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/*
* CSS Media Query
*
* Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
*
* 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 AUTHOR ``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 "MediaQueryExp.h"
#include "CSSParser.h"
#include "CSSPrimitiveValue.h"
#include "CSSValueList.h"
#include <wtf/text/StringBuilder.h>
namespace WebCore {
inline MediaQueryExp::MediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* valueList)
: m_mediaFeature(mediaFeature)
, m_value(0)
, m_isValid(true)
{
if (valueList) {
if (valueList->size() == 1) {
CSSParserValue* value = valueList->current();
if (value->id != 0)
m_value = CSSPrimitiveValue::createIdentifier(value->id);
else if (value->unit == CSSPrimitiveValue::CSS_STRING)
m_value = CSSPrimitiveValue::create(value->string, (CSSPrimitiveValue::UnitTypes) value->unit);
else if (value->unit >= CSSPrimitiveValue::CSS_NUMBER &&
value->unit <= CSSPrimitiveValue::CSS_KHZ)
m_value = CSSPrimitiveValue::create(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
valueList->next();
} else if (valueList->size() > 1) {
// create list of values
// currently accepts only <integer>/<integer>
RefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
CSSParserValue* value = 0;
bool isValid = true;
while ((value = valueList->current()) && isValid) {
if (value->unit == CSSParserValue::Operator && value->iValue == '/')
list->append(CSSPrimitiveValue::create("/", CSSPrimitiveValue::CSS_STRING));
else if (value->unit == CSSPrimitiveValue::CSS_NUMBER)
list->append(CSSPrimitiveValue::create(value->fValue, CSSPrimitiveValue::CSS_NUMBER));
else
isValid = false;
value = valueList->next();
}
if (isValid)
m_value = list.release();
}
m_isValid = m_value;
}
}
PassOwnPtr<MediaQueryExp> MediaQueryExp::create(const AtomicString& mediaFeature, CSSParserValueList* values)
{
return adoptPtr(new MediaQueryExp(mediaFeature, values));
}
MediaQueryExp::~MediaQueryExp()
{
}
String MediaQueryExp::serialize() const
{
if (!m_serializationCache.isNull())
return m_serializationCache;
StringBuilder result;
result.append("(");
result.append(m_mediaFeature.lower());
if (m_value) {
result.append(": ");
result.append(m_value->cssText());
}
result.append(")");
const_cast<MediaQueryExp*>(this)->m_serializationCache = result.toString();
return m_serializationCache;
}
} // namespace
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