User:Tennessee Ernie Ford/Collapsible.js

/* */ /**** class CollapsibleTables.js * (c) 2007 by Patrick Westerhoff [poke] * * This class allows to make tables collapsible and adds a show/hide button to * affected tables. Tables which class attribute contains 'collapsible' or * 'expandable' are affected by this class and can be collapsed; the latter * automatically hides the content of all sections. * Header rows are used to divide the table into sections which can be collapsed * separately. By default the first row of the table is interpreted as a header * row, however this can be overwritten by adding 'collapsible' to the class * attribute of header rows. You can also hide a section individually by default * when in 'collapsible' mode by using 'expandable' as the row's class name * instead. */

function CollapsibleTables { var classCollapsible = 'collapsible'; var classExpandable = 'expandable'; var linkTextShow    = '[show]'; var linkTextHide    = '[hide]'; var reCollapsible   = new RegExp( '(?:\\s|^)' + classCollapsible + '(?:\\s|$)' ); var reExpandable    = new RegExp( '(?:\\s|^)' + classExpandable  + '(?:\\s|$)' ); var sections        = new Array; // link element var linkElement              = document.createElement( 'a' ); linkElement.style.fontSize   = '85%'; linkElement.style.fontWeight = 'normal'; linkElement.style.width      = '3em'; linkElement.style.cssFloat   = 'right'; linkElement.style.styleFloat = 'right'; linkElement.style.textAlign  = 'center'; linkElement.style.marginLeft = '1em'; linkElement.style.padding    = '0px 3px'; linkElement.href             = 'javas' + 'cript:void(0);'; initialize; /** private void initialize :: initializes CollapsibleTables class **/ function initialize {   if ( wgIsArticle == false && window.location.href.indexOf( 'action=submit' ) < 0 ) return; var docContent   = document.getElementById( 'bodyContent' ) || document.getElementById( 'article' ) || document.getElementById( 'mw_contentholder' ); var tables       = docContent.getElementsByTagName( 'table' ); var sectionId    = -1; var defaultStatus; for ( var i = 0, n = tables.length; i < n; i++ ) {     if ( reCollapsible.test( tables[i].className ) ) defaultStatus = true; else if ( reExpandable.test( tables[i].className ) ) defaultStatus = false; else continue; var tableRows   = tables[i].rows; var sectionFound = false; var status      = false; for ( var j = 0, m = tableRows.length; j < m; j++ ) {       if ( reCollapsible.test( tableRows[j].className ) ) status = true; else if ( reExpandable.test( tableRows[j].className ) ) status = false; else {         if ( sectionFound ) {           sections[ sectionId ].content.push( tableRows[j] ); tableRows[j].style.display = sections[ sectionId ].status ? '' : 'none'; }         continue; }       var section     = new Object; section.header = tableRows[j]; section.content = new Array; section.status = defaultStatus ? status : false; sections[ ++sectionId ] = section; sectionFound           = true; initHeaderRow( tableRows[j], sectionId, section.status ); }     if ( sectionFound == false ) {       var section       = new Object; section.header   = tableRows[0]; section.content  = new Array; section.status   = defaultStatus; for ( var j = 1; j < tableRows.length; j++ ) {         section.content.push( tableRows[j] ); tableRows[j].style.display = section.status ? '' : 'none'; }       sections[ ++sectionId ] = section; initHeaderRow( tableRows[0], sectionId, defaultStatus ); }   }  }  /** private void initHeaderRow ( headerRow, sectionId, sectionStatus ) :: adds show/hide button **/ function initHeaderRow ( headerRow, sectionId, sectionStatus ) {   var lastCell, link; headerRow.id = 'collapsible-section_' + sectionId; lastCell    = headerRow.cells[ headerRow.cells.length - 1 ]; link        = linkElement.cloneNode( false ); link.onclick = toggleSection; link.appendChild( document.createTextNode( sectionStatus ? linkTextHide : linkTextShow ) ); lastCell.insertBefore( link, lastCell.firstChild ); } /** private void toggleSection  :: onclick event handler **/ function toggleSection {   var trHead  = this.parentNode.parentNode; var section = sections[ trHead.id.substr( 20 ) ]; var content = section.content; var display = section.status ? 'none' : ''; for ( var i = 0, n = content.length; i < n; i++ ) content[i].style.display = display; section.status      = !section.status; this.firstChild.data = section.status ? linkTextHide : linkTextShow; } } /* */