MediaWiki:Common.js

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

/* Test if an element has a certain class
 *
 * @deprecated:  Use $(element).hasClass() instead.
 */
 
window.hasClass = ( function() {
    var reCache = {};
    return function (element, className) {
        return (reCache[className] ? reCache[className] : (reCache[className] = new RegExp("(?:\\s|^)" + className + "(?:\\s|$)"))).test(element.className);
    };
})();

/* Helper script for .hlist class in common.css
 */
 
if ( $.client.profile().name == 'msie' ) {
  /* Add pseudo-selector class to last child list items in IE 8 */
  if ( $.client.profile().versionBase == '8' ) {
    $( '.hlist' ).find( 'dd:last-child, dt:last-child, li:last-child' )
      .addClass( 'hlist-last-child' );
  }
  /* Generate interpuncts and parens for IE < 8 */
  if ( $.client.profile().versionBase < '8' ) {
    $( '.hlist' ).find( 'dt + dd, dt + dt' ).prev()
      .append( '<b>:</b> ' );
    $( '.hlist' ).find( 'dd + dd, dd + dt, li + li' ).prev()
      .append( '<b>·</b> ' );
    $( '.hlist' ).find( 'dl dl, ol ol, ul ul' )
      .prepend( '( ' ).append( ') ' );
  }
}
 

/** Collapsible tables *********************************************************
 *
 *  Description: Allows tables to be collapsed, showing only the header. See
 *               [[Wikipedia:NavFrame]].
 *  Maintainers: [[User:R. Koot]]
 */
 
var autoCollapse = 2;
var collapseCaption = "hide";
var expandCaption = "show";
 
window.collapseTable = function( 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 Common.css
 
            ButtonLink.style.color = Header.style.color;
            ButtonLink.setAttribute( "id", "collapseButton" + tableIndex );
            ButtonLink.setAttribute( "href", "#" );
            addHandler( ButtonLink,  "click", new Function( "evt", "collapseTable(" + tableIndex + " ); return killEvt( evt );") );
            ButtonLink.appendChild( ButtonText );
 
            Button.appendChild( document.createTextNode( "[" ) );
            Button.appendChild( ButtonLink );
            Button.appendChild( document.createTextNode( "]" ) );
 
            Header.insertBefore( Button, Header.firstChild );
            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;
                }
            }
        }
    }
}
 
$( createCollapseButtons );
 
 
/** Dynamic Navigation Bars (experimental) *************************************
 *
 *  Description: See [[Wikipedia:NavFrame]].
 *  Maintainers: UNMAINTAINED
 */
 
// set up the words in your language
var NavigationBarHide = '[' + collapseCaption + ']';
var NavigationBarShow = '[' + expandCaption + ']';
 
// shows and hides content and picture (if available) of navigation bars
// Parameters:
//     indexNavigationBar: the index of navigation bar to be toggled
window.toggleNavigationBar = function(indexNavigationBar){
    var NavToggle = document.getElementById("NavToggle" + indexNavigationBar);
    var NavFrame = document.getElementById("NavFrame" + indexNavigationBar);
 
    if (!NavFrame || !NavToggle) {
        return false;
    }
 
    // if shown now
    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;
 
    // if hidden now
    } 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;
    }
}
 
// adds show/hide-button to navigation bars
function createNavigationBarToggleButton(){
    var indexNavigationBar = 0;
    // iterate over all < div >-elements 
    var divs = document.getElementsByTagName("div");
    for (var i = 0; NavFrame = divs[i]; i++) {
        // if found a navigation bar
        if (hasClass(NavFrame, "NavFrame")) {
 
            indexNavigationBar++;
            var NavToggle = document.createElement("a");
            NavToggle.className = 'NavToggle';
            NavToggle.setAttribute('id', 'NavToggle' + indexNavigationBar);
            NavToggle.setAttribute('href', 'javascript:toggleNavigationBar(' + indexNavigationBar + ');');
 
            var isCollapsed = hasClass( NavFrame, "collapsed" );
            /*
             * Check if any children are already hidden.  This loop is here for backwards compatibility:
             * the old way of making NavFrames start out collapsed was to manually add style="display:none"
             * to all the NavPic/NavContent elements.  Since this was bad for accessibility (no way to make
             * the content visible without JavaScript support), the new recommended way is to add the class
             * "collapsed" to the NavFrame itself, just like with collapsible tables.
             */
            for (var NavChild = NavFrame.firstChild; NavChild != null && !isCollapsed; NavChild = NavChild.nextSibling) {
                if ( hasClass( NavChild, 'NavPic' ) || hasClass( NavChild, 'NavContent' ) ) {
                    if ( NavChild.style.display == 'none' ) {
                        isCollapsed = true;
                    }
                }
            }
            if (isCollapsed) {
                for (var NavChild = NavFrame.firstChild; NavChild != null; NavChild = NavChild.nextSibling) {
                    if ( hasClass( NavChild, 'NavPic' ) || hasClass( NavChild, 'NavContent' ) ) {
                        NavChild.style.display = 'none';
                    }
                }
            }
            var NavToggleText = document.createTextNode(isCollapsed ? NavigationBarShow : NavigationBarHide);
            NavToggle.appendChild(NavToggleText);
 
            // Find the NavHead and attach the toggle link (Must be this complicated because Moz's firstChild handling is borked)
            for(var j=0; j < NavFrame.childNodes.length; j++) {
                if (hasClass(NavFrame.childNodes[j], "NavHead")) {
                    NavToggle.style.color = NavFrame.childNodes[j].style.color;
                    NavFrame.childNodes[j].appendChild(NavToggle);
                }
            }
            NavFrame.setAttribute('id', 'NavFrame' + indexNavigationBar);
        }
    }
}
 
$( createNavigationBarToggleButton );

//
// Drop down list code
//
function ddm()
{

// Variables, change these in case you need to set other class names (mmhide_ for 
// contribute users for example)
var parentClass='isParent';      //gets applied when the LI has a nested UL
var activeParentClass='isActive';        //gets applied when the nested UL is visible
var preventHoverClass='nohover';         //denotes a navigation that should not get any hover effects
var indicateJSClass='dhtml';     //gets applied to the main navigation when Javascript is available
var toHideClass='hiddenChild';   //gets applied to hide the nested UL
var toShowClass='shownChild';    //gets applied to show the nested UL
var currentClass='current';      //denotes the current active sub element and prevents collapsing
var d=document.getElementById('nav');   //denotes the navigation element 

// if DOM is not available stop right here.
if(!document.getElementById && !document.createTextNode){return;}

// if the navigation element is available, apply the class denoting DHTML capabilities
if(d)
{
d.className+=d.className==''?indicateJSClass:' '+indicateJSClass;
var lis,i,firstUL,j,apply;

// loop through all LIs and check which ones have a nested UL
lis=d.getElementsByTagName('li');
for(i=0;i<lis.length;i++)
{
firstUL=lis[i].getElementsByTagName('ul')[0]
// if there is a nested UL, deactivate the first nested link and apply the class to show 
// there is a nested list
if(firstUL)
{
lis[i].childNodes[0].onclick=function(){return false;}
lis[i].className+=lis[i].className==''?parentClass:' '+parentClass;
// check if there is a "current" element 
apply=true;
if(new RegExp('\\b'+currentClass+'\\b').test(lis[i].className)){apply=false;}
if(apply)
{
for(j=0;j<firstUL.getElementsByTagName('li').lengt h;j++)
{
if(new RegExp('\\b'+currentClass+'\\b').test(firstUL.getE lementsByTagName('li')[j].className)){apply=false;break}
}
}
// if there is no current element, apply the class to hide the nested list
if(apply)
{
firstUL.className+=firstUL.className==''?toHideCla ss:' '+toHideClass;
// check if there is a class to prevent hover effects and only apply the function
// onclick if that is the case, otherwise apply it onclick and onhover
if(new RegExp('\\b'+preventHoverClass+'\\b').test(d.class Name))
{
lis[i].onclick=function(){doddm(this);}
} else {
lis[i].onclick=function(){doddm(this);}
lis[i].onmouseover=function(){doddm(this);}
lis[i].onmouseout=function(){doddm(null);}
}
// if there is a current element, define the list as being kept open and apply the 
// classes to show the nested list and define the parent LI as an active one
} else {
lis[i].keepopen=1;
firstUL.className+=firstUL.className==''?toShowCla ss:' '+toShowClass;
lis[i].className=lis[i].className.replace(parentClass,activeParentClass);
}
}
}
}
// function to show and hide the nested lists and add the classes to the parent LIs
function doddm(o)
{
var childUL,isobj,swap;

// loop through all LIs of the navigation       
lis=d.getElementsByTagName('li');
for(i=0;i<lis.length;i++)
{
isobj=lis[i]==o;
// function to exchange class names in an object
swap=function(tmpobj,tmporg,tmprep)
{
tmpobj.className=tmpobj.className.replace(tmporg,t mprep)       
}
// if the current LI does not have an indicator to be kept visible
if(!lis[i].keepopen)
{
childUL=lis[i].getElementsByTagName('ul')[0];
// check if there is a nested UL and if the current LI is not the one clicked on
// and exchange the classes accordingly (ie. hide all other nested lists and 
// make the LIs parent rather than active.
if(childUL)     
{       
if(new RegExp('\\b'+preventHoverClass+'\\b').test(d.class Name))
{
if(new RegExp('\\b'+activeParentClass+'\\b').test(lis[i].className))
{
swap(childUL,isobj?toShowClass:toHideClass,isobj?t oHideClass:toShowClass);     
swap(lis[i],isobj?activeParentClass:parentClass,isobj?parentC lass:activeParentClass);  
} else {

swap(childUL,isobj?toHideClass:toShowClass,isobj?t oShowClass:toHideClass);     
swap(lis[i],isobj?parentClass:activeParentClass,isobj?activeP arentClass:parentClass);  
}
} else {
swap(childUL,isobj?toHideClass:toShowClass,isobj?t oShowClass:toHideClass);     
swap(lis[i],isobj?parentClass:activeParentClass,isobj?activeP arentClass:parentClass);  
}
} 
}
}
}
}
window.onload=function()
{
ddm();
// add other functions to be called onload below
}