Elgg  Version 4.3
ajax-append-auto.js
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1 
4 define(['jquery', 'page/components/list/ajax-append'], function ($) {
5 
6  var debounceTimeout;
7 
8  // Returns a function, that, as long as it continues to be invoked, will not
9  // be triggered. The function will be called after it stops being called for
10  // N milliseconds. If `immediate` is passed, trigger the function on the
11  // leading edge, instead of the trailing.
12  function debounce(func, wait, immediate) {
13  return function() {
14  var context = this, args = arguments;
15  var later = function() {
16  debounceTimeout = null;
17  if (!immediate) func.apply(context, args);
18  };
19  var callNow = immediate && !timeout;
20  clearTimeout(debounceTimeout);
21  debounceTimeout = setTimeout(later, wait);
22  if (callNow) func.apply(context, args);
23  };
24  };
25 
26  function checkScroll() {
27  var $elem = $('.elgg-list-container-ajax-append-auto .elgg-pagination-next > a:visible');
28  if (!$elem.length) {
29  return;
30  }
31 
32  var docViewTop = $(window).scrollTop();
33  var docViewBottom = docViewTop + $(window).height() + 500; // make screen larger to prevent button from coming into view
34 
35  var elemTop = $elem.offset().top;
36  var elemBottom = elemTop + $elem.height();
37 
38  if ((elemBottom <= docViewBottom) && (elemTop >= docViewTop)) {
39  $elem.click();
40  }
41  };
42 
43  $(document).off('scroll.ajax-append-auto');
44  $(document).on('scroll.ajax-append-auto', debounce(checkScroll, 100));
45 });
define(['jquery', 'page/components/list/ajax-append'], function($){var debounceTimeout;function debounce(func, wait, immediate){return function(){var context=this, args=arguments;var later=function(){debounceTimeout=null;if(!immediate) func.apply(context, args);};var callNow=immediate &&!timeout;clearTimeout(debounceTimeout);debounceTimeout=setTimeout(later, wait);if(callNow) func.apply(context, args);};};function checkScroll(){var $elem=$('.elgg-list-container-ajax-append-auto.elgg-pagination-next > a:visible');if(!$elem.length){return;}var docViewTop=$(window).scrollTop();var docViewBottom=docViewTop+$(window).height()+500;var elemTop=$elem.offset().top;var elemBottom=elemTop+$elem.height();if((elemBottom<=docViewBottom)&&(elemTop >=docViewTop)){$elem.click();}};$(document).off('scroll.ajax-append-auto');$(document).on('scroll.ajax-append-auto', debounce(checkScroll, 100));})
Ajax lists - append behaviour with auto click if next navigation scrolls into window.
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Definition: LICENSE.txt:96