@visactor/react-vchart/esm/components/tooltip/util.js

The react version of VChart 4.x

import React from "react";

import { REACT_TOOLTIP_ClASS_NAME } from "./constant";

import { createPortal } from "react-dom";

export const initCustomTooltip = (setTooltipNode, props, spec) => {
    let render;
    if ((null == spec ? void 0 : spec.tooltipRender) ? (render = spec.tooltipRender, 
    delete spec.tooltipRender) : props.tooltipRender && (render = props.tooltipRender), 
    render) {
        let reserve;
        return (null == spec ? void 0 : spec.reserveDefaultTooltip) ? (reserve = spec.reserveDefaultTooltip, 
        delete spec.reserveDefaultTooltip) : reserve = props.reserveDefaultTooltip, Object.assign(Object.assign({}, spec), {
            updateElement: (el, actualTooltip, params) => {
                const {changePositionOnly: changePositionOnly} = params;
                if (!changePositionOnly) {
                    if (!reserve) {
                        el.style.width = "auto", el.style.height = "auto", el.style.minHeight = "auto", 
                        el.style.padding = "0px";
                        for (let i = 0; i < el.children.length; i++) {
                            const childNode = el.children[i];
                            childNode.className !== REACT_TOOLTIP_ClASS_NAME && "none" !== childNode.style.display && (childNode.style.display = "none");
                        }
                    }
                    setTooltipNode(createPortal(React.createElement("div", {
                        className: REACT_TOOLTIP_ClASS_NAME
                    }, render(el, actualTooltip, params)), el));
                }
            }
        });
    }
    return spec;
};
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