sailboat-design
Version:
A simple sailboat simulator
163 lines (162 loc) • 7.83 kB
JavaScript
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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var __generator = (this && this.__generator) || function (thisArg, body) {
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import { jsx as _jsx, jsxs as _jsxs, Fragment as _Fragment } from "react/jsx-runtime";
import classNames from 'classnames';
import React, { useContext, useEffect } from 'react';
import { FormContext } from './form';
import { ADD_FIELD, UPDATE_VALIDATE_RESULT, UPDATE_VALUE } from './useStore';
// 检查子组件function
function checkChild(childList) {
if (childList.length === 0) {
console.error('NO child element found in Form.Item, please add a child element');
}
// 子组件大于一个
if (childList.length > 1) {
console.warn('Only support one child element in Form.Item, others will be ignored');
}
// 不是ReactElement
if (!React.isValidElement(childList[0])) {
console.error('Child element must be a ReactElement');
}
}
export function FormItem(props) {
var _this = this;
var _a = props, children = _a.children, label = _a.label, name = _a.name, valuePropName = _a.valuePropName, trigger = _a.trigger, validateTrigger = _a.validateTrigger, getValueFromEvent = _a.getValueFromEvent, rules = _a.rules;
// 没有label的时候给特定的class
var _b = useContext(FormContext), dispatch = _b.dispatch, fields = _b.fields, initialValues = _b.initialValues, validateField = _b.validateField;
// 初始化注册一次
useEffect(function () {
// 默认值
var value = initialValues ? initialValues[name] : '';
dispatch({
type: ADD_FIELD,
name: name,
value: {
label: label,
name: name,
value: value,
rules: rules || [],
errors: [],
isValid: true
}
});
}, []);
// 获取store中的value
var filedState = fields[name];
var value = filedState && filedState.value;
var errors = filedState && filedState.errors;
var isRequired = rules === null || rules === void 0 ? void 0 : rules.some(function (rule) {
return typeof rule !== 'function' ? rule.required : false;
});
var hasError = errors && errors.length > 0;
var rowClass = classNames('sailboat-row', {
'sailboat-row-no-label': !label
});
var labelClass = classNames({
'sailboat-form-item-required': isRequired
});
var itemClass = classNames({
'sailboat-form-item-has-error': hasError
});
// 更新value
var onValueUpdate = function (e) {
// 怎么样从事件对象e里面获取到value
var value = getValueFromEvent(e);
dispatch({
type: UPDATE_VALUE,
name: name,
value: value
});
};
// 校验
var onValueValidate = function () { return __awaiter(_this, void 0, void 0, function () {
var error;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, validateField(name)];
case 1:
error = _a.sent();
return [2 /*return*/, error];
}
});
}); };
// 1 手动创建一个属性列表, 需要有value , 以及onChange
var controlProps = {};
// value的属性名称
controlProps[valuePropName] = value;
// 回调属性名称
controlProps[trigger] = onValueUpdate;
// 触发校验
if (rules) {
controlProps[validateTrigger] = onValueValidate;
}
// 聚焦的时候清除错误
controlProps.onFocus = function () {
dispatch({
type: UPDATE_VALIDATE_RESULT,
name: name,
value: { errors: [], isValid: true }
});
};
// todo 适应不同的事件以及value属性名称
// 2 获取children中的第一个元素,
var childList = React.Children.toArray(children);
// todo 判断children的类型, 给出警告
checkChild(childList);
var child = childList[0];
// 3 并且cloneElement, 传入属性列表
var childWithProps = React.cloneElement(child, __assign(__assign({}, child.props), controlProps));
return (_jsx(_Fragment, { children: _jsxs("div", __assign({ className: rowClass }, { children: [label && (_jsx("label", __assign({ title: label, className: "sailboat-form-item-label ".concat(labelClass) }, { children: label }))), _jsxs("div", __assign({ className: "sailboat-form-item" }, { children: [_jsx("div", __assign({ className: itemClass }, { children: childWithProps })), hasError && (_jsx("div", __assign({ className: "sailboat-form-item-error" }, { children: _jsx("span", { children: errors[0].message }) })))] }))] })) }));
}
FormItem.defaultProps = {
valuePropName: 'value',
trigger: 'onChange',
validateTrigger: 'onBlur',
getValueFromEvent: function (e) { return e.target.value; }
};
export default FormItem;