import type { AnnounceFeatureKey } from './features/AnnounceFeatures';
import type { AnnounceFeature } from './AnnounceFeature';
import type { CompatibleKnownAnnounceStrings } from 'roosterjs-editor-types/lib/compatibleTypes';
import type { EditorPlugin, IEditor, PluginEvent, AnnounceData, KnownAnnounceStrings } from 'roosterjs-editor-types';
/**
 * Announce messages to screen reader by using aria live element.
 */
export default class Announce implements EditorPlugin {
    private stringsMapOrGetter?;
    private ariaLiveElement;
    private editor;
    private features;
    private lastFocusedElement;
    constructor(stringsMapOrGetter?: Map<KnownAnnounceStrings | CompatibleKnownAnnounceStrings, string> | ((key: KnownAnnounceStrings | CompatibleKnownAnnounceStrings) => string) | undefined, skipAnnounceFeatures?: AnnounceFeatureKey[], additionalFeatures?: AnnounceFeature[]);
    /**
     * Get a friendly name of this plugin
     */
    getName(): string;
    /**
     * Initialize this plugin
     * @param editor The editor instance
     */
    initialize(editor: IEditor): void;
    /**
     * Dispose this plugin
     */
    dispose(): void;
    /**
     * Handle events triggered from editor
     * @param event PluginEvent object
     */
    onPluginEvent(ev: PluginEvent): void;
    private handleFeatures;
    protected announce(announceData: AnnounceData, editor: IEditor): void;
    private getString;
    /**
     * @internal
     * Public only for unit testing.
     * @returns
     */
    getAriaLiveElement(): HTMLDivElement | undefined;
}