MediaWiki:Navigation.js

/** Collapsible tables *********************************************************
 *
 *  Description: Allows tables to be collapsed, showing only the header. See
 *                         http://www.mediawiki.org/wiki/Manual:Collapsible_tables.
 *  Maintainers: [[en: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 );
                } else if ( hasClass( NavigationBoxes[i], 'innercollapse' ) ) {
                        var element = NavigationBoxes[i];
                        while ( element = element.parentNode ) {
                                if ( hasClass( element, 'outercollapse' ) ) {
                                        collapseTable( i );
                                        break;
                                }
                        }
                }
        }
}
 
addOnloadHook( createCollapseButtons );

// Faster Dynamic Navigation
 
// set up the words in your language
var NavigationBarHide = '▲';
var NavigationBarShow = '▼';
 
var NavigationTitleHide = 'hide contents';
var NavigationTitleShow = 'show contents';
 
// shows and hides content and picture (if available) of navigation bars
function toggleNavigationBar(e)
{
  e = e || window.event;
  var target = e.target || e.srcElement;
  var NavFrame, NavToggle;
 
  if (hasClass(target, 'NavToggle')) {
    NavFrame = target.parentNode.parentNode;
    NavToggle = target;
  } else if (hasClass(target, 'NavHead')) {
    NavFrame = target.parentNode;

    if (hasClass(target.lastChild, 'NavToggle'))
      NavToggle = target.lastChild;
    else
      return;
  }

  if (NavToggle.firstChild.data == NavigationBarHide) {
    for (var NavChild=NavFrame.firstChild; NavChild != null; NavChild=NavChild.nextSibling) {
      if (hasClass(NavChild, 'NavContent') || hasClass(NavChild, 'NavPic'))
        NavChild.style.display = 'none';
    }
    NavToggle.firstChild.data = NavigationBarShow;
    NavToggle.parentNode.setAttribute('title', NavigationTitleShow);
  } else if (NavToggle.firstChild.data == NavigationBarShow) {
    for (var NavChild = NavFrame.firstChild; NavChild != null; NavChild = NavChild.nextSibling) {
      if (hasClass(NavChild, 'NavContent') || hasClass(NavChild, 'NavPic'))
        NavChild.style.display = 'block';
    }
    NavToggle.firstChild.data = NavigationBarHide;
    NavToggle.parentNode.setAttribute('title', NavigationTitleHide);
  }
}
 
// adds show/hide-button to navigation bars
function createNavigationBarToggleButton()
{
  // iterate over all div elements
  var NavFrame=document.getElementsByTagName("div");

  for (var i=0; i < NavFrame.length; i++)
  {
    if (!hasClass(NavFrame[i], "NavFrame"))
      continue;

    var NavToggle = document.createElement("a");
    var NavToggleText = document.createTextNode(hasClass(NavFrame[i], "selected") ? NavigationBarShow : NavigationBarHide);

    NavToggle.className = 'NavToggle';
    NavToggle.appendChild(NavToggleText);
 
    // add NavToggle-Button as element inside of NavHead
    for (var j=0; j < NavFrame[i].childNodes.length; j++) {
      var NavHead = NavFrame[i].childNodes[j];
 
      if (!hasClass(NavHead, "NavHead"))
        continue;
      NavHead.appendChild(NavToggle);
      NavHead.onclick = toggleNavigationBar;
 
      // only bother to emulate click if if toggle button was added
      if (document.createEvent) { // DOM 2 and DOM 3 compliant browsers
        var e = document.createEvent("MouseEvents");
        e.initMouseEvent("click", true,true, window, 0,0,0,0,0, false,false,false,false, 0, null);
        NavHead.dispatchEvent(e);
      } else if (NavHead.fireEvent) { // IE
        NavHead.fireEvent("onclick");
      }
      break;
    }
  }
}

addOnloadHook( createNavigationBarToggleButton );