MediaWiki:Common.js

/* 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);
    };
})();

/** Interwiki links to featured articles ***************************************
 *
 *  Description: Highlights interwiki links to featured articles (or
 *               equivalents) by changing the bullet before the interwiki link
 *               into a star.
 *  Maintainers: [[User:R. Koot]]
 */

function LinkFA() {
    if ( document.getElementById( "p-lang" ) ) {
        var InterwikiLinks = document.getElementById( "p-lang" ).getElementsByTagName( "li" );

        for ( var i = 0; i < InterwikiLinks.length; i++ ) {
            if ( document.getElementById( InterwikiLinks[i].className + "-fa" ) && InterwikiLinks[i].className.indexOf( "badge-featuredarticle" ) === -1 ) {
                InterwikiLinks[i].className += " FA"
                InterwikiLinks[i].title = "This is a featured article in another language.";
            }
        }
    }
}

$( LinkFA );

/** Collapsible tables *********************************************************
 *
 *  Description: Allows tables to be collapsed, showing only the header. See
 *               [[Wikipedia:NavFrame]].
 *  Maintainers: [[User:R. Koot]]
 */

var autoCollapse = 2;
var collapseCaption = "fjal";
var expandCaption = "vís";

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

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

    var Rows = Table.getElementsByTagName( "tr" );

    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" ) ) {
            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.style.styleFloat = "right";
            Button.style.cssFloat = "right";
            Button.style.fontWeight = "normal";
            Button.style.textAlign = "right";
            Button.style.width = "6em";

            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( "]" ) );

            var Header = Tables[i].getElementsByTagName( "tr" )[0].getElementsByTagName( "th" )[0];
            /* only add button and increment count if there is a header row to work with */
            if (Header) {
                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 );
        }
    }
}

$( createCollapseButtons );

/** Dynamic Navigation Bars (experimental) *************************************
 *
 *  Description: See [[Wikipedia:NavFrame]].
 *  Maintainers: UNMAINTAINED
 */

 // set up the words in your language
 var NavigationBarHide = '[' + collapseCaption + ']';
 var NavigationBarShow = '[' + expandCaption + ']';

 // set up max count of Navigation Bars on page,
 // if there are more, all will be hidden
 // NavigationBarShowDefault = 0; // all bars will be hidden
 // NavigationBarShowDefault = 1; // on pages with more than 1 bar all bars will be hidden
 var NavigationBarShowDefault = autoCollapse;


 // shows and hides content and picture (if available) of navigation bars
 // Parameters:
 //     indexNavigationBar: the index of navigation bar to be toggled
 function toggleNavigationBar(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, 'NavPic' ) ) {
                NavChild.style.display = 'none';
            }
            if ( hasClass( NavChild, 'NavContent') ) {
                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, 'NavPic')) {
                NavChild.style.display = 'block';
            }
            if (hasClass(NavChild, 'NavContent')) {
                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 NavToggleText = document.createTextNode(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")) {
                NavFrame.childNodes[j].appendChild(NavToggle);
              }
            }
            NavFrame.setAttribute('id', 'NavFrame' + indexNavigationBar);
        }
    }
    // if more Navigation Bars found than Default: hide all
    if (NavigationBarShowDefault < indexNavigationBar) {
        for(
                var i=1;
                i<=indexNavigationBar;
                i++
        ) {
            toggleNavigationBar(i);
        }
    }

 }

 $( createNavigationBarToggleButton );

function mainPageAppendCompleteListLink() {
    try {
        var node = document.getElementById( "p-lang" )
                           .getElementsByTagName('div')[0]
                           .getElementsByTagName('ul')[0];

        var aNode = document.createElement( 'a' );
        var liNode = document.createElement( 'li' );

        aNode.appendChild( document.createTextNode( 'Øll mál' ) );
        aNode.setAttribute( 'href' , '//meta.wikimedia.org/wiki/List_of_Wikipedias' );
        liNode.appendChild( aNode );
        liNode.className = 'interwiki-completelist';
        node.appendChild( liNode );
     } catch(e) {
       // lets just ignore what's happened
       return;
    }
}

if ( mw.config.get('wgIsMainPage') ) {
       $( mainPageAppendCompleteListLink );
}

/** "Technical restrictions" title fix *****************************************
 *
 *  Description:
 *  Maintainers: [[User:Interiot]], [[User:Mets501]]
 */

// For pages that have something like Template:Lowercase, replace the title, but only if it is cut-and-pasteable as a valid wikilink.
// (for instance [[iPod]]'s title is updated.  <nowiki>But [[C#]] is not an equivalent wikilink, so [[C Sharp]] doesn't have its main title changed)</nowiki>
//
// The function looks for a banner like this: <nowiki>
// <div id="RealTitleBanner">    <!-- div that gets hidden -->
//   <span id="RealTitle">title</span>
// </div>
// </nowiki>An element with id=DisableRealTitle disables the function.
var disableRealTitle = 0;      // users can disable this by making this true from their monobook.js
if (mw.config.get('wgIsArticle')) {         // don't display the RealTitle when editing, since it is apparently inconsistent (doesn't show when editing sections, doesn't show when not previewing)
    $(function() {
   try {
       var realTitleBanner = document.getElementById("RealTitleBanner");
       if (realTitleBanner && !document.getElementById("DisableRealTitle") && !disableRealTitle) {
           var realTitle = document.getElementById("RealTitle");
           if (realTitle) {
               var realTitleHTML = realTitle.innerHTML;
               realTitleText = pickUpText(realTitle);

               var isPasteable = 0;
               //var containsHTML = /</.test(realTitleHTML);   // contains ANY HTML
               var containsTooMuchHTML = /</.test( realTitleHTML.replace(/<\/?(sub|sup|small|big)>/gi, "") ); // contains HTML that will be ignored when cut-n-pasted as a wikilink
               // calculate whether the title is pasteable
               var verifyTitle = realTitleText.replace(/^ +/, "");     // trim left spaces
               verifyTitle = verifyTitle[0].toUpperCase() + verifyTitle.substring(1, verifyTitle.length);   // uppercase first character

               // if the namespace prefix is there, remove it on our verification copy.  If it isn't there, add it to the original realValue copy.
               if (mw.config.get('wgNamespaceNumber') != 0) {
                   if (mw.config.get('wgCanonicalNamespace') == verifyTitle.substr(0, mw.config.get('wgCanonicalNamespace').length).replace(/ /g, "_") && verifyTitle.charAt(mw.config.get('wgCanonicalNamespace').length) == ":") {
                       verifyTitle = verifyTitle.substr(mw.config.get('wgCanonicalNamespace').length + 1);
                   } else {
                       realTitleText = mw.config.get('wgCanonicalNamespace').replace(/_/g, " ") + ":" + realTitleText;
                       realTitleHTML = mw.config.get('wgCanonicalNamespace').replace(/_/g, " ") + ":" + realTitleHTML;
                   }
               }

               // verify whether wgTitle matches
               verifyTitle = verifyTitle.replace(/^ +/, "").replace(/ +$/, "");        // trim left and right spaces
               verifyTitle = verifyTitle.replace(/_/g, " ");       // underscores to spaces
               verifyTitle = verifyTitle[0].toUpperCase() + verifyTitle.substring(1, verifyTitle.length);   // uppercase first character
               isPasteable = (verifyTitle == mw.config.get('wgTitle'));

               var h1 = document.getElementsByTagName("h1")[0];
               if (h1 && isPasteable) {
                   h1.innerHTML = containsTooMuchHTML ? realTitleText : realTitleHTML;
                   if (!containsTooMuchHTML)
                       realTitleBanner.style.display = "none";
               }
               document.title = realTitleText + " - Wikipedia, the free encyclopedia";
           }
       }
   } catch (e) {
       /* Something went wrong. */
   }
    });
}


// similar to innerHTML, but only returns the text portions of the insides, excludes HTML
function pickUpText(aParentElement) {
  var str = "";

  function pickUpTextInternal(aElement) {
    var child = aElement.firstChild;
    while (child) {
      if (child.nodeType == 1)     // ELEMENT_NODE
        pickUpTextInternal(child);
      else if (child.nodeType == 3)    // TEXT_NODE
        str += child.nodeValue;

      child = child.nextSibling;
    }
  }

  pickUpTextInternal(aParentElement);

  return str;
}

//fix edit summary prompt for undo
//this code fixes the fact that the undo function combined with the "no edit summary prompter" causes problems if leaving the
//edit summary unchanged
//this was added by [[User:Deskana]], code by [[User:Tra]]
$(function () {
  if (document.location.search.indexOf("undo=") != -1
  && document.getElementsByName('wpAutoSummary')[0]) {
    document.getElementsByName('wpAutoSummary')[0].value='';
  }
})

/** Add dismiss button to watchlist-message *************************************
 *
 *  Description: Hide the watchlist message for one week.
 *  Maintainers: [[User:Ruud Koot|Ruud Koot]]
 */

function addDismissButton() {
   var watchlistMessage = document.getElementById("watchlist-message");
   if ( watchlistMessage == null ) return;

   if ( document.cookie.indexOf( "hidewatchlistmessage=yes" ) != -1 ) {
       watchlistMessage.style.display = "none";
   }

   var Button     = document.createElement( "span" );
   var ButtonLink = document.createElement( "a" );
   var ButtonText = document.createTextNode( "fjal" );

   ButtonLink.setAttribute( "id", "dismissButton" );
   ButtonLink.setAttribute( "href", "javascript:dismissWatchlistMessage();" );
   ButtonLink.setAttribute( "title", "Fjal hesu boð í eina viku" );
   ButtonLink.appendChild( ButtonText );

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

   watchlistMessage.appendChild( Button );
}

function dismissWatchlistMessage() {
    var e = new Date();
    e.setTime( e.getTime() + (7*24*60*60*1000) );
    document.cookie = "hidewatchlistmessage=yes; expires=" + e.toGMTString() + "; path=/";
    var watchlistMessage = document.getElementById("watchlist-message");
    watchlistMessage.style.display = "none";
}

$( addDismissButton );