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107 changes: 107 additions & 0 deletions src/shortcuts/infinitewithpause.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,107 @@
(function() {
'use strict'

var $ = window.jQuery
var Waypoint = window.Waypoint
var timesLoaded = 0

/* http://imakewebthings.com/waypoints/shortcuts/infinite-scroll */
function Infinite(options) {
this.options = $.extend({}, Infinite.defaults, options)
this.container = this.options.element
if (this.options.container !== 'auto') {
this.container = this.options.container
}
this.$container = $(this.container)
this.$more = $(this.options.more)

if (this.$more.length) {
this.setupHandler()
this.waypoint = new Waypoint(this.options)
}
}

/* Private */
Infinite.prototype.resetInfiniteCounter = function(){
timesLoaded = 0
}

Infinite.prototype.setupHandler = function() {
this.options.handler = $.proxy(function() {
if(this.options.pauseEvery && timesLoaded>this.options.pauseEvery-1){
this.waypoint.disable()
return null
}
this.options.onBeforePageLoad()
this.destroy()
this.$container.addClass(this.options.loadingClass)

$.get($(this.options.more).attr('href'), $.proxy(function(data) {
var $data = $($.parseHTML(data))
var $newMore = $data.find(this.options.more)
var $continueButton = $data.find(this.options.continueButton)

var $items = $data.find(this.options.items)
if (!$items.length) {
$items = $data.filter(this.options.items)
}

this.$container.append($items)
this.$container.removeClass(this.options.loadingClass)

if (!$newMore.length) {
$newMore = $data.filter(this.options.more)
}
if ($newMore.length) {
this.$more.replaceWith($newMore)
this.$more = $newMore
// Allows to pause and load under demand, x links n times
if(this.options.pauseEvery && timesLoaded>=this.options.pauseEvery-1){
$continueButton.show()
$continueButton.unbind()

$continueButton.click(function(){
infinite.resetInfiniteCounter()
infinite.waypoint.enable()
infinite.waypoint.trigger()
$continueButton.remove()
})
}else{
$continueButton.unbind()
$continueButton.remove()
}

this.waypoint = new Waypoint(this.options)
}
else {
this.$more.remove()
}

this.options.onAfterPageLoad($items)
timesLoaded++
}, this))

}, this)
}

/* Public */
Infinite.prototype.destroy = function() {
if (this.waypoint) {
this.waypoint.destroy()
}
}

Infinite.defaults = {
container: 'auto',
items: '.infinite-item',
more: '.infinite-more-link',
offset: 'bottom-in-view',
pauseEvery: null,
continueButton: '.infinite-continue-button',
loadingClass: 'infinite-loading',
onBeforePageLoad: $.noop,
onAfterPageLoad: $.noop
}

Waypoint.Infinite = Infinite
}())