Source/bindings/v8/BindingState.cpp

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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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
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 */

#include "config.h"
#include "bindings/v8/BindingState.h"

#include "bindings/v8/ScriptController.h"
#include "bindings/v8/V8Binding.h"
#include "core/page/DOMWindow.h"
#include "core/page/Frame.h"
#include "wtf/StdLibExtras.h"

namespace WebCore {

BindingState* BindingState::instance()
{
    DEFINE_STATIC_LOCAL(BindingState, bindingStateForV8, ());
    return &bindingStateForV8;
}

static v8::Handle<v8::Context> activeContext()
{
    v8::Handle<v8::Context> context = v8::Context::GetCalling();
    if (!context.IsEmpty())
        return context;
    // 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.
    return v8::Context::GetEntered();
}

DOMWindow* activeDOMWindow(BindingState*)
{
    return toDOMWindow(activeContext());
}

DOMWindow* firstDOMWindow(BindingState*)
{
    return toDOMWindow(v8::Context::GetEntered());
}

Document* currentDocument(BindingState*)
{
    return toDOMWindow(v8::Context::GetCurrent())->document();
}

void printErrorMessageForFrame(Frame* frame, const String& message)
{
    if (!frame)
        return;
    frame->document()->domWindow()->printErrorMessage(message);
}

}