/platform/external/webkit/WebCore/bindings/js/ScriptCachedFrameData.cpp

  1/*
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  3 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
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  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.
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 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,
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 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 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(), 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))
 87            windowShell->setWindow(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