import * as i4 from '@angular/cdk/scrolling';
import { CdkVirtualScrollViewport, ScrollingModule } from '@angular/cdk/scrolling';
import * as i0 from '@angular/core';
import { forwardRef, EventEmitter, Component, Input, Output, ChangeDetectionStrategy, ViewEncapsulation, ViewChild, ContentChildren, NgModule } from '@angular/core';
import { trigger, transition, style, animate } from '@angular/animations';
import * as i2 from '@angular/common';
import { CommonModule } from '@angular/common';
import * as i3 from 'primeng/api';
import { TranslationKeys, PrimeTemplate, SharedModule } from 'primeng/api';
import { DomHandler, ConnectedOverlayScrollHandler } from 'primeng/dom';
import { UniqueComponentId, ObjectUtils, ZIndexUtils } from 'primeng/utils';
import { NG_VALUE_ACCESSOR } from '@angular/forms';
import * as i5 from 'primeng/tooltip';
import { TooltipModule } from 'primeng/tooltip';
import * as i1 from 'primeng/ripple';
import { RippleModule } from 'primeng/ripple';

const DROPDOWN_VALUE_ACCESSOR = {
    provide: NG_VALUE_ACCESSOR,
    useExisting: forwardRef(() => Dropdown),
    multi: true
};
class DropdownItem {
    constructor() {
        this.onClick = new EventEmitter();
    }
    onOptionClick(event) {
        this.onClick.emit({
            originalEvent: event,
            option: this.option
        });
    }
}
DropdownItem.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: DropdownItem, deps: [], target: i0.ɵɵFactoryTarget.Component });
DropdownItem.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.0.0", type: DropdownItem, selector: "p-dropdownItem", inputs: { option: "option", selected: "selected", label: "label", disabled: "disabled", visible: "visible", itemSize: "itemSize", template: "template" }, outputs: { onClick: "onClick" }, host: { classAttribute: "p-element" }, ngImport: i0, template: `
        <li (click)="onOptionClick($event)" role="option" pRipple
            [attr.aria-label]="label" [attr.aria-selected]="selected"
            [ngStyle]="{'height': itemSize + 'px'}" [id]="selected ? 'p-highlighted-option':''"
            [ngClass]="{'p-dropdown-item':true, 'p-highlight': selected, 'p-disabled': disabled}">
            <span *ngIf="!template">{{label||'empty'}}</span>
            <ng-container *ngTemplateOutlet="template; context: {$implicit: option}"></ng-container>
        </li>
    `, isInline: true, directives: [{ type: i1.Ripple, selector: "[pRipple]" }, { type: i2.NgStyle, selector: "[ngStyle]", inputs: ["ngStyle"] }, { type: i2.NgClass, selector: "[ngClass]", inputs: ["class", "ngClass"] }, { type: i2.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { type: i2.NgTemplateOutlet, selector: "[ngTemplateOutlet]", inputs: ["ngTemplateOutletContext", "ngTemplateOutlet"] }] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: DropdownItem, decorators: [{
            type: Component,
            args: [{
                    selector: 'p-dropdownItem',
                    template: `
        <li (click)="onOptionClick($event)" role="option" pRipple
            [attr.aria-label]="label" [attr.aria-selected]="selected"
            [ngStyle]="{'height': itemSize + 'px'}" [id]="selected ? 'p-highlighted-option':''"
            [ngClass]="{'p-dropdown-item':true, 'p-highlight': selected, 'p-disabled': disabled}">
            <span *ngIf="!template">{{label||'empty'}}</span>
            <ng-container *ngTemplateOutlet="template; context: {$implicit: option}"></ng-container>
        </li>
    `,
                    host: {
                        'class': 'p-element'
                    }
                }]
        }], propDecorators: { option: [{
                type: Input
            }], selected: [{
                type: Input
            }], label: [{
                type: Input
            }], disabled: [{
                type: Input
            }], visible: [{
                type: Input
            }], itemSize: [{
                type: Input
            }], template: [{
                type: Input
            }], onClick: [{
                type: Output
            }] } });
class Dropdown {
    constructor(el, renderer, cd, zone, filterService, config, overlayService) {
        this.el = el;
        this.renderer = renderer;
        this.cd = cd;
        this.zone = zone;
        this.filterService = filterService;
        this.config = config;
        this.overlayService = overlayService;
        this.scrollHeight = '200px';
        this.resetFilterOnHide = false;
        this.dropdownIcon = 'pi pi-chevron-down';
        this.optionGroupChildren = "items";
        this.autoDisplayFirst = true;
        this.emptyFilterMessage = '';
        this.emptyMessage = '';
        this.autoZIndex = true;
        this.baseZIndex = 0;
        this.showTransitionOptions = '.12s cubic-bezier(0, 0, 0.2, 1)';
        this.hideTransitionOptions = '.1s linear';
        this.filterMatchMode = "contains";
        this.tooltip = '';
        this.tooltipPosition = 'right';
        this.tooltipPositionStyle = 'absolute';
        this.autofocusFilter = true;
        this.onChange = new EventEmitter();
        this.onFilter = new EventEmitter();
        this.onFocus = new EventEmitter();
        this.onBlur = new EventEmitter();
        this.onClick = new EventEmitter();
        this.onShow = new EventEmitter();
        this.onHide = new EventEmitter();
        this.onClear = new EventEmitter();
        this.onModelChange = () => { };
        this.onModelTouched = () => { };
        this.viewPortOffsetTop = 0;
        this.id = UniqueComponentId();
    }
    get disabled() {
        return this._disabled;
    }
    ;
    set disabled(_disabled) {
        if (_disabled) {
            this.focused = false;
            if (this.overlayVisible)
                this.hide();
        }
        this._disabled = _disabled;
        if (!this.cd.destroyed) {
            this.cd.detectChanges();
        }
    }
    ngAfterContentInit() {
        this.templates.forEach((item) => {
            switch (item.getType()) {
                case 'item':
                    this.itemTemplate = item.template;
                    break;
                case 'selectedItem':
                    this.selectedItemTemplate = item.template;
                    break;
                case 'header':
                    this.headerTemplate = item.template;
                    break;
                case 'footer':
                    this.footerTemplate = item.template;
                    break;
                case 'emptyfilter':
                    this.emptyFilterTemplate = item.template;
                    break;
                case 'empty':
                    this.emptyTemplate = item.template;
                    break;
                case 'group':
                    this.groupTemplate = item.template;
                    break;
                default:
                    this.itemTemplate = item.template;
                    break;
            }
        });
    }
    ngOnInit() {
        this.optionsToDisplay = this.options;
        this.updateSelectedOption(null);
        this.labelId = this.id + '_label';
        this.listId = this.id + '_list';
    }
    get options() {
        return this._options;
    }
    set options(val) {
        this._options = val;
        this.optionsToDisplay = this._options;
        this.updateSelectedOption(this.value);
        this.optionsChanged = true;
        if (this._filterValue && this._filterValue.length) {
            this.activateFilter();
        }
    }
    get filterValue() {
        return this._filterValue;
    }
    set filterValue(val) {
        this._filterValue = val;
        this.activateFilter();
    }
    ngAfterViewInit() {
        if (this.editable) {
            this.updateEditableLabel();
        }
    }
    get label() {
        return this.selectedOption ? this.getOptionLabel(this.selectedOption) : null;
    }
    get emptyMessageLabel() {
        return this.emptyMessage || this.config.getTranslation(TranslationKeys.EMPTY_MESSAGE);
    }
    get emptyFilterMessageLabel() {
        return this.emptyFilterMessage || this.config.getTranslation(TranslationKeys.EMPTY_FILTER_MESSAGE);
    }
    get filled() {
        return this.value || this.value != null || this.value != undefined;
    }
    updateEditableLabel() {
        if (this.editableInputViewChild && this.editableInputViewChild.nativeElement) {
            this.editableInputViewChild.nativeElement.value = (this.selectedOption ? this.getOptionLabel(this.selectedOption) : this.value || '');
        }
    }
    getOptionLabel(option) {
        return this.optionLabel ? ObjectUtils.resolveFieldData(option, this.optionLabel) : (option.label != undefined ? option.label : option);
    }
    getOptionValue(option) {
        return this.optionValue ? ObjectUtils.resolveFieldData(option, this.optionValue) : (this.optionLabel || option.value === undefined ? option : option.value);
    }
    isOptionDisabled(option) {
        return this.optionDisabled ? ObjectUtils.resolveFieldData(option, this.optionDisabled) : (option.disabled !== undefined ? option.disabled : false);
    }
    getOptionGroupLabel(optionGroup) {
        return this.optionGroupLabel ? ObjectUtils.resolveFieldData(optionGroup, this.optionGroupLabel) : (optionGroup.label != undefined ? optionGroup.label : optionGroup);
    }
    getOptionGroupChildren(optionGroup) {
        return this.optionGroupChildren ? ObjectUtils.resolveFieldData(optionGroup, this.optionGroupChildren) : optionGroup.items;
    }
    onItemClick(event) {
        const option = event.option;
        if (!this.isOptionDisabled(option)) {
            this.selectItem(event, option);
            this.accessibleViewChild.nativeElement.focus();
        }
        setTimeout(() => {
            this.hide();
        }, 150);
    }
    selectItem(event, option) {
        if (this.selectedOption != option) {
            this.selectedOption = option;
            this.value = this.getOptionValue(option);
            this.onModelChange(this.value);
            this.updateEditableLabel();
            this.onChange.emit({
                originalEvent: event.originalEvent,
                value: this.value
            });
            if (this.virtualScroll) {
                setTimeout(() => {
                    this.viewPortOffsetTop = this.viewPort ? this.viewPort.measureScrollOffset() : 0;
                }, 1);
            }
        }
    }
    ngAfterViewChecked() {
        if (this.optionsChanged && this.overlayVisible) {
            this.optionsChanged = false;
            if (this.virtualScroll) {
                this.updateVirtualScrollSelectedIndex(true);
            }
            this.zone.runOutsideAngular(() => {
                setTimeout(() => {
                    this.alignOverlay();
                }, 1);
            });
        }
        if (this.selectedOptionUpdated && this.itemsWrapper) {
            if (this.virtualScroll && this.viewPort) {
                let range = this.viewPort.getRenderedRange();
                this.updateVirtualScrollSelectedIndex(false);
                if (range.start > this.virtualScrollSelectedIndex || range.end < this.virtualScrollSelectedIndex) {
                    this.viewPort.scrollToIndex(this.virtualScrollSelectedIndex);
                }
            }
            let selectedItem = DomHandler.findSingle(this.overlay, 'li.p-highlight');
            if (selectedItem) {
                DomHandler.scrollInView(this.itemsWrapper, DomHandler.findSingle(this.overlay, 'li.p-highlight'));
            }
            this.selectedOptionUpdated = false;
        }
    }
    writeValue(value) {
        if (this.filter) {
            this.resetFilter();
        }
        this.value = value;
        this.updateSelectedOption(value);
        this.updateEditableLabel();
        this.cd.markForCheck();
    }
    resetFilter() {
        this._filterValue = null;
        if (this.filterViewChild && this.filterViewChild.nativeElement) {
            this.filterViewChild.nativeElement.value = '';
        }
        this.optionsToDisplay = this.options;
    }
    updateSelectedOption(val) {
        this.selectedOption = this.findOption(val, this.optionsToDisplay);
        if (this.autoDisplayFirst && !this.placeholder && !this.selectedOption && this.optionsToDisplay && this.optionsToDisplay.length && !this.editable) {
            this.selectedOption = this.optionsToDisplay[0];
            this.value = this.getOptionValue(this.selectedOption);
            this.onModelChange(this.value);
        }
        this.selectedOptionUpdated = true;
    }
    registerOnChange(fn) {
        this.onModelChange = fn;
    }
    registerOnTouched(fn) {
        this.onModelTouched = fn;
    }
    setDisabledState(val) {
        this.disabled = val;
        this.cd.markForCheck();
    }
    onMouseclick(event) {
        if (this.disabled || this.readonly || this.isInputClick(event)) {
            return;
        }
        this.onClick.emit(event);
        this.accessibleViewChild.nativeElement.focus();
        if (this.overlayVisible)
            this.hide();
        else
            this.show();
        this.cd.detectChanges();
    }
    onOverlayClick(event) {
        this.overlayService.add({
            originalEvent: event,
            target: this.el.nativeElement
        });
    }
    isInputClick(event) {
        return DomHandler.hasClass(event.target, 'p-dropdown-clear-icon') ||
            event.target.isSameNode(this.accessibleViewChild.nativeElement) ||
            (this.editableInputViewChild && event.target.isSameNode(this.editableInputViewChild.nativeElement));
    }
    isOutsideClicked(event) {
        return !(this.el.nativeElement.isSameNode(event.target) || this.el.nativeElement.contains(event.target) || (this.overlay && this.overlay.contains(event.target)));
    }
    isEmpty() {
        return !this.optionsToDisplay || (this.optionsToDisplay && this.optionsToDisplay.length === 0);
    }
    onEditableInputClick() {
        this.bindDocumentClickListener();
    }
    onEditableInputFocus(event) {
        this.focused = true;
        this.hide();
        this.onFocus.emit(event);
    }
    onEditableInputChange(event) {
        this.value = event.target.value;
        this.updateSelectedOption(this.value);
        this.onModelChange(this.value);
        this.onChange.emit({
            originalEvent: event,
            value: this.value
        });
    }
    show() {
        this.overlayVisible = true;
    }
    onOverlayAnimationStart(event) {
        switch (event.toState) {
            case 'visible':
                this.overlay = event.element;
                let itemsWrapperSelector = this.virtualScroll ? '.cdk-virtual-scroll-viewport' : '.p-dropdown-items-wrapper';
                this.itemsWrapper = DomHandler.findSingle(this.overlay, itemsWrapperSelector);
                this.appendOverlay();
                if (this.autoZIndex) {
                    ZIndexUtils.set('overlay', this.overlay, this.baseZIndex + this.config.zIndex.overlay);
                }
                this.alignOverlay();
                this.bindDocumentClickListener();
                this.bindDocumentResizeListener();
                this.bindScrollListener();
                if (this.options && this.options.length) {
                    if (!this.virtualScroll) {
                        let selectedListItem = DomHandler.findSingle(this.itemsWrapper, '.p-dropdown-item.p-highlight');
                        if (selectedListItem) {
                            selectedListItem.scrollIntoView({ block: 'nearest', inline: 'start' });
                        }
                    }
                }
                if (this.filterViewChild && this.filterViewChild.nativeElement) {
                    this.preventModelTouched = true;
                    if (this.autofocusFilter) {
                        this.filterViewChild.nativeElement.focus();
                    }
                }
                this.onShow.emit(event);
                break;
            case 'void':
                this.onOverlayHide();
                this.onHide.emit(event);
                break;
        }
    }
    onOverlayAnimationEnd(event) {
        switch (event.toState) {
            case 'void':
                ZIndexUtils.clear(event.element);
                break;
        }
    }
    scrollToSelectedVirtualScrollElement() {
        if (!this.virtualAutoScrolled) {
            if (this.viewPortOffsetTop) {
                this.viewPort.scrollToOffset(this.viewPortOffsetTop);
            }
            else if (this.virtualScrollSelectedIndex > -1) {
                this.viewPort.scrollToIndex(this.virtualScrollSelectedIndex);
            }
        }
        this.virtualAutoScrolled = true;
    }
    updateVirtualScrollSelectedIndex(resetOffset) {
        if (this.selectedOption && this.optionsToDisplay && this.optionsToDisplay.length) {
            if (resetOffset) {
                this.viewPortOffsetTop = 0;
            }
            this.virtualScrollSelectedIndex = this.findOptionIndex(this.getOptionValue(this.selectedOption), this.optionsToDisplay);
        }
    }
    appendOverlay() {
        if (this.appendTo) {
            if (this.appendTo === 'body')
                document.body.appendChild(this.overlay);
            else
                DomHandler.appendChild(this.overlay, this.appendTo);
            if (!this.overlay.style.minWidth) {
                this.overlay.style.minWidth = DomHandler.getWidth(this.containerViewChild.nativeElement) + 'px';
            }
        }
    }
    restoreOverlayAppend() {
        if (this.overlay && this.appendTo) {
            this.el.nativeElement.appendChild(this.overlay);
        }
    }
    hide() {
        this.overlayVisible = false;
        if (this.filter && this.resetFilterOnHide) {
            this.resetFilter();
        }
        if (this.virtualScroll) {
            this.virtualAutoScrolled = false;
        }
        this.cd.markForCheck();
    }
    alignOverlay() {
        if (this.overlay) {
            if (this.appendTo)
                DomHandler.absolutePosition(this.overlay, this.containerViewChild.nativeElement);
            else
                DomHandler.relativePosition(this.overlay, this.containerViewChild.nativeElement);
        }
    }
    onInputFocus(event) {
        this.focused = true;
        this.onFocus.emit(event);
    }
    onInputBlur(event) {
        this.focused = false;
        this.onBlur.emit(event);
        if (!this.preventModelTouched) {
            this.onModelTouched();
        }
        this.preventModelTouched = false;
    }
    findPrevEnabledOption(index) {
        let prevEnabledOption;
        if (this.optionsToDisplay && this.optionsToDisplay.length) {
            for (let i = (index - 1); 0 <= i; i--) {
                let option = this.optionsToDisplay[i];
                if (option.disabled) {
                    continue;
                }
                else {
                    prevEnabledOption = option;
                    break;
                }
            }
            if (!prevEnabledOption) {
                for (let i = this.optionsToDisplay.length - 1; i >= index; i--) {
                    let option = this.optionsToDisplay[i];
                    if (this.isOptionDisabled(option)) {
                        continue;
                    }
                    else {
                        prevEnabledOption = option;
                        break;
                    }
                }
            }
        }
        return prevEnabledOption;
    }
    findNextEnabledOption(index) {
        let nextEnabledOption;
        if (this.optionsToDisplay && this.optionsToDisplay.length) {
            for (let i = (index + 1); i < this.optionsToDisplay.length; i++) {
                let option = this.optionsToDisplay[i];
                if (this.isOptionDisabled(option)) {
                    continue;
                }
                else {
                    nextEnabledOption = option;
                    break;
                }
            }
            if (!nextEnabledOption) {
                for (let i = 0; i < index; i++) {
                    let option = this.optionsToDisplay[i];
                    if (this.isOptionDisabled(option)) {
                        continue;
                    }
                    else {
                        nextEnabledOption = option;
                        break;
                    }
                }
            }
        }
        return nextEnabledOption;
    }
    onKeydown(event, search) {
        if (this.readonly || !this.optionsToDisplay || this.optionsToDisplay.length === null) {
            return;
        }
        switch (event.which) {
            //down
            case 40:
                if (!this.overlayVisible && event.altKey) {
                    this.show();
                }
                else {
                    if (this.group) {
                        let selectedItemIndex = this.selectedOption ? this.findOptionGroupIndex(this.getOptionValue(this.selectedOption), this.optionsToDisplay) : -1;
                        if (selectedItemIndex !== -1) {
                            let nextItemIndex = selectedItemIndex.itemIndex + 1;
                            if (nextItemIndex < (this.getOptionGroupChildren(this.optionsToDisplay[selectedItemIndex.groupIndex]).length)) {
                                this.selectItem(event, this.getOptionGroupChildren(this.optionsToDisplay[selectedItemIndex.groupIndex])[nextItemIndex]);
                                this.selectedOptionUpdated = true;
                            }
                            else if (this.optionsToDisplay[selectedItemIndex.groupIndex + 1]) {
                                this.selectItem(event, this.getOptionGroupChildren(this.optionsToDisplay[selectedItemIndex.groupIndex + 1])[0]);
                                this.selectedOptionUpdated = true;
                            }
                        }
                        else {
                            if (this.optionsToDisplay && this.optionsToDisplay.length > 0) {
                                this.selectItem(event, this.getOptionGroupChildren(this.optionsToDisplay[0])[0]);
                            }
                        }
                    }
                    else {
                        let selectedItemIndex = this.selectedOption ? this.findOptionIndex(this.getOptionValue(this.selectedOption), this.optionsToDisplay) : -1;
                        let nextEnabledOption = this.findNextEnabledOption(selectedItemIndex);
                        if (nextEnabledOption) {
                            this.selectItem(event, nextEnabledOption);
                            this.selectedOptionUpdated = true;
                        }
                    }
                }
                event.preventDefault();
                break;
            //up
            case 38:
                if (this.group) {
                    let selectedItemIndex = this.selectedOption ? this.findOptionGroupIndex(this.getOptionValue(this.selectedOption), this.optionsToDisplay) : -1;
                    if (selectedItemIndex !== -1) {
                        let prevItemIndex = selectedItemIndex.itemIndex - 1;
                        if (prevItemIndex >= 0) {
                            this.selectItem(event, this.getOptionGroupChildren(this.optionsToDisplay[selectedItemIndex.groupIndex])[prevItemIndex]);
                            this.selectedOptionUpdated = true;
                        }
                        else if (prevItemIndex < 0) {
                            let prevGroup = this.optionsToDisplay[selectedItemIndex.groupIndex - 1];
                            if (prevGroup) {
                                this.selectItem(event, this.getOptionGroupChildren(prevGroup)[this.getOptionGroupChildren(prevGroup).length - 1]);
                                this.selectedOptionUpdated = true;
                            }
                        }
                    }
                }
                else {
                    let selectedItemIndex = this.selectedOption ? this.findOptionIndex(this.getOptionValue(this.selectedOption), this.optionsToDisplay) : -1;
                    let prevEnabledOption = this.findPrevEnabledOption(selectedItemIndex);
                    if (prevEnabledOption) {
                        this.selectItem(event, prevEnabledOption);
                        this.selectedOptionUpdated = true;
                    }
                }
                event.preventDefault();
                break;
            //space
            case 32:
                if (search) {
                    if (!this.overlayVisible) {
                        this.show();
                    }
                    else {
                        this.hide();
                    }
                    event.preventDefault();
                }
                break;
            //enter
            case 13:
                if (this.overlayVisible && (!this.filter || (this.optionsToDisplay && this.optionsToDisplay.length > 0))) {
                    this.hide();
                }
                else if (!this.overlayVisible) {
                    this.show();
                }
                event.preventDefault();
                break;
            //escape and tab
            case 27:
            case 9:
                this.hide();
                break;
            //search item based on keyboard input
            default:
                if (search && !event.metaKey) {
                    this.search(event);
                }
                break;
        }
    }
    search(event) {
        if (this.searchTimeout) {
            clearTimeout(this.searchTimeout);
        }
        const char = event.key;
        this.previousSearchChar = this.currentSearchChar;
        this.currentSearchChar = char;
        if (this.previousSearchChar === this.currentSearchChar)
            this.searchValue = this.currentSearchChar;
        else
            this.searchValue = this.searchValue ? this.searchValue + char : char;
        let newOption;
        if (this.group) {
            let searchIndex = this.selectedOption ? this.findOptionGroupIndex(this.getOptionValue(this.selectedOption), this.optionsToDisplay) : { groupIndex: 0, itemIndex: 0 };
            newOption = this.searchOptionWithinGroup(searchIndex);
        }
        else {
            let searchIndex = this.selectedOption ? this.findOptionIndex(this.getOptionValue(this.selectedOption), this.optionsToDisplay) : -1;
            newOption = this.searchOption(++searchIndex);
        }
        if (newOption && !this.isOptionDisabled(newOption)) {
            this.selectItem(event, newOption);
            this.selectedOptionUpdated = true;
        }
        this.searchTimeout = setTimeout(() => {
            this.searchValue = null;
        }, 250);
    }
    searchOption(index) {
        let option;
        if (this.searchValue) {
            option = this.searchOptionInRange(index, this.optionsToDisplay.length);
            if (!option) {
                option = this.searchOptionInRange(0, index);
            }
        }
        return option;
    }
    searchOptionInRange(start, end) {
        for (let i = start; i < end; i++) {
            let opt = this.optionsToDisplay[i];
            if (this.getOptionLabel(opt).toLocaleLowerCase(this.filterLocale).startsWith(this.searchValue.toLocaleLowerCase(this.filterLocale)) && !this.isOptionDisabled(opt)) {
                return opt;
            }
        }
        return null;
    }
    searchOptionWithinGroup(index) {
        let option;
        if (this.searchValue) {
            for (let i = index.groupIndex; i < this.optionsToDisplay.length; i++) {
                for (let j = (index.groupIndex === i) ? (index.itemIndex + 1) : 0; j < this.getOptionGroupChildren(this.optionsToDisplay[i]).length; j++) {
                    let opt = this.getOptionGroupChildren(this.optionsToDisplay[i])[j];
                    if (this.getOptionLabel(opt).toLocaleLowerCase(this.filterLocale).startsWith(this.searchValue.toLocaleLowerCase(this.filterLocale)) && !this.isOptionDisabled(opt)) {
                        return opt;
                    }
                }
            }
            if (!option) {
                for (let i = 0; i <= index.groupIndex; i++) {
                    for (let j = 0; j < ((index.groupIndex === i) ? index.itemIndex : this.getOptionGroupChildren(this.optionsToDisplay[i]).length); j++) {
                        let opt = this.getOptionGroupChildren(this.optionsToDisplay[i])[j];
                        if (this.getOptionLabel(opt).toLocaleLowerCase(this.filterLocale).startsWith(this.searchValue.toLocaleLowerCase(this.filterLocale)) && !this.isOptionDisabled(opt)) {
                            return opt;
                        }
                    }
                }
            }
        }
        return null;
    }
    findOptionIndex(val, opts) {
        let index = -1;
        if (opts) {
            for (let i = 0; i < opts.length; i++) {
                if ((val == null && this.getOptionValue(opts[i]) == null) || ObjectUtils.equals(val, this.getOptionValue(opts[i]), this.dataKey)) {
                    index = i;
                    break;
                }
            }
        }
        return index;
    }
    findOptionGroupIndex(val, opts) {
        let groupIndex, itemIndex;
        if (opts) {
            for (let i = 0; i < opts.length; i++) {
                groupIndex = i;
                itemIndex = this.findOptionIndex(val, this.getOptionGroupChildren(opts[i]));
                if (itemIndex !== -1) {
                    break;
                }
            }
        }
        if (itemIndex !== -1) {
            return { groupIndex: groupIndex, itemIndex: itemIndex };
        }
        else {
            return -1;
        }
    }
    findOption(val, opts, inGroup) {
        if (this.group && !inGroup) {
            let opt;
            if (opts && opts.length) {
                for (let optgroup of opts) {
                    opt = this.findOption(val, this.getOptionGroupChildren(optgroup), true);
                    if (opt) {
                        break;
                    }
                }
            }
            return opt;
        }
        else {
            let index = this.findOptionIndex(val, opts);
            return (index != -1) ? opts[index] : null;
        }
    }
    onFilterInputChange(event) {
        let inputValue = event.target.value;
        if (inputValue && inputValue.length) {
            this._filterValue = inputValue;
            this.activateFilter();
        }
        else {
            this._filterValue = null;
            this.optionsToDisplay = this.options;
        }
        this.optionsChanged = true;
        this.onFilter.emit({ originalEvent: event, filter: this._filterValue });
    }
    activateFilter() {
        let searchFields = (this.filterBy || this.optionLabel || 'label').split(',');
        if (this.options && this.options.length) {
            if (this.group) {
                let filteredGroups = [];
                for (let optgroup of this.options) {
                    let filteredSubOptions = this.filterService.filter(this.getOptionGroupChildren(optgroup), searchFields, this.filterValue, this.filterMatchMode, this.filterLocale);
                    if (filteredSubOptions && filteredSubOptions.length) {
                        filteredGroups.push(Object.assign(Object.assign({}, optgroup), { [this.optionGroupChildren]: filteredSubOptions }));
                    }
                }
                this.optionsToDisplay = filteredGroups;
            }
            else {
                this.optionsToDisplay = this.filterService.filter(this.options, searchFields, this.filterValue, this.filterMatchMode, this.filterLocale);
            }
            this.optionsChanged = true;
        }
    }
    applyFocus() {
        if (this.editable)
            DomHandler.findSingle(this.el.nativeElement, '.p-dropdown-label.p-inputtext').focus();
        else
            DomHandler.findSingle(this.el.nativeElement, 'input[readonly]').focus();
    }
    focus() {
        this.applyFocus();
    }
    bindDocumentClickListener() {
        if (!this.documentClickListener) {
            const documentTarget = this.el ? this.el.nativeElement.ownerDocument : 'document';
            this.documentClickListener = this.renderer.listen(documentTarget, 'click', (event) => {
                if (this.isOutsideClicked(event)) {
                    this.hide();
                    this.unbindDocumentClickListener();
                }
                this.cd.markForCheck();
            });
        }
    }
    unbindDocumentClickListener() {
        if (this.documentClickListener) {
            this.documentClickListener();
            this.documentClickListener = null;
        }
    }
    bindDocumentResizeListener() {
        this.documentResizeListener = this.onWindowResize.bind(this);
        window.addEventListener('resize', this.documentResizeListener);
    }
    unbindDocumentResizeListener() {
        if (this.documentResizeListener) {
            window.removeEventListener('resize', this.documentResizeListener);
            this.documentResizeListener = null;
        }
    }
    onWindowResize() {
        if (this.overlayVisible && !DomHandler.isTouchDevice()) {
            this.hide();
        }
    }
    bindScrollListener() {
        if (!this.scrollHandler) {
            this.scrollHandler = new ConnectedOverlayScrollHandler(this.containerViewChild.nativeElement, (event) => {
                if (this.overlayVisible) {
                    this.hide();
                }
            });
        }
        this.scrollHandler.bindScrollListener();
    }
    unbindScrollListener() {
        if (this.scrollHandler) {
            this.scrollHandler.unbindScrollListener();
        }
    }
    clear(event) {
        this.value = null;
        this.onModelChange(this.value);
        this.onChange.emit({
            originalEvent: event,
            value: this.value
        });
        this.updateSelectedOption(this.value);
        this.updateEditableLabel();
        this.onClear.emit(event);
    }
    onOverlayHide() {
        this.unbindDocumentClickListener();
        this.unbindDocumentResizeListener();
        this.unbindScrollListener();
        this.overlay = null;
        this.itemsWrapper = null;
        this.onModelTouched();
    }
    ngOnDestroy() {
        if (this.scrollHandler) {
            this.scrollHandler.destroy();
            this.scrollHandler = null;
        }
        if (this.overlay) {
            ZIndexUtils.clear(this.overlay);
        }
        this.restoreOverlayAppend();
        this.onOverlayHide();
    }
}
Dropdown.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: Dropdown, deps: [{ token: i0.ElementRef }, { token: i0.Renderer2 }, { token: i0.ChangeDetectorRef }, { token: i0.NgZone }, { token: i3.FilterService }, { token: i3.PrimeNGConfig }, { token: i3.OverlayService }], target: i0.ɵɵFactoryTarget.Component });
Dropdown.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "13.0.0", type: Dropdown, selector: "p-dropdown", inputs: { scrollHeight: "scrollHeight", filter: "filter", name: "name", style: "style", panelStyle: "panelStyle", styleClass: "styleClass", panelStyleClass: "panelStyleClass", readonly: "readonly", required: "required", editable: "editable", appendTo: "appendTo", tabindex: "tabindex", placeholder: "placeholder", filterPlaceholder: "filterPlaceholder", filterLocale: "filterLocale", inputId: "inputId", selectId: "selectId", dataKey: "dataKey", filterBy: "filterBy", autofocus: "autofocus", resetFilterOnHide: "resetFilterOnHide", dropdownIcon: "dropdownIcon", optionLabel: "optionLabel", optionValue: "optionValue", optionDisabled: "optionDisabled", optionGroupLabel: "optionGroupLabel", optionGroupChildren: "optionGroupChildren", autoDisplayFirst: "autoDisplayFirst", group: "group", showClear: "showClear", emptyFilterMessage: "emptyFilterMessage", emptyMessage: "emptyMessage", virtualScroll: "virtualScroll", itemSize: "itemSize", autoZIndex: "autoZIndex", baseZIndex: "baseZIndex", showTransitionOptions: "showTransitionOptions", hideTransitionOptions: "hideTransitionOptions", ariaFilterLabel: "ariaFilterLabel", ariaLabelledBy: "ariaLabelledBy", filterMatchMode: "filterMatchMode", maxlength: "maxlength", tooltip: "tooltip", tooltipPosition: "tooltipPosition", tooltipPositionStyle: "tooltipPositionStyle", tooltipStyleClass: "tooltipStyleClass", autofocusFilter: "autofocusFilter", disabled: "disabled", options: "options", filterValue: "filterValue" }, outputs: { onChange: "onChange", onFilter: "onFilter", onFocus: "onFocus", onBlur: "onBlur", onClick: "onClick", onShow: "onShow", onHide: "onHide", onClear: "onClear" }, host: { properties: { "class.p-inputwrapper-filled": "filled", "class.p-inputwrapper-focus": "focused || overlayVisible" }, classAttribute: "p-element p-inputwrapper" }, providers: [DROPDOWN_VALUE_ACCESSOR], queries: [{ propertyName: "templates", predicate: PrimeTemplate }], viewQueries: [{ propertyName: "containerViewChild", first: true, predicate: ["container"], descendants: true }, { propertyName: "filterViewChild", first: true, predicate: ["filter"], descendants: true }, { propertyName: "accessibleViewChild", first: true, predicate: ["in"], descendants: true }, { propertyName: "viewPort", first: true, predicate: CdkVirtualScrollViewport, descendants: true }, { propertyName: "editableInputViewChild", first: true, predicate: ["editableInput"], descendants: true }], ngImport: i0, template: `
         <div #container [ngClass]="{'p-dropdown p-component':true,
            'p-disabled':disabled, 'p-dropdown-open':overlayVisible, 'p-focus':focused, 'p-dropdown-clearable': showClear && !disabled}"
            (click)="onMouseclick($event)" [ngStyle]="style" [class]="styleClass">
            <div class="p-hidden-accessible">
                <input #in [attr.id]="inputId" type="text" readonly (focus)="onInputFocus($event)" aria-haspopup="listbox" [attr.placeholder]="placeholder"
                    aria-haspopup="listbox" [attr.aria-expanded]="overlayVisible" [attr.aria-labelledby]="ariaLabelledBy" (blur)="onInputBlur($event)" (keydown)="onKeydown($event, true)"
                    [disabled]="disabled" [attr.tabindex]="tabindex" [attr.autofocus]="autofocus" [attr.aria-activedescendant]="overlayVisible ? 'p-highlighted-option' : labelId" role="listbox">
            </div>
            <span [attr.id]="labelId" [ngClass]="{'p-dropdown-label p-inputtext':true,'p-dropdown-label-empty':(label == null || label.length === 0)}" *ngIf="!editable && (label != null)" [pTooltip]="tooltip" [tooltipPosition]="tooltipPosition" [positionStyle]="tooltipPositionStyle" [tooltipStyleClass]="tooltipStyleClass">
                <ng-container *ngIf="!selectedItemTemplate">{{label||'empty'}}</ng-container>
                <ng-container *ngTemplateOutlet="selectedItemTemplate; context: {$implicit: selectedOption}"></ng-container>
            </span>
            <span [ngClass]="{'p-dropdown-label p-inputtext p-placeholder':true,'p-dropdown-label-empty': (placeholder == null || placeholder.length === 0)}" *ngIf="!editable && (label == null)">{{placeholder||'empty'}}</span>
            <input #editableInput type="text" [attr.maxlength]="maxlength" class="p-dropdown-label p-inputtext" *ngIf="editable" [disabled]="disabled" [attr.placeholder]="placeholder"
                aria-haspopup="listbox" [attr.aria-expanded]="overlayVisible" (click)="onEditableInputClick()" (input)="onEditableInputChange($event)" (focus)="onEditableInputFocus($event)" (blur)="onInputBlur($event)">
            <i class="p-dropdown-clear-icon pi pi-times" (click)="clear($event)" *ngIf="value != null && showClear && !disabled"></i>
            <div class="p-dropdown-trigger" role="button" aria-haspopup="listbox" [attr.aria-expanded]="overlayVisible">
                <span class="p-dropdown-trigger-icon" [ngClass]="dropdownIcon"></span>
            </div>
            <div *ngIf="overlayVisible" [ngClass]="'p-dropdown-panel p-component'" (click)="onOverlayClick($event)" [@overlayAnimation]="{value: 'visible', params: {showTransitionParams: showTransitionOptions, hideTransitionParams: hideTransitionOptions}}" (@overlayAnimation.start)="onOverlayAnimationStart($event)" (@overlayAnimation.start)="onOverlayAnimationEnd($event)"onOverlayAnimationEnd [ngStyle]="panelStyle" [class]="panelStyleClass">
                <ng-container *ngTemplateOutlet="headerTemplate"></ng-container>
                <div class="p-dropdown-header" *ngIf="filter" >
                    <div class="p-dropdown-filter-container" (click)="$event.stopPropagation()">
                        <input #filter type="text" autocomplete="off" [value]="filterValue||''" class="p-dropdown-filter p-inputtext p-component" [attr.placeholder]="filterPlaceholder"
                        (keydown.enter)="$event.preventDefault()" (keydown)="onKeydown($event, false)" (input)="onFilterInputChange($event)" [attr.aria-label]="ariaFilterLabel" [attr.aria-activedescendant]="overlayVisible ? 'p-highlighted-option' : labelId">
                        <span class="p-dropdown-filter-icon pi pi-search"></span>
                    </div>
                </div>
                <div class="p-dropdown-items-wrapper" [style.max-height]="virtualScroll ? 'auto' : (scrollHeight||'auto')">
                    <ul [attr.id]="listId" class="p-dropdown-items" [ngClass]="{'p-dropdown-virtualscroll': virtualScroll}" role="listbox">
                        <ng-container *ngIf="group">
                            <ng-template ngFor let-optgroup [ngForOf]="optionsToDisplay">
                                <li class="p-dropdown-item-group">
                                    <span *ngIf="!groupTemplate">{{getOptionGroupLabel(optgroup)||'empty'}}</span>
                                    <ng-container *ngTemplateOutlet="groupTemplate; context: {$implicit: optgroup}"></ng-container>
                                </li>
                                <ng-container *ngTemplateOutlet="itemslist; context: {$implicit: getOptionGroupChildren(optgroup), selectedOption: selectedOption}"></ng-container>
                            </ng-template>
                        </ng-container>
                        <ng-container *ngIf="!group">
                            <ng-container *ngTemplateOutlet="itemslist; context: {$implicit: optionsToDisplay, selectedOption: selectedOption}"></ng-container>
                        </ng-container>
                        <ng-template #itemslist let-options let-selectedOption="selectedOption">
                            <ng-container *ngIf="!virtualScroll; else virtualScrollList">
                                <ng-template ngFor let-option let-i="index" [ngForOf]="options">
                                    <p-dropdownItem [option]="option" [selected]="selectedOption == option" [label]="getOptionLabel(option)" [disabled]="isOptionDisabled(option)"
                                                    (onClick)="onItemClick($event)"
                                                    [template]="itemTemplate"></p-dropdownItem>
                                </ng-template>
                            </ng-container>
                            <ng-template #virtualScrollList>
                                <cdk-virtual-scroll-viewport (scrolledIndexChange)="scrollToSelectedVirtualScrollElement()" #viewport [ngStyle]="{'height': scrollHeight}" [itemSize]="itemSize" *ngIf="virtualScroll && optionsToDisplay && optionsToDisplay.length">
                                    <ng-container *cdkVirtualFor="let option of options; let i = index; let c = count; let f = first; let l = last; let e = even; let o = odd">
                                        <p-dropdownItem [option]="option" [selected]="selectedOption == option" [label]="getOptionLabel(option)" [disabled]="isOptionDisabled(option)"
                                                                   (onClick)="onItemClick($event)"
                                                                   [template]="itemTemplate"></p-dropdownItem>
                                    </ng-container>
                                </cdk-virtual-scroll-viewport>
                            </ng-template>
                        </ng-template>
                        <li *ngIf="filterValue && isEmpty()" class="p-dropdown-empty-message">
                            <ng-container *ngIf="!emptyFilterTemplate && !emptyTemplate; else emptyFilter">
                                {{emptyFilterMessageLabel}}
                            </ng-container>
                            <ng-container #emptyFilter *ngTemplateOutlet="emptyFilterTemplate || emptyTemplate"></ng-container>
                        </li>
                        <li *ngIf="!filterValue && isEmpty()" class="p-dropdown-empty-message">
                            <ng-container *ngIf="!emptyTemplate; else empty">
                                {{emptyMessageLabel}}
                            </ng-container>
                            <ng-container #empty *ngTemplateOutlet="emptyTemplate"></ng-container>
                        </li>
                    </ul>
                </div>
                <ng-container *ngTemplateOutlet="footerTemplate"></ng-container>
            </div>
        </div>
    `, isInline: true, styles: [".p-dropdown{display:inline-flex;cursor:pointer;position:relative;-webkit-user-select:none;-ms-user-select:none;user-select:none}.p-dropdown-clear-icon{position:absolute;top:50%;margin-top:-.5rem}.p-dropdown-trigger{display:flex;align-items:center;justify-content:center;flex-shrink:0}.p-dropdown-label{display:block;white-space:nowrap;overflow:hidden;flex:1 1 auto;width:1%;text-overflow:ellipsis;cursor:pointer}.p-dropdown-label-empty{overflow:hidden;visibility:hidden}input.p-dropdown-label{cursor:default}.p-dropdown .p-dropdown-panel{min-width:100%}.p-dropdown-panel{position:absolute;top:0;left:0}.p-dropdown-items-wrapper{overflow:auto}.p-dropdown-item{cursor:pointer;font-weight:normal;white-space:nowrap;position:relative;overflow:hidden}.p-dropdown-items{margin:0;padding:0;list-style-type:none}.p-dropdown-filter{width:100%}.p-dropdown-filter-container{position:relative}.p-dropdown-filter-icon{position:absolute;top:50%;margin-top:-.5rem}.p-fluid .p-dropdown{display:flex}.p-fluid .p-dropdown .p-dropdown-label{width:1%}\n"], components: [{ type: DropdownItem, selector: "p-dropdownItem", inputs: ["option", "selected", "label", "disabled", "visible", "itemSize", "template"], outputs: ["onClick"] }, { type: i4.CdkVirtualScrollViewport, selector: "cdk-virtual-scroll-viewport", inputs: ["orientation", "appendOnly"], outputs: ["scrolledIndexChange"] }], directives: [{ type: i2.NgClass, selector: "[ngClass]", inputs: ["class", "ngClass"] }, { type: i2.NgStyle, selector: "[ngStyle]", inputs: ["ngStyle"] }, { type: i2.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { type: i5.Tooltip, selector: "[pTooltip]", inputs: ["tooltipPosition", "tooltipEvent", "appendTo", "positionStyle", "tooltipStyleClass", "tooltipZIndex", "escape", "showDelay", "hideDelay", "life", "positionTop", "positionLeft", "pTooltip", "tooltipDisabled", "tooltipOptions"] }, { type: i2.NgTemplateOutlet, selector: "[ngTemplateOutlet]", inputs: ["ngTemplateOutletContext", "ngTemplateOutlet"] }, { type: i2.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { type: i4.CdkFixedSizeVirtualScroll, selector: "cdk-virtual-scroll-viewport[itemSize]", inputs: ["itemSize", "minBufferPx", "maxBufferPx"] }, { type: i4.CdkVirtualForOf, selector: "[cdkVirtualFor][cdkVirtualForOf]", inputs: ["cdkVirtualForOf", "cdkVirtualForTrackBy", "cdkVirtualForTemplate", "cdkVirtualForTemplateCacheSize"] }], animations: [
        trigger('overlayAnimation', [
            transition(':enter', [
                style({ opacity: 0, transform: 'scaleY(0.8)' }),
                animate('{{showTransitionParams}}')
            ]),
            transition(':leave', [
                animate('{{hideTransitionParams}}', style({ opacity: 0 }))
            ])
        ])
    ], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: Dropdown, decorators: [{
            type: Component,
            args: [{ selector: 'p-dropdown', template: `
         <div #container [ngClass]="{'p-dropdown p-component':true,
            'p-disabled':disabled, 'p-dropdown-open':overlayVisible, 'p-focus':focused, 'p-dropdown-clearable': showClear && !disabled}"
            (click)="onMouseclick($event)" [ngStyle]="style" [class]="styleClass">
            <div class="p-hidden-accessible">
                <input #in [attr.id]="inputId" type="text" readonly (focus)="onInputFocus($event)" aria-haspopup="listbox" [attr.placeholder]="placeholder"
                    aria-haspopup="listbox" [attr.aria-expanded]="overlayVisible" [attr.aria-labelledby]="ariaLabelledBy" (blur)="onInputBlur($event)" (keydown)="onKeydown($event, true)"
                    [disabled]="disabled" [attr.tabindex]="tabindex" [attr.autofocus]="autofocus" [attr.aria-activedescendant]="overlayVisible ? 'p-highlighted-option' : labelId" role="listbox">
            </div>
            <span [attr.id]="labelId" [ngClass]="{'p-dropdown-label p-inputtext':true,'p-dropdown-label-empty':(label == null || label.length === 0)}" *ngIf="!editable && (label != null)" [pTooltip]="tooltip" [tooltipPosition]="tooltipPosition" [positionStyle]="tooltipPositionStyle" [tooltipStyleClass]="tooltipStyleClass">
                <ng-container *ngIf="!selectedItemTemplate">{{label||'empty'}}</ng-container>
                <ng-container *ngTemplateOutlet="selectedItemTemplate; context: {$implicit: selectedOption}"></ng-container>
            </span>
            <span [ngClass]="{'p-dropdown-label p-inputtext p-placeholder':true,'p-dropdown-label-empty': (placeholder == null || placeholder.length === 0)}" *ngIf="!editable && (label == null)">{{placeholder||'empty'}}</span>
            <input #editableInput type="text" [attr.maxlength]="maxlength" class="p-dropdown-label p-inputtext" *ngIf="editable" [disabled]="disabled" [attr.placeholder]="placeholder"
                aria-haspopup="listbox" [attr.aria-expanded]="overlayVisible" (click)="onEditableInputClick()" (input)="onEditableInputChange($event)" (focus)="onEditableInputFocus($event)" (blur)="onInputBlur($event)">
            <i class="p-dropdown-clear-icon pi pi-times" (click)="clear($event)" *ngIf="value != null && showClear && !disabled"></i>
            <div class="p-dropdown-trigger" role="button" aria-haspopup="listbox" [attr.aria-expanded]="overlayVisible">
                <span class="p-dropdown-trigger-icon" [ngClass]="dropdownIcon"></span>
            </div>
            <div *ngIf="overlayVisible" [ngClass]="'p-dropdown-panel p-component'" (click)="onOverlayClick($event)" [@overlayAnimation]="{value: 'visible', params: {showTransitionParams: showTransitionOptions, hideTransitionParams: hideTransitionOptions}}" (@overlayAnimation.start)="onOverlayAnimationStart($event)" (@overlayAnimation.start)="onOverlayAnimationEnd($event)"onOverlayAnimationEnd [ngStyle]="panelStyle" [class]="panelStyleClass">
                <ng-container *ngTemplateOutlet="headerTemplate"></ng-container>
                <div class="p-dropdown-header" *ngIf="filter" >
                    <div class="p-dropdown-filter-container" (click)="$event.stopPropagation()">
                        <input #filter type="text" autocomplete="off" [value]="filterValue||''" class="p-dropdown-filter p-inputtext p-component" [attr.placeholder]="filterPlaceholder"
                        (keydown.enter)="$event.preventDefault()" (keydown)="onKeydown($event, false)" (input)="onFilterInputChange($event)" [attr.aria-label]="ariaFilterLabel" [attr.aria-activedescendant]="overlayVisible ? 'p-highlighted-option' : labelId">
                        <span class="p-dropdown-filter-icon pi pi-search"></span>
                    </div>
                </div>
                <div class="p-dropdown-items-wrapper" [style.max-height]="virtualScroll ? 'auto' : (scrollHeight||'auto')">
                    <ul [attr.id]="listId" class="p-dropdown-items" [ngClass]="{'p-dropdown-virtualscroll': virtualScroll}" role="listbox">
                        <ng-container *ngIf="group">
                            <ng-template ngFor let-optgroup [ngForOf]="optionsToDisplay">
                                <li class="p-dropdown-item-group">
                                    <span *ngIf="!groupTemplate">{{getOptionGroupLabel(optgroup)||'empty'}}</span>
                                    <ng-container *ngTemplateOutlet="groupTemplate; context: {$implicit: optgroup}"></ng-container>
                                </li>
                                <ng-container *ngTemplateOutlet="itemslist; context: {$implicit: getOptionGroupChildren(optgroup), selectedOption: selectedOption}"></ng-container>
                            </ng-template>
                        </ng-container>
                        <ng-container *ngIf="!group">
                            <ng-container *ngTemplateOutlet="itemslist; context: {$implicit: optionsToDisplay, selectedOption: selectedOption}"></ng-container>
                        </ng-container>
                        <ng-template #itemslist let-options let-selectedOption="selectedOption">
                            <ng-container *ngIf="!virtualScroll; else virtualScrollList">
                                <ng-template ngFor let-option let-i="index" [ngForOf]="options">
                                    <p-dropdownItem [option]="option" [selected]="selectedOption == option" [label]="getOptionLabel(option)" [disabled]="isOptionDisabled(option)"
                                                    (onClick)="onItemClick($event)"
                                                    [template]="itemTemplate"></p-dropdownItem>
                                </ng-template>
                            </ng-container>
                            <ng-template #virtualScrollList>
                                <cdk-virtual-scroll-viewport (scrolledIndexChange)="scrollToSelectedVirtualScrollElement()" #viewport [ngStyle]="{'height': scrollHeight}" [itemSize]="itemSize" *ngIf="virtualScroll && optionsToDisplay && optionsToDisplay.length">
                                    <ng-container *cdkVirtualFor="let option of options; let i = index; let c = count; let f = first; let l = last; let e = even; let o = odd">
                                        <p-dropdownItem [option]="option" [selected]="selectedOption == option" [label]="getOptionLabel(option)" [disabled]="isOptionDisabled(option)"
                                                                   (onClick)="onItemClick($event)"
                                                                   [template]="itemTemplate"></p-dropdownItem>
                                    </ng-container>
                                </cdk-virtual-scroll-viewport>
                            </ng-template>
                        </ng-template>
                        <li *ngIf="filterValue && isEmpty()" class="p-dropdown-empty-message">
                            <ng-container *ngIf="!emptyFilterTemplate && !emptyTemplate; else emptyFilter">
                                {{emptyFilterMessageLabel}}
                            </ng-container>
                            <ng-container #emptyFilter *ngTemplateOutlet="emptyFilterTemplate || emptyTemplate"></ng-container>
                        </li>
                        <li *ngIf="!filterValue && isEmpty()" class="p-dropdown-empty-message">
                            <ng-container *ngIf="!emptyTemplate; else empty">
                                {{emptyMessageLabel}}
                            </ng-container>
                            <ng-container #empty *ngTemplateOutlet="emptyTemplate"></ng-container>
                        </li>
                    </ul>
                </div>
                <ng-container *ngTemplateOutlet="footerTemplate"></ng-container>
            </div>
        </div>
    `, animations: [
                        trigger('overlayAnimation', [
                            transition(':enter', [
                                style({ opacity: 0, transform: 'scaleY(0.8)' }),
                                animate('{{showTransitionParams}}')
                            ]),
                            transition(':leave', [
                                animate('{{hideTransitionParams}}', style({ opacity: 0 }))
                            ])
                        ])
                    ], host: {
                        'class': 'p-element p-inputwrapper',
                        '[class.p-inputwrapper-filled]': 'filled',
                        '[class.p-inputwrapper-focus]': 'focused || overlayVisible'
                    }, providers: [DROPDOWN_VALUE_ACCESSOR], changeDetection: ChangeDetectionStrategy.OnPush, encapsulation: ViewEncapsulation.None, styles: [".p-dropdown{display:inline-flex;cursor:pointer;position:relative;-webkit-user-select:none;-ms-user-select:none;user-select:none}.p-dropdown-clear-icon{position:absolute;top:50%;margin-top:-.5rem}.p-dropdown-trigger{display:flex;align-items:center;justify-content:center;flex-shrink:0}.p-dropdown-label{display:block;white-space:nowrap;overflow:hidden;flex:1 1 auto;width:1%;text-overflow:ellipsis;cursor:pointer}.p-dropdown-label-empty{overflow:hidden;visibility:hidden}input.p-dropdown-label{cursor:default}.p-dropdown .p-dropdown-panel{min-width:100%}.p-dropdown-panel{position:absolute;top:0;left:0}.p-dropdown-items-wrapper{overflow:auto}.p-dropdown-item{cursor:pointer;font-weight:normal;white-space:nowrap;position:relative;overflow:hidden}.p-dropdown-items{margin:0;padding:0;list-style-type:none}.p-dropdown-filter{width:100%}.p-dropdown-filter-container{position:relative}.p-dropdown-filter-icon{position:absolute;top:50%;margin-top:-.5rem}.p-fluid .p-dropdown{display:flex}.p-fluid .p-dropdown .p-dropdown-label{width:1%}\n"] }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.Renderer2 }, { type: i0.ChangeDetectorRef }, { type: i0.NgZone }, { type: i3.FilterService }, { type: i3.PrimeNGConfig }, { type: i3.OverlayService }]; }, propDecorators: { scrollHeight: [{
                type: Input
            }], filter: [{
                type: Input
            }], name: [{
                type: Input
            }], style: [{
                type: Input
            }], panelStyle: [{
                type: Input
            }], styleClass: [{
                type: Input
            }], panelStyleClass: [{
                type: Input
            }], readonly: [{
                type: Input
            }], required: [{
                type: Input
            }], editable: [{
                type: Input
            }], appendTo: [{
                type: Input
            }], tabindex: [{
                type: Input
            }], placeholder: [{
                type: Input
            }], filterPlaceholder: [{
                type: Input
            }], filterLocale: [{
                type: Input
            }], inputId: [{
                type: Input
            }], selectId: [{
                type: Input
            }], dataKey: [{
                type: Input
            }], filterBy: [{
                type: Input
            }], autofocus: [{
                type: Input
            }], resetFilterOnHide: [{
                type: Input
            }], dropdownIcon: [{
                type: Input
            }], optionLabel: [{
                type: Input
            }], optionValue: [{
                type: Input
            }], optionDisabled: [{
                type: Input
            }], optionGroupLabel: [{
                type: Input
            }], optionGroupChildren: [{
                type: Input
            }], autoDisplayFirst: [{
                type: Input
            }], group: [{
                type: Input
            }], showClear: [{
                type: Input
            }], emptyFilterMessage: [{
                type: Input
            }], emptyMessage: [{
                type: Input
            }], virtualScroll: [{
                type: Input
            }], itemSize: [{
                type: Input
            }], autoZIndex: [{
                type: Input
            }], baseZIndex: [{
                type: Input
            }], showTransitionOptions: [{
                type: Input
            }], hideTransitionOptions: [{
                type: Input
            }], ariaFilterLabel: [{
                type: Input
            }], ariaLabelledBy: [{
                type: Input
            }], filterMatchMode: [{
                type: Input
            }], maxlength: [{
                type: Input
            }], tooltip: [{
                type: Input
            }], tooltipPosition: [{
                type: Input
            }], tooltipPositionStyle: [{
                type: Input
            }], tooltipStyleClass: [{
                type: Input
            }], autofocusFilter: [{
                type: Input
            }], onChange: [{
                type: Output
            }], onFilter: [{
                type: Output
            }], onFocus: [{
                type: Output
            }], onBlur: [{
                type: Output
            }], onClick: [{
                type: Output
            }], onShow: [{
                type: Output
            }], onHide: [{
                type: Output
            }], onClear: [{
                type: Output
            }], containerViewChild: [{
                type: ViewChild,
                args: ['container']
            }], filterViewChild: [{
                type: ViewChild,
                args: ['filter']
            }], accessibleViewChild: [{
                type: ViewChild,
                args: ['in']
            }], viewPort: [{
                type: ViewChild,
                args: [CdkVirtualScrollViewport]
            }], editableInputViewChild: [{
                type: ViewChild,
                args: ['editableInput']
            }], templates: [{
                type: ContentChildren,
                args: [PrimeTemplate]
            }], disabled: [{
                type: Input
            }], options: [{
                type: Input
            }], filterValue: [{
                type: Input
            }] } });
class DropdownModule {
}
DropdownModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: DropdownModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
DropdownModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: DropdownModule, declarations: [Dropdown, DropdownItem], imports: [CommonModule, SharedModule, ScrollingModule, TooltipModule, RippleModule], exports: [Dropdown, SharedModule, ScrollingModule] });
DropdownModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: DropdownModule, imports: [[CommonModule, SharedModule, ScrollingModule, TooltipModule, RippleModule], SharedModule, ScrollingModule] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.0.0", ngImport: i0, type: DropdownModule, decorators: [{
            type: NgModule,
            args: [{
                    imports: [CommonModule, SharedModule, ScrollingModule, TooltipModule, RippleModule],
                    exports: [Dropdown, SharedModule, ScrollingModule],
                    declarations: [Dropdown, DropdownItem]
                }]
        }] });

/**
 * Generated bundle index. Do not edit.
 */

export { DROPDOWN_VALUE_ACCESSOR, Dropdown, DropdownItem, DropdownModule };