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- <template>
- <view
- class="u-radio"
- @tap.stop="wrapperClickHandler"
- :style="[radioStyle]"
- :class="[`u-radio-label--${parentData.iconPlacement}`, parentData.borderBottom && parentData.placement === 'column' && 'u-border-bottom']"
- >
- <view
- class="u-radio__icon-wrap"
- @tap.stop="iconClickHandler"
- :class="iconClasses"
- :style="[iconWrapStyle]"
- >
- <slot name="icon">
- <u-icon
- class="u-radio__icon-wrap__icon"
- name="checkbox-mark"
- :size="elIconSize"
- :color="elIconColor"
- />
- </slot>
- </view>
- <text
- class="u-radio__text"
- @tap.stop="labelClickHandler"
- :style="{
- color: elDisabled ? elInactiveColor : elLabelColor,
- fontSize: elLabelSize,
- lineHeight: elLabelSize
- }"
- >{{label}}</text>
- </view>
- </template>
- <script>
- import props from './props.js';
- /**
- * radio 单选框
- * @description 单选框用于有一个选择,用户只能选择其中一个的场景。搭配u-radio-group使用
- * @tutorial https://www.uviewui.com/components/radio.html
- * @property {String | Number} name radio的名称
- * @property {String} shape 形状,square为方形,circle为圆型
- * @property {Boolean} disabled 是否禁用
- * @property {String | Boolean} labelDisabled 是否禁止点击提示语选中单选框
- * @property {String} activeColor 选中时的颜色,如设置parent的active-color将失效
- * @property {String} inactiveColor 未选中的颜色
- * @property {String | Number} iconSize 图标大小,单位px
- * @property {String | Number} labelSize label字体大小,单位px
- * @property {String | Number} label label提示文字,因为nvue下,直接slot进来的文字,由于特殊的结构,无法修改样式
- * @property {String | Number} size 整体的大小
- * @property {String} iconColor 图标颜色
- * @property {String} labelColor label的颜色
- * @property {Object} customStyle 组件的样式,对象形式
- *
- * @event {Function} change 某个radio状态发生变化时触发(选中状态)
- * @example <u-radio :labelDisabled="false">门掩黄昏,无计留春住</u-radio>
- */
- export default {
- name: "u-radio",
-
- mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
- data() {
- return {
- checked: false,
- // 当你看到这段代码的时候,
- // 父组件的默认值,因为头条小程序不支持在computed中使用this.parent.shape的形式
- // 故只能使用如此方法
- parentData: {
- iconSize: 12,
- labelDisabled: null,
- disabled: null,
- shape: null,
- activeColor: null,
- inactiveColor: null,
- size: 18,
- value: null,
- iconColor: null,
- placement: 'row',
- borderBottom: false,
- iconPlacement: 'left'
- }
- }
- },
- computed: {
- // 是否禁用,如果父组件u-raios-group禁用的话,将会忽略子组件的配置
- elDisabled() {
- return this.disabled !== '' ? this.disabled : this.parentData.disabled !== null ? this.parentData.disabled : false;
- },
- // 是否禁用label点击
- elLabelDisabled() {
- return this.labelDisabled !== '' ? this.labelDisabled : this.parentData.labelDisabled !== null ? this.parentData.labelDisabled :
- false;
- },
- // 组件尺寸,对应size的值,默认值为21px
- elSize() {
- return this.size ? this.size : (this.parentData.size ? this.parentData.size : 21);
- },
- // 组件的勾选图标的尺寸,默认12px
- elIconSize() {
- return this.iconSize ? this.iconSize : (this.parentData.iconSize ? this.parentData.iconSize : 12);
- },
- // 组件选中激活时的颜色
- elActiveColor() {
- return this.activeColor ? this.activeColor : (this.parentData.activeColor ? this.parentData.activeColor : '#2979ff');
- },
- // 组件选未中激活时的颜色
- elInactiveColor() {
- return this.inactiveColor ? this.inactiveColor : (this.parentData.inactiveColor ? this.parentData.inactiveColor :
- '#c8c9cc');
- },
- // label的颜色
- elLabelColor() {
- return this.labelColor ? this.labelColor : (this.parentData.labelColor ? this.parentData.labelColor : '#606266')
- },
- // 组件的形状
- elShape() {
- return this.shape ? this.shape : (this.parentData.shape ? this.parentData.shape : 'circle');
- },
- // label大小
- elLabelSize() {
- return uni.$u.addUnit(this.labelSize ? this.labelSize : (this.parentData.labelSize ? this.parentData.labelSize :
- '15'))
- },
- elIconColor() {
- const iconColor = this.iconColor ? this.iconColor : (this.parentData.iconColor ? this.parentData.iconColor :
- '#ffffff');
- // 图标的颜色
- if (this.elDisabled) {
- // disabled状态下,已勾选的radio图标改为elInactiveColor
- return this.checked ? this.elInactiveColor : 'transparent'
- } else {
- return this.checked ? iconColor : 'transparent'
- }
- },
- iconClasses() {
- let classes = []
- // 组件的形状
- classes.push('u-radio__icon-wrap--' + this.elShape)
- if (this.elDisabled) {
- classes.push('u-radio__icon-wrap--disabled')
- }
- if (this.checked && this.elDisabled) {
- classes.push('u-radio__icon-wrap--disabled--checked')
- }
- // 支付宝,头条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
- // #ifdef MP-ALIPAY || MP-TOUTIAO
- classes = classes.join(' ')
- // #endif
- return classes
- },
- iconWrapStyle() {
- // radio的整体样式
- const style = {}
- style.backgroundColor = this.checked && !this.elDisabled ? this.elActiveColor : '#ffffff'
- style.borderColor = this.checked && !this.elDisabled ? this.elActiveColor : this.elInactiveColor
- style.width = uni.$u.addUnit(this.elSize)
- style.height = uni.$u.addUnit(this.elSize)
- // 如果是图标在右边的话,移除它的右边距
- if (this.parentData.iconPlacement === 'right') {
- style.marginRight = 0
- }
- return style
- },
- radioStyle() {
- const style = {}
- if(this.parentData.borderBottom && this.parentData.placement === 'row') {
- uni.$u.error('检测到您将borderBottom设置为true,需要同时将u-radio-group的placement设置为column才有效')
- }
- // 当父组件设置了显示下边框并且排列形式为纵向时,给内容和边框之间加上一定间隔
- if(this.parentData.borderBottom && this.parentData.placement === 'column') {
- // ios像素密度高,需要多一点的距离
- style.paddingBottom = uni.$u.os() === 'ios' ? '12px' : '8px'
- }
- return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
- }
- },
- mounted() {
- this.init()
- },
- methods: {
- init() {
- // 支付宝小程序不支持provide/inject,所以使用这个方法获取整个父组件,在created定义,避免循环引用
- this.updateParentData()
- if (!this.parent) {
- uni.$u.error('u-radio必须搭配u-radio-group组件使用')
- }
- // 设置初始化时,是否默认选中的状态
- this.checked = this.name === this.parentData.value
- },
- updateParentData() {
- this.getParentData('u-radio-group')
- },
- // 点击图标
- iconClickHandler(e) {
- this.preventEvent(e)
- // 如果整体被禁用,不允许被点击
- if (!this.elDisabled) {
- this.setRadioCheckedStatus()
- }
- },
- // 横向两端排列时,点击组件即可触发选中事件
- wrapperClickHandler(e) {
- this.parentData.iconPlacement === 'right' && this.iconClickHandler(e)
- },
- // 点击label
- labelClickHandler(e) {
- this.preventEvent(e)
- // 如果按钮整体被禁用或者label被禁用,则不允许点击文字修改状态
- if (!this.elLabelDisabled && !this.elDisabled) {
- this.setRadioCheckedStatus()
- }
- },
- emitEvent() {
- // u-radio的checked不为true时(意味着未选中),才发出事件,避免多次点击触发事件
- if (!this.checked) {
- this.$emit('change', this.name)
- // 尝试调用u-form的验证方法,进行一定延迟,否则微信小程序更新可能会不及时
- this.$nextTick(() => {
- uni.$u.formValidate(this, 'change')
- })
- }
- },
- // 改变组件选中状态
- // 这里的改变的依据是,更改本组件的checked值为true,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checked都设置为false(都被取消选中状态),因而只剩下一个为选中状态
- setRadioCheckedStatus() {
- this.emitEvent()
- // 将本组件标记为选中状态
- this.checked = true
- typeof this.parent.unCheckedOther === 'function' && this.parent.unCheckedOther(this)
- }
- }
- }
- </script>
- <style lang="scss" scoped>
- @import "../../libs/css/components.scss";
- $u-radio-wrap-margin-right:6px !default;
- $u-radio-wrap-font-size:20px !default;
- $u-radio-wrap-border-width:1px !default;
- $u-radio-wrap-border-color: #c8c9cc !default;
- $u-radio-line-height:0 !default;
- $u-radio-circle-border-radius:100% !default;
- $u-radio-square-border-radius:3px !default;
- $u-radio-checked-color:#fff !default;
- $u-radio-checked-background-color:red !default;
- $u-radio-checked-border-color: #2979ff !default;
- $u-radio-disabled-background-color:#ebedf0 !default;
- $u-radio-disabled--checked-color:#c8c9cc !default;
- $u-radio-label-margin-left: 5px !default;
- $u-radio-label-margin-right:12px !default;
- $u-radio-label-color:$u-content-color !default;
- $u-radio-label-font-size:15px !default;
- $u-radio-label-disabled-color:#c8c9cc !default;
-
- .u-radio {
- /* #ifndef APP-NVUE */
- @include flex(row);
- /* #endif */
- overflow: hidden;
- flex-direction: row;
- align-items: center;
- &-label--left {
- flex-direction: row
- }
- &-label--right {
- flex-direction: row-reverse;
- justify-content: space-between
- }
- &__icon-wrap {
- /* #ifndef APP-NVUE */
- box-sizing: border-box;
- // nvue下,border-color过渡有问题
- transition-property: border-color, background-color, color;
- transition-duration: 0.2s;
- /* #endif */
- color: $u-content-color;
- @include flex;
- align-items: center;
- justify-content: center;
- color: transparent;
- text-align: center;
- margin-right: $u-radio-wrap-margin-right;
- font-size: $u-radio-wrap-font-size;
- border-width: $u-radio-wrap-border-width;
- border-color: $u-radio-wrap-border-color;
- border-style: solid;
- /* #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: $u-radio-line-height;
- }
- /* #endif */
- &--circle {
- border-radius: $u-radio-circle-border-radius;
- }
- &--square {
- border-radius: $u-radio-square-border-radius;
- }
- &--checked {
- color: $u-radio-checked-color;
- background-color: $u-radio-checked-background-color;
- border-color: $u-radio-checked-border-color;
- }
- &--disabled {
- background-color: $u-radio-disabled-background-color !important;
- }
- &--disabled--checked {
- color: $u-radio-disabled--checked-color !important;
- }
- }
- &__label {
- /* #ifndef APP-NVUE */
- word-wrap: break-word;
- /* #endif */
- margin-left: $u-radio-label-margin-left;
- margin-right: $u-radio-label-margin-right;
- color: $u-radio-label-color;
- font-size: $u-radio-label-font-size;
- &--disabled {
- color: $u-radio-label-disabled-color;
- }
- }
- }
- </style>
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