/*!
 * This file is a part of Mibew Messenger.
 *
 * Copyright 2005-2017 the original author or authors.
 *
 * 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.
 */

(function($, document) {
    var isPopupOpened = false;

    var loadPopup = function(){
        if(!isPopupOpened){
            $("#background-popup").css({
                "opacity": "0.7"
            });
            $("#background-popup").fadeIn("slow");
            $("#dashboard-locales-popup").fadeIn("slow");
            isPopupOpened = true;
        }
    }

    var disablePopup = function(){
        if(isPopupOpened){
            $("#background-popup").fadeOut("slow");
            $("#dashboard-locales-popup").fadeOut("slow");
            isPopupOpened = false;
        }
    }

    var normalizePosition = function(a) {
        if(a < 10) {
            return 10;
        }
        return a;
    }

    var centerPopup = function(){
        var windowWidth = document.documentElement.clientWidth;
        var windowHeight = document.documentElement.clientHeight;
        var popupHeight = $("#dashboard-locales-popup").height();
        var popupWidth = $("#dashboard-locales-popup").width();
        $("#dashboard-locales-popup").css({
            "position": "absolute",
            "top": normalizePosition((windowHeight-popupHeight) * 0.2),
            "left": normalizePosition(windowWidth/2-popupWidth/2)
        });
        $("#background-popup").css({
            "height": windowHeight
        });
    }

    $(function(){
        $("#change-language").on('click', function(){
            centerPopup();
            loadPopup();
            return false;
        });
        $("#dashboard-locales-popup-close").on('click', function(){
            disablePopup();
            return false;
        });
        $("#background-popup").on('click', function(){
            disablePopup();
        });
        $(document).keypress(function(e){
            if(e.keyCode == 27 && isPopupOpened){
                disablePopup();
            }
        });
    });
})(jQuery, document);
