/*

 * 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 "CSSParser.h"

#include "WebKitCSSKeyframesRule.h"

#include "WebKitCSSKeyframeRule.h"

#include "CSSRuleList.h"

#include "StyleSheet.h"

namespace WebCore {

WebKitCSSKeyframesRule::WebKitCSSKeyframesRule(CSSStyleSheet* parent)

    : CSSRule(parent)

    , m_lstCSSRules(CSSRuleList::create())

{

}

WebKitCSSKeyframesRule::~WebKitCSSKeyframesRule()

{

    int length = m_lstCSSRules->length();

    if (length == 0)

        return;

    for (int i = 0; i < length; i++)

        m_lstCSSRules->item(i)->setParent(0);

}

String WebKitCSSKeyframesRule::name() const

{

    return m_name;

}

void WebKitCSSKeyframesRule::setName(const String& name)

{

    m_name = name;

    // Since the name is used in the keyframe map list in CSSStyleSelector, we need

    // to recompute the style sheet to get the updated name.

    stylesheet()->styleSheetChanged();

}

unsigned WebKitCSSKeyframesRule::length() const

{

    return m_lstCSSRules.get()->length();

}

WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index)

{

    CSSRule* rule = m_lstCSSRules.get()->item(index);

    return (rule && rule->isKeyframeRule()) ? static_cast<WebKitCSSKeyframeRule*>(rule) : 0;

}

const WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index) const

{

    CSSRule* rule = m_lstCSSRules.get()->item(index);

    return (rule && rule->isKeyframeRule()) ? static_cast<const WebKitCSSKeyframeRule*>(rule) : 0;

}

void WebKitCSSKeyframesRule::append(WebKitCSSKeyframeRule* rule)

{

    m_lstCSSRules.get()->append(rule);

}

void WebKitCSSKeyframesRule::insertRule(const String& rule)

{

    CSSParser p(useStrictParsing());

    RefPtr<CSSRule> newRule = p.parseKeyframeRule(parentStyleSheet(), rule);

    if (newRule.get() && newRule.get()->isKeyframeRule())

        append(static_cast<WebKitCSSKeyframeRule*>(newRule.get()));

}

void WebKitCSSKeyframesRule::deleteRule(const String& s)

{

    int i = findRuleIndex(s);

    if (i >= 0)

        m_lstCSSRules.get()->deleteRule(i);

}

WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::findRule(const String& s)

{

    int i = findRuleIndex(s);

    return (i >= 0) ? item(i) : 0;

}

int WebKitCSSKeyframesRule::findRuleIndex(const String& key) const

{

    String percentageString;

    if (equalIgnoringCase(key, "from"))

        percentageString = "0%";

    else if (equalIgnoringCase(key, "to"))

        percentageString = "100%";

    else

        percentageString = key;

    for (unsigned i = 0; i < length(); ++i) {

        if (item(i)->keyText() == percentageString)

            return i;

    }

    return -1;

}

String WebKitCSSKeyframesRule::cssText() const

{

    String result = "@-webkit-keyframes ";

    result += m_name;

    result += " { \n";

    if (m_lstCSSRules) {

        unsigned len = m_lstCSSRules->length();

        for (unsigned i = 0; i < len; i++) {

            result += "  ";

            result += m_lstCSSRules->item(i)->cssText();

            result += "\n";

        }

    }

    result += "}";

    return result;

}

} // namespace WebCore