<template>
	<view class="uni-table-tr">
		<checkbox-group v-if="selection === 'selection'" class="checkbox" :class="{'tr-table--border':border}" @change="change">
			<label>
				<checkbox value="check" :checked="value" />
			</label>
		</checkbox-group>
		<slot></slot>
	</view>
</template>

<script>
	/**
	 * Tr 表格行组件
	 * @description 表格行组件 仅包含 th,td 组件
	 * @tutorial https://ext.dcloud.net.cn/plugin?id=
	 */
	export default {
		name: 'uniTr',
		options: {
			virtualHost: true
		},
		data() {
			return {
				value: false,
				border: false,
				selection: false,
				widthThArr: []
			};
		},
		created() {
			this.root = this.getTable()
			this.border = this.root.border
			this.selection = this.root.type
			this.root.trChildren.push(this)
			this.root.isNodata()
		},
		mounted() {
			if (this.widthThArr.length > 0) {
				const selectionWidth = this.selection === 'selection' ? 50 : 0
				this.root.minWidth = this.widthThArr.reduce((a, b) => Number(a) + Number(b)) + selectionWidth
			}
		},
		destroyed() {
			const index = this.root.trChildren.findIndex(i => i === this)
			this.root.trChildren.splice(index, 1)
			this.root.isNodata()
		},
		methods: {
			minWidthUpdate(width) {
				this.widthThArr.push(width)
			},
			change(e) {
				this.root.trChildren.forEach((item) => {
					if (item === this) {
						this.root.check(this, e.detail.value.length > 0 ? true : false)
					}
				})
			},
			/**
			 * 获取父元素实例
			 */
			getTable() {
				let parent = this.$parent;
				let parentName = parent.$options.name;
				while (parentName !== 'uniTable') {
					parent = parent.$parent;
					if (!parent) return false;
					parentName = parent.$options.name;
				}
				return parent;
			},
		}
	}
</script>

<style scoped>
	.uni-table-tr {
		display: table-row;
		transition: all .3s;
		box-sizing: border-box;
	}

	.checkbox {
		padding: 12px 8px;
		width: 26px;
		padding-left: 12px;
		display: table-cell;
		vertical-align: middle;
		color: #333;
		font-weight: 500;
		border-bottom: 1px #ddd solid;
		font-size: 14px;
	}

	.tr-table--border {
		border-right: 1px #ddd solid;
	}

	.uni-table-tr ::v-deep .uni-table-th.table--border:last-child {
		border-right: none;
	}

	.uni-table-tr ::v-deep .uni-table-td.table--border:last-child {
		border-right: none;
	}
</style>