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Directory >> /home/stfcnsvu/public_html/wp-content/plugins/wp-rocket/assets/js/lazyload/16.1/

File / Folder	Size	Action
.	-
.htaccess	0.41KB	edt ren
lazyload.js	24.417KB	edt ren
lazyload.min.js	7.705KB	edt ren

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = global || self, global.LazyLoad = factory());
}(this, (function () { 'use strict';

function _extends() {
    _extends = Object.assign || function (target) {
      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];

for (var key in source) {
          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }

return target;
    };

return _extends.apply(this, arguments);
  }

var runningOnBrowser = typeof window !== "undefined";
  var isBot = runningOnBrowser && !("onscroll" in window) || typeof navigator !== "undefined" && /(gle|ing|ro)bot|crawl|spider/i.test(navigator.userAgent);
  var supportsIntersectionObserver = runningOnBrowser && "IntersectionObserver" in window;
  var supportsClassList = runningOnBrowser && "classList" in document.createElement("p");
  var isHiDpi = runningOnBrowser && window.devicePixelRatio > 1;

/* Creates instance and notifies it through the window element */
  var createInstance = function createInstance(classObj, options) {
    var event;
    var eventString = "LazyLoad::Initialized";
    var instance = new classObj(options);

try {
      // Works in modern browsers
      event = new CustomEvent(eventString, {
        detail: {
          instance: instance
        }
      });
    } catch (err) {
      // Works in Internet Explorer (all versions)
      event = document.createEvent("CustomEvent");
      event.initCustomEvent(eventString, false, false, {
        instance: instance
      });
    }

window.dispatchEvent(event);
  };
  /* Auto initialization of one or more instances of lazyload, depending on the 
      options passed in (plain object or an array) */

var autoInitialize = function autoInitialize(classObj, options) {
    if (!options) {
      return;
    }

if (!options.length) {
      // Plain object
      createInstance(classObj, options);
    } else {
      // Array of objects
      for (var i = 0, optionsItem; optionsItem = options[i]; i += 1) {
        createInstance(classObj, optionsItem);
      }
    }
  };

var statusLoading = "loading";
  var statusLoaded = "loaded";
  var statusApplied = "applied";
  var statusError = "error";
  var statusNative = "native";

var dataPrefix = "data-";
  var statusDataName = "ll-status";
  var getData = function getData(element, attribute) {
    return element.getAttribute(dataPrefix + attribute);
  };
  var setData = function setData(element, attribute, value) {
    var attrName = dataPrefix + attribute;

if (value === null) {
      element.removeAttribute(attrName);
      return;
    }

element.setAttribute(attrName, value);
  };
  var getStatus = function getStatus(element) {
    return getData(element, statusDataName);
  };
  var setStatus = function setStatus(element, status) {
    return setData(element, statusDataName, status);
  };
  var resetStatus = function resetStatus(element) {
    return setStatus(element, null);
  };
  var hasEmptyStatus = function hasEmptyStatus(element) {
    return getStatus(element) === null;
  };
  var hasStatusLoading = function hasStatusLoading(element) {
    return getStatus(element) === statusLoading;
  };
  var hasStatusError = function hasStatusError(element) {
    return getStatus(element) === statusError;
  };
  var hasStatusNative = function hasStatusNative(element) {
    return getStatus(element) === statusNative;
  };
  var hadStartedLoading = function hadStartedLoading(element) {
    return !hasEmptyStatus(element);
  };

var safeCallback = function safeCallback(callback, arg1, arg2, arg3) {
    if (!callback) {
      return;
    }

if (arg3 !== undefined) {
      callback(arg1, arg2, arg3);
      return;
    }

if (arg2 !== undefined) {
      callback(arg1, arg2);
      return;
    }

callback(arg1);
  };

var addClass = function addClass(element, className) {
    if (supportsClassList) {
      element.classList.add(className);
      return;
    }

element.className += (element.className ? " " : "") + className;
  };
  var removeClass = function removeClass(element, className) {
    if (supportsClassList) {
      element.classList.remove(className);
      return;
    }

element.className = element.className.replace(new RegExp("(^|\\s+)" + className + "(\\s+|$)"), " ").replace(/^\s+/, "").replace(/\s+$/, "");
  };

var getSourceTags = function getSourceTags(parentTag) {
    var sourceTags = [];

for (var i = 0, childTag; childTag = parentTag.children[i]; i += 1) {
      if (childTag.tagName === "SOURCE") {
        sourceTags.push(childTag);
      }
    }

return sourceTags;
  };
  var setAttributeIfValue = function setAttributeIfValue(element, attrName, value) {
    if (!value) {
      return;
    }

element.setAttribute(attrName, value);
  };
  var resetAttribute = function resetAttribute(element, attrName) {
    element.removeAttribute(attrName);
  };
  var hasOriginalAttributes = function hasOriginalAttributes(element) {
    return !!element.llOriginalAttrs;
  };
  var saveOriginalImageAttributes = function saveOriginalImageAttributes(element) {
    if (hasOriginalAttributes(element)) {
      return;
    }

if (!parent || parent.tagName !== "PICTURE") {
      return;
    }

var setMultiBackground = function setMultiBackground(element, settings, instance) {
    var bg1xValue = getData(element, settings.data_bg_multi);
    var bgHiDpiValue = getData(element, settings.data_bg_multi_hidpi);
    var bgDataValue = isHiDpi && bgHiDpiValue ? bgHiDpiValue : bg1xValue;

if (!bgDataValue) {
      return;
    }

element.style.backgroundImage = bgDataValue;
    manageApplied(element, settings, instance);
  };
  var setSources = function setSources(element, settings) {
    var setSourcesFunction = setSourcesFunctions[element.tagName];

if (!setSourcesFunction) {
      return;
    }

setSourcesFunction(element, settings);
  };
  var manageApplied = function manageApplied(element, settings, instance) {
    addClass(element, settings.class_applied);
    setStatus(element, statusApplied);
    removeDataMultiBackground(element, settings);

if (settings.unobserve_completed) {
      // Unobserve now because we can't do it on load
      unobserve(element, settings);
    }

safeCallback(settings.callback_applied, element, instance);
  };
  var manageLoading = function manageLoading(element, settings, instance) {
    updateLoadingCount(instance, +1);
    addClass(element, settings.class_loading);
    setStatus(element, statusLoading);
    safeCallback(settings.callback_loading, element, instance);
  }; // REMOVE DATA ATTRIBUTES --------------

if (removeDataFunction) {
      removeDataFunction(element, settings);
      return;
    }

removeDataBackground(element, settings);
  };

var eventListeners = element.llEvLisnrs;

for (var eventName in eventListeners) {
      var handler = eventListeners[eventName];
      removeEventListener(element, eventName, handler);
    }

delete element.llEvLisnrs;
  };
  var doneHandler = function doneHandler(element, settings, instance) {
    deleteTempImage(element);
    updateLoadingCount(instance, -1);
    decreaseToLoadCount(instance);
    removeClass(element, settings.class_loading);

if (settings.unobserve_completed) {
      unobserve(element, instance);
    }
  };
  var loadHandler = function loadHandler(event, element, settings, instance) {
    var goingNative = hasStatusNative(element);
    doneHandler(element, settings, instance);
    addClass(element, settings.class_loaded);
    setStatus(element, statusLoaded);
    removeDataAttributes(element, settings);
    safeCallback(settings.callback_loaded, element, instance);
    if (!goingNative) checkFinish(settings, instance);
  };
  var errorHandler = function errorHandler(event, element, settings, instance) {
    var goingNative = hasStatusNative(element);
    doneHandler(element, settings, instance);
    addClass(element, settings.class_error);
    setStatus(element, statusError);
    safeCallback(settings.callback_error, element, instance);
    if (!goingNative) checkFinish(settings, instance);
  };
  var addOneShotEventListeners = function addOneShotEventListeners(element, settings, instance) {
    var elementToListenTo = getTempImage(element) || element;

if (hasEventListeners(elementToListenTo)) {
      // This happens when loading is retried twice
      return;
    }

var _loadHandler = function _loadHandler(event) {
      loadHandler(event, element, settings, instance);
      removeEventListeners(elementToListenTo);
    };

var _errorHandler = function _errorHandler(event) {
      errorHandler(event, element, settings, instance);
      removeEventListeners(elementToListenTo);
    };

addEventListeners(elementToListenTo, _loadHandler, _errorHandler);
  };

var loadBackground = function loadBackground(element, settings, instance) {
    addTempImage(element);
    addOneShotEventListeners(element, settings, instance);
    setBackground(element, settings, instance);
    setMultiBackground(element, settings, instance);
  };

var loadRegular = function loadRegular(element, settings, instance) {
    addOneShotEventListeners(element, settings, instance);
    setSources(element, settings);
    manageLoading(element, settings, instance);
  };

var cancelLoadingIfRequired = function cancelLoadingIfRequired(element, entry, settings, instance) {
    if (!settings.cancel_on_exit) return;
    if (!hasStatusLoading(element)) return;
    if (element.tagName !== "IMG") return; //Works only on images

removeEventListeners(element);
    resetSourcesImg(element);
    restoreOriginalAttributesImg(element);
    removeClass(element, settings.class_loading);
    updateLoadingCount(instance, -1);
    resetStatus(element);
    safeCallback(settings.callback_cancel, element, entry, instance);
  };

var onEnter = function onEnter(element, entry, settings, instance) {
    safeCallback(settings.callback_enter, element, entry, instance);
    unobserveIfRequired(element, settings, instance);
    if (hadStartedLoading(element)) return; //Prevent loading it again

load(element, settings, instance);
  };
  var onExit = function onExit(element, entry, settings, instance) {
    if (hasEmptyStatus(element)) return; //Ignore the first pass, at landing

cancelLoadingIfRequired(element, entry, settings, instance);
    safeCallback(settings.callback_exit, element, entry, instance);
  };

var tagsWithNativeLazy = ["IMG", "IFRAME"];
  var shouldUseNative = function shouldUseNative(settings) {
    return settings.use_native && "loading" in HTMLImageElement.prototype;
  };
  var loadAllNative = function loadAllNative(elements, settings, instance) {
    elements.forEach(function (element) {
      if (tagsWithNativeLazy.indexOf(element.tagName) === -1) {
        return;
      }

element.setAttribute("loading", "lazy"); //TODO: Move inside the loadNative method

loadNative(element, settings, instance);
    });
    setToLoadCount(instance, 0);
  };

var isIntersecting = function isIntersecting(entry) {
    return entry.isIntersecting || entry.intersectionRatio > 0;
  };

var getObserverSettings = function getObserverSettings(settings) {
    return {
      root: settings.container === document ? null : settings.container,
      rootMargin: settings.thresholds || settings.threshold + "px"
    };
  };

var intersectionHandler = function intersectionHandler(entries, settings, instance) {
    entries.forEach(function (entry) {
      return isIntersecting(entry) ? onEnter(entry.target, entry, settings, instance) : onExit(entry.target, entry, settings, instance);
    });
  };

instance._observer = new IntersectionObserver(function (entries) {
      intersectionHandler(entries, settings, instance);
    }, getObserverSettings(settings));
  };

window.addEventListener("online", function () {
      retryLazyLoad(settings, instance);
    });
  };

var LazyLoad = function LazyLoad(customSettings, elements) {
    var settings = getExtendedSettings(customSettings);
    this._settings = settings;
    this.loadingCount = 0;
    setObserver(settings, this);
    setOnlineCheck(settings, this);
    this.update(elements);
  };

LazyLoad.prototype = {
    update: function update(givenNodeset) {
      var settings = this._settings;
      var elementsToLoad = getElementsToLoad(givenNodeset, settings);
      setToLoadCount(this, elementsToLoad.length);

if (isBot || !supportsIntersectionObserver) {
        this.loadAll(elementsToLoad);
        return;
      }

if (shouldUseNative(settings)) {
        loadAllNative(elementsToLoad, settings, this);
        return;
      }

updateObserver(this._observer, elementsToLoad);
    },
    destroy: function destroy() {
      // Observer
      if (this._observer) {
        this._observer.disconnect();
      } // Clean custom attributes on elements

queryElements(this._settings).forEach(function (element) {
        delete element.llOriginalAttrs;
      }); // Delete all internal props

delete this._observer;
      delete this._settings;
      delete this.loadingCount;
      delete this.toLoadCount;
    },
    loadAll: function loadAll(elements) {
      var _this = this;

var settings = this._settings;
      var elementsToLoad = getElementsToLoad(elements, settings);
      elementsToLoad.forEach(function (element) {
        load(element, settings, _this);
      });
    }
  };

LazyLoad.load = function (element, customSettings) {
    var settings = getExtendedSettings(customSettings);
    load(element, settings);
  };

LazyLoad.resetStatus = function (element) {
    resetStatus(element);
  }; // Automatic instances creation if required (useful for async script loading)

if (runningOnBrowser) {
    autoInitialize(LazyLoad, window.lazyLoadOptions);
  }

return LazyLoad;

})));

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