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twbs--bootstrap/js/util.js
2015-02-11 11:29:43 -08:00

165 lines
3.6 KiB
JavaScript

/** =======================================================================
* Bootstrap: util.js v4.0.0
* http://getbootstrap.com/javascript/#alerts
* ========================================================================
* Copyright 2011-2015 Twitter, Inc.
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
* ========================================================================
* @fileoverview - Bootstrap's private util helper. Adds private util
* helpers for things like accesibility and transitions. These methods are
* shared across all bootstrap plugins.
* ========================================================================
*/
'use strict';
/**
* @type {Object}
*/
var Bootstrap = {}
/**
* @const
* @type {string}
*/
Bootstrap.TRANSITION_END = 'bsTransitionEnd'
/**
* @const
* @type {Object}
*/
Bootstrap.TransitionEndEvent = {
'WebkitTransition' : 'webkitTransitionEnd',
'MozTransition' : 'transitionend',
'OTransition' : 'oTransitionEnd otransitionend',
'transition' : 'transitionend'
}
/**
* @param {Function} childConstructor
* @param {Function} parentConstructor
*/
Bootstrap.inherits = function(childConstructor, parentConstructor) {
/** @constructor */
function tempConstructor() {}
tempConstructor.prototype = parentConstructor.prototype
childConstructor.prototype = new tempConstructor()
/** @override */
childConstructor.prototype.constructor = childConstructor
}
/**
* @param {Element} element
* @return {string|null}
*/
Bootstrap.getSelectorFromElement = function (element) {
var selector = element.getAttribute('data-target')
if (!selector) {
selector = element.getAttribute('href') || ''
selector = /^#[a-z]/i.test(selector) ? selector : null
}
return selector
}
/**
* @param {string} prefix
* @return {string}
*/
Bootstrap.getUID = function (prefix) {
do prefix += ~~(Math.random() * 1000000)
while (document.getElementById(prefix))
return prefix
}
/**
* @return {Object}
*/
Bootstrap.getSpecialTransitionEndEvent = function () {
return {
bindType: Bootstrap.transition.end,
delegateType: Bootstrap.transition.end,
handle: /** @param {jQuery.Event} event */ (function (event) {
if ($(event.target).is(this)) {
return event.handleObj.handler.apply(this, arguments)
}
})
}
}
/**
* @param {Element} element
*/
Bootstrap.reflow = function (element) {
new Function('bs',"return bs")(element.offsetHeight)
}
/**
* @return {Object|boolean}
*/
Bootstrap.transitionEndTest = function () {
if (window['QUnit']) {
return false
}
var el = document.createElement('bootstrap')
for (var name in Bootstrap.TransitionEndEvent) {
if (el.style[name] !== undefined) {
return { end: Bootstrap.TransitionEndEvent[name] }
}
}
return false
}
/**
* @param {number} duration
* @this {Element}
* @return {Object}
*/
Bootstrap.transitionEndEmulator = function (duration) {
var called = false
$(this).one(Bootstrap.TRANSITION_END, function () {
called = true
})
var callback = function () {
if (!called) {
$(this).trigger(Bootstrap.transition.end)
}
}.bind(this)
setTimeout(callback, duration)
return this
}
/**
* ------------------------------------------------------------------------
* jQuery Interface
* ------------------------------------------------------------------------
*/
$.fn.emulateTransitionEnd = Bootstrap.transitionEndEmulator
$(function () {
Bootstrap.transition = Bootstrap.transitionEndTest()
if (!Bootstrap.transition) {
return
}
$.event.special[Bootstrap.TRANSITION_END] = Bootstrap.getSpecialTransitionEndEvent()
})