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Edit File: chosen.js

/*!
Chosen, a Select Box Enhancer for jQuery and Prototype
by Patrick Filler for Harvest, http://getharvest.com

Version 1.2.0
Full source at https://github.com/harvesthq/chosen
Copyright (c) 2011-2014 Harvest http://getharvest.com

MIT License, https://github.com/harvesthq/chosen/blob/master/LICENSE.md
This file is generated by `grunt build`, do not edit it by hand.
*/

( function () {
	let $,
		AbstractChosen,
		Chosen,
		SelectParser,
		_ref,
		__hasProp = {}.hasOwnProperty,
		__extends = function ( child, parent ) {
			for ( const key in parent ) {
				if ( __hasProp.call( parent, key ) )
					child[ key ] = parent[ key ];
			}
			function ctor() {
				this.constructor = child;
			}
			ctor.prototype = parent.prototype;
			child.prototype = new ctor();
			child.__super__ = parent.prototype;
			return child;
		};

SelectParser = ( function () {
		function SelectParser() {
			this.options_index = 0;
			this.parsed = [];
		}

SelectParser.prototype.add_node = function ( child ) {
			if ( child.nodeName.toUpperCase() === 'OPTGROUP' ) {
				return this.add_group( child );
			}
			return this.add_option( child );
		};

SelectParser.prototype.add_group = function ( group ) {
			let group_position, option, _i, _len, _ref, _results;
			group_position = this.parsed.length;
			this.parsed.push( {
				array_index: group_position,
				group: true,
				label: this.escapeExpression( group.label ),
				children: 0,
				disabled: group.disabled,
			} );
			_ref = group.childNodes;
			_results = [];
			for ( _i = 0, _len = _ref.length; _i < _len; _i++ ) {
				option = _ref[ _i ];
				_results.push(
					this.add_option( option, group_position, group.disabled )
				);
			}
			return _results;
		};

SelectParser.prototype.add_option = function (
			option,
			group_position,
			group_disabled
		) {
			if ( option.nodeName.toUpperCase() === 'OPTION' ) {
				if ( option.text !== '' ) {
					if ( group_position != null ) {
						this.parsed[ group_position ].children += 1;
					}
					this.parsed.push( {
						array_index: this.parsed.length,
						options_index: this.options_index,
						value: option.value,
						text: option.text,
						html: option.innerHTML,
						selected: option.selected,
						disabled:
							group_disabled === true
								? group_disabled
								: option.disabled,
						group_array_index: group_position,
						classes: option.className,
						style: option.style.cssText,
					} );
				} else {
					this.parsed.push( {
						array_index: this.parsed.length,
						options_index: this.options_index,
						empty: true,
					} );
				}
				return ( this.options_index += 1 );
			}
		};

SelectParser.prototype.escapeExpression = function ( text ) {
			let map, unsafe_chars;
			if ( text == null || text === false ) {
				return '';
			}
			if ( ! /[\&\<\>\"\'\`]/.test( text ) ) {
				return text;
			}
			map = {
				'<': '&lt;',
				'>': '&gt;',
				'"': '&quot;',
				"'": '&#x27;',
				'`': '&#x60;',
			};
			unsafe_chars = /&(?!\w+;)|[\<\>\"\'\`]/g;
			return text.replace( unsafe_chars, function ( chr ) {
				return map[ chr ] || '&amp;';
			} );
		};

return SelectParser;
	} )();

SelectParser.select_to_array = function ( select ) {
		let child, parser, _i, _len, _ref;
		parser = new SelectParser();
		_ref = select.childNodes;
		for ( _i = 0, _len = _ref.length; _i < _len; _i++ ) {
			child = _ref[ _i ];
			parser.add_node( child );
		}
		return parser.parsed;
	};

AbstractChosen = ( function () {
		function AbstractChosen( form_field, options ) {
			this.form_field = form_field;
			this.options = options != null ? options : {};
			if ( ! AbstractChosen.browser_is_supported() ) {
				return;
			}
			this.is_multiple = this.form_field.multiple;
			this.set_default_text();
			this.set_default_values();
			this.setup();
			this.set_up_html();
			this.register_observers();
		}

AbstractChosen.prototype.set_default_values = function () {
			const _this = this;
			this.click_test_action = function ( evt ) {
				return _this.test_active_click( evt );
			};
			this.activate_action = function ( evt ) {
				return _this.activate_field( evt );
			};
			this.active_field = false;
			this.mouse_on_container = false;
			this.results_showing = false;
			this.result_highlighted = null;
			this.allow_single_deselect =
				this.options.allow_single_deselect != null &&
				this.form_field.options[ 0 ] != null &&
				this.form_field.options[ 0 ].text === ''
					? this.options.allow_single_deselect
					: false;
			this.disable_search_threshold =
				this.options.disable_search_threshold || 0;
			this.disable_search = this.options.disable_search || false;
			this.enable_split_word_search =
				this.options.enable_split_word_search != null
					? this.options.enable_split_word_search
					: true;
			this.group_search =
				this.options.group_search != null
					? this.options.group_search
					: true;
			this.search_contains = this.options.search_contains || false;
			this.single_backstroke_delete =
				this.options.single_backstroke_delete != null
					? this.options.single_backstroke_delete
					: true;
			this.max_selected_options =
				this.options.max_selected_options || Infinity;
			this.inherit_select_classes =
				this.options.inherit_select_classes || false;
			this.display_selected_options =
				this.options.display_selected_options != null
					? this.options.display_selected_options
					: true;
			return ( this.display_disabled_options =
				this.options.display_disabled_options != null
					? this.options.display_disabled_options
					: true );
		};

AbstractChosen.prototype.set_default_text = function () {
			if ( this.form_field.getAttribute( 'data-placeholder' ) ) {
				this.default_text = this.form_field.getAttribute(
					'data-placeholder'
				);
			} else if ( this.is_multiple ) {
				this.default_text =
					this.options.placeholder_text_multiple ||
					this.options.placeholder_text ||
					AbstractChosen.default_multiple_text;
			} else {
				this.default_text =
					this.options.placeholder_text_single ||
					this.options.placeholder_text ||
					AbstractChosen.default_single_text;
			}
			return ( this.results_none_found =
				this.form_field.getAttribute( 'data-no_results_text' ) ||
				this.options.no_results_text ||
				AbstractChosen.default_no_result_text );
		};

AbstractChosen.prototype.mouse_enter = function () {
			return ( this.mouse_on_container = true );
		};

AbstractChosen.prototype.mouse_leave = function () {
			return ( this.mouse_on_container = false );
		};

AbstractChosen.prototype.input_focus = function ( evt ) {
			const _this = this;
			if ( this.is_multiple ) {
				if ( ! this.active_field ) {
					return setTimeout( function () {
						return _this.container_mousedown();
					}, 50 );
				}
			} else if ( ! this.active_field ) {
				return this.activate_field();
			}
		};

AbstractChosen.prototype.input_blur = function ( evt ) {
			const _this = this;
			if ( ! this.mouse_on_container ) {
				this.active_field = false;
				return setTimeout( function () {
					return _this.blur_test();
				}, 100 );
			}
		};

AbstractChosen.prototype.results_option_build = function ( options ) {
			let content, data, _i, _len, _ref;
			content = '';
			_ref = this.results_data;
			for ( _i = 0, _len = _ref.length; _i < _len; _i++ ) {
				data = _ref[ _i ];
				if ( data.group ) {
					content += this.result_add_group( data );
				} else {
					content += this.result_add_option( data );
				}
				if ( options != null ? options.first : void 0 ) {
					if ( data.selected && this.is_multiple ) {
						this.choice_build( data );
					} else if ( data.selected && ! this.is_multiple ) {
						this.single_set_selected_text( data.text );
					}
				}
			}
			return content;
		};

AbstractChosen.prototype.result_add_option = function ( option ) {
			let classes, option_el;
			if ( ! option.search_match ) {
				return '';
			}
			if ( ! this.include_option_in_results( option ) ) {
				return '';
			}
			classes = [];
			if (
				! option.disabled &&
				! ( option.selected && this.is_multiple )
			) {
				classes.push( 'active-result' );
			}
			if (
				option.disabled &&
				! ( option.selected && this.is_multiple )
			) {
				classes.push( 'disabled-result' );
			}
			if ( option.selected ) {
				classes.push( 'result-selected' );
			}
			if ( option.group_array_index != null ) {
				classes.push( 'group-option' );
			}
			if ( option.classes !== '' ) {
				classes.push( option.classes );
			}
			option_el = document.createElement( 'li' );
			option_el.className = classes.join( ' ' );
			option_el.style.cssText = option.style;
			option_el.setAttribute(
				'data-option-array-index',
				option.array_index
			);
			option_el.innerHTML = option.search_text;
			return this.outerHTML( option_el );
		};

AbstractChosen.prototype.result_add_group = function ( group ) {
			let group_el;
			if ( ! ( group.search_match || group.group_match ) ) {
				return '';
			}
			if ( ! ( group.active_options > 0 ) ) {
				return '';
			}
			group_el = document.createElement( 'li' );
			group_el.className = 'group-result';
			group_el.innerHTML = group.search_text;
			return this.outerHTML( group_el );
		};

AbstractChosen.prototype.results_update_field = function () {
			this.set_default_text();
			if ( ! this.is_multiple ) {
				this.results_reset_cleanup();
			}
			this.result_clear_highlight();
			this.results_build();
			if ( this.results_showing ) {
				return this.winnow_results();
			}
		};

AbstractChosen.prototype.reset_single_select_options = function () {
			let result, _i, _len, _ref, _results;
			_ref = this.results_data;
			_results = [];
			for ( _i = 0, _len = _ref.length; _i < _len; _i++ ) {
				result = _ref[ _i ];
				if ( result.selected ) {
					_results.push( ( result.selected = false ) );
				} else {
					_results.push( void 0 );
				}
			}
			return _results;
		};

AbstractChosen.prototype.results_toggle = function () {
			if ( this.results_showing ) {
				return this.results_hide();
			}
			return this.results_show();
		};

AbstractChosen.prototype.results_search = function ( evt ) {
			if ( this.results_showing ) {
				return this.winnow_results();
			}
			return this.results_show();
		};

AbstractChosen.prototype.winnow_results = function () {
			let escapedSearchText,
				option,
				regex,
				results,
				results_group,
				searchText,
				startpos,
				text,
				zregex,
				_i,
				_len,
				_ref;
			this.no_results_clear();
			results = 0;
			searchText = this.get_search_text();
			escapedSearchText = searchText.replace(
				/[-[\]{}()*+?.,\\^$|#\s]/g,
				'\\$&'
			);
			zregex = new RegExp( escapedSearchText, 'i' );
			regex = this.get_search_regex( escapedSearchText );
			_ref = this.results_data;
			for ( _i = 0, _len = _ref.length; _i < _len; _i++ ) {
				option = _ref[ _i ];
				option.search_match = false;
				results_group = null;
				if ( this.include_option_in_results( option ) ) {
					if ( option.group ) {
						option.group_match = false;
						option.active_options = 0;
					}
					if (
						option.group_array_index != null &&
						this.results_data[ option.group_array_index ]
					) {
						results_group = this.results_data[
							option.group_array_index
						];
						if (
							results_group.active_options === 0 &&
							results_group.search_match
						) {
							results += 1;
						}
						results_group.active_options += 1;
					}
					if ( ! ( option.group && ! this.group_search ) ) {
						option.search_text = option.group
							? option.label
							: option.text;
						option.search_match = this.search_string_match(
							option.search_text,
							regex
						);
						if ( option.search_match && ! option.group ) {
							results += 1;
						}
						if ( option.search_match ) {
							if ( searchText.length ) {
								startpos = option.search_text.search( zregex );
								text =
									option.search_text.substr(
										0,
										startpos + searchText.length
									) +
									'</em>' +
									option.search_text.substr(
										startpos + searchText.length
									);
								option.search_text =
									text.substr( 0, startpos ) +
									'<em>' +
									text.substr( startpos );
							}
							if ( results_group != null ) {
								results_group.group_match = true;
							}
						} else if (
							option.group_array_index != null &&
							this.results_data[ option.group_array_index ]
								.search_match
						) {
							option.search_match = true;
						}
					}
				}
			}
			this.result_clear_highlight();
			if ( results < 1 && searchText.length ) {
				this.update_results_content( '' );
				return this.no_results( searchText );
			}
			this.update_results_content( this.results_option_build() );
			return this.winnow_results_set_highlight();
		};

AbstractChosen.prototype.get_search_regex = function (
			escaped_search_string
		) {
			let regex_anchor;
			regex_anchor = this.search_contains ? '' : '^';
			return new RegExp( regex_anchor + escaped_search_string, 'i' );
		};

AbstractChosen.prototype.search_string_match = function (
			search_string,
			regex
		) {
			let part, parts, _i, _len;
			if ( regex.test( search_string ) ) {
				return true;
			} else if (
				this.enable_split_word_search &&
				( search_string.indexOf( ' ' ) >= 0 ||
					search_string.indexOf( '[' ) === 0 )
			) {
				parts = search_string.replace( /\[|\]/g, '' ).split( ' ' );
				if ( parts.length ) {
					for ( _i = 0, _len = parts.length; _i < _len; _i++ ) {
						part = parts[ _i ];
						if ( regex.test( part ) ) {
							return true;
						}
					}
				}
			}
		};

AbstractChosen.prototype.choices_count = function () {
			let option, _i, _len, _ref;
			if ( this.selected_option_count != null ) {
				return this.selected_option_count;
			}
			this.selected_option_count = 0;
			_ref = this.form_field.options;
			for ( _i = 0, _len = _ref.length; _i < _len; _i++ ) {
				option = _ref[ _i ];
				if ( option.selected ) {
					this.selected_option_count += 1;
				}
			}
			return this.selected_option_count;
		};

AbstractChosen.prototype.choices_click = function ( evt ) {
			evt.preventDefault();
			if ( ! ( this.results_showing || this.is_disabled ) ) {
				return this.results_show();
			}
		};

AbstractChosen.prototype.keyup_checker = function ( evt ) {
			let stroke, _ref;
			stroke = ( _ref = evt.which ) != null ? _ref : evt.keyCode;
			this.search_field_scale();
			switch ( stroke ) {
				case 8:
					if (
						this.is_multiple &&
						this.backstroke_length < 1 &&
						this.choices_count() > 0
					) {
						return this.keydown_backstroke();
					} else if ( ! this.pending_backstroke ) {
						this.result_clear_highlight();
						return this.results_search();
					}
					break;
				case 13:
					evt.preventDefault();
					if ( this.results_showing ) {
						return this.result_select( evt );
					}
					break;
				case 27:
					if ( this.results_showing ) {
						this.results_hide();
					}
					return true;
				case 9:
				case 38:
				case 40:
				case 16:
				case 91:
				case 17:
					break;
				default:
					return this.results_search();
			}
		};

AbstractChosen.prototype.clipboard_event_checker = function ( evt ) {
			const _this = this;
			return setTimeout( function () {
				return _this.results_search();
			}, 50 );
		};

AbstractChosen.prototype.container_width = function () {
			if ( this.options.width != null ) {
				return this.options.width;
			}
			return '' + this.form_field.offsetWidth + 'px';
		};

AbstractChosen.prototype.include_option_in_results = function (
			option
		) {
			if (
				this.is_multiple &&
				! this.display_selected_options &&
				option.selected
			) {
				return false;
			}
			if ( ! this.display_disabled_options && option.disabled ) {
				return false;
			}
			if ( option.empty ) {
				return false;
			}
			return true;
		};

AbstractChosen.prototype.search_results_touchstart = function ( evt ) {
			this.touch_started = true;
			return this.search_results_mouseover( evt );
		};

AbstractChosen.prototype.search_results_touchmove = function ( evt ) {
			this.touch_started = false;
			return this.search_results_mouseout( evt );
		};

AbstractChosen.prototype.search_results_touchend = function ( evt ) {
			if ( this.touch_started ) {
				return this.search_results_mouseup( evt );
			}
		};

AbstractChosen.prototype.outerHTML = function ( element ) {
			let tmp;
			if ( element.outerHTML ) {
				return element.outerHTML;
			}
			tmp = document.createElement( 'div' );
			tmp.appendChild( element );
			return tmp.innerHTML;
		};

AbstractChosen.browser_is_supported = function () {
			if ( window.navigator.appName === 'Microsoft Internet Explorer' ) {
				return document.documentMode >= 8;
			}
			if ( /iP(od|hone)/i.test( window.navigator.userAgent ) ) {
				return false;
			}
			if ( /Android/i.test( window.navigator.userAgent ) ) {
				if ( /Mobile/i.test( window.navigator.userAgent ) ) {
					return false;
				}
			}
			return true;
		};

AbstractChosen.default_multiple_text = 'Select Some Options';

AbstractChosen.default_single_text = 'Select an Option';

AbstractChosen.default_no_result_text = 'No results match';

return AbstractChosen;
	} )();

$ = jQuery;

$.fn.extend( {
		chosen( options ) {
			if ( ! AbstractChosen.browser_is_supported() ) {
				return this;
			}
			return this.each( function ( input_field ) {
				let $this, chosen;
				$this = $( this );
				chosen = $this.data( 'chosen' );
				if ( options === 'destroy' && chosen instanceof Chosen ) {
					chosen.destroy();
				} else if ( ! ( chosen instanceof Chosen ) ) {
					$this.data( 'chosen', new Chosen( this, options ) );
				}
			} );
		},
	} );

Chosen = ( function ( _super ) {
		__extends( Chosen, _super );

function Chosen() {
			_ref = Chosen.__super__.constructor.apply( this, arguments );
			return _ref;
		}

Chosen.prototype.setup = function () {
			this.form_field_jq = $( this.form_field );
			this.current_selectedIndex = this.form_field.selectedIndex;
			return ( this.is_rtl = this.form_field_jq.hasClass(
				'chosen-rtl'
			) );
		};

Chosen.prototype.set_up_html = function () {
			let container_classes, container_props;
			container_classes = [ 'chosen-container' ];
			container_classes.push(
				'chosen-container-' + ( this.is_multiple ? 'multi' : 'single' )
			);
			if ( this.inherit_select_classes && this.form_field.className ) {
				container_classes.push( this.form_field.className );
			}
			if ( this.is_rtl ) {
				container_classes.push( 'chosen-rtl' );
			}
			container_props = {
				class: container_classes.join( ' ' ),
				style: 'width: ' + this.container_width() + ';',
				title: this.form_field.title,
			};
			if ( this.form_field.id.length ) {
				container_props.id =
					this.form_field.id.replace( /[^\w]/g, '_' ) + '_chosen';
			}
			this.container = $( '<div />', container_props );
			if ( this.is_multiple ) {
				this.container.html(
					'<ul class="chosen-choices"><li class="search-field"><input type="text" value="' +
						this.default_text +
						'" class="default" autocomplete="off" style="width:25px;" /></li></ul><div class="chosen-drop"><ul class="chosen-results"></ul></div>'
				);
			} else {
				this.container.html(
					'<a class="chosen-single chosen-default" tabindex="-1"><span>' +
						this.default_text +
						'</span><div><b></b></div></a><div class="chosen-drop"><div class="chosen-search"><input type="text" autocomplete="off" /></div><ul class="chosen-results"></ul></div>'
				);
			}
			this.form_field_jq.hide().after( this.container );
			this.dropdown = this.container.find( 'div.chosen-drop' ).first();
			this.search_field = this.container.find( 'input' ).first();
			this.search_results = this.container
				.find( 'ul.chosen-results' )
				.first();
			this.search_field_scale();
			this.search_no_results = this.container
				.find( 'li.no-results' )
				.first();
			if ( this.is_multiple ) {
				this.search_choices = this.container
					.find( 'ul.chosen-choices' )
					.first();
				this.search_container = this.container
					.find( 'li.search-field' )
					.first();
			} else {
				this.search_container = this.container
					.find( 'div.chosen-search' )
					.first();
				this.selected_item = this.container
					.find( '.chosen-single' )
					.first();
			}
			this.results_build();
			this.set_tab_index();
			this.set_label_behavior();
			return this.form_field_jq.trigger( 'chosen:ready', {
				chosen: this,
			} );
		};

Chosen.prototype.register_observers = function () {
			const _this = this;
			this.container.bind( 'touchstart.chosen', function ( evt ) {
				_this.container_mousedown( evt );
			} );
			this.container.bind( 'touchend.chosen', function ( evt ) {
				_this.container_mouseup( evt );
			} );
			this.container.bind( 'mousedown.chosen', function ( evt ) {
				_this.container_mousedown( evt );
			} );
			this.container.bind( 'mouseup.chosen', function ( evt ) {
				_this.container_mouseup( evt );
			} );
			this.container.bind( 'mouseenter.chosen', function ( evt ) {
				_this.mouse_enter( evt );
			} );
			this.container.bind( 'mouseleave.chosen', function ( evt ) {
				_this.mouse_leave( evt );
			} );
			this.search_results.bind( 'mouseup.chosen', function ( evt ) {
				_this.search_results_mouseup( evt );
			} );
			this.search_results.bind( 'mouseover.chosen', function ( evt ) {
				_this.search_results_mouseover( evt );
			} );
			this.search_results.bind( 'mouseout.chosen', function ( evt ) {
				_this.search_results_mouseout( evt );
			} );
			this.search_results.bind(
				'mousewheel.chosen DOMMouseScroll.chosen',
				function ( evt ) {
					_this.search_results_mousewheel( evt );
				}
			);
			this.search_results.bind( 'touchstart.chosen', function ( evt ) {
				_this.search_results_touchstart( evt );
			} );
			this.search_results.bind( 'touchmove.chosen', function ( evt ) {
				_this.search_results_touchmove( evt );
			} );
			this.search_results.bind( 'touchend.chosen', function ( evt ) {
				_this.search_results_touchend( evt );
			} );
			this.form_field_jq.bind( 'chosen:updated.chosen', function ( evt ) {
				_this.results_update_field( evt );
			} );
			this.form_field_jq.bind(
				'chosen:activate.chosen',
				function ( evt ) {
					_this.activate_field( evt );
				}
			);
			this.form_field_jq.bind( 'chosen:open.chosen', function ( evt ) {
				_this.container_mousedown( evt );
			} );
			this.form_field_jq.bind( 'chosen:close.chosen', function ( evt ) {
				_this.input_blur( evt );
			} );
			this.search_field.bind( 'blur.chosen', function ( evt ) {
				_this.input_blur( evt );
			} );
			this.search_field.bind( 'keyup.chosen', function ( evt ) {
				_this.keyup_checker( evt );
			} );
			this.search_field.bind( 'keydown.chosen', function ( evt ) {
				_this.keydown_checker( evt );
			} );
			this.search_field.bind( 'focus.chosen', function ( evt ) {
				_this.input_focus( evt );
			} );
			this.search_field.bind( 'cut.chosen', function ( evt ) {
				_this.clipboard_event_checker( evt );
			} );
			this.search_field.bind( 'paste.chosen', function ( evt ) {
				_this.clipboard_event_checker( evt );
			} );
			if ( this.is_multiple ) {
				return this.search_choices.bind(
					'click.chosen',
					function ( evt ) {
						_this.choices_click( evt );
					}
				);
			}
			return this.container.bind( 'click.chosen', function ( evt ) {
				evt.preventDefault();
			} );
		};

Chosen.prototype.destroy = function () {
			$( this.container[ 0 ].ownerDocument ).unbind(
				'click.chosen',
				this.click_test_action
			);
			if ( this.search_field[ 0 ].tabIndex ) {
				this.form_field_jq[ 0 ].tabIndex = this.search_field[ 0 ].tabIndex;
			}
			this.container.remove();
			this.form_field_jq.removeData( 'chosen' );
			return this.form_field_jq.show();
		};

Chosen.prototype.search_field_disabled = function () {
			this.is_disabled = this.form_field_jq[ 0 ].disabled;
			if ( this.is_disabled ) {
				this.container.addClass( 'chosen-disabled' );
				this.search_field[ 0 ].disabled = true;
				if ( ! this.is_multiple ) {
					this.selected_item.unbind(
						'focus.chosen',
						this.activate_action
					);
				}
				return this.close_field();
			}
			this.container.removeClass( 'chosen-disabled' );
			this.search_field[ 0 ].disabled = false;
			if ( ! this.is_multiple ) {
				return this.selected_item.bind(
					'focus.chosen',
					this.activate_action
				);
			}
		};

Chosen.prototype.container_mousedown = function ( evt ) {
			if ( ! this.is_disabled ) {
				if (
					evt &&
					evt.type === 'mousedown' &&
					! this.results_showing
				) {
					evt.preventDefault();
				}
				if (
					! (
						evt != null &&
						$( evt.target ).hasClass( 'search-choice-close' )
					)
				) {
					if ( ! this.active_field ) {
						if ( this.is_multiple ) {
							this.search_field.val( '' );
						}
						$( this.container[ 0 ].ownerDocument ).bind(
							'click.chosen',
							this.click_test_action
						);
						this.results_show();
					} else if (
						! this.is_multiple &&
						evt &&
						( $( evt.target )[ 0 ] === this.selected_item[ 0 ] ||
							$( evt.target ).parents( 'a.chosen-single' )
								.length )
					) {
						evt.preventDefault();
						this.results_toggle();
					}
					return this.activate_field();
				}
			}
		};

Chosen.prototype.container_mouseup = function ( evt ) {
			if ( evt.target.nodeName === 'ABBR' && ! this.is_disabled ) {
				return this.results_reset( evt );
			}
		};

Chosen.prototype.search_results_mousewheel = function ( evt ) {
			let delta;
			if ( evt.originalEvent ) {
				delta =
					evt.originalEvent.deltaY ||
					-evt.originalEvent.wheelDelta ||
					evt.originalEvent.detail;
			}
			if ( delta != null ) {
				evt.preventDefault();
				if ( evt.type === 'DOMMouseScroll' ) {
					delta = delta * 40;
				}
				return this.search_results.scrollTop(
					delta + this.search_results.scrollTop()
				);
			}
		};

Chosen.prototype.blur_test = function ( evt ) {
			if (
				! this.active_field &&
				this.container.hasClass( 'chosen-container-active' )
			) {
				return this.close_field();
			}
		};

Chosen.prototype.close_field = function () {
			$( this.container[ 0 ].ownerDocument ).unbind(
				'click.chosen',
				this.click_test_action
			);
			this.active_field = false;
			this.results_hide();
			this.container.removeClass( 'chosen-container-active' );
			this.clear_backstroke();
			this.show_search_field_default();
			return this.search_field_scale();
		};

Chosen.prototype.activate_field = function () {
			this.container.addClass( 'chosen-container-active' );
			this.active_field = true;
			this.search_field.val( this.search_field.val() );
			return this.search_field.focus();
		};

Chosen.prototype.test_active_click = function ( evt ) {
			let active_container;
			active_container = $( evt.target ).closest( '.chosen-container' );
			if (
				active_container.length &&
				this.container[ 0 ] === active_container[ 0 ]
			) {
				return ( this.active_field = true );
			}
			return this.close_field();
		};

Chosen.prototype.results_build = function () {
			this.parsing = true;
			this.selected_option_count = null;
			this.results_data = SelectParser.select_to_array( this.form_field );
			if ( this.is_multiple ) {
				this.search_choices.find( 'li.search-choice' ).remove();
			} else if ( ! this.is_multiple ) {
				this.single_set_selected_text();
				if (
					this.disable_search ||
					this.form_field.options.length <=
						this.disable_search_threshold
				) {
					this.search_field[ 0 ].readOnly = true;
					this.container.addClass(
						'chosen-container-single-nosearch'
					);
				} else {
					this.search_field[ 0 ].readOnly = false;
					this.container.removeClass(
						'chosen-container-single-nosearch'
					);
				}
			}
			this.update_results_content(
				this.results_option_build( {
					first: true,
				} )
			);
			this.search_field_disabled();
			this.show_search_field_default();
			this.search_field_scale();
			return ( this.parsing = false );
		};

Chosen.prototype.result_do_highlight = function ( el ) {
			let high_bottom, high_top, maxHeight, visible_bottom, visible_top;
			if ( el.length ) {
				this.result_clear_highlight();
				this.result_highlight = el;
				this.result_highlight.addClass( 'highlighted' );
				maxHeight = parseInt(
					this.search_results.css( 'maxHeight' ),
					10
				);
				visible_top = this.search_results.scrollTop();
				visible_bottom = maxHeight + visible_top;
				high_top =
					this.result_highlight.position().top +
					this.search_results.scrollTop();
				high_bottom = high_top + this.result_highlight.outerHeight();
				if ( high_bottom >= visible_bottom ) {
					return this.search_results.scrollTop(
						high_bottom - maxHeight > 0
							? high_bottom - maxHeight
							: 0
					);
				} else if ( high_top < visible_top ) {
					return this.search_results.scrollTop( high_top );
				}
			}
		};

Chosen.prototype.result_clear_highlight = function () {
			if ( this.result_highlight ) {
				this.result_highlight.removeClass( 'highlighted' );
			}
			return ( this.result_highlight = null );
		};

Chosen.prototype.results_show = function () {
			if (
				this.is_multiple &&
				this.max_selected_options <= this.choices_count()
			) {
				this.form_field_jq.trigger( 'chosen:maxselected', {
					chosen: this,
				} );
				return false;
			}
			this.container.addClass( 'chosen-with-drop' );
			this.results_showing = true;
			this.search_field.focus();
			this.search_field.val( this.search_field.val() );
			this.winnow_results();
			return this.form_field_jq.trigger( 'chosen:showing_dropdown', {
				chosen: this,
			} );
		};

Chosen.prototype.update_results_content = function ( content ) {
			return this.search_results.html( content );
		};

Chosen.prototype.results_hide = function () {
			if ( this.results_showing ) {
				this.result_clear_highlight();
				this.container.removeClass( 'chosen-with-drop' );
				this.form_field_jq.trigger( 'chosen:hiding_dropdown', {
					chosen: this,
				} );
			}
			return ( this.results_showing = false );
		};

Chosen.prototype.set_tab_index = function ( el ) {
			let ti;
			if ( this.form_field.tabIndex ) {
				ti = this.form_field.tabIndex;
				this.form_field.tabIndex = -1;
				return ( this.search_field[ 0 ].tabIndex = ti );
			}
		};

Chosen.prototype.set_label_behavior = function () {
			const _this = this;
			this.form_field_label = this.form_field_jq.parents( 'label' );
			if ( ! this.form_field_label.length && this.form_field.id.length ) {
				this.form_field_label = $(
					"label[for='" + this.form_field.id + "']"
				);
			}
			if ( this.form_field_label.length > 0 ) {
				return this.form_field_label.bind(
					'click.chosen',
					function ( evt ) {
						if ( _this.is_multiple ) {
							return _this.container_mousedown( evt );
						}
						return _this.activate_field();
					}
				);
			}
		};

Chosen.prototype.show_search_field_default = function () {
			if (
				this.is_multiple &&
				this.choices_count() < 1 &&
				! this.active_field
			) {
				this.search_field.val( this.default_text );
				return this.search_field.addClass( 'default' );
			}
			this.search_field.val( '' );
			return this.search_field.removeClass( 'default' );
		};

Chosen.prototype.search_results_mouseup = function ( evt ) {
			let target;
			target = $( evt.target ).hasClass( 'active-result' )
				? $( evt.target )
				: $( evt.target ).parents( '.active-result' ).first();
			if ( target.length ) {
				this.result_highlight = target;
				this.result_select( evt );
				return this.search_field.focus();
			}
		};

Chosen.prototype.search_results_mouseover = function ( evt ) {
			let target;
			target = $( evt.target ).hasClass( 'active-result' )
				? $( evt.target )
				: $( evt.target ).parents( '.active-result' ).first();
			if ( target ) {
				return this.result_do_highlight( target );
			}
		};

Chosen.prototype.search_results_mouseout = function ( evt ) {
			if (
				$( evt.target ).hasClass(
					'active-result' ||
						$( evt.target ).parents( '.active-result' ).first()
				)
			) {
				return this.result_clear_highlight();
			}
		};

Chosen.prototype.choice_build = function ( item ) {
			let choice,
				close_link,
				_this = this;
			choice = $( '<li />', {
				class: 'search-choice',
			} ).html( '<span>' + item.html + '</span>' );
			if ( item.disabled ) {
				choice.addClass( 'search-choice-disabled' );
			} else {
				close_link = $( '<a />', {
					class: 'search-choice-close',
					'data-option-array-index': item.array_index,
				} );
				close_link.bind( 'click.chosen', function ( evt ) {
					return _this.choice_destroy_link_click( evt );
				} );
				choice.append( close_link );
			}
			return this.search_container.before( choice );
		};

Chosen.prototype.choice_destroy_link_click = function ( evt ) {
			evt.preventDefault();
			evt.stopPropagation();
			if ( ! this.is_disabled ) {
				return this.choice_destroy( $( evt.target ) );
			}
		};

Chosen.prototype.choice_destroy = function ( link ) {
			if (
				this.result_deselect(
					link[ 0 ].getAttribute( 'data-option-array-index' )
				)
			) {
				this.show_search_field_default();
				if (
					this.is_multiple &&
					this.choices_count() > 0 &&
					this.search_field.val().length < 1
				) {
					this.results_hide();
				}
				link.parents( 'li' ).first().remove();
				return this.search_field_scale();
			}
		};

Chosen.prototype.results_reset = function () {
			this.reset_single_select_options();
			this.form_field.options[ 0 ].selected = true;
			this.single_set_selected_text();
			this.show_search_field_default();
			this.results_reset_cleanup();
			this.form_field_jq.trigger( 'change' );
			if ( this.active_field ) {
				return this.results_hide();
			}
		};

Chosen.prototype.results_reset_cleanup = function () {
			this.current_selectedIndex = this.form_field.selectedIndex;
			return this.selected_item.find( 'abbr' ).remove();
		};

Chosen.prototype.result_select = function ( evt ) {
			let high, item;
			if ( this.result_highlight ) {
				high = this.result_highlight;
				this.result_clear_highlight();
				if (
					this.is_multiple &&
					this.max_selected_options <= this.choices_count()
				) {
					this.form_field_jq.trigger( 'chosen:maxselected', {
						chosen: this,
					} );
					return false;
				}
				if ( this.is_multiple ) {
					high.removeClass( 'active-result' );
				} else {
					this.reset_single_select_options();
				}
				item = this.results_data[
					high[ 0 ].getAttribute( 'data-option-array-index' )
				];
				item.selected = true;
				this.form_field.options[ item.options_index ].selected = true;
				this.selected_option_count = null;
				if ( this.is_multiple ) {
					this.choice_build( item );
				} else {
					this.single_set_selected_text( item.text );
				}
				if (
					! ( ( evt.metaKey || evt.ctrlKey ) && this.is_multiple )
				) {
					this.results_hide();
				}
				this.search_field.val( '' );
				if (
					this.is_multiple ||
					this.form_field.selectedIndex !== this.current_selectedIndex
				) {
					this.form_field_jq.trigger( 'change', {
						selected: this.form_field.options[ item.options_index ]
							.value,
					} );
				}
				this.current_selectedIndex = this.form_field.selectedIndex;
				return this.search_field_scale();
			}
		};

Chosen.prototype.single_set_selected_text = function ( text ) {
			if ( text == null ) {
				text = this.default_text;
			}
			if ( text === this.default_text ) {
				this.selected_item.addClass( 'chosen-default' );
			} else {
				this.single_deselect_control_build();
				this.selected_item.removeClass( 'chosen-default' );
			}
			return this.selected_item.find( 'span' ).text( text );
		};

Chosen.prototype.result_deselect = function ( pos ) {
			let result_data;
			result_data = this.results_data[ pos ];
			if (
				! this.form_field.options[ result_data.options_index ].disabled
			) {
				result_data.selected = false;
				this.form_field.options[
					result_data.options_index
				].selected = false;
				this.selected_option_count = null;
				this.result_clear_highlight();
				if ( this.results_showing ) {
					this.winnow_results();
				}
				this.form_field_jq.trigger( 'change', {
					deselected: this.form_field.options[
						result_data.options_index
					].value,
				} );
				this.search_field_scale();
				return true;
			}
			return false;
		};

Chosen.prototype.single_deselect_control_build = function () {
			if ( ! this.allow_single_deselect ) {
				return;
			}
			if ( ! this.selected_item.find( 'abbr' ).length ) {
				this.selected_item
					.find( 'span' )
					.first()
					.after( '<abbr class="search-choice-close"></abbr>' );
			}
			return this.selected_item.addClass( 'chosen-single-with-deselect' );
		};

Chosen.prototype.get_search_text = function () {
			if ( this.search_field.val() === this.default_text ) {
				return '';
			}
			return $( '<div/>' )
				.text( $.trim( this.search_field.val() ) )
				.html();
		};

Chosen.prototype.winnow_results_set_highlight = function () {
			let do_high, selected_results;
			selected_results = ! this.is_multiple
				? this.search_results.find( '.result-selected.active-result' )
				: [];
			do_high = selected_results.length
				? selected_results.first()
				: this.search_results.find( '.active-result' ).first();
			if ( do_high != null ) {
				return this.result_do_highlight( do_high );
			}
		};

Chosen.prototype.no_results = function ( terms ) {
			let no_results_html;
			no_results_html = $(
				'<li class="no-results">' +
					this.results_none_found +
					' "<span></span>"</li>'
			);
			no_results_html.find( 'span' ).first().html( terms );
			this.search_results.append( no_results_html );
			return this.form_field_jq.trigger( 'chosen:no_results', {
				chosen: this,
			} );
		};

Chosen.prototype.no_results_clear = function () {
			return this.search_results.find( '.no-results' ).remove();
		};

Chosen.prototype.keydown_arrow = function () {
			let next_sib;
			if ( this.results_showing && this.result_highlight ) {
				next_sib = this.result_highlight
					.nextAll( 'li.active-result' )
					.first();
				if ( next_sib ) {
					return this.result_do_highlight( next_sib );
				}
			} else {
				return this.results_show();
			}
		};

Chosen.prototype.keyup_arrow = function () {
			let prev_sibs;
			if ( ! this.results_showing && ! this.is_multiple ) {
				return this.results_show();
			} else if ( this.result_highlight ) {
				prev_sibs = this.result_highlight.prevAll( 'li.active-result' );
				if ( prev_sibs.length ) {
					return this.result_do_highlight( prev_sibs.first() );
				}
				if ( this.choices_count() > 0 ) {
					this.results_hide();
				}
				return this.result_clear_highlight();
			}
		};

Chosen.prototype.keydown_backstroke = function () {
			let next_available_destroy;
			if ( this.pending_backstroke ) {
				this.choice_destroy(
					this.pending_backstroke.find( 'a' ).first()
				);
				return this.clear_backstroke();
			}
			next_available_destroy = this.search_container
				.siblings( 'li.search-choice' )
				.last();
			if (
				next_available_destroy.length &&
				! next_available_destroy.hasClass( 'search-choice-disabled' )
			) {
				this.pending_backstroke = next_available_destroy;
				if ( this.single_backstroke_delete ) {
					return this.keydown_backstroke();
				}
				return this.pending_backstroke.addClass(
					'search-choice-focus'
				);
			}
		};

Chosen.prototype.clear_backstroke = function () {
			if ( this.pending_backstroke ) {
				this.pending_backstroke.removeClass( 'search-choice-focus' );
			}
			return ( this.pending_backstroke = null );
		};

Chosen.prototype.keydown_checker = function ( evt ) {
			let stroke, _ref1;
			stroke = ( _ref1 = evt.which ) != null ? _ref1 : evt.keyCode;
			this.search_field_scale();
			if ( stroke !== 8 && this.pending_backstroke ) {
				this.clear_backstroke();
			}
			switch ( stroke ) {
				case 8:
					this.backstroke_length = this.search_field.val().length;
					break;
				case 9:
					if ( this.results_showing && ! this.is_multiple ) {
						this.result_select( evt );
					}
					this.mouse_on_container = false;
					break;
				case 13:
					if ( this.results_showing ) {
						evt.preventDefault();
					}
					break;
				case 32:
					if ( this.disable_search ) {
						evt.preventDefault();
					}
					break;
				case 38:
					evt.preventDefault();
					this.keyup_arrow();
					break;
				case 40:
					evt.preventDefault();
					this.keydown_arrow();
					break;
			}
		};

Chosen.prototype.search_field_scale = function () {
			let div, f_width, h, style, style_block, styles, w, _i, _len;
			if ( this.is_multiple ) {
				h = 0;
				w = 0;
				style_block =
					'position:absolute; left: -1000px; top: -1000px; display:none;';
				styles = [
					'font-size',
					'font-style',
					'font-weight',
					'font-family',
					'line-height',
					'text-transform',
					'letter-spacing',
				];
				for ( _i = 0, _len = styles.length; _i < _len; _i++ ) {
					style = styles[ _i ];
					style_block +=
						style + ':' + this.search_field.css( style ) + ';';
				}
				div = $( '<div />', {
					style: style_block,
				} );
				div.text( this.search_field.val() );
				$( 'body' ).append( div );
				w = div.width() + 25;
				div.remove();
				f_width = this.container.outerWidth();
				if ( w > f_width - 10 ) {
					w = f_width - 10;
				}
				return this.search_field.css( {
					width: w + 'px',
				} );
			}
		};

return Chosen;
	} )( AbstractChosen );
}.call( this ) );