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- /* NProgress, (c) 2013, 2014 Rico Sta. Cruz - http://ricostacruz.com/nprogress
- * @license MIT */
- ;(function(root, factory) {
- if (typeof define === 'function' && define.amd) {
- define(factory);
- } else if (typeof exports === 'object') {
- module.exports = factory();
- } else {
- root.NProgress = factory();
- }
- })(this, function() {
- var NProgress = {};
- NProgress.version = '0.2.0';
- var Settings = NProgress.settings = {
- minimum: 0.08,
- easing: 'linear',
- positionUsing: '',
- speed: 350,
- trickle: true,
- trickleSpeed: 250,
- showSpinner: true,
- barSelector: '[role="bar"]',
- spinnerSelector: '[role="spinner"]',
- parent: 'body',
- template: '<div class="bar" role="bar"><div class="peg"></div></div><div class="spinner" role="spinner"><div class="spinner-icon"></div></div>'
- };
- /**
- * Updates configuration.
- *
- * NProgress.configure({
- * minimum: 0.1
- * });
- */
- NProgress.configure = function(options) {
- var key, value;
- for (key in options) {
- value = options[key];
- if (value !== undefined && options.hasOwnProperty(key)) Settings[key] = value;
- }
- return this;
- };
- /**
- * Last number.
- */
- NProgress.status = null;
- /**
- * Sets the progress bar status, where `n` is a number from `0.0` to `1.0`.
- *
- * NProgress.set(0.4);
- * NProgress.set(1.0);
- */
- NProgress.set = function(n) {
- var started = NProgress.isStarted();
- n = clamp(n, Settings.minimum, 1);
- NProgress.status = (n === 1 ? null : n);
- var progress = NProgress.render(!started),
- bar = progress.querySelector(Settings.barSelector),
- speed = Settings.speed,
- ease = Settings.easing;
- progress.offsetWidth; /* Repaint */
- queue(function(next) {
- // Set positionUsing if it hasn't already been set
- if (Settings.positionUsing === '') Settings.positionUsing = NProgress.getPositioningCSS();
- // Add transition
- css(bar, barPositionCSS(n, speed, ease));
- if (n === 1) {
- // Fade out
- css(progress, {
- transition: 'none',
- opacity: 1
- });
- progress.offsetWidth; /* Repaint */
- setTimeout(function() {
- css(progress, {
- transition: 'all ' + speed + 'ms linear',
- opacity: 0
- });
- setTimeout(function() {
- NProgress.remove();
- next();
- }, speed);
- }, speed);
- } else {
- setTimeout(next, speed);
- }
- });
- return this;
- };
- NProgress.isStarted = function() {
- return typeof NProgress.status === 'number';
- };
- /**
- * Shows the progress bar.
- * This is the same as setting the status to 0%, except that it doesn't go backwards.
- *
- * NProgress.start();
- *
- */
- NProgress.start = function() {
- if (!NProgress.status) NProgress.set(0);
- var work = function() {
- setTimeout(function() {
- if (!NProgress.status) return;
- NProgress.trickle();
- work();
- }, Settings.trickleSpeed);
- };
- if (Settings.trickle) work();
- return this;
- };
- /**
- * Hides the progress bar.
- * This is the *sort of* the same as setting the status to 100%, with the
- * difference being `done()` makes some placebo effect of some realistic motion.
- *
- * NProgress.done();
- *
- * If `true` is passed, it will show the progress bar even if its hidden.
- *
- * NProgress.done(true);
- */
- NProgress.done = function(force) {
- if (!force && !NProgress.status) return this;
- return NProgress.inc(0.3 + 0.5 * Math.random()).set(1);
- };
- /**
- * Increments by a random amount.
- */
- NProgress.inc = function(amount) {
- var n = NProgress.status;
- if (!n) {
- return NProgress.start();
- } else if(n > 1) {
- return;
- } else {
- if (typeof amount !== 'number') {
- if (n >= 0 && n < 0.25) {
- // Start out between 3 - 6% increments
- amount = (Math.random() * (5 - 3 + 1) + 3) / 100;
- } else if (n >= 0.25 && n < 0.65) {
- // increment between 0 - 3%
- amount = (Math.random() * 3) / 100;
- } else if (n >= 0.65 && n < 0.9) {
- // increment between 0 - 2%
- amount = (Math.random() * 2) / 100;
- } else if (n >= 0.9 && n < 0.99) {
- // finally, increment it .5 %
- amount = 0.005;
- } else {
- // after 99%, don't increment:
- amount = 0;
- }
- }
- n = clamp(n + amount, 0, 0.994);
- return NProgress.set(n);
- }
- };
- NProgress.trickle = function() {
- return NProgress.inc();
- };
- /**
- * Waits for all supplied jQuery promises and
- * increases the progress as the promises resolve.
- *
- * @param $promise jQUery Promise
- */
- (function() {
- var initial = 0, current = 0;
- NProgress.promise = function($promise) {
- if (!$promise || $promise.state() === "resolved") {
- return this;
- }
- if (current === 0) {
- NProgress.start();
- }
- initial++;
- current++;
- $promise.always(function() {
- current--;
- if (current === 0) {
- initial = 0;
- NProgress.done();
- } else {
- NProgress.set((initial - current) / initial);
- }
- });
- return this;
- };
- })();
- /**
- * (Internal) renders the progress bar markup based on the `template`
- * setting.
- */
- NProgress.render = function(fromStart) {
- if (NProgress.isRendered()) return document.getElementById('nprogress');
- addClass(document.documentElement, 'nprogress-busy');
- var progress = document.createElement('div');
- progress.id = 'nprogress';
- progress.innerHTML = Settings.template;
- var bar = progress.querySelector(Settings.barSelector),
- perc = fromStart ? '-100' : toBarPerc(NProgress.status || 0),
- parent = document.querySelector(Settings.parent),
- spinner;
- css(bar, {
- transition: 'all 0 linear',
- transform: 'translate3d(' + perc + '%,0,0)'
- });
- if (!Settings.showSpinner) {
- spinner = progress.querySelector(Settings.spinnerSelector);
- spinner && removeElement(spinner);
- }
- if (parent != document.body) {
- addClass(parent, 'nprogress-custom-parent');
- }
- parent.appendChild(progress);
- return progress;
- };
- /**
- * Removes the element. Opposite of render().
- */
- NProgress.remove = function() {
- removeClass(document.documentElement, 'nprogress-busy');
- removeClass(document.querySelector(Settings.parent), 'nprogress-custom-parent');
- var progress = document.getElementById('nprogress');
- progress && removeElement(progress);
- };
- /**
- * Checks if the progress bar is rendered.
- */
- NProgress.isRendered = function() {
- return !!document.getElementById('nprogress');
- };
- /**
- * Determine which positioning CSS rule to use.
- */
- NProgress.getPositioningCSS = function() {
- // Sniff on document.body.style
- var bodyStyle = document.body.style;
- // Sniff prefixes
- var vendorPrefix = ('WebkitTransform' in bodyStyle) ? 'Webkit' :
- ('MozTransform' in bodyStyle) ? 'Moz' :
- ('msTransform' in bodyStyle) ? 'ms' :
- ('OTransform' in bodyStyle) ? 'O' : '';
- if (vendorPrefix + 'Perspective' in bodyStyle) {
- // Modern browsers with 3D support, e.g. Webkit, IE10
- return 'translate3d';
- } else if (vendorPrefix + 'Transform' in bodyStyle) {
- // Browsers without 3D support, e.g. IE9
- return 'translate';
- } else {
- // Browsers without translate() support, e.g. IE7-8
- return 'margin';
- }
- };
- /**
- * Helpers
- */
- function clamp(n, min, max) {
- if (n < min) return min;
- if (n > max) return max;
- return n;
- }
- /**
- * (Internal) converts a percentage (`0..1`) to a bar translateX
- * percentage (`-100%..0%`).
- */
- function toBarPerc(n) {
- return (-1 + n) * 100;
- }
- /**
- * (Internal) returns the correct CSS for changing the bar's
- * position given an n percentage, and speed and ease from Settings
- */
- function barPositionCSS(n, speed, ease) {
- var barCSS;
- if (Settings.positionUsing === 'translate3d') {
- barCSS = { transform: 'translate3d('+toBarPerc(n)+'%,0,0)' };
- } else if (Settings.positionUsing === 'translate') {
- barCSS = { transform: 'translate('+toBarPerc(n)+'%,0)' };
- } else {
- barCSS = { 'margin-left': toBarPerc(n)+'%' };
- }
- barCSS.transition = 'all '+speed+'ms '+ease;
- return barCSS;
- }
- /**
- * (Internal) Queues a function to be executed.
- */
- var queue = (function() {
- var pending = [];
- function next() {
- var fn = pending.shift();
- if (fn) {
- fn(next);
- }
- }
- return function(fn) {
- pending.push(fn);
- if (pending.length == 1) next();
- };
- })();
- /**
- * (Internal) Applies css properties to an element, similar to the jQuery
- * css method.
- *
- * While this helper does assist with vendor prefixed property names, it
- * does not perform any manipulation of values prior to setting styles.
- */
- var css = (function() {
- var cssPrefixes = [ 'Webkit', 'O', 'Moz', 'ms' ],
- cssProps = {};
- function camelCase(string) {
- return string.replace(/^-ms-/, 'ms-').replace(/-([\da-z])/gi, function(match, letter) {
- return letter.toUpperCase();
- });
- }
- function getVendorProp(name) {
- var style = document.body.style;
- if (name in style) return name;
- var i = cssPrefixes.length,
- capName = name.charAt(0).toUpperCase() + name.slice(1),
- vendorName;
- while (i--) {
- vendorName = cssPrefixes[i] + capName;
- if (vendorName in style) return vendorName;
- }
- return name;
- }
- function getStyleProp(name) {
- name = camelCase(name);
- return cssProps[name] || (cssProps[name] = getVendorProp(name));
- }
- function applyCss(element, prop, value) {
- prop = getStyleProp(prop);
- element.style[prop] = value;
- }
- return function(element, properties) {
- var args = arguments,
- prop,
- value;
- if (args.length == 2) {
- for (prop in properties) {
- value = properties[prop];
- if (value !== undefined && properties.hasOwnProperty(prop)) applyCss(element, prop, value);
- }
- } else {
- applyCss(element, args[1], args[2]);
- }
- }
- })();
- /**
- * (Internal) Determines if an element or space separated list of class names contains a class name.
- */
- function hasClass(element, name) {
- var list = typeof element == 'string' ? element : classList(element);
- return list.indexOf(' ' + name + ' ') >= 0;
- }
- /**
- * (Internal) Adds a class to an element.
- */
- function addClass(element, name) {
- var oldList = classList(element),
- newList = oldList + name;
- if (hasClass(oldList, name)) return;
- // Trim the opening space.
- element.className = newList.substring(1);
- }
- /**
- * (Internal) Removes a class from an element.
- */
- function removeClass(element, name) {
- var oldList = classList(element),
- newList;
- if (!hasClass(element, name)) return;
- // Replace the class name.
- newList = oldList.replace(' ' + name + ' ', ' ');
- // Trim the opening and closing spaces.
- element.className = newList.substring(1, newList.length - 1);
- }
- /**
- * (Internal) Gets a space separated list of the class names on the element.
- * The list is wrapped with a single space on each end to facilitate finding
- * matches within the list.
- */
- function classList(element) {
- return (' ' + (element && element.className || '') + ' ').replace(/\s+/gi, ' ');
- }
- /**
- * (Internal) Removes an element from the DOM.
- */
- function removeElement(element) {
- element && element.parentNode && element.parentNode.removeChild(element);
- }
- return NProgress;
- });
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