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 "PageGroupLoadDeferrer.h"
23
24#include "Frame.h"
25#include "Page.h"
26#include "PageGroup.h"
27#include <wtf/HashSet.h>
28
29namespace WebCore {
30
31using namespace std;
32
33PageGroupLoadDeferrer::PageGroupLoadDeferrer(Page* page, bool deferSelf)
34{
35    const HashSet<Page*>& pages = page->group().pages();
36
37    HashSet<Page*>::const_iterator end = pages.end();
38    for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) {
39        Page* otherPage = *it;
40        if ((deferSelf || otherPage != page)) {
41            if (!otherPage->defersLoading())
42                m_deferredFrames.append(otherPage->mainFrame());
43
44            // This code is not logically part of load deferring, but we do not want JS code executed beneath modal
45            // windows or sheets, which is exactly when PageGroupLoadDeferrer is used.
46            for (Frame* frame = otherPage->mainFrame(); frame; frame = frame->tree()->traverseNext())
47                frame->document()->suspendActiveDOMObjects();
48        }
49    }
50
51    size_t count = m_deferredFrames.size();
52    for (size_t i = 0; i < count; ++i)
53        if (Page* page = m_deferredFrames[i]->page())
54            page->setDefersLoading(true);
55}
56
57PageGroupLoadDeferrer::~PageGroupLoadDeferrer()
58{
59    for (size_t i = 0; i < m_deferredFrames.size(); ++i) {
60        if (Page* page = m_deferredFrames[i]->page()) {
61            page->setDefersLoading(false);
62
63            for (Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext())
64                frame->document()->resumeActiveDOMObjects();
65        }
66    }
67}
68
69
70} // namespace WebCore
71