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Bootstrap/js/dist/util.js

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/**
* --------------------------------------------------------------------------
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* Bootstrap (v4.1.1): util.js
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* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* --------------------------------------------------------------------------
*/
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var Util = function ($) {
/**
* ------------------------------------------------------------------------
* Private TransitionEnd Helpers
* ------------------------------------------------------------------------
*/
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var TRANSITION_END = 'transitionend';
var MAX_UID = 1000000;
var MILLISECONDS_MULTIPLIER = 1000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)
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function toType(obj) {
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return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
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}
function getSpecialTransitionEndEvent() {
return {
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bindType: TRANSITION_END,
delegateType: TRANSITION_END,
handle: function handle(event) {
if ($(event.target).is(this)) {
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return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params
}
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return undefined; // eslint-disable-line no-undefined
}
};
}
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function transitionEndEmulator(duration) {
var _this = this;
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var called = false;
$(this).one(Util.TRANSITION_END, function () {
called = true;
});
setTimeout(function () {
if (!called) {
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Util.triggerTransitionEnd(_this);
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}
}, duration);
return this;
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}
function setTransitionEndSupport() {
$.fn.emulateTransitionEnd = transitionEndEmulator;
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$.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();
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}
/**
* --------------------------------------------------------------------------
* Public Util Api
* --------------------------------------------------------------------------
*/
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var Util = {
TRANSITION_END: 'bsTransitionEnd',
getUID: function getUID(prefix) {
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do {
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// eslint-disable-next-line no-bitwise
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prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
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} while (document.getElementById(prefix));
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return prefix;
},
getSelectorFromElement: function getSelectorFromElement(element) {
var selector = element.getAttribute('data-target');
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if (!selector || selector === '#') {
selector = element.getAttribute('href') || '';
}
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try {
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return document.querySelector(selector) ? selector : null;
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} catch (err) {
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return null;
}
},
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getTransitionDurationFromElement: function getTransitionDurationFromElement(element) {
if (!element) {
return 0;
} // Get transition-duration of the element
var transitionDuration = $(element).css('transition-duration');
var floatTransitionDuration = parseFloat(transitionDuration); // Return 0 if element or transition duration is not found
if (!floatTransitionDuration) {
return 0;
} // If multiple durations are defined, take the first
transitionDuration = transitionDuration.split(',')[0];
return parseFloat(transitionDuration) * MILLISECONDS_MULTIPLIER;
},
reflow: function reflow(element) {
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return element.offsetHeight;
},
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triggerTransitionEnd: function triggerTransitionEnd(element) {
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$(element).trigger(TRANSITION_END);
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},
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// TODO: Remove in v5
supportsTransitionEnd: function supportsTransitionEnd() {
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return Boolean(TRANSITION_END);
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},
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isElement: function isElement(obj) {
return (obj[0] || obj).nodeType;
},
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typeCheckConfig: function typeCheckConfig(componentName, config, configTypes) {
for (var property in configTypes) {
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if (Object.prototype.hasOwnProperty.call(configTypes, property)) {
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var expectedTypes = configTypes[property];
var value = config[property];
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var valueType = value && Util.isElement(value) ? 'element' : toType(value);
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if (!new RegExp(expectedTypes).test(valueType)) {
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throw new Error(componentName.toUpperCase() + ": " + ("Option \"" + property + "\" provided type \"" + valueType + "\" ") + ("but expected type \"" + expectedTypes + "\"."));
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}
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}
}
}
};
setTransitionEndSupport();
return Util;
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}($);
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//# sourceMappingURL=util.js.map