define(["require", "exports", "tslib", "react", "../../Callout", "../../Label", "../../Button", "../pickers/AutoFill/BaseAutoFill", "../../Utilities", "../../utilities/selectableOption/SelectableOption.types", "./ComboBox.styles", "./ComboBox.classNames"], function (require, exports, tslib_1, React, Callout_1, Label_1, Button_1, BaseAutoFill_1, Utilities_1, SelectableOption_types_1, ComboBox_styles_1, ComboBox_classNames_1) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var SearchDirection;
    (function (SearchDirection) {
        SearchDirection[SearchDirection["backward"] = -1] = "backward";
        SearchDirection[SearchDirection["none"] = 0] = "none";
        SearchDirection[SearchDirection["forward"] = 1] = "forward";
    })(SearchDirection || (SearchDirection = {}));
    var HoverStatus;
    (function (HoverStatus) {
        // This is used when the user was hovering
        // and has since moused out of the menu items
        HoverStatus[HoverStatus["clearAll"] = -2] = "clearAll";
        // This is the default "normal" state
        // when no hover has happened or a hover is in progress
        HoverStatus[HoverStatus["default"] = -1] = "default";
    })(HoverStatus || (HoverStatus = {}));
    var ComboBox = /** @class */ (function (_super) {
        tslib_1.__extends(ComboBox, _super);
        function ComboBox(props) {
            var _this = _super.call(this, props) || this;
            // This is used to clear any pending autocomplete
            // text (used when autocomplete is true and allowFreeform is false)
            _this._readOnlyPendingAutoCompleteTimeout = 1000 /* ms */;
            _this._scrollIdleDelay = 250 /* ms */;
            _this._onOptionMouseLeave = function () {
                if (!_this._isScrollIdle) {
                    return;
                }
                _this.setState({
                    currentPendingValueValidIndexOnHover: HoverStatus.clearAll
                });
            };
            _this._warnMutuallyExclusive({
                'defaultSelectedKey': 'selectedKey',
                'value': 'defaultSelectedKey',
                'selectedKey': 'value',
                'dropdownWidth': 'useComboBoxAsMenuWidth'
            });
            _this._id = props.id || Utilities_1.getId('ComboBox');
            var selectedKey = props.defaultSelectedKey !== undefined ? props.defaultSelectedKey : props.selectedKey;
            _this._isScrollIdle = true;
            var index = _this._getSelectedIndex(props.options, selectedKey);
            _this.state = {
                isOpen: false,
                selectedIndex: index,
                focused: false,
                suggestedDisplayValue: '',
                currentOptions: _this.props.options,
                currentPendingValueValidIndex: -1,
                currentPendingValue: '',
                currentPendingValueValidIndexOnHover: HoverStatus.default
            };
            return _this;
        }
        ComboBox.prototype.componentDidMount = function () {
            // hook up resolving the options if needed on focus
            this._events.on(this._comboBoxWrapper, 'focus', this._onResolveOptions, true);
        };
        ComboBox.prototype.componentWillReceiveProps = function (newProps) {
            // Update the selectedIndex and currentOptions state if
            // the selectedKey, value, or options have changed
            if (newProps.selectedKey !== this.props.selectedKey ||
                newProps.value !== this.props.value ||
                newProps.options !== this.props.options) {
                var index = this._getSelectedIndex(newProps.options, newProps.selectedKey);
                this.setState({
                    selectedIndex: index,
                    currentOptions: newProps.options
                });
            }
        };
        ComboBox.prototype.componentDidUpdate = function (prevProps, prevState) {
            var _this = this;
            var _a = this.props, allowFreeform = _a.allowFreeform, value = _a.value, onMenuOpen = _a.onMenuOpen;
            var _b = this.state, isOpen = _b.isOpen, focused = _b.focused, selectedIndex = _b.selectedIndex, currentPendingValueValidIndex = _b.currentPendingValueValidIndex;
            // If we are newly open or are open and the pending valid index changed,
            // make sure the currently selected/pending option is scrolled into view
            if (isOpen &&
                (!prevState.isOpen ||
                    prevState.currentPendingValueValidIndex !== currentPendingValueValidIndex)) {
                // Need this timeout so that the selectedElement ref is correctly updated
                this._async.setTimeout(function () { return _this._scrollIntoView(); }, 0);
            }
            // If we are open or we are focused but are not the activeElement,
            // set focus on the input
            if (isOpen || (focused && document.activeElement !== this._comboBox.inputElement)) {
                this.focus();
            }
            // If we just opened/closed the menu OR
            // are focused AND
            //   updated the selectedIndex with the menu closed OR
            //   are not allowing freeform OR
            //   the value changed
            // we need to set selection
            if (prevState.isOpen !== isOpen ||
                (focused &&
                    ((!isOpen && prevState.selectedIndex !== selectedIndex) ||
                        !allowFreeform ||
                        value !== prevProps.value))) {
                this._select();
            }
            if (isOpen && !prevState.isOpen && onMenuOpen) {
                onMenuOpen();
            }
        };
        ComboBox.prototype.componentWillUnmount = function () {
            _super.prototype.componentWillUnmount.call(this);
            // remove the eventHanlder that was added in componentDidMount
            this._events.off(this._comboBoxWrapper);
        };
        // Primary Render
        ComboBox.prototype.render = function () {
            var id = this._id;
            var _a = this.props, className = _a.className, label = _a.label, disabled = _a.disabled, ariaLabel = _a.ariaLabel, required = _a.required, errorMessage = _a.errorMessage, _b = _a.onRenderContainer, onRenderContainer = _b === void 0 ? this._onRenderContainer : _b, _c = _a.onRenderList, onRenderList = _c === void 0 ? this._onRenderList : _c, _d = _a.onRenderItem, onRenderItem = _d === void 0 ? this._onRenderItem : _d, _e = _a.onRenderOption, onRenderOption = _e === void 0 ? this._onRenderOption : _e, allowFreeform = _a.allowFreeform, autoComplete = _a.autoComplete, buttonIconProps = _a.buttonIconProps, customStyles = _a.styles, theme = _a.theme;
            var _f = this.state, isOpen = _f.isOpen, selectedIndex = _f.selectedIndex, focused = _f.focused, suggestedDisplayValue = _f.suggestedDisplayValue;
            this._currentVisibleValue = this._getVisibleValue();
            var divProps = Utilities_1.getNativeProps(this.props, Utilities_1.divProperties);
            var hasErrorMessage = (errorMessage && errorMessage.length > 0) ? true : false;
            this._classNames = ComboBox_classNames_1.getClassNames(ComboBox_styles_1.getStyles(theme, customStyles), className, !!isOpen, !!disabled, !!required, !!focused, !!allowFreeform, !!hasErrorMessage);
            return (React.createElement("div", tslib_1.__assign({}, divProps, { ref: 'root', className: this._classNames.container }),
                label && (React.createElement(Label_1.Label, { id: id + '-label', disabled: disabled, required: required, htmlFor: id, className: this._classNames.label }, label)),
                React.createElement("div", { ref: this._resolveRef('_comboBoxWrapper'), id: id + 'wrapper', className: this._classNames.root },
                    React.createElement(BaseAutoFill_1.BaseAutoFill, { "data-is-interactable": !disabled, ref: this._resolveRef('_comboBox'), id: id + '-input', className: this._classNames.input, type: 'text', onFocus: this._select, onBlur: this._onBlur, onKeyDown: this._onInputKeyDown, onKeyUp: this._onInputKeyUp, onClick: allowFreeform ? this.focus : this._onComboBoxClick, onInputValueChange: this._onInputChange, "aria-expanded": isOpen, "aria-autocomplete": (!disabled && autoComplete === 'on'), role: 'combobox', "aria-readonly": ((allowFreeform || disabled) ? null : 'true'), readOnly: disabled || !allowFreeform, "aria-labelledby": (label && (id + '-label')), "aria-label": ((ariaLabel && !label) && ariaLabel), "aria-describedby": (id + '-option'), "aria-activedescendant": (isOpen && selectedIndex >= 0 ? (id + '-list' + selectedIndex) : null), "aria-disabled": disabled, "aria-owns": (id + '-list'), spellCheck: false, defaultVisibleValue: this._currentVisibleValue, suggestedDisplayValue: suggestedDisplayValue, updateValueInWillReceiveProps: this._onUpdateValueInAutoFillWillReceiveProps, shouldSelectFullInputValueInComponentDidUpdate: this._onShouldSelectFullInputValueInAutoFillComponentDidUpdate }),
                    React.createElement(Button_1.IconButton, { className: 'ms-ComboBox-CaretDown-button', styles: this._getCaretButtonStyles(), role: 'presentation', "aria-hidden": 'true', tabIndex: -1, onClick: this._onComboBoxClick, iconProps: buttonIconProps, disabled: disabled, checked: isOpen })),
                isOpen && (onRenderContainer(tslib_1.__assign({}, this.props, { onRenderList: onRenderList,
                    onRenderItem: onRenderItem,
                    onRenderOption: onRenderOption, options: this.state.currentOptions.map(function (item, index) { return (tslib_1.__assign({}, item, { index: index })); }) }), this._onRenderContainer)),
                errorMessage &&
                    React.createElement("div", { className: this._classNames.errorMessage }, errorMessage)));
        };
        /**
         * Set focus on the input
         */
        ComboBox.prototype.focus = function () {
            if (this._comboBox) {
                this._comboBox.focus();
            }
        };
        /**
         * Close menu callout if it is open
         */
        ComboBox.prototype.dismissMenu = function () {
            var isOpen = this.state.isOpen;
            isOpen && this.setState({ isOpen: false });
        };
        /**
         * componentWillReceiveProps handler for the auto fill component
         * Checks/updates the iput value to set, if needed
         * @param {IBaseAutoFillProps} defaultVisibleValue - the defaultVisibleValue that got passed
         *  in to the auto fill's componentWillReceiveProps
         * @returns {string} - the updated value to set, if needed
         */
        ComboBox.prototype._onUpdateValueInAutoFillWillReceiveProps = function () {
            if (this._comboBox === null || this._comboBox === undefined) {
                return null;
            }
            if (this._currentVisibleValue && this._currentVisibleValue !== '' && this._comboBox.value !== this._currentVisibleValue) {
                return this._currentVisibleValue;
            }
            return this._comboBox.value;
        };
        /**
         * componentDidUpdate handler for the auto fill component
         *
         * @param { string } defaultVisibleValue - the current defaultVisibleValue in the auto fill's componentDidUpdate
         * @param { string } suggestedDisplayValue - the current suggestedDisplayValue in the auto fill's componentDidUpdate
         * @returns {boolean} - should the full value of the input be selected?
         * True if the defaultVisibleValue equals the suggestedDisplayValue, false otherwise
         */
        ComboBox.prototype._onShouldSelectFullInputValueInAutoFillComponentDidUpdate = function () {
            return this._currentVisibleValue === this.state.suggestedDisplayValue;
        };
        /**
         * Get the correct value to pass to the input
         * to show to the user based off of the current props and state
         * @returns {string} the value to pass to the input
         */
        ComboBox.prototype._getVisibleValue = function () {
            var _a = this.props, value = _a.value, allowFreeform = _a.allowFreeform, autoComplete = _a.autoComplete;
            var _b = this.state, selectedIndex = _b.selectedIndex, currentPendingValueValidIndex = _b.currentPendingValueValidIndex, currentOptions = _b.currentOptions, currentPendingValue = _b.currentPendingValue, suggestedDisplayValue = _b.suggestedDisplayValue, isOpen = _b.isOpen;
            var currentPendingIndexValid = this._indexWithinBounds(currentOptions, currentPendingValueValidIndex);
            // If the user passed is a value prop, use that
            // unless we are open and have a valid current pending index
            if (!(isOpen && currentPendingIndexValid) && (value && !currentPendingValue)) {
                return value;
            }
            var index = selectedIndex;
            if (allowFreeform) {
                // If we are allowing freeform and autocomplete is also true
                // and we've got a pending value that matches an option, remember
                // the matched option's index
                if (autoComplete === 'on' && currentPendingIndexValid) {
                    index = currentPendingValueValidIndex;
                }
                // Since we are allowing freeform, if there is currently a nonempty pending value, use that
                // otherwise use the index determined above (falling back to '' if we did not get a valid index)
                return currentPendingValue !== '' ? currentPendingValue : (this._indexWithinBounds(currentOptions, index) ? currentOptions[index].text : '');
            }
            else {
                // If we are not allowing freeform and have a
                // valid index that matches the pending value,
                // we know we will need some version of the pending value
                if (currentPendingIndexValid) {
                    // If autoComplete is on, return the
                    // raw pending value, otherwise remember
                    // the matched option's index
                    if (autoComplete === 'on') {
                        return currentPendingValue;
                    }
                    index = currentPendingValueValidIndex;
                }
                // If we have a valid index then return the text value of that option,
                // otherwise return the suggestedDisplayValue
                return this._indexWithinBounds(currentOptions, index) ? currentOptions[index].text : suggestedDisplayValue;
            }
        };
        /**
         * Is the index within the bounds of the array?
         * @param options - options to check if the index is valid for
         * @param index - the index to check
         * @returns {boolean} - true if the index is valid for the given options, false otherwise
         */
        ComboBox.prototype._indexWithinBounds = function (options, index) {
            if (!options) {
                return false;
            }
            return index >= 0 && index < options.length;
        };
        /**
         * Handler for typing changes on the input
         * @param updatedValue - the newly changed value
         */
        ComboBox.prototype._onInputChange = function (updatedValue) {
            if (this.props.disabled) {
                this._handleInputWhenDisabled(null /* event */);
                return;
            }
            this.props.allowFreeform ?
                this._processInputChangeWithFreeform(updatedValue) :
                this._processInputChangeWithoutFreeform(updatedValue);
        };
        /**
         * Process the new input's new value when the comboBox
         * allows freeform entry
         * @param updatedValue - the input's newly changed value
         */
        ComboBox.prototype._processInputChangeWithFreeform = function (updatedValue) {
            var currentOptions = this.state.currentOptions;
            // if the new value is empty, nothing needs to be done
            if (updatedValue === '') {
                return;
            }
            // Remember the original value and then,
            // make the value lowercase for comparison
            var originalUpdatedValue = updatedValue;
            updatedValue = updatedValue.toLocaleLowerCase();
            var newSuggestedDisplayValue = '';
            var newCurrentPendingValueValidIndex = -1;
            // If autoComplete is on, attempt to find a match from the available options
            if (this.props.autoComplete === 'on') {
                // If autoComplete is on, attempt to find a match where the text of an option starts with the updated value
                var items = currentOptions.map(function (item, index) { return tslib_1.__assign({}, item, { index: index }); }).filter(function (option) { return option.itemType !== SelectableOption_types_1.SelectableOptionMenuItemType.Header && option.itemType !== SelectableOption_types_1.SelectableOptionMenuItemType.Divider; }).filter(function (option) { return option.text.toLocaleLowerCase().indexOf(updatedValue) === 0; });
                if (items.length > 0) {
                    // If the user typed out the complete option text, we don't need any suggested display text anymore
                    newSuggestedDisplayValue = items[0].text.toLocaleLowerCase() !== updatedValue ? items[0].text : '';
                    // remember the index of the match we found
                    newCurrentPendingValueValidIndex = items[0].index;
                }
            }
            else {
                // If autoComplete is off, attempt to find a match only when the value is exactly equal to the text of an option
                var items = currentOptions.map(function (item, index) { return tslib_1.__assign({}, item, { index: index }); }).filter(function (option) { return option.itemType !== SelectableOption_types_1.SelectableOptionMenuItemType.Header && option.itemType !== SelectableOption_types_1.SelectableOptionMenuItemType.Divider; }).filter(function (option) { return option.text.toLocaleLowerCase() === updatedValue; });
                // if we fould a match remember the index
                if (items.length === 1) {
                    newCurrentPendingValueValidIndex = items[0].index;
                }
            }
            // Set the updated state
            this._setPendingInfo(originalUpdatedValue, newCurrentPendingValueValidIndex, newSuggestedDisplayValue);
        };
        /**
         * Process the new input's new value when the comboBox
         * does not allow freeform entry
         * @param updatedValue - the input's newly changed value
         */
        ComboBox.prototype._processInputChangeWithoutFreeform = function (updatedValue) {
            var _this = this;
            var _a = this.state, currentPendingValue = _a.currentPendingValue, currentPendingValueValidIndex = _a.currentPendingValueValidIndex, currentOptions = _a.currentOptions, selectedIndex = _a.selectedIndex;
            if (this.props.autoComplete === 'on') {
                // If autoComplete is on while allow freeform is off,
                // we will remember the keypresses and build up a string to attempt to match
                // as long as characters are typed within a the timeout span of each other,
                // otherwise we will clear the string and start building a new one on the next keypress.
                // Also, only do this processing if we have a non-empty value
                if (updatedValue !== '') {
                    // If we have a pending autocomplete clearing task,
                    // we know that the user is typing with keypresses happening
                    // within the timeout of each other so remove the clearing task
                    // and continue building the pending value with the udpated value
                    if (this._lastReadOnlyAutoCompleteChangeTimeoutId !== undefined) {
                        this._async.clearTimeout(this._lastReadOnlyAutoCompleteChangeTimeoutId);
                        this._lastReadOnlyAutoCompleteChangeTimeoutId = undefined;
                        updatedValue = currentPendingValue + updatedValue;
                    }
                    var originalUpdatedValue = updatedValue;
                    updatedValue = updatedValue.toLocaleLowerCase();
                    // If autoComplete is on, attempt to find a match where the text of an option starts with the updated value
                    var items = currentOptions.map(function (item, i) { return tslib_1.__assign({}, item, { index: i }); }).filter(function (option) { return option.itemType !== SelectableOption_types_1.SelectableOptionMenuItemType.Header && option.itemType !== SelectableOption_types_1.SelectableOptionMenuItemType.Divider; }).filter(function (option) { return option.text.toLocaleLowerCase().indexOf(updatedValue) === 0; });
                    // If we found a match, udpdate the state
                    if (items.length > 0) {
                        this._setPendingInfo(originalUpdatedValue, items[0].index, items[0].text);
                    }
                    // Schedule a timeout to clear the pending value after the timeout span
                    this._lastReadOnlyAutoCompleteChangeTimeoutId =
                        this._async.setTimeout(function () { _this._lastReadOnlyAutoCompleteChangeTimeoutId = undefined; }, this._readOnlyPendingAutoCompleteTimeout);
                    return;
                }
            }
            // If we get here, either autoComplete is on or we did not find a match with autoComplete on.
            // Remember we are not allowing freeform, so at this point, if we have a pending valid value index
            // use that; otherwise use the selectedIndex
            var index = currentPendingValueValidIndex >= 0 ? currentPendingValueValidIndex : selectedIndex;
            // Since we are not allowing freeform, we need to
            // set both the pending and suggested values/index
            // to allow us to select all content in the input to
            // give the illusion that we are readonly (e.g. freeform off)
            this._setPendingInfoFromIndex(index);
        };
        /**
         * Walk along the options starting at the index, stepping by the delta (positive or negative)
         * looking for the next valid selectable index (e.g. skipping headings and dividers)
         * @param index - the index to get the next selectable index from
         * @param delta - optional delta to step by when finding the next index, defaults to 0
         * @returns {number} - the next valid selectable index. If the new index is outside of the bounds,
         * it will snap to the edge of the options array. If delta == 0 and the given index is not selectable
         */
        ComboBox.prototype._getNextSelectableIndex = function (index, searchDirection) {
            var currentOptions = this.state.currentOptions;
            var newIndex = index + searchDirection;
            newIndex = Math.max(0, Math.min(currentOptions.length - 1, newIndex));
            var option = currentOptions[newIndex];
            // attempt to skip headers and dividers
            if ((option.itemType === SelectableOption_types_1.SelectableOptionMenuItemType.Header ||
                option.itemType === SelectableOption_types_1.SelectableOptionMenuItemType.Divider)) {
                // Should we continue looking for an index to select?
                if (searchDirection !== SearchDirection.none &&
                    ((newIndex !== 0 && searchDirection < SearchDirection.none) ||
                        (newIndex !== currentOptions.length - 1 && searchDirection > SearchDirection.none))) {
                    newIndex = this._getNextSelectableIndex(newIndex, searchDirection);
                }
                else {
                    // If we cannot perform a useful search just return the index we were given
                    return index;
                }
            }
            // We have the next valid selectable index, return it
            return newIndex;
        };
        /**
         * Set the selected index. Note, this is
         * the "real" selected index, not the pending selected index
         * @param index - the index to set (or the index to set from if a search direction is provided)
         * @param searchDirection - the direction to search along the options from the given index
         */
        ComboBox.prototype._setSelectedIndex = function (index, searchDirection) {
            if (searchDirection === void 0) { searchDirection = SearchDirection.none; }
            var onChanged = this.props.onChanged;
            var _a = this.state, selectedIndex = _a.selectedIndex, currentOptions = _a.currentOptions;
            // Find the next selectable index, if searchDirection is none
            // we will get our starting index back
            index = this._getNextSelectableIndex(index, searchDirection);
            // Are we at a new index? If so, update the state, otherwise
            // there is nothing to do
            if (index !== selectedIndex) {
                var option = currentOptions[index];
                // Set the selected option
                this.setState({
                    selectedIndex: index
                });
                // Did the creator give us an onChanged callback?
                if (onChanged) {
                    onChanged(option, index);
                }
                // if we have a new selected index,
                // clear all of the pending info
                this._clearPendingInfo();
            }
        };
        /**
         * Focus (and select) the content of the input
         * and set the focused state
         */
        ComboBox.prototype._select = function () {
            this._comboBox.inputElement.select();
            if (!this.state.focused) {
                this.setState({ focused: true });
            }
        };
        /**
         * Callback issued when the options should be resolved, if they have been updated or
         * if they need to be passed in the first time. This only does work if an onResolveOptions
         * callback was passed in
         */
        ComboBox.prototype._onResolveOptions = function () {
            var _this = this;
            if (this.props.onResolveOptions) {
                // get the options
                var newOptions = this.props.onResolveOptions(tslib_1.__assign({}, this.state.currentOptions));
                // Check to see if the returned value is an array, if it is update the state
                // 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(newOptions)) {
                    this.setState({
                        currentOptions: newOptions
                    });
                }
                else if (newOptions && newOptions.then) {
                    // Ensure that the promise will only use the callback if it was the most recent one
                    // and update the state when the promise returns
                    var promise_1 = this._currentPromise = newOptions;
                    promise_1.then(function (newOptionsFromPromise) {
                        if (promise_1 === _this._currentPromise) {
                            _this.setState({
                                currentOptions: newOptionsFromPromise
                            });
                        }
                    });
                }
            }
        };
        /**
         * OnBlur handler. Set the focused state to false
         * and submit any pending value
         */
        ComboBox.prototype._onBlur = function () {
            if (this.state.focused) {
                this.setState({ focused: false });
                this._submitPendingValue();
            }
        };
        /**
         * Submit a pending value if there is one
         */
        ComboBox.prototype._submitPendingValue = function () {
            var _a = this.props, onChanged = _a.onChanged, allowFreeform = _a.allowFreeform;
            var _b = this.state, currentPendingValue = _b.currentPendingValue, currentPendingValueValidIndex = _b.currentPendingValueValidIndex, currentOptions = _b.currentOptions, currentPendingValueValidIndexOnHover = _b.currentPendingValueValidIndexOnHover;
            // If we allow freeform and we have a pending value, we
            // need to handle that
            if (allowFreeform && currentPendingValue !== '') {
                // Check to see if the user typed an exact match
                if (currentPendingValueValidIndex >= 0) {
                    var pendingOptionText = currentOptions[currentPendingValueValidIndex].text.toLocaleLowerCase();
                    // By exact match, that means: our pending value is the same as the the pending option text OR
                    // the peding option starts with the pending value and we have an "autoComplete" selection
                    // where the total lenght is equal to pending option length; update the state
                    if (currentPendingValue.toLocaleLowerCase() === pendingOptionText ||
                        (pendingOptionText.indexOf(currentPendingValue.toLocaleLowerCase()) === 0 &&
                            this._comboBox.isValueSelected &&
                            currentPendingValue.length + (this._comboBox.selectionEnd - this._comboBox.selectionStart) === pendingOptionText.length)) {
                        this._setSelectedIndex(currentPendingValueValidIndex);
                        this._clearPendingInfo();
                        return;
                    }
                }
                if (onChanged) {
                    onChanged(undefined, undefined, currentPendingValue);
                }
                else {
                    // If we are not controlled, create a new option
                    var newOption = { key: currentPendingValue, text: currentPendingValue };
                    var newOptions = currentOptions.concat([newOption]);
                    this.setState({
                        currentOptions: newOptions,
                        selectedIndex: newOptions.length - 1
                    });
                }
            }
            else if (currentPendingValueValidIndex >= 0) {
                // Since we are not allowing freeform, we must have a matching
                // to be able to update state
                this._setSelectedIndex(currentPendingValueValidIndex);
            }
            else if (currentPendingValueValidIndexOnHover >= 0) {
                // If all else failed and we were hovering over an item, select it
                this._setSelectedIndex(currentPendingValueValidIndexOnHover);
            }
            // Finally, clear the pending info
            this._clearPendingInfo();
        };
        // Render Callout container and pass in list
        ComboBox.prototype._onRenderContainer = function (props) {
            var onRenderList = props.onRenderList, calloutProps = props.calloutProps, dropdownWidth = props.dropdownWidth, _a = props.onRenderLowerContent, onRenderLowerContent = _a === void 0 ? this._onRenderLowerContent : _a, useComboBoxAsMenuWidth = props.useComboBoxAsMenuWidth;
            return (React.createElement(Callout_1.Callout, tslib_1.__assign({ isBeakVisible: false, gapSpace: 0, doNotLayer: false, directionalHint: 4 /* bottomLeftEdge */, directionalHintFixed: true }, calloutProps, { className: this._classNames.callout, target: this._comboBoxWrapper, onDismiss: this._onDismiss, onScroll: this._onScroll, setInitialFocus: false, calloutWidth: useComboBoxAsMenuWidth ?
                    this._comboBoxWrapper.clientWidth + 2
                    : dropdownWidth }),
                React.createElement("div", { className: this._classNames.optionsContainerWrapper, ref: this._resolveRef('_comboBoxMenu') }, onRenderList(tslib_1.__assign({}, props), this._onRenderList)),
                onRenderLowerContent(this.props, this._onRenderLowerContent)));
        };
        // Render List of items
        ComboBox.prototype._onRenderList = function (props) {
            var _this = this;
            var onRenderItem = props.onRenderItem, options = props.options;
            var id = this._id;
            return (React.createElement("div", { id: id + '-list', className: this._classNames.optionsContainer, "aria-labelledby": id + '-label', role: 'listbox' }, options.map(function (item) { return onRenderItem(item, _this._onRenderItem); })));
        };
        // Render items
        ComboBox.prototype._onRenderItem = function (item) {
            switch (item.itemType) {
                case SelectableOption_types_1.SelectableOptionMenuItemType.Divider:
                    return this._renderSeparator(item);
                case SelectableOption_types_1.SelectableOptionMenuItemType.Header:
                    return this._renderHeader(item);
                default:
                    return this._renderOption(item);
            }
        };
        // Default _onRenderLowerContent function returns nothing
        ComboBox.prototype._onRenderLowerContent = function () {
            return null;
        };
        // Render separator
        ComboBox.prototype._renderSeparator = function (item) {
            var index = item.index, key = item.key;
            if (index && index > 0) {
                return (React.createElement("div", { role: 'separator', key: key, className: this._classNames.divider }));
            }
            return null;
        };
        ComboBox.prototype._renderHeader = function (item) {
            var _a = this.props.onRenderOption, onRenderOption = _a === void 0 ? this._onRenderOption : _a;
            return (React.createElement("div", { key: item.key, className: this._classNames.header, role: 'heading' }, onRenderOption(item, this._onRenderOption)));
        };
        // Render menu item
        ComboBox.prototype._renderOption = function (item) {
            var _a = this.props.onRenderOption, onRenderOption = _a === void 0 ? this._onRenderOption : _a;
            var id = this._id;
            var isSelected = this._isOptionSelected(item.index);
            var rootClassNames = ComboBox_classNames_1.getComboBoxOptionClassNames(this._getCurrentOptionStyles(item)).root;
            return (React.createElement(Button_1.CommandButton, { id: id + '-list' + item.index, key: item.key, "data-index": item.index, className: rootClassNames, styles: this._getCurrentOptionStyles(item), checked: isSelected, onClick: this._onItemClick(item.index), onMouseEnter: this._onOptionMouseEnter.bind(this, item.index), onMouseMove: this._onOptionMouseMove.bind(this, item.index), onMouseLeave: this._onOptionMouseLeave, role: 'option', "aria-selected": isSelected ? 'true' : 'false', ariaLabel: item.text, disabled: item.disabled },
                " ",
                React.createElement("span", { ref: this._resolveRef(isSelected ? '_selectedElement' : '') }, onRenderOption(item, this._onRenderOption))));
        };
        /**
         * If we are coming from a mouseOut:
         * there is no visible selected option.
         *
         * Else if We are hovering over an item:
         * that gets the selected look.
         *
         * Else:
         * Use the current valid pending index if it exists OR
         * we do not have a valid index and we currently have a pending input value,
         * otherwise use the selected index
         * */
        ComboBox.prototype._isOptionSelected = function (index) {
            var currentPendingValueValidIndexOnHover = this.state.currentPendingValueValidIndexOnHover;
            // If the hover state is set to clearAll, don't show a selected index.
            // Note, this happens when the user moused out of the menu items
            if (currentPendingValueValidIndexOnHover === HoverStatus.clearAll) {
                return false;
            }
            return this._getPendingSelectedIndex(true /* includePendingValue */) === index;
        };
        /**
         * Gets the pending selected index taking into account hover, valueValidIndex, and selectedIndex
         * @param includeCurrentPendingValue - Should we include the currentPendingValue when
         * finding the index
         */
        ComboBox.prototype._getPendingSelectedIndex = function (includeCurrentPendingValue) {
            var _a = this.state, currentPendingValueValidIndexOnHover = _a.currentPendingValueValidIndexOnHover, currentPendingValueValidIndex = _a.currentPendingValueValidIndex, currentPendingValue = _a.currentPendingValue, selectedIndex = _a.selectedIndex;
            return (currentPendingValueValidIndexOnHover >= 0 ?
                currentPendingValueValidIndexOnHover :
                (currentPendingValueValidIndex >= 0 || (includeCurrentPendingValue && currentPendingValue !== '')) ?
                    currentPendingValueValidIndex :
                    selectedIndex);
        };
        /**
         * Scroll handler for the callout to make sure the mouse events
         * for updating focus are not interacting during scroll
         */
        ComboBox.prototype._onScroll = function () {
            var _this = this;
            if (!this._isScrollIdle && this._scrollIdleTimeoutId !== undefined) {
                this._async.clearTimeout(this._scrollIdleTimeoutId);
                this._scrollIdleTimeoutId = undefined;
            }
            else {
                this._isScrollIdle = false;
            }
            this._scrollIdleTimeoutId = this._async.setTimeout(function () { _this._isScrollIdle = true; }, this._scrollIdleDelay);
        };
        /**
         * Scroll the selected element into view
         */
        ComboBox.prototype._scrollIntoView = function () {
            var _a = this.props, onScrollToItem = _a.onScrollToItem, scrollSelectedToTop = _a.scrollSelectedToTop;
            var _b = this.state, currentPendingValueValidIndex = _b.currentPendingValueValidIndex, currentPendingValue = _b.currentPendingValue, selectedIndex = _b.selectedIndex;
            if (onScrollToItem) {
                // Use the custom scroll handler
                onScrollToItem((currentPendingValueValidIndex >= 0 || currentPendingValue !== '') ? currentPendingValueValidIndex : selectedIndex);
            }
            else if (this._selectedElement && this._selectedElement.offsetParent) {
                // We are using refs, scroll the ref into view
                if (scrollSelectedToTop) {
                    this._selectedElement.offsetParent.scrollIntoView(true);
                }
                else {
                    var alignToTop = true;
                    if (this._comboBoxMenu.offsetParent) {
                        var scrollableParentRect = this._comboBoxMenu.offsetParent.getBoundingClientRect();
                        var selectedElementRect = this._selectedElement.offsetParent.getBoundingClientRect();
                        // If we are completely in view then we do not need to scroll
                        if (scrollableParentRect.top <= selectedElementRect.top &&
                            scrollableParentRect.top + scrollableParentRect.height >= selectedElementRect.top + selectedElementRect.height) {
                            return;
                        }
                        // If we are lower than the scrollable parent viewport then we should align to the bottom
                        if (scrollableParentRect.top + scrollableParentRect.height <= selectedElementRect.top + selectedElementRect.height) {
                            alignToTop = false;
                        }
                    }
                    this._selectedElement.offsetParent.scrollIntoView(alignToTop);
                }
            }
        };
        // Render content of item
        ComboBox.prototype._onRenderOption = function (item) {
            var optionClassNames = ComboBox_classNames_1.getComboBoxOptionClassNames(this._getCurrentOptionStyles(item));
            return React.createElement("span", { className: optionClassNames.optionText }, item.text);
        };
        /**
         * Click handler for the menu items
         * to select the item and also close the menu
         * @param index - the index of the item that was clicked
         */
        ComboBox.prototype._onItemClick = function (index) {
            var _this = this;
            return function () {
                _this._setSelectedIndex(index);
                _this.setState({
                    isOpen: false
                });
            };
        };
        /**
         * Handles dismissing (cancelling) the menu
         */
        ComboBox.prototype._onDismiss = function () {
            // reset the selected index
            // to the last valud state
            this._resetSelectedIndex();
            // close the menu and focus the input
            this.setState({ isOpen: false });
            this._comboBox.focus();
        };
        /**
         * Get the index of the option that is marked as selected
         * @param options - the comboBox options
         * @param selectedKey - the known selected key to find
         * @returns { number } - the index of the selected option, -1 if not found
         */
        ComboBox.prototype._getSelectedIndex = function (options, selectedKey) {
            if (options === undefined || selectedKey === undefined) {
                return -1;
            }
            return Utilities_1.findIndex(options, (function (option) { return (option.selected || option.key === selectedKey); }));
        };
        /**
         * Reset the selected index by clearing the
         * input (of any pending text), clearing the pending state,
         * and setting the suggested display value to the last
         * selected state text
         */
        ComboBox.prototype._resetSelectedIndex = function () {
            var _a = this.state, selectedIndex = _a.selectedIndex, currentOptions = _a.currentOptions;
            this._comboBox.clear();
            this._clearPendingInfo();
            if (selectedIndex > 0 && selectedIndex < currentOptions.length) {
                this.setState({
                    suggestedDisplayValue: currentOptions[selectedIndex].text
                });
            }
            else if (this.props.value) {
                // If we had a value initially, restore it
                this.setState({
                    suggestedDisplayValue: this.props.value
                });
            }
        };
        /**
         * Clears the pending info state
         */
        ComboBox.prototype._clearPendingInfo = function () {
            this._setPendingInfo('' /* suggestedDisplayValue */, -1 /* currentPendingValueValidIndex */, '' /* currentPendingValue */);
        };
        /**
         * Set the pending info
         * @param currentPendingValue - new pending value to set
         * @param currentPendingValueValidIndex - new pending value index to set
         * @param suggestedDisplayValue - new suggest display value to set
         */
        ComboBox.prototype._setPendingInfo = function (currentPendingValue, currentPendingValueValidIndex, suggestedDisplayValue) {
            this.setState({
                currentPendingValue: currentPendingValue,
                currentPendingValueValidIndex: currentPendingValueValidIndex,
                suggestedDisplayValue: suggestedDisplayValue,
                currentPendingValueValidIndexOnHover: HoverStatus.default
            });
        };
        /**
         * Set the pending info from the given index
         * @param index - the index to set the pending info from
         */
        ComboBox.prototype._setPendingInfoFromIndex = function (index) {
            var currentOptions = this.state.currentOptions;
            if (index >= 0 && index < currentOptions.length) {
                var option = currentOptions[index];
                this._setPendingInfo(option.text, index, option.text);
            }
            else {
                this._clearPendingInfo();
            }
        };
        /**
         * Sets the pending info for the comboBox
         * @param index - the index to search from
         * @param searchDirection - the direction to search
         */
        ComboBox.prototype._setPendingInfoFromIndexAndDirection = function (index, searchDirection) {
            var _a = this.state, isOpen = _a.isOpen, selectedIndex = _a.selectedIndex;
            index = this._getNextSelectableIndex(index, searchDirection);
            this._setPendingInfoFromIndex(index);
        };
        /**
         * Handle keydown on the input
         * @param ev - The keyboard event that was fired
         */
        ComboBox.prototype._onInputKeyDown = function (ev) {
            var _a = this.props, disabled = _a.disabled, allowFreeform = _a.allowFreeform, autoComplete = _a.autoComplete;
            var _b = this.state, isOpen = _b.isOpen, currentPendingValueValidIndex = _b.currentPendingValueValidIndex, currentOptions = _b.currentOptions, currentPendingValueValidIndexOnHover = _b.currentPendingValueValidIndexOnHover;
            if (disabled) {
                this._handleInputWhenDisabled(ev);
                return;
            }
            var index = this._getPendingSelectedIndex(false /* includeCurrentPendingValue */);
            switch (ev.which) {
                case 13 /* enter */:
                    // On enter submit the pending value
                    this._submitPendingValue();
                    // if we are open or
                    // if we are not allowing freeform or
                    // our we have no pending value
                    // and no valid pending index
                    // flip the open state
                    if ((isOpen ||
                        ((!allowFreeform ||
                            this.state.currentPendingValue === undefined ||
                            this.state.currentPendingValue === null ||
                            this.state.currentPendingValue.length <= 0) &&
                            this.state.currentPendingValueValidIndex < 0))) {
                        this.setState({
                            isOpen: !isOpen
                        });
                    }
                    // Allow TAB to propigate
                    if (ev.which === 9 /* tab */) {
                        return;
                    }
                    break;
                case 9 /* tab */:
                    // On enter submit the pending value
                    this._submitPendingValue();
                    // If we are not allowing freeform
                    // or the comboBox is open, flip the open state
                    if (isOpen) {
                        this.setState({
                            isOpen: !isOpen
                        });
                    }
                    // Allow TAB to propigate
                    return;
                case 27 /* escape */:
                    // reset the selected index
                    this._resetSelectedIndex();
                    // Close the menu if opened
                    if (isOpen) {
                        this.setState({
                            isOpen: false
                        });
                    }
                    break;
                case 38 /* up */:
                    // if we are in clearAll state (e.g. the user as hovering
                    // and has since mousedOut of the menu items),
                    // go to the last index
                    if (currentPendingValueValidIndexOnHover === HoverStatus.clearAll) {
                        index = this.state.currentOptions.length;
                    }
                    // Go to the previous option
                    this._setPendingInfoFromIndexAndDirection(index, SearchDirection.backward);
                    break;
                case 40 /* down */:
                    // Expand the comboBox on ALT + DownArrow
                    if (ev.altKey || ev.metaKey) {
                        this.setState({ isOpen: true });
                    }
                    else {
                        // if we are in clearAll state (e.g. the user as hovering
                        // and has since mousedOut of the menu items),
                        // go to the first index
                        if (currentPendingValueValidIndexOnHover === HoverStatus.clearAll) {
                            index = -1;
                        }
                        // Got to the next option
                        this._setPendingInfoFromIndexAndDirection(index, SearchDirection.forward);
                    }
                    break;
                case 36 /* home */:
                case 35 /* end */:
                    if (allowFreeform) {
                        return;
                    }
                    // Set the initial values to respond to HOME
                    // which goes to the first selectable option
                    index = -1;
                    var directionToSearch = SearchDirection.forward;
                    // If end, update the values to respond to END
                    // which goes to the last selectable option
                    if (ev.which === 35 /* end */) {
                        index = currentOptions.length;
                        directionToSearch = SearchDirection.backward;
                    }
                    this._setPendingInfoFromIndexAndDirection(index, directionToSearch);
                    break;
                case 32 /* space */:
                    // event handled in _onComboBoxKeyUp
                    if (!allowFreeform && autoComplete === 'off') {
                        break;
                    }
                default:
                    // are we processing a function key? if so bail out
                    if (ev.which >= 112 /* F1 */ && ev.which <= 123 /* F12 */) {
                        return;
                    }
                    // If we get here and we got either and ALT key
                    // or meta key and we are current open, let's close the menu
                    if ((ev.altKey || ev.metaKey) && isOpen) {
                        this.setState({ isOpen: !isOpen });
                    }
                    // If we are not allowing freeform and
                    // allowing autoComplete, handle the input here
                    // since we have marked the input as readonly
                    if (!allowFreeform && autoComplete === 'on') {
                        this._onInputChange(String.fromCharCode(ev.which));
                        break;
                    }
                    // allow the key to propigate by default
                    return;
            }
            ev.stopPropagation();
            ev.preventDefault();
        };
        /**
         * Handle keyup on the input
         * @param ev - the keyboard event that was fired
         */
        ComboBox.prototype._onInputKeyUp = function (ev) {
            var _a = this.props, disabled = _a.disabled, allowFreeform = _a.allowFreeform, autoComplete = _a.autoComplete;
            if (disabled) {
                this._handleInputWhenDisabled(ev);
                return;
            }
            switch (ev.which) {
                case 32 /* space */:
                    // If we are not allowing freeform and are not autoComplete
                    // make space expand/collapse the comboBox
                    // and allow the event to propagate
                    if (!allowFreeform && autoComplete === 'off') {
                        this.setState({
                            isOpen: !this.state.isOpen
                        });
                        return;
                    }
                    break;
                default:
                    return;
            }
            ev.stopPropagation();
            ev.preventDefault();
        };
        ComboBox.prototype._onOptionMouseEnter = function (index) {
            if (!this._isScrollIdle) {
                return;
            }
            this.setState({
                currentPendingValueValidIndexOnHover: index
            });
        };
        ComboBox.prototype._onOptionMouseMove = function (index) {
            if (!this._isScrollIdle || this.state.currentPendingValueValidIndexOnHover === index) {
                return;
            }
            this.setState({
                currentPendingValueValidIndexOnHover: index
            });
        };
        /**
         * Handle dismissing the menu and
         * eating the required key event when disabled
         * @param ev - the keyboard event that was fired
         */
        ComboBox.prototype._handleInputWhenDisabled = function (ev) {
            // If we are disabled, close the menu (if needed)
            // and eat all keystokes other than TAB or ESC
            if (this.props.disabled) {
                if (this.state.isOpen) {
                    this.setState({ isOpen: false });
                }
                // When disabled stop propagation and prevent default
                // of the event unless we have a tab, escape, or function key
                if (ev !== null &&
                    ev.which !== 9 /* tab */ &&
                    ev.which !== 27 /* escape */ &&
                    (ev.which < 112 /* F1 */ || ev.which > 123 /* F12 */)) {
                    ev.stopPropagation();
                    ev.preventDefault();
                }
            }
        };
        /**
         * Click handler for the button of the comboBox
         * and the input when not allowing freeform. This
         * toggles the expand/collapse state of the comboBox (if enbled)
         */
        ComboBox.prototype._onComboBoxClick = function () {
            var disabled = this.props.disabled;
            var isOpen = this.state.isOpen;
            if (!disabled) {
                this.setState({
                    isOpen: !isOpen
                });
            }
        };
        /**
       * Get the styles for the current option.
       * @param item Item props for the current option
       */
        ComboBox.prototype._getCaretButtonStyles = function () {
            var customCaretDownButtonStyles = this.props.caretDownButtonStyles;
            return ComboBox_styles_1.getCaretDownButtonStyles(this.props.theme, customCaretDownButtonStyles);
        };
        /**
         * Get the styles for the current option.
         * @param item Item props for the current option
         */
        ComboBox.prototype._getCurrentOptionStyles = function (item) {
            var customStylesForAllOptions = this.props.comboBoxOptionStyles;
            var customStylesForCurrentOption = item.styles;
            return ComboBox_styles_1.getOptionStyles(this.props.theme, customStylesForAllOptions, customStylesForCurrentOption);
        };
        ComboBox.defaultProps = {
            options: [],
            allowFreeform: false,
            autoComplete: 'on',
            buttonIconProps: { iconName: 'ChevronDown' }
        };
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "focus", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "dismissMenu", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onUpdateValueInAutoFillWillReceiveProps", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onShouldSelectFullInputValueInAutoFillComponentDidUpdate", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_getVisibleValue", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onInputChange", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_select", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onResolveOptions", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onBlur", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onRenderContainer", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onRenderList", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onRenderItem", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onRenderLowerContent", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_renderOption", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onScroll", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onRenderOption", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onDismiss", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onInputKeyDown", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onInputKeyUp", null);
        tslib_1.__decorate([
            Utilities_1.autobind
        ], ComboBox.prototype, "_onComboBoxClick", null);
        ComboBox = tslib_1.__decorate([
            Utilities_1.customizable('ComboBox', ['theme'])
        ], ComboBox);
        return ComboBox;
    }(Utilities_1.BaseComponent));
    exports.ComboBox = ComboBox;
});
//# sourceMappingURL=ComboBox.js.map