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( function () {
'use strict';
const previewType = 'math';
const selector = '.mwe-math-element[href*="qid"], .mwe-math-element[data-qid] img';
const api = new mw.Rest();
const fetch = function ( qid ) {
return api.get( '/math/v0/popup/html/' + qid, {}, {
Accept: 'application/json; charset=utf-8',
'Accept-Language': mw.config.language
} );
};
const getQidStr = function ( parent ) {
if ( parent.getAttribute( 'href' ) ) {
const href = parent.getAttribute( 'href' );
const match = href.match( /qid=(Q\d+)/ );
if ( match ) {
return match[ 1 ];
}
}
return null;
};
const fetchPreviewForTitle = function ( title, el ) {
const deferred = $.Deferred();
const parent = el.closest( '.mwe-math-element' );
let qidstr = getQidStr( parent );
if ( parent.dataset.qid ) {
qidstr = parent.dataset.qid;
}
if ( !qidstr || ( qidstr.match( /Q\d+/g ) === null ) ) {
return deferred.reject();
}
qidstr = qidstr.slice( 1 );
fetch( qidstr ).then( ( body ) => {
const model = {
title: body.title,
url: body.canonicalurl,
languageCode: body.pagelanguagehtmlcode,
languageDirection: body.pagelanguagedir,
extract: body.extract,
type: previewType,
thumbnail: undefined,
pageId: body.pageId
};
deferred.resolve( model );
} );
return deferred.promise();
};
// popups require offsetHeight and offsetWidth attributes
[].forEach.call(
document.querySelectorAll( selector ),
( node ) => {
// temporary hack to enable popup T380079
node.href = node.baseURI;
if ( typeof node.offsetWidth === 'undefined' ) {
node.offsetWidth = node.getBoundingClientRect().width || 1;
}
if ( typeof node.offsetHeight === 'undefined' ) {
node.offsetHeight = node.getBoundingClientRect().height || 1;
}
}
);
const mathDisabledByUser = mw.user.isNamed() && mw.user.options.get( 'math-popups' ) !== '1';
const mathAppliesToThisPage = document.querySelectorAll( selector ).length > 0;
module.exports = !mathAppliesToThisPage || mathDisabledByUser ? null : {
type: previewType,
selector,
gateway: {
fetch,
fetchPreviewForTitle
}
};
}() );