MediaWiki:Common.js

/* Any JavaScript here will be loaded for all users on every page load. */ /* */ /** Collapsible tables ********************************************************* * *  Description: Allows tables to be collapsed, showing only the header. See *              NavFrame. * Maintainer on Wikipedia: User:R. Koot

var autoCollapse = 2; var collapseCaption = 'hide'; var expandCaption = 'show';

function collapseTable( tableIndex ) { var Button = document.getElementById( 'collapseButton' + tableIndex ); var Table = document.getElementById( 'collapsibleTable' + tableIndex );

if ( !Table || !Button ) { return false; }

var Rows = Table.rows;

if ( Button.firstChild.data == collapseCaption ) { for ( var i = 1; i < Rows.length; i++ ) { Rows[i].style.display = 'none'; }		Button.firstChild.data = expandCaption; } else { for ( var i = 1; i < Rows.length; i++ ) { Rows[i].style.display = Rows[0].style.display; }		Button.firstChild.data = collapseCaption; } }

function createCollapseButtons { var tableIndex = 0; var NavigationBoxes = new Object; var Tables = document.getElementsByTagName( 'table' );

for ( var i = 0; i < Tables.length; i++ ) { if ( hasClass( Tables[i], 'collapsible' ) ) { /* only add button and increment count if there is a header row to work with */ var HeaderRow = Tables[i].getElementsByTagName( 'tr' )[0]; if( !HeaderRow ) continue; var Header = HeaderRow.getElementsByTagName( 'th' )[0]; if( !Header ) continue;

NavigationBoxes[tableIndex] = Tables[i]; Tables[i].setAttribute( 'id', 'collapsibleTable' + tableIndex );

var Button    = document.createElement( 'span' ); var ButtonLink = document.createElement( 'a' ); var ButtonText = document.createTextNode( collapseCaption );

Button.className = 'collapseButton'; // Styles are declared in MediaWiki:Common.css

ButtonLink.style.color = Header.style.color; ButtonLink.setAttribute( 'id', 'collapseButton' + tableIndex ); ButtonLink.setAttribute( 'href', "javascript:collapseTable(" + tableIndex + ");" ); ButtonLink.appendChild( ButtonText );

Button.appendChild( document.createTextNode( '[' ) ); Button.appendChild( ButtonLink ); Button.appendChild( document.createTextNode( ']' ) );

Header.insertBefore( Button, Header.childNodes[0] ); tableIndex++; }	}

for ( var i = 0; i < tableIndex; i++ ) { if ( hasClass( NavigationBoxes[i], 'collapsed' ) || ( tableIndex >= autoCollapse && hasClass( NavigationBoxes[i], 'autocollapse' ) ) ) { collapseTable( i ); }	} }

addOnloadHook( createCollapseButtons );

/** Test if an element has a certain class ************************************** * * Description: Uses regular expressions and caching for better performance. * Maintainers: User:Mike Dillon, User:R. Koot, User:SG */

var hasClass = (function {	var reCache = {};	return function( element, className ) {		return (reCache[className] ? reCache[className] : (reCache[className] = new RegExp("(?:\\s|^)" + className + "(?:\\s|$)"))).test(element.className);	}; });