase);
public:
static PassRefPtr<IDBRequest> create(ExecutionContext*, PassRefPtr<IDBAny> source, IDBTransaction*);
virtual ~IDBRequest();
ScriptValue result(ExceptionState&);
PassRefPtrWillBeRawPtr<DOMError> error(ExceptionState&) const;
ScriptValue source(ExecutionContext*) const;
PassRefPtr<IDBTransaction> transaction() const { return m_transaction; }
bool isResultDirty() const { return m_resultDirty; }
PassRefPtr<IDBAny> resultAsAny() const { return m_result; }
// Requests made during index population are implementation details and so
// events should not be visible to script.
void preventPropagation() { m_preventPropagation = true; }
// Defined in the IDL
enum ReadyState {
PENDING = 1,
DONE = 2,
EarlyDeath = 3
};
const String& readyState() const;
DEFINE_ATTRIBUTE_EVENT_LISTENER(success);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
void setCursorDetails(IndexedDB::CursorType, blink::WebIDBCursor::Direction);
void setPendingCursor(PassRefPtr<IDBCursor>);
void abort();
virtual void onError(PassRefPtrWillBeRawPtr<DOMError>);
virtual void onSuccess(const Vector<String>&);
virtual void onSuccess(PassOwnPtr<blink::WebIDBCursor>, PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer>);
virtual void onSuccess(PassRefPtr<IDBKey>);
virtual void onSuccess(PassRefPtr<SharedBuffer>);
virtual void onSuccess(PassRefPtr<SharedBuffer>, PassRefPtr<IDBKey>, const IDBKeyPath&);
virtual void onSuccess(int64_t);
virtual void onSuccess();
virtual void onSuccess(PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer>);
// Only IDBOpenDBRequest instances should receive these:
virtual void onBlocked(int64_t oldVersion) { ASSERT_NOT_REACHED(); }
virtual void onUpgradeNeeded(int64_t oldVersion, PassOwnPtr<blink::WebIDBDatabase>, const IDBDatabaseMetadata&, blink::WebIDBDataLoss, String dataLossMessage) { ASSERT_NOT_REACHED(); }
virtual void onSuccess(PassOwnPtr<blink::WebIDBDatabase>, const IDBDatabaseMetadata&) { ASSERT_NOT_REACHED(); }
// ActiveDOMObject
virtual bool hasPendingActivity() const OVERRIDE FINAL;
virtual void stop() OVERRIDE FINAL;
// EventTarget
virtual const AtomicString& interfaceName() const OVERRIDE;
virtual ExecutionContext* executionContext() const OVERRIDE FINAL;
virtual void uncaughtExceptionInEventHandler() OVERRIDE FINAL;
using EventTarget::dispatchEvent;
virtual bool dispatchEvent(PassRefPtr<Event>) OVERRIDE;
// Called by a version change transaction that has finished to set this
// request back from DONE (following "upgradeneeded") back to PENDING (for
// the upcoming "success" or "error").
void transactionDidFinishAndDispatch();
virtual void deref() OVERRIDE FINAL
{
if (derefBase())
delete this;
else if (hasOneRef())
checkForReferenceCycle();
}
DOMRequestState* requestState() { return &m_requestState; }
IDBCursor* getResultCursor() const;
protected:
IDBRequest(ExecutionContext*, PassRefPtr<IDBAny> source, IDBTransaction*);
void enqueueEvent(PassRefPtr<Event>);
void dequeueEvent(Event*);
virtual bool shouldEnqueueEvent() const;
void onSuccessInternal(PassRefPtr<IDBAny>);
void setResult(PassRefPtr<IDBAny>);
bool m_contextStopped;
RefPtr<IDBTransaction> m_transaction;
ReadyState m_readyState;
bool m_requestAborted; // May be aborted by transaction then receive async onsuccess; ignore vs. assert.
private:
void setResultCursor(PassRefPtr<IDBCursor>, PassRefPtr<IDBKey>, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer> value);
void checkForReferenceCycle();
RefPtr<IDBAny> m_source;
RefPtr<IDBAny> m_result;
RefPtrWillBePersistent<DOMError> m_error;
bool m_hasPendingActivity;
Vector<RefPtr<Event> > m_enqueuedEvents;
// Only used if the result type will be a cursor.
IndexedDB::CursorType m_cursorType;
blink::WebIDBCursor::Direction m_cursorDirection;
// When a cursor is continued/advanced, m_result is cleared and m_pendingCursor holds it.
RefPtr<IDBCursor> m_pendingCursor;
// New state is not applied to the cursor object until the event is dispatched.
RefPtr<IDBKey> m_cursorKey;
RefPtr<IDBKey> m_cursorPrimaryKey;
RefPtr<SharedBuffer> m_cursorValue;
bool m_didFireUpgradeNeededEvent;
bool m_preventPropagation;
bool m_resultDirty;
DOMRequestState m_requestState;
};
} // namespace WebCore
#endif // IDBRequest_h
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