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support IntersectionObserver

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This commit is contained in:
Luke Pulverenti 2016-05-19 13:27:39 -04:00
parent 48058e8fff
commit b5883925e7
14 changed files with 165 additions and 181 deletions
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20
dashboard-ui/bower_components/emby-webcomponents/images/imagehelper.js vendored
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@ -1,4 +1,4 @@
define(['visibleinviewport', 'imageFetcher', 'layoutManager', 'events'], function (visibleinviewport, imageFetcher, layoutManager, events) {
define(['visibleinviewport', 'imageFetcher', 'layoutManager', 'events', 'browser'], function (visibleinviewport, imageFetcher, layoutManager, events, browser) {
var thresholdX;
var thresholdY;
@ -119,13 +119,29 @@ define(['visibleinviewport', 'imageFetcher', 'layoutManager', 'events'], functio
}
}
var supportsIntersectionObserver = function () {
if (window.IntersectionObserver) {
// The api exists in chrome 50 but doesn't work
if (browser.chrome) {
var version = parseInt(browser.version.split('.')[0]);
return version >= 51;
}
return true;
}
return false;
}();
function unveilElements(images) {
if (!images.length) {
return;
}
if (window.IntersectionObserver) {
if (supportsIntersectionObserver) {
unveilWithIntersection(images);
return;
}