Difference between revisions of "MediaWiki:Common.js"

/* <!-- Add source highlighting to preview page --> <source lang=javascript> */
 /* Test if an element has a certain class **************************************
  *
  * Description: Uses regular expressions and caching for better performance.
  * Copied from: [[wikipedia:MediaWiki:Common.js]]
  */
 
 var hasClass = (function () {
     var reCache = {};
     return function (element, className) {
         return (reCache[className] ? reCache[className] : (reCache[className] = new RegExp("(?:\\s|^)" + className + "(?:\\s|$)"))).test(element.className);
     };
 })();
 
 /** Collapsible tables *********************************************************
  *
  * Description: Allows tables to be collapsed, showing only the header. See
  *              [[wikipedia:Project:NavFrame]].
  * Copied from: [[wikipedia:MediaWiki:Common.js]]
  */
 
 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.style.styleFloat = "right";
             Button.style.cssFloat = "right";
             Button.style.fontWeight = "normal";
             Button.style.textAlign = "right";
             Button.style.width = "6em";
 
             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 );
 
/* Hidden blocks ***********************************************************
 *
 * Description: Similar to collapsible tables, hidden blocks' visibility can
 *              be toggled on and off.
 */
function toggleHiddenBlock(blockIndex)
{
  var Button = document.getElementById("toggleBlockButton" + blockIndex);
  var Block = document.getElementById("hiddenBlock" + blockIndex);
 
  if (!Block || !Button) {
    return false;
  }
 
  if (Button.firstChild.data == collapseCaption) {
    Block.style.display = "none";
    Button.firstChild.data = expandCaption;
  } else {
    Block.style.display = "block";
    Button.firstChild.data = collapseCaption;
  }
}
 
function createShowBlockButtons()
{
  var blockIndex = 0;
  var Blocks = document.getElementsByTagName("div");
 
  for (var i = 0; i < Blocks.length; i++) {
    if (hasClass(Blocks[i], "hidden-block" ) ) {
      var Hint = Blocks[i].getElementsByTagName("span")[0];
      if (!Hint) continue;
      var HiddenBlock = Blocks[i].getElementsByTagName("div")[0];
      if (!HiddenBlock) continue;
 
      HiddenBlock.setAttribute("id", "hiddenBlock" + blockIndex);
 
      var Button     = document.createElement("span");
      var ButtonLink = document.createElement("a");
      var ButtonText = document.createTextNode(collapseCaption);
 
      ButtonLink.style.color = Hint.style.color;
      ButtonLink.setAttribute("id", "toggleBlockButton" + blockIndex);
      ButtonLink.setAttribute("href", "javascript:toggleHiddenBlock(" + blockIndex + ");");
      ButtonLink.appendChild(ButtonText);
 
      Button.appendChild(document.createTextNode("["));
      Button.appendChild(ButtonLink);
      Button.appendChild(document.createTextNode("]"));
 
      Blocks[i].insertBefore(Button, HiddenBlock);
      blockIndex++;
    }
  }
 
  for (var i = 0; i < blockIndex; i++ ) {
    toggleHiddenBlock(i);
  }
}
 
addOnloadHook(createShowBlockButtons);
 
/* Change Watch URLs ***********************************************************
 *
 * Description: The format of watch URLs on this wiki is different from the
 * standard format.  Adjust the Ajax code to accommodate this.
 */
 
function changeWatchURLs() {
    wgAjaxWatch.setHref = function( string ) { 
        for( i = 0; i < wgAjaxWatch.watchLinks.length; i++ ) { 
            if( string == 'watch' ) { 
                wgAjaxWatch.watchLinks[i].href = wgAjaxWatch.watchLinks[i].href
                    .replace( /\/unwatch\//, '/watch/' );
            } else if( string == 'unwatch' ) { 
                wgAjaxWatch.watchLinks[i].href = wgAjaxWatch.watchLinks[i].href
                    .replace( /\/watch\//, '/unwatch/' );
            }
        }
    }
}
 
addOnloadHook( changeWatchURLs );
 
/** Extra toolbar options ******************************************************
  *
  *  Description: UNDOCUMENTED
  *  Copied from: [[wikipedia:MediaWiki:Common.js]]
  */
// To disable this script, add <code>mwCustomEditButtons = [];<code> to [[Special:Mypage/monobook.js]]
 
if (mwCustomEditButtons) {
  mwCustomEditButtons[mwCustomEditButtons.length] = {
    "imageFile": "http://upload.wikimedia.org/wikipedia/en/c/c8/Button_redirect.png",
    "speedTip": "Redirect",
    "tagOpen": "#REDIRECT [[",
    "tagClose": "]]",
    "sampleText": "Insert text"
  };
  mwCustomEditButtons[mwCustomEditButtons.length] = {
    "imageFile": "/w/images/Button_uscript.png",
    "speedTip": "UScript code",
    "tagOpen": "<uscript>",
    "tagClose": "</uscript>",
    "sampleText": "Insert code"
  };
 
}
 
/* </source> */