Extension:TemplateStylesExtender

MediaWiki extensions manual

TemplateStylesExtender Release status: stable
Implementation	Parser extension
Description	Extends Extension:TemplateStyles with new selectors
Author(s)	Octfxtalk
Latest version	1.2.0 (2023-07-19)
MediaWiki	1.39+
PHP	>=8.0
Composer	octfx/template-styles-extender
License	GNU General Public License 2.0 or later
Download	GitHub: project page git repository URL [help ] commit history Note: No localisation updates are provided by translatewiki.net .
Parameters $wgTemplateStylesExtenderEnablePrefersColorScheme $wgTemplateStylesExtenderEnableCssVars $wgTemplateStylesExtenderEnableUnscopingSupport
Hooks used EditPage::attemptSave ParserFirstCallInit TemplateStylesPropertySanitizer TemplateStylesStylesheetSanitizer

The TemplateStylesExtender extension extends Extension:TemplateStyles with new selectors and matchers.

Features

Add support for:

• CSS variables:

  Example color: var( --color-base )

• image-rendering
• ruby-position
• ruby-align
• scroll-margin-* and scroll-padding-*
• @media (prefers-color-scheme: dark/light) media queries
• mask-image
• clamp
• revert / revert-layer
• aspect-ratio

Installation

• Download and place the file(s) in a directory called TemplateStylesExtender in your extensions/ folder.
• Add the following code at the bottom of your LocalSettings.php file:

  wfLoadExtension( 'TemplateStyles' );
  wfLoadExtension( 'TemplateStylesExtender' );
  

• Configure as required.
•  Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Configuration

Key	Description	Example	Default
$wgTemplateStylesExtenderEnablePrefersColorScheme	Flag to enable @media (prefers-color-scheme: dark/light) media queries	false	true
$wgTemplateStylesExtenderEnableCssVars	Flag to enable CSS vars	false	true
$wgTemplateStylesExtenderEnableUnscopingSupport	Flag to enable unscoping of CSS by users with editinterface permissions	true	false

Note CSS Vars

Currently using :root selectors won't work due to template styles prepending .mw-parser-output.

One possible fix is to wrap the entire content into a 'div' element and adding the declarations to this, e.g.

div#content-wrap {
   --padding: 10px
}

.content {
   padding: var( --padding )
}

Wikitext

<div id="content-wrap">
   <div class="content">
      The WikiText...
   </div>
</div>

Unscoping of CSS

Example: results in the CSS being scoped to .mediawiki instead of .mw-parser-output.

Including such a call in a page essentially limits editing to users with the editinterface right. You can alternatively include a call to a template that includes the styles.

See also

• Extension:TemplateStyles