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