Source/WebCore/bindings/v8/WorldContextHandle.cpp

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#include "config.h"
#include "WorldContextHandle.h"

#include "ScriptController.h"
#include "V8Binding.h"
#include "V8DOMWindow.h"
#include "V8DOMWindowShell.h"

namespace WebCore {

WorldContextHandle::WorldContextHandle(WorldToUse worldToUse)
    : m_worldToUse(worldToUse)
{
    if (worldToUse == UseMainWorld || worldToUse == UseWorkerWorld)
        return;

#if ENABLE(WORKERS)
    // FIXME We are duplicating a lot of effort here checking the context for the worker and for the isolated world.
    if (v8::Context::InContext()) {
        v8::Handle<v8::Context> context = v8::Context::GetCurrent();
        if (!context.IsEmpty()) {
            if (UNLIKELY(!V8DOMWrapper::isWrapperOfType(toInnerGlobalObject(context), &V8DOMWindow::info))) {
                m_worldToUse = UseWorkerWorld;
                return;
            }
        }
    }
#endif

    V8DOMWindowShell* shell = V8DOMWindowShell::getEntered();
    if (LIKELY(!shell)) {
        m_worldToUse = UseMainWorld;
        return;
    }

    ASSERT(!shell->context().IsEmpty());
    m_context = SharedPersistent<v8::Context>::create(shell->context());
}

v8::Local<v8::Context> WorldContextHandle::adjustedContext(ScriptController* script) const
{
    ASSERT(m_worldToUse != UseWorkerWorld);
    if (m_worldToUse == UseMainWorld)
        return script->mainWorldContext();

    ASSERT(!m_context->get().IsEmpty());
    return v8::Local<v8::Context>::New(m_context->get());
}

} // namespace WebCore