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 "Document.h"
25#include "DocumentParser.h"
26#include "Frame.h"
27#include "Page.h"
28#include "PageGroup.h"
29#include "ScriptRunner.h"
30#include <wtf/HashSet.h>
31
32namespace WebCore {
33
34using namespace std;
35
36PageGroupLoadDeferrer::PageGroupLoadDeferrer(Page* page, bool deferSelf)
37{
38    const HashSet<Page*>& pages = page->group().pages();
39
40    HashSet<Page*>::const_iterator end = pages.end();
41    for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) {
42        Page* otherPage = *it;
43        if ((deferSelf || otherPage != page)) {
44            if (!otherPage->defersLoading()) {
45                m_deferredFrames.append(otherPage->mainFrame());
46
47                // This code is not logically part of load deferring, but we do not want JS code executed beneath modal
48                // windows or sheets, which is exactly when PageGroupLoadDeferrer is used.
49                for (Frame* frame = otherPage->mainFrame(); frame; frame = frame->tree()->traverseNext())
50                    frame->document()->suspendScheduledTasks(ActiveDOMObject::WillDeferLoading);
51            }
52        }
53    }
54
55    size_t count = m_deferredFrames.size();
56    for (size_t i = 0; i < count; ++i)
57        if (Page* page = m_deferredFrames[i]->page())
58            page->setDefersLoading(true);
59}
60
61PageGroupLoadDeferrer::~PageGroupLoadDeferrer()
62{
63    for (size_t i = 0; i < m_deferredFrames.size(); ++i) {
64        if (Page* page = m_deferredFrames[i]->page()) {
65            page->setDefersLoading(false);
66
67            for (Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext())
68                frame->document()->resumeScheduledTasks(ActiveDOMObject::WillDeferLoading);
69        }
70    }
71}
72
73
74} // namespace WebCore
75