Common.js – MediaWiki

/*****************************************************************************************
 * Any JavaScript here will be loaded for all users on every page load.
 *
 * As such, the content of this file page should be kept as minimal as possible.
 *
 *****************************************************************************************/

mw.loader.using( ["mediawiki.util", "jquery.client"], function() { /* BEGIN mw.loader WRAPPER */

	/*****************************************************************************************
	 * Redirect User:Name/skin.js and skin.css to the current skin's pages
	 * (unless the 'skin' page really exists)
	 * @source: http://www.mediawiki.org/wiki/Snippets/Redirect_skin.js
	 * @rev: 2
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	if ( mw.config.get( "wgArticleId" ) === 0 && mw.config.get( "wgNamespaceNumber" ) == 2 ) {
		var titleParts = mw.config.get( "wgPageName" ).split( "/" );
		// Make sure there was a part before and after the slash
		// And that the latter is "skin.js" or "skin.css"
		if ( titleParts.length == 2 ) {
			var userSkinPage = titleParts.shift() + "/" + mw.config.get( "skin" );
			if ( titleParts.slice( -1 ) == "skin.js" ) {
				window.location.href = mw.util.wikiGetlink( userSkinPage + ".js" );
			} else if ( titleParts.slice( -1 ) == "skin.css" ) {
				window.location.href = mw.util.wikiGetlink( userSkinPage + ".css" );
			}
		}
	}

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Map addPortletLink to mw.util
	 * Used for adding links to the left side navigation panel
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	window.addPortletLink = function() {
		return mw.util.addPortletLink.apply( mw.util, arguments );
	};

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Extract a URL parameter from the current URL
	 * @deprecated: Use mw.util.getParamValue with proper escaping
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	function getURLParamValue( paramName, url ) {
		return mw.util.getParamValue( paramName, url );
	}

	/*****************************************************************************************/

	/*****************************************************************************************
	 * &withCSS= and &withJS= URL parameters
	 * Allow to try custom scripts from MediaWiki space
	 * without editing personal .css or .js files
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	var extraCSS = mw.util.getParamValue( "withCSS" );
	if ( extraCSS && extraCSS.match( /^MediaWiki:[^&<>=%]*\.css$/ ) ) {
		importStylesheet( extraCSS );
	}
	var extraJS = mw.util.getParamValue( "withJS" );
	if ( extraJS && extraJS.match( /^MediaWiki:[^&<>=%]*\.js$/) ) {
		importScript( extraJS );
	}

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Internet Explorer bug fix
	 * Description: Fixes IE horizontal scrollbar bug
	 * Maintainers: [[User:Tom-]]?
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	if ( navigator.appName == "Microsoft Internet Explorer" ) {
		var oldWidth,
			docEl = document.documentElement,
			fixIEScroll = function() {
				if ( !oldWidth || docEl.clientWidth > oldWidth ) {
					doFixIEScroll();
				} else {
					setTimeout( doFixIEScroll, 1 );
				}
				oldWidth = docEl.clientWidth;
			},
			doFixIEScroll = function () {
				docEl.style.overflowX = ( docEl.scrollWidth - docEl.clientWidth < 4 ) ? "hidden" : "";
			};
		document.attachEvent( "onreadystatechange", fixIEScroll );
		document.attachEvent( "onresize", fixIEScroll );
		// In print IE (7?) does not like line-height
		mw.util.addCSS( "@media print { sup, sub, p, .documentDescription { line-height: normal; }}" );
		// IE overflow bug
		mw.util.addCSS( "div.overflowbugx { overflow-x: scroll !important; overflow-y: hidden !important; } div.overflowbugy { overflow-y: scroll !important; overflow-x: hidden !important; }" );
		// IE zoomfix
		// Use to fix right floating div/table inside tables
		mw.util.addCSS( ".iezoomfix div, .iezoomfix table { zoom: 1;}" );
		// .hlist fix for IE - remove dot after last list item
		if ( $.browser.version < "9.0" ) {
			$( function() {
				$( ".hlist" ).find( "li:last-child" ).css( "background", "none" ).css( "padding-right", "0" );
			} );
		}
	}

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Test if an element has a certain class
	 * Maintainers: [[User:Mike Dillon]], [[User:R. Koot]], [[User:SG]]
	 * @deprecated:  Use $(element).hasClass() instead.
	 * Copied from Wikipedia's 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
	 * Allows tables to be collapsed, showing only the header. See  [[Wikipedia:NavFrame]].
	 * @version 2.0.3 (2014-03-14)
	 * @source https://www.mediawiki.org/wiki/MediaWiki:Gadget-collapsibleTables.js
	 * @author [[User:R. Koot]]
	 * @author [[User:Krinkle]]
	 * @deprecated Since MediaWiki 1.20: Use class="mw-collapsible" instead which
	 *  is supported in MediaWiki core.
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	var autoCollapse = 2,
		collapseCaption = "hide",
		expandCaption = "show";
	function collapseTable( tableIndex ) {
		var Button = document.getElementById( "collapseButton" + tableIndex ),
			Table = document.getElementById( "collapsibleTable" + tableIndex );
		if ( !Table || !Button ) {
			return false;
		}
		var Rows = Table.rows,
			i;
		if ( Button.firstChild.data === collapseCaption ) {
			for ( i = 1; i < Rows.length; i++ ) {
				Rows[i].style.display = "none";
			}
			Button.firstChild.data = expandCaption;
		} else {
			for ( i = 1; i < Rows.length; i++ ) {
				Rows[i].style.display = Rows[0].style.display;
			}
			Button.firstChild.data = collapseCaption;
		}
	}
	function createClickHandler( tableIndex ) {
		return function( e ) {
			e.preventDefault();
			collapseTable( tableIndex );
		};
	}
	function createCollapseButtons() {
		var tableIndex = 0,
			NavigationBoxes = {},
			Tables = document.getElementsByTagName( "table" ),
			i;
		for ( i = 0; i < Tables.length; i++ ) {
			if ( $( Tables[i] ).hasClass( "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" ),
					ButtonLink = document.createElement( "a" ),
					ButtonText = document.createTextNode( collapseCaption );
				// Styles are declared in [[MediaWiki:Common.css]]
				Button.className = "collapseButton";
				ButtonLink.style.color = Header.style.color;
				ButtonLink.setAttribute( "id", "collapseButton" + tableIndex );
				ButtonLink.setAttribute( "href", "#" );
				$( ButtonLink ).on( "click", createClickHandler( tableIndex ) );
				ButtonLink.appendChild( ButtonText );
				Button.appendChild( document.createTextNode( "[" ) );
				Button.appendChild( ButtonLink );
				Button.appendChild( document.createTextNode( "]" ) );
				Header.insertBefore( Button, Header.firstChild );
				tableIndex++;
			}
		}
		for ( i = 0;  i < tableIndex; i++ ) {
			if ( $( NavigationBoxes[i] ).hasClass( "collapsed" ) ||
				( tableIndex >= autoCollapse && $( NavigationBoxes[i] ).hasClass( "autocollapse" ) )
			) {
				collapseTable( i );
			}
			else if ( $( NavigationBoxes[i] ).hasClass ( "innercollapse" ) ) {
				var element = NavigationBoxes[i];
				while ((element = element.parentNode)) {
					if ( $( element ).hasClass( "outercollapse" ) ) {
						collapseTable ( i );
						break;
					}
				}
			}
		}
	}
	mw.hook( "wikipage.content" ).add( createCollapseButtons );

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Dynamic Navigation Bars (experimental)
	 * Description: See [[Wikipedia:NavFrame]].
	 * Maintainers: UNMAINTAINED. Updated by BIKI User:Fred Gandt
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	// set up the words in your language
	var NavigationBarHide = "[" + collapseCaption + "]",
		NavigationBarShow = "[" + expandCaption + "]";
	// 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 ),
			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 ( $( NavChild ).hasClass( "NavContent" ) || $( NavChild ).hasClass( "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 ( $( NavChild ).hasClass( "NavContent" ) || $( NavChild ).hasClass( "NavPic" ) ) {
					NavChild.style.display = "block";
				}
			}
			NavToggle.firstChild.data = NavigationBarHide;
		}
	}
	// adds show/hide-button to navigation bars
	function createNavigationBarToggleButton() {
		var indexNavigationBar = 0,
			divs = document.getElementsByTagName( "div" );
		// iterate over all < div >-elements
		for ( var i = 0; NavFrame = divs[i]; i++ ) {
			// if found a navigation bar
			if ( $( NavFrame ).hasClass( "NavFrame" ) ) {
				indexNavigationBar++;
				var NavToggle = document.createElement( "a" );
				NavToggle.className = "NavToggle";
				NavToggle.setAttribute( "id", "NavToggle" + indexNavigationBar );
				NavToggle.setAttribute( "href", "javascript:toggleNavigationBar(" + indexNavigationBar + ");" );
				var isCollapsed = $( NavFrame ).hasClass( "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 ( $( NavChild ).hasClass( "NavPic" ) || $( NavChild ).hasClass( "NavContent" ) ) {
						if ( NavChild.style.display == "none" ) {
							isCollapsed = true;
						}
					}
				}
				if ( isCollapsed ) {
					for ( var NavChild = NavFrame.firstChild; NavChild != null; NavChild = NavChild.nextSibling ) {
						if ( $( NavChild ).hasClass( "NavPic" ) || $( NavChild ).hasClass( "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 ( $( NavFrame.childNodes[j] ).hasClass( "NavHead" ) ) {
						NavToggle.style.color = NavFrame.childNodes[j].style.color;
						NavFrame.childNodes[j].appendChild( NavToggle );
					}
				}
				NavFrame.setAttribute( "id", "NavFrame" + indexNavigationBar );
			}
		}
	}
	mw.hook( "wikipage.content" ).add( createNavigationBarToggleButton );

	/*****************************************************************************************/

	/*****************************************************************************************
	 * uploadwizard_newusers
	 * Switches in a message for non-autoconfirmed users at [[Wikipedia:Upload]]
	 * Maintainers: [[User:Krimpet]]
	 * Copied from Wikipedia's MediaWiki:Common.js
	 */

	function uploadwizard_newusers() {
		if ( mw.config.get( "wgNamespaceNumber" ) == 4 && wgTitle == "Upload" && wgAction == "view" ) {
			var oldDiv = document.getElementById( "autoconfirmedusers" ),
				newDiv = document.getElementById( "newusers" );
			if ( oldDiv && newDiv ) {
				if ( typeof wgUserGroups == "object" && wgUserGroups ) {
					for ( i = 0; i < wgUserGroups.length; i++ ) {
						if ( wgUserGroups[i] == "autoconfirmed")  {
							oldDiv.style.display = "block";
							newDiv.style.display = "none";
							return;
						}
					}
				}
				oldDiv.style.display = "none";
				newDiv.style.display = "block";
				return;
			}
		}
	}
	mw.hook( "wikipage.content" ).add( uploadwizard_newusers );

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Conditionally import further JavaScript for specific situations.
	 */

	function conditionallyImport() {
		if ( mw.config.get( "wgAction" ) === "edit" || mw.config.get( "wgAction" ) === "submit" ) {
			importScript( "MediaWiki:Editing.js" );
		}
		if ( mw.config.get( "wgCanonicalNamespace" ) != "MediaWiki" && mw.config.get( "wgArticleId" ) === 0 ) {
			importScript( "MediaWiki:Creation.js" );
		}
		if ( mw.config.get( "wgPageName" ) === "Special:Version" ) {
			importScript( "MediaWiki:SpecialVersion.js" );
		}
	}
	mw.hook( "wikipage.content" ).add( conditionallyImport );

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Function that "fixes" redlink categories in command and function pages
	 * Maintainer: BIKI User:Fred Gandt
	 */

	function preloadRedlinkedCategories() {
		var cd = document.getElementsByClassName( "_description" )[0];
		if ( cd ) {
			if ( cd.firstChild.getAttribute( "class" ) == "gvi" ) {
				var cl = document.getElementById( "catlinks" ).getElementsByTagName( "a" );
				for ( var l in cl ) {
					if ( typeof cl[l] == "object" ) {
						if ( cl[l].getAttribute("class") == "new" && cl[l].textContent.indexOf( "Introduced with " ) === 0 ) {
							cl[l].setAttribute( "href", cl[l].getAttribute( "href" ) + "&preload=Template:Preload/IntroductionCategory" );
							// todo: possible automatic creation and save of new category?
						}
					}
				}
			}
		}
	}
	mw.hook( "wikipage.content" ).add( preloadRedlinkedCategories );

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Function that adds a Purge button
	 * Maintainer: [[User:Lou Montana]]
	 */

	function offerPurgeButton() {
		var protectButton = document.getElementById("ca-protect");
		if (protectButton == null) {
			protectButton = document.getElementById("ca-unprotect");
			if (protectButton == null) {
				return; // quick'n'not that dirty
			}
		}
		var newButton = protectButton.cloneNode(true),
			link = newButton.getElementsByTagName("a")[0];
		link.removeAttribute("accesskey");
		link.setAttribute("title", "Purge the page's cache");
		link.setAttribute("href", document.location.href + (document.location.href.indexOf("?") === -1 ? "?action=purge" : "&action=purge"));
		link.innerHTML = "Purge";
		protectButton.parentNode.appendChild(newButton);
	}
	offerPurgeButton();

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Disable Talk pages
	 * Maintainer: [[User:Lou Montana]]
	 */

	function disableTalkPages() {

		if (mw.config.get("wgNamespaceNumber") == 1) { // Talk - User Talk allowed

			document.getElementById("ca-edit").remove();
			document.getElementById("ca-addsection").remove();
		}

		var talkButton = document.getElementById("ca-talk");
		if ($(talkButton).hasClass("new")) {
			talkButton.remove();
		}
	}
	disableTalkPages();

	/*****************************************************************************************/

	/*****************************************************************************************
	 * Next ***
	 */

		// code code code

	/*****************************************************************************************/

	/*****************************************************************************************/

} ); /* END mw.loader WRAPPER */