emis-sapp/components/tpx-upload/tpx-upload.vue

<template>
	<view :style="`${customstyle};flex-direction: ${direction};`" class="up-cont">
		
		<view v-for="(item, index) in list" :style="`${compItemstyle}`">
			<view class="cdimg" @click="handleItem(index)">
				<tpx-image v-if="fileType==fileTypeEnum.image" :src="item" :height="height" :width="width"></tpx-image>
				<video v-if="fileType==fileTypeEnum.video" :src="item"></video>
				<view v-if="fileType==fileTypeEnum.all">{{item}}</view>
				
				<view v-if="!disabled" @click.stop="handleDel(index)" class="delIcon">
					<u-icon name="close-circle-fill" size="32" color=""></u-icon>
				</view>
			</view>
		</view>
		
		<view v-if="list.length < maxLen" style="width: 100%;">
			<view v-if="!isSlot"  @click="handleChooseFile" class="camer-btn" :style="`width:${width}rpx;height:${height}rpx;`">
				<template v-if="btnText">
					<u-icon name="plus" size="40"></u-icon>
					<text class="pt-10">{{btnText}}</text>
				</template>
				<template v-else>
					<view class="">
						<u-icon name="camera" size="50"></u-icon>
					</view>
					<view class="font-22">
						<text>上传</text>
						<text v-if="fileType==fileTypeEnum.image">图片</text>
						<text v-if="fileType==fileTypeEnum.video">视频</text>
						<text v-if="fileType==fileTypeEnum.all">文件</text>
					</view>
				</template >
			</view>
			<view v-if="isSlot" @click="handleChooseFile" style="width: 100%;">
				<slot></slot>
			</view>
		</view>

	</view>
</template>

<script>
	import { coreMultiUploadFile } from "@/common/upload"
	import { showToast } from "@/common/untool"
	
	const fileTypeEnum = {
		all: "all",
		image: "image",
		video: "video",
	}

	export default {
		computed: {
			
			list() {
				let val = this.value
				let res = []
				if (typeof val == "object") {
					res = val
				}
				if (typeof val == 'string' && val !== '') {
					res = val.split(",")
				}
				return res
			},
			compItemstyle(){
				let style =  `margin-bottom: 16rpx;margin-right: 16rpx;`
				if(this.direction == "row") {
					// style += `width:${this.width}rpx;height:${this.height}rpx;`
				}
				return `${this.itemstyle};${style};`
			}
		},
		props: {
			customstyle: {
				default () {
					return ''
				}
			},
			itemstyle: {
				default () {
					return ''
				}
			},
			width: {
				default () {
					return 168
				}
			},
			height: {
				default () {
					return 168
				}
			},
			direction: {
				default () {
					return 'row'
				}
			},
			btnText: {
				default () {
					return ''
				}
			},
			value: {
				default () {
					return ''
				}
			},
			fileType: {
				default () {
					return fileTypeEnum.image
				}
			},
			pickMaxLen: { // 一次最多选择个数
			    default () {
					return 5
			    }
			},
			maxLen: { // 最大个数
			    default () {
					return 1
			    }
			},
			minLen: { // 最小个数
			    default () {
					return 1
				}
			},
			disabled: {
				default () {
					return false
				}
			},
			isSlot: {
				default () {
					return false
				}
			}
		},
		data() {
			return {
				fileTypeEnum: Object.assign({}, fileTypeEnum),
			}
		},
		created() {

		},
		onHide() {

		},
		destroyed() {},

		methods: {
			doChooseFile(opt = {}) {
				const that = this
				const actMap = {
					image: "chooseImage",
					video: "chooseVideo",
				}
				return coreMultiUploadFile(actMap[this.fileType], opt)
			},
			handlePreview(index) {
				uni.previewImage({
					current: index,
					urls: [
						...this.list
					]
				})
			},
			handleDel(index){
				this.list.splice(index, 1)
				this.triggerChanged(this.list)
			},
			handleItem(index) {
				this.handlePreview(index)
			},
			handleChooseFile: function() {
				let that = this
				let { maxLen, pickMaxLen, list } = this
				let count = pickMaxLen
				if (list.length + pickMaxLen > maxLen) {
					count = maxLen - list.length
				}
				if (count <= 0) {
					return showToast(`最多上传${maxLen}个`)
				}
				this.doChooseFile({
					count
				}).then((res) => {
					list = list.concat(res)
					that.triggerChanged(list)
				})
			},
			triggerChanged(list) {
				let val = list
				if(this.maxLen == 1) {
					val = list[0] || ''
				}
				this.$emit('change', val)
				this.$emit('update:value', val)
			}
		}
	}
</script>

<style scoped lang="scss">
	.up-cont{
		width: 100%;
		display: flex;
		flex-wrap: wrap;
	}
	.camer-btn {
		border: 2rpx solid #EFEFEF;
		border-radius: 6rpx;
		background: #F8F8F8;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		margin-bottom: 20rpx;
	}
	.cdimg {
		position: relative;
		.delIcon{
			position: absolute;
			height: 46rpx;
			width: 46rpx;
			right: -10rpx;
			top: -10rpx;
			.u-icon{
				justify-content: end;
			}
		}
	}
</style>