Select.js

import React from 'react';
import ReactDOM from 'react-dom';
import Input from 'react-input-autosize';
import classNames from 'classnames';
import blacklist from 'blacklist';

import stripDiacritics from './utils/stripDiacritics';

import Async from './Async';
import Dropdown from './Dropdown';
import Option from './Option';
import OptionGroup from './OptionGroup';
import Value from './Value';

function clone(obj) {
  const copy = {};
  for (let attr in obj) {
    if (obj.hasOwnProperty(attr)) {
    	copy[attr] = obj[attr];
    };
  }
  return copy;
}

function stringifyValue (value) {
	if (typeof value === 'object') {
		return JSON.stringify(value);
	} else {
		return value;
	}
}

const stringOrNode = React.PropTypes.oneOfType([
	React.PropTypes.string,
	React.PropTypes.node
]);

let instanceId = 1;

const Select = React.createClass({

	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
		'aria-label': React.PropTypes.string,		// Aria label (for assistive tech)
		'aria-labelledby': React.PropTypes.string,	// HTML ID of an element that should be used as the label (for assistive tech)
		autoBlur: React.PropTypes.bool,             // automatically blur the component when an option is selected
		autofocus: React.PropTypes.bool,            // autofocus the component on mount
		autosize: React.PropTypes.bool,             // whether to enable autosizing or not
		backspaceRemoves: React.PropTypes.bool,     // whether backspace removes an item if there is no text input
		backspaceToRemoveMessage: React.PropTypes.string,  // Message to use for screenreaders to press backspace to remove the current item -
														   // {label} is replaced with the item label
		className: React.PropTypes.string,          // className for the outer element
		clearAllText: stringOrNode,                 // title for the "clear" control when multi: true
		clearValueText: stringOrNode,               // 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
		dropdownComponent: React.PropTypes.func,    // dropdown component to render the menu in
		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
		inputRenderer: React.PropTypes.func,        // returns a custom input component
		isLoading: React.PropTypes.bool,            // whether the Select is loading externally or not (such as options being loaded)
		isOpen: React.PropTypes.bool,               // whether the Select dropdown menu is open or not
		joinValues: React.PropTypes.bool,           // joins multiple values into a single form field with the delimiter (legacy mode)
		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
		menuBuffer: React.PropTypes.number,         // optional buffer (in px) between the bottom of the viewport and the bottom of the menu
		menuContainerStyle: React.PropTypes.object, // optional style to apply to the menu container
		menuRenderer: React.PropTypes.func,         // renders a custom menu with options
		menuStyle: React.PropTypes.object,          // optional style to apply to the menu
		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: stringOrNode,                // placeholder displayed when there are no matching search results
		onBlur: React.PropTypes.func,               // onBlur handler: function (event) {}
		onBlurResetsInput: React.PropTypes.bool,    // whether input is cleared on blur
		onChange: React.PropTypes.func,             // onChange handler: function (newValue) {}
		onClose: React.PropTypes.func,              // fires when the menu is closed
		onFocus: React.PropTypes.func,              // onFocus handler: function (event) {}
		onInputChange: React.PropTypes.func,        // onInputChange handler: function (inputValue) {}
		onMenuScrollToBottom: React.PropTypes.func, // fires when the menu is scrolled to the bottom; can be used to paginate options
		onOpen: React.PropTypes.func,               // fires when the menu is opened
		onValueClick: React.PropTypes.func,         // onClick handler for value labels: function (value, event) {}
		openAfterFocus: React.PropTypes.bool,		// boolean to enable opening dropdown when focused
		openOnFocus: React.PropTypes.bool,          // always open options menu on focus
		optionClassName: React.PropTypes.string,    // additional class(es) to apply to the <Option /> elements
		optionComponent: React.PropTypes.func,      // option component to render in dropdown
		optionGroupComponent: React.PropTypes.func, // option group component to render in dropdown
		optionRenderer: React.PropTypes.func,       // optionRenderer: function (option) {}
		options: React.PropTypes.array,             // array of options
		pageSize: React.PropTypes.number,           // number of entries to page when using page up/down keys
		placeholder: stringOrNode,                  // field placeholder, displayed when there's no value
		renderInvalidValues: React.PropTypes.bool,  // boolean to enable rendering values that do not match any options
		required: React.PropTypes.bool,             // applies HTML5 required attribute when needed
		resetValue: React.PropTypes.any,            // value to use when you clear the control
		scrollMenuIntoView: React.PropTypes.bool,   // boolean to enable the viewport to shift so that the full menu fully visible when engaged
		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
		tabSelectsValue: React.PropTypes.bool,      // whether to treat tabbing out while focused to be value selection
		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
	},

	statics: { Async },

	getDefaultProps () {
		return {
			addLabelText: 'Add "{label}"?',
			autosize: true,
			allowCreate: false,
			backspaceRemoves: true,
			backspaceToRemoveMessage: 'Press backspace to remove {label}',
			clearable: true,
			clearAllText: 'Clear all',
			clearValueText: 'Clear value',
			delimiter: ',',
			disabled: false,
			dropdownComponent: Dropdown,
			escapeClearsValue: true,
			filterOptions: true,
			ignoreAccents: true,
			ignoreCase: true,
			inputProps: {},
			isLoading: false,
			joinValues: false,
			labelKey: 'label',
			matchPos: 'any',
			matchProp: 'any',
			menuBuffer: 0,
			multi: false,
			noResultsText: 'No results found',
			onBlurResetsInput: true,
			openAfterFocus: false,
			optionComponent: Option,
			optionGroupComponent: OptionGroup,
			pageSize: 5,
			placeholder: 'Select...',
			renderInvalidValues: false,
			required: false,
			resetValue: null,
			scrollMenuIntoView: true,
			searchable: true,
			simpleValue: false,
			tabSelectsValue: true,
			valueComponent: Value,
			valueKey: 'value',
		};
	},

	getInitialState () {
		return {
			inputValue: '',
			isFocused: false,
			isLoading: false,
			isOpen: false,
			isPseudoFocused: false,
			required: false,
		};
	},

	componentWillMount() {
		this._flatOptions = this.flattenOptions(this.props.options);
		this._instancePrefix = 'react-select-' + (++instanceId) + '-';
		const valueArray = this.getValueArray(this.props.value);

		if (this.props.required) {
			this.setState({
				required: this.handleRequired(valueArray[0], this.props.multi),
			});
		}
	},

	componentDidMount () {
		if (this.props.autofocus) {
			this.focus();
		}
	},

	componentWillReceiveProps(nextProps) {
		if (nextProps.options !== this.props.options) {
			this._flatOptions = this.flattenOptions(nextProps.options);
		}

		const valueArray = this.getValueArray(nextProps.value, nextProps);

		if (nextProps.required) {
			this.setState({
				required: this.handleRequired(valueArray[0], nextProps.multi),
			});
		}
	},

	componentWillUpdate (nextProps, nextState) {
		if (nextState.isOpen !== this.state.isOpen) {
			const handler = nextState.isOpen ? nextProps.onOpen : nextProps.onClose;
			handler && handler();
		}
	},

	componentDidUpdate (prevProps, prevState) {
		// focus to the selected option
		if (this.refs.menu && this.refs.focused && this.state.isOpen && !this.hasScrolledToOption) {
			let focusedOptionNode = ReactDOM.findDOMNode(this.refs.focused);
      let focusedOptionPreviousSibling = focusedOptionNode.previousSibling;
      let focusedOptionParent = focusedOptionNode.parentElement;
      let menuNode = ReactDOM.findDOMNode(this.refs.menu);
      if (focusedOptionPreviousSibling) {
        menuNode.scrollTop = focusedOptionPreviousSibling.offsetTop;
      } else if (focusedOptionParent && focusedOptionParent === 'Select-menu') {
        menuNode.scrollTop = focusedOptionParent.offsetTop;
      } else {
        menuNode.scrollTop = focusedOptionNode.offsetTop;
      }
			this.hasScrolledToOption = true;
		} else if (!this.state.isOpen) {
			this.hasScrolledToOption = false;
		}

		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.scrollBy(0, menuContainerRect.bottom + this.props.menuBuffer - window.innerHeight);
			}
		}
		if (prevProps.disabled !== this.props.disabled) {
			this.setState({ isFocused: false }); // eslint-disable-line react/no-did-update-set-state
			this.closeMenu();
		}
	},

	focus () {
		if (!this.refs.input) return;
		this.refs.input.focus();

		if (this.props.openAfterFocus) {
			this.setState({
				isOpen: true,
			});
		}
	},

	blurInput() {
		if (!this.refs.input) return;
		this.refs.input.blur();
	},

	handleTouchMove (event) {
		// Set a flag that the view is being dragged
		this.dragging = true;
	},

	handleTouchStart (event) {
		// Set a flag that the view is not being dragged
		this.dragging = false;
	},

	handleTouchEnd (event) {
		// Check if the view is being dragged, In this case
		// we don't want to fire the click event (because the user only wants to scroll)
		if(this.dragging) return;

		// Fire the mouse events
		this.handleMouseDown(event);
	},

	handleTouchEndClearValue (event) {
		// Check if the view is being dragged, In this case
		// we don't want to fire the click event (because the user only wants to scroll)
		if(this.dragging) return;

		// Clear the value
		this.clearValue(event);
	},

	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;
		}

		if (event.target.tagName === 'INPUT') {
			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) {
			// On iOS, we can get into a state where we think the input is focused but it isn't really,
			// since iOS ignores programmatic calls to input.focus() that weren't triggered by a click event.
			// Call focus() again here to be safe.
			this.focus();

			let input = this.refs.input;
			if (typeof input.getInput === 'function') {
				// Get the actual DOM input if the ref is an <Input /> component
				input = input.getInput();
			}

			// clears the value so that the cursor will be at the end of input when the component re-renders
			input.value = '';

			// 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();
	},

	handleMouseDownOnMenu (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;
		}
		event.stopPropagation();
		event.preventDefault();

		this._openAfterFocus = true;
		this.focus();
	},

	closeMenu () {
		this.setState({
			isOpen: false,
			isPseudoFocused: this.state.isFocused && !this.props.multi,
			inputValue: '',
		});
		this.hasScrolledToOption = false;
	},

	handleInputFocus (event) {
		var isOpen = this.state.isOpen || this._openAfterFocus || this.props.openOnFocus;
		if (this.props.onFocus) {
			this.props.onFocus(event);
		}
		this.setState({
			isFocused: true,
			isOpen: isOpen
		});
		this._openAfterFocus = false;
	},

	handleInputBlur (event) {
		// The check for menu.contains(activeElement) is necessary to prevent IE11's scrollbar from closing the menu in certain contexts.
		if (this.refs.menu && (this.refs.menu === document.activeElement || this.refs.menu.contains(document.activeElement))) {
			this.focus();
			return;
		}

		if (this.props.onBlur) {
			this.props.onBlur(event);
		}
		var onBlurredState = {
			isFocused: false,
			isOpen: false,
			isPseudoFocused: false,
		};
		if (this.props.onBlurResetsInput) {
			onBlurredState.inputValue = '';
		}
		this.setState(onBlurredState);
	},

	handleInputChange (event) {
		let newInputValue = event.target.value;
		if (this.state.inputValue !== event.target.value && this.props.onInputChange) {
			let nextState = this.props.onInputChange(newInputValue);
			// Note: != used deliberately here to catch undefined and null
			if (nextState != null && typeof nextState !== 'object') {
				newInputValue = '' + nextState;
			}
		}
		this.setState({
			isOpen: true,
			isPseudoFocused: false,
			inputValue: newInputValue
		});
	},

	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 || !this.props.tabSelectsValue) {
					return;
				}
				this.selectFocusedOption();
			return;
			case 13: // enter
				if (!this.state.isOpen) return;
				event.stopPropagation();
				this.selectFocusedOption();
			break;
			case 27: // escape
				if (this.state.isOpen) {
					this.closeMenu();
					event.stopPropagation();
				} else if (this.props.clearable && this.props.escapeClearsValue) {
					this.clearValue(event);
					event.stopPropagation();
				}
			break;
			case 38: // up
				this.focusPreviousOption();
			break;
			case 40: // down
				this.focusNextOption();
			break;
			case 33: // page up
				this.focusPageUpOption();
			break;
			case 34: // page down
				this.focusPageDownOption();
			break;
			case 35: // end key
				this.focusEndOption();
			break;
			case 36: // home key
				this.focusStartOption();
			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();
		}
	},

	handleRequired (value, multi) {
		if (!value) return true;
		return (multi ? value.length === 0 : Object.keys(value).length === 0);
	},

	getOptionLabel (op) {
		return op[this.props.labelKey];
	},

	/**
	 * Turns a value into an array from the given options
	 * @param	{String|Number|Array}	value		- the value of the select input
	 * @param	{Object}		nextProps	- optionally specify the nextProps so the returned array uses the latest configuration
	 * @returns	{Array}	the value of the select represented in an array
	 */
	getValueArray (value, nextProps) {
		/** support optionally passing in the `nextProps` so `componentWillReceiveProps` updates will function as expected */
		const props = typeof nextProps === 'object' ? nextProps : this.props;
		if (props.multi) {
			if (typeof value === 'string') value = value.split(props.delimiter);
			if (!Array.isArray(value)) {
				if (value === null || value === undefined) return [];
				value = [value];
			}
			return value.map(value => this.expandValue(value, props)).filter(i => i);
		}
		var expandedValue = this.expandValue(value, props);
		return expandedValue ? [expandedValue] : [];
	},

	/**
	 * Retrieve a value from the given options and valueKey
	 * @param	{String|Number|Array}	value	- the selected value(s)
	 * @param	{Object}		props	- the Select component's props (or nextProps)
	 */
	expandValue (value, props) {
		if (typeof value !== 'string' && typeof value !== 'number') return value;
		let { labelKey, valueKey, renderInvalidValues } = this.props;
		let options = this._flatOptions;
		if (!options || value === '') return;
		for (var i = 0; i < options.length; i++) {
			if (options[i][valueKey] === value) return options[i];
		}

		// no matching option, return an invalid option if renderInvalidValues is enabled
		if (renderInvalidValues) {
			return {
				invalid: true,
				[labelKey]: value,
				[valueKey]: value
			};
		}
	},

	setValue (value) {
		if (this.props.autoBlur){
			this.blurInput();
		}
		if (!this.props.onChange) return;
		if (this.props.required) {
			const required = this.handleRequired(value, this.props.multi);
			this.setState({ required });
		}
		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) {
		//NOTE: update value in the callback to make sure the input value is empty so that there are no sttyling issues (Chrome had issue otherwise)
		this.hasScrolledToOption = false;
		if (this.props.multi) {
			this.setState({
				inputValue: '',
				focusedIndex: null
			}, () => {
				this.addValue(value);
			});
		} else {
			this.setState({
				isOpen: false,
				inputValue: '',
				isPseudoFocused: this.state.isFocused,
			}, () => {
				this.setValue(value);
			});
		}
	},

	addValue (value) {
		var valueArray = this.getValueArray(this.props.value);
		this.setValue(valueArray.concat(value));
	},

	popValue () {
		var valueArray = this.getValueArray(this.props.value);
		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.props.value);
		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(this.props.resetValue);
		this.setState({
			isOpen: false,
			inputValue: '',
		}, this.focus);
	},

	focusOption (option) {
		this.setState({
			focusedOption: option
		});
	},

	focusNextOption () {
		this.focusAdjacentOption('next');
	},

	focusPreviousOption () {
		this.focusAdjacentOption('previous');
	},

	focusPageUpOption () {
		this.focusAdjacentOption('page_up');
	},

	focusPageDownOption () {
		this.focusAdjacentOption('page_down');
	},

	focusStartOption () {
		this.focusAdjacentOption('start');
	},

	focusEndOption () {
		this.focusAdjacentOption('end');
	},

	focusAdjacentOption (dir) {
		var options = this._visibleOptions
			.map((option, index) => ({ option, index }))
			.filter(option => !option.option.disabled);
		this._scrollToFocusedOptionOnUpdate = true;
		if (!this.state.isOpen) {
			this.setState({
				isOpen: true,
				inputValue: '',
				focusedOption: this._focusedOption || options[dir === 'next' ? 0 : options.length - 1].option
			});
			return;
		}
		if (!options.length) return;
		var focusedIndex = -1;
		for (var i = 0; i < options.length; i++) {
			if (this._focusedOption === options[i].option) {
				focusedIndex = i;
				break;
			}
		}
		if (dir === 'next' && focusedIndex !== -1 ) {
			focusedIndex = (focusedIndex + 1) % options.length;
		} else if (dir === 'previous') {
			if (focusedIndex > 0) {
				focusedIndex = focusedIndex - 1;
			} else {
				focusedIndex = options.length - 1;
			}
		} else if (dir === 'start') {
			focusedIndex = 0;
		} else if (dir === 'end') {
			focusedIndex = options.length - 1;
		} else if (dir === 'page_up') {
			var potentialIndex = focusedIndex - this.props.pageSize;
			if ( potentialIndex < 0 ) {
				focusedIndex = 0;
			} else {
				focusedIndex = potentialIndex;
			}
		} else if (dir === 'page_down') {
			var potentialIndex = focusedIndex + this.props.pageSize;
			if ( potentialIndex > options.length - 1 ) {
				focusedIndex = options.length - 1;
			} else {
				focusedIndex = potentialIndex;
			}
		}

		if (focusedIndex === -1) {
			focusedIndex = 0;
		}

		this.setState({
			focusedIndex: options[focusedIndex].index,
			focusedOption: options[focusedIndex].option
		});
	},

	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
						id={this._instancePrefix + '-value-' + i}
						instancePrefix={this._instancePrefix}
						disabled={this.props.disabled || value.clearableValue === false}
						key={`value-${i}-${value[this.props.valueKey]}`}
						onClick={onClick}
						onRemove={this.removeValue}
						value={value}
					>
						{renderLabel(value)}
						<span className="Select-aria-only">&nbsp;</span>
					</ValueComponent>
				);
			});
		} else if (!this.state.inputValue) {
			if (isOpen) onClick = null;
			return (
				<ValueComponent
					id={this._instancePrefix + '-value-item'}
					disabled={this.props.disabled}
					instancePrefix={this._instancePrefix}
					onClick={onClick}
					value={valueArray[0]}
				>
					{renderLabel(valueArray[0])}
				</ValueComponent>
			);
		}
	},

	renderInput (valueArray, focusedOptionIndex) {
		if (this.props.inputRenderer) {
			return this.props.inputRenderer();
		} else {
			var className = classNames('Select-input', this.props.inputProps.className);
			const isOpen = !!this.state.isOpen;

			const ariaOwns = classNames({
				[this._instancePrefix + '-list']: isOpen,
				[this._instancePrefix + '-backspace-remove-message']: this.props.multi
					&& !this.props.disabled
					&& this.state.isFocused
					&& !this.state.inputValue
			});

			// TODO: Check how this project includes Object.assign()
			const inputProps = Object.assign({}, this.props.inputProps, {
				role: 'combobox',
				'aria-expanded': '' + isOpen,
				'aria-owns': ariaOwns,
				'aria-haspopup': '' + isOpen,
				'aria-activedescendant': isOpen ? this._instancePrefix + '-option-' + focusedOptionIndex : this._instancePrefix + '-value',
				'aria-labelledby': this.props['aria-labelledby'],
				'aria-label': this.props['aria-label'],
				className: className,
				tabIndex: this.props.tabIndex,
				onBlur: this.handleInputBlur,
				onChange: this.handleInputChange,
				onFocus: this.handleInputFocus,
				ref: 'input',
				required: this.state.required,
				value: this.state.inputValue
			});

			if (this.props.disabled || !this.props.searchable) {
				const divProps = blacklist(this.props.inputProps, 'inputClassName');
				return (
					<div
						{...divProps}
						role="combobox"
						aria-expanded={isOpen}
						aria-owns={isOpen ? this._instancePrefix + '-list' : this._instancePrefix + '-value'}
						aria-activedescendant={isOpen ? this._instancePrefix + '-option-' + focusedOptionIndex : this._instancePrefix + '-value'}
						className={className}
						tabIndex={this.props.tabIndex || 0}
						onBlur={this.handleInputBlur}
						onFocus={this.handleInputFocus}
						ref="input"
						aria-readonly={'' + !!this.props.disabled}
						style={{ border: 0, width: 1, display:'inline-block' }}/>
				);
			}

			if (this.props.autosize) {
				return (
					<Input {...inputProps} minWidth="5px" />
				);
			}
			return (
				<div className={ className }>
					<input {...inputProps} />
				</div>
			);
		}
	},

	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}
				onTouchStart={this.handleTouchStart}
				onTouchMove={this.handleTouchMove}
				onTouchEnd={this.handleTouchEndClearValue}
			>
				<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 (options, excludeOptions) {
		let excludeOptionValues = null;
		var filterValue = this.state.inputValue;
		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) excludeOptionValues = excludeOptions.map(i => i[this.props.valueKey]);
			const includeOption = (option) => {
				if (excludeOptionValues && excludeOptionValues.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)
				);
			};
			let filteredOptions = [];
			options.forEach((option) => {
				if (this.isGroup(option)) {
					const filteredGroup = clone(option);
					filteredGroup.options = this.filterOptions(option.options, excludeOptions);
					if (filteredGroup.options.length) {
						filteredOptions.push(filteredGroup);
					};
				} else if (includeOption(option)) {
					filteredOptions.push(option);
				};
			});
			return filteredOptions;
		} else {
			return options;
		}
	},

	isGroup (option) {
		return option && Array.isArray(option.options);
	},

	flattenOptions (options) {
		if (!options) return;
		let flatOptions = [];
		for (let i = 0; i < options.length; i ++) {
			if (this.isGroup(options[i])) {
				flatOptions = flatOptions.concat(this.flattenOptions(options[i].options));
			} else {
				flatOptions.push(options[i]);
			}
		}
		return flatOptions;
	},

	renderMenu (options, valueArray, focusedOption) {
		if (options && options.length) {
			if (this.props.menuRenderer) {
				return this.props.menuRenderer({
					focusedOption,
					focusOption: this.focusOption,
					labelKey: this.props.labelKey,
					options,
					selectValue: this.selectValue,
					valueArray,
				});
			} else {
				let OptionGroup = this.props.optionGroupComponent;
				let Option = this.props.optionComponent;
				let renderLabel = this.props.optionRenderer || this.getOptionLabel;

				return options.map((option, i) => {
					if (this.isGroup(option)) {
						let optionGroupClass = classNames({
							'Select-option-group': true,
						});

						return (
							<OptionGroup
								className={optionGroupClass}
								key={`option-group-${i}`}
								label={renderLabel(option)}
								option={option}
								>
								{this.renderMenu(option.options, valueArray, focusedOption)}
							</OptionGroup>
						);
					} else {
						let isSelected = valueArray && valueArray.indexOf(option) > -1;
						let isFocused = option === focusedOption;
						let optionRef = isFocused ? 'focused' : null;
						let optionClass = classNames(this.props.optionClassName, {
							'Select-option': true,
							'is-selected': isSelected,
							'is-focused': isFocused,
							'is-disabled': option.disabled,
						});

						return (
							<Option
                instancePrefix={this._instancePrefix}
                optionIndex={i}
								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 if (this.props.noResultsText) {
			return (
				<div className="Select-noresults">
					{this.props.noResultsText}
				</div>
			);
		} else {
			return null;
		}
	},

	renderHiddenField (valueArray) {
		if (!this.props.name) return;
		if (this.props.joinValues) {
			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} />
			);
		}
		return valueArray.map((item, index) => (
			<input key={'hidden.' + index}
				type="hidden"
				ref={'value' + index}
				name={this.props.name}
				value={stringifyValue(item[this.props.valueKey])}
				disabled={this.props.disabled} />
		));
	},

	getFocusableOptionIndex (selectedOption) {
		var options = this._visibleOptions;
		if (!options.length) return null;

		let focusedOption = this.state.focusedOption || selectedOption;
		if (focusedOption && !focusedOption.disabled) {
			const focusedOptionIndex = options.indexOf(focusedOption);
			if (focusedOptionIndex !== -1) {
				return focusedOptionIndex;
			}
		}

		for (var i = 0; i < options.length; i++) {
			if (!options[i].disabled) return i;
		}
		return null;
	},

	renderOuter (options, valueArray, focusedOption) {
    let Dropdown = this.props.dropdownComponent;
		let menu = this.renderMenu(options, valueArray, focusedOption);
		if (!menu) {
			return null;
		}

		return (
      <Dropdown>
        <div ref="menuContainer" className="Select-menu-outer" style={this.props.menuContainerStyle}>
          <div ref="menu" role="listbox" className="Select-menu" id={this._instancePrefix + '-list'}
               style={this.props.menuStyle}
               onScroll={this.handleMenuScroll}
               onMouseDown={this.handleMouseDownOnMenu}>
            {menu}
          </div>
        </div>
      </Dropdown>
		);
	},

	render () {
    let valueArray = this.getValueArray(this.props.value);
		let options = this.filterOptions(this.props.options || [], this.props.multi ? valueArray : null);
		this._visibleOptions = this.flattenOptions(options);
		let isOpen = typeof this.props.isOpen === 'boolean' ? this.props.isOpen : this.state.isOpen;
		if (this.props.multi && !options.length && valueArray.length && !this.state.inputValue) isOpen = false;
		const focusedOptionIndex = this.getFocusableOptionIndex(valueArray[0]);

		let focusedOption = null;
		if (focusedOptionIndex !== null) {
			focusedOption = this._focusedOption = this._visibleOptions[focusedOptionIndex];
		} else {
			focusedOption = this._focusedOption = null;
		}
		let className = classNames('Select', this.props.className, {
			'Select--multi': this.props.multi,
			'Select--single': !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,
		});

		let removeMessage = null;
		if (this.props.multi &&
			!this.props.disabled &&
			valueArray.length &&
			!this.state.inputValue &&
			this.state.isFocused &&
			this.props.backspaceRemoves) {
			removeMessage = (
				<span id={this._instancePrefix + '-backspace-remove-message'} className="Select-aria-only" aria-live="assertive">
					{this.props.backspaceToRemoveMessage.replace('{label}', valueArray[valueArray.length - 1][this.props.labelKey])}
				</span>
			);
		}

		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.handleTouchEnd}
					onTouchStart={this.handleTouchStart}
					onTouchMove={this.handleTouchMove}
				>
					<span className="Select-multi-value-wrapper" id={this._instancePrefix + '-value'}>
						{this.renderValue(valueArray, isOpen)}
						{this.renderInput(valueArray, focusedOptionIndex)}
					</span>
					{removeMessage}
					{this.renderLoading()}
					{this.renderClear()}
					{this.renderArrow()}
				</div>
				{isOpen ? this.renderOuter(options, !this.props.multi ? valueArray : null, focusedOption) : null}
			</div>
		);
	}

});

export default Select;