Proyectos de Subversion Moodle

/**
 * Lazy loaded list of items.
 *
 * @module     core_message/message_drawer_lazy_load_list
 * @copyright  2018 Ryan Wyllie <ryan@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
define("core_message/message_drawer_lazy_load_list",["jquery","core/custom_interaction_events","core/pending"],(function($,CustomEvents,PendingPromise){var SELECTORS_ROOT='[data-region="lazy-load-list"]',SELECTORS_LOADING_ICON_CONTAINER='[data-region="loading-icon-container"]',SELECTORS_CONTENT_CONTAINER='[data-region="content-container"]',SELECTORS_EMPTY_MESSAGE='[data-region="empty-message-container"]',SELECTORS_PLACEHOLDER='[data-region="placeholder-container"]',stopLoading=function(root){root.attr("data-loading",!1)},getContentContainer=function(root){return root.find(SELECTORS_CONTENT_CONTAINER)},hideLoadingIcon=function(root){root.find(SELECTORS_LOADING_ICON_CONTAINER).addClass("hidden")},showEmptyMessage=function(root){root.find(SELECTORS_EMPTY_MESSAGE).removeClass("hidden")},hidePlaceholder=function(root){root.find(SELECTORS_PLACEHOLDER).addClass("hidden")},showContent=function(root){getContentContainer(root).removeClass("hidden")},hideContent=function(root){getContentContainer(root).addClass("hidden")},setLoadedAll=function(root,value){root.attr("data-loaded-all",value)},loadAndRender=function(root,loadCallback,renderCallback){var userId=function(root){return root.attr("data-user-id")}(root);return function(root){root.attr("data-loading",!0)}(root),loadCallback(root,userId).then((function(items){if(items.length>0){var contentContainer=getContentContainer(root);return renderCallback(contentContainer,items,userId).then((function(){return items}))}return items})).then((function(items){return stopLoading(root),root.attr("data-seen",!0),items.length||setLoadedAll(root,!0),items})).catch((function(){stopLoading(root),root.attr("data-seen",!0)}))},initialLoadAndRender=function(root,loadCallback,renderCallback){const pendingPromise=new PendingPromise("initialLoadAndRender");return getContentContainer(root).empty(),function(root){root.find(SELECTORS_PLACEHOLDER).removeClass("hidden")}(root),hideContent(root),loadAndRender(root,loadCallback,renderCallback).then((function(items){hidePlaceholder(root),items.length?showContent(root):showEmptyMessage(root)})).catch((function(){hidePlaceholder(root),showContent(root)})).then((()=>{pendingPromise.resolve()}))},registerEventListeners=function(root,loadCallback,renderCallback){CustomEvents.define(root,[CustomEvents.events.scrollBottom]),root.on(CustomEvents.events.scrollBottom,(function(){(function(root){return!function(root){return"true"==root.attr("data-loaded-all")}(root)&&!function(root){return"true"===root.attr("data-loading")}(root)})(root)&&(!function(root){root.find(SELECTORS_LOADING_ICON_CONTAINER).removeClass("hidden")}(root),loadAndRender(root,loadCallback,renderCallback).then((function(){return hideLoadingIcon(root)})).catch((function(){return hideLoadingIcon(root)})))}))};return{show:function(root,loadCallback,renderCallback){(root=$(root)).attr("data-init")||(registerEventListeners(root,loadCallback,renderCallback),initialLoadAndRender(root,loadCallback,renderCallback),root.attr("data-init",!0))},getContentContainer:getContentContainer,getRoot:function(containerElement){return containerElement.find(SELECTORS_ROOT)},setLoadedAll:setLoadedAll,showEmptyMessage:showEmptyMessage,hideEmptyMessage:function(root){root.find(SELECTORS_EMPTY_MESSAGE).addClass("hidden")},showContent:showContent,hideContent:hideContent}}));

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