591 lines
20 KiB
Vue
591 lines
20 KiB
Vue
<script setup lang="ts">
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import {computed, ref, watchEffect} from 'vue';
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// import Spin from '../Spin/Spin.vue';
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// import Message from '../Message/Message.vue';
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// import Image from '../Image/Image.vue';
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// import Space from '../Space/Space.vue';
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interface FileType {
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name?: string // 文件名
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url: any // 文件地址
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[propName: string]: any // 添加一个字符串索引签名，用于包含带有任意数量的其他属性
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}
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interface MessageType {
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upload?: string // 上传成功的消息提示，没有设置该属性时即不显示上传消息提示
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remove?: string // 删除成功的消息提示，没有设置该属性时即不显示删除消息提示
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}
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interface Props {
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accept?: string // 接受上传的文件类型，与 <input type="file" /> 的 accept 属性一致，参考 https://developer.mozilla.org/zh-CN/docs/Web/HTML/Attributes/accept
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multiple?: boolean // 是否支持多选文件，开启后可选择多个文件
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maxCount?: number // 限制上传数量。当为 1 时，始终用最新上传的文件代替当前文件
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tip?: string // 上传描述文字 string | slot
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fit?: 'contain' | 'fill' | 'cover' | 'none' | 'scale-down' // 预览图片缩放规则，仅当上传文件为图片时生效
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draggable?: boolean // 是否支持拖拽上传，开启后可拖拽文件到选择框上传
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disabled?: boolean // 是否禁用，只能预览，不能删除和上传
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spaceProps?: object // Space 组件属性配置，用于配置多个文件时的排列方式
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spinProps?: object // Spin 组件属性配置，用于配置上传中样式
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imageProps?: object // Image 组件属性配置，用于配置图片预览
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messageProps?: object // Message 组件属性配置，用于配置操作消息提示
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actionMessage?: MessageType // 操作完成的消息提示，传 {} 即可不显示任何消息提示
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beforeUpload?: any // 上传文件之前的钩子，参数为上传的文件，返回 false 则停止上传，返回 true 开始上传；支持返回一个 Promise 对象（如服务端校验等），Promise 对象 reject 时停止上传，resolve 时开始上传；通常用来校验用户上传的文件格式和大小
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uploadMode?: 'base64' | 'custom' // 上传文件的方式，默认是 base64，可选 'base64' | 'custom'
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customRequest?: any // 自定义上传行为，只有 uploadMode: custom 时，才会使用 customRequest 自定义上传行为
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fileList?: FileType[] // (v-model) 已上传的文件列表
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}
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const props = withDefaults(defineProps<Props>(), {
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accept: '*', // 默认支持所有类型
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multiple: false,
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maxCount: undefined,
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tip: 'ImageUpload',
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fit: 'contain',
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draggable: true,
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disabled: false,
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spaceProps: () => ({}),
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spinProps: () => ({}),
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imageProps: () => ({}),
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messageProps: () => ({}),
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actionMessage: () => ({upload: '上传成功', remove: '删除成功'}),
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beforeUpload: () => true,
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uploadMode: 'base64',
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customRequest: () => {
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},
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fileList: () => []
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});
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const uploadedFiles = ref<FileType[]>([]); // 上传文件列表
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const showUpload = ref(1); // 展示的上传框
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const uploading = ref<boolean[]>([]); // 上传中
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const uploadInputRef = ref(); // 上传文件控件引用
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const imageRef = ref();
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const messageRef = ref();
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const emits = defineEmits(['update:fileList', 'drop', 'change', 'preview', 'remove']);
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const maxFileCount = computed(() => {
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if (props.maxCount === undefined) {
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return Infinity;
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}
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return props.maxCount;
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});
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watchEffect(() => {
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initUpload();
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});
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function initUpload() {
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uploadedFiles.value = [...props.fileList];
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if (uploadedFiles.value.length > maxFileCount.value) {
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uploadedFiles.value.splice(maxFileCount.value);
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}
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if (props.disabled) {
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// 禁用
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showUpload.value = uploadedFiles.value.length;
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} else {
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if (uploadedFiles.value.length < maxFileCount.value) {
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showUpload.value = props.fileList.length + 1;
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} else {
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showUpload.value = maxFileCount.value;
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}
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}
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}
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function isImage(url: string) {
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// 检查 url 是否为图片
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const imageUrlReg = /\.(jpg|jpeg|png|gif)$/i;
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const base64Reg = /^data:image/;
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return imageUrlReg.test(url) || base64Reg.test(url);
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}
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function isPDF(url: string) {
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// 检查 url 是否为pdf
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const pdfUrlReg = /\.pdf$/i;
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const base64Reg = /^data:application\/pdf/;
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return pdfUrlReg.test(url) || base64Reg.test(url);
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}
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function onDrop(e: DragEvent, index: number) {
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// 拖拽上传
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const files = e.dataTransfer?.files;
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if (files?.length) {
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const len = files.length;
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for (let n = 0; n < len; n++) {
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if (index + n <= maxFileCount.value) {
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uploadFile(files[n], index + n);
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} else {
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break;
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}
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}
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// input的change事件默认保存上一次input的value值，同一value值(根据文件路径判断)在上传时不重新加载
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uploadInputRef.value[index].value = '';
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}
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emits('drop', e);
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}
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function onClickFileInput(index: number) {
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uploadInputRef.value[index].click();
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}
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function onUpload(e: any, index: number) {
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// 点击上传
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const files = e.target.files;
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if (files?.length) {
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const len = files.length;
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for (let n = 0; n < len; n++) {
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if (index + n < maxFileCount.value) {
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uploadFile(files[n], index + n);
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} else {
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break;
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}
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}
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// input的change事件默认保存上一次input的value值，同一value值(根据文件路径判断)在上传时不重新加载
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uploadInputRef.value[index].value = '';
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}
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}
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const uploadFile = async (file: File, index: number) => {
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// 统一上传文件方法
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// console.log('开始上传 upload-event files:', file)
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const promiseFunction = () => {
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return new Promise((resolve, reject) => {
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try {
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// 尝试执行传入的函数，并获取返回值
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const result = props.beforeUpload(file);
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// 检查返回值是否是 Promise
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if (result instanceof Promise) {
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// 如果是 Promise，则等待其 resolve 或 reject
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result.then(resolve, reject);
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} else {
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// 检查返回值是否为布尔值
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if (typeof result === 'boolean') {
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// 如果是布尔值，根据值resolve或reject
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if (result) {
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resolve(result);
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} else {
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reject(new Error('Function returned false'));
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}
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// result ? resolve(result) : reject(new Error('Function returned false'));
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} else {
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// 否则，直接resolve返回值
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resolve(result);
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}
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}
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} catch (error) {
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// 如果执行过程中抛出错误，则 reject 错误
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reject(error);
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}
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});
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};
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promiseFunction()
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.then(() => {
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// 使用用户钩子进行上传前文件判断，例如大小、类型限制
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if (maxFileCount.value > showUpload.value) {
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showUpload.value++;
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}
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if (props.uploadMode === 'base64') {
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// 以base64方式读取文件
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uploading.value[index] = true;
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base64Upload(file, index);
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}
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if (props.uploadMode === 'custom') {
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// 自定义上传行为，需配合 customRequest 属性
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uploading.value[index] = true;
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customUpload(file, index);
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}
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})
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.catch((error: any) => {
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console.log('beforeUpload error:', error);
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});
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};
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function base64Upload(file: File, index: number) {
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var reader = new FileReader();
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reader.readAsDataURL(file); // 以base64方式读取文件
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reader.onloadstart = function (_e) {
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// 当读取操作开始时触发
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// reader.abort() // 取消上传
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// console.log('开始读取 onloadstart:', e)
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};
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reader.onabort = function (_e) {
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// 当读取操作被中断时触发
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// console.log('读取中止 onabort:', e)
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};
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reader.onerror = function (_e) {
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// 当读取操作发生错误时触发
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// console.log('读取错误 onerror:', e)
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};
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reader.onprogress = function (e) {
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// 在读取Blob时触发，读取上传进度，50ms左右调用一次
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// console.log('读取中 onprogress:', e)
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// console.log('已读取:', Math.ceil(e.loaded / e.total * 100))
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if (e.loaded === e.total) {
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// 上传完成
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uploading.value[index] = false; // 隐藏loading状态
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}
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};
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reader.onload = function (e) {
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// 当读取操作成功完成时调用
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// console.log('读取成功 onload:', e)
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// 该文件的base64数据，如果是图片，则前端可直接用来展示图片
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uploadedFiles.value.push({
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name: file.name,
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url: e.target?.result
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});
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if (props.actionMessage.upload) {
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messageRef.value.success(props.actionMessage.upload);
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}
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emits('update:fileList', uploadedFiles.value);
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emits('change', uploadedFiles.value);
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};
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reader.onloadend = function (_e) {
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// 当读取操作结束时触发（要么成功，要么失败）触发
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// console.log('读取结束 onloadend:', e)
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};
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}
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function customUpload(file: File, index: number) {
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props
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.customRequest(file)
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.then((res: any) => {
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uploadedFiles.value.push(res);
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if (props.actionMessage.upload) {
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messageRef.value.success(props.actionMessage.upload);
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}
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emits('update:fileList', uploadedFiles.value);
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emits('change', uploadedFiles.value);
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})
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.catch((err: any) => {
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if (maxFileCount.value > 1) {
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showUpload.value = uploadedFiles.value.length + 1;
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}
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messageRef.value.error(err);
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})
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.finally(() => {
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uploading.value[index] = false;
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});
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}
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function onPreview(index: number, url: string) {
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if (isImage(url)) {
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const files = uploadedFiles.value.slice(0, index).filter((file) => !isImage(file.url));
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imageRef.value[index - files.length].preview(0);
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} else {
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window.open(url);
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}
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emits('preview', uploadedFiles.value[index]);
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}
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function onRemove(index: number) {
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if (uploadedFiles.value.length < maxFileCount.value) {
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showUpload.value--;
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}
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const removeFile = uploadedFiles.value.splice(index, 1);
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if (props.actionMessage.remove) {
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messageRef.value.success(props.actionMessage.remove);
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}
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emits('remove', removeFile[0]);
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emits('update:fileList', uploadedFiles.value);
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emits('change', uploadedFiles.value);
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}
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function onInfo(content: string) {
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messageRef.value.info(content);
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}
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function onSuccess(content: string) {
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messageRef.value.success(content);
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}
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function onError(content: string) {
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messageRef.value.error(content);
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}
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function onWarning(content: string) {
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messageRef.value.warning(content);
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}
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function onLoading(content: string) {
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messageRef.value.loading(content);
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}
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defineExpose({
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info: onInfo,
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success: onSuccess,
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error: onError,
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warning: onWarning,
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loading: onLoading
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});
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</script>
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<template>
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<div class="m-upload-wrap">
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<Space gap="small" v-bind="spaceProps">
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<div class="m-upload-item" v-for="n of showUpload" :key="n">
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<div class="m-upload">
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<div
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v-show="!uploading[n - 1] && !uploadedFiles[n - 1]"
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class="upload-item"
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:class="{ 'upload-disabled': disabled }"
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@dragenter.stop.prevent
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@dragover.stop.prevent
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@drop.stop.prevent="draggable && !disabled ? onDrop($event, n - 1) : () => false"
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@click="!disabled ? onClickFileInput(n - 1) : () => false"
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>
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<input
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ref="uploadInputRef"
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type="file"
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@click.stop
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:accept="accept"
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:multiple="multiple"
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@change="onUpload($event, n - 1)"
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style="display: none"
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/>
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<div>
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<svg
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focusable="false"
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class="plus-svg"
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data-icon="plus"
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width="1em"
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height="1em"
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fill="currentColor"
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aria-hidden="true"
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viewBox="64 64 896 896"
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>
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<defs></defs>
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<path d="M482 152h60q8 0 8 8v704q0 8-8 8h-60q-8 0-8-8V160q0-8 8-8z"></path>
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<path d="M176 474h672q8 0 8 8v60q0 8-8 8H176q-8 0-8-8v-60q0-8 8-8z"></path>
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</svg>
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<p class="upload-tip">
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<slot>{{ tip }}</slot>
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</p>
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</div>
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</div>
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<div v-show="uploading[n - 1]" class="file-uploading">
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<Spin class="spin-uploading" tip="uploading" size="small" indicator="spin-line" v-bind="spinProps"/>
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</div>
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<div v-if="uploadedFiles[n - 1]" class="file-preview">
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<Image
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v-if="isImage(uploadedFiles[n - 1].url)"
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ref="imageRef"
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:bordered="false"
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:width="82"
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:height="82"
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:fit="fit"
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:src="uploadedFiles[n - 1].url"
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:name="uploadedFiles[n - 1].name"
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v-bind="imageProps"
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/>
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<svg
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v-else-if="isPDF(uploadedFiles[n - 1].url)"
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class="file-svg"
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focusable="false"
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data-icon="file-pdf"
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width="1em"
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height="1em"
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fill="currentColor"
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aria-hidden="true"
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viewBox="64 64 896 896"
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>
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<path
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d="M531.3 574.4l.3-1.4c5.8-23.9 13.1-53.7 7.4-80.7-3.8-21.3-19.5-29.6-32.9-30.2-15.8-.7-29.9 8.3-33.4 21.4-6.6 24-.7 56.8 10.1 98.6-13.6 32.4-35.3 79.5-51.2 107.5-29.6 15.3-69.3 38.9-75.2 68.7-1.2 5.5.2 12.5 3.5 18.8 3.7 7 9.6 12.4 16.5 15 3 1.1 6.6 2 10.8 2 17.6 0 46.1-14.2 84.1-79.4 5.8-1.9 11.8-3.9 17.6-5.9 27.2-9.2 55.4-18.8 80.9-23.1 28.2 15.1 60.3 24.8 82.1 24.8 21.6 0 30.1-12.8 33.3-20.5 5.6-13.5 2.9-30.5-6.2-39.6-13.2-13-45.3-16.4-95.3-10.2-24.6-15-40.7-35.4-52.4-65.8zM421.6 726.3c-13.9 20.2-24.4 30.3-30.1 34.7 6.7-12.3 19.8-25.3 30.1-34.7zm87.6-235.5c5.2 8.9 4.5 35.8.5 49.4-4.9-19.9-5.6-48.1-2.7-51.4.8.1 1.5.7 2.2 2zm-1.6 120.5c10.7 18.5 24.2 34.4 39.1 46.2-21.6 4.9-41.3 13-58.9 20.2-4.2 1.7-8.3 3.4-12.3 5 13.3-24.1 24.4-51.4 32.1-71.4zm155.6 65.5c.1.2.2.5-.4.9h-.2l-.2.3c-.8.5-9 5.3-44.3-8.6 40.6-1.9 45 7.3 45.1 7.4zm191.4-388.2L639.4 73.4c-6-6-14.1-9.4-22.6-9.4H192c-17.7 0-32 14.3-32 32v832c0 17.7 14.3 32 32 32h640c17.7 0 32-14.3 32-32V311.3c0-8.5-3.4-16.7-9.4-22.7zM790.2 326H602V137.8L790.2 326zm1.8 562H232V136h302v216a42 42 0 0042 42h216v494z"
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></path>
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</svg>
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<svg
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v-else
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class="file-svg"
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focusable="false"
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data-icon="file"
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width="1em"
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height="1em"
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fill="currentColor"
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aria-hidden="true"
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viewBox="64 64 896 896"
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>
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<path
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d="M854.6 288.6L639.4 73.4c-6-6-14.1-9.4-22.6-9.4H192c-17.7 0-32 14.3-32 32v832c0 17.7 14.3 32 32 32h640c17.7 0 32-14.3 32-32V311.3c0-8.5-3.4-16.7-9.4-22.7zM790.2 326H602V137.8L790.2 326zm1.8 562H232V136h302v216a42 42 0 0042 42h216v494z"
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></path>
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</svg>
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<div class="file-mask">
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<a class="file-icon" title="预览" @click="onPreview(n - 1, uploadedFiles[n - 1].url)">
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<svg
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class="icon-svg"
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focusable="false"
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data-icon="eye"
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width="1em"
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height="1em"
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fill="currentColor"
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aria-hidden="true"
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viewBox="64 64 896 896"
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||
>
|
||
<path
|
||
d="M942.2 486.2C847.4 286.5 704.1 186 512 186c-192.2 0-335.4 100.5-430.2 300.3a60.3 60.3 0 000 51.5C176.6 737.5 319.9 838 512 838c192.2 0 335.4-100.5 430.2-300.3 7.7-16.2 7.7-35 0-51.5zM512 766c-161.3 0-279.4-81.8-362.7-254C232.6 339.8 350.7 258 512 258c161.3 0 279.4 81.8 362.7 254C791.5 684.2 673.4 766 512 766zm-4-430c-97.2 0-176 78.8-176 176s78.8 176 176 176 176-78.8 176-176-78.8-176-176-176zm0 288c-61.9 0-112-50.1-112-112s50.1-112 112-112 112 50.1 112 112-50.1 112-112 112z"
|
||
></path>
|
||
</svg>
|
||
</a>
|
||
<a v-show="!disabled" class="file-icon" title="删除" @click.prevent.stop="onRemove(n - 1)">
|
||
<svg
|
||
class="icon-svg"
|
||
focusable="false"
|
||
data-icon="delete"
|
||
width="1em"
|
||
height="1em"
|
||
fill="currentColor"
|
||
aria-hidden="true"
|
||
viewBox="64 64 896 896"
|
||
>
|
||
<path
|
||
d="M360 184h-8c4.4 0 8-3.6 8-8v8h304v-8c0 4.4 3.6 8 8 8h-8v72h72v-80c0-35.3-28.7-64-64-64H352c-35.3 0-64 28.7-64 64v80h72v-72zm504 72H160c-17.7 0-32 14.3-32 32v32c0 4.4 3.6 8 8 8h60.4l24.7 523c1.6 34.1 29.8 61 63.9 61h454c34.2 0 62.3-26.8 63.9-61l24.7-523H888c4.4 0 8-3.6 8-8v-32c0-17.7-14.3-32-32-32zM731.3 840H292.7l-24.2-512h487l-24.2 512z"
|
||
></path>
|
||
</svg>
|
||
</a>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</Space>
|
||
<Message ref="messageRef" v-bind="messageProps"/>
|
||
</div>
|
||
</template>
|
||
<style lang="less" scoped>
|
||
.m-upload-wrap {
|
||
display: inline-block;
|
||
|
||
.m-upload-item {
|
||
display: inline-block;
|
||
}
|
||
|
||
.mr8 {
|
||
margin-right: 8px;
|
||
}
|
||
}
|
||
|
||
.m-upload {
|
||
position: relative;
|
||
display: inline-block;
|
||
width: 100px;
|
||
height: 100px;
|
||
|
||
.upload-item {
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
text-align: center;
|
||
width: 100px;
|
||
height: 100px;
|
||
border-radius: 8px;
|
||
border: 1px dashed #d9d9d9;
|
||
background-color: rgba(0, 0, 0, 0.02);
|
||
cursor: pointer;
|
||
transition: border-color 0.3s;
|
||
|
||
&:hover {
|
||
border-color: #40a9ff;
|
||
}
|
||
|
||
.plus-svg {
|
||
display: inline-block;
|
||
font-size: 14px;
|
||
color: rgba(0, 0, 0, 0.88);
|
||
fill: currentColor;
|
||
}
|
||
|
||
.upload-tip {
|
||
margin-top: 8px;
|
||
font-size: 14px;
|
||
color: rgba(0, 0, 0, 0.88);
|
||
line-height: 1.5714285714285714;
|
||
}
|
||
}
|
||
|
||
.upload-disabled {
|
||
cursor: not-allowed;
|
||
|
||
&:hover {
|
||
border-color: #d9d9d9;
|
||
}
|
||
}
|
||
|
||
.file-uploading {
|
||
width: 100px;
|
||
height: 100px;
|
||
padding: 8px;
|
||
border-radius: 8px;
|
||
border: 1px dashed #d9d9d9;
|
||
background-color: rgba(0, 0, 0, 0.02);
|
||
display: flex;
|
||
align-items: center;
|
||
text-align: center;
|
||
|
||
.spin-uploading {
|
||
display: inline-block;
|
||
|
||
:deep(.spin-tip) {
|
||
max-width: 82px;
|
||
overflow: hidden;
|
||
white-space: nowrap;
|
||
text-overflow: ellipsis;
|
||
}
|
||
}
|
||
}
|
||
|
||
.file-preview {
|
||
position: relative;
|
||
padding: 8px;
|
||
width: 100px;
|
||
height: 100px;
|
||
border-radius: 8px;
|
||
border: 1px solid #d9d9d9;
|
||
display: flex;
|
||
align-items: center;
|
||
text-align: center;
|
||
|
||
.file-svg {
|
||
display: inline-block;
|
||
width: 100%;
|
||
height: 60px;
|
||
color: rgba(0, 0, 0, 0.88);
|
||
fill: currentColor;
|
||
}
|
||
|
||
.file-mask {
|
||
// top right bottom left 简写为 inset: 0
|
||
// insert 无论元素的书写模式、行内方向和文本朝向如何，其所定义的都不是逻辑偏移而是实体偏移
|
||
position: absolute;
|
||
inset: 0;
|
||
margin: 8px;
|
||
display: flex;
|
||
align-items: center;
|
||
justify-content: center;
|
||
background: rgba(0, 0, 0, 0.5);
|
||
opacity: 0;
|
||
pointer-events: none;
|
||
transition: opacity 0.3s;
|
||
|
||
.file-icon {
|
||
display: inline-block;
|
||
height: 16px;
|
||
margin: 0 4px;
|
||
cursor: pointer;
|
||
|
||
.icon-svg {
|
||
display: inline-block;
|
||
font-size: 16px;
|
||
color: rgba(255, 255, 255, 0.65);
|
||
fill: currentColor;
|
||
cursor: pointer;
|
||
transition: color 0.3s;
|
||
|
||
&:hover {
|
||
color: rgba(255, 255, 255, 1);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
&:hover {
|
||
.file-mask {
|
||
opacity: 1;
|
||
pointer-events: auto;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
</style>
|