USER:THE WUB TOCEXPANDALL.JS

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Documentation for this user script can be added at User:The wub/tocExpandAll. This user script seems to have an accompanying .css page at User:The wub/tocExpandAll.css.

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/* 

Add an expand/collapse all button to the top of the Vector 2022 table of contents

See also https://phabricator.wikimedia.org/T302426



To install add this line:

importScript('User:The wub/tocExpandAllSandbox.js');



to /info/en/?search=Special:MyPage/vector-2022.js

*/



$( document ).ready(function () {



    if ( 

        mw.config.get('skin') === 'vector-2022' &&

        document.querySelector('.vector-toc-level-1 ul li') // any subsections?

    ) {

        // Styles copied from .vector-pinnable-header-toggle-button

        const styles = `

.vector-feature-zebra-design-disabled .vector-toc-header-button {

    display: none;

    border: 0;

    padding: 0;

    background-color: transparent;

    color: #3366cc;

    cursor: pointer;

    text-align: left;

}



.vector-feature-zebra-design-disabled .vector-toc-header-button:hover {

    color: #447ff5;

}



.vector-feature-zebra-design-disabled .vector-toc-header-button::before {

    content: '[';

    color: #54595d;

}



.vector-feature-zebra-design-disabled .vector-toc-header-button::after {

    content: ']';

    color: #54595d;

}



.vector-feature-zebra-design-enabled .vector-toc-header-button {

    display: none;

    border: 0;

    padding: 4px 8px;

    background-color: #eaecf0;

    color: #202122;

    cursor: pointer;

    text-align: left;

    font-size: 0.75rem;

    border-radius: 2px;

}



.vector-feature-zebra-design-enabled .vector-toc-header-button:hover {

    background-color: #f8f9fa;

}

        `;



        mw.loader.addStyleTag( styles );



        const expandButton = document.createElement('button');

        expandButton.innerText = 'expand all';

        expandButton.classList.add('vector-toc-header-button', 'vector-toc-expand-all');

        expandButton.addEventListener( 'click', e => {

            document.querySelectorAll('.vector-toc-contents .vector-toc-level-1').forEach( 

                node => node.classList.add('vector-toc-list-item-expanded')

            );

            document.querySelectorAll('.vector-toc-contents [aria-expanded="false"]').forEach(

                node => node.setAttribute('aria-expanded', 'true')

            );

            expandButton.style.display = 'none';

            collapseButton.style.display = 'inline-block';

            collapseButton.focus({ preventScroll: true });

        });

        

        const collapseButton = document.createElement('button');

        collapseButton.innerText = 'collapse all';

        collapseButton.classList.add('vector-toc-header-button', 'vector-toc-collapse-all');

        collapseButton.addEventListener( 'click', e => {

            document.querySelectorAll('.vector-toc-contents .vector-toc-level-1').forEach(

                node => node.classList.remove('vector-toc-list-item-expanded')

            );

            document.querySelectorAll('.vector-toc-contents [aria-expanded="true"]').forEach(

                node => node.setAttribute('aria-expanded', 'false')

            );

            collapseButton.style.display = 'none';

            expandButton.style.display = 'inline-block';

            expandButton.focus({ preventScroll: true });

        });



        // Any already expanded sections?

        if ( document.querySelector('.vector-toc-list-item-expanded ul li') ) {

            expandButton.style.display = 'none';

            collapseButton.style.display = 'inline-block';

        } else {

            expandButton.style.display = 'inline-block';

            collapseButton.style.display = 'none';

        }



        const tocHeader = document.querySelector('.vector-toc-pinnable-header');

        tocHeader.appendChild( expandButton );

        tocHeader.appendChild( collapseButton );



    }

});

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