Source/WebCore/css/WebKitCSSShaderValue.h

/*
 * Copyright (C) 2011 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER 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
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 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 */

#ifndef WebKitCSSShaderValue_h
#define WebKitCSSShaderValue_h

#if ENABLE(CSS_SHADERS)

#include "CSSValue.h"

namespace WebCore {

class CachedResourceLoader;
class KURL;
class StyleCachedShader;
class StyleShader;

class WebKitCSSShaderValue : public CSSValue {
public:
    static PassRefPtr<WebKitCSSShaderValue> create(const String& url) { return adoptRef(new WebKitCSSShaderValue(url)); }
    ~WebKitCSSShaderValue();

    const String& format() const { return m_format; }
    void setFormat(const String& format) { m_format = format; }

    KURL completeURL(CachedResourceLoader*) const;
    StyleCachedShader* cachedShader(CachedResourceLoader*);
    StyleShader* cachedOrPendingShader();

    String customCssText() const;

    bool equals(const WebKitCSSShaderValue&) const;

private:
    WebKitCSSShaderValue(const String& url);

    String m_url;
    String m_format;
    RefPtr<StyleShader> m_shader;
    bool m_accessedShader;
};

// This will catch anyone doing an unnecessary cast.
WebKitCSSShaderValue* toWebKitCSSShaderValue(const WebKitCSSShaderValue*);

inline WebKitCSSShaderValue* toWebKitCSSShaderValue(CSSValue* value)
{
    return value->isWebKitCSSShaderValue() ? static_cast<WebKitCSSShaderValue*>(value) : 0;
}

} // namespace WebCore

#endif // ENABLE(CSS_SHADERS)

#endif // WebKitCSSShaderValue_h