User:Sunrise/Scripts/AjaxInlineDiffs.js

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/**
 * A script that combines the Ajax watchlist
 * User:Theopolisme/Scripts/ajaxWatchlist.js
 * with the inline diff link script
 * User:Writ Keeper/Scripts/commonHistory.js
 * by Theopolisme and Writ Keeper respectively.
 */ 
( function ( $, mw ) {
	"use strict";
 
	function updateWatchlist () {
		var $loadingIndicator = $( '.watchlistLoadingIndicator' ),
			$content = $( '#mw-content-text' ),
			$ajaxWatchlist = $( '#ajaxWatchlist' );
 
		// If this is the first time we run the script, wrap everything
		// after and including the watchlist form in a div with the id
		// "ajaxWatchlist".
		if ( $ajaxWatchlist.length === 0 ) {
			$content.find( '#mw-watchlist-form' ).nextAll().addBack().wrapAll( '<div id="ajaxWatchlist"></div>' );
			$ajaxWatchlist = $( '#ajaxWatchlist' );
		}
 
		// Create a new loading indicator if it doesn't already
		// exist. If it already exists, just show it.
		if ( $loadingIndicator.length === 0 ) {
			$loadingIndicator = $( '<span>' )
				.appendTo( '.firstHeading' )
				.addClass( 'watchlistLoadingIndicator' )
				.append(
					$.createSpinner( {
						size: 'medium',
						type: 'inline'
					} ),
					' Updating watchlist...'
				);
		} else {
			$loadingIndicator.show();
		}
 
		// Make the ajax request to actually update the watchlist
		$.ajax( {
			url: location.href,
			dataType: 'html',
			success: function ( data ) {
				// If the watchlist contents have changed, update the page
				// to display the new contents.
				var $newContent = $( data ).find( '#mw-content-text #mw-watchlist-form' ).nextAll().addBack(); // Same selector as $ajaxWatchlist
				if ( $ajaxWatchlist.text() !== $newContent.text() ) {
					$ajaxWatchlist.empty().append( $newContent );
					mw.hook( 'wikipage.content' ).fire( $ajaxWatchlist ); // So scripts will run on the updated content
				}
				$loadingIndicator.hide();
			},
			error: function () {
				// Hide the indicator and then display an error notification
				$loadingIndicator.hide();
				mw.notify( 'ajaxWatchlist: Unable to automatically update watchlist.' );
			},
			complete: function () {
				// Each time the Ajax request runs, load commonHistory.js
				mw.loader.load('//en.wikipedia.org/w/index.php?title=User%3AWrit%A0Keeper%2FScripts%2FcommonHistory.js&action=raw&ctype=text/javascript');
			}
		} );
	}
 
	if ( mw.config.get( 'wgCanonicalSpecialPageName' ) === 'Watchlist' ) {
		// Add custom css for the loading indicator
		mw.util.addCSS( '.watchlistLoadingIndicator { float: right; font-size: 12px; } ' );
		// Run updateWatchlist() every 20 seconds by default (can be configured via window.watchlistUpdateFrequency)
		mw.loader.using( [ 'jquery.spinner' ], function () {
			setInterval( updateWatchlist, window.watchlistUpdateFrequency || 20000 );
		} );
	}
}( jQuery, mediaWiki ) );