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Copyright 2011-2024 <copyright holders>.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/**
* SPDX-License-Identifier: MIT
* _addText: '{{Gadget Header|license=MIT}}'
*
* @source <https://zh.moegirl.org.cn/MediaWiki:Gadget-jQueryLazyload.js>
* @author AnnAngela <https://github.com/AnnAngela>, ColGem <https://youshou.wiki/wiki/User:ColGem>
*/
/**
* +--------------------------------------------------------+
* | === WARNING: GLOBAL GADGET FILE === |
* +--------------------------------------------------------+
* | All changes should be made in the repository, |
* | otherwise they will be lost. |
* +--------------------------------------------------------+
* | Changes to this page may affect many users. |
* | Please discuss changes at talk page before editing. |
* +--------------------------------------------------------+
*/
/* <nowiki> */
"use strict";
var __read = void 0 && (void 0).__read || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o),
r,
ar = [],
e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
} catch (error) {
e = {
error: error
};
} finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
} finally {
if (e) throw e.error;
}
}
return ar;
};
var __spreadArray = void 0 && (void 0).__spreadArray || function (to, from, pack) {
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
if (ar || !(i in from)) {
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
ar[i] = from[i];
}
}
return to.concat(ar || Array.prototype.slice.call(from));
};
var __values = void 0 && (void 0).__values || function (o) {
var s = typeof Symbol === "function" && Symbol.iterator,
m = s && o[s],
i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function next() {
if (o && i >= o.length) o = void 0;
return {
value: o && o[i++],
done: !o
};
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
(function () {
var defaults = {
src: "data-src",
srcset: "data-srcset",
selector: ".lazyload",
root: null,
rootMargin: "0px",
threshold: 0
};
var extend = function extend(_deep) {
var e_1, _a;
var _args = [];
for (var _i = 1; _i < arguments.length; _i++) {
_args[_i - 1] = arguments[_i];
}
var extended = {};
var deep = typeof _deep === "boolean" ? _deep : false;
var args = __spreadArray(__spreadArray([], __read(typeof _deep !== "boolean" ? [_deep] : []), false), __read(_args), false);
var merge = function merge(obj) {
for (var prop in obj) {
if (Object.prototype.hasOwnProperty.bind(obj)(prop)) {
if (deep && Object.prototype.toString.bind(obj[prop])() === "[object Object]") {
extended[prop] = extend(true, extended[prop], obj[prop]);
} else {
extended[prop] = obj[prop];
}
}
}
};
try {
for (var args_1 = __values(args), args_1_1 = args_1.next(); !args_1_1.done; args_1_1 = args_1.next()) {
var obj = args_1_1.value;
merge(obj);
}
} catch (e_1_1) {
e_1 = {
error: e_1_1
};
} finally {
try {
if (args_1_1 && !args_1_1.done && (_a = args_1["return"])) _a.call(args_1);
} finally {
if (e_1) throw e_1.error;
}
}
return extended;
};
var LazyLoad = function () {
function LazyLoad(images, options) {
this.settings = extend(defaults, options || {});
this.images = images || document.querySelectorAll(this.settings.selector);
this.observer = null;
this.init();
}
LazyLoad.prototype.init = function () {
if (!window.IntersectionObserver) {
this.loadImages();
return;
}
var self = this;
var observerConfig = {
root: this.settings.root,
rootMargin: this.settings.rootMargin,
threshold: [this.settings.threshold]
};
this.observer = new IntersectionObserver(function (entries) {
Array.prototype.forEach.bind(entries)(function (entry) {
if (entry.isIntersecting) {
self.observer.unobserve(entry.target);
var src = entry.target.getAttribute(self.settings.src);
var srcset = entry.target.getAttribute(self.settings.srcset);
if ("img" === entry.target.tagName.toLowerCase()) {
if (src) {
entry.target.src = src;
}
if (srcset) {
entry.target.srcset = srcset;
}
} else {
entry.target.style.backgroundImage = "url(".concat(src, ")");
}
}
});
}, observerConfig);
Array.prototype.forEach.bind(this.images)(function (image) {
self.observer.observe(image);
});
};
LazyLoad.prototype.loadAndDestroy = function () {
if (!this.settings) {
return;
}
this.loadImages();
this.destroy();
};
LazyLoad.prototype.loadImages = function () {
if (!this.settings) {
return;
}
var self = this;
Array.prototype.forEach.bind(this.images)(function (image) {
var src = image.getAttribute(self.settings.src);
var srcset = image.getAttribute(self.settings.srcset);
if ("img" === image.tagName.toLowerCase()) {
if (src) {
image.src = src;
}
if (srcset) {
image.srcset = srcset;
}
} else {
image.style.backgroundImage = "url('".concat(src, "')");
}
});
};
LazyLoad.prototype.destroy = function () {
if (!this.settings) {
return;
}
this.observer.disconnect();
this.settings = null;
};
return LazyLoad;
}();
window.lazyload = function (images, options) {
return new LazyLoad(images, options);
};
if (window.jQuery) {
jQuery.fn.lazyload = function (_options) {
var options = _options || {};
options.attribute || (options.attribute = "data-src");
new LazyLoad(this.toArray(), options);
return this;
};
}
})();
/* </nowiki> */