| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337 | <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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