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Added autoTriggerRateLimit, autoTriggerPauseUntilLoaded functionality… #174

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Added autoTriggerRateLimit, autoTriggerPauseUntilLoaded functionality… #174

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40 changes: 36 additions & 4 deletions jquery.jscroll.js
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,9 @@
debug: false,
autoTrigger: true,
autoTriggerUntil: false,
autoTriggerRateLimit: 1000,
autoTriggerLastFiredAt: null,
autoTriggerPauseUntilLoaded: true,
loadingHtml: '<small>Loading...</small>',
loadingFunction: false,
padding: 0,
Expand Down Expand Up @@ -144,10 +147,36 @@

// Load the next set of content, if available
_load = function() {
var $inner = $e.find('div.jscroll-inner').first(),
data = $e.data('jscroll');

data.waiting = true;
// Respect rate limits, if set...
if(_options.autoTriggerRateLimit !== false) {

let now = new Date().valueOf();

if( now < _options.autoTriggerLastFiredAt + _options.autoTriggerLastFiredAt ) {
return; // Exit early and avoid preemptive overhead.
} else {
_options.autoTriggerLastFiredAt = now;
}
}

var $inner = $e.find('div.jscroll-inner').first();

// Check that any images in currently enqueued elements have completed loading...
if(_options.autoTriggerPauseUntilLoaded === true ){
let enquedImages = $inner.find('img');
if( enquedImages.length ) {
for (var i = enquedImages.length - 1; i >= 0; i--){
if(!enquedImages[i].complete){
return _debug('autoTriggerAborted', '-- Still Loading Images --');
}
}
}
}

var data = $e.data('jscroll');
data.waiting = true;

$inner.append('<div class="jscroll-added" />')
.children('.jscroll-added').last()
.html('<div class="jscroll-loading" id="jscroll-loading">' + _options.loadingHtml + '</div>')
Expand All @@ -158,6 +187,9 @@
}
});


if($e.find('div.jscroll-inner').first())

return $e.animate({scrollTop: $inner.outerHeight()}, 0, function() {
var nextHref = data.nextHref;
$inner.find('div.jscroll-added').last().load(nextHref, function(r, status) {
Expand Down Expand Up @@ -223,4 +255,4 @@
});
};

})(jQuery);
})(jQuery);