109 lines
		
	
	
		
			3.8 KiB
		
	
	
	
		
			Vue
		
	
	
	
		
		
			
		
	
	
			109 lines
		
	
	
		
			3.8 KiB
		
	
	
	
		
			Vue
		
	
	
	
|  | <template> | |||
|  | 	<view | |||
|  | 	    class="u-radio-group" | |||
|  | 	    :class="bemClass" | |||
|  | 	> | |||
|  | 		<slot></slot> | |||
|  | 	</view> | |||
|  | </template> | |||
|  | 
 | |||
|  | <script> | |||
|  | 	import props from './props.js'; | |||
|  | 
 | |||
|  | 	/** | |||
|  | 	 * radioRroup 单选框父组件 | |||
|  | 	 * @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使用 | |||
|  | 	 * @tutorial https://www.uviewui.com/components/radio.html
 | |||
|  | 	 * @property {String | Number | Boolean}	value 			绑定的值 | |||
|  | 	 * @property {Boolean}						disabled		是否禁用所有radio(默认 false ) | |||
|  | 	 * @property {String}						shape			外观形状,shape-方形,circle-圆形(默认 circle ) | |||
|  | 	 * @property {String}						activeColor		选中时的颜色,应用到所有子Radio组件(默认 '#2979ff' ) | |||
|  | 	 * @property {String}						inactiveColor	未选中的颜色 (默认 '#c8c9cc' ) | |||
|  | 	 * @property {String}						name			标识符 | |||
|  | 	 * @property {String | Number}				size			组件整体的大小,单位px(默认 18 ) | |||
|  | 	 * @property {String}						placement		布局方式,row-横向,column-纵向 (默认 'row' ) | |||
|  | 	 * @property {String}						label			文本 | |||
|  | 	 * @property {String}						labelColor		label的颜色 (默认 '#303133' ) | |||
|  | 	 * @property {String | Number}				labelSize		label的字体大小,px单位 (默认 14 ) | |||
|  | 	 * @property {Boolean}						labelDisabled	是否禁止点击文本操作checkbox(默认 false ) | |||
|  | 	 * @property {String}						iconColor		图标颜色 (默认 '#ffffff' ) | |||
|  | 	 * @property {String | Number}				iconSize		图标的大小,单位px (默认 12 ) | |||
|  | 	 * @property {Boolean}						borderBottom	placement为row时,是否显示下边框 (默认 false ) | |||
|  | 	 * @property {String}						iconPlacement	图标与文字的对齐方式 (默认 'left' ) | |||
|  |      * @property {Object}						customStyle		组件的样式,对象形式 | |||
|  | 	 * @event {Function} change 任一个radio状态发生变化时触发 | |||
|  | 	 * @example <u-radio-group v-model="value"></u-radio-group> | |||
|  | 	 */ | |||
|  | 	export default { | |||
|  | 		name: 'u-radio-group', | |||
|  | 		mixins: [uni.$u.mpMixin, uni.$u.mixin,props], | |||
|  | 		computed: { | |||
|  | 			// 这里computed的变量,都是子组件u-radio需要用到的,由于头条小程序的兼容性差异,子组件无法实时监听父组件参数的变化
 | |||
|  | 			// 所以需要手动通知子组件,这里返回一个parentData变量,供watch监听,在其中去通知每一个子组件重新从父组件(u-radio-group)
 | |||
|  | 			// 拉取父组件新的变化后的参数
 | |||
|  | 			parentData() { | |||
|  | 				return [this.value, this.disabled, this.inactiveColor, this.activeColor, this.size, this.labelDisabled, this.shape, | |||
|  | 					this.iconSize, this.borderBottom, this.placement | |||
|  | 				] | |||
|  | 			}, | |||
|  | 			bemClass() { | |||
|  | 				// this.bem为一个computed变量,在mixin中
 | |||
|  | 				return this.bem('radio-group', ['placement']) | |||
|  | 			}, | |||
|  | 		}, | |||
|  | 		watch: { | |||
|  | 			// 当父组件需要子组件需要共享的参数发生了变化,手动通知子组件
 | |||
|  | 			parentData() { | |||
|  | 				if (this.children.length) { | |||
|  | 					this.children.map(child => { | |||
|  | 						// 判断子组件(u-radio)如果有init方法的话,就就执行(执行的结果是子组件重新从父组件拉取了最新的值)
 | |||
|  | 						typeof(child.init) === 'function' && child.init() | |||
|  | 					}) | |||
|  | 				} | |||
|  | 			}, | |||
|  | 		}, | |||
|  | 		data() { | |||
|  | 			return { | |||
|  | 
 | |||
|  | 			} | |||
|  | 		}, | |||
|  | 		created() { | |||
|  | 			this.children = [] | |||
|  | 		}, | |||
|  | 		methods: { | |||
|  | 			// 将其他的radio设置为未选中的状态
 | |||
|  | 			unCheckedOther(childInstance) { | |||
|  | 				this.children.map(child => { | |||
|  | 					// 所有子radio中,被操作组件实例的checked的值无需修改
 | |||
|  | 					if (childInstance !== child) { | |||
|  | 						child.checked = false | |||
|  | 					} | |||
|  | 				}) | |||
|  | 				const { | |||
|  | 					name | |||
|  | 				} = childInstance | |||
|  | 				// 通过emit事件,设置父组件通过v-model双向绑定的值
 | |||
|  | 				this.$emit('input', name) | |||
|  | 				// 发出事件
 | |||
|  | 				this.$emit('change', name) | |||
|  | 			}, | |||
|  | 		} | |||
|  | 	} | |||
|  | </script> | |||
|  | 
 | |||
|  | <style lang="scss" scoped> | |||
|  | 	@import "../../libs/css/components.scss"; | |||
|  | 
 | |||
|  | 	.u-radio-group { | |||
|  | 		flex: 1; | |||
|  | 
 | |||
|  | 		&--row { | |||
|  | 			@include flex; | |||
|  | 		} | |||
|  | 
 | |||
|  | 		&--column { | |||
|  | 			@include flex(column); | |||
|  | 		} | |||
|  | 	} | |||
|  | </style> |