<template>
<view class="uni-file-picker">
<view v-if="title" class="uni-file-picker__header">
<text class="file-title">{{ title }}</text>
<text class="file-count">{{ filesList.length }}/{{ limitLength }}</text>
</view>
<upload-image v-if="fileMediatype === 'image' && showType === 'grid'" :readonly="readonly"
:image-styles="imageStyles" :files-list="filesList" :limit="limitLength" :disablePreview="disablePreview"
:delIcon="delIcon" @uploadFiles="uploadFiles" @choose="choose" @delFile="delFile">
<slot>
<view class="is-add">
<view class="icon-add"></view>
<view class="icon-add rotate"></view>
</view>
</slot>
</upload-image>
<upload-file v-if="fileMediatype !== 'image' || showType !== 'grid'" :readonly="readonly"
:list-styles="listStyles" :files-list="filesList" :showType="showType" :delIcon="delIcon"
@uploadFiles="uploadFiles" @choose="choose" @delFile="delFile">
<slot><button type="primary" size="mini">选择文件</button></slot>
</upload-file>
</view>
</template>
<script>
import {
chooseAndUploadFile,
uploadCloudFiles
} from './choose-and-upload-file.js'
import {
get_file_ext,
get_extname,
get_files_and_is_max,
get_file_info,
get_file_data
} from './utils.js'
import uploadImage from './upload-image.vue'
import uploadFile from './upload-file.vue'
let fileInput = null
/**
* FilePicker 文件选择上传
* @description 文件选择上传组件，可以选择图片、视频等任意文件并上传到当前绑定的服务空间
* @tutorial https://ext.dcloud.net.cn/plugin?id=4079
* @property {Object|Array} value 组件数据，通常用来回显 ,类型由return-type属性决定
* @property {Boolean} disabled = [true|false] 组件禁用
* @value true 禁用
* @value false 取消禁用
* @property {Boolean} readonly = [true|false] 组件只读，不可选择，不显示进度，不显示删除按钮
* @value true 只读
* @value false 取消只读
* @property {String} return-type = [array|object] 限制 value 格式，当为 object 时 ，组件只能单选，且会覆盖
* @value array 规定 value 属性的类型为数组
* @value object 规定 value 属性的类型为对象
* @property {Boolean} disable-preview = [true|false] 禁用图片预览，仅 mode:grid 时生效
* @value true 禁用图片预览
* @value false 取消禁用图片预览
* @property {Boolean} del-icon = [true|false] 是否显示删除按钮
* @value true 显示删除按钮
* @value false 不显示删除按钮
* @property {Boolean} auto-upload = [true|false] 是否自动上传，值为true则只触发@select,可自行上传
* @value true 自动上传
* @value false 取消自动上传
* @property {Number|String} limit 最大选择个数 ，h5 会自动忽略多选的部分
* @property {String} title 组件标题，右侧显示上传计数
* @property {String} mode = [list|grid] 选择文件后的文件列表样式
* @value list 列表显示
* @value grid 宫格显示
* @property {String} file-mediatype = [image|video|all] 选择文件类型
* @value image 只选择图片
* @value video 只选择视频
* @value all 选择所有文件
* @property {Array} file-extname 选择文件后缀，根据 file-mediatype 属性而不同
* @property {Object} list-style mode:list 时的样式
* @property {Object} image-styles 选择文件后缀，根据 file-mediatype 属性而不同
* @event {Function} select 选择文件后触发
* @event {Function} progress 文件上传时触发
* @event {Function} success 上传成功触发
* @event {Function} fail 上传失败触发
* @event {Function} delete 文件从列表移除时触发
*/
export default {
name: 'uniFilePicker',
components: {
uploadImage,
uploadFile
},
options: {
virtualHost: true
},
emits: ['select', 'success', 'fail', 'progress', 'delete', 'update:modelValue', 'input'],
props: {
// #ifdef VUE3
modelValue: {
type: [Array, Object],
default () {
return []
}
},
// #endif
// #ifndef VUE3
value: {
type: [Array, Object],
default () {
return []
}
},
// #endif
disabled: {
type: Boolean,
default: false
},
disablePreview: {
type: Boolean,
default: false
},
delIcon: {
type: Boolean,
default: true
},
// 自动上传
autoUpload: {
type: Boolean,
default: true
},
// 最大选择个数 ，h5只能限制单选或是多选
limit: {
type: [Number, String],
default: 9
},
// 列表样式 grid | list | list-card
mode: {
type: String,
default: 'grid'
},
// 选择文件类型 image/video/all
fileMediatype: {
type: String,
default: 'image'
},
// 文件类型筛选
fileExtname: {
type: [Array, String],
default () {
return []
}
},
title: {
type: String,
default: ''
},
listStyles: {
type: Object,
default () {
return {
// 是否显示边框
border: true,
// 是否显示分隔线
dividline: true,
// 线条样式
borderStyle: {}
}
}
},
imageStyles: {
type: Object,
default () {
return {
width: 'auto',
height: 'auto'
}
}
},
readonly: {
type: Boolean,
default: false
},
returnType: {
type: String,
default: 'array'
},
sizeType: {
type: Array,
default () {
return ['original', 'compressed']
}
},
sourceType: {
type: Array,
default () {
return ['album', 'camera']
}
},
provider: {
type: String,
default: '' // 默认上传到 unicloud 内置存储 extStorage 扩展存储
}
},
data() {
return {
files: [],
localValue: []
}
},
watch: {
// #ifndef VUE3
value: {
handler(newVal, oldVal) {
this.setValue(newVal, oldVal)
},
immediate: true
},
// #endif
// #ifdef VUE3
modelValue: {
handler(newVal, oldVal) {
this.setValue(newVal, oldVal)
},
immediate: true
},
// #endif
},
computed: {
filesList() {
let files = []
this.files.forEach(v => {
files.push(v)
})
return files
},
showType() {
if (this.fileMediatype === 'image') {
return this.mode
}
return 'list'
},
limitLength() {
if (this.returnType === 'object') {
return 1
}
if (!this.limit) {
return 1
}
if (this.limit >= 9) {
return 9
}
return this.limit
}
},
created() {
// TODO 兼容不开通服务空间的情况
if (!(uniCloud.config && uniCloud.config.provider)) {
this.noSpace = true
uniCloud.chooseAndUploadFile = chooseAndUploadFile
}
this.form = this.getForm('uniForms')
this.formItem = this.getForm('uniFormsItem')
if (this.form && this.formItem) {
if (this.formItem.name) {
this.rename = this.formItem.name
this.form.inputChildrens.push(this)
}
}
},
methods: {
/**
* 公开用户使用，清空文件
* @param {Object} index
*/
clearFiles(index) {
if (index !== 0 && !index) {
this.files = []
this.$nextTick(() => {
this.setEmit()
})
} else {
this.files.splice(index, 1)
}
this.$nextTick(() => {
this.setEmit()
})
},
/**
* 公开用户使用，继续上传
*/
upload() {
let files = []
this.files.forEach((v, index) => {
if (v.status === 'ready' || v.status === 'error') {
files.push(Object.assign({}, v))
}
})
return this.uploadFiles(files)
},
async setValue(newVal, oldVal) {
const newData = async (v) => {
const reg = /cloud:\/\/([\w.]+\/?)\S*/
let url = ''
if(v.fileID){
url = v.fileID
}else{
url = v.url
}
if (reg.test(url)) {
v.fileID = url
v.url = await this.getTempFileURL(url)
}
if(v.url) v.path = v.url
return v
}
if (this.returnType === 'object') {
if (newVal) {
await newData(newVal)
} else {
newVal = {}
}
} else {
if (!newVal) newVal = []
for(let i =0 ;i < newVal.length ;i++){
let v = newVal[i]
await newData(v)
}
}
this.localValue = newVal
if (this.form && this.formItem &&!this.is_reset) {
this.is_reset = false
this.formItem.setValue(this.localValue)
}
let filesData = Object.keys(newVal).length > 0 ? newVal : [];
this.files = [].concat(filesData)
},
/**
* 选择文件
*/
choose() {
if (this.disabled) return
if (this.files.length >= Number(this.limitLength) && this.showType !== 'grid' && this.returnType ===
'array') {
uni.showToast({
title: `您最多选择 ${this.limitLength} 个文件`,
icon: 'none'
})
return
}
this.chooseFiles()
},
/**
* 选择文件并上传
*/
chooseFiles() {
const _extname = get_extname(this.fileExtname)
// 获取后缀
uniCloud
.chooseAndUploadFile({
type: this.fileMediatype,
compressed: false,
sizeType: this.sizeType,
sourceType: this.sourceType,
// TODO 如果为空，video 有问题
extension: _extname.length > 0 ? _extname : undefined,
count: this.limitLength - this.files.length, //默认9
onChooseFile: this.chooseFileCallback,
onUploadProgress: progressEvent => {
this.setProgress(progressEvent, progressEvent.index)
}
})
.then(result => {
this.setSuccessAndError(result.tempFiles)
})
.catch(err => {
console.log('选择失败', err)
})
},
/**
* 选择文件回调
* @param {Object} res
*/
async chooseFileCallback(res) {
const _extname = get_extname(this.fileExtname)
const is_one = (Number(this.limitLength) === 1 &&
this.disablePreview &&
!this.disabled) ||
this.returnType === 'object'
// 如果这有一个文件 ，需要清空本地缓存数据
if (is_one) {
this.files = []
}
let {
filePaths,
files
} = get_files_and_is_max(res, _extname)
if (!(_extname && _extname.length > 0)) {
filePaths = res.tempFilePaths
files = res.tempFiles
}
let currentData = []
for (let i = 0; i < files.length; i++) {
if (this.limitLength - this.files.length <= 0) break
files[i].uuid = Date.now()
let filedata = await get_file_data(files[i], this.fileMediatype)
filedata.progress = 0
filedata.status = 'ready'
this.files.push(filedata)
currentData.push({
...filedata,
file: files[i]
})
}
this.$emit('select', {
tempFiles: currentData,
tempFilePaths: filePaths
})
res.tempFiles = files
// 停止自动上传
if (!this.autoUpload || this.noSpace) {
res.tempFiles = []
}
res.tempFiles.forEach((fileItem, index) => {
this.provider && (fileItem.provider = this.provider);
const fileNameSplit = fileItem.name.split('.')
const ext = fileNameSplit.pop()
const fileName = fileNameSplit.join('.').replace(/[\s\/\?<>\\:\*\|":]/g, '_')
fileItem.cloudPath = fileName + '_' + Date.now() + '_' + index + '.' + ext
})
},
/**
* 批传
* @param {Object} e
*/
uploadFiles(files) {
files = [].concat(files)
return uploadCloudFiles.call(this, files, 5, res => {
this.setProgress(res, res.index, true)
})
.then(result => {
this.setSuccessAndError(result)
return result;
})
.catch(err => {
console.log(err)
})
},
/**
* 成功或失败
*/
async setSuccessAndError(res, fn) {
let successData = []
let errorData = []
let tempFilePath = []
let errorTempFilePath = []
for (let i = 0; i < res.length; i++) {
const item = res[i]
const index = item.uuid ? this.files.findIndex(p => p.uuid === item.uuid) : item.index
if (index === -1 || !this.files) break
if (item.errMsg === 'request:fail') {
this.files[index].url = item.path
this.files[index].status = 'error'
this.files[index].errMsg = item.errMsg
// this.files[index].progress = -1
errorData.push(this.files[index])
errorTempFilePath.push(this.files[index].url)
} else {
this.files[index].errMsg = ''
this.files[index].fileID = item.url
const reg = /cloud:\/\/([\w.]+\/?)\S*/
if (reg.test(item.url)) {
this.files[index].url = await this.getTempFileURL(item.url)
}else{
this.files[index].url = item.url
}
this.files[index].status = 'success'
this.files[index].progress += 1
successData.push(this.files[index])
tempFilePath.push(this.files[index].fileID)
}
}
if (successData.length > 0) {
this.setEmit()
// 状态改变返回
this.$emit('success', {
tempFiles: this.backObject(successData),
tempFilePaths: tempFilePath
})
}
if (errorData.length > 0) {
this.$emit('fail', {
tempFiles: this.backObject(errorData),
tempFilePaths: errorTempFilePath
})
}
},
/**
* 获取进度
* @param {Object} progressEvent
* @param {Object} index
* @param {Object} type
*/
setProgress(progressEvent, index, type) {
const fileLenth = this.files.length
const percentNum = (index / fileLenth) * 100
const percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total)
let idx = index
if (!type) {
idx = this.files.findIndex(p => p.uuid === progressEvent.tempFile.uuid)
}
if (idx === -1 || !this.files[idx]) return
// fix by mehaotian 100 就会消失，-1 是为了让进度条消失
this.files[idx].progress = percentCompleted - 1
// 上传中
this.$emit('progress', {
index: idx,
progress: parseInt(percentCompleted),
tempFile: this.files[idx]
})
},
/**
* 删除文件
* @param {Object} index
*/
delFile(index) {
this.$emit('delete', {
index,
tempFile: this.files[index],
tempFilePath: this.files[index].url
})
this.files.splice(index, 1)
this.$nextTick(() => {
this.setEmit()
})
},
/**
* 获取文件名和后缀
* @param {Object} name
*/
getFileExt(name) {
const last_len = name.lastIndexOf('.')
const len = name.length
return {
name: name.substring(0, last_len),
ext: name.substring(last_len + 1, len)
}
},
/**
* 处理返回事件
*/
setEmit() {
let data = []
if (this.returnType === 'object') {
data = this.backObject(this.files)[0]
this.localValue = data?data:null
} else {
data = this.backObject(this.files)
if (!this.localValue) {
this.localValue = []
}
this.localValue = [...data]
}
// #ifdef VUE3
this.$emit('update:modelValue', this.localValue)
// #endif
// #ifndef VUE3
this.$emit('input', this.localValue)
// #endif
},
/**
* 处理返回参数
* @param {Object} files
*/
backObject(files) {
let newFilesData = []
files.forEach(v => {
newFilesData.push({
extname: v.extname,
fileType: v.fileType,
image: v.image,
name: v.name,
path: v.path,
size: v.size,
fileID:v.fileID,
url: v.url,
// 修改删除一个文件后不能再上传的bug, #694
uuid: v.uuid,
status: v.status,
cloudPath: v.cloudPath
})
})
return newFilesData
},
async getTempFileURL(fileList) {
fileList = {
fileList: [].concat(fileList)
}
const urls = await uniCloud.getTempFileURL(fileList)
return urls.fileList[0].tempFileURL || ''
},
/**
* 获取父元素实例
*/
getForm(name = 'uniForms') {
let parent = this.$parent;
let parentName = parent.$options.name;
while (parentName !== name) {
parent = parent.$parent;
if (!parent) return false;
parentName = parent.$options.name;
}
return parent;
}
}
}
</script>
<style>
.uni-file-picker {
/* #ifndef APP-NVUE */
box-sizing: border-box;
overflow: hidden;
width: 100%;
/* #endif */
flex: 1;
}
.uni-file-picker__header {
padding-top: 5px;
padding-bottom: 10px;
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
justify-content: space-between;
}
.file-title {
font-size: 14px;
color: #333;
}
.file-count {
font-size: 14px;
color: #999;
}
.is-add {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
align-items: center;
justify-content: center;
}
.icon-add {
width: 50px;
height: 5px;
background-color: #f1f1f1;
border-radius: 2px;
}
.rotate {
position: absolute;
transform: rotate(90deg);
}
</style>