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/**
* @class mw.Api.plugin.category
*/
( function ( mw, $ ) {
$.extend( mw.Api.prototype, {
/**
* Determine if a category exists.
*
* @param {mw.Title|string} title
* @return {jQuery.Promise}
* @return {Function} return.done
* @return {boolean} return.done.isCategory Whether the category exists.
*/
isCategory: function ( title ) {
var apiPromise = this.get( {
prop: 'categoryinfo',
titles: String( title )
} );
return apiPromise
.then( function ( data ) {
var exists = false;
if ( data.query && data.query.pages ) {
$.each( data.query.pages, function ( id, page ) {
if ( page.categoryinfo ) {
exists = true;
}
} );
}
return exists;
} )
.promise( { abort: apiPromise.abort } );
},
/**
* Get a list of categories that match a certain prefix.
*
* E.g. given "Foo", return "Food", "Foolish people", "Foosball tables"...
*
* @param {string} prefix Prefix to match.
* @return {jQuery.Promise}
* @return {Function} return.done
* @return {string[]} return.done.categories Matched categories
*/
getCategoriesByPrefix: function ( prefix ) {
// Fetch with allpages to only get categories that have a corresponding description page.
var apiPromise = this.get( {
list: 'allpages',
apprefix: prefix,
apnamespace: mw.config.get( 'wgNamespaceIds' ).category
} );
return apiPromise
.then( function ( data ) {
var texts = [];
if ( data.query && data.query.allpages ) {
$.each( data.query.allpages, function ( i, category ) {
texts.push( new mw.Title( category.title ).getMainText() );
} );
}
return texts;
} )
.promise( { abort: apiPromise.abort } );
},
/**
* Get the categories that a particular page on the wiki belongs to.
*
* @param {mw.Title|string} title
* @return {jQuery.Promise}
* @return {Function} return.done
* @return {boolean|mw.Title[]} return.done.categories List of category titles or false
* if title was not found.
*/
getCategories: function ( title ) {
var apiPromise = this.get( {
prop: 'categories',
titles: String( title )
} );
return apiPromise
.then( function ( data ) {
var titles = false;
if ( data.query && data.query.pages ) {
$.each( data.query.pages, function ( id, page ) {
if ( page.categories ) {
if ( titles === false ) {
titles = [];
}
$.each( page.categories, function ( i, cat ) {
titles.push( new mw.Title( cat.title ) );
} );
}
} );
}
return titles;
} )
.promise( { abort: apiPromise.abort } );
}
} );
/**
* @class mw.Api
* @mixins mw.Api.plugin.category
*/
}( mediaWiki, jQuery ) );