CNCEC_APP/uni_modules/uview-pro/components/u-radio/u-radio.vue

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2026-03-25 14:54:15 +08:00
<template>
<view class="u-radio" :style="$u.toStyle(radioStyle, customStyle)" :class="customClass">
<view class="u-radio__icon-wrap" @tap="toggle" :class="iconClass" :style="$u.toStyle(iconStyle)">
<u-icon class="u-radio__icon-wrap__icon" name="checkbox-mark" :size="elIconSize" :color="iconColor" />
</view>
<view
class="u-radio__label"
@tap="onClickLabel"
:style="{
fontSize: $u.addUnit(labelSize)
}"
>
<slot>
{{ label }}
</slot>
</view>
</view>
</template>
<script lang="ts">
export default {
name: 'u-radio',
options: {
addGlobalClass: true,
// #ifndef MP-TOUTIAO
virtualHost: true,
// #endif
styleIsolation: 'shared'
}
};
</script>
<script setup lang="ts">
import { computed } from 'vue';
import { $u, useChildren } from '../..';
import { RadioProps } from './types';
/**
* radio 单选框
* @description 单选框用于有一个选择用户只能选择其中一个的场景搭配u-radio-group使用
* @tutorial https://uviewpro.cn/zh/components/radio.html
* @property {String|Number} icon-size 图标大小单位rpx默认24
* @property {String|Number} label-size label字体大小单位rpx默认28
* @property {String|Number} name radio组件的标示符
* @property {String} shape 形状见上方说明默认circle
* @property {Boolean} disabled 是否禁用默认false
* @property {Boolean} label-disabled 点击文本是否可以操作radio默认true
* @property {String} active-color 选中时的颜色如设置parent的active-color将失效
* @event {Function} change 某个radio状态发生变化时触发(选中状态)
* @example <u-radio :label-disabled="false">门掩黄昏无计留春住</u-radio>
*/
const props = defineProps(RadioProps);
const emit = defineEmits(['change']);
// 使用组件关系 hooks 获取父组件
const { parentExposed } = useChildren('u-radio', 'u-radio-group');
// radio 的value值id
const radioValue = computed(() => {
if (props.value !== '') return props.value;
return props.name;
});
// 父组件的默认值(兼容没有父组件的场景)
const parentData = computed(() => {
return (
parentExposed?.value?.getData?.() || {
iconSize: null,
labelDisabled: null,
disabled: null,
shape: null,
activeColor: null,
size: null,
width: null,
height: null,
value: null,
wrap: null
}
);
});
/**
* 是否禁用如果父组件u-radio-group禁用的话将会忽略子组件的配置
*/
const elDisabled = computed(() =>
props.disabled !== '' ? props.disabled : parentData.value.disabled !== null ? parentData.value.disabled : false
);
/**
* 是否禁用label点击
*/
const elLabelDisabled = computed(() =>
props.labelDisabled !== ''
? props.labelDisabled
: parentData.value.labelDisabled !== null
? parentData.value.labelDisabled
: false
);
/**
* 组件尺寸对应size的值默认值为34rpx
* 兼容无size属性场景
*/
const elSize = computed(() => {
// 若props无size直接用默认值
// 兼容老代码parentData.value.size 可能不存在
return (props as any).size ? (props as any).size : parentData.value.size ? parentData.value.size : 34;
});
/**
* 组件的勾选图标的尺寸默认20
*/
const elIconSize = computed(() =>
props.iconSize ? props.iconSize : parentData.value.iconSize ? parentData.value.iconSize : 20
);
/**
* 组件选中激活时的颜色
*/
const elActiveColor = computed(() =>
props.activeColor ? props.activeColor : parentData.value.activeColor ? parentData.value.activeColor : 'primary'
);
/**
* 组件的形状
*/
const elShape = computed(() =>
props.shape ? props.shape : parentData.value.shape ? parentData.value.shape : 'circle'
);
/**
* 设置radio的状态要求radio的name等于parent的value时才为选中状态
*/
const iconStyle = computed(() => {
let style: Record<string, string> = {};
if (elActiveColor.value && parentData.value.value == radioValue.value && !elDisabled.value) {
style.borderColor = elActiveColor.value;
style.backgroundColor = elActiveColor.value;
}
style.width = $u.addUnit(elSize.value);
style.height = $u.addUnit(elSize.value);
return style;
});
const iconColor = computed(() => (radioValue.value == parentData.value.value ? 'var(--u-white-color)' : 'transparent'));
const iconClass = computed(() => {
let classes: string[] = [];
classes.push('u-radio__icon-wrap--' + elShape.value);
if (radioValue.value == parentData.value.value) classes.push('u-radio__icon-wrap--checked');
if (elDisabled.value) classes.push('u-radio__icon-wrap--disabled');
if (radioValue.value == parentData.value.value && elDisabled.value)
classes.push('u-radio__icon-wrap--disabled--checked');
// 支付宝小程序无法动态绑定一个数组类名,否则解析出来的结果会带有",",而导致失效
return classes.join(' ');
});
const radioStyle = computed(() => {
let style: Record<string, string> = {};
if (parentData.value.width) {
style.width = $u.addUnit(parentData.value.width);
// #ifdef MP
// 各家小程序因为它们特殊的编译结构使用float布局
style.float = 'left';
// #endif
// #ifndef MP
// H5和APP使用flex布局
style.flex = `0 0 ${$u.addUnit(parentData.value.width)}`;
// #endif
}
if (parentData.value.wrap) {
style.width = '100%';
// #ifndef MP
// H5和APP使用flex布局将宽度设置100%,即可自动换行
style.flex = '0 0 100%';
// #endif
}
return style;
});
/**
* 点击label
*/
function onClickLabel() {
if (!elLabelDisabled.value && !elDisabled.value) {
setRadioCheckedStatus();
}
}
/**
* 点击icon
*/
function toggle() {
if (!elDisabled.value) {
setRadioCheckedStatus();
}
}
/**
* 发出事件
*/
function emitEvent() {
// u-radio的name不等于父组件的v-model的值时(意味着未选中),才发出事件,避免多次点击触发事件
if (parentData.value.value != radioValue.value) emit('change', radioValue.value);
}
/**
* 改变组件选中状态
* 这里的改变的依据是更改本组件的parentData.value值为本组件的name值同时通过父组件遍历所有u-radio实例
* 将本组件外的其他u-radio的parentData.value都设置为空(由computed计算后都被取消选中状态)因而只剩下一个为选中状态
*/
function setRadioCheckedStatus() {
emitEvent();
parentExposed?.value?.setValue(radioValue.value);
}
</script>
<style lang="scss" scoped>
@import '../../libs/css/style.components.scss';
.u-radio {
/* #ifndef APP-NVUE */
display: inline-flex;
/* #endif */
align-items: center;
overflow: hidden;
user-select: none;
line-height: 1.8;
&__icon-wrap {
color: $u-content-color;
@include vue-flex;
flex: none;
align-items: center;
justify-content: center;
box-sizing: border-box;
width: 42rpx;
height: 42rpx;
color: transparent;
text-align: center;
transition-property: color, border-color, background-color;
font-size: 20px;
border: 1px solid var(--u-border-color);
transition-duration: 0.2s;
/* #ifdef MP-TOUTIAO */
// 头条小程序兼容性问题需要设置行高为0否则图标偏下
&__icon {
line-height: 0;
}
/* #endif */
&--circle {
border-radius: 100%;
}
&--square {
border-radius: 3px;
}
&--checked {
color: var(--u-white-color);
background-color: $u-type-primary;
border-color: $u-type-primary;
}
&--disabled {
background-color: var(--u-bg-gray-light);
border-color: var(--u-border-color);
}
&--disabled--checked {
color: var(--u-bg-gray-light) !important;
}
}
&__label {
word-wrap: break-word;
margin-left: 10rpx;
margin-right: 24rpx;
color: $u-content-color;
font-size: 30rpx;
&--disabled {
color: var(--u-bg-gray-light);
}
}
}
</style>