2021-06-21 17:49:47 +00:00
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/**
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2021-06-21 21:14:33 +00:00
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* Initialize Tabber
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*
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* @param {HTMLElement} tabber
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2021-10-23 04:47:49 +00:00
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* @param {number} count
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2021-06-21 17:49:47 +00:00
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*/
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2021-10-23 04:47:49 +00:00
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function initTabber( tabber, count ) {
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2022-04-18 23:10:58 +00:00
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var tabPanels = tabber.querySelectorAll( ':scope > .tabber__section > .tabber__panel' );
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2021-06-21 21:14:33 +00:00
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2022-04-19 01:45:33 +00:00
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var config = require( './config.json' ),
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container = document.createElement( 'header' ),
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2021-06-21 23:32:15 +00:00
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tabList = document.createElement( 'nav' ),
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2021-06-21 21:14:33 +00:00
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prevButton = document.createElement( 'div' ),
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nextButton = document.createElement( 'div' );
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2022-04-23 00:00:32 +00:00
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var buildTabs = function () {
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2022-04-18 23:10:58 +00:00
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var fragment = new DocumentFragment();
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2021-06-21 21:14:33 +00:00
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2022-04-23 00:00:32 +00:00
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Array.prototype.forEach.call( tabPanels, function ( tabPanel ) {
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2022-04-18 23:10:58 +00:00
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var hash = mw.util.escapeIdForAttribute( tabPanel.title ) + '-' + count,
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2021-06-21 21:14:33 +00:00
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tab = document.createElement( 'a' );
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tabPanel.setAttribute( 'id', hash );
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tabPanel.setAttribute( 'role', 'tabpanel' );
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tabPanel.setAttribute( 'aria-labelledby', 'tab-' + hash );
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2021-06-21 23:38:59 +00:00
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tabPanel.setAttribute( 'aria-hidden', true );
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2021-06-21 21:14:33 +00:00
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tab.innerText = tabPanel.title;
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2021-06-21 23:46:17 +00:00
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tab.classList.add( 'tabber__tab' );
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2021-06-21 21:14:33 +00:00
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tab.setAttribute( 'title', tabPanel.title );
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tab.setAttribute( 'role', 'tab' );
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tab.setAttribute( 'href', '#' + hash );
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tab.setAttribute( 'id', 'tab-' + hash );
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2021-06-21 23:38:59 +00:00
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tab.setAttribute( 'aria-select', false );
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2021-06-21 21:14:33 +00:00
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tab.setAttribute( 'aria-controls', hash );
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2021-06-21 23:28:47 +00:00
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fragment.append( tab );
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2021-06-21 21:14:33 +00:00
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} );
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2021-06-21 23:32:15 +00:00
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tabList.append( fragment );
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2021-06-21 23:28:47 +00:00
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container.classList.add( 'tabber__header' );
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2021-06-21 23:46:17 +00:00
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tabList.classList.add( 'tabber__tabs' );
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2021-06-21 23:32:15 +00:00
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tabList.setAttribute( 'role', 'tablist' );
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2021-06-21 23:28:47 +00:00
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prevButton.classList.add( 'tabber__header__prev' );
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nextButton.classList.add( 'tabber__header__next' );
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2021-06-21 23:32:15 +00:00
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container.append( prevButton, tabList, nextButton );
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2021-06-21 21:14:33 +00:00
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};
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2021-06-21 17:49:47 +00:00
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2022-04-23 00:00:32 +00:00
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var updateSectionHeight = function ( section, activePanel ) {
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2022-04-18 23:59:38 +00:00
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var height = activePanel.offsetHeight;
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if ( height === 0 ) {
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// Sometimes the tab is hidden by one of its parent elements
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// and you can only get the actual height by cloning the element
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var clone = activePanel.cloneNode( true );
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// Hide the cloned element
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clone.style.cssText = 'position:absolute;visibility:hidden;';
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// Add cloned element to body
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document.body.appendChild( clone );
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// Measure the height of the clone
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height = clone.clientHeight;
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// Remove the cloned element
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clone.parentNode.removeChild( clone );
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}
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section.style.height = String( height ) + 'px';
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// Scroll to tab
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section.scrollLeft = activePanel.offsetLeft;
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};
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2022-04-23 00:00:32 +00:00
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var onElementResize = function ( entries ) {
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2022-04-18 23:59:38 +00:00
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if ( entries && entries.length > 0 ) {
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2022-04-23 00:00:32 +00:00
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var targetPanel = entries[ 0 ].target;
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var section = targetPanel.parentNode;
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2022-04-18 23:59:38 +00:00
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updateSectionHeight( section, targetPanel );
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}
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};
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var resizeObserver = null;
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if ( window.ResizeObserver ) {
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resizeObserver = new ResizeObserver( mw.util.debounce( 250, onElementResize ) );
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}
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2021-06-21 21:14:33 +00:00
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buildTabs();
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tabber.prepend( container );
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// Initalize previous and next buttons
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2022-04-23 00:00:32 +00:00
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var initButtons = function () {
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2022-04-18 23:10:58 +00:00
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var PREVCLASS = 'tabber__header--prev-visible',
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2021-06-21 21:14:33 +00:00
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NEXTCLASS = 'tabber__header--next-visible';
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/* eslint-disable mediawiki/class-doc */
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2022-04-23 00:00:32 +00:00
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var scrollTabs = function ( offset ) {
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2022-04-18 23:10:58 +00:00
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var scrollLeft = tabList.scrollLeft + offset;
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2021-06-21 21:14:33 +00:00
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// Scroll to the start
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if ( scrollLeft <= 0 ) {
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2021-06-21 23:32:15 +00:00
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tabList.scrollLeft = 0;
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2022-01-31 06:35:36 +00:00
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} else {
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tabList.scrollLeft = scrollLeft;
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}
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};
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2022-04-23 00:00:32 +00:00
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var updateButtons = function () {
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2022-04-18 23:10:58 +00:00
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var scrollLeft = tabList.scrollLeft;
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2022-01-31 06:35:36 +00:00
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// Scroll to the start
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if ( scrollLeft <= 0 ) {
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2021-06-21 21:14:33 +00:00
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container.classList.remove( PREVCLASS );
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container.classList.add( NEXTCLASS );
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} else {
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// Scroll to the end
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2021-06-21 23:32:15 +00:00
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if ( scrollLeft + tabList.offsetWidth >= tabList.scrollWidth ) {
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2021-06-21 21:14:33 +00:00
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container.classList.remove( NEXTCLASS );
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container.classList.add( PREVCLASS );
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2021-06-21 17:49:47 +00:00
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} else {
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2021-06-21 21:14:33 +00:00
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container.classList.add( NEXTCLASS );
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container.classList.add( PREVCLASS );
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2021-06-21 20:56:00 +00:00
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}
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}
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2021-06-21 21:14:33 +00:00
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};
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2022-04-23 00:00:32 +00:00
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var setupButtons = function () {
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2022-04-18 23:10:58 +00:00
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var isScrollable = ( tabList.scrollWidth > container.offsetWidth );
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2021-06-21 21:14:33 +00:00
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if ( isScrollable ) {
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2022-04-18 23:10:58 +00:00
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var scrollOffset = container.offsetWidth / 2;
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2021-06-21 21:14:33 +00:00
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// Just to add the right classes
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2022-01-31 06:35:36 +00:00
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updateButtons();
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2021-06-21 21:14:33 +00:00
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2022-04-19 20:34:04 +00:00
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// Button only shows on pointer devices
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if ( matchMedia( '(hover: hover)' ).matches ) {
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2022-04-23 00:00:32 +00:00
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prevButton.addEventListener( 'click', function () {
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2022-04-19 20:34:04 +00:00
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scrollTabs( -scrollOffset );
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}, false );
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2022-04-23 00:00:32 +00:00
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nextButton.addEventListener( 'click', function () {
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2022-04-19 20:34:04 +00:00
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scrollTabs( scrollOffset );
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}, false );
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}
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2021-06-21 21:14:33 +00:00
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} else {
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container.classList.remove( NEXTCLASS );
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container.classList.remove( PREVCLASS );
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}
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};
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/* eslint-enable mediawiki/class-doc */
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2021-06-21 20:56:00 +00:00
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2021-06-21 21:14:33 +00:00
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setupButtons();
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2021-06-21 20:56:00 +00:00
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2022-01-31 06:35:36 +00:00
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// Listen for scroll event on header
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// Also triggered by side-scrolling using other means other than the buttons
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2022-04-23 00:00:32 +00:00
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tabList.addEventListener( 'scroll', function () {
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2022-01-31 06:35:36 +00:00
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updateButtons();
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} );
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2022-04-19 01:45:33 +00:00
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// Listen for element resize
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if ( window.ResizeObserver ) {
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var tabListResizeObserver = new ResizeObserver( mw.util.debounce( 250, setupButtons ) );
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tabListResizeObserver.observe( tabList );
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}
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2021-06-21 21:14:33 +00:00
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};
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2021-06-21 20:56:00 +00:00
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2022-04-19 01:45:33 +00:00
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// NOTE: Are there better ways to scope them?
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var xhr = new XMLHttpRequest();
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var currentRequest = null, nextRequest = null;
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/**
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* Loads page contents into tab
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*
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2022-04-23 00:00:32 +00:00
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* @param {HTMLElement} targetPanel
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* @param {string} url
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2022-04-19 01:45:33 +00:00
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*/
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function loadPage( targetPanel, url ) {
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var requestData = {
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url: url,
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targetPanel: targetPanel
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};
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if ( currentRequest ) {
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2022-04-23 00:00:32 +00:00
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if ( currentRequest.url !== requestData.url ) {
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2022-04-19 01:45:33 +00:00
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nextRequest = requestData;
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}
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// busy
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return;
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}
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xhr.open( 'GET', url );
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currentRequest = requestData;
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xhr.send( null );
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}
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2021-06-21 21:14:33 +00:00
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/**
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* Show panel based on target hash
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*
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* @param {string} targetHash
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2022-04-23 00:00:32 +00:00
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* @param {boolean} allowRemoteLoad
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2021-06-21 21:14:33 +00:00
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*/
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2022-04-19 01:45:33 +00:00
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function showPanel( targetHash, allowRemoteLoad ) {
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2022-04-18 23:10:58 +00:00
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var ACTIVETABCLASS = 'tabber__tab--active',
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2021-06-21 21:14:33 +00:00
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ACTIVEPANELCLASS = 'tabber__panel--active',
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targetPanel = document.getElementById( targetHash ),
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targetTab = document.getElementById( 'tab-' + targetHash ),
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2022-04-23 00:00:32 +00:00
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section = targetPanel.parentNode,
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2022-04-19 01:45:33 +00:00
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activePanel = section.querySelector( ':scope > .' + ACTIVEPANELCLASS ),
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parentPanel, parentSection;
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2022-04-23 00:00:32 +00:00
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var loadTransclusion = function () {
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2022-04-19 02:46:40 +00:00
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var loading = document.createElement( 'div' ),
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indicator = document.createElement( 'div' );
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2022-04-19 03:09:13 +00:00
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targetPanel.setAttribute( 'aria-live', 'polite' );
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targetPanel.setAttribute( 'aria-busy', 'true' );
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2022-04-19 02:46:40 +00:00
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loading.setAttribute( 'class', 'tabber__transclusion--loading' );
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indicator.setAttribute( 'class', 'tabber__loading-indicator' );
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loading.appendChild( indicator );
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2022-04-19 01:45:33 +00:00
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targetPanel.textContent = '';
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targetPanel.appendChild( loading );
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loadPage( targetPanel, targetPanel.dataset.tabberLoadUrl );
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2022-04-23 00:00:32 +00:00
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};
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2021-06-21 21:14:33 +00:00
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/* eslint-disable mediawiki/class-doc */
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if ( activePanel ) {
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2021-06-23 14:45:14 +00:00
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// Just to be safe since there can be multiple active classes
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// even if there shouldn't be
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2022-04-18 23:10:58 +00:00
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var activeTabs = tabList.querySelectorAll( '.' + ACTIVETABCLASS );
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2021-06-23 14:45:14 +00:00
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if ( activeTabs.length > 0 ) {
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2022-04-23 00:00:32 +00:00
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Array.prototype.forEach.call( activeTabs, function ( activeTab ) {
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2021-06-23 14:45:14 +00:00
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activeTab.classList.remove( ACTIVETABCLASS );
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activeTab.setAttribute( 'aria-selected', false );
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} );
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2021-06-21 17:49:47 +00:00
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}
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2022-04-18 23:59:38 +00:00
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if ( resizeObserver ) {
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resizeObserver.unobserve( activePanel );
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}
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2021-06-21 21:14:33 +00:00
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activePanel.classList.remove( ACTIVEPANELCLASS );
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2021-06-21 23:38:59 +00:00
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activePanel.setAttribute( 'aria-hidden', true );
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2021-06-21 21:14:33 +00:00
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}
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2021-06-21 23:46:17 +00:00
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// Add active class to the tab
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2021-06-21 21:14:33 +00:00
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targetTab.classList.add( ACTIVETABCLASS );
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2021-06-21 23:38:59 +00:00
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targetTab.setAttribute( 'aria-selected', true );
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2021-06-21 21:14:33 +00:00
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targetPanel.classList.add( ACTIVEPANELCLASS );
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2021-06-21 23:38:59 +00:00
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targetPanel.setAttribute( 'aria-hidden', false );
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2021-06-21 21:14:33 +00:00
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2022-04-19 03:09:13 +00:00
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// Lazyload transclusion if needed
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2022-04-23 00:00:32 +00:00
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if ( allowRemoteLoad &&
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targetPanel.dataset.tabberPendingLoad &&
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targetPanel.dataset.tabberLoadUrl
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) {
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2022-04-19 03:09:13 +00:00
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loadTransclusion();
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}
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2022-04-18 23:59:38 +00:00
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updateSectionHeight( section, targetPanel );
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// If we're inside another tab, trigger its logic to recalc its height
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parentSection = section;
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// ResizeObserver should take care of the recursivity already
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2022-04-23 00:00:32 +00:00
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/* eslint-disable-next-line no-unmodified-loop-condition */
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2022-04-18 23:59:38 +00:00
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while ( !resizeObserver ) {
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parentPanel = parentSection.closest( '.' + ACTIVEPANELCLASS );
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if ( !parentPanel ) {
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break;
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}
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2022-04-23 00:00:32 +00:00
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parentSection = parentPanel.parentNode;
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2022-04-18 23:59:38 +00:00
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updateSectionHeight( parentSection, parentPanel );
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}
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if ( resizeObserver ) {
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resizeObserver.observe( targetPanel );
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}
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2021-06-21 21:14:33 +00:00
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/* eslint-enable mediawiki/class-doc */
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}
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2022-04-19 01:45:33 +00:00
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/**
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* Event handler for XMLHttpRequest where ends loading
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*/
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function onLoadEndPage() {
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var targetPanel = currentRequest.targetPanel;
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2022-04-23 00:00:32 +00:00
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if ( xhr.status !== 200 ) {
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2022-04-19 14:24:49 +00:00
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var err = document.createElement( 'div' ),
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errMsg = mw.message( 'error' ).text() + ': HTTP ' + xhr.status;
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err.setAttribute( 'class', 'tabber__transclusion--error error' );
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err.appendChild( document.createTextNode( errMsg ) );
|
2022-04-19 01:45:33 +00:00
|
|
|
targetPanel.textContent = '';
|
|
|
|
targetPanel.appendChild( err );
|
|
|
|
} else {
|
|
|
|
var result = JSON.parse( xhr.responseText );
|
|
|
|
targetPanel.innerHTML = result.parse.text;
|
|
|
|
// wikipage.content hook requires a jQuery object
|
2022-04-23 00:00:32 +00:00
|
|
|
/* eslint-disable-next-line no-undef */
|
2022-04-19 01:45:33 +00:00
|
|
|
mw.hook( 'wikipage.content' ).fire( $( targetPanel ) );
|
|
|
|
delete targetPanel.dataset.tabberPendingLoad;
|
|
|
|
delete targetPanel.dataset.tabberLoadUrl;
|
2022-04-19 03:09:13 +00:00
|
|
|
targetPanel.setAttribute( 'aria-busy', 'false' );
|
2022-04-19 01:45:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
var ACTIVEPANELCLASS = 'tabber__panel--active',
|
|
|
|
targetHash = targetPanel.getAttribute( 'id' ),
|
2022-04-23 00:00:32 +00:00
|
|
|
section = targetPanel.parentNode,
|
2022-04-19 01:45:33 +00:00
|
|
|
activePanel = section.querySelector( ':scope > .' + ACTIVEPANELCLASS );
|
|
|
|
|
|
|
|
if ( nextRequest ) {
|
|
|
|
currentRequest = nextRequest;
|
|
|
|
nextRequest = null;
|
|
|
|
xhr.open( 'GET', currentRequest.url );
|
|
|
|
xhr.send( null );
|
|
|
|
} else {
|
|
|
|
currentRequest = null;
|
|
|
|
}
|
|
|
|
if ( activePanel ) {
|
|
|
|
// Refresh height
|
|
|
|
showPanel( targetHash, false );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
xhr.timeout = 20000;
|
|
|
|
xhr.addEventListener( 'loadend', onLoadEndPage );
|
|
|
|
|
2021-06-21 21:14:33 +00:00
|
|
|
/**
|
|
|
|
* Retrieve target hash and trigger show panel
|
|
|
|
* If no targetHash is invalid, use the first panel
|
|
|
|
*
|
|
|
|
* @param {HTMLElement} tabber
|
|
|
|
*/
|
|
|
|
function switchTab() {
|
2022-04-18 23:10:58 +00:00
|
|
|
var targetHash = new mw.Uri( location.href ).fragment;
|
2021-06-21 21:14:33 +00:00
|
|
|
|
|
|
|
// Switch to the first tab if no targetHash or no tab is detected
|
2022-04-18 23:50:20 +00:00
|
|
|
// TODO: Remove the polyfill with CSS.escape when we are dropping IE support
|
|
|
|
if ( !targetHash || !tabList.querySelector( '#tab-' + targetHash.replace( /[^a-zA-Z0-9-_]/g, '\\$&' ) ) ) {
|
2021-06-21 23:32:15 +00:00
|
|
|
targetHash = tabList.firstElementChild.getAttribute( 'id' ).substring( 4 );
|
2021-06-21 21:14:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
showPanel( targetHash );
|
|
|
|
}
|
|
|
|
|
|
|
|
switchTab();
|
|
|
|
|
2022-04-19 20:34:04 +00:00
|
|
|
initButtons();
|
2021-06-21 21:14:33 +00:00
|
|
|
|
|
|
|
// window.addEventListener( 'hashchange', switchTab, false );
|
|
|
|
|
|
|
|
// Respond to clicks on the nav tabs
|
2022-04-23 00:00:32 +00:00
|
|
|
Array.prototype.forEach.call( tabList.children, function ( tab ) {
|
|
|
|
tab.addEventListener( 'click', function ( event ) {
|
2022-04-18 23:10:58 +00:00
|
|
|
var targetHash = tab.getAttribute( 'href' ).substring( 1 );
|
2021-06-21 21:14:33 +00:00
|
|
|
event.preventDefault();
|
2022-04-19 01:45:33 +00:00
|
|
|
if ( !config || config.updateLocationOnTabChange ) {
|
|
|
|
// Add hash to the end of the URL
|
|
|
|
history.replaceState( null, null, '#' + targetHash );
|
|
|
|
}
|
|
|
|
showPanel( targetHash, true );
|
2021-06-21 21:14:33 +00:00
|
|
|
} );
|
|
|
|
} );
|
2021-06-21 17:49:47 +00:00
|
|
|
|
2021-06-21 21:14:33 +00:00
|
|
|
tabber.classList.add( 'tabber--live' );
|
|
|
|
}
|
2021-06-21 17:49:47 +00:00
|
|
|
|
2021-06-21 21:14:33 +00:00
|
|
|
function main() {
|
2022-04-21 20:35:23 +00:00
|
|
|
var tabbers = document.querySelectorAll( '.tabber:not( .tabber--live )' );
|
2021-06-21 17:49:47 +00:00
|
|
|
|
2021-06-21 21:14:33 +00:00
|
|
|
if ( tabbers ) {
|
2022-04-18 23:10:58 +00:00
|
|
|
var count = 0;
|
2021-06-21 21:14:33 +00:00
|
|
|
mw.loader.load( 'ext.tabberNeue.icons' );
|
2022-04-23 00:00:32 +00:00
|
|
|
Array.prototype.forEach.call( tabbers, function ( tabber ) {
|
2021-10-23 04:47:49 +00:00
|
|
|
initTabber( tabber, count );
|
|
|
|
count++;
|
2021-06-21 17:49:47 +00:00
|
|
|
} );
|
2021-06-21 21:14:33 +00:00
|
|
|
}
|
|
|
|
}
|
2021-06-21 17:49:47 +00:00
|
|
|
|
2021-06-21 21:14:33 +00:00
|
|
|
main();
|