content: import React from 'react';
  import ReactDOM from 'react-dom';
  import Input from 'react-input-autosize';
  import classNames from 'classnames';
  
  import stripDiacritics from './utils/stripDiacritics';
  
  import Async from './Async';
  import Option from './Option';
  import Value from './Value';
  
  function stringifyValue (value) {
  	if (typeof value === 'object') {
  		return JSON.stringify(value);
  	} else {
  		return value;
  	}
  }
  
  const Select = React.createClass({
  
  	statics: { Async },
  
  	displayName: 'Select',
  
  	propTypes: {
  		addLabelText: React.PropTypes.string,       // placeholder displayed when you want to add a label on a multi-value input
  		allowCreate: React.PropTypes.bool,          // whether to allow creation of new entries
  		autofocus: React.PropTypes.bool,            // autofocus the component on mount
  		backspaceRemoves: React.PropTypes.bool,     // whether backspace removes an item if there is no text input
  		className: React.PropTypes.string,          // className for the outer element
  		clearAllText: React.PropTypes.oneOfType([
  			React.PropTypes.string,
  			React.PropTypes.node
  		]),                                         // title for the "clear" control when multi: true
  		clearValueText: React.PropTypes.oneOfType([
  			React.PropTypes.string,
  			React.PropTypes.node
  		]),                                         // title for the "clear" control
  		clearable: React.PropTypes.bool,            // should it be possible to reset value
  		delimiter: React.PropTypes.string,          // delimiter to use to join multiple values for the hidden field value
  		disabled: React.PropTypes.bool,             // whether the Select is disabled or not
  		escapeClearsValue: React.PropTypes.bool,    // whether escape clears the value when the menu is closed
  		filterOption: React.PropTypes.func,         // method to filter a single option (option, filterString)
  		filterOptions: React.PropTypes.any,         // boolean to enable default filtering or function to filter the options array ([options], filterString, [values])
  		ignoreAccents: React.PropTypes.bool,        // whether to strip diacritics when filtering
  		ignoreCase: React.PropTypes.bool,           // whether to perform case-insensitive filtering
  		inputProps: React.PropTypes.object,         // custom attributes for the Input
  		isLoading: React.PropTypes.bool,            // whether the Select is loading externally or not (such as options being loaded)
  		labelKey: React.PropTypes.string,           // path of the label value in option objects
  		matchPos: React.PropTypes.string,           // (any|start) match the start or entire string when filtering
  		matchProp: React.PropTypes.string,          // (any|label|value) which option property to filter on
  		scrollMenuIntoView: React.PropTypes.bool,   // boolean to enable the viewport to shift so that the full menu fully visible when engaged
  		menuBuffer: React.PropTypes.number,         // optional buffer (in px) between the bottom of the viewport and the bottom of the menu
  		menuStyle: React.PropTypes.object,          // optional style to apply to the menu
  		menuContainerStyle: React.PropTypes.object, // optional style to apply to the menu container
  		multi: React.PropTypes.bool,                // multi-value input
  		name: React.PropTypes.string,               // generates a hidden <input /> tag with this field name for html forms
  		newOptionCreator: React.PropTypes.func,     // factory to create new options when allowCreate set
  		noResultsText: React.PropTypes.oneOfType([
  			React.PropTypes.string,
  			React.PropTypes.node
  		]),                                         // placeholder displayed when there are no matching search results
  		onBlur: React.PropTypes.func,               // onBlur handler: function (event) {}
  		onChange: React.PropTypes.func,             // onChange handler: function (newValue) {}
  		onFocus: React.PropTypes.func,              // onFocus handler: function (event) {}
  		onInputChange: React.PropTypes.func,        // onInputChange handler: function (inputValue) {}
  		onValueClick: React.PropTypes.func,         // onClick handler for value labels: function (value, event) {}
  		onMenuScrollToBottom: React.PropTypes.func, // fires when the menu is scrolled to the bottom; can be used to paginate options
  		optionComponent: React.PropTypes.func,      // option component to render in dropdown
  		optionRenderer: React.PropTypes.func,       // optionRenderer: function (option) {}
  		options: React.PropTypes.array,             // array of options
  		placeholder: React.PropTypes.oneOfType([
  			React.PropTypes.string,
  			React.PropTypes.node
  		]),                                         // field placeholder, displayed when there's no value
  		searchable: React.PropTypes.bool,           // whether to enable searching feature or not
  		simpleValue: React.PropTypes.bool,          // pass the value to onChange as a simple value (legacy pre 1.0 mode), defaults to false
  		style: React.PropTypes.object,              // optional style to apply to the control
  		tabIndex: React.PropTypes.string,           // optional tab index of the control
  		value: React.PropTypes.any,                 // initial field value
  		valueComponent: React.PropTypes.func,       // value component to render
  		valueKey: React.PropTypes.string,           // path of the label value in option objects
  		valueRenderer: React.PropTypes.func,        // valueRenderer: function (option) {}
  		wrapperStyle: React.PropTypes.object,       // optional style to apply to the component wrapper
  	},
  
  	getDefaultProps () {
  		return {
  			addLabelText: 'Add "{label}"?',
  			allowCreate: false,
  			backspaceRemoves: true,
  			clearAllText: 'Clear all',
  			clearValueText: 'Clear value',
  			clearable: true,
  			delimiter: ',',
  			disabled: false,
  			escapeClearsValue: true,
  			filterOptions: true,
  			ignoreAccents: true,
  			ignoreCase: true,
  			inputProps: {},
  			isLoading: false,
  			labelKey: 'label',
  			matchPos: 'any',
  			matchProp: 'any',
  			scrollMenuIntoView: true,
  			menuBuffer: 0,
  			multi: false,
  			noResultsText: 'No results found',
  			optionComponent: Option,
  			placeholder: 'Select...',
  			searchable: true,
  			simpleValue: false,
  			valueComponent: Value,
  			valueKey: 'value',
  		};
  	},
  
  	getInitialState () {
  		return {
  			inputValue: '',
  			isFocused: false,
  			isLoading: false,
  			isOpen: false,
  			isPseudoFocused: false,
  		};
  	},
  
  	componentDidMount () {
  		if (this.props.autofocus) {
  			this.focus();
  		}
  	},
  
  	componentDidUpdate (prevProps, prevState) {
  		if (prevState.inputValue !== this.state.inputValue && this.props.onInputChange) {
  			this.props.onInputChange(this.state.inputValue);
  		}
  		if (this._scrollToFocusedOptionOnUpdate && this.refs.focused && this.refs.menu) {
  			this._scrollToFocusedOptionOnUpdate = false;
  			var focusedDOM = ReactDOM.findDOMNode(this.refs.focused);
  			var menuDOM = ReactDOM.findDOMNode(this.refs.menu);
  			var focusedRect = focusedDOM.getBoundingClientRect();
  			var menuRect = menuDOM.getBoundingClientRect();
  			if (focusedRect.bottom > menuRect.bottom || focusedRect.top < menuRect.top) {
  				menuDOM.scrollTop = (focusedDOM.offsetTop + focusedDOM.clientHeight - menuDOM.offsetHeight);
  			}
  		}
  		if (this.props.scrollMenuIntoView && this.refs.menuContainer) {
  			var menuContainerRect = this.refs.menuContainer.getBoundingClientRect();
  			if (window.innerHeight < menuContainerRect.bottom + this.props.menuBuffer) {
  				window.scrollTo(0, window.scrollY + menuContainerRect.bottom + this.props.menuBuffer - window.innerHeight);
  			}
  		}
  		if (prevProps.disabled !== this.props.disabled) {
  			this.setState({ isFocused: false });
  		}
  	},
  
  	focus () {
  		if (!this.refs.input) return;
  		this.refs.input.focus();
  	},
  
  	handleMouseDown (event) {
  		// if the event was triggered by a mousedown and not the primary
  		// button, or if the component is disabled, ignore it.
  		if (this.props.disabled || (event.type === 'mousedown' && event.button !== 0)) {
  			return;
  		}
  
  		// prevent default event handlers
  		event.stopPropagation();
  		event.preventDefault();
  
  		// for the non-searchable select, toggle the menu
  		if (!this.props.searchable) {
  			this.focus();
  			return this.setState({
  				isOpen: !this.state.isOpen,
  			});
  		}
  
  		if (this.state.isFocused) {
  			// if the input is focused, ensure the menu is open
  			this.setState({
  				isOpen: true,
  				isPseudoFocused: false,
  			});
  		} else {
  			// otherwise, focus the input and open the menu
  			this._openAfterFocus = true;
  			this.focus();
  		}
  	},
  
  	handleMouseDownOnArrow (event) {
  		// if the event was triggered by a mousedown and not the primary
  		// button, or if the component is disabled, ignore it.
  		if (this.props.disabled || (event.type === 'mousedown' && event.button !== 0)) {
  			return;
  		}
  		// If the menu isn't open, let the event bubble to the main handleMouseDown
  		if (!this.state.isOpen) {
  			return;
  		}
  		// prevent default event handlers
  		event.stopPropagation();
  		event.preventDefault();
  		// close the menu
  		this.closeMenu();
  	},
  
  	closeMenu () {
  		this.setState({
  			isOpen: false,
  			isPseudoFocused: this.state.isFocused && !this.props.multi,
  			inputValue: '',
  		});
  	},
  
  	handleInputFocus (event) {
  		var isOpen = this.state.isOpen || this._openAfterFocus;
  		if (this.props.onFocus) {
  			this.props.onFocus(event);
  		}
  		this.setState({
  			isFocused: true,
  			isOpen: isOpen
  		});
  		this._openAfterFocus = false;
  	},
  
  	handleInputBlur (event) {
   		if (this.refs.menu && document.activeElement.isEqualNode(this.refs.menu)) {
   			return;
   		}
  
  		if (this.props.onBlur) {
  			this.props.onBlur(event);
  		}
  		this.setState({
  			inputValue: '',
  			isFocused: false,
  			isOpen: false,
  			isPseudoFocused: false,
  		});
  	},
  
  	handleInputChange (event) {
  		this.setState({
  			isOpen: true,
  			isPseudoFocused: false,
  			inputValue: event.target.value,
  		});
  	},
  
  	handleKeyDown (event) {
  		if (this.props.disabled) return;
  		switch (event.keyCode) {
  			case 8: // backspace
  				if (!this.state.inputValue && this.props.backspaceRemoves) {
  					event.preventDefault();
  					this.popValue();
  				}
  			return;
  			case 9: // tab
  				if (event.shiftKey || !this.state.isOpen) {
  					return;
  				}
  				this.selectFocusedOption();
  			break;
  			case 13: // enter
  				if (!this.state.isOpen) return;
  				this.selectFocusedOption();
  			break;
  			case 27: // escape
  				if (this.state.isOpen) {
  					this.closeMenu();
  				} else if (this.props.clearable && this.props.escapeClearsValue) {
  					this.clearValue(event);
  				}
  			break;
  			case 38: // up
  				this.focusPreviousOption();
  			break;
  			case 40: // down
  				this.focusNextOption();
  			break;
  			// case 188: // ,
  			// 	if (this.props.allowCreate && this.props.multi) {
  			// 		event.preventDefault();
  			// 		event.stopPropagation();
  			// 		this.selectFocusedOption();
  			// 	} else {
  			// 		return;
  			// 	}
  			// break;
  			default: return;
  		}
  		event.preventDefault();
  	},
  
  	handleValueClick (option, event) {
  		if (!this.props.onValueClick) return;
  		this.props.onValueClick(option, event);
  	},
  
  	handleMenuScroll (event) {
  		if (!this.props.onMenuScrollToBottom) return;
  		let { target } = event;
  		if (target.scrollHeight > target.offsetHeight && !(target.scrollHeight - target.offsetHeight - target.scrollTop)) {
  			this.props.onMenuScrollToBottom();
  		}
  	},
  
  	getOptionLabel (op) {
  		return op[this.props.labelKey];
  	},
  
  	getValueArray () {
  		let value = this.props.value;
  		if (this.props.multi) {
  			if (typeof value === 'string') value = value.split(this.props.delimiter);
  			if (!Array.isArray(value)) {
  				if (value === null || value === undefined) return [];
  				value = [value];
  			}
  			return value.map(this.expandValue).filter(i => i);
  		}
  		var expandedValue = this.expandValue(value);
  		return expandedValue ? [expandedValue] : [];
  	},
  
  	expandValue (value) {
  		if (typeof value !== 'string' && typeof value !== 'number') return value;
  		let { options, valueKey } = this.props;
  		if (!options) return;
  		for (var i = 0; i < options.length; i++) {
  			if (options[i][valueKey] === value) return options[i];
  		}
  	},
  
  	setValue (value) {
  		if (!this.props.onChange) return;
  		if (this.props.simpleValue && value) {
  			value = this.props.multi ? value.map(i => i[this.props.valueKey]).join(this.props.delimiter) : value[this.props.valueKey];
  		}
  		this.props.onChange(value);
  	},
  
  	selectValue (value) {
  		if (this.props.multi) {
  			this.addValue(value);
  			this.setState({
  				inputValue: '',
  			});
  		} else {
  			this.setValue(value);
  			this.setState({
  				isOpen: false,
  				inputValue: '',
  				isPseudoFocused: this.state.isFocused,
  			});
  		}
  	},
  
  	addValue (value) {
  		var valueArray = this.getValueArray();
  		this.setValue(valueArray.concat(value));
  	},
  
  	popValue () {
  		var valueArray = this.getValueArray();
  		if (!valueArray.length) return;
  		if (valueArray[valueArray.length-1].clearableValue === false) return;
  		this.setValue(valueArray.slice(0, valueArray.length - 1));
  	},
  
  	removeValue (value) {
  		var valueArray = this.getValueArray();
  		this.setValue(valueArray.filter(i => i !== value));
  		this.focus();
  	},
  
  	clearValue (event) {
  		// if the event was triggered by a mousedown and not the primary
  		// button, ignore it.
  		if (event && event.type === 'mousedown' && event.button !== 0) {
  			return;
  		}
  		event.stopPropagation();
  		event.preventDefault();
  		this.setValue(null);
  		this.setState({
  			isOpen: false,
  			inputValue: '',
  		}, this.focus);
  	},
  
  	focusOption (option) {
  		this.setState({
  			focusedOption: option
  		});
  	},
  
  	focusNextOption () {
  		this.focusAdjacentOption('next');
  	},
  
  	focusPreviousOption () {
  		this.focusAdjacentOption('previous');
  	},
  
  	focusAdjacentOption (dir) {
  		var options = this._visibleOptions.filter(i => !i.disabled);
  		this._scrollToFocusedOptionOnUpdate = true;
  		if (!this.state.isOpen) {
  			this.setState({
  				isOpen: true,
  				inputValue: '',
  				focusedOption: this._focusedOption || options[dir === 'next' ? 0 : options.length - 1]
  			});
  			return;
  		}
  		if (!options.length) return;
  		var focusedIndex = -1;
  		for (var i = 0; i < options.length; i++) {
  			if (this._focusedOption === options[i]) {
  				focusedIndex = i;
  				break;
  			}
  		}
  		var focusedOption = options[0];
  		if (dir === 'next' && focusedIndex > -1 && focusedIndex < options.length - 1) {
  			focusedOption = options[focusedIndex + 1];
  		} else if (dir === 'previous') {
  			if (focusedIndex > 0) {
  				focusedOption = options[focusedIndex - 1];
  			} else {
  				focusedOption = options[options.length - 1];
  			}
  		}
  		this.setState({
  			focusedOption: focusedOption
  		});
  	},
  
  	selectFocusedOption () {
  		// if (this.props.allowCreate && !this.state.focusedOption) {
  		// 	return this.selectValue(this.state.inputValue);
  		// }
  		if (this._focusedOption) {
  			return this.selectValue(this._focusedOption);
  		}
  	},
  
  	renderLoading () {
  		if (!this.props.isLoading) return;
  		return (
  			<span className="Select-loading-zone" aria-hidden="true">
  				<span className="Select-loading" />
  			</span>
  		);
  	},
  
  	renderValue (valueArray, isOpen) {
  		let renderLabel = this.props.valueRenderer || this.getOptionLabel;
  		let ValueComponent = this.props.valueComponent;
  		if (!valueArray.length) {
  			return !this.state.inputValue ? <div className="Select-placeholder">{this.props.placeholder}</div> : null;
  		}
  		let onClick = this.props.onValueClick ? this.handleValueClick : null;
  		if (this.props.multi) {
  			return valueArray.map((value, i) => {
  				return (
  					<ValueComponent
  						disabled={this.props.disabled || value.clearableValue === false}
  						key={`value-${i}-${value[this.props.valueKey]}`}
  						onClick={onClick}
  						onRemove={this.removeValue}
  						value={value}
  						>
  						{renderLabel(value)}
  					</ValueComponent>
  				);
  			});
  		} else if (!this.state.inputValue) {
  			if (isOpen) onClick = null;
  			return (
  				<ValueComponent
  					disabled={this.props.disabled}
  					onClick={onClick}
  					value={valueArray[0]}
  					>
  					{renderLabel(valueArray[0])}
  				</ValueComponent>
  			);
  		}
  	},
  
  	renderInput (valueArray) {
  		var className = classNames('Select-input', this.props.inputProps.className);
  		if (this.props.disabled || !this.props.searchable) {
  			return (
  				<div
  					{...this.props.inputProps}
  					className={className}
  					tabIndex={this.props.tabIndex || 0}
  					onBlur={this.handleInputBlur}
  					onFocus={this.handleInputFocus}
  					ref="input"
  					style={{ border: 0, width: 1, display:'inline-block' }}/>
  			);
  		}
  		return (
  			<Input
  				{...this.props.inputProps}
  				className={className}
  				tabIndex={this.props.tabIndex}
  				onBlur={this.handleInputBlur}
  				onChange={this.handleInputChange}
  				onFocus={this.handleInputFocus}
  				minWidth="5"
  				ref="input"
  				value={this.state.inputValue}
  			/>
  		);
  	},
  
  	renderClear () {
  		if (!this.props.clearable || !this.props.value || (this.props.multi && !this.props.value.length) || this.props.disabled || this.props.isLoading) return;
  		return (
  			<span className="Select-clear-zone" title={this.props.multi ? this.props.clearAllText : this.props.clearValueText} aria-label={this.props.multi ? this.props.clearAllText : this.props.clearValueText} onMouseDown={this.clearValue} onTouchEnd={this.clearValue}>
  				<span className="Select-clear" dangerouslySetInnerHTML={{ __html: '&times;' }} />
  			</span>
  		);
  	},
  
  	renderArrow () {
  		return (
  			<span className="Select-arrow-zone" onMouseDown={this.handleMouseDownOnArrow}>
  				<span className="Select-arrow" onMouseDown={this.handleMouseDownOnArrow} />
  			</span>
  		);
  	},
  
  	filterOptions (excludeOptions) {
  		var filterValue = this.state.inputValue;
  		var options = this.props.options || [];
  		if (typeof this.props.filterOptions === 'function') {
  			return this.props.filterOptions.call(this, options, filterValue, excludeOptions);
  		} else if (this.props.filterOptions) {
  			if (this.props.ignoreAccents) {
  				filterValue = stripDiacritics(filterValue);
  			}
  			if (this.props.ignoreCase) {
  				filterValue = filterValue.toLowerCase();
  			}
  			if (excludeOptions) excludeOptions = excludeOptions.map(i => i[this.props.valueKey]);
  			return options.filter(option => {
  				if (excludeOptions && excludeOptions.indexOf(option[this.props.valueKey]) > -1) return false;
  				if (this.props.filterOption) return this.props.filterOption.call(this, option, filterValue);
  				if (!filterValue) return true;
  				var valueTest = String(option[this.props.valueKey]);
  				var labelTest = String(option[this.props.labelKey]);
  				if (this.props.ignoreAccents) {
  					if (this.props.matchProp !== 'label') valueTest = stripDiacritics(valueTest);
  					if (this.props.matchProp !== 'value') labelTest = stripDiacritics(labelTest);
  				}
  				if (this.props.ignoreCase) {
  					if (this.props.matchProp !== 'label') valueTest = valueTest.toLowerCase();
  					if (this.props.matchProp !== 'value') labelTest = labelTest.toLowerCase();
  				}
  				return this.props.matchPos === 'start' ? (
  					(this.props.matchProp !== 'label' && valueTest.substr(0, filterValue.length) === filterValue) ||
  					(this.props.matchProp !== 'value' && labelTest.substr(0, filterValue.length) === filterValue)
  				) : (
  					(this.props.matchProp !== 'label' && valueTest.indexOf(filterValue) >= 0) ||
  					(this.props.matchProp !== 'value' && labelTest.indexOf(filterValue) >= 0)
  				);
  			});
  		} else {
  			return options;
  		}
  	},
  
  	renderMenu (options, valueArray, focusedOption) {
  		if (options && options.length) {
  			let Option = this.props.optionComponent;
  			let renderLabel = this.props.optionRenderer || this.getOptionLabel;
  			return options.map((option, i) => {
  				let isSelected = valueArray && valueArray.indexOf(option) > -1;
  				let isFocused = option === focusedOption;
  				let optionRef = isFocused ? 'focused' : null;
  				let optionClass = classNames({
  					'Select-option': true,
  					'is-selected': isSelected,
  					'is-focused': isFocused,
  					'is-disabled': option.disabled,
  				});
  				return (
  					<Option
  						className={optionClass}
  						isDisabled={option.disabled}
  						isFocused={isFocused}
  						key={`option-${i}-${option[this.props.valueKey]}`}
  						onSelect={this.selectValue}
  						onFocus={this.focusOption}
  						option={option}
  						isSelected={isSelected}
  						ref={optionRef}
  						>
  						{renderLabel(option)}
  					</Option>
  				);
  			});
  		} else {
  			return (
  				<div className="Select-noresults">
  					{this.props.noResultsText}
  				</div>
  			);
  		}
  	},
  
  	renderHiddenField (valueArray) {
  		if (!this.props.name) return;
  		let value = valueArray.map(i => stringifyValue(i[this.props.valueKey])).join(this.props.delimiter);
  		return <input type="hidden" ref="value" name={this.props.name} value={value} disabled={this.props.disabled} />;
  	},
  
  	getFocusableOption (selectedOption) {
  		var options = this._visibleOptions;
  		if (!options.length) return;
  		let focusedOption = this.state.focusedOption || selectedOption;
  		if (focusedOption && options.indexOf(focusedOption) > -1) return focusedOption;
  		for (var i = 0; i < options.length; i++) {
  			if (!options[i].disabled) return options[i];
  		}
  	},
  
  	render () {
  		let valueArray = this.getValueArray();
  		let options = this._visibleOptions = this.filterOptions(this.props.multi ? valueArray : null);
  		let isOpen = this.state.isOpen;
  		if (this.props.multi && !options.length && valueArray.length && !this.state.inputValue) isOpen = false;
  		let focusedOption = this._focusedOption = this.getFocusableOption(valueArray[0]);
  		let className = classNames('Select', this.props.className, {
  			'Select--multi': this.props.multi,
  			'is-disabled': this.props.disabled,
  			'is-focused': this.state.isFocused,
  			'is-loading': this.props.isLoading,
  			'is-open': isOpen,
  			'is-pseudo-focused': this.state.isPseudoFocused,
  			'is-searchable': this.props.searchable,
  			'has-value': valueArray.length,
  		});
  		return (
  			<div ref="wrapper" className={className} style={this.props.wrapperStyle}>
  				{this.renderHiddenField(valueArray)}
  				<div ref="control" className="Select-control" style={this.props.style} onKeyDown={this.handleKeyDown} onMouseDown={this.handleMouseDown} onTouchEnd={this.handleMouseDown}>
  					{this.renderValue(valueArray, isOpen)}
  					{this.renderInput(valueArray)}
  					{this.renderLoading()}
  					{this.renderClear()}
  					{this.renderArrow()}
  				</div>
  				{isOpen ? (
  					<div ref="menuContainer" className="Select-menu-outer" style={this.props.menuContainerStyle}>
  						<div ref="menu" className="Select-menu" style={this.props.menuStyle} onScroll={this.handleMenuScroll} onMouseDown={this.handleMouseDownOnMenu}>
  							{this.renderMenu(options, !this.props.multi ? valueArray : null, focusedOption)}
  						</div>
  					</div>
  				) : null}
  			</div>
  		);
  	}
  
  });
  
  export default Select;
  