| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255 | <template>	<view class="">		<movable-area class="u-swipe-action" :style="{ backgroundColor: bgColor }">			<movable-view				class="u-swipe-view"				@change="change"				@touchend="touchend"				@touchstart="touchstart"				direction="horizontal"				:disabled="disabled"				:x="moveX"				:style="{					width: movableViewWidth ? movableViewWidth : '100%'				}"			>				<view					class="u-swipe-content"					@tap.stop="contentClick"				>					<slot></slot>				</view>				<view class="u-swipe-del" v-if="showBtn" @tap.stop="btnClick(index)" :style="[btnStyle(item.style)]" v-for="(item, index) in options" :key="index">					<view class="u-btn-text">{{ item.text }}</view>				</view>			</movable-view>		</movable-area>	</view></template><script>/** * swipeAction 左滑单元格 * @description 该组件一般用于左滑唤出操作菜单的场景,用的最多的是左滑删除操作。 * @tutorial https://www.uviewui.com/components/swipeAction.html * @property {String} bg-color 整个组件背景颜色(默认#ffffff) * @property {Array} options 数组形式,可以配置背景颜色和文字 * @property {String Number} index 标识符,点击时候用于区分点击了哪一个,用v-for循环时的index即可 * @property {String Number} btn-width 按钮宽度,单位rpx(默认180) * @property {Boolean} disabled 是否禁止某个swipeAction滑动(默认false) * @property {Boolean} show 打开或者关闭某个组件(默认false) * @event {Function} click 点击组件时触发 * @event {Function} close 组件触发关闭状态时 * @event {Function} content-click 点击内容时触发 * @event {Function} open 组件触发打开状态时 * @example <u-swipe-action btn-text="收藏">...</u-swipe-action> */export default {	name: 'u-swipe-action',	props: {		// index值,用于得知点击删除的是哪个按钮		index: {			type: [Number, String],			default: ''		},		// 滑动按钮的宽度,单位为rpx		btnWidth: {			type: [String, Number],			default: 180		},		// 是否禁止某个action滑动		disabled: {			type: Boolean,			default: false		},		// 打开或者关闭组件		show: {			type: Boolean,			default: false		},		// 组件背景颜色		bgColor: {			type: String,			default: '#ffffff'		},		// 是否使手机发生短促震动,目前只在iOS的微信小程序有效(2020-05-06)		vibrateShort: {			type: Boolean,			default: false		},		// 按钮操作参数		options: {			type: Array,			default() {				return [];			}		}	},	watch: {		show: {			immediate: true,			handler(nVal, oVal) {				if (nVal) {					this.open();				} else {					this.close();				}			}		}	},	data() {		return {			moveX: 0, // movable-view元素在x轴上需要移动的目标移动距离,用于展开或收起滑动的按钮			scrollX: 0, // movable-view移动过程中产生的change事件中的x轴移动值			status: false, // 滑动的状态,表示当前是展开还是关闭按钮的状态			movableAreaWidth: 0, // 滑动区域			elId: this.$u.guid(), // id,用于通知另外组件关闭时的识别			showBtn: false, // 刚开始渲染视图时不显示右边的按钮,避免视图闪动		};	},	computed: {		movableViewWidth() {			return this.movableAreaWidth + this.allBtnWidth + 'px';		},		innerBtnWidth() {			return uni.upx2px(this.btnWidth);		},		allBtnWidth() {			return uni.upx2px(this.btnWidth) * this.options.length;		},		btnStyle() {			return style => {				let css = {};				style.width = this.btnWidth + 'rpx';				return style;			};		}	},	mounted() {		this.getActionRect();	},	methods: {		// 点击按钮		btnClick(index) {			this.status = false;			// this.index为点击的几个组件,index为点击某个组件的第几个按钮(options数组的索引)			this.$emit('click', this.index, index);		},		// movable-view元素移动事件		change(e) {			this.scrollX = e.detail.x;		},		// 关闭按钮状态		close() {			this.moveX = 0;			this.status = false;		},		// 打开按钮的状态		open() {			if (this.disabled) return;			this.moveX = -this.allBtnWidth;			this.status = true;		},		// 用户手指离开movable-view元素,停止触摸		touchend() {			this.moveX = this.scrollX;			// 停止触摸时候,判断当前是展开还是关闭状态			// 关闭状态			// 这一步很重要,需要先给this.moveX一个变化的随机值,否则因为前后设置的为同一个值			// props单向数据流的原因,导致movable-view元素不会发生变化,切记,详见文档:			// https://uniapp.dcloud.io/use?id=%e5%b8%b8%e8%a7%81%e9%97%ae%e9%a2%98			this.$nextTick(function() {				if (this.status == false) {					// 关闭状态左滑,产生的x轴位移为负值,也就是说滑动的距离大于按钮的四分之一宽度,自动展开按钮					if (this.scrollX <= -this.allBtnWidth / 4) {						this.moveX = -this.allBtnWidth; // 按钮宽度的负值,即为展开状态movable-view元素左滑的距离						this.status = true; // 标志当前为展开状态						this.emitOpenEvent();						// 产生震动效果						if (this.vibrateShort) uni.vibrateShort();					} else {						this.moveX = 0; // 如果距离没有按钮宽度的四分之一,自动收起						this.status = false;						this.emitCloseEvent();					}				} else {					// 如果在打开的状态下,右滑动的距离X轴偏移超过按钮的四分之一(负值反过来的四分之三),自动收起按钮					if (this.scrollX > (-this.allBtnWidth * 3) / 4) {						this.moveX = 0;						this.$nextTick(() => {							this.moveX = 101;						});						this.status = false;						this.emitCloseEvent();					} else {						this.moveX = -this.allBtnWidth;						this.status = true;						this.emitOpenEvent();					}				}			});		},		emitOpenEvent() {			this.$emit('open', this.index);		},		emitCloseEvent() {			this.$emit('close', this.index);		},		// 开始触摸		touchstart() {},		getActionRect() {			this.$uGetRect('.u-swipe-action').then(res => {				this.movableAreaWidth = res.width;				// 等视图更新完后,再显示右边的可滑动按钮,防止这些按钮会"闪一下"				this.$nextTick(() => {					this.showBtn = true;				})			});		},		// 点击内容触发事件		contentClick() {			// 点击内容时,如果当前为打开状态,收起组件			if (this.status == true) {				this.status = 'close';				this.moveX = 0;			}			this.$emit('content-click', this.index);		}	}};</script><style scoped lang="scss">@import "../../libs/css/style.components.scss";	.u-swipe-action {	width: auto;	height: initial;	position: relative;	overflow: hidden;}.u-swipe-view {	@include vue-flex;	height: initial;	position: relative;	/* 这一句很关键,覆盖默认的绝对定位 */}.u-swipe-content {	flex: 1;}.u-swipe-del {	position: relative;	font-size: 30rpx;	color: #ffffff;}.u-btn-text {	position: absolute;	top: 50%;	left: 50%;	transform: translate(-50%, -50%);}</style>
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