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255 lines
6.9 KiB
255 lines
6.9 KiB
<template> |
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<view class=""> |
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<movable-area class="u-swipe-action" :style="{ backgroundColor: bgColor }"> |
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<movable-view |
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class="u-swipe-view" |
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@change="change" |
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@touchend="touchend" |
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@touchstart="touchstart" |
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direction="horizontal" |
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:disabled="disabled" |
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:x="moveX" |
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:style="{ |
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width: movableViewWidth ? movableViewWidth : '100%' |
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}" |
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> |
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<view |
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class="u-swipe-content" |
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@tap.stop="contentClick" |
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> |
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<slot></slot> |
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</view> |
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<view class="u-swipe-del" v-if="showBtn" @tap.stop="btnClick(index)" :style="[btnStyle(item.style)]" v-for="(item, index) in options" :key="index"> |
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<view class="u-btn-text">{{ item.text }}</view> |
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</view> |
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</movable-view> |
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</movable-area> |
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</view> |
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</template> |
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<script> |
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/** |
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* swipeAction 左滑单元格 |
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* @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。 |
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* @tutorial https://www.uviewui.com/components/swipeAction.html |
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* @property {String} bg-color 整个组件背景颜色(默认#ffffff) |
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* @property {Array} options 数组形式,可以配置背景颜色和文字 |
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* @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 |
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* @property {String Number} btn-width 按钮宽度,单位rpx(默认180) |
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* @property {Boolean} disabled 是否禁止某个swipeAction滑动(默认false) |
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* @property {Boolean} show 打开或者关闭某个组件(默认false) |
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* @event {Function} click 点击组件时触发 |
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* @event {Function} close 组件触发关闭状态时 |
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* @event {Function} content-click 点击内容时触发 |
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* @event {Function} open 组件触发打开状态时 |
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* @example <u-swipe-action btn-text="收藏">...</u-swipe-action> |
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*/ |
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export default { |
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name: 'u-swipe-action', |
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props: { |
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// index值,用于得知点击删除的是哪个按钮 |
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index: { |
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type: [Number, String], |
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default: '' |
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}, |
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// 滑动按钮的宽度,单位为rpx |
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btnWidth: { |
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type: [String, Number], |
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default: 180 |
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}, |
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// 是否禁止某个action滑动 |
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disabled: { |
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type: Boolean, |
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default: false |
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}, |
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// 打开或者关闭组件 |
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show: { |
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type: Boolean, |
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default: false |
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}, |
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// 组件背景颜色 |
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bgColor: { |
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type: String, |
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default: '#ffffff' |
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}, |
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// 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) |
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vibrateShort: { |
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type: Boolean, |
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default: false |
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}, |
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// 按钮操作参数 |
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options: { |
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type: Array, |
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default() { |
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return []; |
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} |
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} |
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}, |
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watch: { |
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show: { |
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immediate: true, |
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handler(nVal, oVal) { |
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if (nVal) { |
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this.open(); |
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} else { |
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this.close(); |
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} |
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} |
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} |
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}, |
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data() { |
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return { |
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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 |
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scrollX: 0, // movable-view移动过程中产生的change事件中的x轴移动值 |
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status: false, // 滑动的状态,表示当前是展开还是关闭按钮的状态 |
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movableAreaWidth: 0, // 滑动区域 |
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elId: this.$u.guid(), // id,用于通知另外组件关闭时的识别 |
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showBtn: false, // 刚开始渲染视图时不显示右边的按钮,避免视图闪动 |
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}; |
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}, |
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computed: { |
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movableViewWidth() { |
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return this.movableAreaWidth + this.allBtnWidth + 'px'; |
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}, |
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innerBtnWidth() { |
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return uni.upx2px(this.btnWidth); |
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}, |
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allBtnWidth() { |
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return uni.upx2px(this.btnWidth) * this.options.length; |
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}, |
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btnStyle() { |
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return style => { |
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let css = {}; |
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style.width = this.btnWidth + 'rpx'; |
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return style; |
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}; |
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} |
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}, |
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mounted() { |
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this.getActionRect(); |
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}, |
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methods: { |
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// 点击按钮 |
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btnClick(index) { |
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this.status = false; |
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// 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) |
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this.$emit('click', this.index, index); |
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}, |
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// movable-view元素移动事件 |
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change(e) { |
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this.scrollX = e.detail.x; |
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}, |
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// 关闭按钮状态 |
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close() { |
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this.moveX = 0; |
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this.status = false; |
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}, |
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// 打开按钮的状态 |
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open() { |
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if (this.disabled) return; |
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this.moveX = -this.allBtnWidth; |
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this.status = true; |
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}, |
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// 用户手指离开movable-view元素,停止触摸 |
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touchend() { |
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this.moveX = this.scrollX; |
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// 停止触摸时候,判断当前是展开还是关闭状态 |
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// 关闭状态 |
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// 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 |
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// 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: |
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// https://uniapp.dcloud.io/use?id=%e5%b8%b8%e8%a7%81%e9%97%ae%e9%a2%98 |
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this.$nextTick(function() { |
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if (this.status == false) { |
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// 关闭状态左滑,产生的x轴位移为负值,也就是说滑动的距离大于按钮的四分之一宽度,自动展开按钮 |
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if (this.scrollX <= -this.allBtnWidth / 4) { |
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this.moveX = -this.allBtnWidth; // 按钮宽度的负值,即为展开状态movable-view元素左滑的距离 |
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this.status = true; // 标志当前为展开状态 |
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this.emitOpenEvent(); |
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// 产生震动效果 |
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if (this.vibrateShort) uni.vibrateShort(); |
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} else { |
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this.moveX = 0; // 如果距离没有按钮宽度的四分之一,自动收起 |
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this.status = false; |
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this.emitCloseEvent(); |
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} |
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} else { |
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// 如果在打开的状态下,右滑动的距离X轴偏移超过按钮的四分之一(负值反过来的四分之三),自动收起按钮 |
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if (this.scrollX > (-this.allBtnWidth * 3) / 4) { |
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this.moveX = 0; |
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this.$nextTick(() => { |
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this.moveX = 101; |
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}); |
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this.status = false; |
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this.emitCloseEvent(); |
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} else { |
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this.moveX = -this.allBtnWidth; |
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this.status = true; |
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this.emitOpenEvent(); |
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} |
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} |
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}); |
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}, |
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emitOpenEvent() { |
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this.$emit('open', this.index); |
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}, |
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emitCloseEvent() { |
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this.$emit('close', this.index); |
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}, |
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// 开始触摸 |
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touchstart() {}, |
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getActionRect() { |
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this.$uGetRect('.u-swipe-action').then(res => { |
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this.movableAreaWidth = res.width; |
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// 等视图更新完后,再显示右边的可滑动按钮,防止这些按钮会"闪一下" |
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this.$nextTick(() => { |
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this.showBtn = true; |
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}) |
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}); |
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}, |
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// 点击内容触发事件 |
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contentClick() { |
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// 点击内容时,如果当前为打开状态,收起组件 |
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if (this.status == true) { |
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this.status = 'close'; |
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this.moveX = 0; |
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} |
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this.$emit('content-click', this.index); |
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} |
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} |
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}; |
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</script> |
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<style scoped lang="scss"> |
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@import "../../libs/css/style.components.scss"; |
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.u-swipe-action { |
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width: auto; |
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height: initial; |
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position: relative; |
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overflow: hidden; |
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} |
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.u-swipe-view { |
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@include vue-flex; |
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height: initial; |
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position: relative; |
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/* 这一句很关键,覆盖默认的绝对定位 */ |
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} |
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.u-swipe-content { |
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flex: 1; |
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} |
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.u-swipe-del { |
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position: relative; |
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font-size: 30rpx; |
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color: #ffffff; |
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} |
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.u-btn-text { |
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position: absolute; |
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top: 50%; |
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left: 50%; |
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transform: translate(-50%, -50%); |
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} |
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</style>
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