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- <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 {
- display: 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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