X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/resources/src/jquery/jquery.suggestions.js

diff --git a/resources/src/jquery/jquery.suggestions.js b/resources/src/jquery/jquery.suggestions.js
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+++ b/resources/src/jquery/jquery.suggestions.js
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+/**
+ * This plugin provides a generic way to add suggestions to a text box.
+ *
+ * Set options:
+ *
+ *		$( '#textbox' ).suggestions( { option1: value1, option2: value2 } );
+ *		$( '#textbox' ).suggestions( option, value );
+ *
+ * Get option:
+ *
+ *		value = $( '#textbox' ).suggestions( option );
+ *
+ * Initialize:
+ *
+ *		$( '#textbox' ).suggestions();
+ *
+ * Uses jQuery.suggestions singleton internally.
+ *
+ * @class jQuery.plugin.suggestions
+ */
+
+/**
+ * @method suggestions
+ * @chainable
+ * @return {jQuery}
+ *
+ * @param {Object} options
+ *
+ * @param {Function} [options.fetch] Callback that should fetch suggestions and set the suggestions
+ *  property. Called in context of the text box.
+ * @param {string} options.fetch.query
+ * @param {Function} options.fetch.response Callback to receive the suggestions with
+ * @param {Array} options.fetch.response.suggestions
+ * @param {number} options.fetch.maxRows
+ *
+ * @param {Function} [options.cancel] Callback function to call when any pending asynchronous
+ *  suggestions fetches. Called in context of the text box.
+ *
+ * @param {Object} [options.special] Set of callbacks for rendering and selecting.
+ *
+ * @param {Function} options.special.render Called in context of the suggestions-special element.
+ * @param {string} options.special.render.query
+ * @param {Object} options.special.render.context
+ *
+ * @param {Function} options.special.select Called in context of the suggestions-result-current element.
+ * @param {jQuery} options.special.select.$textbox
+ *
+ * @param {Object} [options.result] Set of callbacks for rendering and selecting
+ *
+ * @param {Function} options.result.render Called in context of the suggestions-result element.
+ * @param {string} options.result.render.suggestion
+ * @param {Object} options.result.render.context
+ *
+ * @param {Function} options.result.select Called in context of the suggestions-result-current element.
+ * @param {jQuery} options.result.select.$textbox
+ *
+ * @param {Object} [options.update] Set of callbacks for listening to a change in the text input.
+ *
+ * @param {Function} options.update.before Called right after the user changes the textbox text.
+ * @param {Function} options.update.after Called after results are updated either from the cache or
+ * the API as a result of the user input.
+ *
+ * @param {jQuery} [options.$region=this] The element to place the suggestions below and match width of.
+ *
+ * @param {string[]} [options.suggestions] Array of suggestions to display.
+ *
+ * @param {number} [options.maxRows=10] Maximum number of suggestions to display at one time.
+ *  Must be between 1 and 100.
+ *
+ * @param {number} [options.delay=120] Number of milliseconds to wait for the user to stop typing.
+ *  Must be between 0 and 1200.
+ *
+ * @param {boolean} [options.cache=false] Whether to cache results from a fetch.
+ *
+ * @param {number} [options.cacheMaxAge=60000] Number of milliseconds to cache results from a fetch.
+ *  Must be higher than 1. Defaults to 1 minute.
+ *
+ * @param {boolean} [options.submitOnClick=false] Whether to submit the form containing the textbox
+ *  when a suggestion is clicked.
+ *
+ * @param {number} [options.maxExpandFactor=3] Maximum suggestions box width relative to the textbox
+ *  width. If set to e.g. 2, the suggestions box will never be grown beyond 2 times the width of
+ *  the textbox. Must be higher than 1.
+ *
+ * @param {string} [options.expandFrom=auto] Which direction to offset the suggestion box from.
+ *  Values 'start' and 'end' translate to left and right respectively depending on the directionality
+ *   of the current document, according to `$( 'html' ).css( 'direction' )`.
+ *   Valid values: "left", "right", "start", "end", and "auto".
+ *
+ * @param {boolean} [options.positionFromLeft] Sets `expandFrom=left`, for backwards
+ *  compatibility.
+ *
+ * @param {boolean} [options.highlightInput=false] Whether to highlight matched portions of the
+ *  input or not.
+ */
+
+( function ( $, mw ) {
+
+	var hasOwn = Object.hasOwnProperty;
+
+	/**
+	 * Used by jQuery.plugin.suggestions.
+	 *
+	 * @class jQuery.suggestions
+	 * @singleton
+	 * @private
+	 */
+	$.suggestions = {
+		/**
+		 * Cancel any delayed maybeFetch() call and callback the context so
+		 * they can cancel any async fetching if they use AJAX or something.
+		 *
+		 * @param {Object} context
+		 */
+		cancel: function ( context ) {
+			if ( context.data.timerID !== null ) {
+				clearTimeout( context.data.timerID );
+			}
+			if ( $.isFunction( context.config.cancel ) ) {
+				context.config.cancel.call( context.data.$textbox );
+			}
+		},
+
+		/**
+		 * Hide the element with suggestions and clean up some state.
+		 *
+		 * @param {Object} context
+		 */
+		hide: function ( context ) {
+			// Remove any highlights, including on "special" items
+			context.data.$container.find( '.suggestions-result-current' ).removeClass( 'suggestions-result-current' );
+			// Hide the container
+			context.data.$container.hide();
+		},
+
+		/**
+		 * Restore the text the user originally typed in the textbox, before it
+		 * was overwritten by highlight(). This restores the value the currently
+		 * displayed suggestions are based on, rather than the value just before
+		 * highlight() overwrote it; the former is arguably slightly more sensible.
+		 *
+		 * @param {Object} context
+		 */
+		restore: function ( context ) {
+			context.data.$textbox.val( context.data.prevText );
+		},
+
+		/**
+		 * Ask the user-specified callback for new suggestions. Any previous delayed
+		 * call to this function still pending will be canceled. If the value in the
+		 * textbox is empty or hasn't changed since the last time suggestions were fetched,
+		 * this function does nothing.
+		 *
+		 * @param {Object} context
+		 * @param {boolean} delayed Whether or not to delay this by the currently configured amount of time
+		 */
+		update: function ( context, delayed ) {
+			function maybeFetch() {
+				var val = context.data.$textbox.val(),
+					cache = context.data.cache,
+					cacheHit;
+
+				if ( typeof context.config.update.before === 'function' ) {
+					context.config.update.before.call( context.data.$textbox );
+				}
+
+				// Only fetch if the value in the textbox changed and is not empty, or if the results were hidden
+				// if the textbox is empty then clear the result div, but leave other settings intouched
+				if ( val.length === 0 ) {
+					$.suggestions.hide( context );
+					context.data.prevText = '';
+				} else if (
+					val !== context.data.prevText ||
+					!context.data.$container.is( ':visible' )
+				) {
+					context.data.prevText = val;
+					// Try cache first
+					if ( context.config.cache && hasOwn.call( cache, val ) ) {
+						if ( mw.now() - cache[ val ].timestamp < context.config.cacheMaxAge ) {
+							context.data.$textbox.suggestions( 'suggestions', cache[ val ].suggestions );
+							if ( typeof context.config.update.after === 'function' ) {
+								context.config.update.after.call( context.data.$textbox, cache[ val ].metadata );
+							}
+							cacheHit = true;
+						} else {
+							// Cache expired
+							delete cache[ val ];
+						}
+					}
+					if ( !cacheHit && typeof context.config.fetch === 'function' ) {
+						context.config.fetch.call(
+							context.data.$textbox,
+							val,
+							function ( suggestions, metadata ) {
+								suggestions = suggestions.slice( 0, context.config.maxRows );
+								context.data.$textbox.suggestions( 'suggestions', suggestions );
+								if ( typeof context.config.update.after === 'function' ) {
+									context.config.update.after.call( context.data.$textbox, metadata );
+								}
+								if ( context.config.cache ) {
+									cache[ val ] = {
+										suggestions: suggestions,
+										metadata: metadata,
+										timestamp: mw.now()
+									};
+								}
+							},
+							context.config.maxRows
+						);
+					}
+				}
+
+				// Always update special rendering
+				$.suggestions.special( context );
+			}
+
+			// Cancels any delayed maybeFetch call, and invokes context.config.cancel.
+			$.suggestions.cancel( context );
+
+			if ( delayed ) {
+				// To avoid many started/aborted requests while typing, we're gonna take a short
+				// break before trying to fetch data.
+				context.data.timerID = setTimeout( maybeFetch, context.config.delay );
+			} else {
+				maybeFetch();
+			}
+		},
+
+		/**
+		 * @param {Object} context
+		*/
+		special: function ( context ) {
+			// Allow custom rendering - but otherwise don't do any rendering
+			if ( typeof context.config.special.render === 'function' ) {
+				// Wait for the browser to update the value
+				setTimeout( function () {
+					// Render special
+					var $special = context.data.$container.find( '.suggestions-special' );
+					context.config.special.render.call( $special, context.data.$textbox.val(), context );
+				}, 1 );
+			}
+		},
+
+		/**
+		 * Sets the value of a property, and updates the widget accordingly
+		 *
+		 * @param {Object} context
+		 * @param {string} property Name of property
+		 * @param {Mixed} value Value to set property with
+		 */
+		configure: function ( context, property, value ) {
+			var newCSS,
+				$result, $results, $spanForWidth, childrenWidth,
+				i, expWidth, maxWidth, text;
+
+			// Validate creation using fallback values
+			switch ( property ) {
+				case 'fetch':
+				case 'cancel':
+				case 'special':
+				case 'result':
+				case 'update':
+				case '$region':
+				case 'expandFrom':
+					context.config[ property ] = value;
+					break;
+				case 'suggestions':
+					context.config[ property ] = value;
+					// Update suggestions
+					if ( context.data !== undefined ) {
+						if ( context.data.$textbox.val().length === 0 ) {
+							// Hide the div when no suggestion exist
+							$.suggestions.hide( context );
+						} else {
+							// Rebuild the suggestions list
+							context.data.$container.show();
+							// Update the size and position of the list
+							newCSS = {
+								top: context.config.$region.offset().top + context.config.$region.outerHeight(),
+								bottom: 'auto',
+								width: context.config.$region.outerWidth(),
+								height: 'auto'
+							};
+
+							// Process expandFrom, after this it is set to left or right.
+							context.config.expandFrom = ( function ( expandFrom ) {
+								var regionWidth, docWidth, regionCenter, docCenter,
+									docDir = $( document.documentElement ).css( 'direction' ),
+									$region = context.config.$region;
+
+								// Backwards compatible
+								if ( context.config.positionFromLeft ) {
+									expandFrom = 'left';
+
+								// Catch invalid values, default to 'auto'
+								} else if ( $.inArray( expandFrom, [ 'left', 'right', 'start', 'end', 'auto' ] ) === -1 ) {
+									expandFrom = 'auto';
+								}
+
+								if ( expandFrom === 'auto' ) {
+									if ( $region.data( 'searchsuggest-expand-dir' ) ) {
+										// If the markup explicitly contains a direction, use it.
+										expandFrom = $region.data( 'searchsuggest-expand-dir' );
+									} else {
+										regionWidth = $region.outerWidth();
+										docWidth = $( document ).width();
+										if ( regionWidth > ( 0.85 * docWidth ) ) {
+											// If the input size takes up more than 85% of the document horizontally
+											// expand the suggestions to the writing direction's native end.
+											expandFrom = 'start';
+										} else {
+											// Calculate the center points of the input and document
+											regionCenter = $region.offset().left + regionWidth / 2;
+											docCenter = docWidth / 2;
+											if ( Math.abs( regionCenter - docCenter ) < ( 0.10 * docCenter ) ) {
+												// If the input's center is within 10% of the document center
+												// use the writing direction's native end.
+												expandFrom = 'start';
+											} else {
+												// Otherwise expand the input from the closest side of the page,
+												// towards the side of the page with the most free open space
+												expandFrom = regionCenter > docCenter ? 'right' : 'left';
+											}
+										}
+									}
+								}
+
+								if ( expandFrom === 'start' ) {
+									expandFrom = docDir === 'rtl' ? 'right' : 'left';
+
+								} else if ( expandFrom === 'end' ) {
+									expandFrom = docDir === 'rtl' ? 'left' : 'right';
+								}
+
+								return expandFrom;
+
+							}( context.config.expandFrom ) );
+
+							if ( context.config.expandFrom === 'left' ) {
+								// Expand from left
+								newCSS.left = context.config.$region.offset().left;
+								newCSS.right = 'auto';
+							} else {
+								// Expand from right
+								newCSS.left = 'auto';
+								newCSS.right = $( 'body' ).width() - ( context.config.$region.offset().left + context.config.$region.outerWidth() );
+							}
+
+							context.data.$container.css( newCSS );
+							$results = context.data.$container.children( '.suggestions-results' );
+							$results.empty();
+							expWidth = -1;
+							for ( i = 0; i < context.config.suggestions.length; i++ ) {
+								text = context.config.suggestions[ i ];
+								$result = $( '<div>' )
+									.addClass( 'suggestions-result' )
+									.attr( 'rel', i )
+									.data( 'text', context.config.suggestions[ i ] )
+									.mousemove( function () {
+										context.data.selectedWithMouse = true;
+										$.suggestions.highlight(
+											context,
+											$( this ).closest( '.suggestions-results .suggestions-result' ),
+											false
+										);
+									} )
+									.appendTo( $results );
+								// Allow custom rendering
+								if ( typeof context.config.result.render === 'function' ) {
+									context.config.result.render.call( $result, context.config.suggestions[ i ], context );
+								} else {
+									$result.text( text );
+								}
+
+								if ( context.config.highlightInput ) {
+									$result.highlightText( context.data.prevText, { method: 'prefixHighlight' } );
+								}
+
+								// Widen results box if needed (new width is only calculated here, applied later).
+
+								// The monstrosity below accomplishes two things:
+								// * Wraps the text contents in a DOM element, so that we can know its width. There is
+								//   no way to directly access the width of a text node, and we can't use the parent
+								//   node width as it has text-overflow: ellipsis; and overflow: hidden; applied to
+								//   it, which trims it to a smaller width.
+								// * Temporarily applies position: absolute; to the wrapper to pull it out of normal
+								//   document flow. Otherwise the CSS text-overflow: ellipsis; and overflow: hidden;
+								//   rules would cause some browsers (at least all versions of IE from 6 to 11) to
+								//   still report the "trimmed" width. This should not be done in regular CSS
+								//   stylesheets as we don't want this rule to apply to other <span> elements, like
+								//   the ones generated by jquery.highlightText.
+								$spanForWidth = $result.wrapInner( '<span>' ).children();
+								childrenWidth = $spanForWidth.css( 'position', 'absolute' ).outerWidth();
+								$spanForWidth.contents().unwrap();
+
+								if ( childrenWidth > $result.width() && childrenWidth > expWidth ) {
+									// factor in any padding, margin, or border space on the parent
+									expWidth = childrenWidth + ( context.data.$container.width() - $result.width() );
+								}
+							}
+
+							// Apply new width for results box, if any
+							if ( expWidth > context.data.$container.width() ) {
+								maxWidth = context.config.maxExpandFactor * context.data.$textbox.width();
+								context.data.$container.width( Math.min( expWidth, maxWidth ) );
+							}
+						}
+					}
+					break;
+				case 'maxRows':
+					context.config[ property ] = Math.max( 1, Math.min( 100, value ) );
+					break;
+				case 'delay':
+					context.config[ property ] = Math.max( 0, Math.min( 1200, value ) );
+					break;
+				case 'cacheMaxAge':
+					context.config[ property ] = Math.max( 1, value );
+					break;
+				case 'maxExpandFactor':
+					context.config[ property ] = Math.max( 1, value );
+					break;
+				case 'cache':
+				case 'submitOnClick':
+				case 'positionFromLeft':
+				case 'highlightInput':
+					context.config[ property ] = !!value;
+					break;
+			}
+		},
+
+		/**
+		 * Highlight a result in the results table
+		 *
+		 * @param {Object} context
+		 * @param {jQuery|string} result `<tr>` to highlight, or 'prev' or 'next'
+		 * @param {boolean} updateTextbox If true, put the suggestion in the textbox
+		 */
+		highlight: function ( context, result, updateTextbox ) {
+			var selected = context.data.$container.find( '.suggestions-result-current' );
+			if ( !result.get || selected.get( 0 ) !== result.get( 0 ) ) {
+				if ( result === 'prev' ) {
+					if ( selected.hasClass( 'suggestions-special' ) ) {
+						result = context.data.$container.find( '.suggestions-result:last' );
+					} else {
+						result = selected.prev();
+						if ( !( result.length && result.hasClass( 'suggestions-result' ) ) ) {
+							// there is something in the DOM between selected element and the wrapper, bypass it
+							result = selected.parents( '.suggestions-results > *' ).prev().find( '.suggestions-result' ).eq( 0 );
+						}
+
+						if ( selected.length === 0 ) {
+							// we are at the beginning, so lets jump to the last item
+							if ( context.data.$container.find( '.suggestions-special' ).html() !== '' ) {
+								result = context.data.$container.find( '.suggestions-special' );
+							} else {
+								result = context.data.$container.find( '.suggestions-results .suggestions-result:last' );
+							}
+						}
+					}
+				} else if ( result === 'next' ) {
+					if ( selected.length === 0 ) {
+						// No item selected, go to the first one
+						result = context.data.$container.find( '.suggestions-results .suggestions-result:first' );
+						if ( result.length === 0 && context.data.$container.find( '.suggestions-special' ).html() !== '' ) {
+							// No suggestion exists, go to the special one directly
+							result = context.data.$container.find( '.suggestions-special' );
+						}
+					} else {
+						result = selected.next();
+						if ( !( result.length && result.hasClass( 'suggestions-result' ) ) ) {
+							// there is something in the DOM between selected element and the wrapper, bypass it
+							result = selected.parents( '.suggestions-results > *' ).next().find( '.suggestions-result' ).eq( 0 );
+						}
+
+						if ( selected.hasClass( 'suggestions-special' ) ) {
+							result = $( [] );
+						} else if (
+							result.length === 0 &&
+							context.data.$container.find( '.suggestions-special' ).html() !== ''
+						) {
+							// We were at the last item, jump to the specials!
+							result = context.data.$container.find( '.suggestions-special' );
+						}
+					}
+				}
+				selected.removeClass( 'suggestions-result-current' );
+				result.addClass( 'suggestions-result-current' );
+			}
+			if ( updateTextbox ) {
+				if ( result.length === 0 || result.is( '.suggestions-special' ) ) {
+					$.suggestions.restore( context );
+				} else {
+					context.data.$textbox.val( result.data( 'text' ) );
+					// .val() doesn't call any event handlers, so
+					// let the world know what happened
+					context.data.$textbox.change();
+				}
+				context.data.$textbox.trigger( 'change' );
+			}
+		},
+
+		/**
+		 * Respond to keypress event
+		 *
+		 * @param {jQuery.Event} e
+		 * @param {Object} context
+		 * @param {number} key Code of key pressed
+		 */
+		keypress: function ( e, context, key ) {
+			var selected,
+				wasVisible = context.data.$container.is( ':visible' ),
+				preventDefault = false;
+
+			switch ( key ) {
+				// Arrow down
+				case 40:
+					if ( wasVisible ) {
+						$.suggestions.highlight( context, 'next', true );
+						context.data.selectedWithMouse = false;
+					} else {
+						$.suggestions.update( context, false );
+					}
+					preventDefault = true;
+					break;
+				// Arrow up
+				case 38:
+					if ( wasVisible ) {
+						$.suggestions.highlight( context, 'prev', true );
+						context.data.selectedWithMouse = false;
+					}
+					preventDefault = wasVisible;
+					break;
+				// Escape
+				case 27:
+					$.suggestions.hide( context );
+					$.suggestions.restore( context );
+					$.suggestions.cancel( context );
+					context.data.$textbox.trigger( 'change' );
+					preventDefault = wasVisible;
+					break;
+				// Enter
+				case 13:
+					preventDefault = wasVisible;
+					selected = context.data.$container.find( '.suggestions-result-current' );
+					$.suggestions.hide( context );
+					if ( selected.length === 0 || context.data.selectedWithMouse ) {
+						// If nothing is selected or if something was selected with the mouse
+						// cancel any current requests and allow the form to be submitted
+						// (simply don't prevent default behavior).
+						$.suggestions.cancel( context );
+						preventDefault = false;
+					} else if ( selected.is( '.suggestions-special' ) ) {
+						if ( typeof context.config.special.select === 'function' ) {
+							// Allow the callback to decide whether to prevent default or not
+							if ( context.config.special.select.call( selected, context.data.$textbox, 'keyboard' ) === true ) {
+								preventDefault = false;
+							}
+						}
+					} else {
+						if ( typeof context.config.result.select === 'function' ) {
+							// Allow the callback to decide whether to prevent default or not
+							if ( context.config.result.select.call( selected, context.data.$textbox, 'keyboard' ) === true ) {
+								preventDefault = false;
+							}
+						}
+					}
+					break;
+				default:
+					$.suggestions.update( context, true );
+					break;
+			}
+			if ( preventDefault ) {
+				e.preventDefault();
+				e.stopPropagation();
+			}
+		}
+	};
+
+	// See file header for method documentation
+	$.fn.suggestions = function () {
+
+		// Multi-context fields
+		var returnValue,
+			args = arguments;
+
+		$( this ).each( function () {
+			var context, key;
+
+			/* Construction and Loading */
+
+			context = $( this ).data( 'suggestions-context' );
+			if ( context === undefined || context === null ) {
+				context = {
+					config: {
+						fetch: function () {},
+						cancel: function () {},
+						special: {},
+						result: {},
+						update: {},
+						$region: $( this ),
+						suggestions: [],
+						maxRows: 10,
+						delay: 120,
+						cache: false,
+						cacheMaxAge: 60000,
+						submitOnClick: false,
+						maxExpandFactor: 3,
+						expandFrom: 'auto',
+						highlightInput: false
+					}
+				};
+			}
+
+			/* API */
+
+			// Handle various calling styles
+			if ( args.length > 0 ) {
+				if ( typeof args[ 0 ] === 'object' ) {
+					// Apply set of properties
+					for ( key in args[ 0 ] ) {
+						$.suggestions.configure( context, key, args[ 0 ][ key ] );
+					}
+				} else if ( typeof args[ 0 ] === 'string' ) {
+					if ( args.length > 1 ) {
+						// Set property values
+						$.suggestions.configure( context, args[ 0 ], args[ 1 ] );
+					} else if ( returnValue === null || returnValue === undefined ) {
+						// Get property values, but don't give access to internal data - returns only the first
+						returnValue = ( args[ 0 ] in context.config ? undefined : context.config[ args[ 0 ] ] );
+					}
+				}
+			}
+
+			/* Initialization */
+
+			if ( context.data === undefined ) {
+				context.data = {
+					// ID of running timer
+					timerID: null,
+
+					// Text in textbox when suggestions were last fetched
+					prevText: null,
+
+					// Cache of fetched suggestions
+					cache: {},
+
+					// Number of results visible without scrolling
+					visibleResults: 0,
+
+					// Suggestion the last mousedown event occurred on
+					mouseDownOn: $( [] ),
+					$textbox: $( this ),
+					selectedWithMouse: false
+				};
+
+				context.data.$container = $( '<div>' )
+					.css( 'display', 'none' )
+					.addClass( 'suggestions' )
+					.append(
+						$( '<div>' ).addClass( 'suggestions-results' )
+							// Can't use click() because the container div is hidden when the
+							// textbox loses focus. Instead, listen for a mousedown followed
+							// by a mouseup on the same div.
+							.mousedown( function ( e ) {
+								context.data.mouseDownOn = $( e.target ).closest( '.suggestions-results .suggestions-result' );
+							} )
+							.mouseup( function ( e ) {
+								var $result = $( e.target ).closest( '.suggestions-results .suggestions-result' ),
+									$other = context.data.mouseDownOn;
+
+								context.data.mouseDownOn = $( [] );
+								if ( $result.get( 0 ) !== $other.get( 0 ) ) {
+									return;
+								}
+								$.suggestions.highlight( context, $result, true );
+								if ( typeof context.config.result.select === 'function' ) {
+									context.config.result.select.call( $result, context.data.$textbox, 'mouse' );
+								}
+								// Don't interfere with special clicks (e.g. to open in new tab)
+								if ( !( e.which !== 1 || e.altKey || e.ctrlKey || e.shiftKey || e.metaKey ) ) {
+									// This will hide the link we're just clicking on, which causes problems
+									// when done synchronously in at least Firefox 3.6 (T64858).
+									setTimeout( function () {
+										$.suggestions.hide( context );
+									}, 0 );
+								}
+								// Always bring focus to the textbox, as that's probably where the user expects it
+								// if they were just typing.
+								context.data.$textbox.focus();
+							} )
+					)
+					.append(
+						$( '<div>' ).addClass( 'suggestions-special' )
+							// Can't use click() because the container div is hidden when the
+							// textbox loses focus. Instead, listen for a mousedown followed
+							// by a mouseup on the same div.
+							.mousedown( function ( e ) {
+								context.data.mouseDownOn = $( e.target ).closest( '.suggestions-special' );
+							} )
+							.mouseup( function ( e ) {
+								var $special = $( e.target ).closest( '.suggestions-special' ),
+									$other = context.data.mouseDownOn;
+
+								context.data.mouseDownOn = $( [] );
+								if ( $special.get( 0 ) !== $other.get( 0 ) ) {
+									return;
+								}
+								if ( typeof context.config.special.select === 'function' ) {
+									context.config.special.select.call( $special, context.data.$textbox, 'mouse' );
+								}
+								// Don't interfere with special clicks (e.g. to open in new tab)
+								if ( !( e.which !== 1 || e.altKey || e.ctrlKey || e.shiftKey || e.metaKey ) ) {
+									// This will hide the link we're just clicking on, which causes problems
+									// when done synchronously in at least Firefox 3.6 (T64858).
+									setTimeout( function () {
+										$.suggestions.hide( context );
+									}, 0 );
+								}
+								// Always bring focus to the textbox, as that's probably where the user expects it
+								// if they were just typing.
+								context.data.$textbox.focus();
+							} )
+							.mousemove( function ( e ) {
+								context.data.selectedWithMouse = true;
+								$.suggestions.highlight(
+									context, $( e.target ).closest( '.suggestions-special' ), false
+								);
+							} )
+					)
+					.appendTo( $( 'body' ) );
+
+				$( this )
+					// Stop browser autocomplete from interfering
+					.attr( 'autocomplete', 'off' )
+					.keydown( function ( e ) {
+						// Store key pressed to handle later
+						context.data.keypressed = e.which;
+						context.data.keypressedCount = 0;
+					} )
+					.keypress( function ( e ) {
+						context.data.keypressedCount++;
+						$.suggestions.keypress( e, context, context.data.keypressed );
+					} )
+					.keyup( function ( e ) {
+						// The keypress event is fired when a key is pressed down and that key normally
+						// produces a character value. We also want to handle some keys that don't
+						// produce a character value so we also attach to the keydown/keyup events.
+						// List of codes sourced from
+						// https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode
+						var allowed = [
+							40, // up arrow
+							38, // down arrow
+							27, // escape
+							13, // enter
+							46, // delete
+							8 //   backspace
+						];
+						if ( context.data.keypressedCount === 0 &&
+							e.which === context.data.keypressed &&
+							$.inArray( e.which, allowed ) !== -1
+						) {
+							$.suggestions.keypress( e, context, context.data.keypressed );
+						}
+					} )
+					.blur( function () {
+						// When losing focus because of a mousedown
+						// on a suggestion, don't hide the suggestions
+						if ( context.data.mouseDownOn.length > 0 ) {
+							return;
+						}
+						$.suggestions.hide( context );
+						$.suggestions.cancel( context );
+					} );
+			}
+
+			// Store the context for next time
+			$( this ).data( 'suggestions-context', context );
+		} );
+		return returnValue !== undefined ? returnValue : $( this );
+	};
+
+	/**
+	 * @class jQuery
+	 * @mixins jQuery.plugin.suggestions
+	 */
+
+}( jQuery, mediaWiki ) );