1/*
2 * Copyright (c) 2008, Google Inc. All rights reserved.
3 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 *     * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *     * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *     * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "config.h"
33#include "ScriptCachedFrameData.h"
34
35#include "Frame.h"
36#include "GCController.h"
37#include "Page.h"
38#include "PageGroup.h"
39#include <runtime/JSLock.h>
40#include "ScriptController.h"
41
42using namespace JSC;
43
44namespace WebCore {
45
46ScriptCachedFrameData::ScriptCachedFrameData(Frame* frame)
47    : m_domWindow(0)
48{
49    JSLock lock(SilenceAssertionsOnly);
50
51    ScriptController* scriptController = frame->script();
52    ScriptController::ShellMap& windowShells = scriptController->m_windowShells;
53
54    ScriptController::ShellMap::iterator windowShellsEnd = windowShells.end();
55    for (ScriptController::ShellMap::iterator iter = windowShells.begin(); iter != windowShellsEnd; ++iter) {
56        JSDOMWindow* window = iter->second->window();
57        m_windows.add(iter->first.get(), Strong<JSDOMWindow>(window->globalData(), window));
58        m_domWindow = window->impl();
59    }
60
61    scriptController->attachDebugger(0);
62}
63
64DOMWindow* ScriptCachedFrameData::domWindow() const
65{
66    return m_domWindow;
67}
68
69ScriptCachedFrameData::~ScriptCachedFrameData()
70{
71    clear();
72}
73
74void ScriptCachedFrameData::restore(Frame* frame)
75{
76    JSLock lock(SilenceAssertionsOnly);
77
78    ScriptController* scriptController = frame->script();
79    ScriptController::ShellMap& windowShells = scriptController->m_windowShells;
80
81    ScriptController::ShellMap::iterator windowShellsEnd = windowShells.end();
82    for (ScriptController::ShellMap::iterator iter = windowShells.begin(); iter != windowShellsEnd; ++iter) {
83        DOMWrapperWorld* world = iter->first.get();
84        JSDOMWindowShell* windowShell = iter->second.get();
85
86        if (JSDOMWindow* window = m_windows.get(world).get())
87            windowShell->setWindow(window->globalData(), window);
88        else {
89            windowShell->setWindow(frame->domWindow());
90
91            if (Page* page = frame->page()) {
92                scriptController->attachDebugger(windowShell, page->debugger());
93                windowShell->window()->setProfileGroup(page->group().identifier());
94            }
95        }
96    }
97}
98
99void ScriptCachedFrameData::clear()
100{
101    if (m_windows.isEmpty())
102        return;
103
104    JSLock lock(SilenceAssertionsOnly);
105    m_windows.clear();
106    gcController().garbageCollectSoon();
107}
108
109} // namespace WebCore
110