xref: /external/webkit/Source/WebCore/bindings/v8/specialization/V8BindingState.cpp

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "config.h"
#include "V8BindingState.h"

#include "Frame.h"
#include "ScriptController.h"
#include "V8Proxy.h"
#include <wtf/StdLibExtras.h>

namespace WebCore {

State<V8Binding>* State<V8Binding>::Only()
{
    DEFINE_STATIC_LOCAL(State, globalV8BindingState, ());
    return &globalV8BindingState;
}

DOMWindow* State<V8Binding>::activeWindow()
{
    v8::Local<v8::Context> activeContext = v8::Context::GetCalling();
    if (activeContext.IsEmpty()) {
        // There is a single activation record on the stack, so that must
        // be the activeContext.
        activeContext = v8::Context::GetCurrent();
    }
    return V8Proxy::retrieveWindow(activeContext);
}

DOMWindow* State<V8Binding>::firstWindow()
{
    return V8Proxy::retrieveWindow(v8::Context::GetEntered());
}

Frame* State<V8Binding>::activeFrame()
{
    Frame* frame = V8Proxy::retrieveFrameForCallingContext();
    if (!frame) {
        // Unfortunately, when processing script from a plug-in, we might not
        // have a calling context.  In those cases, we fall back to the
        // entered context for security checks.
        // FIXME: We need a better API for retrieving frames that abstracts
        //        away this concern.
        frame = V8Proxy::retrieveFrameForEnteredContext();
    }
    return frame;
}

Frame* State<V8Binding>::firstFrame()
{
    return V8Proxy::retrieveFrameForEnteredContext();
}

void State<V8Binding>::immediatelyReportUnsafeAccessTo(Frame* target)
{
    V8Proxy::reportUnsafeAccessTo(target);
}

bool State<V8Binding>::processingUserGesture()
{
    return ScriptController::processingUserGesture();
}

bool State<V8Binding>::allowsAccessFromFrame(Frame* frame)
{
    return ScriptController::isSafeScript(frame);
}

} // namespace WebCore