import * as _bootkit_ng1_localization from '@bootkit/ng1/localization';
import * as _bootkit_ng1_common from '@bootkit/ng1/common';
import * as _angular_core from '@angular/core';
import { ElementRef, TemplateRef, EventEmitter } from '@angular/core';
import { DataSource, DataSourceLike } from '@bootkit/ng1/data';
import { ControlValueAccessor } from '@angular/forms';
import { ScrollStrategy, ConnectedPosition } from '@angular/cdk/overlay';
import { ListItemSelectEvent } from '@bootkit/ng1/components/list';

/**
 * Select component that allows users to choose an option from a dropdown list.
 */
declare class SelectComponent implements ControlValueAccessor {
    private _viewpoerRulerSubscription?;
    private readonly _injector;
    private _filterElementRef?;
    private _listComponent?;
    private _changeCallback;
    private _touchCallback;
    protected readonly _sourceItems: _angular_core.WritableSignal<any[] | undefined>;
    protected readonly _selectedItems: Set<any>;
    protected readonly _isDisabled: _angular_core.WritableSignal<boolean>;
    protected _scrollStrategy: ScrollStrategy;
    protected _positions: ConnectedPosition[];
    private readonly _overlay;
    protected readonly _elementRef: ElementRef<any>;
    protected readonly _filterValue: _angular_core.WritableSignal<string>;
    private readonly _renderer;
    private readonly _viewportRuler;
    private readonly _changeDetectorRef;
    private readonly _value;
    /**
     * Template for rendering each item in the select component.
     */
    itemTemplate?: TemplateRef<any>;
    /**
     * The data source for the select component.
     * This can be an array of data, a function that returns an observable of data,
     * or an instance of DataSource.
     */
    readonly source: _angular_core.InputSignalWithTransform<DataSource<any>, DataSourceLike<any>>;
    /**
     * Indicates whether multi selection is enabled or not.
     */
    readonly multiple: _angular_core.InputSignalWithTransform<boolean, unknown>;
    /**
     * Indicates whether to show selection indicator (checkbox/radio) next to each item.
     * Default is false.
     */
    readonly showSelectionIndicator: _angular_core.InputSignalWithTransform<boolean, unknown>;
    /**
     * Indicates whether the dropdown is open or closed.
     */
    readonly open: _angular_core.ModelSignal<boolean>;
    /**
    * A comparer to compare items for selection.
    */
    readonly compareBy: _angular_core.InputSignalWithTransform<_bootkit_ng1_common.EqualityComparer, _bootkit_ng1_common.EqualityComparerLike>;
    /**
     * A fromatter to convert each item to a string for display.
     */
    readonly formatBy: _angular_core.InputSignalWithTransform<_bootkit_ng1_localization.ObjectFormatter, _bootkit_ng1_localization.ObjectFormatterLike>;
    /**
     * Custom value writer to extract the value of any object while writing values.
     */
    readonly writeBy: _angular_core.InputSignalWithTransform<_bootkit_ng1_common.ValueWriter, _bootkit_ng1_common.ValueWriterLike>;
    /**
     * Indicates whether the select component is filterable.
     */
    readonly filterable: _angular_core.InputSignalWithTransform<boolean, unknown>;
    /**
     * Custom filter function to filter items based on a filter value.
     * Default checks if the item contains the filter value (case-insensitive).
     */
    readonly filterBy: _angular_core.InputSignalWithTransform<_bootkit_ng1_common.FilterPredicate, _bootkit_ng1_common.FilterPredicateLike>;
    /**
     * Placeholder text for the filter input field.
     */
    readonly filterPlaceholder: _angular_core.InputSignal<string | undefined>;
    /**
     * CSS class or classes to apply to the items.
     */
    readonly itemClass: _angular_core.InputSignalWithTransform<_bootkit_ng1_common.CssClassGetter | undefined, _bootkit_ng1_common.CssClassLike>;
    /**
     * A function that generates unique ids for each item in the list.
     * If set to a function, it will be called with the item as an argument to generate the id.
     * If set to undefined, no ids will be generated for the items.
     * @default undefined
     */
    readonly idGenerator: _angular_core.InputSignalWithTransform<_bootkit_ng1_common.IdGenerator | undefined, _bootkit_ng1_common.IdGeneratorLike>;
    /**
     * Event emitted when the selected value changes.
     */
    readonly itemSelect: EventEmitter<ItemSelectEvent>;
    constructor();
    /**
     * Indicates whether the given value is selected.
     * @param item
     * @returns
     */
    isSelected(value: any): boolean;
    /**
     * Selects the given value.
     * @param item
     */
    select(value: any): void;
    /**
     * Deselects the given value.
     * @param item
     */
    deselect(value: any): void;
    /**
     * Toggles the selection state of the given value.
     * @param item
    */
    toggle(value: any): void;
    writeValue(obj: any): void;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
    setDisabledState?(isDisabled: boolean): void;
    private _findAndSelectItems;
    private _updateValue;
    protected _onOverlayAttach(): void;
    protected _onOverlayDetach(): void;
    protected _onListSelectionChange(e: ListItemSelectEvent): void;
    protected _filterPredicate: _angular_core.Signal<(item: any) => boolean>;
    protected _onFilterKeydown(e: KeyboardEvent): void;
    private _listenToResizeEvents;
    private _unlistenFromResizeEvents;
    protected _onHostKeydown(e: KeyboardEvent): void;
    protected _onHostClick(e: MouseEvent): void;
    static ɵfac: _angular_core.ɵɵFactoryDeclaration<SelectComponent, never>;
    static ɵcmp: _angular_core.ɵɵComponentDeclaration<SelectComponent, "ng1-select", ["ng1Select"], { "source": { "alias": "source"; "required": true; "isSignal": true; }; "multiple": { "alias": "multiple"; "required": false; "isSignal": true; }; "showSelectionIndicator": { "alias": "showSelectionIndicator"; "required": false; "isSignal": true; }; "open": { "alias": "open"; "required": false; "isSignal": true; }; "compareBy": { "alias": "compareBy"; "required": false; "isSignal": true; }; "formatBy": { "alias": "formatBy"; "required": false; "isSignal": true; }; "writeBy": { "alias": "writeBy"; "required": false; "isSignal": true; }; "filterable": { "alias": "filterable"; "required": false; "isSignal": true; }; "filterBy": { "alias": "filterBy"; "required": false; "isSignal": true; }; "filterPlaceholder": { "alias": "filterPlaceholder"; "required": false; "isSignal": true; }; "itemClass": { "alias": "itemClass"; "required": false; "isSignal": true; }; "idGenerator": { "alias": "idGenerator"; "required": false; "isSignal": true; }; }, { "open": "openChange"; "itemSelect": "itemSelect"; }, ["itemTemplate"], never, true, never>;
}
/**
 * Event emitted when the selection state of the select component changes by user interaction.
 */
interface ItemSelectEvent {
    /**
     * The value of the item that was selected or deselected.
     */
    value: any;
    /**
     * The select component that emitted the event.
     */
    readonly select: SelectComponent;
}

/**
 * Select module.
 */
declare class SelectModule {
    static ɵfac: _angular_core.ɵɵFactoryDeclaration<SelectModule, never>;
    static ɵmod: _angular_core.ɵɵNgModuleDeclaration<SelectModule, never, [typeof SelectComponent], [typeof SelectComponent]>;
    static ɵinj: _angular_core.ɵɵInjectorDeclaration<SelectModule>;
}

export { SelectComponent, SelectModule };
export type { ItemSelectEvent };