import { EditorView } from '@codemirror/view';
/**
 * Ghost text content and placement.
 */
export interface IGhostText {
    /**
     * Offset in the editor where the ghost text should be placed
     */
    from: number;
    /**
     * The content of the ghost text.
     */
    content: string;
    /**
     * The identifier of the completion provider.
     */
    providerId: string;
    /**
     * The tokens added in the last stream update, must be a suffix of the content.
     */
    addedPart?: string;
    /**
     * Whether streaming is in progress.
     */
    streaming?: boolean;
    /**
     * Maximum number of lines to show.
     */
    maxLines?: number;
    /**
     * Minimum number of lines to reserve (to avoid frequent resizing).
     */
    minLines?: number;
    /**
     * An error occurred in the request.
     */
    error?: {
        /**
         * A message explaining the error.
         */
        message?: string;
    };
    /**
     * Callback to execute when pointer enters the boundary of the ghost text.
     */
    onPointerOver?: () => void;
    /**
     * Callback to execute when pointer leaves the boundary of the ghost text.
     */
    onPointerLeave?: () => void;
}
export declare class GhostTextManager {
    protected options: GhostTextManager.IOptions;
    constructor(options: GhostTextManager.IOptions);
    /**
     * Typing animation.
     */
    static streamingAnimation: 'none' | 'uncover';
    /**
     * Delay for removal of line spacer.
     */
    static spacerRemovalDelay: number;
    /**
     * Duration for line spacer removal.
     */
    static spacerRemovalDuration: number;
    /**
     * Place ghost text in an editor.
     */
    placeGhost(view: EditorView, text: IGhostText): void;
    /**
     * Clear all ghost texts from the editor.
     */
    clearGhosts(view: EditorView): void;
}
export declare namespace GhostTextManager {
    /**
     * The initialization options for ghost text manager.
     */
    interface IOptions {
        /**
         * Callback for editor `blur` event.
         * Returning true will prevent the default action of removing current ghost.
         */
        onBlur(event: FocusEvent): boolean;
    }
}