1/*
2 * Copyright 2010, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * 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 THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "ScriptCachedFrameData.h"
28
29#if PLATFORM(ANDROID) || PLATFORM(QT)
30// FIXME: the right guard should be ENABLE(PAGE_CACHE). Replace with the right guard, once
31// https://bugs.webkit.org/show_bug.cgi?id=35061 is fixed.
32
33#include "Frame.h"
34#include "ScriptController.h"
35#include "V8DOMWindow.h"
36
37namespace WebCore {
38
39ScriptCachedFrameData::ScriptCachedFrameData(Frame* frame)
40    : m_domWindow(0)
41{
42    v8::HandleScope handleScope;
43    // The context can only be the context of the main world.
44    ASSERT(V8Proxy::mainWorldContext(frame) == V8Proxy::context(frame));
45    m_context.set(V8Proxy::mainWorldContext(frame));
46    // The context can be 0, e.g. if JS is disabled in the browser.
47    if (m_context.get().IsEmpty())
48        return;
49    m_global.set(m_context.get()->Global());
50    m_domWindow = frame->domWindow();
51}
52
53DOMWindow* ScriptCachedFrameData::domWindow() const
54{
55    return m_domWindow;
56}
57
58void ScriptCachedFrameData::restore(Frame* frame)
59{
60    if (m_context.get().IsEmpty())
61        return;
62
63    v8::HandleScope handleScope;
64    v8::Context::Scope contextScope(m_context.get());
65
66    m_context.get()->ReattachGlobal(m_global.get());
67    V8Proxy* proxy = V8Proxy::retrieve(frame);
68    if (proxy)
69        proxy->windowShell()->setContext(m_context.get());
70}
71
72void ScriptCachedFrameData::clear()
73{
74    m_context.clear();
75    m_global.clear();
76}
77
78} // namespace WebCore
79
80#endif // PLATFORM(ANDROID) || PLATFORM(QT)
81