pace.js

/*! pace 0.4.10 */
(function() {
  var a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, A, B, C, D, E, F, G, H, I, J, K, L = [].slice,
    M = {}.hasOwnProperty,
    N = function(a, b) {
      function c() {
        this.constructor = a
      }
      for (var d in b) M.call(b, d) && (a[d] = b[d]);
      return c.prototype = b.prototype, a.prototype = new c, a.__super__ = b.prototype, a
    },
    O = [].indexOf ||
  function(a) {
    for (var b = 0, c = this.length; c > b; b++) if (b in this && this[b] === a) return b;
    return -1
  };
  q = {
    catchupTime: 500,
    initialRate: .03,
    minTime: 500,
    ghostTime: 250,
    maxProgressPerFrame: 10,
    easeFactor: 1.25,
    startOnPageLoad: !0,
    restartOnPushState: !0,
    restartOnBackboneRoute: !0,
    target: "body",
    elements: {
      checkInterval: 100,
      selectors: ["body"]
    },
    eventLag: {
      minSamples: 10
    },
    ajax: {
      trackMethods: ["GET"],
      trackWebSockets: !0
    }
  }, y = function() {
    var a;
    return null != (a = "undefined" != typeof performance && null !== performance ? "function" == typeof performance.now ? performance.now() : void 0 : void 0) ? a : +new Date
  }, A = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame, p = window.cancelAnimationFrame || window.mozCancelAnimationFrame, null == A && (A = function(a) {
    return setTimeout(a, 50)
  }, p = function(a) {
    return clearTimeout(a)
  }), C = function(a) {
    var b, c;
    return b = y(), c = function() {
      var d;
      return d = y() - b, b = y(), a(d, function() {
        return A(c)
      })
    }, c()
  }, B = function() {
    var a, b, c;
    return c = arguments[0], b = arguments[1], a = 3 <= arguments.length ? L.call(arguments, 2) : [], "function" == typeof c[b] ? c[b].apply(c, a) : c[b]
  }, r = function() {
    var a, b, c, d, e, f, g;
    for (b = arguments[0], d = 2 <= arguments.length ? L.call(arguments, 1) : [], f = 0, g = d.length; g > f; f++) if (c = d[f]) for (a in c) M.call(c, a) && (e = c[a], null != b[a] && "object" == typeof b[a] && null != e && "object" == typeof e ? r(b[a], e) : b[a] = e);
    return b
  }, u = function(a, b) {
    var c, d, e;
    if (null == a && (a = "options"), null == b && (b = !0), e = document.querySelector("[data-pace-" + a + "]")) {
      if (c = e.getAttribute("data-pace-" + a), !b) return c;
      try {
        return JSON.parse(c)
      } catch (f) {
        return d = f, "undefined" != typeof console && null !== console ? console.error("Error parsing inline pace options", d) : void 0
      }
    }
  }, null == window.Pace && (window.Pace = {}), z = Pace.options = r(q, window.paceOptions, u()), b = function() {
    function a() {
      this.progress = 0
    }
    return a.prototype.getElement = function() {
      var a;
      return null == this.el && (this.el = document.createElement("div"), this.el.className = "pace pace-active", this.el.innerHTML = '<div class="pace-progress">\n  <div class="pace-progress-inner"></div>\n</div>\n<div class="pace-activity"></div>', a = document.querySelector(z.target), null != a.firstChild ? a.insertBefore(this.el, a.firstChild) : a.appendChild(this.el)), this.el
    }, a.prototype.finish = function() {
      var a;
      return a = this.getElement(), a.className = a.className.replace("pace-active", ""), a.className += " pace-inactive"
    }, a.prototype.update = function(a) {
      return this.progress = a, this.render()
    }, a.prototype.destroy = function() {
      return this.getElement().parentNode.removeChild(this.getElement()), this.el = void 0
    }, a.prototype.render = function() {
      var a, b;
      return null == document.querySelector(z.target) ? !1 : (a = this.getElement(), a.children[0].style.width = "" + this.progress + "%", (!this.lastRenderedProgress || 0 | (this.lastRenderedProgress | 0 !== this.progress)) && (a.setAttribute("data-progress-text", "" + (0 | this.progress) + "%"), this.progress >= 100 ? b = "99" : (b = this.progress < 10 ? "0" : "", b += 0 | this.progress), a.setAttribute("data-progress", "" + b)), this.lastRenderedProgress = this.progress)
    }, a.prototype.done = function() {
      return this.progress >= 100
    }, a
  }(), g = function() {
    function a() {
      this.bindings = {}
    }
    return a.prototype.trigger = function(a, b) {
      var c, d, e, f, g;
      if (null != this.bindings[a]) {
        for (f = this.bindings[a], g = [], d = 0, e = f.length; e > d; d++) c = f[d], g.push(c.call(this, b));
        return g
      }
    }, a.prototype.on = function(a, b) {
      var c;
      return null == (c = this.bindings)[a] && (c[a] = []), this.bindings[a].push(b)
    }, a
  }(), I = window.XMLHttpRequest, H = window.XDomainRequest, G = window.WebSocket, s = function(a, b) {
    var c, d, e, f;
    f = [];
    for (d in b.prototype) try {
      e = b.prototype[d], null == a[d] && "function" != typeof e ? f.push(a[d] = e) : f.push(void 0)
    } catch (g) {
      c = g
    }
    return f
  }, h = function(a) {
    function b() {
      var a, c = this;
      b.__super__.constructor.apply(this, arguments), a = function(a) {
        var b;
        return b = a.open, a.open = function(d, e) {
          var f;
          return f = (null != d ? d : "GET").toUpperCase(), O.call(z.ajax.trackMethods, f) >= 0 && c.trigger("request", {
            type: d,
            url: e,
            request: a
          }), b.apply(a, arguments)
        }
      }, window.XMLHttpRequest = function(b) {
        var c;
        return c = new I(b), a(c), c
      }, s(window.XMLHttpRequest, I), null != H && (window.XDomainRequest = function() {
        var b;
        return b = new H, a(b), b
      }, s(window.XDomainRequest, H)), null != G && z.ajax.trackWebSockets && (window.WebSocket = function(a, b) {
        var d;
        return d = new G(a, b), c.trigger("request", {
          type: "socket",
          url: a,
          protocols: b,
          request: d
        }), d
      }, s(window.WebSocket, G))
    }
    return N(b, a), b
  }(g), x = new h, a = function() {
    function a() {
      var a = this;
      this.elements = [], x.on("request", function() {
        return a.watch.apply(a, arguments)
      })
    }
    return a.prototype.watch = function(a) {
      var b, c, d;
      return d = a.type, b = a.request, c = "socket" === d ? new k(b) : new l(b), this.elements.push(c)
    }, a
  }(), l = function() {
    function a(a) {
      var b, c, d, e, f, g, h = this;
      if (this.progress = 0, null != window.ProgressEvent) for (c = null, a.addEventListener("progress", function(a) {
        return h.progress = a.lengthComputable ? 100 * a.loaded / a.total : h.progress + (100 - h.progress) / 2
      }), g = ["load", "abort", "timeout", "error"], d = 0, e = g.length; e > d; d++) b = g[d], a.addEventListener(b, function() {
        return h.progress = 100
      });
      else f = a.onreadystatechange, a.onreadystatechange = function() {
        var b;
        return 0 === (b = a.readyState) || 4 === b ? h.progress = 100 : 3 === a.readyState && (h.progress = 50), "function" == typeof f ? f.apply(null, arguments) : void 0
      }
    }
    return a
  }(), k = function() {
    function a(a) {
      var b, c, d, e, f = this;
      for (this.progress = 0, e = ["error", "open"], c = 0, d = e.length; d > c; c++) b = e[c], a.addEventListener(b, function() {
        return f.progress = 100
      })
    }
    return a
  }(), d = function() {
    function a(a) {
      var b, c, d, f;
      for (null == a && (a = {}), this.elements = [], null == a.selectors && (a.selectors = []), f = a.selectors, c = 0, d = f.length; d > c; c++) b = f[c], this.elements.push(new e(b))
    }
    return a
  }(), e = function() {
    function a(a) {
      this.selector = a, this.progress = 0, this.check()
    }
    return a.prototype.check = function() {
      var a = this;
      return document.querySelector(this.selector) ? this.done() : setTimeout(function() {
        return a.check()
      }, z.elements.checkInterval)
    }, a.prototype.done = function() {
      return this.progress = 100
    }, a
  }(), c = function() {
    function a() {
      var a, b, c = this;
      this.progress = null != (b = this.states[document.readyState]) ? b : 100, a = document.onreadystatechange, document.onreadystatechange = function() {
        return null != c.states[document.readyState] && (c.progress = c.states[document.readyState]), "function" == typeof a ? a.apply(null, arguments) : void 0
      }
    }
    return a.prototype.states = {
      loading: 0,
      interactive: 50,
      complete: 100
    }, a
  }(), f = function() {
    function a() {
      var a, b, c, d = this;
      this.progress = 0, a = 0, c = 0, b = y(), setInterval(function() {
        var e;
        return e = y() - b - 50, b = y(), a += (e - a) / 15, c++ > z.eventLag.minSamples && Math.abs(a) < 3 && (a = 0), d.progress = 100 * (3 / (a + 3))
      }, 50)
    }
    return a
  }(), j = function() {
    function a(a) {
      this.source = a, this.last = this.sinceLastUpdate = 0, this.rate = z.initialRate, this.catchup = 0, this.progress = this.lastProgress = 0, null != this.source && (this.progress = B(this.source, "progress"))
    }
    return a.prototype.tick = function(a, b) {
      var c;
      return null == b && (b = B(this.source, "progress")), b >= 100 && (this.done = !0), b === this.last ? this.sinceLastUpdate += a : (this.sinceLastUpdate && (this.rate = (b - this.last) / this.sinceLastUpdate), this.catchup = (b - this.progress) / z.catchupTime, this.sinceLastUpdate = 0, this.last = b), b > this.progress && (this.progress += this.catchup * a), c = 1 - Math.pow(this.progress / 100, z.easeFactor), this.progress += c * this.rate * a, this.progress = Math.min(this.lastProgress + z.maxProgressPerFrame, this.progress), this.progress = Math.max(0, this.progress), this.progress = Math.min(100, this.progress), this.lastProgress = this.progress, this.progress
    }, a
  }(), E = null, D = null, n = null, F = null, m = null, o = null, v = function() {
    return z.restartOnPushState ? Pace.restart() : void 0
  }, null != window.history.pushState && (J = window.history.pushState, window.history.pushState = function() {
    return v(), J.apply(window.history, arguments)
  }), null != window.history.replaceState && (K = window.history.replaceState, window.history.replaceState = function() {
    return v(), K.apply(window.history, arguments)
  }), t = !0, z.restartOnBackboneRoute && setTimeout(function() {
    return null != window.Backbone ? Backbone.history.on("route", function(a, b) {
      var c, d, e, f, g;
      if (d = z.restartOnBackboneRoute) {
        if (t) return t = !1, void 0;
        if ("object" == typeof d) {
          for (g = [], e = 0, f = d.length; f > e; e++) if (c = d[e], c === b) {
            Pace.restart();
            break
          }
          return g
        }
        return Pace.restart()
      }
    }) : void 0
  }, 0), i = {
    ajax: a,
    elements: d,
    document: c,
    eventLag: f
  }, (w = function() {
    var a, c, d, e, f, g, h, k, l;
    for (Pace.sources = E = [], h = ["ajax", "elements", "document", "eventLag"], d = 0, f = h.length; f > d; d++) c = h[d], z[c] !== !1 && E.push(new i[c](z[c]));
    for (l = null != (k = z.extraSources) ? k : [], e = 0, g = l.length; g > e; e++) a = l[e], E.push(new a(z));
    return Pace.bar = n = new b, D = [], F = new j
  })(), Pace.stop = function() {
    return n.destroy(), o = !0, null != m && ("function" == typeof p && p(m), m = null), w()
  }, Pace.restart = function() {
    return Pace.stop(), Pace.go()
  }, Pace.go = function() {
    return n.render(), o = !1, m = C(function(a, b) {
      var c, d, e, f, g, h, i, k, l, m, p, q, r, s, t, u, v, w;
      for (k = 100 - n.progress, d = r = 0, e = !0, h = s = 0, u = E.length; u > s; h = ++s) for (p = E[h], m = null != D[h] ? D[h] : D[h] = [], g = null != (w = p.elements) ? w : [p], i = t = 0, v = g.length; v > t; i = ++t) f = g[i], l = null != m[i] ? m[i] : m[i] = new j(f), e &= l.done, l.done || (d++, r += l.tick(a));
      return c = r / d, n.update(F.tick(a, c)), q = y(), n.done() || e || o ? (n.update(100), setTimeout(function() {
        return n.finish()
      }, Math.max(z.ghostTime, Math.min(z.minTime, y() - q)))) : b()
    })
  }, Pace.start = function(a) {
    return r(z, a), n.render(), document.querySelector(".pace") ? Pace.go() : setTimeout(Pace.start, 50)
  }, "function" == typeof define && define.amd ? define(function() {
    return Pace
  }) : "object" == typeof exports ? module.exports = Pace : z.startOnPageLoad && Pace.start()
}).call(this);