/**
 * This reducer manages a collection of items that represent the content of an overflowable container.
 * The items are mostly content configured by the caller of the container, either data passed though
 * the source prop or as child elements. We also support 'injected' items. These allow for additional UI
 * controls to be inserted into the container, eg an 'Add Item' button.
 */
import { type ReactElement, type ReactNode, type Reducer } from "react";
import type { OverflowCollectionOptions, OverflowItem, OverflowItems, OverflowSource } from "./overflowTypes";
interface InitAction {
    type: "init";
    overflowItems?: OverflowItem[];
}
interface SourceAction {
    type: "add-source-item";
    idRoot: string;
    source: any;
}
interface AddChildAction {
    type: "add-child-item";
    idRoot: string;
    indexPosition?: number;
    element: ReactElement;
}
interface RemoveItemAction {
    type: "remove-item";
    indexPosition: number;
}
interface MultiItemAction {
    type: "update-items" | "update-items-remove-overflow-indicator";
    overflowItems: (Partial<Omit<OverflowItem, "id">> & Pick<OverflowItem, "id">)[];
}
interface SingleItemAction {
    type: "add-overflow-indicator" | "replace-item" | "collapsing-item" | "uncollapse-dynamic-item" | "collapse-instant-item";
    overflowItem: OverflowItem;
}
interface CombinedItemAction {
    type: "update-items-add-overflow-indicator";
    overflowItem: OverflowItem<any>;
    overflowItems: OverflowItem[];
}
interface EmptyPayloadAction {
    type: "restore-collapsing-item";
}
interface DynamicCollapseAction extends Omit<SingleItemAction, "type"> {
    type: "collapse-dynamic-item";
    collapsedSize: number;
    minSize: number;
}
export type OverflowAction = AddChildAction | CombinedItemAction | DynamicCollapseAction | EmptyPayloadAction | InitAction | MultiItemAction | RemoveItemAction | SingleItemAction | SourceAction;
export type OverflowReducer = Reducer<OverflowItems, OverflowAction>;
export type OverflowReducerInitialisationProps = {
    children?: ReactNode;
    source?: OverflowSource[];
    injectedItems?: any[];
    idRoot: string;
    options?: OverflowCollectionOptions;
};
export declare const reducerInitialiser: (props: OverflowReducerInitialisationProps) => OverflowItems;
export declare const overflowReducer: OverflowReducer;
export {};