victory-core/es/victory-portal/portal-context.js

Victory Core

import React from "react";
export const PortalContext = /*#__PURE__*/React.createContext(undefined);
PortalContext.displayName = "PortalContext";
export const usePortalContext = () => {
  const context = React.useContext(PortalContext);
  return context;
};
export const PortalProvider = _ref => {
  let {
    children
  } = _ref;
  const [portalChildren, setPortalChildren] = React.useState(new Map());
  const addChild = React.useCallback((id, element) => {
    setPortalChildren(prevChildren => {
      const nextChildren = new Map(prevChildren);
      nextChildren.set(id, element);
      return nextChildren;
    });
  }, [setPortalChildren]);
  const removeChild = React.useCallback(id => {
    setPortalChildren(prevChildren => {
      const nextChildren = new Map(prevChildren);
      nextChildren.delete(id);
      return nextChildren;
    });
  }, [setPortalChildren]);
  const contextValue = React.useMemo(() => ({
    addChild,
    removeChild,
    children: portalChildren
  }), [addChild, removeChild, portalChildren]);
  return /*#__PURE__*/React.createElement(PortalContext.Provider, {
    value: contextValue
  }, children);
};