ion.rangeSlider.js

// Ion.RangeSlider
// version 2.3.1 Build: 382
// © Denis Ineshin, 2019
// https://github.com/IonDen
//
// Project page:    http://ionden.com/a/plugins/ion.rangeSlider/en.html
// GitHub page:     https://github.com/IonDen/ion.rangeSlider
//
// Released under MIT licence:
// http://ionden.com/a/plugins/licence-en.html
// =====================================================================================================================

;(function(factory) {
    if ((typeof jQuery === 'undefined' || !jQuery) && typeof define === "function" && define.amd) {
        define(["jquery"], function (jQuery) {
            return factory(jQuery, document, window, navigator);
        });
    } else if ((typeof jQuery === 'undefined' || !jQuery) && typeof exports === "object") {
        factory(require("jquery"), document, window, navigator);
    } else {
        factory(jQuery, document, window, navigator);
    }
} (function ($, document, window, navigator, undefined) {
    "use strict";

    // =================================================================================================================
    // Service

    var plugin_count = 0;

    // IE8 fix
    var is_old_ie = (function () {
        var n = navigator.userAgent,
            r = /msie\s\d+/i,
            v;
        if (n.search(r) > 0) {
            v = r.exec(n).toString();
            v = v.split(" ")[1];
            if (v < 9) {
                $("html").addClass("lt-ie9");
                return true;
            }
        }
        return false;
    } ());
    if (!Function.prototype.bind) {
        Function.prototype.bind = function bind(that) {

            var target = this;
            var slice = [].slice;

            if (typeof target != "function") {
                throw new TypeError();
            }

            var args = slice.call(arguments, 1),
                bound = function () {

                    if (this instanceof bound) {

                        var F = function(){};
                        F.prototype = target.prototype;
                        var self = new F();

                        var result = target.apply(
                            self,
                            args.concat(slice.call(arguments))
                        );
                        if (Object(result) === result) {
                            return result;
                        }
                        return self;

                    } else {

                        return target.apply(
                            that,
                            args.concat(slice.call(arguments))
                        );

                    }

                };

            return bound;
        };
    }
    if (!Array.prototype.indexOf) {
        Array.prototype.indexOf = function(searchElement, fromIndex) {
            var k;
            if (this == null) {
                throw new TypeError('"this" is null or not defined');
            }
            var O = Object(this);
            var len = O.length >>> 0;
            if (len === 0) {
                return -1;
            }
            var n = +fromIndex || 0;
            if (Math.abs(n) === Infinity) {
                n = 0;
            }
            if (n >= len) {
                return -1;
            }
            k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
            while (k < len) {
                if (k in O && O[k] === searchElement) {
                    return k;
                }
                k++;
            }
            return -1;
        };
    }



    // =================================================================================================================
    // Template

    var base_html =
        '<span class="irs">' +
        '<span class="irs-line" tabindex="0"></span>' +
        '<span class="irs-min">0</span><span class="irs-max">1</span>' +
        '<span class="irs-from">0</span><span class="irs-to">0</span><span class="irs-single">0</span>' +
        '</span>' +
        '<span class="irs-grid"></span>';

    var single_html =
        '<span class="irs-bar irs-bar--single"></span>' +
        '<span class="irs-shadow shadow-single"></span>' +
        '<span class="irs-handle single"><i></i><i></i><i></i></span>';

    var double_html =
        '<span class="irs-bar"></span>' +
        '<span class="irs-shadow shadow-from"></span>' +
        '<span class="irs-shadow shadow-to"></span>' +
        '<span class="irs-handle from"><i></i><i></i><i></i></span>' +
        '<span class="irs-handle to"><i></i><i></i><i></i></span>';

    var disable_html =
        '<span class="irs-disable-mask"></span>';



    // =================================================================================================================
    // Core

    /**
     * Main plugin constructor
     *
     * @param input {Object} link to base input element
     * @param options {Object} slider config
     * @param plugin_count {Number}
     * @constructor
     */
    var IonRangeSlider = function (input, options, plugin_count) {
        this.VERSION = "2.3.1";
        this.input = input;
        this.plugin_count = plugin_count;
        this.current_plugin = 0;
        this.calc_count = 0;
        this.update_tm = 0;
        this.old_from = 0;
        this.old_to = 0;
        this.old_min_interval = null;
        this.raf_id = null;
        this.dragging = false;
        this.force_redraw = false;
        this.no_diapason = false;
        this.has_tab_index = true;
        this.is_key = false;
        this.is_update = false;
        this.is_start = true;
        this.is_finish = false;
        this.is_active = false;
        this.is_resize = false;
        this.is_click = false;

        options = options || {};

        // cache for links to all DOM elements
        this.$cache = {
            win: $(window),
            body: $(document.body),
            input: $(input),
            cont: null,
            rs: null,
            min: null,
            max: null,
            from: null,
            to: null,
            single: null,
            bar: null,
            line: null,
            s_single: null,
            s_from: null,
            s_to: null,
            shad_single: null,