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 met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
23 * DAMAGE.
24 */
25
26 #include "config.h"
27 #include "modules/indexeddb/DOMWindowIndexedDatabase.h"
28
29 #include "core/dom/Document.h"
30 #include "core/frame/LocalDOMWindow.h"
31 #include "core/page/Page.h"
32 #include "modules/indexeddb/IDBFactory.h"
33
34 namespace WebCore {
35
DOMWindowIndexedDatabase(LocalDOMWindow & window)36 DOMWindowIndexedDatabase::DOMWindowIndexedDatabase(LocalDOMWindow& window)
37 : DOMWindowProperty(window.frame())
38 , m_window(window)
39 {
40 }
41
~DOMWindowIndexedDatabase()42 DOMWindowIndexedDatabase::~DOMWindowIndexedDatabase()
43 {
44 }
45
trace(Visitor * visitor)46 void DOMWindowIndexedDatabase::trace(Visitor* visitor)
47 {
48 visitor->trace(m_idbFactory);
49 WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
50 }
51
supplementName()52 const char* DOMWindowIndexedDatabase::supplementName()
53 {
54 return "DOMWindowIndexedDatabase";
55 }
56
from(LocalDOMWindow & window)57 DOMWindowIndexedDatabase& DOMWindowIndexedDatabase::from(LocalDOMWindow& window)
58 {
59 DOMWindowIndexedDatabase* supplement = static_cast<DOMWindowIndexedDatabase*>(WillBeHeapSupplement<LocalDOMWindow>::from(window, supplementName()));
60 if (!supplement) {
61 supplement = new DOMWindowIndexedDatabase(window);
62 provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
63 }
64 return *supplement;
65 }
66
willDestroyGlobalObjectInFrame()67 void DOMWindowIndexedDatabase::willDestroyGlobalObjectInFrame()
68 {
69 m_idbFactory = nullptr;
70 DOMWindowProperty::willDestroyGlobalObjectInFrame();
71 }
72
willDetachGlobalObjectFromFrame()73 void DOMWindowIndexedDatabase::willDetachGlobalObjectFromFrame()
74 {
75 m_idbFactory = nullptr;
76 DOMWindowProperty::willDetachGlobalObjectFromFrame();
77 }
78
indexedDB(LocalDOMWindow & window)79 IDBFactory* DOMWindowIndexedDatabase::indexedDB(LocalDOMWindow& window)
80 {
81 return from(window).indexedDB();
82 }
83
indexedDB()84 IDBFactory* DOMWindowIndexedDatabase::indexedDB()
85 {
86 Document* document = m_window.document();
87 if (!document)
88 return 0;
89
90 Page* page = document->page();
91 if (!page)
92 return 0;
93
94 if (!m_window.isCurrentlyDisplayedInFrame())
95 return 0;
96
97 if (!m_idbFactory)
98 m_idbFactory = IDBFactory::create(IndexedDBClient::create());
99 return m_idbFactory.get();
100 }
101
102 } // namespace WebCore
103