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File Content: `spin.js`

(function(root, factory) {
    if (typeof exports == "object") module.exports = factory(); else if (typeof define == "function" && define.amd) define(factory); else root.Spinner = factory();
})(this, function() {
    "use strict";
    var prefixes = [ "webkit", "Moz", "ms", "O" ], animations = {}, useCssAnimations;
    function createEl(tag, prop) {
        var el = document.createElement(tag || "div"), n;
        for (n in prop) el[n] = prop[n];
        return el;
    }
    function ins(parent) {
        for (var i = 1, n = arguments.length; i < n; i++) parent.appendChild(arguments[i]);
        return parent;
    }
    var sheet = function() {
        var el = createEl("style", {
            type: "text/css"
        });
        ins(document.getElementsByTagName("head")[0], el);
        return el.sheet || el.styleSheet;
    }();
    function addAnimation(alpha, trail, i, lines) {
        var name = [ "opacity", trail, ~~(alpha * 100), i, lines ].join("-"), start = .01 + i / lines * 100, z = Math.max(1 - (1 - alpha) / trail * (100 - start), alpha), prefix = useCssAnimations.substring(0, useCssAnimations.indexOf("Animation")).toLowerCase(), pre = prefix && "-" + prefix + "-" || "";
        if (!animations[name]) {
            sheet.insertRule("@" + pre + "keyframes " + name + "{" + "0%{opacity:" + z + "}" + start + "%{opacity:" + alpha + "}" + (start + .01) + "%{opacity:1}" + (start + trail) % 100 + "%{opacity:" + alpha + "}" + "100%{opacity:" + z + "}" + "}", sheet.cssRules.length);
            animations[name] = 1;
        }
        return name;
    }
    function vendor(el, prop) {
        var s = el.style, pp, i;
        prop = prop.charAt(0).toUpperCase() + prop.slice(1);
        for (i = 0; i < prefixes.length; i++) {
            pp = prefixes[i] + prop;
            if (s[pp] !== undefined) return pp;
        }
        if (s[prop] !== undefined) return prop;
    }
    function css(el, prop) {
        for (var n in prop) el.style[vendor(el, n) || n] = prop[n];
        return el;
    }
    function merge(obj) {
        for (var i = 1; i < arguments.length; i++) {
            var def = arguments[i];
            for (var n in def) if (obj[n] === undefined) obj[n] = def[n];
        }
        return obj;
    }
    function pos(el) {
        var o = {
            x: el.offsetLeft,
            y: el.offsetTop
        };
        while (el = el.offsetParent) o.x += el.offsetLeft, o.y += el.offsetTop;
        return o;
    }
    function getColor(color, idx) {
        return typeof color == "string" ? color : color[idx % color.length];
    }
    var defaults = {
        lines: 12,
        length: 7,
        width: 5,
        radius: 10,
        rotate: 0,
        corners: 1,
        color: "#000",
        direction: 1,
        speed: 1,
        trail: 100,
        opacity: 1 / 4,
        fps: 20,
        zIndex: 2e9,
        className: "spinner",
        top: "50%",
        left: "50%",
        position: "absolute"
    };
    function Spinner(o) {
        this.opts = merge(o || {}, Spinner.defaults, defaults);
    }
    Spinner.defaults = {};
    merge(Spinner.prototype, {
        spin: function(target) {
            this.stop();
            var self = this, o = self.opts, el = self.el = css(createEl(0, {
                className: o.className
            }), {
                position: o.position,
                width: 0,
                zIndex: o.zIndex
            }), mid = o.radius + o.length + o.width;
            css(el, {
                left: o.left,
                top: o.top
            });
            if (target) {
                target.insertBefore(el, target.firstChild || null);
            }
            el.setAttribute("role", "progressbar");
            self.lines(el, self.opts);
            if (!useCssAnimations) {
                var i = 0, start = (o.lines - 1) * (1 - o.direction) / 2, alpha, fps = o.fps, f = fps / o.speed, ostep = (1 - o.opacity) / (f * o.trail / 100), astep = f / o.lines;
                (function anim() {
                    i++;
                    for (var j = 0; j < o.lines; j++) {
                        alpha = Math.max(1 - (i + (o.lines - j) * astep) % f * ostep, o.opacity);
                        self.opacity(el, j * o.direction + start, alpha, o);
                    }
                    self.timeout = self.el && setTimeout(anim, ~~(1e3 / fps));
                })();
            }
            return self;
        },
        stop: function() {
            var el = this.el;
            if (el) {
                clearTimeout(this.timeout);
                if (el.parentNode) el.parentNode.removeChild(el);
                this.el = undefined;
            }
            return this;
        },
        lines: function(el, o) {
            var i = 0, start = (o.lines - 1) * (1 - o.direction) / 2, seg;
            function fill(color, shadow) {
                return css(createEl(), {
                    position: "absolute",
                    width: o.length + o.width + "px",
                    height: o.width + "px",
                    background: color,
                    boxShadow: shadow,
                    transformOrigin: "left",
                    transform: "rotate(" + ~~(360 / o.lines * i + o.rotate) + "deg) translate(" + o.radius + "px" + ",0)",
                    borderRadius: (o.corners * o.width >> 1) + "px"
                });
            }
            for (;i < o.lines; i++) {
                seg = css(createEl(), {
                    position: "absolute",
                    top: 1 + ~(o.width / 2) + "px",
                    transform: o.hwaccel ? "translate3d(0,0,0)" : "",
                    opacity: o.opacity,
                    animation: useCssAnimations && addAnimation(o.opacity, o.trail, start + i * o.direction, o.lines) + " " + 1 / o.speed + "s linear infinite"
                });
                if (o.shadow) ins(seg, css(fill("#000", "0 0 4px " + "#000"), {
                    top: 2 + "px"
                }));
                ins(el, ins(seg, fill(getColor(o.color, i), "0 0 1px rgba(0,0,0,.1)")));
            }
            return el;
        },
        opacity: function(el, i, val) {
            if (i < el.childNodes.length) el.childNodes[i].style.opacity = val;
        }
    });
    function initVML() {
        function vml(tag, attr) {
            return createEl("<" + tag + ' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">', attr);
        }
        sheet.addRule(".spin-vml", "behavior:url(#default#VML)");
        Spinner.prototype.lines = function(el, o) {
            var r = o.length + o.width, s = 2 * r;
            function grp() {
                return css(vml("group", {
                    coordsize: s + " " + s,
                    coordorigin: -r + " " + -r
                }), {
                    width: s,
                    height: s
                });
            }
            var margin = -(o.width + o.length) * 2 + "px", g = css(grp(), {
                position: "absolute",
                top: margin,
                left: margin
            }), i;
            function seg(i, dx, filter) {
                ins(g, ins(css(grp(), {
                    rotation: 360 / o.lines * i + "deg",
                    left: ~~dx
                }), ins(css(vml("roundrect", {
                    arcsize: o.corners
                }), {
                    width: r,
                    height: o.width,
                    left: o.radius,
                    top: -o.width >> 1,
                    filter: filter
                }), vml("fill", {
                    color: getColor(o.color, i),
                    opacity: o.opacity
                }), vml("stroke", {
                    opacity: 0
                }))));
            }
            if (o.shadow) for (i = 1; i <= o.lines; i++) seg(i, -2, "progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)");
            for (i = 1; i <= o.lines; i++) seg(i);
            return ins(el, g);
        };
        Spinner.prototype.opacity = function(el, i, val, o) {
            var c = el.firstChild;
            o = o.shadow && o.lines || 0;
            if (c && i + o < c.childNodes.length) {
                c = c.childNodes[i + o];
                c = c && c.firstChild;
                c = c && c.firstChild;
                if (c) c.opacity = val;
            }
        };
    }
    var probe = css(createEl("group"), {
        behavior: "url(#default#VML)"
    });
    if (!vendor(probe, "transform") && probe.adj) initVML(); else useCssAnimations = vendor(probe, "animation");
    return Spinner;
});
Name	Size	Permission
ladda-themeless.css	9884 bytes	0666
ladda-themeless.min.css	7710 bytes	0666
ladda.css	11807 bytes	0666
ladda.jquery.min.js	577 bytes	0666
ladda.js	5775 bytes	0666
ladda.min.css	9124 bytes	0666
ladda.min.js	3194 bytes	0666
spin.js	8618 bytes	0666
spin.min.js	4123 bytes	0666
File Content: spin.js

File Content: `spin.js`
