98 lines
3.1 KiB
JavaScript
98 lines
3.1 KiB
JavaScript
/*
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* The stripe loading indicator.
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*
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* Displays the animated loading indicator stripe at the top of the page.
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*
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* JavaScript API:
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* $.oc.stripeLoadIndicator.show(event)
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* $.oc.stripeLoadIndicator.hide()
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*
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* By default if the show() method has been called several times, the hide() method should be
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* called the same number of times in order to hide the stripe. Use hide(true) to hide the
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* indicator forcibly.
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*/
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+function ($) { "use strict";
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if ($.oc === undefined)
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$.oc = {}
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var StripeLoadIndicator = function () {
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var self = this
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this.counter = 0
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this.indicator = this.makeIndicator()
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this.stripe = this.indicator.find('.stripe')
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this.animationTimer = null
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$(document).ready(function(){
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$(document.body).append(self.indicator)
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})
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}
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StripeLoadIndicator.prototype.makeIndicator = function() {
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return $('<div/>')
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.addClass('stripe-loading-indicator loaded')
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.append($('<div />').addClass('stripe'))
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.append($('<div />').addClass('stripe-loaded'))
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}
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StripeLoadIndicator.prototype.show = function() {
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window.clearTimeout(this.animationTimer)
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this.indicator.show()
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this.counter++
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// Restart the animation
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this.stripe.after(this.stripe = this.stripe.clone()).remove()
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if (this.counter > 1) {
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return
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}
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this.indicator.removeClass('loaded')
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$(document.body).addClass('loading')
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}
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StripeLoadIndicator.prototype.hide = function(force) {
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this.counter--
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if (force !== undefined && force) {
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this.counter = 0
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}
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if (this.counter <= 0) {
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this.indicator.addClass('loaded')
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$(document.body).removeClass('loading')
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// Stripe should be hidden using `display: none` because leaving the animated
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// element in the rendering tree, even invisible, affects performance.
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var self = this
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this.animationTimer = window.setTimeout(function() {
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self.indicator.hide()
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}, 1000)
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}
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}
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$.oc.stripeLoadIndicator = new StripeLoadIndicator()
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// STRIPE LOAD INDICATOR DATA-API
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// ==============
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$(document)
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.on('ajaxPromise', '[data-stripe-load-indicator]', function(event) {
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// Prevent this event from bubbling up to a non-related data-request
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// element, for example a <form> tag wrapping a <button> tag
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event.stopPropagation()
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$.oc.stripeLoadIndicator.show()
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// This code will cover instances where the element has been removed
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// from the DOM, making the resolution event below an orphan.
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var $el = $(this)
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$(window).one('ajaxUpdateComplete', function(){
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if ($el.closest('html').length === 0)
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$.oc.stripeLoadIndicator.hide()
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})
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}).on('ajaxFail ajaxDone', '[data-stripe-load-indicator]', function(event) {
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event.stopPropagation()
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$.oc.stripeLoadIndicator.hide()
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})
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}(window.jQuery); |