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 blink {
35
DOMWindowIndexedDatabase(LocalDOMWindow & window)36 DOMWindowIndexedDatabase::DOMWindowIndexedDatabase(LocalDOMWindow& window)
37 : DOMWindowProperty(window.frame())
38 , m_window(window)
39 {
40 }
41
42 DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowIndexedDatabase);
43
trace(Visitor * visitor)44 void DOMWindowIndexedDatabase::trace(Visitor* visitor)
45 {
46 visitor->trace(m_idbFactory);
47 WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
48 DOMWindowProperty::trace(visitor);
49 }
50
supplementName()51 const char* DOMWindowIndexedDatabase::supplementName()
52 {
53 return "DOMWindowIndexedDatabase";
54 }
55
from(LocalDOMWindow & window)56 DOMWindowIndexedDatabase& DOMWindowIndexedDatabase::from(LocalDOMWindow& window)
57 {
58 DOMWindowIndexedDatabase* supplement = static_cast<DOMWindowIndexedDatabase*>(WillBeHeapSupplement<LocalDOMWindow>::from(window, supplementName()));
59 if (!supplement) {
60 supplement = new DOMWindowIndexedDatabase(window);
61 provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
62 }
63 return *supplement;
64 }
65
willDestroyGlobalObjectInFrame()66 void DOMWindowIndexedDatabase::willDestroyGlobalObjectInFrame()
67 {
68 m_idbFactory = nullptr;
69 DOMWindowProperty::willDestroyGlobalObjectInFrame();
70 }
71
willDetachGlobalObjectFromFrame()72 void DOMWindowIndexedDatabase::willDetachGlobalObjectFromFrame()
73 {
74 m_idbFactory = nullptr;
75 DOMWindowProperty::willDetachGlobalObjectFromFrame();
76 }
77
indexedDB(LocalDOMWindow & window)78 IDBFactory* DOMWindowIndexedDatabase::indexedDB(LocalDOMWindow& window)
79 {
80 return from(window).indexedDB();
81 }
82
indexedDB()83 IDBFactory* DOMWindowIndexedDatabase::indexedDB()
84 {
85 Document* document = m_window.document();
86 if (!document)
87 return 0;
88
89 Page* page = document->page();
90 if (!page)
91 return 0;
92
93 if (!m_window.isCurrentlyDisplayedInFrame())
94 return 0;
95
96 if (!m_idbFactory)
97 m_idbFactory = IDBFactory::create(IndexedDBClient::create());
98 return m_idbFactory.get();
99 }
100
101 } // namespace blink
102