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krn-gifv.js
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var _KRNGIFv = {
start: function(cb) {
var self = this;
if(cb) {
self.cb = cb;
}
self.video_elements = $('[data-krn-gifv="1"]');
self.isAutoPlayAthing();
},
isAutoPlayAthing: function() {
var self = this;
var src = 'data:video/mp4;base64,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';
var video_check = $('<video src="'+src+'" controls playsinline muted width="20" height="20" style="visibility:hidden; position:fixed;z-index:1000;top:0;left:0"></video>');
var brain = Cookies.get('krn_gifv_check');
if(brain) {
if(brain == 'no') {
self.fallBackPosters();
return;
}
if(brain == 'yes') {
self.autoPlayWorks();
return;
}
}
// firefox on android issue -> serve poster image
var isAndroid = navigator.userAgent.search('Android');
var isFirefox = navigator.userAgent.search('Firefox');
if(isAndroid > -1 && isFirefox > -1) {
self.fallBackPosters();
return;
}
video_check[0].onplay = function() {
self.playing = true;
};
video_check[0].oncanplay = function() {
if(!self.hasPromise && self.playing) {
self.autoPlayWorks();
}
if(!self.hasPromise && !self.playing) {
self.fallBackPosters();
}
};
self.hasPromise = false;
$('body').prepend(video_check);
play_promise = video_check[0].play();
//Modern Browser should support Promise based interface, otherwise just
//serve posters
if(play_promise !== undefined) {
self.hasPromise = true;
play_promise.then(function() {
self.autoPlayWorks();
})
.catch(function(e) {
self.fallBackPosters();
});
} else {
self.hasPromise = false;
//console.log('WAITING FOR FALLBACK METHOD');
}
},
fallBackPosters: function() {
var self = this;
Cookies.set('krn_gifv_check', 'no');
self.video_elements.each(function() {
$(this).attr('poster', $(this).data('krn-poster'));
})
},
autoPlayWorks: function() {
var self = this;
Cookies.set('krn_gifv_check', 'yes');
self.video_elements.each(function(idx) {
if(self.cb) {
if(self.cb('play', idx)) {
self.initEvent(this);
} else {
$(this).attr('poster', $(this).data('krn-poster'));
}
} else {
self.initEvent(this);
}
})
},
initEvent: function(elem) {
var self = this;
if('IntersectionObserver' in window) {
// console.log('krn-gifv:', 'intersectionobserver variante');
var videoObserver = new IntersectionObserver(function(entries, observer) {
entries.forEach(function(entry) {
var $video = $(entry.target);
var vPoster = $video.data('poster');
var vKRNPoster = $video.data('krn-poster');
var vSrc = $video.data('src');
var vAlt = $video.data('alt');
var vTitle = $video.data('title');
var vClass = $video.data('class');
var vHeight = $video.data('height');
var vWidth = $video.data('width');
var vTemplate =
'<video' +
(vPoster ? ' poster="' + vPoster + '"' : '') +
(vKRNPoster ? ' data-krn-poster="' + vKRNPoster + '"' : '') +
(vWidth ? ' width="' + vWidth + '"' : '') +
(vHeight ? ' height="' + vHeight + '"' : '') +
(vAlt ? ' alt="' + vAlt + '"' : '') +
(vTitle ? ' title="' + vTitle + '"' : '') +
(vClass ? ' class="' + vClass + '"' : '') +
' playsinline loop muted' +
'>' +
'<source' +
' type="video/mp4"' +
(vSrc ? ' src="' + vSrc + '"' : '') +
'/>' +
'</video>'
;
if(entry.isIntersecting) {
// console.log('krn-gifv:', 'play');
if(!$video.find('video').length) {
$video.html(vTemplate);
$video.find('video')[0].play();
}
} else {
// console.log('krn-gifv:', 'pause');
$video.empty();
}
});
});
var videos = [].slice.call(self.video_elements);
videos.forEach(function(video) {
videoObserver.observe(video);
});
} else {
// console.log('krn-gifv:', 'events variante');
function videoPlayPause() {
var $video = $(elem);
var vPoster = $video.data('poster');
var vKRNPoster = $video.data('krn-poster');
var vSrc = $video.data('src');
var vAlt = $video.data('alt');
var vTitle = $video.data('title');
var vClass = $video.data('class');
var vHeight = $video.data('height');
var vWidth = $video.data('width');
var vTemplate =
'<video' +
(vPoster ? ' poster="' + vPoster + '"' : '') +
(vKRNPoster ? ' data-krn-poster="' + vKRNPoster + '"' : '') +
(vWidth ? ' width="' + vWidth + '"' : '') +
(vHeight ? ' height="' + vHeight + '"' : '') +
(vAlt ? ' alt="' + vAlt + '"' : '') +
(vTitle ? ' title="' + vTitle + '"' : '') +
(vClass ? ' class="' + vClass + '"' : '') +
' playsinline loop muted' +
'>' +
'<source' +
' type="video/mp4"' +
(vSrc ? ' src="' + vSrc + '"' : '') +
'/>' +
'</video>'
;
if(self.isInViewport($video)) {
// console.log('krn-gifv:', 'play');
if(!$video.find('video').length) {
$video.html(vTemplate);
$video.find('video')[0].play();
}
} else {
// console.log('krn-gifv:', 'pause');
$video.empty();
}
}
window.addEventListener('scroll', videoPlayPause, { passive: true });
window.addEventListener('resize', videoPlayPause, { passive: true });
window.addEventListener('orientationchange', videoPlayPause, { passive: true });
}
},
isInViewport: function(elem) {
var self = this;
if(!$(elem).length) {
return false;
}
var elementTop = $(elem).offset().top;
var elementBottom = elementTop + $(elem).outerHeight();
var viewportTop = $(window).scrollTop();
var viewportBottom = viewportTop + $(window).height();
return elementBottom > viewportTop && elementTop < viewportBottom;
}
}
if(typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
module.exports = _KRNGIFv;
} else {
window.KRNGIFv = _KRNGIFv;
}