初始化本地仓库
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import type { ExtractPropTypes, PropType } from 'vue';
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import type { SizeType } from '../../types/global';
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/**
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* SwitchProps 开关选择器 props 类型定义
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* @description 选择开关，支持自定义颜色、尺寸、值等
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*/
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export const SwitchProps = {
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/** 自定义根节点样式 */
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customStyle: {
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type: [String, Object] as PropType<string | Record<string, any>>,
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default: () => ({})
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},
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/** 自定义根节点样式类 */
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customClass: {
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type: String as unknown as PropType<string>,
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default: ''
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},
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/** 是否显示加载中状态 */
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loading: { type: Boolean, default: false },
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/** 是否禁用 */
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disabled: { type: Boolean, default: false },
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/** 开关尺寸，单位rpx */
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size: { type: [Number, String] as PropType<number | string | SizeType>, default: '' },
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/** 打开时的颜色 */
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activeColor: { type: String, default: 'var(--u-type-primary)' },
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/** 关闭时的颜色 */
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inactiveColor: { type: String, default: 'var(--u-white-color)' },
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/** v-model 绑定值，开关状态值 */
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modelValue: { type: [Number, String, Boolean] as PropType<number | string | boolean>, default: false },
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/** 是否开启轻微震动反馈 */
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vibrateShort: { type: Boolean, default: false },
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/** 打开时的值 */
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activeValue: { type: [Number, String, Boolean] as PropType<number | string | boolean>, default: true },
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/** 关闭时的值 */
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inactiveValue: { type: [Number, String, Boolean] as PropType<number | string | boolean>, default: false }
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};
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export type SwitchProps = ExtractPropTypes<typeof SwitchProps>;
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<template>
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<view
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class="u-switch"
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:class="[isChecked ? 'u-switch--on' : '', disabled ? 'u-switch--disabled' : '', customClass]"
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@tap="onClick"
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:style="$u.toStyle(switchStyle, customStyle)"
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>
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<view
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class="u-switch__node node-class"
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:style="{
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width: currentSize,
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height: currentSize
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}"
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>
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<u-loading :show="loading" class="u-switch__loading" :size="loadingSize" :color="loadingColor" />
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</view>
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</view>
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</template>
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<script lang="ts">
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export default {
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name: 'u-switch',
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options: {
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addGlobalClass: true,
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// #ifndef MP-TOUTIAO
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virtualHost: true,
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// #endif
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styleIsolation: 'shared'
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}
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};
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</script>
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<script setup lang="ts">
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import { computed, nextTick } from 'vue';
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import { $u, useChildren } from '../..';
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import { SwitchProps } from './types';
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import type { SizeType } from '../../types/global';
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import uLoading from '../u-loading/u-loading.vue';
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/**
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* switch 开关选择器
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* @description 选择开关一般用于只有两个选择，且只能选其一的场景。
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* @tutorial https://uviewpro.cn/zh/components/switch.html
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* @property {Boolean} loading 是否处于加载中（默认false）
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* @property {Boolean} disabled 是否禁用（默认false）
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* @property {String|Number} size 开关尺寸，单位rpx（默认50）
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* @property {String} active-color 打开时的背景色（默认主题色primary）
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* @property {String} inactive-color 关闭时的背景色（默认var(--u-bg-white)）
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* @property {Boolean|Number|String} active-value 打开选择器时通过change事件发出的值（默认true）
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* @property {Boolean|Number|String} inactive-value 关闭选择器时通过change事件发出的值（默认false）
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* @event {Function} change 在switch打开或关闭时触发
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* @example <u-switch v-model="checked" active-color="red" inactive-color="var(--u-divider-color)"></u-switch>
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*/
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const props = defineProps(SwitchProps);
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const emit = defineEmits(['update:modelValue', 'change']);
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const { parentExposed } = useChildren('u-switch', 'u-form');
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// 根据 size 定义不同的配置
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const sizeConfig = {
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small: {
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size: 40
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},
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default: {
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size: 50
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},
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large: {
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size: 60
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}
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};
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// 获取实际使用的 size 值（优先级：props.size > u-form.size）
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const actualSize = computed(() => {
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// 优先使用 props 的 size 属性
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if (props.size !== '') {
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return String(props.size);
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}
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// 次优先：使用 u-form 的 size 属性
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if (parentExposed.value?.props?.size) {
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return String(parentExposed.value.props.size);
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}
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// 默认值
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return 'default';
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});
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// 判断实际使用的 size 是否在预设配置中
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const isInSizeConfig = computed(() => actualSize.value in sizeConfig);
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// 获取预设 size（用于查找 sizeConfig 配置，如图标大小、高度等）
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const presetSize = computed(() => {
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return (isInSizeConfig.value ? actualSize.value : 'default') as SizeType;
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});
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// 获取当前尺寸配置
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const currentSizeConfig = computed(() => sizeConfig[presetSize.value]);
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// 获取实际要使用的 size（如果是预设值使用配置值，否则作为自定义值处理）
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const currentSize = computed(() => {
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if (isInSizeConfig.value) {
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return $u.addUnit(currentSizeConfig.value.size);
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}
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// 自定义size值，直接作为fontSize处理
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return $u.addUnit(actualSize.value);
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});
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// 加载动画尺寸，取当前size的60%
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const loadingSize = computed(() => {
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const sizeNum = Number(currentSize.value.replace('rpx', ''));
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return sizeNum * 0.6;
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});
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/**
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* 计算属性：是否处于激活状态
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* 通过比较modelValue和activeValue来确定开关的真实状态
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*/
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const isChecked = computed(() => {
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return props.modelValue === props.activeValue;
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});
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/**
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* 计算开关样式
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*/
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const switchStyle = computed(() => {
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let style: Record<string, string> = {};
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style.fontSize = currentSize.value;
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style.backgroundColor = isChecked.value ? props.activeColor : props.inactiveColor;
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return style;
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});
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/**
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* 计算加载动画颜色
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*/
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const loadingColor = computed(() => {
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return isChecked.value ? props.activeColor : undefined;
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});
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/**
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* 点击开关
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*/
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function onClick() {
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if (!props.disabled && !props.loading) {
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// 使手机产生短促震动，微信小程序有效，APP(HX 2.6.8)和H5无效
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if (props.vibrateShort) uni.vibrateShort();
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// 根据当前状态切换到另一个值
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const newValue = isChecked.value ? props.inactiveValue : props.activeValue;
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emit('update:modelValue', newValue);
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// 放到下一个生命周期，因为双向绑定的value修改父组件状态需要时间，且是异步的
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nextTick(() => {
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emit('change', newValue);
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});
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}
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}
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</script>
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<style lang="scss" scoped>
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@import '../../libs/css/style.components.scss';
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.u-switch {
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position: relative;
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/* #ifndef APP-NVUE */
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display: inline-block;
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/* #endif */
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box-sizing: initial;
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width: 2em;
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height: 1em;
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background-color: var(--u-bg-white);
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border: 1px solid rgba(0, 0, 0, 0.1);
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border-radius: 1em;
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transition: background-color 0.3s;
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font-size: 50rpx;
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}
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.u-switch__node {
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@include vue-flex;
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align-items: center;
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justify-content: center;
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position: absolute;
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top: 0;
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left: 0;
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border-radius: 100%;
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z-index: 1;
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background-color: var(--u-bg-white);
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box-shadow:
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0 3px 1px 0 rgba(0, 0, 0, 0.05),
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0 2px 2px 0 rgba(0, 0, 0, 0.1),
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0 3px 3px 0 rgba(0, 0, 0, 0.05);
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transition: transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05);
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transition:
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transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05),
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-webkit-transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05);
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transition: transform cubic-bezier(0.3, 1.05, 0.4, 1.05);
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transition: transform 0.3s cubic-bezier(0.3, 1.05, 0.4, 1.05);
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}
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.u-switch__loading {
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@include vue-flex;
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align-items: center;
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justify-content: center;
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}
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.u-switch--on {
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background-color: $u-type-primary;
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}
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.u-switch--on .u-switch__node {
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transform: translateX(100%);
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}
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.u-switch--disabled {
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opacity: 0.4;
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}
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</style>
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