StarCitizenTools/mediawiki-extensions-TabberNeue
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feat: add keyboard navigation to tabs

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alistair3149 2024-05-25 16:20:59 -04:00
parent 78a987d7c1
commit bbde0ae7bd
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1 changed files with 76 additions and 24 deletions
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100
modules/ext.tabberNeue/ext.tabberNeue.js
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@ -415,28 +415,61 @@ class TabberEvent {
const tabpanels = tabberEl.querySelectorAll( ':scope > .tabber__section > .tabber__panel' );
const tabs = tabberEl.querySelectorAll( ':scope > .tabber__header > .tabber__tabs > .tabber__tab' );
const tabpanelAttributes = [];
const tabAttributes = [];
tabpanels.forEach( ( tabpanel ) => {
tabpanel.setAttribute( 'aria-hidden', 'true' );
if ( typeof resizeObserver !== 'undefined' && resizeObserver ) {
resizeObserver.unobserve( tabpanel );
if ( tabpanel === activeTabpanel ) {
tabpanelAttributes.push( {
element: tabpanel,
attributes: {
'aria-hidden': 'false'
}
} );
if ( typeof resizeObserver !== 'undefined' && resizeObserver ) {
resizeObserver.observe( activeTabpanel );
}
} else {
tabpanelAttributes.push( {
element: tabpanel,
attributes: {
'aria-hidden': 'true'
}
} );
if ( typeof resizeObserver !== 'undefined' && resizeObserver ) {
resizeObserver.unobserve( tabpanel );
}
}
} );
tabs.forEach( ( tab ) => {
const tabAttributes = {
'aria-selected': false,
tabindex: '-1'
};
Util.setAttributes( tab, tabAttributes );
if ( tab === activeTab ) {
tabAttributes.push( {
element: tab,
attributes: {
'aria-selected': true,
tabindex: '0'
}
} );
} else {
tabAttributes.push( {
element: tab,
attributes: {
'aria-selected': false,
tabindex: '-1'
}
} );
}
} );
// Ensure `resizeObserver` is defined before using it
if ( typeof resizeObserver !== 'undefined' && resizeObserver ) {
resizeObserver.observe( activeTabpanel );
}
activeTabpanel.setAttribute( 'aria-hidden', 'false' );
activeTab.setAttribute( 'aria-selected', 'true' );
activeTab.setAttribute( 'tabindex', '0' );
window.requestAnimationFrame( () => {
tabpanelAttributes.forEach( ( { element, attributes } ) => {
Util.setAttributes( element, attributes );
} );
tabAttributes.forEach( ( { element, attributes } ) => {
Util.setAttributes( element, attributes );
} );
} );
TabberEvent.updateIndicator( tabberEl, activeTab );
TabberEvent.setActiveTabpanel( activeTabpanel );
@ -691,16 +724,8 @@ class TabberBuilder {
this.header.append( prevButton, this.tablist, nextButton );
}
/**
* Attach events to the tabber element.
* This method checks if the window has ResizeObserver support and
* creates an observer to update the header overflow.
* If ResizeObserver is supported,it creates an observer to
* call TabberEvent.updateHeaderOverflow method with a debounce of 250ms.
* The observer is then set to observe the tablist element of the tabber.
*/
attachEvents() {
this.tablist.addEventListener( 'scroll', () => {
this.tablist.addEventListener( 'scroll', { passive: true }, () => {
const activeTab = this.tablist.querySelector( '[aria-selected="true"]' );
TabberEvent.toggleAnimation( false );
window.requestAnimationFrame( () => {
@ -712,6 +737,33 @@ class TabberBuilder {
TabberEvent.toggleAnimation( true );
}, 250 );
} );
let tabFocus = 0;
const tabs = this.tablist.querySelectorAll( ':scope > .tabber__tab' );
this.tablist.addEventListener( 'keydown', ( e ) => {
// Move right
if ( e.key === 'ArrowRight' || e.key === 'ArrowLeft' ) {
tabs[ tabFocus ].setAttribute( 'tabindex', '-1' );
if ( e.key === 'ArrowRight' ) {
tabFocus++;
// If we're at the end, go to the start
if ( tabFocus >= tabs.length ) {
tabFocus = 0;
}
// Move left
} else if ( e.key === 'ArrowLeft' ) {
tabFocus--;
// If we're at the start, move to the end
if ( tabFocus < 0 ) {
tabFocus = tabs.length - 1;
}
}
tabs[ tabFocus ].setAttribute( 'tabindex', '0' );
tabs[ tabFocus ].focus();
}
} );
if ( window.ResizeObserver ) {
const headerOverflowObserver = new ResizeObserver( mw.util.debounce( 250, () => {
TabberEvent.updateHeaderOverflow( this.tabber );