MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

function ModifySidebar( action, section, name, link ) {
        try {
                switch ( section ) {
                        case 'languages':
                                var target = 'p-lang';
                                break;
                        case 'toolbox':
                                var target = 'p-tb';
                                break;
                        case 'navigation':
                                var target = 'p-navigation';
                                break;
                        default:
                                var target = 'p-' + section;
                                break;
                }
 
                if ( action == 'add' ) {
                        var node = document.getElementById( target )
                                                           .getElementsByTagName( 'div' )[0]
                                                           .getElementsByTagName( 'ul' )[0];
 
                        var aNode = document.createElement( 'a' );
                        var liNode = document.createElement( 'li' );
 
                        aNode.appendChild( document.createTextNode( name ) );
                        aNode.setAttribute( 'href', link );
                        liNode.appendChild( aNode );
                        liNode.className = 'plainlinks';
                        node.appendChild( liNode );
                }
 
                if ( action == 'remove' ) {
                        var list = document.getElementById( target )
                                                           .getElementsByTagName( 'div' )[0]
                                                           .getElementsByTagName( 'ul' )[0];
 
                        var listelements = list.getElementsByTagName( 'li' );
 
                        for ( var i = 0; i < listelements.length; i++ ) {
                                if (
                                        listelements[i].getElementsByTagName( 'a' )[0].innerHTML == name ||
                                        listelements[i].getElementsByTagName( 'a' )[0].href == link
                                )
                                {
                                        list.removeChild( listelements[i] );
                                }
                        }
                }
 
        } catch( e ) {
                // let's just ignore what's happened
                return;
        }
}
 
function CustomizeModificationsOfSidebar() {
        // adds [[Special:CategoryTree]] to toolbox
        ModifySidebar( 'add', 'Welcome', 'Hello world', 'http://en.wikipedia.org/wiki/Welcome' );
        // removes [[Special:Upload]] from toolbox
        ModifySidebar( 'remove', 'Next-versions', 'Next components', 'http://www.afsg.nl/IMAGEwiki/Category:Next:Component' );
}
 
if ( isArray( wgUserGroups ) ) {
        if ( wgUserGroups.Contains( 'Viewer' ) ) {
                addOnloadHook( CustomizeModificationsOfSidebar );
        }
}

function isObject( obj ) {
        return typeof obj == 'object' && obj != null;
}
 
function isArray( obj ) {
        return isObject( obj ) && obj.constructor.toString().indexOf( 'Array' ) != -1;
}
 
Array.prototype.Contains = function( element, strict ) {
        for( i in this ) {
                if( this[i] == element && !strict || this[i] === element ) {
                        return true;
                }
        }
        return false;
}