| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340 | <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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