document.js

//
//  document.js
//  DuckDuckGo
//
//  Copyright © 2017 DuckDuckGo. 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.
//


var duckduckgoDocument = function () {
    
    getHrefFromPoint = function(x, y) {
        var element = document.elementFromPoint(x, y);
        while (element && !element.href) {
            element = element.parentNode
        }
        return getHrefFromElement(element)
    };
    
    getHrefFromElement = function(element) {
        if (element) {
            return element.href
        }
        return null
    };
    
    return {
        getHrefFromPoint: getHrefFromPoint,
        getHrefFromElement: getHrefFromElement
    };
    
}();