1 /*
2 * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #include "config.h"
22 #include "core/page/PageGroupLoadDeferrer.h"
23
24 #include "core/dom/Document.h"
25 #include "core/loader/FrameLoader.h"
26 #include "core/frame/Frame.h"
27 #include "core/page/Page.h"
28 #include "core/page/PageGroup.h"
29 #include "wtf/HashSet.h"
30
31 namespace WebCore {
32
33 using namespace std;
34
PageGroupLoadDeferrer(Page * page,bool deferSelf)35 PageGroupLoadDeferrer::PageGroupLoadDeferrer(Page* page, bool deferSelf)
36 {
37 const HashSet<Page*>& pages = page->group().pages();
38
39 HashSet<Page*>::const_iterator end = pages.end();
40 for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) {
41 Page* otherPage = *it;
42 if ((deferSelf || otherPage != page)) {
43 if (!otherPage->defersLoading()) {
44 m_deferredFrames.append(otherPage->mainFrame());
45
46 // Ensure that we notify the client if the initial empty document is accessed before showing anything
47 // modal, to prevent spoofs while the modal window or sheet is visible.
48 otherPage->mainFrame()->loader().notifyIfInitialDocumentAccessed();
49
50 // This code is not logically part of load deferring, but we do not want JS code executed beneath modal
51 // windows or sheets, which is exactly when PageGroupLoadDeferrer is used.
52 for (Frame* frame = otherPage->mainFrame(); frame; frame = frame->tree().traverseNext())
53 frame->document()->suspendScheduledTasks();
54 }
55 }
56 }
57
58 size_t count = m_deferredFrames.size();
59 for (size_t i = 0; i < count; ++i)
60 if (Page* page = m_deferredFrames[i]->page())
61 page->setDefersLoading(true);
62 }
63
~PageGroupLoadDeferrer()64 PageGroupLoadDeferrer::~PageGroupLoadDeferrer()
65 {
66 for (size_t i = 0; i < m_deferredFrames.size(); ++i) {
67 if (Page* page = m_deferredFrames[i]->page()) {
68 page->setDefersLoading(false);
69
70 for (Frame* frame = page->mainFrame(); frame; frame = frame->tree().traverseNext())
71 frame->document()->resumeScheduledTasks();
72 }
73 }
74 }
75
76
77 } // namespace WebCore
78