mirror of
				https://gitee.com/hhyykk/ipms-sjy.git
				synced 2025-10-31 18:28:43 +08:00 
			
		
		
		
	uni-app引入使用uView
This commit is contained in:
		| @@ -0,0 +1,284 @@ | ||||
| <template> | ||||
| 	<u-popup | ||||
| 		:show="show" | ||||
| 		@close="closeHandler" | ||||
| 	> | ||||
| 		<view class="u-picker"> | ||||
| 			<u-toolbar | ||||
| 				v-if="showToolbar" | ||||
| 				:cancelColor="cancelColor" | ||||
| 				:confirmColor="confirmColor" | ||||
| 				:cancelText="cancelText" | ||||
| 				:confirmText="confirmText" | ||||
| 				:title="title" | ||||
| 				@cancel="cancel" | ||||
| 				@confirm="confirm" | ||||
| 			></u-toolbar> | ||||
| 			<picker-view | ||||
| 				class="u-picker__view" | ||||
| 				:indicatorStyle="`height: ${$u.addUnit(itemHeight)}`" | ||||
| 				:value="innerIndex" | ||||
| 				:immediateChange="immediateChange" | ||||
| 				:style="{ | ||||
| 					height: `${$u.addUnit(visibleItemCount * itemHeight)}` | ||||
| 				}" | ||||
| 				@change="changeHandler" | ||||
| 			> | ||||
| 				<picker-view-column | ||||
| 					v-for="(item, index) in innerColumns" | ||||
| 					:key="index" | ||||
| 					class="u-picker__view__column" | ||||
| 				> | ||||
| 					<text | ||||
| 						v-if="$u.test.array(item)" | ||||
| 						class="u-picker__view__column__item u-line-1" | ||||
| 						v-for="(item1, index1) in item" | ||||
| 						:key="index1" | ||||
| 						:style="{ | ||||
| 							height: $u.addUnit(itemHeight), | ||||
| 							lineHeight: $u.addUnit(itemHeight), | ||||
| 							fontWeight: index1 === innerIndex[index] ? 'bold' : 'normal' | ||||
| 						}" | ||||
| 					>{{ getItemText(item1) }}</text> | ||||
| 				</picker-view-column> | ||||
| 			</picker-view> | ||||
| 			<view | ||||
| 				v-if="loading" | ||||
| 				class="u-picker--loading" | ||||
| 			> | ||||
| 				<u-loading-icon mode="circle"></u-loading-icon> | ||||
| 			</view> | ||||
| 		</view> | ||||
| 	</u-popup> | ||||
| </template> | ||||
|  | ||||
| <script> | ||||
| /** | ||||
|  * u-picker | ||||
|  * @description 选择器 | ||||
|  * @property {Boolean}			show				是否显示picker弹窗(默认 false ) | ||||
|  * @property {Boolean}			showToolbar			是否显示顶部的操作栏(默认 true ) | ||||
|  * @property {String}			title				顶部标题 | ||||
|  * @property {Array}			columns				对象数组,设置每一列的数据 | ||||
|  * @property {Boolean}			loading				是否显示加载中状态(默认 false ) | ||||
|  * @property {String | Number}	itemHeight			各列中,单个选项的高度(默认 44 ) | ||||
|  * @property {String}			cancelText			取消按钮的文字(默认 '取消' ) | ||||
|  * @property {String}			confirmText			确认按钮的文字(默认 '确定' ) | ||||
|  * @property {String}			cancelColor			取消按钮的颜色(默认 '#909193' ) | ||||
|  * @property {String}			confirmColor		确认按钮的颜色(默认 '#3c9cff' ) | ||||
|  * @property {Array}			singleIndex			选择器只有一列时,默认选中项的索引,从0开始(默认 0 ) | ||||
|  * @property {String | Number}	visibleItemCount	每列中可见选项的数量(默认 5 ) | ||||
|  * @property {String}			keyName				选项对象中,需要展示的属性键名(默认 'text' ) | ||||
|  * @property {Boolean}			closeOnClickOverlay	是否允许点击遮罩关闭选择器(默认 false ) | ||||
|  * @property {Array}			defaultIndex		各列的默认索引 | ||||
|  * @property {Boolean}			immediateChange		是否在手指松开时立即触发change事件(默认 false ) | ||||
|  * @event {Function} close		关闭选择器时触发 | ||||
|  * @event {Function} cancel		点击取消按钮触发 | ||||
|  * @event {Function} change		当选择值变化时触发 | ||||
|  * @event {Function} confirm	点击确定按钮,返回当前选择的值 | ||||
|  */ | ||||
| import props from './props.js'; | ||||
| export default { | ||||
| 	name: 'u-picker', | ||||
| 	mixins: [uni.$u.mpMixin, uni.$u.mixin, props], | ||||
| 	data() { | ||||
| 		return { | ||||
| 			// 上一次选择的列索引 | ||||
| 			lastIndex: [], | ||||
| 			// 索引值 ,对应picker-view的value | ||||
| 			innerIndex: [], | ||||
| 			// 各列的值 | ||||
| 			innerColumns: [], | ||||
| 			// 上一次的变化列索引 | ||||
| 			columnIndex: 0, | ||||
| 		} | ||||
| 	}, | ||||
| 	watch: { | ||||
| 		// 监听默认索引的变化,重新设置对应的值 | ||||
| 		defaultIndex: { | ||||
| 			immediate: true, | ||||
| 			handler(n) { | ||||
| 				this.setIndexs(n, true) | ||||
| 			} | ||||
| 		}, | ||||
| 		// 监听columns参数的变化 | ||||
| 		columns: { | ||||
| 			immediate: true, | ||||
| 			handler(n) { | ||||
| 				this.setColumns(n) | ||||
| 			} | ||||
| 		}, | ||||
| 	}, | ||||
| 	methods: { | ||||
| 		// 获取item需要显示的文字,判别为对象还是文本 | ||||
| 		getItemText(item) { | ||||
| 			if (uni.$u.test.object(item)) { | ||||
| 				return item[this.keyName] | ||||
| 			} else { | ||||
| 				return item | ||||
| 			} | ||||
| 		}, | ||||
| 		// 关闭选择器 | ||||
| 		closeHandler() { | ||||
| 			if (this.closeOnClickOverlay) { | ||||
| 				this.$emit('close') | ||||
| 			} | ||||
| 		}, | ||||
| 		// 点击工具栏的取消按钮 | ||||
| 		cancel() { | ||||
| 			this.$emit('cancel') | ||||
| 		}, | ||||
| 		// 点击工具栏的确定按钮 | ||||
| 		confirm() { | ||||
| 			this.$emit('confirm', { | ||||
| 				indexs: this.innerIndex, | ||||
| 				value: this.innerColumns.map((item, index) => item[this.innerIndex[index]]), | ||||
| 				values: this.innerColumns | ||||
| 			}) | ||||
| 		}, | ||||
| 		// 选择器某一列的数据发生变化时触发 | ||||
| 		changeHandler(e) { | ||||
| 			const { | ||||
| 				value | ||||
| 			} = e.detail | ||||
| 			let index = 0, | ||||
| 				columnIndex = 0 | ||||
| 			// 通过对比前后两次的列索引,得出当前变化的是哪一列 | ||||
| 			for (let i = 0; i < value.length; i++) { | ||||
| 				let item = value[i] | ||||
| 				if (item !== (this.lastIndex[i] || 0)) { // 把undefined转为合法假值0 | ||||
| 					// 设置columnIndex为当前变化列的索引 | ||||
| 					columnIndex = i | ||||
| 					// index则为变化列中的变化项的索引 | ||||
| 					index = item | ||||
| 					break // 终止循环,即使少一次循环,也是性能的提升 | ||||
| 				} | ||||
| 			} | ||||
| 			this.columnIndex = columnIndex | ||||
| 			const values = this.innerColumns | ||||
| 			// 将当前的各项变化索引,设置为"上一次"的索引变化值 | ||||
| 			this.setLastIndex(value) | ||||
| 			this.setIndexs(value) | ||||
|  | ||||
| 			this.$emit('change', { | ||||
| 				// #ifndef MP-WEIXIN | ||||
| 				// 微信小程序不能传递this,会因为循环引用而报错 | ||||
| 				picker: this, | ||||
| 				// #endif | ||||
| 				value: this.innerColumns.map((item, index) => item[value[index]]), | ||||
| 				index, | ||||
| 				indexs: value, | ||||
| 				// values为当前变化列的数组内容 | ||||
| 				values, | ||||
| 				columnIndex | ||||
| 			}) | ||||
| 		}, | ||||
| 		// 设置index索引,此方法可被外部调用设置 | ||||
| 		setIndexs(index, setLastIndex) { | ||||
| 			this.innerIndex = uni.$u.deepClone(index) | ||||
| 			if (setLastIndex) { | ||||
| 				this.setLastIndex(index) | ||||
| 			} | ||||
| 		}, | ||||
| 		// 记录上一次的各列索引位置 | ||||
| 		setLastIndex(index) { | ||||
| 			// 当能进入此方法,意味着当前设置的各列默认索引,即为“上一次”的选中值,需要记录,是因为changeHandler中 | ||||
| 			// 需要拿前后的变化值进行对比,得出当前发生改变的是哪一列 | ||||
| 			this.lastIndex = uni.$u.deepClone(index) | ||||
| 		}, | ||||
| 		// 设置对应列选项的所有值 | ||||
| 		setColumnValues(columnIndex, values) { | ||||
| 			// 替换innerColumns数组中columnIndex索引的值为values,使用的是数组的splice方法 | ||||
| 			this.innerColumns.splice(columnIndex, 1, values) | ||||
| 			// 拷贝一份原有的innerIndex做临时变量,将大于当前变化列的所有的列的默认索引设置为0 | ||||
| 			let tmpIndex = uni.$u.deepClone(this.innerIndex) | ||||
| 			for (let i = 0; i < this.innerColumns.length; i++) { | ||||
| 				if (i > this.columnIndex) { | ||||
| 					tmpIndex[i] = 0 | ||||
| 				} | ||||
| 			} | ||||
| 			// 一次性赋值,不能单个修改,否则无效 | ||||
| 			this.setIndexs(tmpIndex) | ||||
| 		}, | ||||
| 		// 获取对应列的所有选项 | ||||
| 		getColumnValues(columnIndex) { | ||||
| 			// 进行同步阻塞,因为外部得到change事件之后,可能需要执行setColumnValues更新列的值 | ||||
| 			// 索引如果在外部change的回调中调用getColumnValues的话,可能无法得到变更后的列值,这里进行一定延时,保证值的准确性 | ||||
| 			(async () => { | ||||
| 				await uni.$u.sleep() | ||||
| 			})() | ||||
| 			return this.innerColumns[columnIndex] | ||||
| 		}, | ||||
| 		// 设置整体各列的columns的值 | ||||
| 		setColumns(columns) { | ||||
| 			this.innerColumns = uni.$u.deepClone(columns) | ||||
| 			// 如果在设置各列数据时,没有被设置默认的各列索引defaultIndex,那么用0去填充它,数组长度为列的数量 | ||||
| 			if (this.innerIndex.length === 0) { | ||||
| 				this.innerIndex = new Array(columns.length).fill(0) | ||||
| 			} | ||||
| 		}, | ||||
| 		// 获取各列选中值对应的索引 | ||||
| 		getIndexs() { | ||||
| 			return this.innerIndex | ||||
| 		}, | ||||
| 		// 获取各列选中的值 | ||||
| 		getValues() { | ||||
| 			// 进行同步阻塞,因为外部得到change事件之后,可能需要执行setColumnValues更新列的值 | ||||
| 			// 索引如果在外部change的回调中调用getValues的话,可能无法得到变更后的列值,这里进行一定延时,保证值的准确性 | ||||
| 			(async () => { | ||||
| 				await uni.$u.sleep() | ||||
| 			})() | ||||
| 			return this.innerColumns.map((item, index) => item[this.innerIndex[index]]) | ||||
| 		} | ||||
| 	}, | ||||
| } | ||||
| </script> | ||||
|  | ||||
| <style lang="scss" scoped> | ||||
| 	@import "../../libs/css/components.scss"; | ||||
|  | ||||
| 	.u-picker { | ||||
| 		position: relative; | ||||
|  | ||||
| 		&__view { | ||||
|  | ||||
| 			&__column { | ||||
| 				@include flex; | ||||
| 				flex: 1; | ||||
| 				justify-content: center; | ||||
|  | ||||
| 				&__item { | ||||
| 					@include flex; | ||||
| 					justify-content: center; | ||||
| 					align-items: center; | ||||
| 					font-size: 16px; | ||||
| 					text-align: center; | ||||
| 					/* #ifndef APP-NVUE */ | ||||
| 					display: block; | ||||
| 					/* #endif */ | ||||
| 					color: $u-main-color; | ||||
|  | ||||
| 					&--disabled { | ||||
| 						/* #ifndef APP-NVUE */ | ||||
| 						cursor: not-allowed; | ||||
| 						/* #endif */ | ||||
| 						opacity: 0.35; | ||||
| 					} | ||||
| 				} | ||||
| 			} | ||||
| 		} | ||||
|  | ||||
| 		&--loading { | ||||
| 			position: absolute; | ||||
| 			top: 0; | ||||
| 			right: 0; | ||||
| 			left: 0; | ||||
| 			bottom: 0; | ||||
| 			@include flex; | ||||
| 			justify-content: center; | ||||
| 			align-items: center; | ||||
| 			background-color: rgba(255, 255, 255, 0.87); | ||||
| 			z-index: 1000; | ||||
| 		} | ||||
| 	} | ||||
| </style> | ||||
		Reference in New Issue
	
	Block a user
	 sfmind
					sfmind