Source/WebCore/html/canvas/WebGLContextObject.cpp

/*
 * Copyright (C) 2011 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "WebGLContextObject.h"

#if ENABLE(WEBGL)

#include "WebGLRenderingContextBase.h"
#include <wtf/Lock.h>

namespace WebCore {

WebGLContextObject::WebGLContextObject(WebGLRenderingContextBase& context)
    : m_context(&context)
{
}

WebGLContextObject::~WebGLContextObject()
{
    if (m_context)
        m_context->removeContextObject(*this);
}

void WebGLContextObject::detachContext(const AbstractLocker& locker)
{
    detach();
    if (m_context) {
        deleteObject(locker, m_context->graphicsContextGL());
        m_context->removeContextObject(*this);
        m_context = nullptr;
    }
}

Lock& WebGLContextObject::objectGraphLockForContext()
{
    // Should not call this if the object or context has been deleted.
    ASSERT(m_context);
    return m_context->objectGraphLock();
}

GraphicsContextGL* WebGLContextObject::getAGraphicsContextGL() const
{
    return m_context ? m_context->graphicsContextGL() : nullptr;
}

}

#endif // ENABLE(WEBGL)