| <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> |