272 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			Vue
		
	
	
	
		
		
			
		
	
	
			272 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			Vue
		
	
	
	
|  | <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", | |||
|  | 		props: { | |||
|  | 			// radio的名称
 | |||
|  | 			name: { | |||
|  | 				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 | |||
|  | 				} | |||
|  | 			}; | |||
|  | 		}, | |||
|  | 		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> |