1/*
2 * Copyright (C) 2012 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#include "config.h"
32#include "modules/quota/DOMWindowQuota.h"
33
34#include "core/frame/LocalDOMWindow.h"
35#include "core/frame/LocalFrame.h"
36#include "modules/quota/DeprecatedStorageInfo.h"
37#include "wtf/PassRefPtr.h"
38
39namespace blink {
40
41DOMWindowQuota::DOMWindowQuota(LocalDOMWindow& window)
42    : DOMWindowProperty(window.frame())
43{
44}
45
46DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowQuota);
47
48const char* DOMWindowQuota::supplementName()
49{
50    return "DOMWindowQuota";
51}
52
53// static
54DOMWindowQuota& DOMWindowQuota::from(LocalDOMWindow& window)
55{
56    DOMWindowQuota* supplement = static_cast<DOMWindowQuota*>(WillBeHeapSupplement<LocalDOMWindow>::from(window, supplementName()));
57    if (!supplement) {
58        supplement = new DOMWindowQuota(window);
59        provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
60    }
61    return *supplement;
62}
63
64// static
65DeprecatedStorageInfo* DOMWindowQuota::webkitStorageInfo(LocalDOMWindow& window)
66{
67    return DOMWindowQuota::from(window).webkitStorageInfo();
68}
69
70DeprecatedStorageInfo* DOMWindowQuota::webkitStorageInfo() const
71{
72    if (!m_storageInfo && frame())
73        m_storageInfo = DeprecatedStorageInfo::create();
74    return m_storageInfo.get();
75}
76
77void DOMWindowQuota::trace(Visitor* visitor)
78{
79    visitor->trace(m_storageInfo);
80    WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
81    DOMWindowProperty::trace(visitor);
82}
83
84} // namespace blink
85