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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;
 
- 					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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