primeng/fesm2022/primeng-autocomplete.mjs

PrimeNG is an open source UI library for Angular featuring a rich set of 80+ components, a theme designer, various theme alternatives such as Material, Bootstrap, Tailwind, premium templates and professional support. In addition, it integrates with PrimeB

export * from 'primeng/types/autocomplete';
import * as i3 from '@angular/common';
import { CommonModule } from '@angular/common';
import * as i0 from '@angular/core';
import { Injectable, InjectionToken, forwardRef, inject, input, EventEmitter, signal, computed, booleanAttribute, numberAttribute, ContentChildren, HostListener, ContentChild, ViewChild, Output, Input, ViewEncapsulation, ChangeDetectionStrategy, Component, NgModule } from '@angular/core';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import { equals, isNotEmpty, uuid, findLastIndex, resolveFieldData, focus, isEmpty, findSingle } from '@primeuix/utils';
import * as i1 from 'primeng/api';
import { TranslationKeys, SharedModule, PrimeTemplate } from 'primeng/api';
import { AutoFocus } from 'primeng/autofocus';
import { PARENT_INSTANCE } from 'primeng/basecomponent';
import { BaseInput } from 'primeng/baseinput';
import * as i2 from 'primeng/bind';
import { Bind, BindModule } from 'primeng/bind';
import { Chip } from 'primeng/chip';
import { TimesCircleIcon, SpinnerIcon, ChevronDownIcon, TimesIcon } from 'primeng/icons';
import { InputText } from 'primeng/inputtext';
import { Overlay } from 'primeng/overlay';
import { Ripple } from 'primeng/ripple';
import { Scroller } from 'primeng/scroller';
import { style as style$1 } from '@primeuix/styles/autocomplete';
import { BaseStyle } from 'primeng/base';

const style = /*css*/ `
${style$1}

/* For PrimeNG */
p-autoComplete.ng-invalid.ng-dirty .p-autocomplete-input,
p-autoComplete.ng-invalid.ng-dirty .p-autocomplete-input-multiple,
p-auto-complete.ng-invalid.ng-dirty .p-autocomplete-input,
p-auto-complete.ng-invalid.ng-dirty .p-autocomplete-input-multiple p-autocomplete.ng-invalid.ng-dirty .p-autocomplete-input,
p-autocomplete.ng-invalid.ng-dirty .p-autocomplete-input-multiple {
    border-color: dt('autocomplete.invalid.border.color');
}

p-autoComplete.ng-invalid.ng-dirty .p-autocomplete-input:enabled:focus,
p-autoComplete.ng-invalid.ng-dirty:not(.p-disabled).p-focus .p-autocomplete-input-multiple,
p-auto-complete.ng-invalid.ng-dirty .p-autocomplete-input:enabled:focus,
p-auto-complete.ng-invalid.ng-dirty:not(.p-disabled).p-focus .p-autocomplete-input-multiple,
p-autocomplete.ng-invalid.ng-dirty .p-autocomplete-input:enabled:focus,
p-autocomplete.ng-invalid.ng-dirty:not(.p-disabled).p-focus .p-autocomplete-input-multiple {
    border-color: dt('autocomplete.focus.border.color');
}

p-autoComplete.ng-invalid.ng-dirty .p-autocomplete-input-chip input::placeholder,
p-auto-complete.ng-invalid.ng-dirty .p-autocomplete-input-chip input::placeholder,
p-autocomplete.ng-invalid.ng-dirty .p-autocomplete-input-chip input::placeholder {
    color: dt('autocomplete.invalid.placeholder.color');
}

p-autoComplete.ng-invalid.ng-dirty .p-autocomplete-input::placeholder,
p-auto-complete.ng-invalid.ng-dirty .p-autocomplete-input::placeholder,
p-autocomplete.ng-invalid.ng-dirty .p-autocomplete-input::placeholder {
    color: dt('autocomplete.invalid.placeholder.color');
}
`;
const inlineStyles = {
    root: { position: 'relative' }
};
const classes = {
    root: ({ instance }) => [
        'p-autocomplete p-component p-inputwrapper',
        {
            'p-invalid': instance.invalid(),
            'p-focus': instance.focused,
            'p-inputwrapper-filled': instance.$filled(),
            'p-inputwrapper-focus': (instance.focused && !instance.$disabled()) || instance.autofocus || instance.overlayVisible,
            'p-autocomplete-open': instance.overlayVisible,
            'p-autocomplete-clearable': instance.showClear && !instance.$disabled(),
            'p-autocomplete-fluid': instance.hasFluid
        }
    ],
    pcInputText: 'p-autocomplete-input',
    inputMultiple: ({ instance }) => [
        'p-autocomplete-input-multiple',
        {
            'p-disabled': instance.$disabled(),
            'p-variant-filled': instance.$variant() === 'filled'
        }
    ],
    chipItem: ({ instance, i }) => [
        'p-autocomplete-chip-item',
        {
            'p-focus': instance.focusedMultipleOptionIndex() === i
        }
    ],
    pcChip: 'p-autocomplete-chip',
    chipIcon: 'p-autocomplete-chip-icon',
    inputChip: 'p-autocomplete-input-chip',
    loader: 'p-autocomplete-loader',
    dropdown: 'p-autocomplete-dropdown',
    overlay: ({ instance }) => ['p-autocomplete-overlay p-component-overlay p-component', { 'p-input-filled': instance.$variant() === 'filled', 'p-ripple-disabled': instance.config.ripple() === false }],
    listContainer: 'p-autocomplete-list-container',
    list: 'p-autocomplete-list',
    optionGroup: 'p-autocomplete-option-group',
    option: ({ instance, option, i, scrollerOptions }) => ({
        'p-autocomplete-option': true,
        'p-autocomplete-option-selected': instance.isSelected(option),
        'p-focus': instance.focusedOptionIndex() === instance.getOptionIndex(i, scrollerOptions),
        'p-disabled': instance.isOptionDisabled(option)
    }),
    emptyMessage: 'p-autocomplete-empty-message',
    clearIcon: 'p-autocomplete-clear-icon'
};
class AutoCompleteStyle extends BaseStyle {
    name = 'autocomplete';
    style = style;
    classes = classes;
    inlineStyles = inlineStyles;
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "21.0.5", ngImport: i0, type: AutoCompleteStyle, deps: null, target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "21.0.5", ngImport: i0, type: AutoCompleteStyle });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "21.0.5", ngImport: i0, type: AutoCompleteStyle, decorators: [{
            type: Injectable
        }] });
/**
 *
 * AutoComplete is an input component that provides real-time suggestions while being typed.
 *
 * [Live Demo](https://www.primeng.org/autocomplete/)
 *
 * @module autocompletestyle
 *
 */
var AutoCompleteClasses;
(function (AutoCompleteClasses) {
    /**
     * Class name of the root element
     */
    AutoCompleteClasses["root"] = "p-autocomplete";
    /**
     * Class name of the input element
     */
    AutoCompleteClasses["pcInputText"] = "p-autocomplete-input";
    /**
     * Class name of the input multiple element
     */
    AutoCompleteClasses["inputMultiple"] = "p-autocomplete-input-multiple";
    /**
     * Class name of the chip item element
     */
    AutoCompleteClasses["chipItem"] = "p-autocomplete-chip-item";
    /**
     * Class name of the chip element
     */
    AutoCompleteClasses["pcChip"] = "p-autocomplete-chip";
    /**
     * Class name of the chip icon element
     */
    AutoCompleteClasses["chipIcon"] = "p-autocomplete-chip-icon";
    /**
     * Class name of the input chip element
     */
    AutoCompleteClasses["inputChip"] = "p-autocomplete-input-chip";
    /**
     * Class name of the loader element
     */
    AutoCompleteClasses["loader"] = "p-autocomplete-loader";
    /**
     * Class name of the dropdown element
     */
    AutoCompleteClasses["dropdown"] = "p-autocomplete-dropdown";
    /**
     * Class name of the panel element
     */
    AutoCompleteClasses["panel"] = "p-autocomplete-overlay";
    /**
     * Class name of the list element
     */
    AutoCompleteClasses["list"] = "p-autocomplete-list";
    /**
     * Class name of the option group element
     */
    AutoCompleteClasses["optionGroup"] = "p-autocomplete-option-group";
    /**
     * Class name of the option element
     */
    AutoCompleteClasses["option"] = "p-autocomplete-option";
    /**
     * Class name of the empty message element
     */
    AutoCompleteClasses["emptyMessage"] = "p-autocomplete-empty-message";
    /**
     * Class name of the clear icon
     */
    AutoCompleteClasses["clearIcon"] = "p-autocomplete-clear-icon";
})(AutoCompleteClasses || (AutoCompleteClasses = {}));

const AUTOCOMPLETE_INSTANCE = new InjectionToken('AUTOCOMPLETE_INSTANCE');
const AUTOCOMPLETE_VALUE_ACCESSOR = {
    provide: NG_VALUE_ACCESSOR,
    useExisting: forwardRef(() => AutoComplete),
    multi: true
};
/**
 * AutoComplete is an input component that provides real-time suggestions when being typed.
 * @group Components
 */
class AutoComplete extends BaseInput {
    overlayService;
    zone;
    $pcAutoComplete = inject(AUTOCOMPLETE_INSTANCE, { optional: true, skipSelf: true }) ?? undefined;
    bindDirectiveInstance = inject(Bind, { self: true });
    /**
     * Minimum number of characters to initiate a search.
     * @deprecated since v20.0.0, use `minQueryLength` instead.
     * @group Props
     */
    minLength = 1;
    /**
     * Minimum number of characters to initiate a search.
     * @group Props
     */
    minQueryLength;
    /**
     * Delay between keystrokes to wait before sending a query.
     * @group Props
     */
    delay = 300;
    /**
     * Inline style of the overlay panel element.
     * @group Props
     */
    panelStyle;
    /**
     * Style class of the component.
     * @deprecated since v20.0.0, use `class` instead.
     * @group Props
     */
    styleClass;
    /**
     * Style class of the overlay panel element.
     * @group Props
     */
    panelStyleClass;
    /**
     * Inline style of the input field.
     * @group Props
     */
    inputStyle;
    /**
     * Identifier of the focus input to match a label defined for the component.
     * @group Props
     */
    inputId;
    /**
     * Inline style of the input field.
     * @group Props
     */
    inputStyleClass;
    /**
     * Hint text for the input field.
     * @group Props
     */
    placeholder;
    /**
     * When present, it specifies that the input cannot be typed.
     * @group Props
     */
    readonly;
    /**
     * Maximum height of the suggestions panel.
     * @group Props
     */
    scrollHeight = '200px';
    /**
     * Defines if data is loaded and interacted with in lazy manner.
     * @group Props
     */
    lazy = false;
    /**
     * Whether the data should be loaded on demand during scroll.
     * @group Props
     */
    virtualScroll;
    /**
     * Height of an item in the list for VirtualScrolling.
     * @group Props
     */
    virtualScrollItemSize;
    /**
     * Whether to use the scroller feature. The properties of scroller component can be used like an object in it.
     * @group Props
     */
    virtualScrollOptions;
    /**
     * When enabled, highlights the first item in the list by default.
     * @group Props
     */
    autoHighlight;
    /**
     * When present, autocomplete clears the manual input if it does not match of the suggestions to force only accepting values from the suggestions.
     * @group Props
     */
    forceSelection;
    /**
     * Type of the input, defaults to "text".
     * @group Props
     */
    type = 'text';
    /**
     * Whether to automatically manage layering.
     * @group Props
     */
    autoZIndex = true;
    /**
     * Base zIndex value to use in layering.
     * @group Props
     */
    baseZIndex = 0;
    /**
     * Defines a string that labels the input for accessibility.
     * @group Props
     */
    ariaLabel;
    /**
     * Defines a string that labels the dropdown button for accessibility.
     * @group Props
     */
    dropdownAriaLabel;
    /**
     * Specifies one or more IDs in the DOM that labels the input field.
     * @group Props
     */
    ariaLabelledBy;
    /**
     * Icon class of the dropdown icon.
     * @group Props
     */
    dropdownIcon;
    /**
     * Ensures uniqueness of selected items on multiple mode.
     * @group Props
     */
    unique = true;
    /**
     * Whether to display options as grouped when nested options are provided.
     * @group Props
     */
    group;
    /**
     * Whether to run a query when input receives focus.
     * @group Props
     */
    completeOnFocus = false;
    /**
     * When enabled, a clear icon is displayed to clear the value.
     * @group Props
     */
    showClear = false;
    /**
     * Displays a button next to the input field when enabled.
     * @group Props
     */
    dropdown;
    /**
     * Whether to show the empty message or not.
     * @group Props
     */
    showEmptyMessage = true;
    /**
     * Specifies the behavior dropdown button. Default "blank" mode sends an empty string and "current" mode sends the input value.
     * @group Props
     */
    dropdownMode = 'blank';
    /**
     * Specifies if multiple values can be selected.
     * @group Props
     */
    multiple;
    /**
     * When enabled, the input value is added to the selected items on tab key press when multiple is true and typeahead is false.
     * @group Props
     */
    addOnTab = false;
    /**
     * Index of the element in tabbing order.
     * @group Props
     */
    tabindex;
    /**
     * A property to uniquely identify a value in options.
     * @group Props
     */
    dataKey;
    /**
     * Text to display when there is no data. Defaults to global value in i18n translation configuration.
     * @group Props
     */
    emptyMessage;
    /**
     * Transition options of the show animation.
     * @group Props
     * @deprecated since v21.0.0, use `motionOptions` instead.
     */
    showTransitionOptions = '.12s cubic-bezier(0, 0, 0.2, 1)';
    /**
     * Transition options of the hide animation.
     * @group Props
     * @deprecated since v21.0.0, use `motionOptions` instead.
     */
    hideTransitionOptions = '.1s linear';
    /**
     * When present, it specifies that the component should automatically get focus on load.
     * @group Props
     */
    autofocus;
    /**
     * Used to define a string that autocomplete attribute the current element.
     * @group Props
     */
    autocomplete = 'off';
    /**
     * Name of the options field of an option group.
     * @group Props
     */
    optionGroupChildren = 'items';
    /**
     * Name of the label field of an option group.
     * @group Props
     */
    optionGroupLabel = 'label';
    /**
     * Options for the overlay element.
     * @group Props
     */
    overlayOptions;
    /**
     * An array of suggestions to display.
     * @group Props
     */
    get suggestions() {
        return this._suggestions();
    }
    set suggestions(value) {
        this._suggestions.set(value);
        this.handleSuggestionsChange();
    }
    /**
     * Property name or getter function to use as the label of an option.
     * @group Props
     */
    optionLabel;
    /**
     * Property name or getter function to use as the value of an option.
     * @group Props
     */
    optionValue;
    /**
     * Unique identifier of the component.
     * @group Props
     */
    id;
    /**
     * Text to display when the search is active. Defaults to global value in i18n translation configuration.
     * @group Props
     * @defaultValue '{0} results are available'
     */
    searchMessage;
    /**
     * Text to display when filtering does not return any results. Defaults to global value in i18n translation configuration.
     * @group Props
     * @defaultValue 'No selected item'
     */
    emptySelectionMessage;
    /**
     * Text to be displayed in hidden accessible field when options are selected. Defaults to global value in i18n translation configuration.
     * @group Props
     * @defaultValue '{0} items selected'
     */
    selectionMessage;
    /**
     * Whether to focus on the first visible or selected element when the overlay panel is shown.
     * @group Props
     */
    autoOptionFocus = false;
    /**
     * When enabled, the focused option is selected.
     * @group Props
     */
    selectOnFocus;
    /**
     * Locale to use in searching. The default locale is the host environment's current locale.
     * @group Props
     */
    searchLocale;
    /**
     * Property name or getter function to use as the disabled flag of an option, defaults to false when not defined.
     * @group Props
     */
    optionDisabled;
    /**
     * When enabled, the hovered option will be focused.
     * @group Props
     */
    focusOnHover = true;
    /**
     * Whether typeahead is active or not.
     * @defaultValue true
     * @group Props
     */
    typeahead = true;
    /**
     * Whether to add an item on blur event if the input has value and typeahead is false with multiple mode.
     * @defaultValue false
     * @group Props
     */
    addOnBlur = false;
    /**
     * Separator char to add item when typeahead is false and multiple mode is enabled.
     * @group Props
     */
    separator;
    /**
     * Target element to attach the overlay, valid values are "body" or a local ng-template variable of another element (note: use binding with brackets for template variables, e.g. [appendTo]="mydiv" for a div element having #mydiv as variable name).
     * @defaultValue 'self'
     * @group Props
     */
    appendTo = input(undefined, ...(ngDevMode ? [{ debugName: "appendTo" }] : []));
    /**
     * The motion options.
     * @group Props
     */
    motionOptions = input(undefined, ...(ngDevMode ? [{ debugName: "motionOptions" }] : []));
    /**
     * Callback to invoke to search for suggestions.
     * @param {AutoCompleteCompleteEvent} event - Custom complete event.
     * @group Emits
     */
    completeMethod = new EventEmitter();
    /**
     * Callback to invoke when a suggestion is selected.
     * @param {AutoCompleteSelectEvent} event - custom select event.
     * @group Emits
     */
    onSelect = new EventEmitter();
    /**
     * Callback to invoke when a selected value is removed.
     * @param {AutoCompleteUnselectEvent} event - custom unselect event.
     * @group Emits
     */
    onUnselect = new EventEmitter();
    /**
     * Callback to invoke when an item is added via addOnBlur or separator features.
     * @param {AutoCompleteAddEvent} event - Custom add event.
     * @group Emits
     */
    onAdd = new EventEmitter();
    /**
     * Callback to invoke when the component receives focus.
     * @param {Event} event - Browser event.
     * @group Emits
     */
    onFocus = new EventEmitter();
    /**
     * Callback to invoke when the component loses focus.
     * @param {Event} event - Browser event.
     * @group Emits
     */
    onBlur = new EventEmitter();
    /**
     * Callback to invoke to when dropdown button is clicked.
     * @param {AutoCompleteDropdownClickEvent} event - custom dropdown click event.
     * @group Emits
     */
    onDropdownClick = new EventEmitter();
    /**
     * Callback to invoke when clear button is clicked.
     * @param {Event} event - Browser event.
     * @group Emits
     */
    onClear = new EventEmitter();
    /**
     * Callback to invoke on input key down.
     * @param {KeyboardEvent} event - Keyboard event.
     * @group Emits
     */
    onInputKeydown = new EventEmitter();
    /**
     * Callback to invoke on input key up.
     * @param {KeyboardEvent} event - Keyboard event.
     * @group Emits
     */
    onKeyUp = new EventEmitter();
    /**
     * Callback to invoke on overlay is shown.
     * @param {Event} event - Browser event.
     * @group Emits
     */
    onShow = new EventEmitter();
    /**
     * Callback to invoke on overlay is hidden.
     * @param {Event} event - Browser event.
     * @group Emits
     */
    onHide = new EventEmitter();
    /**
     * Callback to invoke on lazy load data.
     * @param {AutoCompleteLazyLoadEvent} event - Lazy load event.
     * @group Emits
     */
    onLazyLoad = new EventEmitter();
    inputEL;
    multiInputEl;
    multiContainerEL;
    dropdownButton;
    itemsViewChild;
    scroller;
    overlayViewChild;
    itemsWrapper;
    /**
     * Custom item template.
     * @group Templates
     */
    itemTemplate;
    /**
     * Custom empty message template.
     * @group Templates
     */
    emptyTemplate;
    /**
     * Custom header template.
     * @group Templates
     */
    headerTemplate;
    /**
     * Custom footer template.
     * @group Templates
     */
    footerTemplate;
    /**
     * Custom selected item template.
     * @group Templates
     */
    selectedItemTemplate;
    /**
     * Custom group template.
     * @group Templates
     */
    groupTemplate;
    /**
     * Custom loader template.
     * @group Templates
     */
    loaderTemplate;
    /**
     * Custom remove icon template.
     * @group Templates
     */
    removeIconTemplate;
    /**
     * Custom loading icon template.
     * @group Templates
     */
    loadingIconTemplate;
    /**
     * Custom clear icon template.
     * @group Templates
     */
    clearIconTemplate;
    /**
     * Custom dropdown icon template.
     * @group Templates
     */
    dropdownIconTemplate;
    onHostClick(event) {
        this.onContainerClick(event);
    }
    value;
    _suggestions = signal(null, ...(ngDevMode ? [{ debugName: "_suggestions" }] : []));
    timeout;
    overlayVisible;
    suggestionsUpdated;
    highlightOption;
    highlightOptionChanged;
    focused = false;
    loading;
    scrollHandler;
    listId;
    searchTimeout;
    dirty = false;
    _itemTemplate;
    _groupTemplate;
    _selectedItemTemplate;
    _headerTemplate;
    _emptyTemplate;
    _footerTemplate;
    _loaderTemplate;
    _removeIconTemplate;
    _loadingIconTemplate;
    _clearIconTemplate;
    _dropdownIconTemplate;
    focusedMultipleOptionIndex = signal(-1, ...(ngDevMode ? [{ debugName: "focusedMultipleOptionIndex" }] : []));
    focusedOptionIndex = signal(-1, ...(ngDevMode ? [{ debugName: "focusedOptionIndex" }] : []));
    _componentStyle = inject(AutoCompleteStyle);
    $appendTo = computed(() => this.appendTo() || this.config.overlayAppendTo(), ...(ngDevMode ? [{ debugName: "$appendTo" }] : []));
    visibleOptions = computed(() => {
        return this.group ? this.flatOptions(this._suggestions()) : this._suggestions() || [];
    }, ...(ngDevMode ? [{ debugName: "visibleOptions" }] : []));
    inputValue = computed(() => {
        const modelValue = this.modelValue();
        const selectedOption = this.optionValueSelected ? (this.suggestions || []).find((option) => equals(option, modelValue, this.equalityKey())) : modelValue;
        if (isNotEmpty(modelValue)) {
            if (typeof modelValue === 'object' || this.optionValueSelected) {
                const label = this.getOptionLabel(selectedOption);
                return label != null ? label : modelValue;
            }
            else {
                return modelValue;
            }
        }
        else {
            return '';
        }
    }, ...(ngDevMode ? [{ debugName: "inputValue" }] : []));
    get focusedMultipleOptionId() {
        return this.focusedMultipleOptionIndex() !== -1 ? `${this.id}_multiple_option_${this.focusedMultipleOptionIndex()}` : null;
    }
    get focusedOptionId() {
        return this.focusedOptionIndex() !== -1 ? `${this.id}_${this.focusedOptionIndex()}` : null;
    }
    get searchResultMessageText() {
        return isNotEmpty(this.visibleOptions()) && this.overlayVisible ? this.searchMessageText.replaceAll('{0}', this.visibleOptions().length) : this.emptySearchMessageText;
    }
    get searchMessageText() {
        return this.searchMessage || this.config.translation.searchMessage || '';
    }
    get emptySearchMessageText() {
        return this.emptyMessage || this.config.translation.emptySearchMessage || '';
    }
    get selectionMessageText() {
        return this.selectionMessage || this.config.translation.selectionMessage || '';
    }
    get emptySelectionMessageText() {
        return this.emptySelectionMessage || this.config.translation.emptySelectionMessage || '';
    }
    get selectedMessageText() {
        return this.hasSelectedOption() ? this.selectionMessageText.replaceAll('{0}', this.multiple ? this.modelValue()?.length : '1') : this.emptySelectionMessageText;
    }
    get ariaSetSize() {
        return this.visibleOptions().filter((option) => !this.isOptionGroup(option)).length;
    }
    get listLabel() {
        return this.config.getTranslation(TranslationKeys.ARIA)['listLabel'];
    }
    get virtualScrollerDisabled() {
        return !this.virtualScroll;
    }
    get optionValueSelected() {
        return typeof this.modelValue() === 'string' && this.optionValue;
    }
    chipItemClass(index) {
        return this._componentStyle.classes.chipItem({ instance: this, i: index });
    }
    constructor(overlayService, zone) {
        super();
        this.overlayService = overlayService;
        this.zone = zone;
    }
    onInit() {
        this.id = this.id || uuid('pn_id_');
        this.cd.detectChanges();
    }
    templates;
    onAfterContentInit() {
        this.templates.forEach((item) => {
            switch (item.getType()) {
                case 'item':
                    this._itemTemplate = item.template;
                    break;
                case 'group':
                    this._groupTemplate = item.template;
                    break;
                case 'selecteditem':
                    this._selectedItemTemplate = item.template;
                    break;
                case 'selectedItem':
                    this._selectedItemTemplate = item.template;
                    break;
                case 'header':
                    this._headerTemplate = item.template;
                    break;
                case 'empty':
                    this._emptyTemplate = item.template;
                    break;
                case 'footer':
                    this._footerTemplate = item.template;
                    break;
                case 'loader':
                    this._loaderTemplate = item.template;
                    break;
                case 'removetokenicon':
                    this._removeIconTemplate = item.template;
                    break;
                case 'loadingicon':
                    this._loadingIconTemplate = item.template;
                    break;
                case 'clearicon':
                    this._clearIconTemplate = item.template;
                    break;
                case 'dropdownicon':
                    this._dropdownIconTemplate = item.template;
                    break;
                default:
                    this._itemTemplate = item.template;
                    break;
            }
        });
    }
    onAfterViewChecked() {
        this.bindDirectiveInstance.setAttrs(this.ptms(['host', 'root']));
        //Use timeouts as since Angular 4.2, AfterViewChecked is broken and not called after panel is updated
        if (this.suggestionsUpdated && this.overlayViewChild) {
            this.zone.runOutsideAngular(() => {
                setTimeout(() => {
                    if (this.overlayViewChild) {
                        this.overlayViewChild.alignOverlay();
                    }
                }, 1);
                this.suggestionsUpdated = false;
            });
        }
    }
    handleSuggestionsChange() {
        if (this.loading) {
            this._suggestions()?.length > 0 || this.showEmptyMessage || !!this.emptyTemplate ? this.show() : this.hide();
            const focusedOptionIndex = this.overlayVisible && this.autoOptionFocus ? this.findFirstFocusedOptionIndex() : -1;
            this.focusedOptionIndex.set(focusedOptionIndex);
            this.suggestionsUpdated = true;
            this.loading = false;
            this.cd.markForCheck();
        }
    }
    flatOptions(options) {
        return (options || []).reduce((result, option, index) => {
            result.push({ optionGroup: option, group: true, index });
            const optionGroupChildren = this.getOptionGroupChildren(option);
            optionGroupChildren && optionGroupChildren.forEach((o) => result.push(o));
            return result;
        }, []);
    }
    isOptionGroup(option) {
        return this.optionGroupLabel && option.optionGroup && option.group;
    }
    findFirstOptionIndex() {
        return this.visibleOptions().findIndex((option) => this.isValidOption(option));
    }
    findLastOptionIndex() {
        return findLastIndex(this.visibleOptions(), (option) => this.isValidOption(option));
    }
    findFirstFocusedOptionIndex() {
        const selectedIndex = this.findSelectedOptionIndex();
        return selectedIndex < 0 ? this.findFirstOptionIndex() : selectedIndex;
    }
    findLastFocusedOptionIndex() {
        const selectedIndex = this.findSelectedOptionIndex();
        return selectedIndex < 0 ? this.findLastOptionIndex() : selectedIndex;
    }
    findSelectedOptionIndex() {
        return this.hasSelectedOption() ? this.visibleOptions().findIndex((option) => this.isValidSelectedOption(option)) : -1;
    }
    findNextOptionIndex(index) {
        const matchedOptionIndex = index < this.visibleOptions().length - 1
            ? this.visibleOptions()
                .slice(index + 1)
                .findIndex((option) => this.isValidOption(option))
            : -1;
        return matchedOptionIndex > -1 ? matchedOptionIndex + index + 1 : index;
    }
    findPrevOptionIndex(index) {
        const matchedOptionIndex = index > 0 ? findLastIndex(this.visibleOptions().slice(0, index), (option) => this.isValidOption(option)) : -1;
        return matchedOptionIndex > -1 ? matchedOptionIndex : index;
    }
    isValidSelectedOption(option) {
        return this.isValidOption(option) && this.isSelected(option);
    }
    isValidOption(option) {
        return option && !(this.isOptionDisabled(option) || this.isOptionGroup(option));
    }
    isOptionDisabled(option) {
        return this.optionDisabled ? resolveFieldData(option, this.optionDisabled) : false;
    }
    isSelected(option) {
        if (this.multiple) {
            return this.unique ? this.modelValue()?.some((model) => equals(model, option, this.equalityKey())) : false;
        }
        return equals(this.modelValue(), option, this.equalityKey());
    }
    isOptionMatched(option, value) {
        return this.isValidOption(option) && this.getOptionLabel(option).toLocaleLowerCase(this.searchLocale) === value.toLocaleLowerCase(this.searchLocale);
    }
    isInputClicked(event) {
        return event.target === this.inputEL?.nativeElement;
    }
    isDropdownClicked(event) {
        return this.dropdownButton?.nativeElement ? event.target === this.dropdownButton.nativeElement || this.dropdownButton.nativeElement.contains(event.target) : false;
    }
    equalityKey() {
        return this.optionValue ? undefined : this.dataKey;
    }
    onContainerClick(event) {
        if (this.$disabled() || this.loading || this.isInputClicked(event) || this.isDropdownClicked(event)) {
            return;
        }
        if (!this.overlayViewChild || !this.overlayViewChild.overlayViewChild?.nativeElement.contains(event.target)) {
            focus(this.inputEL?.nativeElement);
        }
    }
    handleDropdownClick(event) {
        let query = undefined;
        if (this.overlayVisible) {
            this.hide(true);
        }
        else {
            focus(this.inputEL?.nativeElement);
            query = this.inputEL?.nativeElement?.value;
            if (this.dropdownMode === 'blank')
                this.search(event, '', 'dropdown');
            else if (this.dropdownMode === 'current')
                this.search(event, query, 'dropdown');
        }
        this.onDropdownClick.emit({ originalEvent: event, query });
    }
    onInput(event) {
        if (this.typeahead) {
            const _minLength = this.minQueryLength || this.minLength;
            if (this.searchTimeout) {
                clearTimeout(this.searchTimeout);
            }
            let query = event.target.value;
            if (this.maxlength() !== null) {
                query = query.split('').slice(0, this.maxlength()).join('');
            }
            if (!this.multiple && !this.forceSelection) {
                this.updateModel(query);
            }
            if (query.length === 0 && !this.multiple) {
                this.onClear.emit();
                setTimeout(() => {
                    this.hide();
                }, this.delay / 2);
            }
            else {
                if (query.length >= _minLength) {
                    this.focusedOptionIndex.set(-1);
                    this.searchTimeout = setTimeout(() => {
                        this.search(event, query, 'input');
                    }, this.delay);
                }
                else {
                    this.hide();
                }
            }
        }
    }
    onInputChange(event) {
        this.updateInputWithForceSelection(event);
    }
    onInputFocus(event) {
        if (this.$disabled()) {
            // For ScreenReaders
            return;
        }
        if (!this.dirty && this.completeOnFocus) {
            this.search(event, event.target.value, 'focus');
        }
        this.dirty = true;
        this.focused = true;
        const focusedOptionIndex = this.focusedOptionIndex() !== -1 ? this.focusedOptionIndex() : this.overlayVisible && this.autoOptionFocus ? this.findFirstFocusedOptionIndex() : -1;
        this.focusedOptionIndex.set(focusedOptionIndex);
        this.overlayVisible && this.scrollInView(this.focusedOptionIndex());
        this.onFocus.emit(event);
    }
    onMultipleContainerFocus(event) {
        if (this.$disabled()) {
            // For ScreenReaders
            return;
        }
        this.focused = true;
    }
    onMultipleContainerBlur(event) {
        this.focusedMultipleOptionIndex.set(-1);
        this.focused = false;
    }
    onMultipleContainerKeyDown(event) {
        if (this.$disabled()) {
            event.preventDefault();
            return;
        }
        switch (event.code) {
            case 'ArrowLeft':
                this.onArrowLeftKeyOnMultiple(event);
                break;
            case 'ArrowRight':
                this.onArrowRightKeyOnMultiple(event);
                break;
            case 'Backspace':
                this.onBackspaceKeyOnMultiple(event);
                break;
            default:
                break;
        }
    }
    onInputBlur(event) {
        this.dirty = false;
        this.focused = false;
        this.focusedOptionIndex.set(-1);
        if (this.addOnBlur && this.multiple && !this.typeahead) {
            const inputValue = (this.multiInputEl?.nativeElement?.value || event.target.value || '').trim();
            if (inputValue && !this.isSelected(inputValue)) {
                this.updateModel([...(this.modelValue() || []), inputValue]);
                this.onAdd.emit({ originalEvent: event, value: inputValue });
                if (this.multiInputEl?.nativeElement) {
                    this.multiInputEl.nativeElement.value = '';
                }
                else {
                    event.target.value = '';
                }
            }
        }
        this.onModelTouched();
        this.onBlur.emit(event);
    }
    onInputPaste(event) {
        if (this.separator && this.multiple && !this.typeahead) {
            const pastedData = (event.clipboardData || window['clipboardData'])?.getData('Text');
            if (pastedData) {
                const values = pastedData.split(this.separator);
                const newValues = [...(this.modelValue() || [])];
                values.forEach((value) => {
                    const trimmedValue = value.trim();
                    if (trimmedValue && !this.isSelected(trimmedValue)) {
                        newValues.push(trimmedValue);
                    }
                });
                if (newValues.length > (this.modelValue() || []).length) {
                    const addedValues = newValues.slice((this.modelValue() || []).length);
                    this.updateModel(newValues);
                    addedValues.forEach((addedValue) => {
                        this.onAdd.emit({ originalEvent: event, value: addedValue });
                    });
                    if (this.multiInputEl?.nativeElement) {
                        this.multiInputEl.nativeElement.value = '';
                    }
                    else {
                        event.target.value = '';
                    }
                    event.preventDefault();
                }
            }
        }
        else {
            this.onKeyDown(event);
        }
    }
    onInputKeyUp(event) {
        this.onKeyUp.emit(event);
    }
    onKeyDown(event) {
        if (this.$disabled()) {
            event.preventDefault();
            return;
        }
        // Emit keydown event for external handling
        this.onInputKeydown.emit(event);
        switch (event.code) {
            case 'ArrowDown':
                this.onArrowDownKey(event);
                break;
            case 'ArrowUp':
                this.onArrowUpKey(event);
                break;
            case 'ArrowLeft':
                this.onArrowLeftKey(event);
                break;
            case 'ArrowRight':
                this.onArrowRightKey(event);
                break;
            case 'Home':
                this.onHomeKey(event);
                break;
            case 'End':
                this.onEndKey(event);
                break;
            case 'PageDown':
                this.onPageDownKey(event);
                break;
            case 'PageUp':
                this.onPageUpKey(event);
                break;
            case 'Enter':
            case 'NumpadEnter':
                this.onEnterKey(event);
                break;
            case 'Escape':
                this.onEscapeKey(event);
                break;
            case 'Tab':
                this.onTabKey(event);
                break;
            case 'Backspace':
                this.onBackspaceKey(event);
                break;
            case 'ShiftLeft':
            case 'ShiftRight':
                //NOOP
                break;
            default:
                this.handleSeparatorKey(event);
                break;
        }
    }
    handleSeparatorKey(event) {
        if (this.separator && this.multiple && !this.typeahead) {
            if (this.separator === event.key || (typeof this.separator === 'string' && event.key === this.separator) || (this.separator instanceof RegExp && event.key.match(this.separator))) {
                const inputValue = (this.multiInputEl?.nativeElement?.value || event.target.value || '').trim();
                if (inputValue && !this.isSelected(inputValue)) {
                    this.updateModel([...(this.modelValue() || []), inputValue]);
                    this.onAdd.emit({ originalEvent: event, value: inputValue });
                    if (this.multiInputEl?.nativeElement) {
                        this.multiInputEl.nativeElement.value = '';
                    }
                    else {
                        event.target.value = '';
                    }
                    event.preventDefault();
                }
            }
        }
    }
    onArrowDownKey(event) {
        if (!this.overlayVisible) {
            return;
        }
        const optionIndex = this.focusedOptionIndex() !== -1 ? this.findNextOptionIndex(this.focusedOptionIndex()) : this.findFirstFocusedOptionIndex();
        this.changeFocusedOptionIndex(event, optionIndex);
        event.preventDefault();
        event.stopPropagation();
    }
    onArrowUpKey(event) {
        if (!this.overlayVisible) {
            return;
        }
        if (event.altKey) {
            if (this.focusedOptionIndex() !== -1) {
                this.onOptionSelect(event, this.visibleOptions()[this.focusedOptionIndex()]);
            }
            this.overlayVisible && this.hide();
            event.preventDefault();
        }
        else {
            const optionIndex = this.focusedOptionIndex() !== -1 ? this.findPrevOptionIndex(this.focusedOptionIndex()) : this.findLastFocusedOptionIndex();
            this.changeFocusedOptionIndex(event, optionIndex);
            event.preventDefault();
            event.stopPropagation();
        }
    }
    onArrowLeftKey(event) {
        const target = event.currentTarget;
        this.focusedOptionIndex.set(-1);
        if (this.multiple) {
            if (isEmpty(target.value) && this.hasSelectedOption()) {
                focus(this.multiContainerEL?.nativeElement);
                this.focusedMultipleOptionIndex.set(this.modelValue().length);
            }
            else {
                event.stopPropagation(); // To prevent onArrowLeftKeyOnMultiple method
            }
        }
    }
    onArrowRightKey(event) {
        this.focusedOptionIndex.set(-1);
        this.multiple && event.stopPropagation(); // To prevent onArrowRightKeyOnMultiple method
    }
    onHomeKey(event) {
        const { currentTarget } = event;
        const len = currentTarget.value.length;
        currentTarget.setSelectionRange(0, event.shiftKey ? len : 0);
        this.focusedOptionIndex.set(-1);
        event.preventDefault();
    }
    onEndKey(event) {
        const { currentTarget } = event;
        const len = currentTarget.value.length;
        currentTarget.setSelectionRange(event.shiftKey ? 0 : len, len);
        this.focusedOptionIndex.set(-1);
        event.preventDefault();
    }
    onPageDownKey(event) {
        this.scrollInView(this.visibleOptions().length - 1);
        event.preventDefault();
    }
    onPageUpKey(event) {
        this.scrollInView(0);
        event.preventDefault();
    }
    onEnterKey(event) {
        if (!this.typeahead && !this.forceSelection) {
            if (this.multiple) {
                const inputValue = event.target.value?.trim();
                if (inputValue && !this.isSelected(inputValue)) {
                    this.updateModel([...(this.modelValue() || []), inputValue]);
                    this.inputEL?.nativeElement && (this.inputEL.nativeElement.value = '');
                }
            }
        }
        if (!this.overlayVisible) {
            return;
        }
        else {
            if (this.focusedOptionIndex() !== -1) {
                this.onOptionSelect(event, this.visibleOptions()[this.focusedOptionIndex()]);
            }
            this.hide();
        }
        event.preventDefault();
    }
    onEscapeKey(event) {
        this.overlayVisible && this.hide(true);
        event.preventDefault();
    }
    onTabKey(event) {
        // If there's a focused option in the dropdown, select it
        if (this.focusedOptionIndex() !== -1) {
            this.onOptionSelect(event, this.visibleOptions()[this.focusedOptionIndex()]);
            return;
        }
        // Handle tab key behavior for multiple mode without typeahead
        if (this.multiple && !this.typeahead) {
            const inputValue = (this.multiInputEl?.nativeElement?.value || this.inputEL?.nativeElement?.value || '').trim();
            if (this.addOnTab) {
                if (inputValue && !this.isSelected(inputValue)) {
                    // Add the value and keep focus
                    this.updateModel([...(this.modelValue() || []), inputValue]);
                    this.onAdd.emit({ originalEvent: event, value: inputValue });
                    if (this.multiInputEl?.nativeElement) {
                        this.multiInputEl.nativeElement.value = '';
                    }
                    else if (this.inputEL?.nativeElement) {
                        this.inputEL.nativeElement.value = '';
                    }
                    this.updateInputValue();
                    event.preventDefault(); // Keep focus on the component
                    this.overlayVisible && this.hide();
                    return;
                }
                // If no value or already selected, allow normal tab behavior (blur)
            }
            // If addOnTab is false or no value to add, allow normal tab behavior
            // which will trigger blur and potentially addOnBlur
        }
        this.overlayVisible && this.hide();
    }
    onBackspaceKey(event) {
        if (this.multiple) {
            if (isNotEmpty(this.modelValue()) && !this.inputEL?.nativeElement?.value) {
                const removedValue = this.modelValue()[this.modelValue().length - 1];
                const newValue = this.modelValue().slice(0, -1);
                this.updateModel(newValue);
                this.onUnselect.emit({ originalEvent: event, value: removedValue });
            }
            event.stopPropagation(); // To prevent onBackspaceKeyOnMultiple method
        }
    }
    onArrowLeftKeyOnMultiple(event) {
        const optionIndex = this.focusedMultipleOptionIndex() < 1 ? 0 : this.focusedMultipleOptionIndex() - 1;
        this.focusedMultipleOptionIndex.set(optionIndex);
    }
    onArrowRightKeyOnMultiple(event) {
        let optionIndex = this.focusedMultipleOptionIndex();
        optionIndex++;
        this.focusedMultipleOptionIndex.set(optionIndex);
        if (optionIndex > this.modelValue().length - 1) {
            this.focusedMultipleOptionIndex.set(-1);
            focus(this.inputEL?.nativeElement);
        }
    }
    onBackspaceKeyOnMultiple(event) {
        if (this.focusedMultipleOptionIndex() !== -1) {
            this.removeOption(event, this.focusedMultipleOptionIndex());
        }
    }
    onOptionSelect(event, option, isHide = true) {
        if (this.multiple) {
            this.inputEL?.nativeElement && (this.inputEL.nativeElement.value = '');
            if (!this.isSelected(option)) {
                this.updateModel([...(this.modelValue() || []), option]);
            }
        }
        else {
            this.updateModel(option);
        }
        this.onSelect.emit({ originalEvent: event, value: option });
        isHide && this.hide(true);
    }
    onOptionMouseEnter(event, index) {
        if (this.focusOnHover) {
            this.changeFocusedOptionIndex(event, index);
        }
    }
    search(event, query, source) {
        //allow empty string but not undefined or null
        if (query === undefined || query === null) {
            return;
        }
        //do not search blank values on input change
        if (source === 'input' && query.trim().length === 0) {
            return;
        }
        this.loading = true;
        this.completeMethod.emit({ originalEvent: event, query });
    }
    removeOption(event, index) {
        event.stopPropagation();
        const removedOption = this.modelValue()[index];
        const value = this.modelValue().filter((_, i) => i !== index);
        this.updateModel(value);
        this.onUnselect.emit({ originalEvent: event, value: removedOption });
        focus(this.inputEL?.nativeElement);
    }
    updateModel(options) {
        let value = null;
        if (options) {
            value = this.multiple ? options.map((option) => this.getOptionValue(option)) : this.getOptionValue(options);
        }
        this.value = value;
        this.writeModelValue(options);
        this.onModelChange(value);
        this.updateInputValue();
        this.cd.markForCheck();
    }
    updateInputValue() {
        if (this.inputEL && this.inputEL.nativeElement) {
            if (!this.multiple) {
                this.inputEL.nativeElement.value = this.inputValue();
            }
            else {
                this.inputEL.nativeElement.value = '';
            }
        }
    }
    updateInputWithForceSelection(event) {
        const input = this.inputEL?.nativeElement;
        if (!this.forceSelection || this.overlayVisible || !input.value) {
            return;
        }
        const matchedOption = this.visibleOptions()?.find((option) => this.isOptionMatched(option, input.value));
        if (!matchedOption) {
            input.value = '';
            if (!this.multiple) {
                this.clear();
            }
            return;
        }
        if (matchedOption && !this.isSelected(matchedOption)) {
            this.onOptionSelect(event, matchedOption);
        }
    }
    autoUpdateModel() {
        if ((this.selectOnFocus || this.autoHighlight) && this.autoOptionFocus && !this.hasSelectedOption()) {
            const focusedOptionIndex = this.findFirstFocusedOptionIndex();
            this.focusedOptionIndex.set(focusedOptionIndex);
            this.onOptionSelect(null, this.visibleOptions()[this.focusedOptionIndex()], false);
        }
    }
    scrollInView(index = -1) {
        const id = index !== -1 ? `${this.id}_${index}` : this.focusedOptionId;
        if (this.itemsViewChild && this.itemsViewChild.nativeElement) {
            const element = findSingle(this.itemsViewChild.nativeElement, `li[id="${id}"]`);
            if (element) {
                element.scrollIntoView && element.scrollIntoView({ block: 'nearest', inline: 'nearest' });
            }
            else if (!this.virtualScrollerDisabled) {
                setTimeout(() => {
                    this.virtualScroll && this.scroller?.scrollToIndex(index !== -1 ? index : this.focusedOptionIndex());
                }, 0);
            }
        }
    }
    changeFocusedOptionIndex(event, index) {
        if (this.focusedOptionIndex() !== index) {
            this.focusedOptionIndex.set(index);
            this.scrollInView();
            if (this.selectOnFocus) {
                this.onOptionSelect(event, this.visibleOptions()[index], false);
            }
        }
    }
    show(isFocus = false) {
        this.dirty = true;
        this.overlayVisible = true;
        const focusedOptionIndex = this.focusedOptionIndex() !== -1 ? this.focusedOptionIndex() : this.autoOptionFocus ? this.findFirstFocusedOptionIndex() : -1;
        this.focusedOptionIndex.set(focusedOptionIndex);
        isFocus && focus(this.inputEL?.nativeElement);
        if (isFocus) {
            focus(this.inputEL?.nativeElement);
        }
        this.onShow.emit();
        this.cd.markForCheck();
    }
    hide(isFocus = false) {
        const _hide = () => {
            this.dirty = isFocus;