https://jumpseller.mx/assets/js/nprogress.js

1/* NProgress, (c) 2013, 2014 Rico Sta. Cruz - http://ricostacruz.com/nprogress
2 * @license MIT */
3
4;(function(root, factory) {
5
6  if (typeof define === 'function' && define.amd) {
7    define(factory);
8  } else if (typeof exports === 'object') {
9    module.exports = factory();
10  } else {
11    root.NProgress = factory();
12  }
13
14})(this, function() {
15  var NProgress = {};
16
17  NProgress.version = '0.2.0';
18
19  var Settings = NProgress.settings = {
20    minimum: 0.08,
21    easing: 'linear',
22    positionUsing: '',
23    speed: 200,
24    trickle: true,
25    trickleSpeed: 200,
26    showSpinner: true,
27    barSelector: '[role="bar"]',
28    spinnerSelector: '[role="spinner"]',
29    parent: 'body',
30    template: '<div class="bar" role="bar"><div class="peg"></div></div><div class="spinner" role="spinner"><div class="spinner-icon"></div></div>'
31  };
32
33  /**
34   * Updates configuration.
35   *
36   *     NProgress.configure({
37   *       minimum: 0.1
38   *     });
39   */
40  NProgress.configure = function(options) {
41    var key, value;
42    for (key in options) {
43      value = options[key];
44      if (value !== undefined && options.hasOwnProperty(key)) Settings[key] = value;
45    }
46
47    return this;
48  };
49
50  /**
51   * Last number.
52   */
53
54  NProgress.status = null;
55
56  /**
57   * Sets the progress bar status, where `n` is a number from `0.0` to `1.0`.
58   *
59   *     NProgress.set(0.4);
60   *     NProgress.set(1.0);
61   */
62
63  NProgress.set = function(n) {
64    var started = NProgress.isStarted();
65
66    n = clamp(n, Settings.minimum, 1);
67    NProgress.status = (n === 1 ? null : n);
68
69    var progress = NProgress.render(!started),
70        bar      = progress.querySelector(Settings.barSelector),
71        speed    = Settings.speed,
72        ease     = Settings.easing;
73
74    progress.offsetWidth; /* Repaint */
75
76    queue(function(next) {
77      // Set positionUsing if it hasn't already been set
78      if (Settings.positionUsing === '') Settings.positionUsing = NProgress.getPositioningCSS();
79
80      // Add transition
81      css(bar, barPositionCSS(n, speed, ease));
82
83      if (n === 1) {
84        // Fade out
85        css(progress, {
86          transition: 'none',
87          opacity: 1
88        });
89        progress.offsetWidth; /* Repaint */
90
91        setTimeout(function() {
92          css(progress, {
93            transition: 'all ' + speed + 'ms linear',
94            opacity: 0
95          });
96          setTimeout(function() {
97            NProgress.remove();
98            next();
99          }, speed);
100        }, speed);
101      } else {
102        setTimeout(next, speed);
103      }
104    });
105
106    return this;
107  };
108
109  NProgress.isStarted = function() {
110    return typeof NProgress.status === 'number';
111  };
112
113  /**
114   * Shows the progress bar.
115   * This is the same as setting the status to 0%, except that it doesn't go backwards.
116   *
117   *     NProgress.start();
118   *
119   */
120  NProgress.start = function() {
121    if (!NProgress.status) NProgress.set(0);
122
123    var work = function() {
124      setTimeout(function() {
125        if (!NProgress.status) return;
126        NProgress.trickle();
127        work();
128      }, Settings.trickleSpeed);
129    };
130
131    if (Settings.trickle) work();
132
133    return this;
134  };
135
136  /**
137   * Hides the progress bar.
138   * This is the *sort of* the same as setting the status to 100%, with the
139   * difference being `done()` makes some placebo effect of some realistic motion.
140   *
141   *     NProgress.done();
142   *
143   * If `true` is passed, it will show the progress bar even if its hidden.
144   *
145   *     NProgress.done(true);
146   */
147
148  NProgress.done = function(force) {
149    if (!force && !NProgress.status) return this;
150
151    return NProgress.inc(0.3 + 0.5 * Math.random()).set(1);
152  };
153
154  /**
155   * Increments by a random amount.
156   */
157
158  NProgress.inc = function(amount) {
159    var n = NProgress.status;
160
161    if (!n) {
162      return NProgress.start();
163    } else if(n > 1) {
164      return;
165    } else {
166      if (typeof amount !== 'number') {
167        if (n >= 0 && n < 0.2) { amount = 0.1; }
168        else if (n >= 0.2 && n < 0.5) { amount = 0.04; }
169        else if (n >= 0.5 && n < 0.8) { amount = 0.02; }
170        else if (n >= 0.8 && n < 0.99) { amount = 0.005; }
171        else { amount = 0; }
172      }
173
174      n = clamp(n + amount, 0, 0.994);
175      return NProgress.set(n);
176    }
177  };
178
179  NProgress.trickle = function() {
180    return NProgress.inc();
181  };
182
183  /**
184   * Waits for all supplied jQuery promises and
185   * increases the progress as the promises resolve.
186   *
187   * @param $promise jQUery Promise
188   */
189  (function() {
190    var initial = 0, current = 0;
191
192    NProgress.promise = function($promise) {
193      if (!$promise || $promise.state() === "resolved") {
194        return this;
195      }
196
197      if (current === 0) {
198        NProgress.start();
199      }
200
201      initial++;
202      current++;
203
204      $promise.always(function() {
205        current--;
206        if (current === 0) {
207            initial = 0;
208            NProgress.done();
209        } else {
210            NProgress.set((initial - current) / initial);
211        }
212      });
213
214      return this;
215    };
216
217  })();
218
219  /**
220   * (Internal) renders the progress bar markup based on the `template`
221   * setting.
222   */
223
224  NProgress.render = function(fromStart) {
225    if (NProgress.isRendered()) return document.getElementById('nprogress');
226
227    addClass(document.documentElement, 'nprogress-busy');
228
229    var progress = document.createElement('div');
230    progress.id = 'nprogress';
231    progress.innerHTML = Settings.template;
232
233    var bar      = progress.querySelector(Settings.barSelector),
234        perc     = fromStart ? '-100' : toBarPerc(NProgress.status || 0),
235        parent   = document.querySelector(Settings.parent),
236        spinner;
237
238    css(bar, {
239      transition: 'all 0 linear',
240      transform: 'translate3d(' + perc + '%,0,0)'
241    });
242
243    if (!Settings.showSpinner) {
244      spinner = progress.querySelector(Settings.spinnerSelector);
245      spinner && removeElement(spinner);
246    }
247
248    if (parent != document.body) {
249      addClass(parent, 'nprogress-custom-parent');
250    }
251
252    parent.appendChild(progress);
253    return progress;
254  };
255
256  /**
257   * Removes the element. Opposite of render().
258   */
259
260  NProgress.remove = function() {
261    removeClass(document.documentElement, 'nprogress-busy');
262    removeClass(document.querySelector(Settings.parent), 'nprogress-custom-parent');
263    var progress = document.getElementById('nprogress');
264    progress && removeElement(progress);
265  };
266
267  /**
268   * Checks if the progress bar is rendered.
269   */
270
271  NProgress.isRendered = function() {
272    return !!document.getElementById('nprogress');
273  };
274
275  /**
276   * Determine which positioning CSS rule to use.
277   */
278
279  NProgress.getPositioningCSS = function() {
280    // Sniff on document.body.style
281    var bodyStyle = document.body.style;
282
283    // Sniff prefixes
284    var vendorPrefix = ('WebkitTransform' in bodyStyle) ? 'Webkit' :
285                       ('MozTransform' in bodyStyle) ? 'Moz' :
286                       ('msTransform' in bodyStyle) ? 'ms' :
287                       ('OTransform' in bodyStyle) ? 'O' : '';
288
289    if (vendorPrefix + 'Perspective' in bodyStyle) {
290      // Modern browsers with 3D support, e.g. Webkit, IE10
291      return 'translate3d';
292    } else if (vendorPrefix + 'Transform' in bodyStyle) {
293      // Browsers without 3D support, e.g. IE9
294      return 'translate';
295    } else {
296      // Browsers without translate() support, e.g. IE7-8
297      return 'margin';
298    }
299  };
300
301  /**
302   * Helpers
303   */
304
305  function clamp(n, min, max) {
306    if (n < min) return min;
307    if (n > max) return max;
308    return n;
309  }
310
311  /**
312   * (Internal) converts a percentage (`0..1`) to a bar translateX
313   * percentage (`-100%..0%`).
314   */
315
316  function toBarPerc(n) {
317    return (-1 + n) * 100;
318  }
319
320
321  /**
322   * (Internal) returns the correct CSS for changing the bar's
323   * position given an n percentage, and speed and ease from Settings
324   */
325
326  function barPositionCSS(n, speed, ease) {
327    var barCSS;
328
329    if (Settings.positionUsing === 'translate3d') {
330      barCSS = { transform: 'translate3d('+toBarPerc(n)+'%,0,0)' };
331    } else if (Settings.positionUsing === 'translate') {
332      barCSS = { transform: 'translate('+toBarPerc(n)+'%,0)' };
333    } else {
334      barCSS = { 'margin-left': toBarPerc(n)+'%' };
335    }
336
337    barCSS.transition = 'all '+speed+'ms '+ease;
338
339    return barCSS;
340  }
341
342  /**
343   * (Internal) Queues a function to be executed.
344   */
345
346  var queue = (function() {
347    var pending = [];
348
349    function next() {
350      var fn = pending.shift();
351      if (fn) {
352        fn(next);
353      }
354    }
355
356    return function(fn) {
357      pending.push(fn);
358      if (pending.length == 1) next();
359    };
360  })();
361
362  /**
363   * (Internal) Applies css properties to an element, similar to the jQuery
364   * css method.
365   *
366   * While this helper does assist with vendor prefixed property names, it
367   * does not perform any manipulation of values prior to setting styles.
368   */
369
370  var css = (function() {
371    var cssPrefixes = [ 'Webkit', 'O', 'Moz', 'ms' ],
372        cssProps    = {};
373
374    function camelCase(string) {
375      return string.replace(/^-ms-/, 'ms-').replace(/-([\da-z])/gi, function(match, letter) {
376        return letter.toUpperCase();
377      });
378    }
379
380    function getVendorProp(name) {
381      var style = document.body.style;
382      if (name in style) return name;
383
384      var i = cssPrefixes.length,
385          capName = name.charAt(0).toUpperCase() + name.slice(1),
386          vendorName;
387      while (i--) {
388        vendorName = cssPrefixes[i] + capName;
389        if (vendorName in style) return vendorName;
390      }
391
392      return name;
393    }
394
395    function getStyleProp(name) {
396      name = camelCase(name);
397      return cssProps[name] || (cssProps[name] = getVendorProp(name));
398    }
399
400    function applyCss(element, prop, value) {
401      prop = getStyleProp(prop);
402      element.style[prop] = value;
403    }
404
405    return function(element, properties) {
406      var args = arguments,
407          prop,
408          value;
409
410      if (args.length == 2) {
411        for (prop in properties) {
412          value = properties[prop];
413          if (value !== undefined && properties.hasOwnProperty(prop)) applyCss(element, prop, value);
414        }
415      } else {