<template>
	<view class="load-more" v-if="loadingType !== -1" :style="{ marginTop: marginTop + 'px' }">
		<view class="loading-img" v-show="loadingType === 1 && showImage">
			<view class="load1">
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
			</view>
			<view class="load2">
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
			</view>
			<view class="load3">
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
				<view :style="{ background: color }"></view>
			</view>
		</view>
		<text class="loading-text" :style="{ color: color }">
			{{ loadingText ? loadingText : loadingType === 0 ? loadingTexts.down : loadingType === 1 ? loadingTexts.refresh : loadingType === 2 ? loadingTexts.noMore : loadingTexts.wrong }}
		</text>
	</view>
</template>

<script>
export default {
	name: 'load-more',
	props: {
		// 上拉的状态：0-loading前；1-loading中；2-没有更多了；3-没有更多了
		loadingType: {
			type: Number,
			default: -1
		},
		loadingText: {
			type: String,
			default: ''
		},
		loadingTexts: {
			type: Object,
			default: () => {
				return {
					down: '上拉显示更多',
					refresh: '正在加载...',
					noMore: '没有更多数据了',
					wrong: '没有更多数据了!'
				};
			}
		},
		showImage: {
			type: Boolean,
			default: true
		},
		color: {
			type: String,
			default: '#777777'
		},
		top: {
			type: Number,
			default: 20
		}
	},
	data() {
		return {
			marginTop: 0
		};
	},
	created() {
		this.marginTop = this.$logic.rpx2px(this.top);
	},
};
</script>

<style>
.load-more {
	display: flex;
	flex-direction: row;
	height: 80upx;
	align-items: center;
	justify-content: center;
}
.loading-img {
	height: 48rpx;
	width: 48rpx;
	margin-right: 20rpx;
}
.loading-text {
	font-size: 30rpx;
	color: #777777;
}

.loading-img > view {
	position: absolute;
}
.load1,
.load2,
.load3 {
	height: 50rpx;
	width: 50rpx;
}
.load2 {
	transform: rotate(30deg);
}

.load3 {
	transform: rotate(60deg);
}

.loading-img > view view {
	width: 12rpx;
	height: 4rpx;
	border-top-left-radius: 1px;
	border-bottom-left-radius: 1px;
	background: #777;
	position: absolute;
	opacity: 0.2;
	transform-origin: 50%;
	-webkit-animation: load 1.56s ease infinite;
}

.loading-img > view view:nth-child(1) {
	transform: rotate(90deg);
	top: 2px;
	left: 9px;
}

.loading-img > view view:nth-child(2) {
	-webkit-transform: rotate(180deg);
	top: 11px;
	right: 0px;
}

.loading-img > view view:nth-child(3) {
	transform: rotate(270deg);
	bottom: 4rpx;
	left: 18rpx;
}

.loading-img > view view:nth-child(4) {
	top: 22rpx;
	left: 0px;
}

.load1 view:nth-child(1) {
	animation-delay: 0s;
}

.load2 view:nth-child(1) {
	animation-delay: 0.13s;
}

.load3 view:nth-child(1) {
	animation-delay: 0.26s;
}

.load1 view:nth-child(2) {
	animation-delay: 0.39s;
}

.load2 view:nth-child(2) {
	animation-delay: 0.52s;
}

.load3 view:nth-child(2) {
	animation-delay: 0.65s;
}

.load1 view:nth-child(3) {
	animation-delay: 0.78s;
}

.load2 view:nth-child(3) {
	animation-delay: 0.91s;
}

.load3 view:nth-child(3) {
	animation-delay: 1.04s;
}

.load1 view:nth-child(4) {
	animation-delay: 1.17s;
}

.load2 view:nth-child(4) {
	animation-delay: 1.3s;
}

.load3 view:nth-child(4) {
	animation-delay: 1.43s;
}

@-webkit-keyframes load {
	0% {
		opacity: 1;
	}
	100% {
		opacity: 0.2;
	}
}
</style>
