import { Editor, CaretPos, BlockData, ContainerElement, BlockElement } from "../interface";
import RichTextDocument from "../text/RichTextDocument";
declare class Action {
    containerId: string;
    beforeCaretPos: CaretPos;
    afterCaretPos: CaretPos;
    constructor(editor: Editor, container: ContainerElement);
    undo(editor: Editor): boolean;
    redo(editor: Editor): boolean;
    combinable(other: Action): boolean;
    combine(other: Action): void;
}
declare class UndoState {
    editor: Editor;
    private actions;
    private undoCursor;
    private currentGroup;
    private caretPos;
    private groupCounter;
    constructor(editor: Editor);
    rememberCaretPos(): void;
    lastCaretPos(): CaretPos;
    reset(): void;
    prepareSveUndoState(): void;
    addAction(action: Action): void;
    onUpdateBlockTextAction(container: ContainerElement, block: BlockElement, oldData: RichTextDocument): void;
    onUpdateBlockDataAction(container: ContainerElement, block: BlockElement, oldData: BlockData): void;
    onReplaceBlockAction(container: ContainerElement, blockId: string, oldData: BlockData, newData: BlockData): void;
    onCreateBlockAction(container: ContainerElement, block: BlockElement, index: number, data: BlockData): void;
    onDeleteBlockAction(container: ContainerElement, index: number): void;
    beginGroup(): void;
    endGroup(): void;
    hasGroup(): boolean;
    private fixSelection;
    undo(): boolean;
    redo(): boolean;
    canUndo(): boolean;
    canRedo(): boolean;
}
export default UndoState;