<template>
	<view>
		<scroll-view scroll-x class='tab-list' :scroll-into-view="'tab'+(activeIndex-1)" :scroll-with-animation="true"
			:style="{background:  bgColor}">
			<view class='tab-item text-bold rel' v-for="(item,index) in list" :key="index"
				@tap='handerTabChange(index)' :id="'tab'+index"
				:style="{width:width,height:height,lineHeight:height,color:index==activeIndex? activeColor : color,fontSize:fontSize}">
				{{item.title || item}}
				<view class="abs line" :style="{background: activeColor}" v-if="index==activeIndex && haveLine"></view>
				<view v-if="item.number" class="item-msg c-base f-icontext abs"
					:style="{width: item.number<10 ? '30rpx' : '50rpx',right: msgRight }">
					{{item.number < 100 ? item.number : '99+'}}
				</view>
			</view>
		</scroll-view>
	</view>
</template>

<script>
	export default {
		name: 'tab',
		props: {
			list: {
				type: Array,
				default () {
					return []
				}
			},
			activeIndex: {
				type: Number || String,
				default () {
					return 0
				}
			},
			color: {
				type: String,
				default () {
					return '#333'
				}
			},
			activeColor: {
				type: String,
				default () {
					return '#e73535'
				}
			},
			bgColor: {
				type: String,
				default () {
					return '#fff'
				}
			},
			width: {
				type: String,
				default () {
					return ''
				}
			},
			height: {
				type: String,
				default () {
					return ''
				}
			},
			haveLine: {
				type: Boolean,
				default () {
					return true
				}
			},
			msgRight: {
				type: String,
				default () {
					return '5rpx'
				}
			},
			fontSize: {
				type: String,
				default () {
					return '28rpx'
				}
			}
		},
		created() {

		},
		data() {
			return {

			}
		},
		methods: {
			handerTabChange(index) {
				this.$emit('change', index);
			}
		},
	}
</script>

<style lang="scss">
	.tab-list {
		white-space: nowrap;
		width: 100%;
	}

	.tab-item {
		display: inline-block;
		text-align: center;
		line-height: 100rpx;
		padding: 0 20rpx;
		border-color: #fff;
		box-sizing: border-box;

		.line {
			width: 80rpx;
			height: 6rpx;
			border-radius: 6rpx;
			left: 50%;
			bottom: 0rpx;
			margin-left: -40rpx;
		}
	}

	.item-msg {
		width: 30rpx;
		height: 30rpx;
		line-height: 30rpx;
		border-radius: 15rpx 15rpx 15rpx 0;
		background: #f12c20;
		top: 5rpx;
	}
</style>
