lole-ui/dist/components/Menu/subMenu.js

React UI Component which like a love letter

var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
import React, { useContext, useState } from "react";
import classNames from 'classnames';
import { MenuContext } from "./menu";
import Icon from "../Icon/icon";
import Animator from "../Animator/animator";
var SubMenu = function (_a) {
    var index = _a.index, title = _a.title, children = _a.children, className = _a.className;
    var context = useContext(MenuContext);
    var openSubMenus = context.defaultOpenSubMenus;
    var isOpened = (index && context.mode === 'vertical') ? openSubMenus.includes(index) : false;
    var _b = useState(isOpened), menuOpen = _b[0], setOpen = _b[1];
    var classes = classNames('menu-item submenu-item', className, {
        'is-active': context.index === index,
        'is-opened': menuOpen,
        'is-vertical': context.mode === 'vertical',
    });
    var handleClick = function (e) {
        e.preventDefault();
        setOpen(!menuOpen);
    };
    /**
     * 鼠标移入 hover打开计时
     */
    var timer;
    var handleMouse = function (e, toggle) {
        clearTimeout(timer);
        e.preventDefault();
        timer = setTimeout(function () {
            setOpen(toggle);
        }, 200);
    };
    var clickEvents = context.mode === 'vertical' ? { onClick: handleClick } : {};
    var hoverEvents = context.mode !== 'vertical' ? {
        onMouseEnter: function (e) { handleMouse(e, true); },
        onMouseLeave: function (e) { handleMouse(e, false); }
    } : {};
    var renderChildren = function () {
        var subMenuClasses = classNames('xiOn-submenu', {
            'menu-opened': menuOpen
        });
        var childrenComponent = React.Children.map(children, function (child, i) {
            var childElement = child;
            if (childElement.type.displayName === 'MenuItem') {
                return React.cloneElement(childElement, {
                    index: "".concat(index, "-").concat(i)
                });
            }
            else {
                console.error('Warning: SubMenu has a child which is not a MenuItem component !');
            }
        });
        return (React.createElement(Animator, { in: menuOpen, timeout: 300, animation: 'zoom-in-bottom' },
            React.createElement("ul", { className: subMenuClasses }, childrenComponent)));
    };
    return (React.createElement("li", __assign({ key: index, className: classes }, hoverEvents),
        React.createElement("div", __assign({ className: 'submenu-title' }, clickEvents),
            title,
            React.createElement(Icon, { icon: 'angle-down', className: 'arrow-icon' })),
        renderChildren()));
};
SubMenu.displayName = 'SubMenu';
export default SubMenu;