import { __assign, __extends } from "tslib";
import * as React from 'react';
import { Async, KeyCodes, css, elementContains, getId, classNamesFunction, styled, initializeComponentRef, } from '../../Utilities';
import { Callout } from '../../Callout';
import { Selection, SelectionZone, SelectionMode } from '../../utilities/selection/index';
import { DirectionalHint } from '../../common/DirectionalHint';
import { Suggestions } from './Suggestions/Suggestions';
import { getStyles as suggestionsStyles } from './Suggestions/Suggestions.styles';
import { SuggestionsController } from './Suggestions/SuggestionsController';
import { ValidationState, } from './BasePicker.types';
import { Autofill } from '../Autofill/index';
import * as stylesImport from './BasePicker.scss';
var legacyStyles = stylesImport;
var getClassNames = classNamesFunction();
/**
 * Should be removed once new picker without inheritance is created
 */
function getStyledSuggestions(suggestionsType) {
    return styled(suggestionsType, suggestionsStyles, undefined, {
        scope: 'Suggestions',
    });
}
/**
 * {@docCategory Pickers}
 */
var BasePicker = /** @class */ (function (_super) {
    __extends(BasePicker, _super);
    function BasePicker(basePickerProps) {
        var _this = _super.call(this, basePickerProps) || this;
        // Refs
        _this.root = React.createRef();
        _this.input = React.createRef();
        _this.suggestionElement = React.createRef();
        /**
         * @deprecated this is no longer necessary as typescript now supports generic elements
         */
        _this.SuggestionOfProperType = Suggestions;
        // eslint-disable-next-line deprecation/deprecation
        _this._styledSuggestions = getStyledSuggestions(_this.SuggestionOfProperType);
        _this.dismissSuggestions = function (ev) {
            var selectItemFunction = function () {
                var addItemOnDismiss = true;
                if (_this.props.onDismiss) {
                    addItemOnDismiss = _this.props.onDismiss(ev, _this.suggestionStore.currentSuggestion ? _this.suggestionStore.currentSuggestion.item : undefined);
                }
                if (!ev || (ev && !ev.defaultPrevented)) {
                    // Select the first suggestion if one is available and permitted by onDismiss when user leaves.
                    if (addItemOnDismiss !== false &&
                        _this.canAddItems() &&
                        _this.suggestionStore.hasSelectedSuggestion() &&
                        _this.state.suggestedDisplayValue) {
                        _this.addItemByIndex(0);
                    }
                }
            };
            if (_this.currentPromise) {
                _this.currentPromise.then(function () { return selectItemFunction(); });
            }
            else {
                selectItemFunction();
            }
            _this.setState({ suggestionsVisible: false });
        };
        _this.refocusSuggestions = function (keyCode) {
            _this.resetFocus();
            if (_this.suggestionStore.suggestions && _this.suggestionStore.suggestions.length > 0) {
                if (keyCode === KeyCodes.up) {
                    _this.suggestionStore.setSelectedSuggestion(_this.suggestionStore.suggestions.length - 1);
                }
                else if (keyCode === KeyCodes.down) {
                    _this.suggestionStore.setSelectedSuggestion(0);
                }
            }
        };
        _this.onInputChange = function (value) {
            _this.updateValue(value);
            _this.setState({
                moreSuggestionsAvailable: true,
                isMostRecentlyUsedVisible: false,
            });
        };
        _this.onSuggestionClick = function (ev, item, index) {
            _this.addItemByIndex(index);
        };
        _this.onSuggestionRemove = function (ev, item, index) {
            if (_this.props.onRemoveSuggestion) {
                _this.props.onRemoveSuggestion(item);
            }
            _this.suggestionStore.removeSuggestion(index);
        };
        _this.onInputFocus = function (ev) {
            _this.selection.setAllSelected(false);
            // Only trigger all of the focus if this component isn't already focused.
            // For example when an item is selected or removed from the selected list it should be treated
            // as though the input is still focused.
            if (!_this.state.isFocused) {
                _this._userTriggeredSuggestions();
                if (_this.props.inputProps && _this.props.inputProps.onFocus) {
                    _this.props.inputProps.onFocus(ev);
                }
            }
        };
        _this.onInputBlur = function (ev) {
            if (_this.props.inputProps && _this.props.inputProps.onBlur) {
                _this.props.inputProps.onBlur(ev);
            }
        };
        _this.onBlur = function (ev) {
            if (_this.state.isFocused) {
                // Only blur the entire component if an unrelated element gets focus.
                // Otherwise treat it as though it still has focus.
                // Do nothing if the blur is coming from something
                // inside the comboBox root or the comboBox menu since
                // it we are not really bluring from the whole comboBox
                var relatedTarget = ev.relatedTarget;
                if (ev.relatedTarget === null) {
                    // In IE11, due to lack of support, event.relatedTarget is always
                    // null making every onBlur call to be "outside" of the ComboBox
                    // even when it's not. Using document.activeElement is another way
                    // for us to be able to get what the relatedTarget without relying
                    // on the event
                    relatedTarget = document.activeElement;
                }
                if (relatedTarget && !elementContains(_this.root.current, relatedTarget)) {
                    _this.setState({ isFocused: false });
                    if (_this.props.onBlur) {
                        _this.props.onBlur(ev);
                    }
                }
            }
        };
        /**
         * Reveals suggestions any time the user clicks on the input element
         * without shifting focus.
         */
        _this.onClick = function (ev) {
            if (_this.props.inputProps !== undefined && _this.props.inputProps.onClick !== undefined) {
                _this.props.inputProps.onClick(ev);
            }
            // Only primary (left) clicks show suggestions.
            if (ev.button === 0) {
                _this._userTriggeredSuggestions();
            }
        };
        _this.onFocus = function () {
            if (!_this.state.isFocused) {
                _this.setState({ isFocused: true });
            }
        };
        _this.onKeyDown = function (ev) {
            // eslint-disable-next-line deprecation/deprecation
            var keyCode = ev.which;
            switch (keyCode) {
                case KeyCodes.escape:
                    if (_this.state.suggestionsVisible) {
                        _this.setState({ suggestionsVisible: false });
                        ev.preventDefault();
                        ev.stopPropagation();
                    }
                    break;
                case KeyCodes.tab:
                case KeyCodes.enter:
                    if (_this.suggestionElement.current && _this.suggestionElement.current.hasSuggestedActionSelected()) {
                        _this.suggestionElement.current.executeSelectedAction();
                    }
                    else if (!ev.shiftKey && _this.suggestionStore.hasSelectedSuggestion() && _this.state.suggestionsVisible) {
                        _this.completeSuggestion();
                        ev.preventDefault();
                        ev.stopPropagation();
                    }
                    else {
                        _this._completeGenericSuggestion();
                    }
                    break;
                case KeyCodes.backspace:
                    if (!_this.props.disabled) {
                        _this.onBackspace(ev);
                    }
                    ev.stopPropagation();
                    break;
                case KeyCodes.del:
                    if (!_this.props.disabled) {
                        if (_this.input.current &&
                            ev.target === _this.input.current.inputElement &&
                            _this.state.suggestionsVisible &&
                            _this.suggestionStore.currentIndex !== -1) {
                            if (_this.props.onRemoveSuggestion) {
                                _this.props.onRemoveSuggestion(_this.suggestionStore.currentSuggestion.item);
                            }
                            _this.suggestionStore.removeSuggestion(_this.suggestionStore.currentIndex);
                            _this.forceUpdate();
                        }
                        else {
                            _this.onBackspace(ev);
                        }
                    }
                    ev.stopPropagation();
                    break;
                case KeyCodes.up:
                    if (_this.input.current && ev.target === _this.input.current.inputElement && _this.state.suggestionsVisible) {
                        if (_this.suggestionElement.current &&
                            _this.suggestionElement.current.tryHandleKeyDown(keyCode, _this.suggestionStore.currentIndex)) {
                            ev.preventDefault();
                            ev.stopPropagation();
                            _this.forceUpdate();
                        }
                        else {
                            if (_this.suggestionElement.current &&
                                _this.suggestionElement.current.hasSuggestedAction() &&
                                _this.suggestionStore.currentIndex === 0) {
                                ev.preventDefault();
                                ev.stopPropagation();
                                _this.suggestionElement.current.focusAboveSuggestions();
                                _this.suggestionStore.deselectAllSuggestions();
                                _this.forceUpdate();
                            }
                            else {
                                if (_this.suggestionStore.previousSuggestion()) {
                                    ev.preventDefault();
                                    ev.stopPropagation();
                                    _this.onSuggestionSelect();
                                }
                            }
                        }
                    }
                    break;
                case KeyCodes.down:
                    if (_this.input.current && ev.target === _this.input.current.inputElement && _this.state.suggestionsVisible) {
                        if (_this.suggestionElement.current &&
                            _this.suggestionElement.current.tryHandleKeyDown(keyCode, _this.suggestionStore.currentIndex)) {
                            ev.preventDefault();
                            ev.stopPropagation();
                            _this.forceUpdate();
                        }
                        else {
                            if (_this.suggestionElement.current &&
                                _this.suggestionElement.current.hasSuggestedAction() &&
                                _this.suggestionStore.currentIndex + 1 === _this.suggestionStore.suggestions.length) {
                                ev.preventDefault();
                                ev.stopPropagation();
                                _this.suggestionElement.current.focusBelowSuggestions();
                                _this.suggestionStore.deselectAllSuggestions();
                                _this.forceUpdate();
                            }
                            else {
                                if (_this.suggestionStore.nextSuggestion()) {
                                    ev.preventDefault();
                                    ev.stopPropagation();
                                    _this.onSuggestionSelect();
                                }
                            }
                        }
                    }
                    break;
            }
        };
        _this.onItemChange = function (changedItem, index) {
            var items = _this.state.items;
            if (index >= 0) {
                var newItems = items;
                newItems[index] = changedItem;
                _this._updateSelectedItems(newItems);
            }
        };
        _this.onGetMoreResults = function () {
            _this.setState({
                isSearching: true,
            }, function () {
                if (_this.props.onGetMoreResults && _this.input.current) {
                    var suggestions = _this.props.onGetMoreResults(_this.input.current.value, _this.state.items);
                    var suggestionsArray = suggestions;
                    var suggestionsPromiseLike = suggestions;
                    if (Array.isArray(suggestionsArray)) {
                        _this.updateSuggestions(suggestionsArray);
                        _this.setState({ isSearching: false });
                    }
                    else if (suggestionsPromiseLike.then) {
                        suggestionsPromiseLike.then(function (newSuggestions) {
                            _this.updateSuggestions(newSuggestions);
                            _this.setState({ isSearching: false });
                        });
                    }
                }
                else {
                    _this.setState({ isSearching: false });
                }
                if (_this.input.current) {
                    _this.input.current.focus();
                }
                _this.setState({
                    moreSuggestionsAvailable: false,
                    isResultsFooterVisible: true,
                });
            });
        };
        _this.completeSelection = function (item) {
            _this.addItem(item);
            _this.updateValue('');
            if (_this.input.current) {
                _this.input.current.clear();
            }
            _this.setState({ suggestionsVisible: false });
        };
        _this.addItemByIndex = function (index) {
            _this.completeSelection(_this.suggestionStore.getSuggestionAtIndex(index).item);
        };
        _this.addItem = function (item) {
            var processedItem = _this.props.onItemSelected
                ? _this.props.onItemSelected(item)
                : item;
            if (processedItem === null) {
                return;
            }
            var processedItemObject = processedItem;
            var processedItemPromiseLike = processedItem;
            if (processedItemPromiseLike && processedItemPromiseLike.then) {
                processedItemPromiseLike.then(function (resolvedProcessedItem) {
                    var newItems = _this.state.items.concat([resolvedProcessedItem]);
                    _this._updateSelectedItems(newItems);
                });
            }
            else {
                var newItems = _this.state.items.concat([processedItemObject]);
                _this._updateSelectedItems(newItems);
            }
            _this.setState({ suggestedDisplayValue: '' });
        };
        _this.removeItem = function (item, focusNextItem) {
            var items = _this.state.items;
            var index = items.indexOf(item);
            if (index >= 0) {
                var newItems = items.slice(0, index).concat(items.slice(index + 1));
                _this._updateSelectedItems(newItems);
            }
        };
        _this.removeItems = function (itemsToRemove) {
            var items = _this.state.items;
            var newItems = items.filter(function (item) { return itemsToRemove.indexOf(item) === -1; });
            _this._updateSelectedItems(newItems);
        };
        /**
         * @deprecated this is no longer necessary as focuszone has been removed
         */
        _this._shouldFocusZoneEnterInnerZone = function (ev) {
            // If suggestions are shown const up/down keys control them, otherwise allow them through to control the focusZone.
            if (_this.state.suggestionsVisible) {
                // eslint-disable-next-line deprecation/deprecation
                switch (ev.which) {
                    case KeyCodes.up:
                    case KeyCodes.down:
                        return true;
                }
            }
            // eslint-disable-next-line deprecation/deprecation
            if (ev.which === KeyCodes.enter) {
                return true;
            }
            return false;
        };
        _this._onResolveSuggestions = function (updatedValue) {
            var suggestions = _this.props.onResolveSuggestions(updatedValue, _this.state.items);
            if (suggestions !== null) {
                _this.updateSuggestionsList(suggestions, updatedValue);
            }
        };
        _this._completeGenericSuggestion = function () {
            if (_this.props.onValidateInput &&
                _this.input.current &&
                _this.props.onValidateInput(_this.input.current.value) !== ValidationState.invalid &&
                _this.props.createGenericItem) {
                var itemToConvert = _this.props.createGenericItem(_this.input.current.value, _this.props.onValidateInput(_this.input.current.value));
                _this.suggestionStore.createGenericSuggestion(itemToConvert);
                _this.completeSuggestion();
            }
        };
        /**
         * This should be called when the user does something other than use text entry to trigger suggestions.
         *
         */
        _this._userTriggeredSuggestions = function () {
            if (!_this.state.suggestionsVisible) {
                var input = _this.input.current ? _this.input.current.value : '';
                if (!input) {
                    _this.onEmptyInputFocus();
                }
                else {
                    if (_this.suggestionStore.suggestions.length === 0) {
                        _this._onResolveSuggestions(input);
                    }
                    else {
                        _this.setState({
                            isMostRecentlyUsedVisible: false,
                            suggestionsVisible: true,
                        });
                    }
                }
            }
        };
        initializeComponentRef(_this);
        _this._async = new Async(_this);
        var items = basePickerProps.selectedItems || basePickerProps.defaultSelectedItems || [];
        _this._id = getId();
        _this._ariaMap = {
            selectedItems: "selected-items-" + _this._id,
            selectedSuggestionAlert: "selected-suggestion-alert-" + _this._id,
            suggestionList: "suggestion-list-" + _this._id,
            combobox: "combobox-" + _this._id,
        };
        _this.suggestionStore = new SuggestionsController();
        _this.selection = new Selection({ onSelectionChanged: function () { return _this.onSelectionChange(); } });
        _this.selection.setItems(items);
        _this.state = {
            items: items,
            suggestedDisplayValue: '',
            isMostRecentlyUsedVisible: false,
            moreSuggestionsAvailable: false,
            isFocused: false,
            isSearching: false,
            selectedIndices: [],
        };
        return _this;
    }
    BasePicker.getDerivedStateFromProps = function (newProps) {
        if (newProps.selectedItems) {
            return { items: newProps.selectedItems };
        }
        return null;
    };
    Object.defineProperty(BasePicker.prototype, "items", {
        get: function () {
            return this.state.items;
        },
        enumerable: true,
        configurable: true
    });
    BasePicker.prototype.componentDidMount = function () {
        this.selection.setItems(this.state.items);
        this._onResolveSuggestions = this._async.debounce(this._onResolveSuggestions, this.props.resolveDelay);
    };
    BasePicker.prototype.componentDidUpdate = function (oldProps, oldState) {
        if (this.state.items && this.state.items !== oldState.items) {
            var currentSelectedIndex = this.selection.getSelectedIndices()[0];
            this.selection.setItems(this.state.items);
            if (this.state.isFocused) {
                // Reset focus and selection so that selected item stays in sync if something
                // has been removed
                if (this.state.items.length < oldState.items.length) {
                    this.selection.setIndexSelected(currentSelectedIndex, false, true);
                    this.resetFocus(currentSelectedIndex);
                }
                // Reset focus to last item if the input is removed
                else if (this.state.items.length > oldState.items.length && !this.canAddItems()) {
                    this.resetFocus(this.state.items.length - 1);
                }
            }
        }
    };
    BasePicker.prototype.componentWillUnmount = function () {
        if (this.currentPromise) {
            this.currentPromise = undefined;
        }
        this._async.dispose();
    };
    BasePicker.prototype.focus = function () {
        if (this.input.current) {
            this.input.current.focus();
        }
    };
    BasePicker.prototype.focusInput = function () {
        if (this.input.current) {
            this.input.current.focus();
        }
    };
    BasePicker.prototype.completeSuggestion = function (forceComplete) {
        if (this.suggestionStore.hasSelectedSuggestion() && this.input.current) {
            this.completeSelection(this.suggestionStore.currentSuggestion.item);
        }
        else if (forceComplete) {
            this._completeGenericSuggestion();
        }
    };
    BasePicker.prototype.render = function () {
        var _a, _b;
        var _c = this.state, suggestedDisplayValue = _c.suggestedDisplayValue, isFocused = _c.isFocused, items = _c.items;
        var _d = this.props, className = _d.className, inputProps = _d.inputProps, disabled = _d.disabled, selectionAriaLabel = _d.selectionAriaLabel, _e = _d.selectionRole, selectionRole = _e === void 0 ? 'list' : _e, theme = _d.theme, styles = _d.styles;
        var suggestionsAvailable = this.state.suggestionsVisible ? this._ariaMap.suggestionList : '';
        // TODO
        // Clean this up by leaving only the first part after removing support for SASS.
        // Currently we can not remove the SASS styles from BasePicker class because it
        // might be used by consumers who created custom pickers from extending from
        // this base class and have not used the new 'styles' prop.
        // We check for 'styles' prop which is going to be injected by the 'styled' HOC
        // for every other already existing picker variant (PeoplePicker, TagPicker)
        // so that we can use the CSS-in-JS styles. If the check fails (ex: custom picker),
        // then we just use the old SASS styles instead.
        var classNames = styles
            ? getClassNames(styles, {
                theme: theme,
                className: className,
                isFocused: isFocused,
                disabled: disabled,
                inputClassName: inputProps && inputProps.className,
            })
            : {
                root: css('ms-BasePicker', className ? className : ''),
                text: css('ms-BasePicker-text', legacyStyles.pickerText, this.state.isFocused && legacyStyles.inputFocused),
                itemsWrapper: legacyStyles.pickerItems,
                input: css('ms-BasePicker-input', legacyStyles.pickerInput, inputProps && inputProps.className),
                screenReaderText: legacyStyles.screenReaderOnly,
            };
        var comboLabel = this.props['aria-label'] || ((_a = inputProps) === null || _a === void 0 ? void 0 : _a['aria-label']);
        // selectionAriaLabel is contained in a separate <span> rather than an aria-label on the items list
        // because if the items list has an aria-label, the aria-describedby on the input will only read
        // that label instead of all the selected items. Using aria-labelledby instead fixes this, since
        // aria-describedby and aria-labelledby will not follow a second aria-labelledby
        return (React.createElement("div", { ref: this.root, className: classNames.root, onKeyDown: this.onKeyDown, onFocus: this.onFocus, onBlur: this.onBlur },
            this.getSuggestionsAlert(classNames.screenReaderText),
            React.createElement("span", { id: this._ariaMap.selectedItems + "-label", hidden: true }, selectionAriaLabel || comboLabel),
            React.createElement(SelectionZone, { selection: this.selection, selectionMode: SelectionMode.multiple },
                React.createElement("div", { className: classNames.text },
                    items.length > 0 && (React.createElement("span", { id: this._ariaMap.selectedItems, className: classNames.itemsWrapper, role: selectionRole, "aria-labelledby": this._ariaMap.selectedItems + "-label" }, this.renderItems())),
                    this.canAddItems() && (React.createElement(Autofill, __assign({ spellCheck: false }, inputProps, { className: classNames.input, componentRef: this.input, id: ((_b = inputProps) === null || _b === void 0 ? void 0 : _b.id) ? inputProps.id : this._ariaMap.combobox, onClick: this.onClick, onFocus: this.onInputFocus, onBlur: this.onInputBlur, onInputValueChange: this.onInputChange, suggestedDisplayValue: suggestedDisplayValue, "aria-activedescendant": this.getActiveDescendant(), "aria-controls": suggestionsAvailable, "aria-describedby": items.length > 0 ? this._ariaMap.selectedItems : undefined, "aria-expanded": !!this.state.suggestionsVisible, "aria-haspopup": "listbox", "aria-label": comboLabel, role: "combobox", disabled: disabled, onInputChange: this.props.onInputChange }))))),
            this.renderSuggestions()));
    };
    BasePicker.prototype.canAddItems = function () {
        var items = this.state.items;
        var itemLimit = this.props.itemLimit;
        return itemLimit === undefined || items.length < itemLimit;
    };
    BasePicker.prototype.renderSuggestions = function () {
        var StyledTypedSuggestions = this._styledSuggestions;
        return this.state.suggestionsVisible && this.input ? (React.createElement(Callout, __assign({ isBeakVisible: false, gapSpace: 5, target: this.input.current ? this.input.current.inputElement : undefined, onDismiss: this.dismissSuggestions, directionalHint: DirectionalHint.bottomLeftEdge, directionalHintForRTL: DirectionalHint.bottomRightEdge }, this.props.pickerCalloutProps),
            React.createElement(StyledTypedSuggestions
            // Assumed to set in derived component's defaultProps
            , __assign({ 
                // Assumed to set in derived component's defaultProps
                onRenderSuggestion: this.props.onRenderSuggestionsItem, onSuggestionClick: this.onSuggestionClick, onSuggestionRemove: this.onSuggestionRemove, suggestions: this.suggestionStore.getSuggestions(), componentRef: this.suggestionElement, onGetMoreResults: this.onGetMoreResults, moreSuggestionsAvailable: this.state.moreSuggestionsAvailable, isLoading: this.state.suggestionsLoading, isSearching: this.state.isSearching, isMostRecentlyUsedVisible: this.state.isMostRecentlyUsedVisible, isResultsFooterVisible: this.state.isResultsFooterVisible, refocusSuggestions: this.refocusSuggestions, removeSuggestionAriaLabel: this.props.removeButtonAriaLabel, suggestionsListId: this._ariaMap.suggestionList, createGenericItem: this._completeGenericSuggestion }, this.props.pickerSuggestionsProps)))) : null;
    };
    BasePicker.prototype.renderItems = function () {
        var _this = this;
        var _a = this.props, disabled = _a.disabled, removeButtonAriaLabel = _a.removeButtonAriaLabel;
        var onRenderItem = this.props.onRenderItem;
        var _b = this.state, items = _b.items, selectedIndices = _b.selectedIndices;
        return items.map(function (item, index) {
            return onRenderItem({
                item: item,
                index: index,
                key: item.key ? item.key : index,
                selected: selectedIndices.indexOf(index) !== -1,
                onRemoveItem: function () { return _this.removeItem(item, true); },
                disabled: disabled,
                onItemChange: _this.onItemChange,
                removeButtonAriaLabel: removeButtonAriaLabel,
            });
        });
    };
    BasePicker.prototype.resetFocus = function (index) {
        var items = this.state.items;
        if (items.length && index >= 0) {
            var newEl = this.root.current &&
                this.root.current.querySelectorAll('[data-selection-index]')[Math.min(index, items.length - 1)];
            if (newEl) {
                newEl.focus();
            }
        }
        else if (!this.canAddItems()) {
            this.resetFocus(items.length - 1);
        }
        else {
            if (this.input.current) {
                this.input.current.focus();
            }
        }
    };
    BasePicker.prototype.onSuggestionSelect = function () {
        if (this.suggestionStore.currentSuggestion) {
            var currentValue = this.input.current ? this.input.current.value : '';
            var itemValue = this._getTextFromItem(this.suggestionStore.currentSuggestion.item, currentValue);
            this.setState({ suggestedDisplayValue: itemValue });
        }
    };
    BasePicker.prototype.onSelectionChange = function () {
        this.setState({
            selectedIndices: this.selection.getSelectedIndices(),
        });
    };
    BasePicker.prototype.updateSuggestions = function (suggestions) {
        this.suggestionStore.updateSuggestions(suggestions, 0);
        this.forceUpdate();
    };
    /**
     * Only to be called when there is nothing in the input. Checks to see if the consumer has
     * provided a function to resolve suggestions
     */
    BasePicker.prototype.onEmptyInputFocus = function () {
        var emptyResolveSuggestions = this.props.onEmptyResolveSuggestions
            ? this.props.onEmptyResolveSuggestions
            : // eslint-disable-next-line deprecation/deprecation
                this.props.onEmptyInputFocus;
        // Only attempt to resolve suggestions if it exists
        if (emptyResolveSuggestions) {
            var suggestions = emptyResolveSuggestions(this.state.items);
            this.updateSuggestionsList(suggestions);
            this.setState({
                isMostRecentlyUsedVisible: true,
                suggestionsVisible: true,
                moreSuggestionsAvailable: false,
            });
        }
    };
    BasePicker.prototype.updateValue = function (updatedValue) {
        this._onResolveSuggestions(updatedValue);
    };
    BasePicker.prototype.updateSuggestionsList = function (suggestions, updatedValue) {
        var _this = this;
        var suggestionsArray = suggestions;
        var suggestionsPromiseLike = suggestions;
        // Check to see if the returned value is an array, if it is then just pass it into the next function .
        // If the returned value is not an array then check to see if it's a promise or PromiseLike.
        // If it is then resolve it asynchronously.
        if (Array.isArray(suggestionsArray)) {
            this._updateAndResolveValue(updatedValue, suggestionsArray);
        }
        else if (suggestionsPromiseLike && suggestionsPromiseLike.then) {
            this.setState({
                suggestionsLoading: true,
            });
            // Clear suggestions
            this.suggestionStore.updateSuggestions([]);
            if (updatedValue !== undefined) {
                this.setState({
                    suggestionsVisible: this._getShowSuggestions(),
                });
            }
            else {
                this.setState({
                    suggestionsVisible: this.input.current && this.input.current.inputElement === document.activeElement,
                });
            }
            // Ensure that the promise will only use the callback if it was the most recent one.
            var promise_1 = (this.currentPromise = suggestionsPromiseLike);
            promise_1.then(function (newSuggestions) {
                if (promise_1 === _this.currentPromise) {
                    _this._updateAndResolveValue(updatedValue, newSuggestions);
                }
            });
        }
    };
    BasePicker.prototype.resolveNewValue = function (updatedValue, suggestions) {
        var _this = this;
        this.updateSuggestions(suggestions);
        var itemValue = undefined;
        if (this.suggestionStore.currentSuggestion) {
            itemValue = this._getTextFromItem(this.suggestionStore.currentSuggestion.item, updatedValue);
        }
        // Only set suggestionloading to false after there has been time for the new suggestions to flow
        // to the suggestions list. This is to ensure that the suggestions are available before aria-activedescendant
        // is set so that screen readers will read out the first selected option.
        this.setState({
            suggestedDisplayValue: itemValue,
            suggestionsVisible: this._getShowSuggestions(),
        }, function () { return _this.setState({ suggestionsLoading: false }); });
    };
    BasePicker.prototype.onChange = function (items) {
        if (this.props.onChange) {
            this.props.onChange(items);
        }
    };
    // This is protected because we may expect the backspace key to work differently in a different kind of picker.
    // This lets the subclass override it and provide it's own onBackspace. For an example see the BasePickerListBelow
    BasePicker.prototype.onBackspace = function (ev) {
        if ((this.state.items.length && !this.input.current) ||
            (this.input.current && !this.input.current.isValueSelected && this.input.current.cursorLocation === 0)) {
            if (this.selection.getSelectedCount() > 0) {
                this.removeItems(this.selection.getSelection());
            }
            else {
                this.removeItem(this.state.items[this.state.items.length - 1]);
            }
        }
    };
    BasePicker.prototype.getActiveDescendant = function () {
        if (this.state.suggestionsLoading) {
            return undefined;
        }
        var currentIndex = this.suggestionStore.currentIndex;
        // if the suggestions element has actions and the currentIndex does not point to a suggestion, return the action id
        if (currentIndex < 0 && this.suggestionElement.current && this.suggestionElement.current.hasSuggestedAction()) {
            return 'sug-selectedAction';
        }
        return currentIndex > -1 && !this.state.suggestionsLoading ? 'sug-' + currentIndex : undefined;
    };
    BasePicker.prototype.getSuggestionsAlert = function (suggestionAlertClassName) {
        if (suggestionAlertClassName === void 0) { suggestionAlertClassName = legacyStyles.screenReaderOnly; }
        var currentIndex = this.suggestionStore.currentIndex;
        if (this.props.enableSelectedSuggestionAlert) {
            var selectedSuggestion = currentIndex > -1 ? this.suggestionStore.getSuggestionAtIndex(this.suggestionStore.currentIndex) : undefined;
            var selectedSuggestionAlertText = selectedSuggestion ? selectedSuggestion.ariaLabel : undefined;
            return (React.createElement("div", { className: suggestionAlertClassName, role: "alert", id: this._ariaMap.selectedSuggestionAlert, "aria-live": "assertive" },
                selectedSuggestionAlertText,
                ' '));
        }
    };
    /**
     * Takes in the current updated value and either resolves it with the new suggestions
     * or if updated value is undefined then it clears out currently suggested items
     */
    BasePicker.prototype._updateAndResolveValue = function (updatedValue, newSuggestions) {
        if (updatedValue !== undefined) {
            this.resolveNewValue(updatedValue, newSuggestions);
        }
        else {
            this.suggestionStore.updateSuggestions(newSuggestions, -1);
            if (this.state.suggestionsLoading) {
                this.setState({
                    suggestionsLoading: false,
                });
            }
        }
    };
    /**
     * Controls what happens whenever there is an action that impacts the selected items.
     * If `selectedItems` is provided, this will act as a controlled component and it will not update its own state.
     */
    BasePicker.prototype._updateSelectedItems = function (items) {
        var _this = this;
        if (this.props.selectedItems) {
            // If the component is a controlled component then the controlling component will need to add or remove the items.
            this.onChange(items);
        }
        else {
            this.setState({ items: items }, function () {
                _this._onSelectedItemsUpdated(items);
            });
        }
    };
    BasePicker.prototype._onSelectedItemsUpdated = function (items) {
        this.onChange(items);
    };
    /**
     * Suggestions are normally shown after the user updates text and the text
     * is non-empty, but also when the user clicks on the input element.
     * @returns True if suggestions should be shown.
     */
    BasePicker.prototype._getShowSuggestions = function () {
        var areSuggestionsVisible = this.input.current !== undefined &&
            this.input.current !== null &&
            this.input.current.inputElement === document.activeElement &&
            this.input.current.value !== '';
        return areSuggestionsVisible;
    };
    BasePicker.prototype._getTextFromItem = function (item, currentValue) {
        if (this.props.getTextFromItem) {
            return this.props.getTextFromItem(item, currentValue);
        }
        else {
            return '';
        }
    };
    return BasePicker;
}(React.Component));
export { BasePicker };
var BasePickerListBelow = /** @class */ (function (_super) {
    __extends(BasePickerListBelow, _super);
    function BasePickerListBelow() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    BasePickerListBelow.prototype.render = function () {
        var _a, _b;
        var _c = this.state, suggestedDisplayValue = _c.suggestedDisplayValue, isFocused = _c.isFocused;
        var _d = this.props, className = _d.className, inputProps = _d.inputProps, disabled = _d.disabled, selectionAriaLabel = _d.selectionAriaLabel, _e = _d.selectionRole, selectionRole = _e === void 0 ? 'list' : _e, theme = _d.theme, styles = _d.styles;
        var suggestionsAvailable = this.state.suggestionsVisible ? this._ariaMap.suggestionList : '';
        // TODO
        // Clean this up by leaving only the first part after removing support for SASS.
        // Currently we can not remove the SASS styles from BasePicker class because it
        // might be used by consumers who created custom pickers from extending from
        // this base class and have not used the new 'styles' prop.
        // We check for 'styles' prop which is going to be injected by the 'styled' HOC
        // for every other already existing picker variant (PeoplePicker, TagPicker)
        // so that we can use the CSS-in-JS styles. If the check fails (ex: custom picker),
        // then we just use the old SASS styles instead.
        var classNames = styles
            ? getClassNames(styles, {
                theme: theme,
                className: className,
                isFocused: isFocused,
                inputClassName: inputProps && inputProps.className,
            })
            : {
                root: css('ms-BasePicker', className ? className : ''),
                text: css('ms-BasePicker-text', legacyStyles.pickerText, this.state.isFocused && legacyStyles.inputFocused, disabled && legacyStyles.inputDisabled),
                itemsWrapper: legacyStyles.pickerItems,
                input: css('ms-BasePicker-input', legacyStyles.pickerInput, inputProps && inputProps.className),
                screenReaderText: legacyStyles.screenReaderOnly,
            };
        var comboLabel = this.props['aria-label'] || ((_a = inputProps) === null || _a === void 0 ? void 0 : _a['aria-label']);
        return (React.createElement("div", { ref: this.root, onBlur: this.onBlur, onFocus: this.onFocus },
            React.createElement("div", { className: classNames.root, onKeyDown: this.onKeyDown },
                this.getSuggestionsAlert(classNames.screenReaderText),
                React.createElement("div", { className: classNames.text },
                    React.createElement(Autofill, __assign({}, inputProps, { className: classNames.input, componentRef: this.input, onFocus: this.onInputFocus, onBlur: this.onInputBlur, onClick: this.onClick, onInputValueChange: this.onInputChange, suggestedDisplayValue: suggestedDisplayValue, "aria-activedescendant": this.getActiveDescendant(), "aria-controls": suggestionsAvailable || undefined, "aria-expanded": !!this.state.suggestionsVisible, "aria-haspopup": "listbox", "aria-label": comboLabel, role: "combobox", id: ((_b = inputProps) === null || _b === void 0 ? void 0 : _b.id) ? inputProps.id : this._ariaMap.combobox, disabled: disabled, onInputChange: this.props.onInputChange })))),
            this.renderSuggestions(),
            React.createElement(SelectionZone, { selection: this.selection, selectionMode: SelectionMode.single },
                React.createElement("div", { id: this._ariaMap.selectedItems, className: "ms-BasePicker-selectedItems" // just a className hook without any styles applied to it.
                    , role: selectionRole, "aria-label": selectionAriaLabel || comboLabel }, this.renderItems()))));
    };
    BasePickerListBelow.prototype.onBackspace = function (ev) {
        // override the existing backspace method to not do anything because the list items appear below.
    };
    return BasePickerListBelow;
}(BasePicker));
export { BasePickerListBelow };
//# sourceMappingURL=BasePicker.js.map