text: /*! jQuery UI - v1.12.1 - 2018-05-20
  * http://jqueryui.com
  * Includes: widget.js, position.js, keycode.js, scroll-parent.js, unique-id.js
  * Copyright jQuery Foundation and other contributors; Licensed MIT */
  
  /*
  	NOTE: Original jQuery UI wrapper was replaced with a simple IIFE.
  	See README-Fancytree.md
  */
  (function( $ ) {
  
  $.ui = $.ui || {};
  
  var version = $.ui.version = "1.12.1";
  
  
  /*!
   * jQuery UI Widget 1.12.1
   * http://jqueryui.com
   *
   * Copyright jQuery Foundation and other contributors
   * Released under the MIT license.
   * http://jquery.org/license
   */
  
  //>>label: Widget
  //>>group: Core
  //>>description: Provides a factory for creating stateful widgets with a common API.
  //>>docs: http://api.jqueryui.com/jQuery.widget/
  //>>demos: http://jqueryui.com/widget/
  
  
  
  var widgetUuid = 0;
  var widgetSlice = Array.prototype.slice;
  
  $.cleanData = ( function( orig ) {
  	return function( elems ) {
  		var events, elem, i;
  		for ( i = 0; ( elem = elems[ i ] ) != null; i++ ) {
  			try {
  
  				// Only trigger remove when necessary to save time
  				events = $._data( elem, "events" );
  				if ( events && events.remove ) {
  					$( elem ).triggerHandler( "remove" );
  				}
  
  			// Http://bugs.jquery.com/ticket/8235
  			} catch ( e ) {}
  		}
  		orig( elems );
  	};
  } )( $.cleanData );
  
  $.widget = function( name, base, prototype ) {
  	var existingConstructor, constructor, basePrototype;
  
  	// ProxiedPrototype allows the provided prototype to remain unmodified
  	// so that it can be used as a mixin for multiple widgets (#8876)
  	var proxiedPrototype = {};
  
  	var namespace = name.split( "." )[ 0 ];
  	name = name.split( "." )[ 1 ];
  	var fullName = namespace + "-" + name;
  
  	if ( !prototype ) {
  		prototype = base;
  		base = $.Widget;
  	}
  
  	if ( $.isArray( prototype ) ) {
  		prototype = $.extend.apply( null, [ {} ].concat( prototype ) );
  	}
  
  	// Create selector for plugin
  	$.expr[ ":" ][ fullName.toLowerCase() ] = function( elem ) {
  		return !!$.data( elem, fullName );
  	};
  
  	$[ namespace ] = $[ namespace ] || {};
  	existingConstructor = $[ namespace ][ name ];
  	constructor = $[ namespace ][ name ] = function( options, element ) {
  
  		// Allow instantiation without "new" keyword
  		if ( !this._createWidget ) {
  			return new constructor( options, element );
  		}
  
  		// Allow instantiation without initializing for simple inheritance
  		// must use "new" keyword (the code above always passes args)
  		if ( arguments.length ) {
  			this._createWidget( options, element );
  		}
  	};
  
  	// Extend with the existing constructor to carry over any static properties
  	$.extend( constructor, existingConstructor, {
  		version: prototype.version,
  
  		// Copy the object used to create the prototype in case we need to
  		// redefine the widget later
  		_proto: $.extend( {}, prototype ),
  
  		// Track widgets that inherit from this widget in case this widget is
  		// redefined after a widget inherits from it
  		_childConstructors: []
  	} );
  
  	basePrototype = new base();
  
  	// We need to make the options hash a property directly on the new instance
  	// otherwise we'll modify the options hash on the prototype that we're
  	// inheriting from
  	basePrototype.options = $.widget.extend( {}, basePrototype.options );
  	$.each( prototype, function( prop, value ) {
  		if ( !$.isFunction( value ) ) {
  			proxiedPrototype[ prop ] = value;
  			return;
  		}
  		proxiedPrototype[ prop ] = ( function() {
  			function _super() {
  				return base.prototype[ prop ].apply( this, arguments );
  			}
  
  			function _superApply( args ) {
  				return base.prototype[ prop ].apply( this, args );
  			}
  
  			return function() {
  				var __super = this._super;
  				var __superApply = this._superApply;
  				var returnValue;
  
  				this._super = _super;
  				this._superApply = _superApply;
  
  				returnValue = value.apply( this, arguments );
  
  				this._super = __super;
  				this._superApply = __superApply;
  
  				return returnValue;
  			};
  		} )();
  	} );
  	constructor.prototype = $.widget.extend( basePrototype, {
  
  		// TODO: remove support for widgetEventPrefix
  		// always use the name + a colon as the prefix, e.g., draggable:start
  		// don't prefix for widgets that aren't DOM-based
  		widgetEventPrefix: existingConstructor ? ( basePrototype.widgetEventPrefix || name ) : name
  	}, proxiedPrototype, {
  		constructor: constructor,
  		namespace: namespace,
  		widgetName: name,
  		widgetFullName: fullName
  	} );
  
  	// If this widget is being redefined then we need to find all widgets that
  	// are inheriting from it and redefine all of them so that they inherit from
  	// the new version of this widget. We're essentially trying to replace one
  	// level in the prototype chain.
  	if ( existingConstructor ) {
  		$.each( existingConstructor._childConstructors, function( i, child ) {
  			var childPrototype = child.prototype;
  
  			// Redefine the child widget using the same prototype that was
  			// originally used, but inherit from the new version of the base
  			$.widget( childPrototype.namespace + "." + childPrototype.widgetName, constructor,
  				child._proto );
  		} );
  
  		// Remove the list of existing child constructors from the old constructor
  		// so the old child constructors can be garbage collected
  		delete existingConstructor._childConstructors;
  	} else {
  		base._childConstructors.push( constructor );
  	}
  
  	$.widget.bridge( name, constructor );
  
  	return constructor;
  };
  
  $.widget.extend = function( target ) {
  	var input = widgetSlice.call( arguments, 1 );
  	var inputIndex = 0;
  	var inputLength = input.length;
  	var key;
  	var value;
  
  	for ( ; inputIndex < inputLength; inputIndex++ ) {
  		for ( key in input[ inputIndex ] ) {
  			value = input[ inputIndex ][ key ];
  			if ( input[ inputIndex ].hasOwnProperty( key ) && value !== undefined ) {
  
  				// Clone objects
  				if ( $.isPlainObject( value ) ) {
  					target[ key ] = $.isPlainObject( target[ key ] ) ?
  						$.widget.extend( {}, target[ key ], value ) :
  
  						// Don't extend strings, arrays, etc. with objects
  						$.widget.extend( {}, value );
  
  				// Copy everything else by reference
  				} else {
  					target[ key ] = value;
  				}
  			}
  		}
  	}
  	return target;
  };
  
  $.widget.bridge = function( name, object ) {
  	var fullName = object.prototype.widgetFullName || name;
  	$.fn[ name ] = function( options ) {
  		var isMethodCall = typeof options === "string";
  		var args = widgetSlice.call( arguments, 1 );
  		var returnValue = this;
  
  		if ( isMethodCall ) {
  
  			// If this is an empty collection, we need to have the instance method
  			// return undefined instead of the jQuery instance
  			if ( !this.length && options === "instance" ) {
  				returnValue = undefined;
  			} else {
  				this.each( function() {
  					var methodValue;
  					var instance = $.data( this, fullName );
  
  					if ( options === "instance" ) {
  						returnValue = instance;
  						return false;
  					}
  
  					if ( !instance ) {
  						return $.error( "cannot call methods on " + name +
  							" prior to initialization; " +
  							"attempted to call method '" + options + "'" );
  					}
  
  					if ( !$.isFunction( instance[ options ] ) || options.charAt( 0 ) === "_" ) {
  						return $.error( "no such method '" + options + "' for " + name +
  							" widget instance" );
  					}
  
  					methodValue = instance[ options ].apply( instance, args );
  
  					if ( methodValue !== instance && methodValue !== undefined ) {
  						returnValue = methodValue && methodValue.jquery ?
  							returnValue.pushStack( methodValue.get() ) :
  							methodValue;
  						return false;
  					}
  				} );
  			}
  		} else {
  
  			// Allow multiple hashes to be passed on init
  			if ( args.length ) {
  				options = $.widget.extend.apply( null, [ options ].concat( args ) );
  			}
  
  			this.each( function() {
  				var instance = $.data( this, fullName );
  				if ( instance ) {
  					instance.option( options || {} );
  					if ( instance._init ) {
  						instance._init();
  					}
  				} else {
  					$.data( this, fullName, new object( options, this ) );
  				}
  			} );
  		}
  
  		return returnValue;
  	};
  };
  
  $.Widget = function( /* options, element */ ) {};
  $.Widget._childConstructors = [];
  
  $.Widget.prototype = {
  	widgetName: "widget",
  	widgetEventPrefix: "",
  	defaultElement: "<div>",
  
  	options: {
  		classes: {},
  		disabled: false,
  
  		// Callbacks
  		create: null
  	},
  
  	_createWidget: function( options, element ) {
  		element = $( element || this.defaultElement || this )[ 0 ];
  		this.element = $( element );
  		this.uuid = widgetUuid++;
  		this.eventNamespace = "." + this.widgetName + this.uuid;
  
  		this.bindings = $();
  		this.hoverable = $();
  		this.focusable = $();
  		this.classesElementLookup = {};
  
  		if ( element !== this ) {
  			$.data( element, this.widgetFullName, this );
  			this._on( true, this.element, {
  				remove: function( event ) {
  					if ( event.target === element ) {
  						this.destroy();
  					}
  				}
  			} );
  			this.document = $( element.style ?
  
  				// Element within the document
  				element.ownerDocument :
  
  				// Element is window or document
  				element.document || element );
  			this.window = $( this.document[ 0 ].defaultView || this.document[ 0 ].parentWindow );
  		}
  
  		this.options = $.widget.extend( {},
  			this.options,
  			this._getCreateOptions(),
  			options );
  
  		this._create();
  
  		if ( this.options.disabled ) {
  			this._setOptionDisabled( this.options.disabled );
  		}
  
  		this._trigger( "create", null, this._getCreateEventData() );
  		this._init();
  	},
  
  	_getCreateOptions: function() {
  		return {};
  	},
  
  	_getCreateEventData: $.noop,
  
  	_create: $.noop,
  
  	_init: $.noop,
  
  	destroy: function() {
  		var that = this;
  
  		this._destroy();
  		$.each( this.classesElementLookup, function( key, value ) {
  			that._removeClass( value, key );
  		} );
  
  		// We can probably remove the unbind calls in 2.0
  		// all event bindings should go through this._on()
  		this.element
  			.off( this.eventNamespace )
  			.removeData( this.widgetFullName );
  		this.widget()
  			.off( this.eventNamespace )
  			.removeAttr( "aria-disabled" );
  
  		// Clean up events and states
  		this.bindings.off( this.eventNamespace );
  	},
  
  	_destroy: $.noop,
  
  	widget: function() {
  		return this.element;
  	},
  
  	option: function( key, value ) {
  		var options = key;
  		var parts;
  		var curOption;
  		var i;
  
  		if ( arguments.length === 0 ) {
  
  			// Don't return a reference to the internal hash
  			return $.widget.extend( {}, this.options );
  		}
  
  		if ( typeof key === "string" ) {
  
  			// Handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } }
  			options = {};
  			parts = key.split( "." );
  			key = parts.shift();
  			if ( parts.length ) {
  				curOption = options[ key ] = $.widget.extend( {}, this.options[ key ] );
  				for ( i = 0; i < parts.length - 1; i++ ) {
  					curOption[ parts[ i ] ] = curOption[ parts[ i ] ] || {};
  					curOption = curOption[ parts[ i ] ];
  				}
  				key = parts.pop();
  				if ( arguments.length === 1 ) {
  					return curOption[ key ] === undefined ? null : curOption[ key ];
  				}
  				curOption[ key ] = value;
  			} else {
  				if ( arguments.length === 1 ) {
  					return this.options[ key ] === undefined ? null : this.options[ key ];
  				}
  				options[ key ] = value;
  			}
  		}
  
  		this._setOptions( options );
  
  		return this;
  	},
  
  	_setOptions: function( options ) {
  		var key;
  
  		for ( key in options ) {
  			this._setOption( key, options[ key ] );
  		}
  
  		return this;
  	},
  
  	_setOption: function( key, value ) {
  		if ( key === "classes" ) {
  			this._setOptionClasses( value );
  		}
  
  		this.options[ key ] = value;
  
  		if ( key === "disabled" ) {
  			this._setOptionDisabled( value );
  		}
  
  		return this;
  	},
  
  	_setOptionClasses: function( value ) {
  		var classKey, elements, currentElements;
  
  		for ( classKey in value ) {
  			currentElements = this.classesElementLookup[ classKey ];
  			if ( value[ classKey ] === this.options.classes[ classKey ] ||
  					!currentElements ||
  					!currentElements.length ) {
  				continue;
  			}
  
  			// We are doing this to create a new jQuery object because the _removeClass() call
  			// on the next line is going to destroy the reference to the current elements being
  			// tracked. We need to save a copy of this collection so that we can add the new classes
  			// below.
  			elements = $( currentElements.get() );
  			this._removeClass( currentElements, classKey );
  
  			// We don't use _addClass() here, because that uses this.options.classes
  			// for generating the string of classes. We want to use the value passed in from
  			// _setOption(), this is the new value of the classes option which was passed to
  			// _setOption(). We pass this value directly to _classes().
  			elements.addClass( this._classes( {
  				element: elements,
  				keys: classKey,
  				classes: value,
  				add: true
  			} ) );
  		}
  	},
  
  	_setOptionDisabled: function( value ) {
  		this._toggleClass( this.widget(), this.widgetFullName + "-disabled", null, !!value );
  
  		// If the widget is becoming disabled, then nothing is interactive
  		if ( value ) {
  			this._removeClass( this.hoverable, null, "ui-state-hover" );
  			this._removeClass( this.focusable, null, "ui-state-focus" );
  		}
  	},
  
  	enable: function() {
  		return this._setOptions( { disabled: false } );
  	},
  
  	disable: function() {
  		return this._setOptions( { disabled: true } );
  	},
  
  	_classes: function( options ) {
  		var full = [];
  		var that = this;
  
  		options = $.extend( {
  			element: this.element,
  			classes: this.options.classes || {}
  		}, options );
  
  		function processClassString( classes, checkOption ) {
  			var current, i;
  			for ( i = 0; i < classes.length; i++ ) {
  				current = that.classesElementLookup[ classes[ i ] ] || $();
  				if ( options.add ) {
  					current = $( $.unique( current.get().concat( options.element.get() ) ) );
  				} else {
  					current = $( current.not( options.element ).get() );
  				}
  				that.classesElementLookup[ classes[ i ] ] = current;
  				full.push( classes[ i ] );
  				if ( checkOption && options.classes[ classes[ i ] ] ) {
  					full.push( options.classes[ classes[ i ] ] );
  				}
  			}
  		}
  
  		this._on( options.element, {
  			"remove": "_untrackClassesElement"
  		} );
  
  		if ( options.keys ) {
  			processClassString( options.keys.match( /\S+/g ) || [], true );
  		}
  		if ( options.extra ) {
  			processClassString( options.extra.match( /\S+/g ) || [] );
  		}
  
  		return full.join( " " );
  	},
  
  	_untrackClassesElement: function( event ) {
  		var that = this;
  		$.each( that.classesElementLookup, function( key, value ) {
  			if ( $.inArray( event.target, value ) !== -1 ) {
  				that.classesElementLookup[ key ] = $( value.not( event.target ).get() );
  			}
  		} );
  	},
  
  	_removeClass: function( element, keys, extra ) {
  		return this._toggleClass( element, keys, extra, false );
  	},
  
  	_addClass: function( element, keys, extra ) {
  		return this._toggleClass( element, keys, extra, true );
  	},
  
  	_toggleClass: function( element, keys, extra, add ) {
  		add = ( typeof add === "boolean" ) ? add : extra;
  		var shift = ( typeof element === "string" || element === null ),
  			options = {
  				extra: shift ? keys : extra,
  				keys: shift ? element : keys,
  				element: shift ? this.element : element,
  				add: add
  			};
  		options.element.toggleClass( this._classes( options ), add );
  		return this;
  	},
  
  	_on: function( suppressDisabledCheck, element, handlers ) {
  		var delegateElement;
  		var instance = this;
  
  		// No suppressDisabledCheck flag, shuffle arguments
  		if ( typeof suppressDisabledCheck !== "boolean" ) {
  			handlers = element;
  			element = suppressDisabledCheck;
  			suppressDisabledCheck = false;
  		}
  
  		// No element argument, shuffle and use this.element
  		if ( !handlers ) {
  			handlers = element;
  			element = this.element;
  			delegateElement = this.widget();
  		} else {
  			element = delegateElement = $( element );
  			this.bindings = this.bindings.add( element );
  		}
  
  		$.each( handlers, function( event, handler ) {
  			function handlerProxy() {
  
  				// Allow widgets to customize the disabled handling
  				// - disabled as an array instead of boolean
  				// - disabled class as method for disabling individual parts
  				if ( !suppressDisabledCheck &&
  						( instance.options.disabled === true ||
  						$( this ).hasClass( "ui-state-disabled" ) ) ) {
  					return;
  				}
  				return ( typeof handler === "string" ? instance[ handler ] : handler )
  					.apply( instance, arguments );
  			}
  
  			// Copy the guid so direct unbinding works
  			if ( typeof handler !== "string" ) {
  				handlerProxy.guid = handler.guid =
  					handler.guid || handlerProxy.guid || $.guid++;
  			}
  
  			var match = event.match( /^([\w:-]*)\s*(.*)$/ );
  			var eventName = match[ 1 ] + instance.eventNamespace;
  			var selector = match[ 2 ];
  
  			if ( selector ) {
  				delegateElement.on( eventName, selector, handlerProxy );
  			} else {
  				element.on( eventName, handlerProxy );
  			}
  		} );
  	},
  
  	_off: function( element, eventName ) {
  		eventName = ( eventName || "" ).split( " " ).join( this.eventNamespace + " " ) +
  			this.eventNamespace;
  		element.off( eventName ).off( eventName );
  
  		// Clear the stack to avoid memory leaks (#10056)
  		this.bindings = $( this.bindings.not( element ).get() );
  		this.focusable = $( this.focusable.not( element ).get() );
  		this.hoverable = $( this.hoverable.not( element ).get() );
  	},
  
  	_delay: function( handler, delay ) {
  		function handlerProxy() {
  			return ( typeof handler === "string" ? instance[ handler ] : handler )
  				.apply( instance, arguments );
  		}
  		var instance = this;
  		return setTimeout( handlerProxy, delay || 0 );
  	},
  
  	_hoverable: function( element ) {
  		this.hoverable = this.hoverable.add( element );
  		this._on( element, {
  			mouseenter: function( event ) {
  				this._addClass( $( event.currentTarget ), null, "ui-state-hover" );
  			},
  			mouseleave: function( event ) {
  				this._removeClass( $( event.currentTarget ), null, "ui-state-hover" );
  			}
  		} );
  	},
  
  	_focusable: function( element ) {
  		this.focusable = this.focusable.add( element );
  		this._on( element, {
  			focusin: function( event ) {
  				this._addClass( $( event.currentTarget ), null, "ui-state-focus" );
  			},
  			focusout: function( event ) {
  				this._removeClass( $( event.currentTarget ), null, "ui-state-focus" );
  			}
  		} );
  	},
  
  	_trigger: function( type, event, data ) {
  		var prop, orig;
  		var callback = this.options[ type ];
  
  		data = data || {};
  		event = $.Event( event );
  		event.type = ( type === this.widgetEventPrefix ?
  			type :
  			this.widgetEventPrefix + type ).toLowerCase();
  
  		// The original event may come from any element
  		// so we need to reset the target on the new event
  		event.target = this.element[ 0 ];
  
  		// Copy original event properties over to the new event
  		orig = event.originalEvent;
  		if ( orig ) {
  			for ( prop in orig ) {
  				if ( !( prop in event ) ) {
  					event[ prop ] = orig[ prop ];
  				}
  			}
  		}
  
  		this.element.trigger( event, data );
  		return !( $.isFunction( callback ) &&
  			callback.apply( this.element[ 0 ], [ event ].concat( data ) ) === false ||
  			event.isDefaultPrevented() );
  	}
  };
  
  $.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) {
  	$.Widget.prototype[ "_" + method ] = function( element, options, callback ) {
  		if ( typeof options === "string" ) {
  			options = { effect: options };
  		}
  
  		var hasOptions;
  		var effectName = !options ?
  			method :
  			options === true || typeof options === "number" ?
  				defaultEffect :
  				options.effect || defaultEffect;
  
  		options = options || {};
  		if ( typeof options === "number" ) {
  			options = { duration: options };
  		}
  
  		hasOptions = !$.isEmptyObject( options );
  		options.complete = callback;
  
  		if ( options.delay ) {
  			element.delay( options.delay );
  		}
  
  		if ( hasOptions && $.effects && $.effects.effect[ effectName ] ) {
  			element[ method ]( options );
  		} else if ( effectName !== method && element[ effectName ] ) {
  			element[ effectName ]( options.duration, options.easing, callback );
  		} else {
  			element.queue( function( next ) {
  				$( this )[ method ]();
  				if ( callback ) {
  					callback.call( element[ 0 ] );
  				}
  				next();
  			} );
  		}
  	};
  } );
  
  var widget = $.widget;
  
  
  /*!
   * jQuery UI Position 1.12.1
   * http://jqueryui.com
   *
   * Copyright jQuery Foundation and other contributors
   * Released under the MIT license.
   * http://jquery.org/license
   *
   * http://api.jqueryui.com/position/
   */
  
  //>>label: Position
  //>>group: Core
  //>>description: Positions elements relative to other elements.
  //>>docs: http://api.jqueryui.com/position/
  //>>demos: http://jqueryui.com/position/
  
  
  ( function() {
  var cachedScrollbarWidth,
  	max = Math.max,
  	abs = Math.abs,
  	rhorizontal = /left|center|right/,
  	rvertical = /top|center|bottom/,
  	roffset = /[\+\-]\d+(\.[\d]+)?%?/,
  	rposition = /^\w+/,
  	rpercent = /%$/,
  	_position = $.fn.position;
  
  function getOffsets( offsets, width, height ) {
  	return [
  		parseFloat( offsets[ 0 ] ) * ( rpercent.test( offsets[ 0 ] ) ? width / 100 : 1 ),
  		parseFloat( offsets[ 1 ] ) * ( rpercent.test( offsets[ 1 ] ) ? height / 100 : 1 )
  	];
  }
  
  function parseCss( element, property ) {
  	return parseInt( $.css( element, property ), 10 ) || 0;
  }
  
  function getDimensions( elem ) {
  	var raw = elem[ 0 ];
  	if ( raw.nodeType === 9 ) {
  		return {
  			width: elem.width(),
  			height: elem.height(),
  			offset: { top: 0, left: 0 }
  		};
  	}
  	if ( $.isWindow( raw ) ) {
  		return {
  			width: elem.width(),
  			height: elem.height(),
  			offset: { top: elem.scrollTop(), left: elem.scrollLeft() }
  		};
  	}
  	if ( raw.preventDefault ) {
  		return {
  			width: 0,
  			height: 0,
  			offset: { top: raw.pageY, left: raw.pageX }
  		};
  	}
  	return {
  		width: elem.outerWidth(),
  		height: elem.outerHeight(),
  		offset: elem.offset()
  	};
  }
  
  $.position = {
  	scrollbarWidth: function() {
  		if ( cachedScrollbarWidth !== undefined ) {
  			return cachedScrollbarWidth;
  		}
  		var w1, w2,
  			div = $( "<div " +
  				"style='display:block;position:absolute;width:50px;height:50px;overflow:hidden;'>" +
  				"<div style='height:100px;width:auto;'></div></div>" ),
  			innerDiv = div.children()[ 0 ];
  
  		$( "body" ).append( div );
  		w1 = innerDiv.offsetWidth;
  		div.css( "overflow", "scroll" );
  
  		w2 = innerDiv.offsetWidth;
  
  		if ( w1 === w2 ) {
  			w2 = div[ 0 ].clientWidth;
  		}
  
  		div.remove();
  
  		return ( cachedScrollbarWidth = w1 - w2 );
  	},
  	getScrollInfo: function( within ) {
  		var overflowX = within.isWindow || within.isDocument ? "" :
  				within.element.css( "overflow-x" ),
  			overflowY = within.isWindow || within.isDocument ? "" :
  				within.element.css( "overflow-y" ),
  			hasOverflowX = overflowX === "scroll" ||
  				( overflowX === "auto" && within.width < within.element[ 0 ].scrollWidth ),
  			hasOverflowY = overflowY === "scroll" ||
  				( overflowY === "auto" && within.height < within.element[ 0 ].scrollHeight );
  		return {
  			width: hasOverflowY ? $.position.scrollbarWidth() : 0,
  			height: hasOverflowX ? $.position.scrollbarWidth() : 0
  		};
  	},
  	getWithinInfo: function( element ) {
  		var withinElement = $( element || window ),
  			isWindow = $.isWindow( withinElement[ 0 ] ),
  			isDocument = !!withinElement[ 0 ] && withinElement[ 0 ].nodeType === 9,
  			hasOffset = !isWindow && !isDocument;
  		return {
  			element: withinElement,
  			isWindow: isWindow,
  			isDocument: isDocument,
  			offset: hasOffset ? $( element ).offset() : { left: 0, top: 0 },
  			scrollLeft: withinElement.scrollLeft(),
  			scrollTop: withinElement.scrollTop(),
  			width: withinElement.outerWidth(),
  			height: withinElement.outerHeight()
  		};
  	}
  };
  
  $.fn.position = function( options ) {
  	if ( !options || !options.of ) {
  		return _position.apply( this, arguments );
  	}
  
  	// Make a copy, we don't want to modify arguments
  	options = $.extend( {}, options );
  
  	var atOffset, targetWidth, targetHeight, targetOffset, basePosition, dimensions,
  		target = $( options.of ),
  		within = $.position.getWithinInfo( options.within ),
  		scrollInfo = $.position.getScrollInfo( within ),
  		collision = ( options.collision || "flip" ).split( " " ),
  		offsets = {};
  
  	dimensions = getDimensions( target );
  	if ( target[ 0 ].preventDefault ) {
  
  		// Force left top to allow flipping
  		options.at = "left top";
  	}
  	targetWidth = dimensions.width;
  	targetHeight = dimensions.height;
  	targetOffset = dimensions.offset;
  
  	// Clone to reuse original targetOffset later
  	basePosition = $.extend( {}, targetOffset );
  
  	// Force my and at to have valid horizontal and vertical positions
  	// if a value is missing or invalid, it will be converted to center
  	$.each( [ "my", "at" ], function() {
  		var pos = ( options[ this ] || "" ).split( " " ),
  			horizontalOffset,
  			verticalOffset;
  
  		if ( pos.length === 1 ) {
  			pos = rhorizontal.test( pos[ 0 ] ) ?
  				pos.concat( [ "center" ] ) :
  				rvertical.test( pos[ 0 ] ) ?
  					[ "center" ].concat( pos ) :
  					[ "center", "center" ];
  		}
  		pos[ 0 ] = rhorizontal.test( pos[ 0 ] ) ? pos[ 0 ] : "center";
  		pos[ 1 ] = rvertical.test( pos[ 1 ] ) ? pos[ 1 ] : "center";
  
  		// Calculate offsets
  		horizontalOffset = roffset.exec( pos[ 0 ] );
  		verticalOffset = roffset.exec( pos[ 1 ] );
  		offsets[ this ] = [
  			horizontalOffset ? horizontalOffset[ 0 ] : 0,
  			verticalOffset ? verticalOffset[ 0 ] : 0
  		];
  
  		// Reduce to just the positions without the offsets
  		options[ this ] = [
  			rposition.exec( pos[ 0 ] )[ 0 ],
  			rposition.exec( pos[ 1 ] )[ 0 ]
  		];
  	} );
  
  	// Normalize collision option
  	if ( collision.length === 1 ) {
  		collision[ 1 ] = collision[ 0 ];
  	}
  
  	if ( options.at[ 0 ] === "right" ) {
  		basePosition.left += targetWidth;
  	} else if ( options.at[ 0 ] === "center" ) {
  		basePosition.left += targetWidth / 2;
  	}
  
  	if ( options.at[ 1 ] === "bottom" ) {
  		basePosition.top += targetHeight;
  	} else if ( options.at[ 1 ] === "center" ) {
  		basePosition.top += targetHeight / 2;
  	}
  
  	atOffset = getOffsets( offsets.at, targetWidth, targetHeight );
  	basePosition.left += atOffset[ 0 ];
  	basePosition.top += atOffset[ 1 ];
  
  	return this.each( function() {
  		var collisionPosition, using,
  			elem = $( this ),
  			elemWidth = elem.outerWidth(),
  			elemHeight = elem.outerHeight(),
  			marginLeft = parseCss( this, "marginLeft" ),
  			marginTop = parseCss( this, "marginTop" ),
  			collisionWidth = elemWidth + marginLeft + parseCss( this, "marginRight" ) +
  				scrollInfo.width,
  			collisionHeight = elemHeight + marginTop + parseCss( this, "marginBottom" ) +
  				scrollInfo.height,
  			position = $.extend( {}, basePosition ),
  			myOffset = getOffsets( offsets.my, elem.outerWidth(), elem.outerHeight() );
  
  		if ( options.my[ 0 ] === "right" ) {
  			position.left -= elemWidth;
  		} else if ( options.my[ 0 ] === "center" ) {
  			position.left -= elemWidth / 2;
  		}
  
  		if ( options.my[ 1 ] === "bottom" ) {
  			position.top -= elemHeight;
  		} else if ( options.my[ 1 ] === "center" ) {
  			position.top -= elemHeight / 2;
  		}
  
  		position.left += myOffset[ 0 ];
  		position.top += myOffset[ 1 ];
  
  		collisionPosition = {
  			marginLeft: marginLeft,
  			marginTop: marginTop
  		};
  
  		$.each( [ "left", "top" ], function( i, dir ) {
  			if ( $.ui.position[ collision[ i ] ] ) {
  				$.ui.position[ collision[ i ] ][ dir ]( position, {
  					targetWidth: targetWidth,
  					targetHeight: targetHeight,
  					elemWidth: elemWidth,
  					elemHeight: elemHeight,
  					collisionPosition: collisionPosition,
  					collisionWidth: collisionWidth,
  					collisionHeight: collisionHeight,
  					offset: [ atOffset[ 0 ] + myOffset[ 0 ], atOffset [ 1 ] + myOffset[ 1 ] ],
  					my: options.my,
  					at: options.at,
  					within: within,
  					elem: elem
  				} );
  			}
  		} );
  
  		if ( options.using ) {
  
  			// Adds feedback as second argument to using callback, if present
  			using = function( props ) {
  				var left = targetOffset.left - position.left,
  					right = left + targetWidth - elemWidth,
  					top = targetOffset.top - position.top,
  					bottom = top + targetHeight - elemHeight,
  					feedback = {
  						target: {
  							element: target,
  							left: targetOffset.left,
  							top: targetOffset.top,
  							width: targetWidth,
  							height: targetHeight
  						},
  						element: {
  							element: elem,
  							left: position.left,
  							top: position.top,
  							width: elemWidth,
  							height: elemHeight
  						},
  						horizontal: right < 0 ? "left" : left > 0 ? "right" : "center",
  						vertical: bottom < 0 ? "top" : top > 0 ? "bottom" : "middle"
  					};
  				if ( targetWidth < elemWidth && abs( left + right ) < targetWidth ) {
  					feedback.horizontal = "center";
  				}
  				if ( targetHeight < elemHeight && abs( top + bottom ) < targetHeight ) {
  					feedback.vertical = "middle";
  				}
  				if ( max( abs( left ), abs( right ) ) > max( abs( top ), abs( bottom ) ) ) {
  					feedback.important = "horizontal";
  				} else {
  					feedback.important = "vertical";
  				}
  				options.using.call( this, props, feedback );
  			};
  		}
  
  		elem.offset( $.extend( position, { using: using } ) );
  	} );
  };
  
  $.ui.position = {
  	fit: {
  		left: function( position, data ) {
  			var within = data.within,
  				withinOffset = within.isWindow ? within.scrollLeft : within.offset.left,
  				outerWidth = within.width,
  				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
  				overLeft = withinOffset - collisionPosLeft,
  				overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
  				newOverRight;
  
  			// Element is wider than within
  			if ( data.collisionWidth > outerWidth ) {
  
  				// Element is initially over the left side of within
  				if ( overLeft > 0 && overRight <= 0 ) {
  					newOverRight = position.left + overLeft + data.collisionWidth - outerWidth -
  						withinOffset;
  					position.left += overLeft - newOverRight;
  
  				// Element is initially over right side of within
  				} else if ( overRight > 0 && overLeft <= 0 ) {
  					position.left = withinOffset;
  
  				// Element is initially over both left and right sides of within
  				} else {
  					if ( overLeft > overRight ) {
  						position.left = withinOffset + outerWidth - data.collisionWidth;
  					} else {
  						position.left = withinOffset;
  					}
  				}
  
  			// Too far left -> align with left edge
  			} else if ( overLeft > 0 ) {
  				position.left += overLeft;
  
  			// Too far right -> align with right edge
  			} else if ( overRight > 0 ) {
  				position.left -= overRight;
  
  			// Adjust based on position and margin
  			} else {
  				position.left = max( position.left - collisionPosLeft, position.left );
  			}
  		},
  		top: function( position, data ) {
  			var within = data.within,
  				withinOffset = within.isWindow ? within.scrollTop : within.offset.top,
  				outerHeight = data.within.height,
  				collisionPosTop = position.top - data.collisionPosition.marginTop,
  				overTop = withinOffset - collisionPosTop,
  				overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
  				newOverBottom;
  
  			// Element is taller than within
  			if ( data.collisionHeight > outerHeight ) {
  
  				// Element is initially over the top of within
  				if ( overTop > 0 && overBottom <= 0 ) {
  					newOverBottom = position.top + overTop + data.collisionHeight - outerHeight -
  						withinOffset;
  					position.top += overTop - newOverBottom;
  
  				// Element is initially over bottom of within
  				} else if ( overBottom > 0 && overTop <= 0 ) {
  					position.top = withinOffset;
  
  				// Element is initially over both top and bottom of within
  				} else {
  					if ( overTop > overBottom ) {
  						position.top = withinOffset + outerHeight - data.collisionHeight;
  					} else {
  						position.top = withinOffset;
  					}
  				}
  
  			// Too far up -> align with top
  			} else if ( overTop > 0 ) {
  				position.top += overTop;
  
  			// Too far down -> align with bottom edge
  			} else if ( overBottom > 0 ) {
  				position.top -= overBottom;
  
  			// Adjust based on position and margin
  			} else {
  				position.top = max( position.top - collisionPosTop, position.top );
  			}
  		}
  	},
  	flip: {
  		left: function( position, data ) {
  			var within = data.within,
  				withinOffset = within.offset.left + within.scrollLeft,
  				outerWidth = within.width,
  				offsetLeft = within.isWindow ? within.scrollLeft : within.offset.left,
  				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
  				overLeft = collisionPosLeft - offsetLeft,
  				overRight = collisionPosLeft + data.collisionWidth - outerWidth - offsetLeft,
  				myOffset = data.my[ 0 ] === "left" ?
  					-data.elemWidth :
  					data.my[ 0 ] === "right" ?
  						data.elemWidth :
  						0,
  				atOffset = data.at[ 0 ] === "left" ?
  					data.targetWidth :
  					data.at[ 0 ] === "right" ?
  						-data.targetWidth :
  						0,
  				offset = -2 * data.offset[ 0 ],
  				newOverRight,
  				newOverLeft;
  
  			if ( overLeft < 0 ) {
  				newOverRight = position.left + myOffset + atOffset + offset + data.collisionWidth -
  					outerWidth - withinOffset;
  				if ( newOverRight < 0 || newOverRight < abs( overLeft ) ) {
  					position.left += myOffset + atOffset + offset;
  				}
  			} else if ( overRight > 0 ) {
  				newOverLeft = position.left - data.collisionPosition.marginLeft + myOffset +
  					atOffset + offset - offsetLeft;
  				if ( newOverLeft > 0 || abs( newOverLeft ) < overRight ) {
  					position.left += myOffset + atOffset + offset;
  				}
  			}
  		},
  		top: function( position, data ) {
  			var within = data.within,
  				withinOffset = within.offset.top + within.scrollTop,
  				outerHeight = within.height,
  				offsetTop = within.isWindow ? within.scrollTop : within.offset.top,
  				collisionPosTop = position.top - data.collisionPosition.marginTop,
  				overTop = collisionPosTop - offsetTop,
  				overBottom = collisionPosTop + data.collisionHeight - outerHeight - offsetTop,
  				top = data.my[ 1 ] === "top",
  				myOffset = top ?
  					-data.elemHeight :
  					data.my[ 1 ] === "bottom" ?
  						data.elemHeight :
  						0,
  				atOffset = data.at[ 1 ] === "top" ?
  					data.targetHeight :
  					data.at[ 1 ] === "bottom" ?
  						-data.targetHeight :
  						0,
  				offset = -2 * data.offset[ 1 ],
  				newOverTop,
  				newOverBottom;
  			if ( overTop < 0 ) {
  				newOverBottom = position.top + myOffset + atOffset + offset + data.collisionHeight -
  					outerHeight - withinOffset;
  				if ( newOverBottom < 0 || newOverBottom < abs( overTop ) ) {
  					position.top += myOffset + atOffset + offset;
  				}
  			} else if ( overBottom > 0 ) {
  				newOverTop = position.top - data.collisionPosition.marginTop + myOffset + atOffset +
  					offset - offsetTop;
  				if ( newOverTop > 0 || abs( newOverTop ) < overBottom ) {
  					position.top += myOffset + atOffset + offset;
  				}
  			}
  		}
  	},
  	flipfit: {
  		left: function() {
  			$.ui.position.flip.left.apply( this, arguments );
  			$.ui.position.fit.left.apply( this, arguments );
  		},
  		top: function() {
  			$.ui.position.flip.top.apply( this, arguments );
  			$.ui.position.fit.top.apply( this, arguments );
  		}
  	}
  };
  
  } )();
  
  var position = $.ui.position;
  
  
  /*!
   * jQuery UI Keycode 1.12.1
   * http://jqueryui.com
   *
   * Copyright jQuery Foundation and other contributors
   * Released under the MIT license.
   * http://jquery.org/license
   */
  
  //>>label: Keycode
  //>>group: Core
  //>>description: Provide keycodes as keynames
  //>>docs: http://api.jqueryui.com/jQuery.ui.keyCode/
  
  
  var keycode = $.ui.keyCode = {
  	BACKSPACE: 8,
  	COMMA: 188,
  	DELETE: 46,
  	DOWN: 40,
  	END: 35,
  	ENTER: 13,
  	ESCAPE: 27,
  	HOME: 36,
  	LEFT: 37,
  	PAGE_DOWN: 34,
  	PAGE_UP: 33,
  	PERIOD: 190,
  	RIGHT: 39,
  	SPACE: 32,
  	TAB: 9,
  	UP: 38
  };
  
  
  /*!
   * jQuery UI Scroll Parent 1.12.1
   * http://jqueryui.com
   *
   * Copyright jQuery Foundation and other contributors
   * Released under the MIT license.
   * http://jquery.org/license
   */
  
  //>>label: scrollParent
  //>>group: Core
  //>>description: Get the closest ancestor element that is scrollable.
  //>>docs: http://api.jqueryui.com/scrollParent/
  
  
  
  var scrollParent = $.fn.scrollParent = function( includeHidden ) {
  	var position = this.css( "position" ),
  		excludeStaticParent = position === "absolute",
  		overflowRegex = includeHidden ? /(auto|scroll|hidden)/ : /(auto|scroll)/,
  		scrollParent = this.parents().filter( function() {
  			var parent = $( this );
  			if ( excludeStaticParent && parent.css( "position" ) === "static" ) {
  				return false;
  			}
  			return overflowRegex.test( parent.css( "overflow" ) + parent.css( "overflow-y" ) +
  				parent.css( "overflow-x" ) );
  		} ).eq( 0 );
  
  	return position === "fixed" || !scrollParent.length ?
  		$( this[ 0 ].ownerDocument || document ) :
  		scrollParent;
  };
  
  
  /*!
   * jQuery UI Unique ID 1.12.1
   * http://jqueryui.com
   *
   * Copyright jQuery Foundation and other contributors
   * Released under the MIT license.
   * http://jquery.org/license
   */
  
  //>>label: uniqueId
  //>>group: Core
  //>>description: Functions to generate and remove uniqueId's
  //>>docs: http://api.jqueryui.com/uniqueId/
  
  
  
  var uniqueId = $.fn.extend( {
  	uniqueId: ( function() {
  		var uuid = 0;
  
  		return function() {
  			return this.each( function() {
  				if ( !this.id ) {
  					this.id = "ui-id-" + ( ++uuid );
  				}
  			} );
  		};
  	} )(),
  
  	removeUniqueId: function() {
  		return this.each( function() {
  			if ( /^ui-id-\d+$/.test( this.id ) ) {
  				$( this ).removeAttr( "id" );
  			}
  		} );
  	}
  } );
  
  
  // NOTE: Original jQuery UI wrapper was replaced. See README-Fancytree.md
  // }));
  })(jQuery);
  