ant-design/components/slider/index.tsx

import * as React from 'react';
import RcSlider, { SliderProps as RcSliderProps } from 'rc-slider';
import classNames from 'classnames';
import { TooltipPlacement } from '../tooltip';
import SliderTooltip from './SliderTooltip';
import { ConfigContext } from '../config-provider';

export type SliderMarks = RcSliderProps['marks'];

interface HandleGeneratorInfo {
  value?: number;
  dragging?: boolean;
  index: number;
}

export type HandleGeneratorFn = (config: {
  tooltipPrefixCls?: string;
  prefixCls?: string;
  info: HandleGeneratorInfo;
}) => React.ReactElement;

export interface SliderBaseProps {
  prefixCls?: string;
  tooltipPrefixCls?: string;
  reverse?: boolean;
  min?: number;
  max?: number;
  step?: null | number;
  marks?: SliderMarks;
  dots?: boolean;
  included?: boolean;
  disabled?: boolean;
  vertical?: boolean;
  tipFormatter?: null | ((value?: number) => React.ReactNode);
  className?: string;
  id?: string;
  style?: React.CSSProperties;
  tooltipVisible?: boolean;
  tooltipPlacement?: TooltipPlacement;
  getTooltipPopupContainer?: (triggerNode: HTMLElement) => HTMLElement;
  autoFocus?: boolean;
}

export interface SliderSingleProps extends SliderBaseProps {
  range?: false;
  value?: number;
  defaultValue?: number;
  onChange?: (value: number) => void;
  onAfterChange?: (value: number) => void;
  handleStyle?: React.CSSProperties;
  trackStyle?: React.CSSProperties;
}

export interface SliderRangeProps extends SliderBaseProps {
  range: true | SliderRange;
  value?: [number, number];
  defaultValue?: [number, number];
  onChange?: (value: [number, number]) => void;
  onAfterChange?: (value: [number, number]) => void;
  handleStyle?: React.CSSProperties[];
  trackStyle?: React.CSSProperties[];
}

interface SliderRange {
  draggableTrack?: boolean;
}

export type Visibles = { [index: number]: boolean };

const Slider = React.forwardRef<unknown, SliderSingleProps | SliderRangeProps>(
  (props, ref: any) => {
    const { getPrefixCls, direction, getPopupContainer } = React.useContext(ConfigContext);
    const [visibles, setVisibles] = React.useState<Visibles>({});

    const toggleTooltipVisible = (index: number, visible: boolean) => {
      setVisibles((prev: Visibles) => ({ ...prev, [index]: visible }));
    };