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							- <template>
 
- 	<view class="u-radio" :style="[radioStyle]">
 
- 		<view class="u-radio__icon-wrap" @tap="toggle" :class="[iconClass]" :style="[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 />
 
- 		</view>
 
- 	</view>
 
- </template>
 
- <script>
 
- /**
 
-  * 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} 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>
 
-  */
 
- export default {
 
- 	name: "u-radio",
 
- 	emits: ["change"],
 
- 	props: {
 
- 		// radio的名称
 
- 		name: {
 
- 			type: [String, Number],
 
- 			default: ""
 
- 		},
 
- 		// 组件的整体大小
 
- 		size: {
 
- 			type: [String, Number],
 
- 			default: ""
 
- 		},
 
- 		// 形状,square为方形,circle为原型
 
- 		shape: {
 
- 			type: String,
 
- 			default: ""
 
- 		},
 
- 		// 是否禁用
 
- 		disabled: {
 
- 			type: [String, Boolean],
 
- 			default: ""
 
- 		},
 
- 		// 是否禁止点击提示语选中复选框
 
- 		labelDisabled: {
 
- 			type: [String, Boolean],
 
- 			default: ""
 
- 		},
 
- 		// 选中状态下的颜色,如设置此值,将会覆盖parent的activeColor值
 
- 		activeColor: {
 
- 			type: String,
 
- 			default: ""
 
- 		},
 
- 		// 图标的大小,单位rpx
 
- 		iconSize: {
 
- 			type: [String, Number],
 
- 			default: ""
 
- 		},
 
- 		// label的字体大小,rpx单位
 
- 		labelSize: {
 
- 			type: [String, Number],
 
- 			default: ""
 
- 		}
 
- 	},
 
- 	data() {
 
- 		return {
 
- 			// 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: null,
 
- 				labelDisabled: null,
 
- 				disabled: null,
 
- 				shape: null,
 
- 				activeColor: null,
 
- 				size: null,
 
- 				width: null,
 
- 				height: null,
 
- 				value: null,
 
- 				wrap: null,
 
- 				modelValue: null
 
- 			}
 
- 		};
 
- 	},
 
- 	created() {
 
- 		this.parent = false;
 
- 		// 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();
 
- 		this.parent.children.push(this);
 
- 	},
 
- 	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34rpx
 
- 		elSize() {
 
- 			return this.size ? this.size : this.parentData.size ? this.parentData.size : 34;
 
- 		},
 
- 		// 组件的勾选图标的尺寸,默认20
 
- 		elIconSize() {
 
- 			return this.iconSize? this.iconSize: this.parentData.iconSize? this.parentData.iconSize: 20;
 
- 		},
 
- 		// 组件选中激活时的颜色
 
- 		elActiveColor() {
 
- 			return this.activeColor? this.activeColor: this.parentData.activeColor? this.parentData.activeColor: "primary";
 
- 		},
 
- 		// 组件的形状
 
- 		elShape() {
 
- 			return this.shape ? this.shape : this.parentData.shape ? this.parentData.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
 
- 		iconStyle() {
 
- 			let style = {};
 
- 			if (this.elActiveColor && this.parentData.value === this.name && !this.elDisabled) {
 
- 				style.borderColor = this.elActiveColor;
 
- 				style.backgroundColor = this.elActiveColor;
 
- 			}
 
- 			style.width = this.$u.addUnit(this.elSize);
 
- 			style.height = this.$u.addUnit(this.elSize);
 
- 			return style;
 
- 		},
 
- 		iconColor() {
 
- 			return this.name === this.parentData.value ? "#ffffff" : "transparent";
 
- 		},
 
- 		iconClass() {
 
- 			let classes = [];
 
- 			classes.push("u-radio__icon-wrap--" + this.elShape);
 
- 			if (this.name === this.parentData.value) classes.push("u-radio__icon-wrap--checked");
 
- 			if (this.elDisabled) classes.push("u-radio__icon-wrap--disabled");
 
- 			if (this.name === this.parentData.value && this.elDisabled)
 
- 				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(" ");
 
- 		},
 
- 		radioStyle() {
 
- 			let style = {};
 
- 			if (this.parentData.width) {
 
- 				style.width = this.$u.addUnit(this.parentData.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 ${this.$u.addUnit(this.parentData.width)}`;
 
- 				// #endif
 
- 			}
 
- 			if (this.parentData.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;
 
- 		}
 
- 	},
 
- 	methods: {
 
- 		updateParentData() {
 
- 			this.getParentData("u-radio-group");
 
- 		},
 
- 		onClickLabel() {
 
- 			if (!this.elLabelDisabled && !this.elDisabled) {
 
- 				this.setRadioCheckedStatus();
 
- 			}
 
- 		},
 
- 		toggle() {
 
- 			if (!this.elDisabled) {
 
- 				this.setRadioCheckedStatus();
 
- 			}
 
- 		},
 
- 		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 (this.parentData.value != this.name) this.$emit("change", this.name);
 
- 		},
 
- 		// 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
 
- 		setRadioCheckedStatus() {
 
- 			this.emitEvent();
 
- 			if (this.parent) {
 
- 				this.parent.setValue(this.name);
 
- 				this.parentData.value = this.name;
 
- 			}
 
- 		}
 
- 	}
 
- };
 
- </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 #c8c9cc;
 
- 		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: #fff;
 
- 			background-color: #2979ff;
 
- 			border-color: #2979ff;
 
- 		}
 
- 		&--disabled {
 
- 			background-color: #ebedf0;
 
- 			border-color: #c8c9cc;
 
- 		}
 
- 		&--disabled--checked {
 
- 			color: #c8c9cc !important;
 
- 		}
 
- 	}
 
- 	&__label {
 
- 		word-wrap: break-word;
 
- 		margin-left: 10rpx;
 
- 		margin-right: 24rpx;
 
- 		color: $u-content-color;
 
- 		font-size: 30rpx;
 
- 		&--disabled {
 
- 			color: #c8c9cc;
 
- 		}
 
- 	}
 
- }
 
- </style>
 
 
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