ScriptCachedFrameData.cpp   [plain text]


/*
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 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
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 * in the documentation and/or other materials provided with the
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
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#include "config.h"
#include "ScriptCachedFrameData.h"

#include "Document.h"
#include "Frame.h"
#include "GCController.h"
#include "Page.h"
#include "PageConsoleClient.h"
#include "PageGroup.h"
#include "ScriptController.h"
#include <heap/StrongInlines.h>
#include <runtime/JSLock.h>
#include <runtime/WeakGCMapInlines.h>

using namespace JSC;

namespace WebCore {

ScriptCachedFrameData::ScriptCachedFrameData(Frame& frame)
{
    JSLockHolder lock(JSDOMWindowBase::commonVM());

    ScriptController& scriptController = frame.script();
    Vector<JSC::Strong<JSDOMWindowShell>> windowShells = scriptController.windowShells();

    for (size_t i = 0; i < windowShells.size(); ++i) {
        JSDOMWindowShell* windowShell = windowShells[i].get();
        JSDOMWindow* window = windowShell->window();
        m_windows.add(&windowShell->world(), Strong<JSDOMWindow>(window->vm(), window));
        window->setConsoleClient(nullptr);
    }

    scriptController.attachDebugger(nullptr);
}

ScriptCachedFrameData::~ScriptCachedFrameData()
{
    clear();
}

void ScriptCachedFrameData::restore(Frame& frame)
{
    JSLockHolder lock(JSDOMWindowBase::commonVM());

    Page* page = frame.page();
    ScriptController& scriptController = frame.script();
    Vector<JSC::Strong<JSDOMWindowShell>> windowShells = scriptController.windowShells();

    for (size_t i = 0; i < windowShells.size(); ++i) {
        JSDOMWindowShell* windowShell = windowShells[i].get();
        DOMWrapperWorld* world = &windowShell->world();

        if (JSDOMWindow* window = m_windows.get(world).get())
            windowShell->setWindow(window->vm(), window);
        else {
            DOMWindow* domWindow = frame.document()->domWindow();
            if (&windowShell->window()->wrapped() == domWindow)
                continue;

            windowShell->setWindow(domWindow);

            if (page) {
                scriptController.attachDebugger(windowShell, page->debugger());
                windowShell->window()->setProfileGroup(page->group().identifier());
            }
        }

        if (page)
            windowShell->window()->setConsoleClient(&page->console());
    }
}

void ScriptCachedFrameData::clear()
{
    if (m_windows.isEmpty())
        return;

    JSLockHolder lock(JSDOMWindowBase::commonVM());
    m_windows.clear();
    GCController::singleton().garbageCollectSoon();
}

} // namespace WebCore