src/cobalt/dom/media_query_list.cc

/*
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "cobalt/dom/media_query_list.h"

#include <limits>

#include "cobalt/cssom/css_parser.h"
#include "cobalt/cssom/media_query.h"
#include "cobalt/math/safe_integer_conversions.h"
#include "cobalt/math/size.h"

namespace cobalt {
namespace dom {

MediaQueryList::MediaQueryList(
    const scoped_refptr<cssom::MediaList>& media_list,
    const scoped_refptr<Screen>& screen)
    : media_list_(media_list), screen_(screen) {}

std::string MediaQueryList::media() const {
  return media_list_ ? media_list_->media_text() : std::string();
}

bool MediaQueryList::matches() const {
  if (!media_list_ || !screen_) {
    return false;
  }
  return media_list_->EvaluateConditionValue(
      math::Size(math::ToRoundedInt(screen_->avail_width()),
                 math::ToRoundedInt(screen_->avail_height())));
}

MediaQueryList::~MediaQueryList() {}

}  // namespace dom
}  // namespace cobalt