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204 lines
5.5 KiB
204 lines
5.5 KiB
<template>
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<view class="u-collapse-item" :style="[itemStyle]">
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<view :hover-stay-time="200" class="u-collapse-head" @tap.stop="headClick" :hover-class="hoverClass" :style="[headStyle]">
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<block v-if="!$slots['title-all']">
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<view v-if="!$slots['title']" class="u-collapse-title u-line-1" :style="[{ textAlign: align ? align : 'left' },
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isShow && activeStyle && !arrow ? activeStyle : '']">
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{{ title }}
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</view>
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<slot v-else name="title" />
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<view class="u-icon-wrap">
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<u-icon v-if="arrow" :color="arrowColor" :class="{ 'u-arrow-down-icon-active': isShow }"
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class="u-arrow-down-icon" name="arrow-down"></u-icon>
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</view>
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</block>
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<slot v-else name="title-all" />
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</view>
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<view class="u-collapse-body" :style="[{
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height: isShow ? height + 'px' : '0'
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}]">
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<view class="u-collapse-content" :id="elId" :style="[bodyStyle]">
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<slot></slot>
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</view>
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</view>
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</view>
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</template>
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<script>
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/**
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* collapseItem 手风琴Item
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* @description 通过折叠面板收纳内容区域（搭配u-collapse使用）
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* @tutorial https://www.uviewui.com/components/collapse.html
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* @property {String} title 面板标题
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* @property {String Number} index 主要用于事件的回调，标识那个Item被点击
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* @property {Boolean} disabled 面板是否可以打开或收起（默认false）
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* @property {Boolean} open 设置某个面板的初始状态是否打开（默认false）
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* @property {String Number} name 唯一标识符，如不设置，默认用当前collapse-item的索引值
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* @property {String} align 标题的对齐方式（默认left）
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* @property {Object} active-style 不显示箭头时，可以添加当前选择的collapse-item活动样式，对象形式
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* @event {Function} change 某个item被打开或者收起时触发
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* @example <u-collapse-item :title="item.head" v-for="(item, index) in itemList" :key="index">{{item.body}}</u-collapse-item>
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*/
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export default {
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name: "u-collapse-item",
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props: {
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// 标题
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title: {
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type: String,
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default: ''
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},
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// 标题的对齐方式
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align: {
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type: String,
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default: 'left'
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},
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// 是否可以点击收起
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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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// collapse显示与否
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open: {
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type: Boolean,
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default: false
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},
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// 唯一标识符
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name: {
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type: [Number, String],
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default: ''
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},
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//活动样式
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activeStyle: {
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type: Object,
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default () {
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return {}
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}
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},
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// 标识当前为第几个
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index: {
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type: [String, Number],
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default: ''
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}
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},
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data() {
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return {
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isShow: false,
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elId: this.$u.guid(),
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height: 0, // body内容的高度
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headStyle: {}, // 头部样式，对象形式
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bodyStyle: {}, // 主体部分样式
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itemStyle: {}, // 每个item的整体样式
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arrowColor: '', // 箭头的颜色
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hoverClass: '', // 头部按下时的效果样式类
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arrow: true, // 是否显示右侧箭头
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};
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},
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watch: {
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open(val) {
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this.isShow = val;
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}
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},
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created() {
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this.parent = false;
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// 获取u-collapse的信息，放在u-collapse是为了方便，不用每个u-collapse-item写一遍
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this.isShow = this.open;
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},
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methods: {
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// 异步获取内容，或者动态修改了内容时，需要重新初始化
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init() {
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this.parent = this.$u.$parent.call(this, 'u-collapse');
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if(this.parent) {
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this.nameSync = this.name ? this.name : this.parent.childrens.length;
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this.parent.childrens.push(this);
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this.headStyle = this.parent.headStyle;
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this.bodyStyle = this.parent.bodyStyle;
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this.arrowColor = this.parent.arrowColor;
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this.hoverClass = this.parent.hoverClass;
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this.arrow = this.parent.arrow;
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this.itemStyle = this.parent.itemStyle;
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}
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this.$nextTick(() => {
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this.queryRect();
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});
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},
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// 点击collapsehead头部
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headClick() {
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if (this.disabled) return;
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if (this.parent && this.parent.accordion == true) {
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this.parent.childrens.map(val => {
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// 自身不设置为false，因为后面有this.isShow = !this.isShow;处理了
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if (this != val) {
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val.isShow = false;
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}
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});
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}
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this.isShow = !this.isShow;
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// 触发本组件的事件
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this.$emit('change', {
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index: this.index,
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show: this.isShow
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})
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// 只有在打开时才发出事件
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if (this.isShow) this.parent && this.parent.onChange();
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this.$forceUpdate();
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},
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// 查询内容高度
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queryRect() {
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// $uGetRect为uView自带的节点查询简化方法，详见文档介绍：https://www.uviewui.com/js/getRect.html
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// 组件内部一般用this.$uGetRect，对外的为this.$u.getRect，二者功能一致，名称不同
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this.$uGetRect('#' + this.elId).then(res => {
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this.height = res.height;
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})
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}
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},
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mounted() {
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this.init();
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}
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};
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</script>
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<style lang="scss" scoped>
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@import "../../libs/css/style.components.scss";
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.u-collapse-head {
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position: relative;
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@include vue-flex;
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justify-content: space-between;
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align-items: center;
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color: $u-main-color;
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font-size: 30rpx;
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line-height: 1;
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padding: 24rpx 0;
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text-align: left;
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}
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.u-collapse-title {
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flex: 1;
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overflow: hidden;
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}
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.u-arrow-down-icon {
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transition: all 0.3s;
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margin-right: 20rpx;
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margin-left: 14rpx;
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}
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.u-arrow-down-icon-active {
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transform: rotate(180deg);
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transform-origin: center center;
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}
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.u-collapse-body {
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overflow: hidden;
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transition: all 0.3s;
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}
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.u-collapse-content {
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overflow: hidden;
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font-size: 28rpx;
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color: $u-tips-color;
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text-align: left;
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}
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</style>
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