1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#ifndef IDBRequest_h
29#define IDBRequest_h
30
31#include "ActiveDOMObject.h"
32#include "EventTarget.h"
33#include <wtf/PassRefPtr.h>
34#include <wtf/RefCounted.h>
35#include <wtf/RefPtr.h>
36
37#if ENABLE(INDEXED_DATABASE)
38
39namespace WebCore {
40
41class IDBDatabaseError;
42class SerializedScriptValue;
43
44class IDBRequest : public RefCounted<IDBRequest>, public ActiveDOMObject, public EventTarget {
45public:
46    static PassRefPtr<IDBRequest> create(ScriptExecutionContext* context)
47    {
48        return adoptRef(new IDBRequest(context));
49    }
50    ~IDBRequest();
51
52    void abort();
53    unsigned short readyState() const { return m_readyState; }
54    IDBDatabaseError* error() const { return m_error.get(); }
55    SerializedScriptValue* result() const { return m_result.get(); }
56
57    DEFINE_ATTRIBUTE_EVENT_LISTENER(success);
58    DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
59
60    using RefCounted<IDBRequest>::ref;
61    using RefCounted<IDBRequest>::deref;
62
63    // EventTarget interface
64    virtual ScriptExecutionContext* scriptExecutionContext() const { return ActiveDOMObject::scriptExecutionContext(); }
65    virtual IDBRequest* toIDBRequest() { return this; }
66
67private:
68    explicit IDBRequest(ScriptExecutionContext* context);
69
70    // EventTarget interface
71    virtual void refEventTarget() { ref(); }
72    virtual void derefEventTarget() { deref(); }
73    virtual EventTargetData* eventTargetData();
74    virtual EventTargetData* ensureEventTargetData();
75
76    unsigned short m_readyState;
77    RefPtr<IDBDatabaseError> m_error;
78    RefPtr<SerializedScriptValue> m_result;
79
80    EventTargetData m_eventTargetData;
81};
82
83} // namespace WebCore
84
85#endif
86
87#endif // IDBRequest_h
88
89