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/page/DOMWindow.h" 31 #include "core/page/Page.h" 32 #include "modules/indexeddb/IDBFactory.h" 33 #include "modules/indexeddb/PageGroupIndexedDatabase.h" 34 35 namespace WebCore { 36 37 DOMWindowIndexedDatabase::DOMWindowIndexedDatabase(DOMWindow* window) 38 : DOMWindowProperty(window->frame()) 39 , m_window(window) 40 { 41 } 42 43 DOMWindowIndexedDatabase::~DOMWindowIndexedDatabase() 44 { 45 } 46 47 const char* DOMWindowIndexedDatabase::supplementName() 48 { 49 return "DOMWindowIndexedDatabase"; 50 } 51 52 DOMWindowIndexedDatabase* DOMWindowIndexedDatabase::from(DOMWindow* window) 53 { 54 DOMWindowIndexedDatabase* supplement = static_cast<DOMWindowIndexedDatabase*>(Supplement<DOMWindow>::from(window, supplementName())); 55 if (!supplement) { 56 supplement = new DOMWindowIndexedDatabase(window); 57 provideTo(window, supplementName(), adoptPtr(supplement)); 58 } 59 return supplement; 60 } 61 62 void DOMWindowIndexedDatabase::willDestroyGlobalObjectInFrame() 63 { 64 m_idbFactory = nullptr; 65 DOMWindowProperty::willDestroyGlobalObjectInFrame(); 66 } 67 68 void DOMWindowIndexedDatabase::willDetachGlobalObjectFromFrame() 69 { 70 m_idbFactory = nullptr; 71 DOMWindowProperty::willDetachGlobalObjectFromFrame(); 72 } 73 74 IDBFactory* DOMWindowIndexedDatabase::indexedDB(DOMWindow* window) 75 { 76 return from(window)->indexedDB(); 77 } 78 79 IDBFactory* DOMWindowIndexedDatabase::indexedDB() 80 { 81 Document* document = m_window->document(); 82 if (!document) 83 return 0; 84 85 Page* page = document->page(); 86 if (!page) 87 return 0; 88 89 if (!m_window->isCurrentlyDisplayedInFrame()) 90 return 0; 91 92 if (!m_idbFactory) 93 m_idbFactory = IDBFactory::create(PageGroupIndexedDatabase::from(page->group())->factoryBackend()); 94 return m_idbFactory.get(); 95 } 96 97 } // namespace WebCore 98