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ext.uls.webfonts.js
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ext.uls.webfonts.js
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/*!
* ULS-Webfonts integration
*
* Copyright (C) 2012 Alolita Sharma, Amir Aharoni, Arun Ganesh, Brandon Harris,
* Niklas Laxström, Pau Giner, Santhosh Thottingal, Siebrand Mazeland and other
* contributors. See CREDITS for a list.
*
* UniversalLanguageSelector is dual licensed GPLv2 or later and MIT. You don't
* have to do anything special to choose one license or the other and you don't
* have to notify anyone which license you are using. You are free to use
* UniversalLanguageSelector in commercial projects as long as the copyright
* header is left intact. See files GPL-LICENSE and MIT-LICENSE for details.
*
* @file
* @ingroup Extensions
* @licence GNU General Public Licence 2.0 or later
* @licence MIT License
*/
( function () {
'use strict';
var getULSPreferences = require( 'ext.uls.preferences' ),
ulsPreferences = getULSPreferences();
mw.webfonts = mw.webfonts || {};
mw.webfonts.preferences = {
registry: {
fonts: {},
webfontsEnabled: mw.config.get( 'wgULSWebfontsEnabled' )
},
isEnabled: function () {
return this.registry.webfontsEnabled;
},
enable: function () {
this.registry.webfontsEnabled = true;
},
disable: function () {
this.registry.webfontsEnabled = false;
},
setFont: function ( language, font ) {
this.registry.fonts[ language ] = font;
},
getFont: function ( language ) {
return this.registry.fonts[ language ];
},
save: function ( callback ) {
// get updated copy of preferences
ulsPreferences = getULSPreferences();
ulsPreferences.set( 'webfonts', this.registry );
ulsPreferences.save( callback );
},
load: function () {
mw.webfonts.preferences.registry = Object.assign( this.registry,
ulsPreferences.get( 'webfonts' ) );
}
};
mw.webfonts.setup = function () {
// Initialize webfonts
var mediawikiFontRepository = $.webfonts.repository;
mediawikiFontRepository.base = mw.config.get( 'wgULSFontRepositoryBasePath' );
// MediaWiki specific overrides for jquery.webfonts
Object.assign( $.fn.webfonts.defaults, {
repository: mediawikiFontRepository,
fontStack: $( document.body ).css( 'font-family' ).split( /, /g ),
/**
* Returns a suitable font from font repository based
* on the given language and html classes and user preference.
*
* @param {Object} repository
* @param {string} language
* @param {string[]} classes
* @return {string|null}
*/
fontSelector: function ( repository, language, classes ) {
var font, defaultFont;
if ( !language ) {
return null;
}
defaultFont = repository.defaultFont( language );
if ( classes && classes.indexOf( 'autonym' ) >= 0 ) {
// Do not load font for showing autonym.
return null;
}
// If the user has a font preference, apply it always.
font = mw.webfonts.preferences.getFont( language ) || defaultFont;
if ( !font || font === 'system' ) {
// Avoid setting 'system' as a font in css
return null;
}
return font;
},
exclude: ( function () {
var excludes = mw.config.get( 'wgULSNoWebfontsSelectors' ).join( ', ' );
if ( mw.user.options.get( 'editfont' ) !== 'default' ) {
// Exclude textboxes from webfonts if the user has edit area font option
// set using 'Preferences' page
excludes = excludes ? excludes + ',textarea' : 'textarea';
}
return excludes;
}() ),
overridableFontFamilies: ( function () {
var headingFont = $( 'h1' ).css( 'font-family' );
return headingFont ? [ headingFont ] : [];
}() )
} );
// Execute after task queue is processed so that the rendering is complete.
// This is important because webfonts behavior depends on the font-family
// property values set by stylesheets.
setTimeout( function () {
$( document.body ).webfonts();
}, 0 );
};
$( function () {
mw.webfonts.preferences.load();
if ( mw.webfonts.preferences.isEnabled() ) {
// Queue to next idle period to optimize loading.
mw.requestIdleCallback( function () {
mw.loader.using( 'ext.uls.webfonts.repository' ).then( mw.webfonts.setup );
} );
}
} );
}() );

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