import { TooltipTrigger } from '../chart/types';
import type { NameType, Payload, ValueType } from '../component/DefaultTooltipContent';
import { CartesianViewBoxRequired, Coordinate, DataKey, PolarCoordinate } from '../util/types';
import { AxisId } from './cartesianAxisSlice';
/**
 * One Tooltip can display multiple TooltipPayloadEntries at a time.
 */
export type TooltipPayloadEntry = Payload<ValueType, NameType>;
/**
 * So what happens is that the tooltip payload is decided based on the available data, and the dataKey.
 * The dataKey can either be defined on the graphical element (like Line, or Bar)
 * or on the tooltip itself.
 *
 * The data can be defined in the chart element, or in the graphical item.
 *
 * So this type is all the settings, other than the data + dataKey complications.
 */
export type TooltipEntrySettings = Omit<TooltipPayloadEntry, 'payload' | 'value'> & {
    nameKey: DataKey<any> | undefined;
};
/**
 * This is what Tooltip renders.
 */
export type TooltipPayload = ReadonlyArray<TooltipPayloadEntry>;
/**
 * null means no active index
 * string means: whichever index from the chart data it is.
 * Different charts have different requirements on data shapes,
 * and are also responsible for providing a function that will accept this index
 * and return data.
 */
export type TooltipIndex = string | null;
/**
 * Different items have different data shapes so the state has no opinion on what the data shape should be;
 * the only requirement is that the chart also provides a searcher function
 * that accepts the data, and a key, and returns whatever the payload in Tooltip should be.
 */
export type TooltipPayloadSearcher<T = unknown, R = T> = (data: T, index: TooltipIndex, computedData?: unknown, nameKey?: DataKey<any>) => R | undefined;
export type TooltipPayloadConfiguration = {
    settings: TooltipEntrySettings;
    /**
     * This is the data that the item has provided, all of it mixed together.
     * Later as user is interacting with the chart, a redux selector will use this
     * data + activeIndex, pass it to the TooltipPayloadSearcher, and render the result in a Tooltip.
     */
    dataDefinedOnItem: unknown;
    /**
     * Opportunity for the graphical item to define its own Tooltip coordinates
     * instead of relying on the axes.
     *
     * If undefined, then Recharts will use mouse interaction coordinates, or the axis coordinates,
     * with some defaults (like, top/left of the chart).
     */
    positions: Record<NonNullable<TooltipIndex>, Coordinate> | ReadonlyArray<Coordinate> | undefined;
};
export type ActiveTooltipProps = {
    activeIndex: TooltipIndex;
    activeCoordinate: Coordinate | PolarCoordinate | undefined;
};
/**
 * So this informs the "tooltip event type". Tooltip event type can be either "axis" or "item"
 * and it is used for two things:
 * 1. Sets the active area
 * 2. Sets the background and cursor highlights
 *
 * Some charts only allow to have one type of tooltip event type, some allow both.
 * Those charts that allow both will have one default, and the "shared" prop will be used to switch between them.
 * Undefined means "use the chart default".
 *
 * Charts that only allow one tooltip event type, will ignore the shared prop.
 */
export type SharedTooltipSettings = boolean | undefined;
export type TooltipSettingsState = {
    shared: SharedTooltipSettings;
    trigger: TooltipTrigger;
    axisId: AxisId;
    /**
     * The `active` prop, despite its name, does not mean "always active".
     * It means "active after user interaction has ended".
     * By default, the tooltip is only active while the user is hovering over the chart.
     * With `active=true`, the tooltip will remain visible after mouse leave event.
     *
     * If you want to see the "active before user interaction" settings, see `defaultIndex`.
     *
     * Undefined means "depends on user interactions".
     */
    active: boolean | undefined;
    /**
     * If you want to set the tooltip to be active before user interaction, you can set this property.
     */
    defaultIndex: TooltipIndex | undefined;
};
/**
 * A generic state for user interaction with the chart.
 * User interaction can come through multiple channels: mouse events, keyboard events, or hardcoded in props, or synchronised from other charts.
 *
 * Each of the interaction states is represented as TooltipInteractionState,
 * and then the selectors and Tooltip will decide which of the interaction states to use.
 */
export type TooltipInteractionState = {
    /**
     * If user interaction is in progress or not.
     * Why is this its own property? Why is this not computed from the index?
     * Certainly if index !== -1 then the tooltip is active, right?
     * Well not so fast. Recharts allows Tooltips can be set to `active=true`
     * which means the tooltip remains displayed after the user stops interacting.
     * - This implies that we cannot set index to <empty value> after interaction ends,
     *   because the chart must remember the last position just in case the `active` prop on Tooltip is set to true.
     */
    active: boolean;
    /**
     * This is the current data index that is set for the chart.
     * This can come from mouse events, keyboard events, or hardcoded in props
     * in property `defaultIndex` on Tooltip.
     */
    index: TooltipIndex | undefined;
    /**
     * DataKey filter.
     *
     * In case of multiple graphical items, this is the dataKey that is set for the item.
     * Very useful for `Tooltip.shared=false`, where activeIndex can display multiple values,
     * but we only want to display one of them.
     *
     * If we want to interact with all the graphical items, then this is undefined.
     * This is the case for eventTooltipType === 'axis' for example.
     */
    dataKey: DataKey<any> | undefined;
    /**
     * The Coordinate where user last interacted with the chart. This needs saved so we can continue to render the tooltip at that point.
     * This is undefined on several occasions:
     * - before the user started interacting with the chart,
     * - when the chart is controlled programmatically through `defaultIndex` prop
     * - when the chart is controlled using keyboard interactions
     */
    coordinate: Coordinate | PolarCoordinate | undefined;
};
export type TooltipSyncState = TooltipInteractionState & {
    /**
     * Tooltip synchronization is a feature that allows multiple charts to share the same interaction state.
     * This comes with one specialty - the syncMethod. `syncMethod=value` allows the user to synchronise charts
     * based on the active label (which is rendered as the title of the Tooltip).
     * To allow that, we need the label to be stored in the sync state.
     */
    label: string | undefined;
    /**
     * ViewBox of the chart that sent the sync event.
     * Used to scale coordinates between charts of different sizes so tooltips
     * show up in the right place on all synchronized charts.
     */
    sourceViewBox: CartesianViewBoxRequired | undefined;
};
export declare const noInteraction: TooltipInteractionState;
/**
 * The tooltip interaction state stores:
 *
 * - Which graphical item is user interacting with at the moment,
 * - which axis (or, which part of chart background) is user interacting with at the moment
 * - The data that individual graphical items wish to be displayed in case the tooltip gets activated
 */
export type TooltipState = {
    /**
     * This is the state of interactions with individual graphical items.
     */
    itemInteraction: {
        click: TooltipInteractionState;
        /**
         * Why is hover activation separate from click activation? Because they are independent:
         * If a click is set, then mouseLeave should not clear it.
         * - the opposite is technically true too - but it's difficult to click on things without also hovering.
         */
        hover: TooltipInteractionState;
    };
    /**
     * This is the state of interaction with the bar background - which will get mapped
     * to the axis index.
     *
     * Axis interaction is independent of item interaction so the state must also be independent.
     */
    axisInteraction: {
        click: TooltipInteractionState;
        hover: TooltipInteractionState;
    };
    keyboardInteraction: TooltipInteractionState;
    /**
     * This part of the state is the information coming from other charts.
     * If there are two charts with the same syncId, events from one chart will be transferred
     * to other charts. So this is what the other charts are reporting.
     */
    syncInteraction: TooltipSyncState;
    /**
     * One graphical item will have one configuration;
     * hovering over multiple of them (for example with tooltipEventType===axis)
     * may render multiple tooltip payloads.
     */
    tooltipItemPayloads: ReadonlyArray<TooltipPayloadConfiguration>;
    /**
     * Tooltip props or other settings that need redux access.
     * This assumes that there is always only one Tooltip. In case we want to start supporting multiple Tooltips,
     * we have to change this to an array - and update all the places reading this state too.
     */
    settings: TooltipSettingsState;
};
export declare const initialState: TooltipState;
export type TooltipActionPayload = {
    activeIndex: TooltipIndex | undefined;
    activeDataKey: DataKey<any> | undefined;
    activeCoordinate?: Coordinate | undefined;
};
export declare const addTooltipEntrySettings: import("@reduxjs/toolkit").ActionCreatorWithPreparedPayload<[payload: TooltipPayloadConfiguration], TooltipPayloadConfiguration, "tooltip/addTooltipEntrySettings", never, unknown>, removeTooltipEntrySettings: import("@reduxjs/toolkit").ActionCreatorWithPreparedPayload<[payload: TooltipPayloadConfiguration], TooltipPayloadConfiguration, "tooltip/removeTooltipEntrySettings", never, unknown>, setTooltipSettingsState: import("@reduxjs/toolkit").ActionCreatorWithPayload<TooltipSettingsState, "tooltip/setTooltipSettingsState">, setActiveMouseOverItemIndex: import("@reduxjs/toolkit").ActionCreatorWithPayload<TooltipActionPayload, "tooltip/setActiveMouseOverItemIndex">, mouseLeaveItem: import("@reduxjs/toolkit").ActionCreatorWithoutPayload<"tooltip/mouseLeaveItem">, mouseLeaveChart: import("@reduxjs/toolkit").ActionCreatorWithoutPayload<"tooltip/mouseLeaveChart">, setActiveClickItemIndex: import("@reduxjs/toolkit").ActionCreatorWithPayload<TooltipActionPayload, "tooltip/setActiveClickItemIndex">, setMouseOverAxisIndex: import("@reduxjs/toolkit").ActionCreatorWithPayload<TooltipActionPayload, "tooltip/setMouseOverAxisIndex">, setMouseClickAxisIndex: import("@reduxjs/toolkit").ActionCreatorWithPayload<TooltipActionPayload, "tooltip/setMouseClickAxisIndex">, setSyncInteraction: import("@reduxjs/toolkit").ActionCreatorWithPayload<TooltipSyncState, "tooltip/setSyncInteraction">, setKeyboardInteraction: import("@reduxjs/toolkit").ActionCreatorWithPayload<TooltipActionPayload & {
    active: boolean;
}, "tooltip/setKeyboardInteraction">;
export declare const tooltipReducer: import("redux").Reducer<TooltipState>;