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✏️ Editing: ion.rangeSlider.js

// Ion.RangeSlider
// version 2.1.4 Build: 355
// © Denis Ineshin, 2016
// 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
// =====================================================================================================================

// =================================================================================================================
    // 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 =
 '' +
 '' +
 '01' +
 '000' +
 '' +
 '' +
 '';

var single_html =
 '' +
 '' +
 '';

var double_html =
 '' +
 '' +
 '' +
 '';

var disable_html =
 '';

// =================================================================================================================
    // 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 = "2.1.4";
        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.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;

// 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,
            shad_from: null,
            shad_to: null,
            edge: null,
            grid: null,
            grid_labels: []
        };

// storage for measure variables
        this.coords = {
            // left
            x_gap: 0,
            x_pointer: 0,

// width
            w_rs: 0,
            w_rs_old: 0,
            w_handle: 0,

// percents
            p_gap: 0,
            p_gap_left: 0,
            p_gap_right: 0,
            p_step: 0,
            p_pointer: 0,
            p_handle: 0,
            p_single_fake: 0,
            p_single_real: 0,
            p_from_fake: 0,
            p_from_real: 0,
            p_to_fake: 0,
            p_to_real: 0,
            p_bar_x: 0,
            p_bar_w: 0,

// grid
            grid_gap: 0,
            big_num: 0,
            big: [],
            big_w: [],
            big_p: [],
            big_x: []
        };

// storage for labels measure variables
        this.labels = {
            // width
            w_min: 0,
            w_max: 0,
            w_from: 0,
            w_to: 0,
            w_single: 0,

// percents
            p_min: 0,
            p_max: 0,
            p_from_fake: 0,
            p_from_left: 0,
            p_to_fake: 0,
            p_to_left: 0,
            p_single_fake: 0,
            p_single_left: 0
        };

/**
         * get and validate config
         */
        var $inp = this.$cache.input,
            val = $inp.prop("value"),
            config, config_from_data, prop;

// default config
        config = {
            type: "single",

min: 10,
            max: 100,
            from: null,
            to: null,
            step: 1,

min_interval: 0,
            max_interval: 0,
            drag_interval: false,

values: [],
            p_values: [],

from_fixed: false,
            from_min: null,
            from_max: null,
            from_shadow: false,

to_fixed: false,
            to_min: null,
            to_max: null,
            to_shadow: false,

prettify_enabled: true,
            prettify_separator: " ",
            prettify: null,

force_edges: false,

keyboard: false,
            keyboard_step: 5,

grid: false,
            grid_margin: true,
            grid_num: 4,
            grid_snap: false,

hide_min_max: false,
            hide_from_to: false,

prefix: "",
            postfix: "",
            max_postfix: "",
            decorate_both: true,
            values_separator: " — ",

input_values_separator: ";",

disable: false,

onStart: null,
            onChange: null,
            onFinish: null,
            onUpdate: null
        };

// config from data-attributes extends js config
        config_from_data = {
            type: $inp.data("type"),

min: $inp.data("min"),
            max: $inp.data("max"),
            from: $inp.data("from"),
            to: $inp.data("to"),
            step: $inp.data("step"),

min_interval: $inp.data("minInterval"),
            max_interval: $inp.data("maxInterval"),
            drag_interval: $inp.data("dragInterval"),

values: $inp.data("values"),

from_fixed: $inp.data("fromFixed"),
            from_min: $inp.data("fromMin"),
            from_max: $inp.data("fromMax"),
            from_shadow: $inp.data("fromShadow"),

to_fixed: $inp.data("toFixed"),
            to_min: $inp.data("toMin"),
            to_max: $inp.data("toMax"),
            to_shadow: $inp.data("toShadow"),

prettify_enabled: $inp.data("prettifyEnabled"),
            prettify_separator: $inp.data("prettifySeparator"),

force_edges: $inp.data("forceEdges"),

keyboard: $inp.data("keyboard"),
            keyboard_step: $inp.data("keyboardStep"),

grid: $inp.data("grid"),
            grid_margin: $inp.data("gridMargin"),
            grid_num: $inp.data("gridNum"),
            grid_snap: $inp.data("gridSnap"),

hide_min_max: $inp.data("hideMinMax"),
            hide_from_to: $inp.data("hideFromTo"),

prefix: $inp.data("prefix"),
            postfix: $inp.data("postfix"),
            max_postfix: $inp.data("maxPostfix"),
            decorate_both: $inp.data("decorateBoth"),
            values_separator: $inp.data("valuesSeparator"),

input_values_separator: $inp.data("inputValuesSeparator"),

disable: $inp.data("disable")
        };
        config_from_data.values = config_from_data.values && config_from_data.values.split(",");

for (prop in config_from_data) {
            if (config_from_data.hasOwnProperty(prop)) {
                if (!config_from_data[prop] && config_from_data[prop] !== 0) {
                    delete config_from_data[prop];
                }
            }
        }

// input value extends default config
        if (val) {
            val = val.split(config_from_data.input_values_separator || options.input_values_separator || ";");

if (val[0] && val[0] == +val[0]) {
                val[0] = +val[0];
            }
            if (val[1] && val[1] == +val[1]) {
                val[1] = +val[1];
            }

if (options && options.values && options.values.length) {
                config.from = val[0] && options.values.indexOf(val[0]);
                config.to = val[1] && options.values.indexOf(val[1]);
            } else {
                config.from = val[0] && +val[0];
                config.to = val[1] && +val[1];
            }
        }

// js config extends default config
        $.extend(config, options);

// data config extends config
        $.extend(config, config_from_data);
        this.options = config;

// validate config, to be sure that all data types are correct
        this.validate();

// default result object, returned to callbacks
        this.result = {
            input: this.$cache.input,
            slider: null,

min: this.options.min,
            max: this.options.max,

from: this.options.from,
            from_percent: 0,
            from_value: null,

to: this.options.to,
            to_percent: 0,
            to_value: null
        };

this.init();
    };

IonRangeSlider.prototype = {

/**
         * Starts or updates the plugin instance
         *
         * @param is_update {boolean}
         */
        init: function (is_update) {
            this.no_diapason = false;
            this.coords.p_step = this.convertToPercent(this.options.step, true);

this.target = "base";

this.toggleInput();
            this.append();
            this.setMinMax();

if (is_update) {
                this.force_redraw = true;
                this.calc(true);

// callbacks called
                this.callOnUpdate();
            } else {
                this.force_redraw = true;
                this.calc(true);

// callbacks called
                this.callOnStart();
            }

this.updateScene();
        },

/**
 * Appends slider template to a DOM
 */
 append: function () {
 var container_html = '';
 this.$cache.input.before(container_html);
 this.$cache.input.prop("readonly", true);
 this.$cache.cont = this.$cache.input.prev();
 this.result.slider = this.$cache.cont;

this.$cache.cont.html(base_html);
            this.$cache.rs = this.$cache.cont.find(".irs");
            this.$cache.min = this.$cache.cont.find(".irs-min");
            this.$cache.max = this.$cache.cont.find(".irs-max");
            this.$cache.from = this.$cache.cont.find(".irs-from");
            this.$cache.to = this.$cache.cont.find(".irs-to");
            this.$cache.single = this.$cache.cont.find(".irs-single");
            this.$cache.bar = this.$cache.cont.find(".irs-bar");
            this.$cache.line = this.$cache.cont.find(".irs-line");
            this.$cache.grid = this.$cache.cont.find(".irs-grid");

if (this.options.type === "single") {
                this.$cache.cont.append(single_html);
                this.$cache.edge = this.$cache.cont.find(".irs-bar-edge");
                this.$cache.s_single = this.$cache.cont.find(".single");
                this.$cache.from[0].style.visibility = "hidden";
                this.$cache.to[0].style.visibility = "hidden";
                this.$cache.shad_single = this.$cache.cont.find(".shadow-single");
            } else {
                this.$cache.cont.append(double_html);
                this.$cache.s_from = this.$cache.cont.find(".from");
                this.$cache.s_to = this.$cache.cont.find(".to");
                this.$cache.shad_from = this.$cache.cont.find(".shadow-from");
                this.$cache.shad_to = this.$cache.cont.find(".shadow-to");

this.setTopHandler();
            }

if (this.options.hide_from_to) {
                this.$cache.from[0].style.display = "none";
                this.$cache.to[0].style.display = "none";
                this.$cache.single[0].style.display = "none";
            }

this.appendGrid();

if (this.options.disable) {
                this.appendDisableMask();
                this.$cache.input[0].disabled = true;
            } else {
                this.$cache.cont.removeClass("irs-disabled");
                this.$cache.input[0].disabled = false;
                this.bindEvents();
            }

if (this.options.drag_interval) {
                this.$cache.bar[0].style.cursor = "ew-resize";
            }
        },

/**
         * Determine which handler has a priority
         * works only for double slider type
         */
        setTopHandler: function () {
            var min = this.options.min,
                max = this.options.max,
                from = this.options.from,
                to = this.options.to;

if (from > min && to === max) {
 this.$cache.s_from.addClass("type_last");
 } else if (to < max) {
 this.$cache.s_to.addClass("type_last");
 }
 },

/**
         * Determine which handles was clicked last
         * and which handler should have hover effect
         *
         * @param target {String}
         */
        changeLevel: function (target) {
            switch (target) {
                case "single":
                    this.coords.p_gap = this.toFixed(this.coords.p_pointer - this.coords.p_single_fake);
                    break;
                case "from":
                    this.coords.p_gap = this.toFixed(this.coords.p_pointer - this.coords.p_from_fake);
                    this.$cache.s_from.addClass("state_hover");
                    this.$cache.s_from.addClass("type_last");
                    this.$cache.s_to.removeClass("type_last");
                    break;
                case "to":
                    this.coords.p_gap = this.toFixed(this.coords.p_pointer - this.coords.p_to_fake);
                    this.$cache.s_to.addClass("state_hover");
                    this.$cache.s_to.addClass("type_last");
                    this.$cache.s_from.removeClass("type_last");
                    break;
                case "both":
                    this.coords.p_gap_left = this.toFixed(this.coords.p_pointer - this.coords.p_from_fake);
                    this.coords.p_gap_right = this.toFixed(this.coords.p_to_fake - this.coords.p_pointer);
                    this.$cache.s_to.removeClass("type_last");
                    this.$cache.s_from.removeClass("type_last");
                    break;
            }
        },

/**
         * Then slider is disabled
         * appends extra layer with opacity
         */
        appendDisableMask: function () {
            this.$cache.cont.append(disable_html);
            this.$cache.cont.addClass("irs-disabled");
        },

/**
         * Remove slider instance
         * and ubind all events
         */
        remove: function () {
            this.$cache.cont.remove();
            this.$cache.cont = null;

this.$cache.line.off("keydown.irs_" + this.plugin_count);

this.$cache.body.off("touchmove.irs_" + this.plugin_count);
            this.$cache.body.off("mousemove.irs_" + this.plugin_count);

this.$cache.win.off("touchend.irs_" + this.plugin_count);
            this.$cache.win.off("mouseup.irs_" + this.plugin_count);

if (is_old_ie) {
                this.$cache.body.off("mouseup.irs_" + this.plugin_count);
                this.$cache.body.off("mouseleave.irs_" + this.plugin_count);
            }

this.$cache.grid_labels = [];
            this.coords.big = [];
            this.coords.big_w = [];
            this.coords.big_p = [];
            this.coords.big_x = [];

cancelAnimationFrame(this.raf_id);
        },

/**
         * bind all slider events
         */
        bindEvents: function () {
            if (this.no_diapason) {
                return;
            }

this.$cache.body.on("touchmove.irs_" + this.plugin_count, this.pointerMove.bind(this));
            this.$cache.body.on("mousemove.irs_" + this.plugin_count, this.pointerMove.bind(this));

this.$cache.win.on("touchend.irs_" + this.plugin_count, this.pointerUp.bind(this));
            this.$cache.win.on("mouseup.irs_" + this.plugin_count, this.pointerUp.bind(this));

this.$cache.line.on("touchstart.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
            this.$cache.line.on("mousedown.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));

if (this.options.drag_interval && this.options.type === "double") {
                this.$cache.bar.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, "both"));
                this.$cache.bar.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, "both"));
            } else {
                this.$cache.bar.on("touchstart.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
                this.$cache.bar.on("mousedown.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
            }

if (this.options.type === "single") {
                this.$cache.single.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, "single"));
                this.$cache.s_single.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, "single"));
                this.$cache.shad_single.on("touchstart.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));

this.$cache.single.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, "single"));
                this.$cache.s_single.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, "single"));
                this.$cache.edge.on("mousedown.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
                this.$cache.shad_single.on("mousedown.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
            } else {
                this.$cache.single.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, null));
                this.$cache.single.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, null));

this.$cache.from.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, "from"));
                this.$cache.s_from.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, "from"));
                this.$cache.to.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, "to"));
                this.$cache.s_to.on("touchstart.irs_" + this.plugin_count, this.pointerDown.bind(this, "to"));
                this.$cache.shad_from.on("touchstart.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
                this.$cache.shad_to.on("touchstart.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));

this.$cache.from.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, "from"));
                this.$cache.s_from.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, "from"));
                this.$cache.to.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, "to"));
                this.$cache.s_to.on("mousedown.irs_" + this.plugin_count, this.pointerDown.bind(this, "to"));
                this.$cache.shad_from.on("mousedown.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
                this.$cache.shad_to.on("mousedown.irs_" + this.plugin_count, this.pointerClick.bind(this, "click"));
            }

if (this.options.keyboard) {
                this.$cache.line.on("keydown.irs_" + this.plugin_count, this.key.bind(this, "keyboard"));
            }

if (is_old_ie) {
                this.$cache.body.on("mouseup.irs_" + this.plugin_count, this.pointerUp.bind(this));
                this.$cache.body.on("mouseleave.irs_" + this.plugin_count, this.pointerUp.bind(this));
            }
        },

/**
         * Mousemove or touchmove
         * only for handlers
         *
         * @param e {Object} event object
         */
        pointerMove: function (e) {
            if (!this.dragging) {
                return;
            }

var x = e.pageX || e.originalEvent.touches && e.originalEvent.touches[0].pageX;
            this.coords.x_pointer = x - this.coords.x_gap;

this.calc();
        },

/**
         * Mouseup or touchend
         * only for handlers
         *
         * @param e {Object} event object
         */
        pointerUp: function (e) {
            if (this.current_plugin !== this.plugin_count) {
                return;
            }

if (this.is_active) {
                this.is_active = false;
            } else {
                return;
            }

this.$cache.cont.find(".state_hover").removeClass("state_hover");

this.force_redraw = true;

if (is_old_ie) {
                $("*").prop("unselectable", false);
            }

this.updateScene();
            this.restoreOriginalMinInterval();

// callbacks call
            if ($.contains(this.$cache.cont[0], e.target) || this.dragging) {
                this.is_finish = true;
                this.callOnFinish();
            }
            
            this.dragging = false;
        },

/**
         * Mousedown or touchstart
         * only for handlers
         *
         * @param target {String|null}
         * @param e {Object} event object
         */
        pointerDown: function (target, e) {
            e.preventDefault();
            var x = e.pageX || e.originalEvent.touches && e.originalEvent.touches[0].pageX;
            if (e.button === 2) {
                return;
            }

if (target === "both") {
                this.setTempMinInterval();
            }

if (!target) {
                target = this.target;
            }

this.current_plugin = this.plugin_count;
            this.target = target;

this.is_active = true;
            this.dragging = true;

this.coords.x_gap = this.$cache.rs.offset().left;
            this.coords.x_pointer = x - this.coords.x_gap;

this.calcPointerPercent();
            this.changeLevel(target);

if (is_old_ie) {
                $("*").prop("unselectable", true);
            }

this.$cache.line.trigger("focus");

this.updateScene();
        },

/**
         * Mousedown or touchstart
         * for other slider elements, like diapason line
         *
         * @param target {String}
         * @param e {Object} event object
         */
        pointerClick: function (target, e) {
            e.preventDefault();
            var x = e.pageX || e.originalEvent.touches && e.originalEvent.touches[0].pageX;
            if (e.button === 2) {
                return;
            }

this.current_plugin = this.plugin_count;
            this.target = target;

this.is_click = true;
            this.coords.x_gap = this.$cache.rs.offset().left;
            this.coords.x_pointer = +(x - this.coords.x_gap).toFixed();

this.force_redraw = true;
            this.calc();

this.$cache.line.trigger("focus");
        },

/**
         * Keyborard controls for focused slider
         *
         * @param target {String}
         * @param e {Object} event object
         * @returns {boolean|undefined}
         */
        key: function (target, e) {
            if (this.current_plugin !== this.plugin_count || e.altKey || e.ctrlKey || e.shiftKey || e.metaKey) {
                return;
            }

switch (e.which) {
                case 83: // W
                case 65: // A
                case 40: // DOWN
                case 37: // LEFT
                    e.preventDefault();
                    this.moveByKey(false);
                    break;

case 87: // S
                case 68: // D
                case 38: // UP
                case 39: // RIGHT
                    e.preventDefault();
                    this.moveByKey(true);
                    break;
            }

return true;
        },

/**
         * Move by key. Beta
         * @todo refactor than have plenty of time
         *
         * @param right {boolean} direction to move
         */
        moveByKey: function (right) {
            var p = this.coords.p_pointer;

if (right) {
                p += this.options.keyboard_step;
            } else {
                p -= this.options.keyboard_step;
            }

this.coords.x_pointer = this.toFixed(this.coords.w_rs / 100 * p);
            this.is_key = true;
            this.calc();
        },

/**
         * Set visibility and content
         * of Min and Max labels
         */
        setMinMax: function () {
            if (!this.options) {
                return;
            }

if (this.options.hide_min_max) {
                this.$cache.min[0].style.display = "none";
                this.$cache.max[0].style.display = "none";
                return;
            }

if (this.options.values.length) {
                this.$cache.min.html(this.decorate(this.options.p_values[this.options.min]));
                this.$cache.max.html(this.decorate(this.options.p_values[this.options.max]));
            } else {
                this.$cache.min.html(this.decorate(this._prettify(this.options.min), this.options.min));
                this.$cache.max.html(this.decorate(this._prettify(this.options.max), this.options.max));
            }

this.labels.w_min = this.$cache.min.outerWidth(false);
            this.labels.w_max = this.$cache.max.outerWidth(false);
        },

/**
         * Then dragging interval, prevent interval collapsing
         * using min_interval option
         */
        setTempMinInterval: function () {
            var interval = this.result.to - this.result.from;

if (this.old_min_interval === null) {
                this.old_min_interval = this.options.min_interval;
            }

this.options.min_interval = interval;
        },

/**
         * Restore min_interval option to original
         */
        restoreOriginalMinInterval: function () {
            if (this.old_min_interval !== null) {
                this.options.min_interval = this.old_min_interval;
                this.old_min_interval = null;
            }
        },

// =============================================================================================================
        // Calculations

/**
         * All calculations and measures start here
         *
         * @param update {boolean=}
         */
        calc: function (update) {
            if (!this.options) {
                return;
            }

this.calc_count++;

if (this.calc_count === 10 || update) {
                this.calc_count = 0;
                this.coords.w_rs = this.$cache.rs.outerWidth(false);

this.calcHandlePercent();
            }

if (!this.coords.w_rs) {
                return;
            }

this.calcPointerPercent();
            var handle_x = this.getHandleX();

if (this.target === "click") {
                this.coords.p_gap = this.coords.p_handle / 2;
                handle_x = this.getHandleX();

if (this.options.drag_interval) {
                    this.target = "both_one";
                } else {
                    this.target = this.chooseHandle(handle_x);
                }
            }

switch (this.target) {
                case "base":
                    var w = (this.options.max - this.options.min) / 100,
                        f = (this.result.from - this.options.min) / w,
                        t = (this.result.to - this.options.min) / w;

this.coords.p_single_real = this.toFixed(f);
                    this.coords.p_from_real = this.toFixed(f);
                    this.coords.p_to_real = this.toFixed(t);

this.coords.p_single_real = this.checkDiapason(this.coords.p_single_real, this.options.from_min, this.options.from_max);
                    this.coords.p_from_real = this.checkDiapason(this.coords.p_from_real, this.options.from_min, this.options.from_max);
                    this.coords.p_to_real = this.checkDiapason(this.coords.p_to_real, this.options.to_min, this.options.to_max);

this.coords.p_single_fake = this.convertToFakePercent(this.coords.p_single_real);
                    this.coords.p_from_fake = this.convertToFakePercent(this.coords.p_from_real);
                    this.coords.p_to_fake = this.convertToFakePercent(this.coords.p_to_real);

this.target = null;

break;

case "single":
                    if (this.options.from_fixed) {
                        break;
                    }

this.coords.p_single_real = this.convertToRealPercent(handle_x);
                    this.coords.p_single_real = this.calcWithStep(this.coords.p_single_real);
                    this.coords.p_single_real = this.checkDiapason(this.coords.p_single_real, this.options.from_min, this.options.from_max);

this.coords.p_single_fake = this.convertToFakePercent(this.coords.p_single_real);

break;

case "from":
                    if (this.options.from_fixed) {
                        break;
                    }

this.coords.p_from_real = this.convertToRealPercent(handle_x);
                    this.coords.p_from_real = this.calcWithStep(this.coords.p_from_real);
                    if (this.coords.p_from_real > this.coords.p_to_real) {
                        this.coords.p_from_real = this.coords.p_to_real;
                    }
                    this.coords.p_from_real = this.checkDiapason(this.coords.p_from_real, this.options.from_min, this.options.from_max);
                    this.coords.p_from_real = this.checkMinInterval(this.coords.p_from_real, this.coords.p_to_real, "from");
                    this.coords.p_from_real = this.checkMaxInterval(this.coords.p_from_real, this.coords.p_to_real, "from");

this.coords.p_from_fake = this.convertToFakePercent(this.coords.p_from_real);

break;

case "to":
                    if (this.options.to_fixed) {
                        break;
                    }

this.coords.p_to_real = this.convertToRealPercent(handle_x);
 this.coords.p_to_real = this.calcWithStep(this.coords.p_to_real);
 if (this.coords.p_to_real < this.coords.p_from_real) {
 this.coords.p_to_real = this.coords.p_from_real;
 }
 this.coords.p_to_real = this.checkDiapason(this.coords.p_to_real, this.options.to_min, this.options.to_max);
 this.coords.p_to_real = this.checkMinInterval(this.coords.p_to_real, this.coords.p_from_real, "to");
 this.coords.p_to_real = this.checkMaxInterval(this.coords.p_to_real, this.coords.p_from_real, "to");

this.coords.p_to_fake = this.convertToFakePercent(this.coords.p_to_real);

break;

case "both":
                    if (this.options.from_fixed || this.options.to_fixed) {
                        break;
                    }

handle_x = this.toFixed(handle_x + (this.coords.p_handle * 0.1));

this.coords.p_from_real = this.convertToRealPercent(handle_x) - this.coords.p_gap_left;
                    this.coords.p_from_real = this.calcWithStep(this.coords.p_from_real);
                    this.coords.p_from_real = this.checkDiapason(this.coords.p_from_real, this.options.from_min, this.options.from_max);
                    this.coords.p_from_real = this.checkMinInterval(this.coords.p_from_real, this.coords.p_to_real, "from");
                    this.coords.p_from_fake = this.convertToFakePercent(this.coords.p_from_real);

this.coords.p_to_real = this.convertToRealPercent(handle_x) + this.coords.p_gap_right;
                    this.coords.p_to_real = this.calcWithStep(this.coords.p_to_real);
                    this.coords.p_to_real = this.checkDiapason(this.coords.p_to_real, this.options.to_min, this.options.to_max);
                    this.coords.p_to_real = this.checkMinInterval(this.coords.p_to_real, this.coords.p_from_real, "to");
                    this.coords.p_to_fake = this.convertToFakePercent(this.coords.p_to_real);

break;

case "both_one":
                    if (this.options.from_fixed || this.options.to_fixed) {
                        break;
                    }

var real_x = this.convertToRealPercent(handle_x),
                        from = this.result.from_percent,
                        to = this.result.to_percent,
                        full = to - from,
                        half = full / 2,
                        new_from = real_x - half,
                        new_to = real_x + half;

if (new_from < 0) {
 new_from = 0;
 new_to = new_from + full;
 }

if (new_to > 100) {
                        new_to = 100;
                        new_from = new_to - full;
                    }

this.coords.p_from_real = this.calcWithStep(new_from);
                    this.coords.p_from_real = this.checkDiapason(this.coords.p_from_real, this.options.from_min, this.options.from_max);
                    this.coords.p_from_fake = this.convertToFakePercent(this.coords.p_from_real);

this.coords.p_to_real = this.calcWithStep(new_to);
                    this.coords.p_to_real = this.checkDiapason(this.coords.p_to_real, this.options.to_min, this.options.to_max);
                    this.coords.p_to_fake = this.convertToFakePercent(this.coords.p_to_real);

break;
            }

if (this.options.type === "single") {
                this.coords.p_bar_x = (this.coords.p_handle / 2);
                this.coords.p_bar_w = this.coords.p_single_fake;

this.result.from_percent = this.coords.p_single_real;
                this.result.from = this.convertToValue(this.coords.p_single_real);

if (this.options.values.length) {
                    this.result.from_value = this.options.values[this.result.from];
                }
            } else {
                this.coords.p_bar_x = this.toFixed(this.coords.p_from_fake + (this.coords.p_handle / 2));
                this.coords.p_bar_w = this.toFixed(this.coords.p_to_fake - this.coords.p_from_fake);

this.result.from_percent = this.coords.p_from_real;
                this.result.from = this.convertToValue(this.coords.p_from_real);
                this.result.to_percent = this.coords.p_to_real;
                this.result.to = this.convertToValue(this.coords.p_to_real);

if (this.options.values.length) {
                    this.result.from_value = this.options.values[this.result.from];
                    this.result.to_value = this.options.values[this.result.to];
                }
            }

this.calcMinMax();
            this.calcLabels();
        },

/**
         * calculates pointer X in percent
         */
        calcPointerPercent: function () {
            if (!this.coords.w_rs) {
                this.coords.p_pointer = 0;
                return;
            }

if (this.coords.x_pointer < 0 || isNaN(this.coords.x_pointer) ) {
 this.coords.x_pointer = 0;
 } else if (this.coords.x_pointer > this.coords.w_rs) {
 this.coords.x_pointer = this.coords.w_rs;
 }

this.coords.p_pointer = this.toFixed(this.coords.x_pointer / this.coords.w_rs * 100);
        },

convertToRealPercent: function (fake) {
            var full = 100 - this.coords.p_handle;
            return fake / full * 100;
        },

convertToFakePercent: function (real) {
            var full = 100 - this.coords.p_handle;
            return real / 100 * full;
        },

getHandleX: function () {
            var max = 100 - this.coords.p_handle,
                x = this.toFixed(this.coords.p_pointer - this.coords.p_gap);

if (x < 0) {
 x = 0;
 } else if (x > max) {
 x = max;
 }

return x;
        },

calcHandlePercent: function () {
            if (this.options.type === "single") {
                this.coords.w_handle = this.$cache.s_single.outerWidth(false);
            } else {
                this.coords.w_handle = this.$cache.s_from.outerWidth(false);
            }

this.coords.p_handle = this.toFixed(this.coords.w_handle / this.coords.w_rs * 100);
        },

/**
         * Find closest handle to pointer click
         *
         * @param real_x {Number}
         * @returns {String}
         */
        chooseHandle: function (real_x) {
            if (this.options.type === "single") {
                return "single";
            } else {
                var m_point = this.coords.p_from_real + ((this.coords.p_to_real - this.coords.p_from_real) / 2);
                if (real_x >= m_point) {
                    return this.options.to_fixed ? "from" : "to";
                } else {
                    return this.options.from_fixed ? "to" : "from";
                }
            }
        },

/**
         * Measure Min and Max labels width in percent
         */
        calcMinMax: function () {
            if (!this.coords.w_rs) {
                return;
            }

this.labels.p_min = this.labels.w_min / this.coords.w_rs * 100;
            this.labels.p_max = this.labels.w_max / this.coords.w_rs * 100;
        },

/**
         * Measure labels width and X in percent
         */
        calcLabels: function () {
            if (!this.coords.w_rs || this.options.hide_from_to) {
                return;
            }

if (this.options.type === "single") {

this.labels.w_single = this.$cache.single.outerWidth(false);
                this.labels.p_single_fake = this.labels.w_single / this.coords.w_rs * 100;
                this.labels.p_single_left = this.coords.p_single_fake + (this.coords.p_handle / 2) - (this.labels.p_single_fake / 2);
                this.labels.p_single_left = this.checkEdges(this.labels.p_single_left, this.labels.p_single_fake);

} else {

this.labels.w_from = this.$cache.from.outerWidth(false);
                this.labels.p_from_fake = this.labels.w_from / this.coords.w_rs * 100;
                this.labels.p_from_left = this.coords.p_from_fake + (this.coords.p_handle / 2) - (this.labels.p_from_fake / 2);
                this.labels.p_from_left = this.toFixed(this.labels.p_from_left);
                this.labels.p_from_left = this.checkEdges(this.labels.p_from_left, this.labels.p_from_fake);

this.labels.w_to = this.$cache.to.outerWidth(false);
                this.labels.p_to_fake = this.labels.w_to / this.coords.w_rs * 100;
                this.labels.p_to_left = this.coords.p_to_fake + (this.coords.p_handle / 2) - (this.labels.p_to_fake / 2);
                this.labels.p_to_left = this.toFixed(this.labels.p_to_left);
                this.labels.p_to_left = this.checkEdges(this.labels.p_to_left, this.labels.p_to_fake);

this.labels.w_single = this.$cache.single.outerWidth(false);
                this.labels.p_single_fake = this.labels.w_single / this.coords.w_rs * 100;
                this.labels.p_single_left = ((this.labels.p_from_left + this.labels.p_to_left + this.labels.p_to_fake) / 2) - (this.labels.p_single_fake / 2);
                this.labels.p_single_left = this.toFixed(this.labels.p_single_left);
                this.labels.p_single_left = this.checkEdges(this.labels.p_single_left, this.labels.p_single_fake);

}
        },

// =============================================================================================================
        // Drawings

/**
         * Main function called in request animation frame
         * to update everything
         */
        updateScene: function () {
            if (this.raf_id) {
                cancelAnimationFrame(this.raf_id);
                this.raf_id = null;
            }

clearTimeout(this.update_tm);
            this.update_tm = null;

if (!this.options) {
                return;
            }

this.drawHandles();

if (this.is_active) {
                this.raf_id = requestAnimationFrame(this.updateScene.bind(this));
            } else {
                this.update_tm = setTimeout(this.updateScene.bind(this), 300);
            }
        },

/**
         * Draw handles
         */
        drawHandles: function () {
            this.coords.w_rs = this.$cache.rs.outerWidth(false);

if (!this.coords.w_rs) {
                return;
            }

if (this.coords.w_rs !== this.coords.w_rs_old) {
                this.target = "base";
                this.is_resize = true;
            }

if (this.coords.w_rs !== this.coords.w_rs_old || this.force_redraw) {
                this.setMinMax();
                this.calc(true);
                this.drawLabels();
                if (this.options.grid) {
                    this.calcGridMargin();
                    this.calcGridLabels();
                }
                this.force_redraw = true;
                this.coords.w_rs_old = this.coords.w_rs;
                this.drawShadow();
            }

if (!this.coords.w_rs) {
                return;
            }

if (!this.dragging && !this.force_redraw && !this.is_key) {
                return;
            }

if (this.old_from !== this.result.from || this.old_to !== this.result.to || this.force_redraw || this.is_key) {

this.drawLabels();

this.$cache.bar[0].style.left = this.coords.p_bar_x + "%";
                this.$cache.bar[0].style.width = this.coords.p_bar_w + "%";

if (this.options.type === "single") {
                    this.$cache.s_single[0].style.left = this.coords.p_single_fake + "%";

this.$cache.single[0].style.left = this.labels.p_single_left + "%";

if (this.options.values.length) {
                        this.$cache.input.prop("value", this.result.from_value);
                    } else {
                        this.$cache.input.prop("value", this.result.from);
                    }
                    this.$cache.input.data("from", this.result.from);
                } else {
                    this.$cache.s_from[0].style.left = this.coords.p_from_fake + "%";
                    this.$cache.s_to[0].style.left = this.coords.p_to_fake + "%";

if (this.old_from !== this.result.from || this.force_redraw) {
                        this.$cache.from[0].style.left = this.labels.p_from_left + "%";
                    }
                    if (this.old_to !== this.result.to || this.force_redraw) {
                        this.$cache.to[0].style.left = this.labels.p_to_left + "%";
                    }

this.$cache.single[0].style.left = this.labels.p_single_left + "%";

if (this.options.values.length) {
                        this.$cache.input.prop("value", this.result.from_value + this.options.input_values_separator + this.result.to_value);
                    } else {
                        this.$cache.input.prop("value", this.result.from + this.options.input_values_separator + this.result.to);
                    }
                    this.$cache.input.data("from", this.result.from);
                    this.$cache.input.data("to", this.result.to);
                }

if ((this.old_from !== this.result.from || this.old_to !== this.result.to) && !this.is_start) {
                    this.$cache.input.trigger("change");
                }

this.old_from = this.result.from;
                this.old_to = this.result.to;

// callbacks call
                if (!this.is_resize && !this.is_update && !this.is_start && !this.is_finish) {
                    this.callOnChange();
                }
                if (this.is_key || this.is_click) {
                    this.is_key = false;
                    this.is_click = false;
                    this.callOnFinish();
                }

this.is_update = false;
                this.is_resize = false;
                this.is_finish = false;
            }

this.is_start = false;
            this.is_key = false;
            this.is_click = false;
            this.force_redraw = false;
        },

/**
         * Draw labels
         * measure labels collisions
         * collapse close labels
         */
        drawLabels: function () {
            if (!this.options) {
                return;
            }

var values_num = this.options.values.length,
                p_values = this.options.p_values,
                text_single,
                text_from,
                text_to;

if (this.options.hide_from_to) {
                return;
            }

if (this.options.type === "single") {

if (values_num) {
                    text_single = this.decorate(p_values[this.result.from]);
                    this.$cache.single.html(text_single);
                } else {
                    text_single = this.decorate(this._prettify(this.result.from), this.result.from);
                    this.$cache.single.html(text_single);
                }

this.calcLabels();

if (this.labels.p_single_left < this.labels.p_min + 1) {
 this.$cache.min[0].style.visibility = "hidden";
 } else {
 this.$cache.min[0].style.visibility = "visible";
 }

if (this.labels.p_single_left + this.labels.p_single_fake > 100 - this.labels.p_max - 1) {
                    this.$cache.max[0].style.visibility = "hidden";
                } else {
                    this.$cache.max[0].style.visibility = "visible";
                }

} else {

if (values_num) {

if (this.options.decorate_both) {
                        text_single = this.decorate(p_values[this.result.from]);
                        text_single += this.options.values_separator;
                        text_single += this.decorate(p_values[this.result.to]);
                    } else {
                        text_single = this.decorate(p_values[this.result.from] + this.options.values_separator + p_values[this.result.to]);
                    }
                    text_from = this.decorate(p_values[this.result.from]);
                    text_to = this.decorate(p_values[this.result.to]);

this.$cache.single.html(text_single);
                    this.$cache.from.html(text_from);
                    this.$cache.to.html(text_to);

} else {

if (this.options.decorate_both) {
                        text_single = this.decorate(this._prettify(this.result.from), this.result.from);
                        text_single += this.options.values_separator;
                        text_single += this.decorate(this._prettify(this.result.to), this.result.to);
                    } else {
                        text_single = this.decorate(this._prettify(this.result.from) + this.options.values_separator + this._prettify(this.result.to), this.result.to);
                    }
                    text_from = this.decorate(this._prettify(this.result.from), this.result.from);
                    text_to = this.decorate(this._prettify(this.result.to), this.result.to);

this.$cache.single.html(text_single);
                    this.$cache.from.html(text_from);
                    this.$cache.to.html(text_to);

}

this.calcLabels();

var min = Math.min(this.labels.p_single_left, this.labels.p_from_left),
                    single_left = this.labels.p_single_left + this.labels.p_single_fake,
                    to_left = this.labels.p_to_left + this.labels.p_to_fake,
                    max = Math.max(single_left, to_left);

if (this.labels.p_from_left + this.labels.p_from_fake >= this.labels.p_to_left) {
                    this.$cache.from[0].style.visibility = "hidden";
                    this.$cache.to[0].style.visibility = "hidden";
                    this.$cache.single[0].style.visibility = "visible";

if (this.result.from === this.result.to) {
                        if (this.target === "from") {
                            this.$cache.from[0].style.visibility = "visible";
                        } else if (this.target === "to") {
                            this.$cache.to[0].style.visibility = "visible";
                        } else if (!this.target) {
                            this.$cache.from[0].style.visibility = "visible";
                        }
                        this.$cache.single[0].style.visibility = "hidden";
                        max = to_left;
                    } else {
                        this.$cache.from[0].style.visibility = "hidden";
                        this.$cache.to[0].style.visibility = "hidden";
                        this.$cache.single[0].style.visibility = "visible";
                        max = Math.max(single_left, to_left);
                    }
                } else {
                    this.$cache.from[0].style.visibility = "visible";
                    this.$cache.to[0].style.visibility = "visible";
                    this.$cache.single[0].style.visibility = "hidden";
                }

if (min < this.labels.p_min + 1) {
 this.$cache.min[0].style.visibility = "hidden";
 } else {
 this.$cache.min[0].style.visibility = "visible";
 }

if (max > 100 - this.labels.p_max - 1) {
                    this.$cache.max[0].style.visibility = "hidden";
                } else {
                    this.$cache.max[0].style.visibility = "visible";
                }

}
        },

/**
         * Draw shadow intervals
         */
        drawShadow: function () {
            var o = this.options,
                c = this.$cache,

is_from_min = typeof o.from_min === "number" && !isNaN(o.from_min),
                is_from_max = typeof o.from_max === "number" && !isNaN(o.from_max),
                is_to_min = typeof o.to_min === "number" && !isNaN(o.to_min),
                is_to_max = typeof o.to_max === "number" && !isNaN(o.to_max),

from_min,
                from_max,
                to_min,
                to_max;

if (o.type === "single") {
                if (o.from_shadow && (is_from_min || is_from_max)) {
                    from_min = this.convertToPercent(is_from_min ? o.from_min : o.min);
                    from_max = this.convertToPercent(is_from_max ? o.from_max : o.max) - from_min;
                    from_min = this.toFixed(from_min - (this.coords.p_handle / 100 * from_min));
                    from_max = this.toFixed(from_max - (this.coords.p_handle / 100 * from_max));
                    from_min = from_min + (this.coords.p_handle / 2);

c.shad_single[0].style.display = "block";
                    c.shad_single[0].style.left = from_min + "%";
                    c.shad_single[0].style.width = from_max + "%";
                } else {
                    c.shad_single[0].style.display = "none";
                }
            } else {
                if (o.from_shadow && (is_from_min || is_from_max)) {
                    from_min = this.convertToPercent(is_from_min ? o.from_min : o.min);
                    from_max = this.convertToPercent(is_from_max ? o.from_max : o.max) - from_min;
                    from_min = this.toFixed(from_min - (this.coords.p_handle / 100 * from_min));
                    from_max = this.toFixed(from_max - (this.coords.p_handle / 100 * from_max));
                    from_min = from_min + (this.coords.p_handle / 2);

c.shad_from[0].style.display = "block";
                    c.shad_from[0].style.left = from_min + "%";
                    c.shad_from[0].style.width = from_max + "%";
                } else {
                    c.shad_from[0].style.display = "none";
                }

if (o.to_shadow && (is_to_min || is_to_max)) {
                    to_min = this.convertToPercent(is_to_min ? o.to_min : o.min);
                    to_max = this.convertToPercent(is_to_max ? o.to_max : o.max) - to_min;
                    to_min = this.toFixed(to_min - (this.coords.p_handle / 100 * to_min));
                    to_max = this.toFixed(to_max - (this.coords.p_handle / 100 * to_max));
                    to_min = to_min + (this.coords.p_handle / 2);

c.shad_to[0].style.display = "block";
                    c.shad_to[0].style.left = to_min + "%";
                    c.shad_to[0].style.width = to_max + "%";
                } else {
                    c.shad_to[0].style.display = "none";
                }
            }
        },

// =============================================================================================================
        // Callbacks

callOnStart: function () {
            if (this.options.onStart && typeof this.options.onStart === "function") {
                this.options.onStart(this.result);
            }
        },
        callOnChange: function () {
            if (this.options.onChange && typeof this.options.onChange === "function") {
                this.options.onChange(this.result);
            }
        },
        callOnFinish: function () {
            if (this.options.onFinish && typeof this.options.onFinish === "function") {
                this.options.onFinish(this.result);
            }
        },
        callOnUpdate: function () {
            if (this.options.onUpdate && typeof this.options.onUpdate === "function") {
                this.options.onUpdate(this.result);
            }
        },

// =============================================================================================================
        // Service methods

toggleInput: function () {
            this.$cache.input.toggleClass("irs-hidden-input");
        },

/**
         * Convert real value to percent
         *
         * @param value {Number} X in real
         * @param no_min {boolean=} don't use min value
         * @returns {Number} X in percent
         */
        convertToPercent: function (value, no_min) {
            var diapason = this.options.max - this.options.min,
                one_percent = diapason / 100,
                val, percent;

if (!diapason) {
                this.no_diapason = true;
                return 0;
            }

if (no_min) {
                val = value;
            } else {
                val = value - this.options.min;
            }

percent = val / one_percent;

return this.toFixed(percent);
        },

/**
         * Convert percent to real values
         *
         * @param percent {Number} X in percent
         * @returns {Number} X in real
         */
        convertToValue: function (percent) {
            var min = this.options.min,
                max = this.options.max,
                min_decimals = min.toString().split(".")[1],
                max_decimals = max.toString().split(".")[1],
                min_length, max_length,
                avg_decimals = 0,
                abs = 0;

if (percent === 0) {
                return this.options.min;
            }
            if (percent === 100) {
                return this.options.max;
            }

if (min_decimals) {
                min_length = min_decimals.length;
                avg_decimals = min_length;
            }
            if (max_decimals) {
                max_length = max_decimals.length;
                avg_decimals = max_length;
            }
            if (min_length && max_length) {
                avg_decimals = (min_length >= max_length) ? min_length : max_length;
            }

if (min < 0) {
 abs = Math.abs(min);
 min = +(min + abs).toFixed(avg_decimals);
 max = +(max + abs).toFixed(avg_decimals);
 }

var number = ((max - min) / 100 * percent) + min,
                string = this.options.step.toString().split(".")[1],
                result;

if (string) {
                number = +number.toFixed(string.length);
            } else {
                number = number / this.options.step;
                number = number * this.options.step;

number = +number.toFixed(0);
            }

if (abs) {
                number -= abs;
            }

if (string) {
                result = +number.toFixed(string.length);
            } else {
                result = this.toFixed(number);
            }

if (result < this.options.min) {
 result = this.options.min;
 } else if (result > this.options.max) {
 result = this.options.max;
 }

return result;
        },

/**
         * Round percent value with step
         *
         * @param percent {Number}
         * @returns percent {Number} rounded
         */
        calcWithStep: function (percent) {
            var rounded = Math.round(percent / this.coords.p_step) * this.coords.p_step;

if (rounded > 100) {
                rounded = 100;
            }
            if (percent === 100) {
                rounded = 100;
            }

return this.toFixed(rounded);
        },

checkMinInterval: function (p_current, p_next, type) {
            var o = this.options,
                current,
                next;

if (!o.min_interval) {
                return p_current;
            }

current = this.convertToValue(p_current);
            next = this.convertToValue(p_next);

if (type === "from") {

if (next - current < o.min_interval) {
 current = next - o.min_interval;
 }

} else {

if (current - next < o.min_interval) {
 current = next + o.min_interval;
 }

}

return this.convertToPercent(current);
        },

checkMaxInterval: function (p_current, p_next, type) {
            var o = this.options,
                current,
                next;

if (!o.max_interval) {
                return p_current;
            }

current = this.convertToValue(p_current);
            next = this.convertToValue(p_next);

if (type === "from") {

if (next - current > o.max_interval) {
                    current = next - o.max_interval;
                }

} else {

if (current - next > o.max_interval) {
                    current = next + o.max_interval;
                }

}

return this.convertToPercent(current);
        },

checkDiapason: function (p_num, min, max) {
            var num = this.convertToValue(p_num),
                o = this.options;

if (typeof min !== "number") {
                min = o.min;
            }

if (typeof max !== "number") {
                max = o.max;
            }

if (num < min) {
 num = min;
 }

if (num > max) {
                num = max;
            }

return this.convertToPercent(num);
        },

toFixed: function (num) {
            num = num.toFixed(9);
            return +num;
        },

_prettify: function (num) {
            if (!this.options.prettify_enabled) {
                return num;
            }

if (this.options.prettify && typeof this.options.prettify === "function") {
                return this.options.prettify(num);
            } else {
                return this.prettify(num);
            }
        },

prettify: function (num) {
            var n = num.toString();
            return n.replace(/(\d{1,3}(?=(?:\d\d\d)+(?!\d)))/g, "$1" + this.options.prettify_separator);
        },

checkEdges: function (left, width) {
            if (!this.options.force_edges) {
                return this.toFixed(left);
            }

if (left < 0) {
 left = 0;
 } else if (left > 100 - width) {
 left = 100 - width;
 }

return this.toFixed(left);
        },

validate: function () {
            var o = this.options,
                r = this.result,
                v = o.values,
                vl = v.length,
                value,
                i;

if (typeof o.min === "string") o.min = +o.min;
            if (typeof o.max === "string") o.max = +o.max;
            if (typeof o.from === "string") o.from = +o.from;
            if (typeof o.to === "string") o.to = +o.to;
            if (typeof o.step === "string") o.step = +o.step;

if (typeof o.from_min === "string") o.from_min = +o.from_min;
            if (typeof o.from_max === "string") o.from_max = +o.from_max;
            if (typeof o.to_min === "string") o.to_min = +o.to_min;
            if (typeof o.to_max === "string") o.to_max = +o.to_max;

if (typeof o.keyboard_step === "string") o.keyboard_step = +o.keyboard_step;
            if (typeof o.grid_num === "string") o.grid_num = +o.grid_num;

if (o.max < o.min) {
 o.max = o.min;
 }

if (vl) {
                o.p_values = [];
                o.min = 0;
                o.max = vl - 1;
                o.step = 1;
                o.grid_num = o.max;
                o.grid_snap = true;

for (i = 0; i < vl; i++) {
 value = +v[i];

if (!isNaN(value)) {
                        v[i] = value;
                        value = this._prettify(value);
                    } else {
                        value = v[i];
                    }

o.p_values.push(value);
                }
            }

if (typeof o.from !== "number" || isNaN(o.from)) {
                o.from = o.min;
            }

if (typeof o.to !== "number" || isNaN(o.from)) {
                o.to = o.max;
            }

if (o.type === "single") {

if (o.from < o.min) {
 o.from = o.min;
 }

if (o.from > o.max) {
                    o.from = o.max;
                }

} else {

if (o.from < o.min || o.from > o.max) {
 o.from = o.min;
 }
 if (o.to > o.max || o.to < o.min) {
 o.to = o.max;
 }
 if (o.from > o.to) {
 o.from = o.to;
 }

}

if (typeof o.step !== "number" || isNaN(o.step) || !o.step || o.step < 0) {
 o.step = 1;
 }

if (typeof o.keyboard_step !== "number" || isNaN(o.keyboard_step) || !o.keyboard_step || o.keyboard_step < 0) {
 o.keyboard_step = 5;
 }

if (typeof o.from_min === "number" && o.from < o.from_min) {
 o.from = o.from_min;
 }

if (typeof o.from_max === "number" && o.from > o.from_max) {
                o.from = o.from_max;
            }

if (typeof o.to_min === "number" && o.to < o.to_min) {
 o.to = o.to_min;
 }

if (typeof o.to_max === "number" && o.from > o.to_max) {
                o.to = o.to_max;
            }

if (r) {
                if (r.min !== o.min) {
                    r.min = o.min;
                }

if (r.max !== o.max) {
                    r.max = o.max;
                }

if (r.from < r.min || r.from > r.max) {
 r.from = o.from;
 }

if (r.to < r.min || r.to > r.max) {
 r.to = o.to;
 }
 }

if (typeof o.min_interval !== "number" || isNaN(o.min_interval) || !o.min_interval || o.min_interval < 0) {
 o.min_interval = 0;
 }

if (typeof o.max_interval !== "number" || isNaN(o.max_interval) || !o.max_interval || o.max_interval < 0) {
 o.max_interval = 0;
 }

if (o.min_interval && o.min_interval > o.max - o.min) {
                o.min_interval = o.max - o.min;
            }

if (o.max_interval && o.max_interval > o.max - o.min) {
                o.max_interval = o.max - o.min;
            }
        },

decorate: function (num, original) {
            var decorated = "",
                o = this.options;

if (o.prefix) {
                decorated += o.prefix;
            }

decorated += num;

if (o.max_postfix) {
                if (o.values.length && num === o.p_values[o.max]) {
                    decorated += o.max_postfix;
                    if (o.postfix) {
                        decorated += " ";
                    }
                } else if (original === o.max) {
                    decorated += o.max_postfix;
                    if (o.postfix) {
                        decorated += " ";
                    }
                }
            }

if (o.postfix) {
                decorated += o.postfix;
            }

return decorated;
        },

updateFrom: function () {
            this.result.from = this.options.from;
            this.result.from_percent = this.convertToPercent(this.result.from);
            if (this.options.values) {
                this.result.from_value = this.options.values[this.result.from];
            }
        },

updateTo: function () {
            this.result.to = this.options.to;
            this.result.to_percent = this.convertToPercent(this.result.to);
            if (this.options.values) {
                this.result.to_value = this.options.values[this.result.to];
            }
        },

updateResult: function () {
            this.result.min = this.options.min;
            this.result.max = this.options.max;
            this.updateFrom();
            this.updateTo();
        },

// =============================================================================================================
        // Grid

appendGrid: function () {
            if (!this.options.grid) {
                return;
            }

var o = this.options,
                i, z,

total = o.max - o.min,
                big_num = o.grid_num,
                big_p = 0,
                big_w = 0,

small_max = 4,
                local_small_max,
                small_p,
                small_w = 0,

result,
                html = '';

this.calcGridMargin();

if (o.grid_snap) {
                big_num = total / o.step;
                big_p = this.toFixed(o.step / (total / 100));
            } else {
                big_p = this.toFixed(100 / big_num);
            }

if (big_num > 4) {
                small_max = 3;
            }
            if (big_num > 7) {
                small_max = 2;
            }
            if (big_num > 14) {
                small_max = 1;
            }
            if (big_num > 28) {
                small_max = 0;
            }

for (i = 0; i < big_num + 1; i++) {
 local_small_max = small_max;

big_w = this.toFixed(big_p * i);

if (big_w > 100) {
                    big_w = 100;

local_small_max -= 2;
 if (local_small_max < 0) {
 local_small_max = 0;
 }
 }
 this.coords.big[i] = big_w;

small_p = (big_w - (big_p * (i - 1))) / (local_small_max + 1);

for (z = 1; z <= local_small_max; z++) {
 if (big_w === 0) {
 break;
 }

small_w = this.toFixed(big_w - (small_p * z));

html += '';
 }

html += '';

result = this.convertToValue(big_w);
                if (o.values.length) {
                    result = o.p_values[result];
                } else {
                    result = this._prettify(result);
                }

html += '' + result + '';
 }
 this.coords.big_num = Math.ceil(big_num + 1);

this.$cache.cont.addClass("irs-with-grid");
            this.$cache.grid.html(html);
            this.cacheGridLabels();
        },

cacheGridLabels: function () {
            var $label, i,
                num = this.coords.big_num;

for (i = 0; i < num; i++) {
 $label = this.$cache.grid.find(".js-grid-text-" + i);
 this.$cache.grid_labels.push($label);
 }

this.calcGridLabels();
        },

calcGridLabels: function () {
            var i, label, start = [], finish = [],
                num = this.coords.big_num;

for (i = 0; i < num; i++) {
 this.coords.big_w[i] = this.$cache.grid_labels[i].outerWidth(false);
 this.coords.big_p[i] = this.toFixed(this.coords.big_w[i] / this.coords.w_rs * 100);
 this.coords.big_x[i] = this.toFixed(this.coords.big_p[i] / 2);

start[i] = this.toFixed(this.coords.big[i] - this.coords.big_x[i]);
                finish[i] = this.toFixed(start[i] + this.coords.big_p[i]);
            }

if (this.options.force_edges) {
 if (start[0] < -this.coords.grid_gap) {
 start[0] = -this.coords.grid_gap;
 finish[0] = this.toFixed(start[0] + this.coords.big_p[0]);

this.coords.big_x[0] = this.coords.grid_gap;
                }

if (finish[num - 1] > 100 + this.coords.grid_gap) {
                    finish[num - 1] = 100 + this.coords.grid_gap;
                    start[num - 1] = this.toFixed(finish[num - 1] - this.coords.big_p[num - 1]);

this.coords.big_x[num - 1] = this.toFixed(this.coords.big_p[num - 1] - this.coords.grid_gap);
                }
            }

this.calcGridCollision(2, start, finish);
            this.calcGridCollision(4, start, finish);

for (i = 0; i < num; i++) {
 label = this.$cache.grid_labels[i][0];
 label.style.marginLeft = -this.coords.big_x[i] + "%";
 }
 },

// Collisions Calc Beta
        // TODO: Refactor then have plenty of time
        calcGridCollision: function (step, start, finish) {
            var i, next_i, label,
                num = this.coords.big_num;

for (i = 0; i < num; i += step) {
 next_i = i + (step / 2);
 if (next_i >= num) {
 break;
 }

label = this.$cache.grid_labels[next_i][0];

if (finish[i] <= start[next_i]) {
 label.style.visibility = "visible";
 } else {
 label.style.visibility = "hidden";
 }
 }
 },

calcGridMargin: function () {
            if (!this.options.grid_margin) {
                return;
            }

this.coords.w_rs = this.$cache.rs.outerWidth(false);
            if (!this.coords.w_rs) {
                return;
            }

if (this.options.type === "single") {
                this.coords.w_handle = this.$cache.s_single.outerWidth(false);
            } else {
                this.coords.w_handle = this.$cache.s_from.outerWidth(false);
            }
            this.coords.p_handle = this.toFixed(this.coords.w_handle  / this.coords.w_rs * 100);
            this.coords.grid_gap = this.toFixed((this.coords.p_handle / 2) - 0.1);

this.$cache.grid[0].style.width = this.toFixed(100 - this.coords.p_handle) + "%";
            this.$cache.grid[0].style.left = this.coords.grid_gap + "%";
        },

// =============================================================================================================
        // Public methods

update: function (options) {
            if (!this.input) {
                return;
            }

this.is_update = true;

this.options.from = this.result.from;
            this.options.to = this.result.to;

this.options = $.extend(this.options, options);
            this.validate();
            this.updateResult(options);

this.toggleInput();
            this.remove();
            this.init(true);
        },

reset: function () {
            if (!this.input) {
                return;
            }

this.updateResult();
            this.update();
        },

destroy: function () {
            if (!this.input) {
                return;
            }

this.toggleInput();
            this.$cache.input.prop("readonly", false);
            $.data(this.input, "ionRangeSlider", null);

this.remove();
            this.input = null;
            this.options = null;
        }
    };

$.fn.ionRangeSlider = function (options) {
        return this.each(function() {
            if (!$.data(this, "ionRangeSlider")) {
                $.data(this, "ionRangeSlider", new IonRangeSlider(this, options, plugin_count++));
            }
        });
    };

// =================================================================================================================
    // http://paulirish.com/2011/requestanimationframe-for-smart-animating/
    // http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

// requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel

// MIT license

(function() {
 var lastTime = 0;
 var vendors = ['ms', 'moz', 'webkit', 'o'];
 for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
 window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
 window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame']
 || window[vendors[x]+'CancelRequestAnimationFrame'];
 }

if (!window.requestAnimationFrame)
            window.requestAnimationFrame = function(callback, element) {
                var currTime = new Date().getTime();
                var timeToCall = Math.max(0, 16 - (currTime - lastTime));
                var id = window.setTimeout(function() { callback(currTime + timeToCall); },
                    timeToCall);
                lastTime = currTime + timeToCall;
                return id;
            };

if (!window.cancelAnimationFrame)
            window.cancelAnimationFrame = function(id) {
                clearTimeout(id);
            };
    }());

}));

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