import { ElementRef, Type, WritableSignal, Signal, OnDestroy, Injector } from '@angular/core';
import { MatDialog } from '@angular/material/dialog';
import { PermanentStorage } from '@anglr/common';
import { GridColumn, GridPlugin, MetadataGatherer, TableGridMetadata, GridPluginInstances } from '@anglr/grid';
import { Subscription } from 'rxjs';
import { DialogMetadataSelectorOptions, DialogMetadataSelector } from './dialogMetadataSelector.interface';
import * as i0 from "@angular/core";
/**
 * Storage state
 */
export interface StorageState {
    [id: string]: GridColumn;
}
/**
 * Component for rendering dialog metadata selector
 */
export declare class DialogMetadataSelectorComponent implements DialogMetadataSelector<TableGridMetadata<GridColumn>>, GridPlugin<DialogMetadataSelectorOptions>, OnDestroy {
    protected storage: PermanentStorage;
    protected dialog: MatDialog;
    /**
     * Instance of signal for obtaining metadata
     */
    protected metadataValue: Signal<TableGridMetadata<GridColumn> | undefined | null>;
    /**
     * Metadata for dialog component
     */
    protected metadataForDialogComponent: Signal<TableGridMetadata<GridColumn>>;
    /**
     * Options for grid plugin
     */
    protected optionsValue: WritableSignal<DialogMetadataSelectorOptions>;
    /**
     * Instance of injector used for DI
     */
    protected injector: Injector;
    /**
     * Subscription for metadata changes
     */
    protected metadataChangedSubscription: Subscription | undefined | null;
    /**
     * Indication whether gahterer has been initialized
     */
    protected gathererInitialized: boolean;
    /**
     * Instance of metadata gatherer, which is used for getting initial metadata
     */
    protected metadataGatherer: MetadataGatherer<TableGridMetadata<GridColumn>> | undefined | null;
    /**
     * All metadata that are available
     */
    protected allMetadata: WritableSignal<TableGridMetadata<GridColumn> | undefined | null>;
    /**
     * Array of visiblity flags for columns originaly obtained from metadata selector
     */
    protected originalColumnsVisibility: boolean[];
    /**
     * Component that is used for handling metadata selection itself
     */
    protected dialogComponent: Type<unknown> | undefined | null;
    /**
     * Columns for selection that are currently
     */
    protected columnsForSelection: WritableSignal<GridColumn[]>;
    /**
     * @inheritdoc
     */
    gridPlugins: GridPluginInstances | undefined | null;
    /**
     * @inheritdoc
     */
    pluginElement: ElementRef<HTMLElement>;
    /**
     * @inheritdoc
     */
    get options(): DialogMetadataSelectorOptions;
    set options(options: DialogMetadataSelectorOptions);
    /**
     * @inheritdoc
     */
    get metadata(): Signal<TableGridMetadata<GridColumn> | undefined | null>;
    constructor(storage: PermanentStorage, dialog: MatDialog, options?: DialogMetadataSelectorOptions);
    /**
     * Called when component is destroyed
     */
    ngOnDestroy(): void;
    /**
     * @inheritdoc
     */
    show(): void;
    /**
     * @inheritdoc
     */
    resetMetadata(): void;
    /**
     * @inheritdoc
     */
    setMetadataGatherer(gatherer: MetadataGatherer<TableGridMetadata<GridColumn>>): void;
    /**
     * @inheritdoc
     */
    initialize(force: boolean): void;
    /**
     * @inheritdoc
     */
    initOptions(): void;
    /**
     * @inheritdoc
     */
    invalidateVisuals(): void;
    /**
     * Initialize metadata
     */
    protected initMetadata(): void;
    /**
     * Saves current state to storage
     */
    protected saveToStorage(): void;
    /**
     * Gets stored storage state
     */
    protected loadFromStorage(): StorageState | undefined | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<DialogMetadataSelectorComponent, [null, null, { optional: true; }]>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DialogMetadataSelectorComponent, "ng-dialog-metadata-selector", never, {}, {}, never, never, true, never>;
}
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