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Removed obsolete file

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Signed-off-by: Jim Martens <github@2martens.de>
This commit is contained in:
Jim Martens
2019-02-27 02:08:11 +01:00
parent b08a079064
commit 3f60734a62
1 changed files with 0 additions and 137 deletions
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137
_assets/javascripts/global/echo.js
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@ -1,137 +0,0 @@
/*! echo-js v1.7.3 | (c) 2016 @toddmotto | https://github.com/toddmotto/echo */
/*global define */
/*global module */
(function (root, factory) {
if (typeof define === "function" && define.amd) {
define(function() {
return factory(root);
});
} else if (typeof exports === "object") {
module.exports = factory;
} else {
root.echo = factory(root);
}
})(this, function (root) {
"use strict";
let echo = {};
let callback = function () {};
let offset, poll, delay, useDebounce, unload;
let isHidden = function (element) {
return (element.offsetParent === null);
};
let inView = function (element, view) {
if (isHidden(element)) {
return false;
}
let box = element.getBoundingClientRect();
return (box.right >= view.l && box.bottom >= view.t && box.left <= view.r && box.top <= view.b);
};
let debounceOrThrottle = function () {
if(!useDebounce && !!poll) {
return;
}
clearTimeout(poll);
poll = setTimeout(function(){
echo.render();
poll = null;
}, delay);
};
echo.init = function (opts) {
opts = opts || {};
let offsetAll = opts.offset || 0;
let offsetVertical = opts.offsetVertical || offsetAll;
let offsetHorizontal = opts.offsetHorizontal || offsetAll;
let optionToInt = function (opt, fallback) {
return parseInt(opt || fallback, 10);
};
offset = {
t: optionToInt(opts.offsetTop, offsetVertical),
b: optionToInt(opts.offsetBottom, offsetVertical),
l: optionToInt(opts.offsetLeft, offsetHorizontal),
r: optionToInt(opts.offsetRight, offsetHorizontal)
};
delay = optionToInt(opts.throttle, 250);
useDebounce = opts.debounce !== false;
unload = !!opts.unload;
callback = opts.callback || callback;
echo.render();
if (document.addEventListener) {
root.addEventListener("scroll", debounceOrThrottle, false);
root.addEventListener("load", debounceOrThrottle, false);
} else {
root.attachEvent("onscroll", debounceOrThrottle);
root.attachEvent("onload", debounceOrThrottle);
}
};
echo.render = function (context) {
let nodes = (context || document).querySelectorAll("[data-echo], [data-echo-background]");
let length = nodes.length;
let src, elem;
let view = {
l: 0 - offset.l,
t: 0 - offset.t,
b: (root.innerHeight || document.documentElement.clientHeight) + offset.b,
r: (root.innerWidth || document.documentElement.clientWidth) + offset.r
};
for (let i = 0; i < length; i++) {
elem = nodes[i];
if (inView(elem, view)) {
if (unload) {
elem.setAttribute("data-echo-placeholder", elem.src);
}
if (elem.getAttribute("data-echo-background") !== null) {
elem.style.backgroundImage = "url(" + elem.getAttribute("data-echo-background") + ")";
}
else if (elem.src !== (src = elem.getAttribute("data-echo"))) {
elem.src = src;
}
if (!unload) {
elem.removeAttribute("data-echo");
elem.removeAttribute("data-echo-background");
}
callback(elem, "load");
}
else if (unload && !!(src = elem.getAttribute("data-echo-placeholder"))) {
if (elem.getAttribute("data-echo-background") !== null) {
elem.style.backgroundImage = "url(" + src + ")";
}
else {
elem.src = src;
}
elem.removeAttribute("data-echo-placeholder");
callback(elem, "unload");
}
}
if (!length) {
echo.detach();
}
};
echo.detach = function () {
if (document.removeEventListener) {
root.removeEventListener("scroll", debounceOrThrottle);
} else {
root.detachEvent("onscroll", debounceOrThrottle);
}
clearTimeout(poll);
};
return echo;
});