import { Observable } from "rxjs";
import { OnInit, OnChanges, ElementRef, ChangeDetectorRef, NgZone, TemplateRef, EventEmitter } from "@angular/core";
import { MatOptgroup, MatPseudoCheckboxState } from "@angular/material/core";
import { AppMatSelect } from "@angular/material/select";
import { FormControl } from "@angular/forms";
import { MatMenuTrigger } from "@angular/material/menu";
import { CdkVirtualScrollViewport } from "@angular/cdk/scrolling";
import { Field } from "angular-extensions/models";
import { SimpleChanges } from "angular-extensions/core";
import { ActionableControl, ControlBase } from "angular-extensions/controls/base-control";
import * as i0 from "@angular/core";
interface SelectionGroup<TKey, T> extends Group<TKey, T> {
    state?: MatPseudoCheckboxState;
}
export declare class SelectControlComponent<TValue, TOption, TOptionGroup, TFormattedValue, TControlValue> extends ControlBase<TValue, TOption, TOptionGroup, TFormattedValue, TControlValue> implements OnInit, OnChanges, ActionableControl {
    private changeDetectorRef;
    private ngZone;
    dropdownClass: string;
    multiple: boolean;
    searchable: boolean;
    clearable: boolean;
    virtualization: boolean;
    tooltipDisabled: boolean;
    optionTooltipDisabled: boolean;
    filter: string;
    actionButtonVisible: boolean;
    actionButtonIcon?: string;
    actionButtonTooltip?: string;
    optionHeight: number;
    visibleOptionsCount: number;
    hideTriggerLabel?: boolean;
    alwaysShowTriggerLabel?: boolean;
    actionButton: EventEmitter<Field<TValue, TOption, TOptionGroup, TFormattedValue, TControlValue>>;
    menuClosed: EventEmitter<void>;
    select: AppMatSelect;
    scrollViewport?: CdkVirtualScrollViewport;
    headerTemplate: TemplateRef<any>;
    optionTemplate: TemplateRef<{
        $implicit: string;
        option: TOption;
    }>;
    triggerTemplate: TemplateRef<{
        $implicit: string;
        option: TOption | TOption[];
    }>;
    searchActionTemplate: TemplateRef<any>;
    dropdownHeight: number;
    isSelectAllChecked: boolean;
    get viewportHeight(): number;
    /**
     * Selected option(s) based on option comparer,
     * see {@link Field.optionId} for details
     */
    selectedOption: TOption | TOption[];
    groupStates: Map<TOptionGroup, SelectionGroup<TOptionGroup, TOption>>;
    /**
     * Trigger label (text shown when option(s) selected),
     * based on option label, see {@link Field.optionLabel} for details
     */
    triggerLabel: string;
    tooltip: string;
    filterControl: FormControl<string>;
    private selection;
    constructor(elementRef: ElementRef<HTMLElement>, changeDetectorRef: ChangeDetectorRef, ngZone: NgZone, matMenuTrigger: MatMenuTrigger);
    ngOnInit(): void;
    ngOnChanges(changes: SimpleChanges<SelectControlComponent<TValue, TOption, TOptionGroup, TFormattedValue, TControlValue>>): void;
    optionGroupTracker: (index: number, optionGroup: Group<TOptionGroup, TOption>) => TOptionGroup;
    optionTracker: (index: number, option: TOption) => string | number;
    optionFilter: (option: TOption) => boolean;
    optionComparer: (left?: TOption, right?: TOption) => boolean;
    showClearButton(): boolean;
    isSearchAvailable(): number | true | ((query: string) => Observable<TOption[]>);
    clear(): void;
    toggleSelectAll(shouldSelect: boolean): void;
    toggleOptionGroup(group: SelectionGroup<TOptionGroup, TOption>, optionGroup: MatOptgroup): void;
    /**
     * Store selected values in separate model to avoid mutations when virtualization applies.
     * Extend changes propagation with values stored in custom selection model.
     * Listens to control value changes in order to update selection.
     */
    private addCustomSelectionModel;
    /**
     * Delegates "empty" state detection to custom selection model.
     * Updates select trigger label based on custom selection model.
     * If "hideTriggerLabel" set to true - trigger label will be ignored completely
     */
    private patchSelectTrigger;
    /**
     * Trigger "filter" pipe to refresh options since custom predicate might not be pure.
     * Recalculates virtualization viewport size.
     */
    private updateOptionsAndViewportOnMenuOpen;
    /**
     * Updates "select all" or "group" states on selection changes.
     */
    private updateSelectStatesOnOptionChanges;
    /**
     * Hooks up the <ngx-mat-select-search> MatOption and provides filtered field option
     */
    private addOptionsFilteringSupport;
    static ɵfac: i0.ɵɵFactoryDeclaration<SelectControlComponent<any, any, any, any, any>, [null, null, null, { optional: true; }]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<SelectControlComponent<any, any, any, any, any>, "select-control", never, { "dropdownClass": "dropdownClass"; "multiple": "multiple"; "searchable": "searchable"; "clearable": "clearable"; "virtualization": "virtualization"; "tooltipDisabled": "tooltipDisabled"; "optionTooltipDisabled": "optionTooltipDisabled"; "filter": "filter"; "actionButtonVisible": "actionButtonVisible"; "actionButtonIcon": "actionButtonIcon"; "actionButtonTooltip": "actionButtonTooltip"; "optionHeight": "optionHeight"; "visibleOptionsCount": "visibleOptionsCount"; "hideTriggerLabel": "hideTriggerLabel"; "alwaysShowTriggerLabel": "alwaysShowTriggerLabel"; }, { "actionButton": "actionButton"; "menuClosed": "menuClosed"; }, ["headerTemplate", "optionTemplate", "triggerTemplate", "searchActionTemplate"], never, false>;
}
export {};