MediaWiki: Add SyntaxHighlighter (custom css and js)

I set up my own MediaWiki for Brainstorming and as a storage for informations (like Snippets).
For the Snippets I need a SyntaxHighlighter and choose my favorite

Therefore I had to add the CSS- and JS-Files to the Theme. This is done by adding the following lines of code to the method “initPage” of the theme-file:

// Adding the syntaxhighlighter:
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shCore.js" );
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shBrushJScript.js" );
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shBrushCss.js" );
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shBrushJava.js" );
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shBrushPhp.js" );
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shBrushPlain.js" );
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shBrushSql.js" );
$out->addScriptFile( "/wiki/resources/syntaxhighlighter/scripts/shBrushXml.js" );
$out->addInlineScript( "SyntaxHighlighter.all();" );
$out->addStyle( "/wiki/resources/syntaxhighlighter/styles/shCoreDefault.css" );
$out->addStyle( "/wiki/resources/syntaxhighlighter/styles/shThemeRDark.css" );

Please change the paths for your purposes.

For a better look I added the following styles to the file shCoreDefault.css.

/* Custom CSS: */
.syntaxhighlighter {
    padding-top: 10px;
    padding-bottom: 10px;

For more informations how you can add custom files and header data, take a look at the official MediaWiki-Wiki manual: Manual:Hooks/BeforePageDisplay