277 lines
8.2 KiB
Vue
277 lines
8.2 KiB
Vue
<template>
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<view>
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<movable-area
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class="u-swipe-action"
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:style="$u.toStyle({ backgroundColor: props.bgColor }, customStyle)"
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:class="customClass"
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:id="elId"
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>
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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="props.disabled"
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:inertia="true"
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:x="moveX"
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:style="{ width: movableViewWidth ? movableViewWidth : '100%' }"
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>
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<view class="u-swipe-content" @tap.stop="contentClick">
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<slot></slot>
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</view>
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<view
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class="u-swipe-del"
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v-if="showBtn"
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@tap.stop="btnClick(index)"
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:style="btnStyle(item.style)"
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v-for="(item, index) in props.options"
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:key="index"
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>
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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 lang="ts">
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export default {
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name: 'u-swipe-action',
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options: {
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addGlobalClass: true,
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// #ifndef MP-TOUTIAO
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virtualHost: true,
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// #endif
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styleIsolation: 'shared'
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}
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};
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</script>
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<script lang="ts" setup>
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import { ref, computed, watch, nextTick, onMounted } from 'vue';
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import { $u } from '../..';
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import { SwipeActionProps } from './types';
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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://uviewpro.cn/zh/components/swipeAction.html
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* @property {String} bg-color 整个组件背景颜色(默认var(--u-bg-white))
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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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const props = defineProps(SwipeActionProps);
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const emit = defineEmits(['click', 'close', 'content-click', 'open']);
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// 组件内部状态
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const moveX = ref(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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const scrollX = ref(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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const status = ref(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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const movableAreaWidth = ref(0); // 滑动区域
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const elId = ref($u.guid()); // id,用于通知另外组件关闭时的识别
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const showBtn = ref(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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// 计算属性
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const movableViewWidth = computed(() => {
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return movableAreaWidth.value + allBtnWidth.value + 'px';
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});
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const innerBtnWidth = computed(() => {
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// 保证类型安全,btnWidth 转为 number
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return uni.upx2px(Number(props.btnWidth));
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});
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const allBtnWidth = computed(() => {
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return uni.upx2px(Number(props.btnWidth)) * props.options.length;
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});
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const btnStyle = (style: Record<string, any> = {}) => {
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// 按钮样式处理
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style.width = props.btnWidth + 'rpx';
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return style;
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};
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// 监听 show 属性变化,控制展开/收起
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watch(
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() => props.show,
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nVal => {
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if (nVal) {
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open();
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} else {
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close();
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}
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},
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{ immediate: true, deep: true }
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);
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// 生命周期
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onMounted(() => {
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getActionRect();
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});
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/**
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* 点击按钮
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* @param index 当前按钮索引
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*/
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function btnClick(index: number) {
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status.value = 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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emit('click', props.index, index);
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}
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/**
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* movable-view元素移动事件
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*/
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function change(e: { detail: { x: number } }) {
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scrollX.value = e.detail.x;
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}
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/**
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* 关闭按钮状态
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*/
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function close() {
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moveX.value = 0;
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status.value = false;
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}
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/**
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* 打开按钮的状态
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*/
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function open() {
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if (props.disabled) return;
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moveX.value = -allBtnWidth.value;
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status.value = true;
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}
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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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*/
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function touchend() {
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moveX.value = scrollX.value;
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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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// https://uniapp.dcloud.net.cn/tutorial/vue-api.html#componentsolutions
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nextTick(() => {
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if (status.value == 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 (scrollX.value <= -allBtnWidth.value / 4) {
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moveX.value = -allBtnWidth.value; // 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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status.value = true; // 标志当前为展开状态
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emitOpenEvent();
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// 产生震动效果
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if (props.vibrateShort) uni.vibrateShort();
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} else {
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moveX.value = 0; // 如果距离没有按钮宽度的四分之一,自动收起
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status.value = false;
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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 (scrollX.value > (-allBtnWidth.value * 3) / 4) {
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moveX.value = 0;
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nextTick(() => {
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moveX.value = 101;
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});
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status.value = false;
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emitCloseEvent();
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} else {
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moveX.value = -allBtnWidth.value;
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status.value = true;
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emitOpenEvent();
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}
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}
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});
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}
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/**
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* 触发 open 事件
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*/
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function emitOpenEvent() {
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emit('open', props.index);
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}
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/**
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* 触发 close 事件
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*/
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function emitCloseEvent() {
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emit('close', props.index);
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}
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/**
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* 开始触摸
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*/
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function touchstart() {
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// ...可扩展触摸逻辑
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}
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/**
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* 获取滑动区域宽度
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*/
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function getActionRect() {
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$u.getRect('.u-swipe-action').then((res: { width: number }) => {
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// 解决使用u-swipe-action右边会出现一条背景线的bug,增加 1 像素
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movableAreaWidth.value = res.width + 1;
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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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nextTick(() => {
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showBtn.value = true;
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});
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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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*/
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function 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 (status.value == true) {
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status.value = false;
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moveX.value = 0;
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}
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emit('content-click', props.index);
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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: var(--u-white-color);
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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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