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footerLink.js
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footerLink.js
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/**
* @module changeListeners/footerLink
* @private
*/
/**
* Creates the link element and appends it to the footer element.
*
* The following elements are considered to be the footer element (highest
* priority to lowest):
*
* # `#footer-places`
* # `#f-list`
* # The parent element of `#footer li`, which is either an `ol` or `ul`.
*
* @return {HTMLElement} The link element
*/
function createFooterLink() {
const footerListItem = document.createElement( 'li' );
const footerLinkElement = document.createElement( 'a' );
footerLinkElement.href = '#';
footerLinkElement.textContent = mw.message( 'popups-settings-enable' ).text();
footerListItem.appendChild( footerLinkElement );
// As yet, we don't know whether the link should be visible.
footerListItem.style.display = 'none';
// From https://en.wikipedia.org/wiki/MediaWiki:Gadget-ReferenceTooltips.js,
// which was written by Yair rand <https://en.wikipedia.org/wiki/User:Yair_rand>.
let footer = document.querySelector( '#footer-places, #f-list' );
if ( !footer ) {
const footerLegacy = document.querySelector( '#footer li' );
if ( footerLegacy ) {
footer = footerLegacy.parentNode;
}
}
if ( footer ) {
footer.appendChild( footerListItem );
}
return footerListItem;
}
/**
* Creates an instance of the footer link change listener.
*
* The change listener covers the following behaviour:
*
* * The "Edit preview settings" link (the "link") is appended to the footer menu
* (see `createFooterLink` above).
* * When at least one popup type is disabled, then the link is shown;
* otherwise, the link is hidden.
* * When the user clicks the link, then the `showSettings` bound action
* creator is called.
*
* @param {Object} boundActions
* @return {ext.popups.ChangeListener}
*/
export default function footerLink( boundActions ) {
let footerLinkElement;
return ( oldState, newState ) => {
if ( footerLinkElement === undefined ) {
footerLinkElement = createFooterLink();
footerLinkElement.addEventListener( 'click', ( e ) => {
e.preventDefault();
boundActions.showSettings();
} );
}
if ( newState.settings.shouldShowFooterLink ) {
footerLinkElement.style.display = '';
} else {
footerLinkElement.style.display = 'none';
}
};
}

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