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Trigger native scrolling support for mobile devices #6

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Trigger native scrolling support for mobile devices #6

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1 change: 1 addition & 0 deletions css/trackpad-scroll-emulator.css
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
width: 200px; /* Default value. Overwite this if you want. */
height: 300px; /* Default value. Overwite this if you want. */
overflow: hidden;
-webkit-overflow-scrolling: touch; /* Trigger native scrolling for mobile, if not supported, plugin is used. */
}
.tse-scrollable .tse-scroll-content {
overflow: hidden;
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47 changes: 47 additions & 0 deletions jquery.trackpad-scroll-emulator.js
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,12 @@
* Initialize plugin
*/
function init() {
if(hasOverflowScrolling()) {
$el.css('overflow', 'auto');

return;
}

if ($el.hasClass('horizontal')){
scrollDirection = 'horiz';
scrollOffsetAttr = 'scrollLeft';
Expand Down Expand Up @@ -270,6 +276,47 @@
}
}

/**
* Check for mobile Overflow scrolling support
* Source: https://gist.github.com/hay/4032527
*/
function hasOverflowScrolling() {
var prefixes = ['webkit', 'moz', 'o', 'ms'];
var div = document.createElement('div');
var body = document.getElementsByTagName('body')[0];
var hasIt = false;

body.appendChild(div);

for (var i = 0; i < prefixes.length; i++) {
var prefix = prefixes[i];
div.style[prefix + 'OverflowScrolling'] = 'touch';
}

// And the non-prefixed property
div.style.overflowScrolling = 'touch';

// Now check the properties
var computedStyle = window.getComputedStyle(div);

// First non-prefixed
hasIt = !!computedStyle.overflowScrolling;

// Now prefixed...
for (var i = 0; i < prefixes.length; i++) {
var prefix = prefixes[i];
if (!!computedStyle[prefix + 'OverflowScrolling']) {
hasIt = true;
break;
}
}

// Cleanup old div elements
div.parentNode.removeChild(div);

return hasIt;
}

init();

return {
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