Extension:ThemeToggle

The ThemeToggle extension that allows for themes with minimal flash of wrongly styled content. This is achieved by delivering the script responsible for theme loading earlier and separately from other scripts (bypassing the requirement on MediaWiki's ResourceLoader client and having to wait for other modules such as TabberNeue, skin scripts, and so on).

Enabling
Wikis on wiki.gg have this extension enabled by default. You can prepare the theme CSS and definitions before the deployment is done.

Variables

 * $wgThemeToggleSwitcherStyle
 * Controls which theme switcher module is used. If, uses   when there's two or less themes, and   otherwise.
 * Accepted values:,  ,  ,.
 * Default:


 * $wgThemeToggleEnableForAnonymousUsers
 * Controls whether the extension will be enabled for anonymous visitors.
 * Changing this requires the HTML cache (Cloudflare level) to be purged for your wiki, as the
 * Default:


 * $wgThemeTogglePreferenceGroup
 * Overrides the suffix used for server-side user's theme preference ID. The suffix exists because wiki.gg shares user preferences between all the wikis in the whole network, and so it is used to avoid poisoning the preference values for other wikis, and causing issues.
 * If, the wiki ID is used - on wiki.gg it consists of the wiki and the language, for example.
 * Changing this setting to a single, unique value allows for sharing the preference between your English wiki and its translations. It's recommended that you simply chop off the language code from the wiki ID: for ARK: Survival Evolved Wiki this would be . However, all of those wikis should have their theme definitions and styles kept in sync (while there is currently no definition sharing implemented, the   variable can be used to share the CSS).
 * Warning: Previous theme preferences are not migrated when the value is changed, and registered users will lose their theme choices. Old entries are also not removed from the database.
 * Default:


 * $wgThemeToggleLoadScriptOverride
 * Overrides the ResourceLoader endpoint that will be used to load theme styles from. This may be used to share theme styles between multiple wikis by choosing a single one as the "authority" - which will act as the sole style provider.
 * If, defaults to the wiki's own   path.
 * Default:
 * Example: to have the theme CSS loaded from your English wiki, set to  on all translations.

Defining themes
Themes can be defined at MediaWiki:Theme-definitions, with format resembling the Gadgets extension.

Each line is a new theme definition, and must begin with an asterisk, followed by an internal theme ID (which must be a single alphanumerical word / not contain any characters other than letters or numbers), and optionally options inside square brackets. For example: * light[bundled] * dark

or

* blue[bundled|default] * red[bundled] * purple

The square brackets can be omitted if empty.

Names to be displayed in the theme switcher, or Special:Preferences, can be set by creating a system message titled MediaWiki:Theme- ID .

Definitions are bundled with the JavaScript sent to the browser. You may need to refresh your browser's cache before changes to the definitions list (or theme CSS) become visible.

Theme CSS
Themes without the  flag have their CSS loaded from a system message titled MediaWiki:Theme- ID .css (for example MediaWiki:Theme-dark.css).

Monitoring theme usage
Special:ThemeUsage shows the number of registered users with each theme set as their preferred.

Users with preferences that are no longer valid (because the theme was removed from the definitions list) are shown in a separate row.

Translating
Please submit translations via the project's Weblate panel (log in with Discord).