1/*
2 * Copyright (C) 2011 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef WebArrayBuffer_h
32#define WebArrayBuffer_h
33
34#include "WebCommon.h"
35#include "WebPrivatePtr.h"
36
37namespace v8 {
38class Value;
39template <class T> class Handle;
40}
41
42namespace WTF { class ArrayBuffer; }
43
44#if INSIDE_BLINK
45namespace WTF { template <typename T> class PassRefPtr; }
46#endif
47
48namespace blink {
49
50class WebArrayBuffer {
51public:
52    ~WebArrayBuffer() { reset(); }
53
54    WebArrayBuffer() { }
55    WebArrayBuffer(const WebArrayBuffer& b) { assign(b); }
56    WebArrayBuffer& operator=(const WebArrayBuffer& b)
57    {
58        assign(b);
59        return *this;
60    }
61
62    BLINK_PLATFORM_EXPORT static WebArrayBuffer create(unsigned numElements, unsigned elementByteSize);
63
64    BLINK_PLATFORM_EXPORT void reset();
65    BLINK_PLATFORM_EXPORT void assign(const WebArrayBuffer&);
66
67    bool isNull() const { return m_private.isNull(); }
68    BLINK_PLATFORM_EXPORT void* data() const;
69    BLINK_PLATFORM_EXPORT unsigned byteLength() const;
70
71#if INSIDE_BLINK
72    BLINK_PLATFORM_EXPORT WebArrayBuffer(const WTF::PassRefPtr<WTF::ArrayBuffer>&);
73    BLINK_PLATFORM_EXPORT WebArrayBuffer& operator=(const WTF::PassRefPtr<WTF::ArrayBuffer>&);
74    BLINK_PLATFORM_EXPORT operator WTF::PassRefPtr<WTF::ArrayBuffer>() const;
75#endif
76
77protected:
78    WebPrivatePtr<WTF::ArrayBuffer> m_private;
79};
80
81} // namespace blink
82
83#endif // WebArrayBuffer_h
84