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#include "Frame.h"
30#include "ScriptController.h"
31#include "V8DOMWindow.h"
32
33namespace WebCore {
34
35ScriptCachedFrameData::ScriptCachedFrameData(Frame* frame)
36    : m_domWindow(0)
37{
38    v8::HandleScope handleScope;
39    // The context can only be the context of the main world.
40    ASSERT(V8Proxy::mainWorldContext(frame) == V8Proxy::context(frame));
41    m_context.set(V8Proxy::mainWorldContext(frame));
42    // The context can be 0, e.g. if JS is disabled in the browser.
43    if (m_context.get().IsEmpty())
44        return;
45    m_global.set(m_context.get()->Global());
46    m_domWindow = frame->domWindow();
47}
48
49DOMWindow* ScriptCachedFrameData::domWindow() const
50{
51    return m_domWindow;
52}
53
54void ScriptCachedFrameData::restore(Frame* frame)
55{
56    if (m_context.get().IsEmpty())
57        return;
58
59    v8::HandleScope handleScope;
60    v8::Context::Scope contextScope(m_context.get());
61
62    m_context.get()->ReattachGlobal(m_global.get());
63    V8Proxy* proxy = V8Proxy::retrieve(frame);
64    if (proxy)
65        proxy->windowShell()->setContext(m_context.get());
66}
67
68void ScriptCachedFrameData::clear()
69{
70    m_context.clear();
71    m_global.clear();
72}
73
74} // namespace WebCore
75