This functionality was partially provided by Narayam and WebFonts extensions on some wikis. The ULS replaces those extensions and will be available in all Wikimedia projects for all users (logged-in and anonymous). More project specific details later.
Universal Language Selector
The Universal Language Selector extension (ULS) provides a flexible way to configure and deliver language settings like interface language, fonts, and input methods (keyboard mappings). This allows users to type text in different languages not directly supported by their keyboard, read content in a script for which fonts are not available locally, or customize the language in which menus are displayed.
The functionality provided is listed below:
- Language settings panel. Main entry point to configure language tools. It can be accessed from the interlanguage list on the sidebar, or at the personal toolbar for wikis lacking interlanguage links.
- User interface (UI) language adjustments. Users can change the language in which the UI is provided regardless of the content language. At the moment, UI customization is provided only for logged-in users.
- Font selection. Web fonts are provided for non-latin scripts so that users can display content in those languages without installing local fonts. Users can select alternative fonts or decide to use their local fonts if they are available.
- Input method configuration. Users lacking a keyboard for a particular script can still write in that script by using input mappings. Hindi users with a QWERTY keyboard can write “प” by typing “pa” when Hindi input method is enabled.
- Input method contextual menu. Options for switching between languages and keyboard mappings are provided next to each active input element. Users can easily combine English, International Phonetic Alphabet and Russian when writing about Moscow on English Wikipedia: “Moscow (/ˈmɒskaʊ/ or /ˈmɒskoʊ/; Russian: Москва, tr. Moskva; IPA: [mɐˈskva]) is the capital city and the most populous federal subject of Russia.”
How to access ULS
- Wiki projects with multiple language versions will integrate language settings in the existing language related area used for interlanguage links. This includes all language versions of:
- Wiki projects without interlanguage links will integrate language settings in the personal toolbar next to their username. This includes the following wikis:
- Wikimedia Commons
- Wikimedia Incubator
- and others
Limitations in functionality
The selection of user interface language will be only available for logged-in users (why?).
For English Wikipedia, the input method contextual menu will be disabled by default. Regardless of the initial state of input methods, users can always enable or disable them for any wiki.
You can enable web fonts by opening the ULS interface. Click on the gear icon, then select "Display", then select "Fonts", then enable "Download fonts when needed". See Universal Language Selector/WebFonts for more information.
Most development is part of the general libraries for the Milkshake project (see for GitHub repository information and so on).
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