/*

 * Copyright (C) 2007, 2008 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 COMPUTER, 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 COMPUTER, 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 "WebKitCSSKeyframeRule.h"

#include "CSSMutableStyleDeclaration.h"

namespace WebCore {

WebKitCSSKeyframeRule::WebKitCSSKeyframeRule(CSSStyleSheet* parent)

    : CSSRule(parent)

{

}

WebKitCSSKeyframeRule::~WebKitCSSKeyframeRule()

{

    if (m_style)

        m_style->setParent(0);

}

String WebKitCSSKeyframeRule::cssText() const

{

    String result = m_key;

    result += " { ";

    result += m_style->cssText();

    result += "}";

    return result;

}

bool WebKitCSSKeyframeRule::parseString(const String& /*string*/, bool /*strict*/)

{

    // FIXME

    return false;

}

void WebKitCSSKeyframeRule::setDeclaration(PassRefPtr<CSSMutableStyleDeclaration> style)

{

    m_style = style;

    m_style->setParent(parent());

}

/* static */

void WebKitCSSKeyframeRule::parseKeyString(const String& s, Vector<float>& keys)

{

    keys.clear();

    Vector<String> strings;

    s.split(',', strings);

    for (size_t i = 0; i < strings.size(); ++i) {

        float key = -1;

        String cur = strings[i].stripWhiteSpace();

        // For now the syntax MUST be 'xxx%' or 'from' or 'to', where xxx is a legal floating point number

        if (cur == "from")

            key = 0;

        else if (cur == "to")

            key = 1;

        else if (cur.endsWith("%")) {

            float k = cur.substring(0, cur.length() - 1).toFloat();

            if (k >= 0 && k <= 100)

                key = k/100;

        }

        if (key < 0) {

            keys.clear();

            return;

        }

        else

            keys.append(key);

    }

}

} // namespace WebCore