content/development-bundle/ui/jquery.ui.menu.js - james-site - Git at Google

 /*!
  * jQuery UI Menu 1.9.2
  * http://jqueryui.com
  *
  * Copyright 2012 jQuery Foundation and other contributors
  * Released under the MIT license.
  * http://jquery.org/license
  *
  * http://api.jqueryui.com/menu/
  *
  * Depends:
  *	jquery.ui.core.js
  *	jquery.ui.widget.js
  *	jquery.ui.position.js
  */
 (function( $, undefined ) {

 var mouseHandled = false;

 $.widget( "ui.menu", {
 	version: "1.9.2",
 	defaultElement: "<ul>",
 	delay: 300,
 	options: {
 		icons: {
 			submenu: "ui-icon-carat-1-e"
 		},
 		menus: "ul",
 		position: {
 			my: "left top",
 			at: "right top"
 		},
 		role: "menu",

 		// callbacks
 		blur: null,
 		focus: null,
 		select: null
 	},

 	_create: function() {
 		this.activeMenu = this.element;
 		this.element
 			.uniqueId()
 			.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
 			.toggleClass( "ui-menu-icons", !!this.element.find( ".ui-icon" ).length )
 			.attr({
 				role: this.options.role,
 				tabIndex: 0
 			})
 			// need to catch all clicks on disabled menu
 			// not possible through _on
 			.bind( "click" + this.eventNamespace, $.proxy(function( event ) {
 				if ( this.options.disabled ) {
 					event.preventDefault();
 				}
 			}, this ));

 		if ( this.options.disabled ) {
 			this.element
 				.addClass( "ui-state-disabled" )
 				.attr( "aria-disabled", "true" );
 		}

 		this._on({
 			// Prevent focus from sticking to links inside menu after clicking
 			// them (focus should always stay on UL during navigation).
 			"mousedown .ui-menu-item > a": function( event ) {
 				event.preventDefault();
 			},
 			"click .ui-state-disabled > a": function( event ) {
 				event.preventDefault();
 			},
 			"click .ui-menu-item:has(a)": function( event ) {
 				var target = $( event.target ).closest( ".ui-menu-item" );
 				if ( !mouseHandled && target.not( ".ui-state-disabled" ).length ) {
 					mouseHandled = true;

 					this.select( event );
 					// Open submenu on click
 					if ( target.has( ".ui-menu" ).length ) {
 						this.expand( event );
 					} else if ( !this.element.is( ":focus" ) ) {
 						// Redirect focus to the menu
 						this.element.trigger( "focus", [ true ] );

 						// If the active item is on the top level, let it stay active.
 						// Otherwise, blur the active item since it is no longer visible.
 						if ( this.active && this.active.parents( ".ui-menu" ).length === 1 ) {
 							clearTimeout( this.timer );
 						}
 					}
 				}
 			},
 			"mouseenter .ui-menu-item": function( event ) {
 				var target = $( event.currentTarget );
 				// Remove ui-state-active class from siblings of the newly focused menu item
 				// to avoid a jump caused by adjacent elements both having a class with a border
 				target.siblings().children( ".ui-state-active" ).removeClass( "ui-state-active" );
 				this.focus( event, target );
 			},
 			mouseleave: "collapseAll",
 			"mouseleave .ui-menu": "collapseAll",
 			focus: function( event, keepActiveItem ) {
 				// If there's already an active item, keep it active
 				// If not, activate the first item
 				var item = this.active || this.element.children( ".ui-menu-item" ).eq( 0 );

 				if ( !keepActiveItem ) {
 					this.focus( event, item );
 				}
 			},
 			blur: function( event ) {
 				this._delay(function() {
 					if ( !$.contains( this.element[0], this.document[0].activeElement ) ) {
 						this.collapseAll( event );
 					}
 				});
 			},
 			keydown: "_keydown"
 		});

 		this.refresh();

 		// Clicks outside of a menu collapse any open menus
 		this._on( this.document, {
 			click: function( event ) {
 				if ( !$( event.target ).closest( ".ui-menu" ).length ) {
 					this.collapseAll( event );
 				}

 				// Reset the mouseHandled flag
 				mouseHandled = false;
 			}
 		});
 	},

 	_destroy: function() {
 		// Destroy (sub)menus
 		this.element
 			.removeAttr( "aria-activedescendant" )
 			.find( ".ui-menu" ).andSelf()
 				.removeClass( "ui-menu ui-widget ui-widget-content ui-corner-all ui-menu-icons" )
 				.removeAttr( "role" )
 				.removeAttr( "tabIndex" )
 				.removeAttr( "aria-labelledby" )
 				.removeAttr( "aria-expanded" )
 				.removeAttr( "aria-hidden" )
 				.removeAttr( "aria-disabled" )
 				.removeUniqueId()
 				.show();

 		// Destroy menu items
 		this.element.find( ".ui-menu-item" )
 			.removeClass( "ui-menu-item" )
 			.removeAttr( "role" )
 			.removeAttr( "aria-disabled" )
 			.children( "a" )
 				.removeUniqueId()
 				.removeClass( "ui-corner-all ui-state-hover" )
 				.removeAttr( "tabIndex" )
 				.removeAttr( "role" )
 				.removeAttr( "aria-haspopup" )
 				.children().each( function() {
 					var elem = $( this );
 					if ( elem.data( "ui-menu-submenu-carat" ) ) {
 						elem.remove();
 					}
 				});

 		// Destroy menu dividers
 		this.element.find( ".ui-menu-divider" ).removeClass( "ui-menu-divider ui-widget-content" );
 	},

 	_keydown: function( event ) {
 		var match, prev, character, skip, regex,
 			preventDefault = true;

 		function escape( value ) {
 			return value.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" );
 		}

 		switch ( event.keyCode ) {
 		case $.ui.keyCode.PAGE_UP:
 			this.previousPage( event );
 			break;
 		case $.ui.keyCode.PAGE_DOWN:
 			this.nextPage( event );
 			break;
 		case $.ui.keyCode.HOME:
 			this._move( "first", "first", event );
 			break;
 		case $.ui.keyCode.END:
 			this._move( "last", "last", event );
 			break;
 		case $.ui.keyCode.UP:
 			this.previous( event );
 			break;
 		case $.ui.keyCode.DOWN:
 			this.next( event );
 			break;
 		case $.ui.keyCode.LEFT:
 			this.collapse( event );
 			break;
 		case $.ui.keyCode.RIGHT:
 			if ( this.active && !this.active.is( ".ui-state-disabled" ) ) {
 				this.expand( event );
 			}
 			break;
 		case $.ui.keyCode.ENTER:
 		case $.ui.keyCode.SPACE:
 			this._activate( event );
 			break;
 		case $.ui.keyCode.ESCAPE:
 			this.collapse( event );
 			break;
 		default:
 			preventDefault = false;
 			prev = this.previousFilter || "";
 			character = String.fromCharCode( event.keyCode );
 			skip = false;

 			clearTimeout( this.filterTimer );

 			if ( character === prev ) {
 				skip = true;
 			} else {
 				character = prev + character;
 			}

 			regex = new RegExp( "^" + escape( character ), "i" );
 			match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
 				return regex.test( $( this ).children( "a" ).text() );
 			});
 			match = skip && match.index( this.active.next() ) !== -1 ?
 				this.active.nextAll( ".ui-menu-item" ) :
 				match;

 			// If no matches on the current filter, reset to the last character pressed
 			// to move down the menu to the first item that starts with that character
 			if ( !match.length ) {
 				character = String.fromCharCode( event.keyCode );
 				regex = new RegExp( "^" + escape( character ), "i" );
 				match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
 					return regex.test( $( this ).children( "a" ).text() );
 				});
 			}

 			if ( match.length ) {
 				this.focus( event, match );
 				if ( match.length > 1 ) {
 					this.previousFilter = character;
 					this.filterTimer = this._delay(function() {
 						delete this.previousFilter;
 					}, 1000 );
 				} else {
 					delete this.previousFilter;
 				}
 			} else {
 				delete this.previousFilter;
 			}
 		}

 		if ( preventDefault ) {
 			event.preventDefault();
 		}
 	},

 	_activate: function( event ) {
 		if ( !this.active.is( ".ui-state-disabled" ) ) {
 			if ( this.active.children( "a[aria-haspopup='true']" ).length ) {
 				this.expand( event );
 			} else {
 				this.select( event );
 			}
 		}
 	},

 	refresh: function() {
 		var menus,
 			icon = this.options.icons.submenu,
 			submenus = this.element.find( this.options.menus );

 		// Initialize nested menus
 		submenus.filter( ":not(.ui-menu)" )
 			.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
 			.hide()
 			.attr({
 				role: this.options.role,
 				"aria-hidden": "true",
 				"aria-expanded": "false"
 			})
 			.each(function() {
 				var menu = $( this ),
 					item = menu.prev( "a" ),
 					submenuCarat = $( "<span>" )
 						.addClass( "ui-menu-icon ui-icon " + icon )
 						.data( "ui-menu-submenu-carat", true );

 				item
 					.attr( "aria-haspopup", "true" )
 					.prepend( submenuCarat );
 				menu.attr( "aria-labelledby", item.attr( "id" ) );
 			});

 		menus = submenus.add( this.element );

 		// Don't refresh list items that are already adapted
 		menus.children( ":not(.ui-menu-item):has(a)" )
 			.addClass( "ui-menu-item" )
 			.attr( "role", "presentation" )
 			.children( "a" )
 				.uniqueId()
 				.addClass( "ui-corner-all" )
 				.attr({
 					tabIndex: -1,
 					role: this._itemRole()
 				});

 		// Initialize unlinked menu-items containing spaces and/or dashes only as dividers
 		menus.children( ":not(.ui-menu-item)" ).each(function() {
 			var item = $( this );
 			// hyphen, em dash, en dash
 			if ( !/[^\-—–\s]/.test( item.text() ) ) {
 				item.addClass( "ui-widget-content ui-menu-divider" );
 			}
 		});

 		// Add aria-disabled attribute to any disabled menu item
 		menus.children( ".ui-state-disabled" ).attr( "aria-disabled", "true" );

 		// If the active item has been removed, blur the menu
 		if ( this.active && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) {
 			this.blur();
 		}
 	},

 	_itemRole: function() {
 		return {
 			menu: "menuitem",
 			listbox: "option"
 		}[ this.options.role ];
 	},

 	focus: function( event, item ) {
 		var nested, focused;
 		this.blur( event, event && event.type === "focus" );

 		this._scrollIntoView( item );

 		this.active = item.first();
 		focused = this.active.children( "a" ).addClass( "ui-state-focus" );
 		// Only update aria-activedescendant if there's a role
 		// otherwise we assume focus is managed elsewhere
 		if ( this.options.role ) {
 			this.element.attr( "aria-activedescendant", focused.attr( "id" ) );
 		}

 		// Highlight active parent menu item, if any
 		this.active
 			.parent()
 			.closest( ".ui-menu-item" )
 			.children( "a:first" )
 			.addClass( "ui-state-active" );

 		if ( event && event.type === "keydown" ) {
 			this._close();
 		} else {
 			this.timer = this._delay(function() {
 				this._close();
 			}, this.delay );
 		}

 		nested = item.children( ".ui-menu" );
 		if ( nested.length && ( /^mouse/.test( event.type ) ) ) {
 			this._startOpening(nested);
 		}
 		this.activeMenu = item.parent();

 		this._trigger( "focus", event, { item: item } );
 	},

 	_scrollIntoView: function( item ) {
 		var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight;
 		if ( this._hasScroll() ) {
 			borderTop = parseFloat( $.css( this.activeMenu[0], "borderTopWidth" ) ) || 0;
 			paddingTop = parseFloat( $.css( this.activeMenu[0], "paddingTop" ) ) || 0;
 			offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop;
 			scroll = this.activeMenu.scrollTop();
 			elementHeight = this.activeMenu.height();
 			itemHeight = item.height();

 			if ( offset < 0 ) {
 				this.activeMenu.scrollTop( scroll + offset );
 			} else if ( offset + itemHeight > elementHeight ) {
 				this.activeMenu.scrollTop( scroll + offset - elementHeight + itemHeight );
 			}
 		}
 	},

 	blur: function( event, fromFocus ) {
 		if ( !fromFocus ) {
 			clearTimeout( this.timer );
 		}

 		if ( !this.active ) {
 			return;
 		}

 		this.active.children( "a" ).removeClass( "ui-state-focus" );
 		this.active = null;

 		this._trigger( "blur", event, { item: this.active } );
 	},

 	_startOpening: function( submenu ) {
 		clearTimeout( this.timer );

 		// Don't open if already open fixes a Firefox bug that caused a .5 pixel
 		// shift in the submenu position when mousing over the carat icon
 		if ( submenu.attr( "aria-hidden" ) !== "true" ) {
 			return;
 		}

 		this.timer = this._delay(function() {
 			this._close();
 			this._open( submenu );
 		}, this.delay );
 	},

 	_open: function( submenu ) {
 		var position = $.extend({
 			of: this.active
 		}, this.options.position );

 		clearTimeout( this.timer );
 		this.element.find( ".ui-menu" ).not( submenu.parents( ".ui-menu" ) )
 			.hide()
 			.attr( "aria-hidden", "true" );

 		submenu
 			.show()
 			.removeAttr( "aria-hidden" )
 			.attr( "aria-expanded", "true" )
 			.position( position );
 	},

 	collapseAll: function( event, all ) {
 		clearTimeout( this.timer );
 		this.timer = this._delay(function() {
 			// If we were passed an event, look for the submenu that contains the event
 			var currentMenu = all ? this.element :
 				$( event && event.target ).closest( this.element.find( ".ui-menu" ) );

 			// If we found no valid submenu ancestor, use the main menu to close all sub menus anyway
 			if ( !currentMenu.length ) {
 				currentMenu = this.element;
 			}

 			this._close( currentMenu );

 			this.blur( event );
 			this.activeMenu = currentMenu;
 		}, this.delay );
 	},

 	// With no arguments, closes the currently active menu - if nothing is active
 	// it closes all menus.  If passed an argument, it will search for menus BELOW
 	_close: function( startMenu ) {
 		if ( !startMenu ) {
 			startMenu = this.active ? this.active.parent() : this.element;
 		}

 		startMenu
 			.find( ".ui-menu" )
 				.hide()
 				.attr( "aria-hidden", "true" )
 				.attr( "aria-expanded", "false" )
 			.end()
 			.find( "a.ui-state-active" )
 				.removeClass( "ui-state-active" );
 	},

 	collapse: function( event ) {
 		var newItem = this.active &&
 			this.active.parent().closest( ".ui-menu-item", this.element );
 		if ( newItem && newItem.length ) {
 			this._close();
 			this.focus( event, newItem );
 		}
 	},

 	expand: function( event ) {
 		var newItem = this.active &&
 			this.active
 				.children( ".ui-menu " )
 				.children( ".ui-menu-item" )
 				.first();

 		if ( newItem && newItem.length ) {
 			this._open( newItem.parent() );

 			// Delay so Firefox will not hide activedescendant change in expanding submenu from AT
 			this._delay(function() {
 				this.focus( event, newItem );
 			});
 		}
 	},

 	next: function( event ) {
 		this._move( "next", "first", event );
 	},

 	previous: function( event ) {
 		this._move( "prev", "last", event );
 	},

 	isFirstItem: function() {
 		return this.active && !this.active.prevAll( ".ui-menu-item" ).length;
 	},

 	isLastItem: function() {
 		return this.active && !this.active.nextAll( ".ui-menu-item" ).length;
 	},

 	_move: function( direction, filter, event ) {
 		var next;
 		if ( this.active ) {
 			if ( direction === "first" || direction === "last" ) {
 				next = this.active
 					[ direction === "first" ? "prevAll" : "nextAll" ]( ".ui-menu-item" )
 					.eq( -1 );
 			} else {
 				next = this.active
 					[ direction + "All" ]( ".ui-menu-item" )
 					.eq( 0 );
 			}
 		}
 		if ( !next || !next.length || !this.active ) {
 			next = this.activeMenu.children( ".ui-menu-item" )[ filter ]();
 		}

 		this.focus( event, next );
 	},

 	nextPage: function( event ) {
 		var item, base, height;

 		if ( !this.active ) {
 			this.next( event );
 			return;
 		}
 		if ( this.isLastItem() ) {
 			return;
 		}
 		if ( this._hasScroll() ) {
 			base = this.active.offset().top;
 			height = this.element.height();
 			this.active.nextAll( ".ui-menu-item" ).each(function() {
 				item = $( this );
 				return item.offset().top - base - height < 0;
 			});

 			this.focus( event, item );
 		} else {
 			this.focus( event, this.activeMenu.children( ".ui-menu-item" )
 				[ !this.active ? "first" : "last" ]() );
 		}
 	},

 	previousPage: function( event ) {
 		var item, base, height;
 		if ( !this.active ) {
 			this.next( event );
 			return;
 		}
 		if ( this.isFirstItem() ) {
 			return;
 		}
 		if ( this._hasScroll() ) {
 			base = this.active.offset().top;
 			height = this.element.height();
 			this.active.prevAll( ".ui-menu-item" ).each(function() {
 				item = $( this );
 				return item.offset().top - base + height > 0;
 			});

 			this.focus( event, item );
 		} else {
 			this.focus( event, this.activeMenu.children( ".ui-menu-item" ).first() );
 		}
 	},

 	_hasScroll: function() {
 		return this.element.outerHeight() < this.element.prop( "scrollHeight" );
 	},

 	select: function( event ) {
 		// TODO: It should never be possible to not have an active item at this
 		// point, but the tests don't trigger mouseenter before click.
 		this.active = this.active || $( event.target ).closest( ".ui-menu-item" );
 		var ui = { item: this.active };
 		if ( !this.active.has( ".ui-menu" ).length ) {
 			this.collapseAll( event, true );
 		}
 		this._trigger( "select", event, ui );
 	}
 });

 }( jQuery ));
	/*!
	* jQuery UI Menu 1.9.2
	* http://jqueryui.com
	*
	* Copyright 2012 jQuery Foundation and other contributors
	* Released under the MIT license.
	* http://jquery.org/license
	*
	* http://api.jqueryui.com/menu/
	*
	* Depends:
	* jquery.ui.core.js
	* jquery.ui.widget.js
	* jquery.ui.position.js
	*/
	(function( $, undefined ) {

	var mouseHandled = false;

	$.widget( "ui.menu", {
	version: "1.9.2",
	defaultElement: "<ul>",
	delay: 300,
	options: {
	icons: {
	submenu: "ui-icon-carat-1-e"
	},
	menus: "ul",
	position: {
	my: "left top",
	at: "right top"
	},
	role: "menu",

	// callbacks
	blur: null,
	focus: null,
	select: null
	},

	_create: function() {
	this.activeMenu = this.element;
	this.element
	.uniqueId()
	.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
	.toggleClass( "ui-menu-icons", !!this.element.find( ".ui-icon" ).length )
	.attr({
	role: this.options.role,
	tabIndex: 0
	})
	// need to catch all clicks on disabled menu
	// not possible through _on
	.bind( "click" + this.eventNamespace, $.proxy(function( event ) {
	if ( this.options.disabled ) {
	event.preventDefault();
	}
	}, this ));

	if ( this.options.disabled ) {
	this.element
	.addClass( "ui-state-disabled" )
	.attr( "aria-disabled", "true" );
	}

	this._on({
	// Prevent focus from sticking to links inside menu after clicking
	// them (focus should always stay on UL during navigation).
	"mousedown .ui-menu-item > a": function( event ) {
	event.preventDefault();
	},
	"click .ui-state-disabled > a": function( event ) {
	event.preventDefault();
	},
	"click .ui-menu-item:has(a)": function( event ) {
	var target = $( event.target ).closest( ".ui-menu-item" );
	if ( !mouseHandled && target.not( ".ui-state-disabled" ).length ) {
	mouseHandled = true;

	this.select( event );
	// Open submenu on click
	if ( target.has( ".ui-menu" ).length ) {
	this.expand( event );
	} else if ( !this.element.is( ":focus" ) ) {
	// Redirect focus to the menu
	this.element.trigger( "focus", [ true ] );

	// If the active item is on the top level, let it stay active.
	// Otherwise, blur the active item since it is no longer visible.
	if ( this.active && this.active.parents( ".ui-menu" ).length === 1 ) {
	clearTimeout( this.timer );
	}
	}
	}
	},
	"mouseenter .ui-menu-item": function( event ) {
	var target = $( event.currentTarget );
	// Remove ui-state-active class from siblings of the newly focused menu item
	// to avoid a jump caused by adjacent elements both having a class with a border
	target.siblings().children( ".ui-state-active" ).removeClass( "ui-state-active" );
	this.focus( event, target );
	},
	mouseleave: "collapseAll",
	"mouseleave .ui-menu": "collapseAll",
	focus: function( event, keepActiveItem ) {
	// If there's already an active item, keep it active
	// If not, activate the first item
	var item = this.active \|\| this.element.children( ".ui-menu-item" ).eq( 0 );

	if ( !keepActiveItem ) {
	this.focus( event, item );
	}
	},
	blur: function( event ) {
	this._delay(function() {
	if ( !$.contains( this.element[0], this.document[0].activeElement ) ) {
	this.collapseAll( event );
	}
	});
	},
	keydown: "_keydown"
	});

	this.refresh();

	// Clicks outside of a menu collapse any open menus
	this._on( this.document, {
	click: function( event ) {
	if ( !$( event.target ).closest( ".ui-menu" ).length ) {
	this.collapseAll( event );
	}

	// Reset the mouseHandled flag
	mouseHandled = false;
	}
	});
	},

	_destroy: function() {
	// Destroy (sub)menus
	this.element
	.removeAttr( "aria-activedescendant" )
	.find( ".ui-menu" ).andSelf()
	.removeClass( "ui-menu ui-widget ui-widget-content ui-corner-all ui-menu-icons" )
	.removeAttr( "role" )
	.removeAttr( "tabIndex" )
	.removeAttr( "aria-labelledby" )
	.removeAttr( "aria-expanded" )
	.removeAttr( "aria-hidden" )
	.removeAttr( "aria-disabled" )
	.removeUniqueId()
	.show();

	// Destroy menu items
	this.element.find( ".ui-menu-item" )
	.removeClass( "ui-menu-item" )
	.removeAttr( "role" )
	.removeAttr( "aria-disabled" )
	.children( "a" )
	.removeUniqueId()
	.removeClass( "ui-corner-all ui-state-hover" )
	.removeAttr( "tabIndex" )
	.removeAttr( "role" )
	.removeAttr( "aria-haspopup" )
	.children().each( function() {
	var elem = $( this );
	if ( elem.data( "ui-menu-submenu-carat" ) ) {
	elem.remove();
	}
	});

	// Destroy menu dividers
	this.element.find( ".ui-menu-divider" ).removeClass( "ui-menu-divider ui-widget-content" );
	},

	_keydown: function( event ) {
	var match, prev, character, skip, regex,
	preventDefault = true;

	function escape( value ) {
	return value.replace( /[\-\[\]{}()*+?.,\\\^$\|#\s]/g, "\\$&" );
	}

	switch ( event.keyCode ) {
	case $.ui.keyCode.PAGE_UP:
	this.previousPage( event );
	break;
	case $.ui.keyCode.PAGE_DOWN:
	this.nextPage( event );
	break;
	case $.ui.keyCode.HOME:
	this._move( "first", "first", event );
	break;
	case $.ui.keyCode.END:
	this._move( "last", "last", event );
	break;
	case $.ui.keyCode.UP:
	this.previous( event );
	break;
	case $.ui.keyCode.DOWN:
	this.next( event );
	break;
	case $.ui.keyCode.LEFT:
	this.collapse( event );
	break;
	case $.ui.keyCode.RIGHT:
	if ( this.active && !this.active.is( ".ui-state-disabled" ) ) {
	this.expand( event );
	}
	break;
	case $.ui.keyCode.ENTER:
	case $.ui.keyCode.SPACE:
	this._activate( event );
	break;
	case $.ui.keyCode.ESCAPE:
	this.collapse( event );
	break;
	default:
	preventDefault = false;
	prev = this.previousFilter \|\| "";
	character = String.fromCharCode( event.keyCode );
	skip = false;

	clearTimeout( this.filterTimer );

	if ( character === prev ) {
	skip = true;
	} else {
	character = prev + character;
	}

	regex = new RegExp( "^" + escape( character ), "i" );
	match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
	return regex.test( $( this ).children( "a" ).text() );
	});
	match = skip && match.index( this.active.next() ) !== -1 ?
	this.active.nextAll( ".ui-menu-item" ) :
	match;

	// If no matches on the current filter, reset to the last character pressed
	// to move down the menu to the first item that starts with that character
	if ( !match.length ) {
	character = String.fromCharCode( event.keyCode );
	regex = new RegExp( "^" + escape( character ), "i" );
	match = this.activeMenu.children( ".ui-menu-item" ).filter(function() {
	return regex.test( $( this ).children( "a" ).text() );
	});
	}

	if ( match.length ) {
	this.focus( event, match );
	if ( match.length > 1 ) {
	this.previousFilter = character;
	this.filterTimer = this._delay(function() {
	delete this.previousFilter;
	}, 1000 );
	} else {
	delete this.previousFilter;
	}
	} else {
	delete this.previousFilter;
	}
	}

	if ( preventDefault ) {
	event.preventDefault();
	}
	},

	_activate: function( event ) {
	if ( !this.active.is( ".ui-state-disabled" ) ) {
	if ( this.active.children( "a[aria-haspopup='true']" ).length ) {
	this.expand( event );
	} else {
	this.select( event );
	}
	}
	},

	refresh: function() {
	var menus,
	icon = this.options.icons.submenu,
	submenus = this.element.find( this.options.menus );

	// Initialize nested menus
	submenus.filter( ":not(.ui-menu)" )
	.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
	.hide()
	.attr({
	role: this.options.role,
	"aria-hidden": "true",
	"aria-expanded": "false"
	})
	.each(function() {
	var menu = $( this ),
	item = menu.prev( "a" ),
	submenuCarat = $( "<span>" )
	.addClass( "ui-menu-icon ui-icon " + icon )
	.data( "ui-menu-submenu-carat", true );

	item
	.attr( "aria-haspopup", "true" )
	.prepend( submenuCarat );
	menu.attr( "aria-labelledby", item.attr( "id" ) );
	});

	menus = submenus.add( this.element );

	// Don't refresh list items that are already adapted
	menus.children( ":not(.ui-menu-item):has(a)" )
	.addClass( "ui-menu-item" )
	.attr( "role", "presentation" )
	.children( "a" )
	.uniqueId()
	.addClass( "ui-corner-all" )
	.attr({
	tabIndex: -1,
	role: this._itemRole()
	});

	// Initialize unlinked menu-items containing spaces and/or dashes only as dividers
	menus.children( ":not(.ui-menu-item)" ).each(function() {
	var item = $( this );
	// hyphen, em dash, en dash
	if ( !/[^\-—–\s]/.test( item.text() ) ) {
	item.addClass( "ui-widget-content ui-menu-divider" );
	}
	});

	// Add aria-disabled attribute to any disabled menu item
	menus.children( ".ui-state-disabled" ).attr( "aria-disabled", "true" );

	// If the active item has been removed, blur the menu
	if ( this.active && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) {
	this.blur();
	}
	},

	_itemRole: function() {
	return {
	menu: "menuitem",
	listbox: "option"
	}[ this.options.role ];
	},

	focus: function( event, item ) {
	var nested, focused;
	this.blur( event, event && event.type === "focus" );

	this._scrollIntoView( item );

	this.active = item.first();
	focused = this.active.children( "a" ).addClass( "ui-state-focus" );
	// Only update aria-activedescendant if there's a role
	// otherwise we assume focus is managed elsewhere
	if ( this.options.role ) {
	this.element.attr( "aria-activedescendant", focused.attr( "id" ) );
	}

	// Highlight active parent menu item, if any
	this.active
	.parent()
	.closest( ".ui-menu-item" )
	.children( "a:first" )
	.addClass( "ui-state-active" );

	if ( event && event.type === "keydown" ) {
	this._close();
	} else {
	this.timer = this._delay(function() {
	this._close();
	}, this.delay );
	}

	nested = item.children( ".ui-menu" );
	if ( nested.length && ( /^mouse/.test( event.type ) ) ) {
	this._startOpening(nested);
	}
	this.activeMenu = item.parent();

	this._trigger( "focus", event, { item: item } );
	},

	_scrollIntoView: function( item ) {
	var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight;
	if ( this._hasScroll() ) {
	borderTop = parseFloat( $.css( this.activeMenu[0], "borderTopWidth" ) ) \|\| 0;
	paddingTop = parseFloat( $.css( this.activeMenu[0], "paddingTop" ) ) \|\| 0;
	offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop;
	scroll = this.activeMenu.scrollTop();
	elementHeight = this.activeMenu.height();
	itemHeight = item.height();

	if ( offset < 0 ) {
	this.activeMenu.scrollTop( scroll + offset );
	} else if ( offset + itemHeight > elementHeight ) {
	this.activeMenu.scrollTop( scroll + offset - elementHeight + itemHeight );
	}
	}
	},

	blur: function( event, fromFocus ) {
	if ( !fromFocus ) {
	clearTimeout( this.timer );
	}

	if ( !this.active ) {
	return;
	}

	this.active.children( "a" ).removeClass( "ui-state-focus" );
	this.active = null;

	this._trigger( "blur", event, { item: this.active } );
	},

	_startOpening: function( submenu ) {
	clearTimeout( this.timer );

	// Don't open if already open fixes a Firefox bug that caused a .5 pixel
	// shift in the submenu position when mousing over the carat icon
	if ( submenu.attr( "aria-hidden" ) !== "true" ) {
	return;
	}

	this.timer = this._delay(function() {
	this._close();
	this._open( submenu );
	}, this.delay );
	},

	_open: function( submenu ) {
	var position = $.extend({
	of: this.active
	}, this.options.position );

	clearTimeout( this.timer );
	this.element.find( ".ui-menu" ).not( submenu.parents( ".ui-menu" ) )
	.hide()
	.attr( "aria-hidden", "true" );

	submenu
	.show()
	.removeAttr( "aria-hidden" )
	.attr( "aria-expanded", "true" )
	.position( position );
	},

	collapseAll: function( event, all ) {
	clearTimeout( this.timer );
	this.timer = this._delay(function() {
	// If we were passed an event, look for the submenu that contains the event
	var currentMenu = all ? this.element :
	$( event && event.target ).closest( this.element.find( ".ui-menu" ) );

	// If we found no valid submenu ancestor, use the main menu to close all sub menus anyway
	if ( !currentMenu.length ) {
	currentMenu = this.element;
	}

	this._close( currentMenu );

	this.blur( event );
	this.activeMenu = currentMenu;
	}, this.delay );
	},

	// With no arguments, closes the currently active menu - if nothing is active
	// it closes all menus. If passed an argument, it will search for menus BELOW
	_close: function( startMenu ) {
	if ( !startMenu ) {
	startMenu = this.active ? this.active.parent() : this.element;
	}

	startMenu
	.find( ".ui-menu" )
	.hide()
	.attr( "aria-hidden", "true" )
	.attr( "aria-expanded", "false" )
	.end()
	.find( "a.ui-state-active" )
	.removeClass( "ui-state-active" );
	},

	collapse: function( event ) {
	var newItem = this.active &&
	this.active.parent().closest( ".ui-menu-item", this.element );
	if ( newItem && newItem.length ) {
	this._close();
	this.focus( event, newItem );
	}
	},

	expand: function( event ) {
	var newItem = this.active &&
	this.active
	.children( ".ui-menu " )
	.children( ".ui-menu-item" )
	.first();

	if ( newItem && newItem.length ) {
	this._open( newItem.parent() );

	// Delay so Firefox will not hide activedescendant change in expanding submenu from AT
	this._delay(function() {
	this.focus( event, newItem );
	});
	}
	},

	next: function( event ) {
	this._move( "next", "first", event );
	},

	previous: function( event ) {
	this._move( "prev", "last", event );
	},

	isFirstItem: function() {
	return this.active && !this.active.prevAll( ".ui-menu-item" ).length;
	},

	isLastItem: function() {
	return this.active && !this.active.nextAll( ".ui-menu-item" ).length;
	},

	_move: function( direction, filter, event ) {
	var next;
	if ( this.active ) {
	if ( direction === "first" \|\| direction === "last" ) {
	next = this.active
	[ direction === "first" ? "prevAll" : "nextAll" ]( ".ui-menu-item" )
	.eq( -1 );
	} else {
	next = this.active
	[ direction + "All" ]( ".ui-menu-item" )
	.eq( 0 );
	}
	}
	if ( !next \|\| !next.length \|\| !this.active ) {
	next = this.activeMenu.children( ".ui-menu-item" )[ filter ]();
	}

	this.focus( event, next );
	},

	nextPage: function( event ) {
	var item, base, height;

	if ( !this.active ) {
	this.next( event );
	return;
	}
	if ( this.isLastItem() ) {
	return;
	}
	if ( this._hasScroll() ) {
	base = this.active.offset().top;
	height = this.element.height();
	this.active.nextAll( ".ui-menu-item" ).each(function() {
	item = $( this );
	return item.offset().top - base - height < 0;
	});

	this.focus( event, item );
	} else {
	this.focus( event, this.activeMenu.children( ".ui-menu-item" )
	[ !this.active ? "first" : "last" ]() );
	}
	},

	previousPage: function( event ) {
	var item, base, height;
	if ( !this.active ) {
	this.next( event );
	return;
	}
	if ( this.isFirstItem() ) {
	return;
	}
	if ( this._hasScroll() ) {
	base = this.active.offset().top;
	height = this.element.height();
	this.active.prevAll( ".ui-menu-item" ).each(function() {
	item = $( this );
	return item.offset().top - base + height > 0;
	});

	this.focus( event, item );
	} else {
	this.focus( event, this.activeMenu.children( ".ui-menu-item" ).first() );
	}
	},

	_hasScroll: function() {
	return this.element.outerHeight() < this.element.prop( "scrollHeight" );
	},

	select: function( event ) {
	// TODO: It should never be possible to not have an active item at this
	// point, but the tests don't trigger mouseenter before click.
	this.active = this.active \|\| $( event.target ).closest( ".ui-menu-item" );
	var ui = { item: this.active };
	if ( !this.active.has( ".ui-menu" ).length ) {
	this.collapseAll( event, true );
	}
	this._trigger( "select", event, ui );
	}
	});

	}( jQuery ));