<template> <div v-if="isAdvanced" class="p-fileupload p-fileupload-advanced p-component"> <input ref="fileInput" type="file" @change="onFileSelect" :multiple="multiple" :accept="accept" :disabled="chooseDisabled" /> <div class="p-fileupload-buttonbar"> <slot name="header" :files="files" :uploadedFiles="uploadedFiles" :chooseCallback="choose" :uploadCallback="upload" :clearCallback="clear"> <span v-ripple :class="advancedChooseButtonClass" :style="style" @click="choose" @keydown.enter="choose" @focus="onFocus" @blur="onBlur" tabindex="0"> <span :class="advancedChooseIconClass"></span> <span class="p-button-label">{{ chooseButtonLabel }}</span> </span> <FileUploadButton v-if="showUploadButton" :label="uploadButtonLabel" :icon="uploadIcon" @click="upload" :disabled="uploadDisabled" /> <FileUploadButton v-if="showCancelButton" :label="cancelButtonLabel" :icon="cancelIcon" @click="clear" :disabled="cancelDisabled" /> </slot> </div> <div ref="content" class="p-fileupload-content" @dragenter="onDragEnter" @dragover="onDragOver" @dragleave="onDragLeave" @drop="onDrop"> <slot name="content" :files="files" :uploadedFiles="uploadedFiles" :removeUploadedFileCallback="removeUploadedFile" :removeFileCallback="remove" :progress="progress" :messages="messages"> <FileUploadProgressBar v-if="hasFiles" :value="progress" :showValue="false" /> <FileUploadMessage v-for="msg of messages" :key="msg" severity="error" @close="onMessageClose">{{ msg }}</FileUploadMessage> <FileContent v-if="hasFiles" :files="files" @remove="remove" :badgeValue="pendingLabel" :previewWidth="previewWidth" /> <FileContent :files="uploadedFiles" @remove="removeUploadedFile" :badgeValue="completedLabel" badgeSeverity="success" :previewWidth="previewWidth" /> </slot> <div v-if="$slots.empty && !hasFiles && !hasUploadedFiles" class="p-fileupload-empty"> <slot name="empty"></slot> </div> </div> </div> <div v-else-if="isBasic" class="p-fileupload p-fileupload-basic p-component"> <FileUploadMessage v-for="msg of messages" :key="msg" severity="error" @close="onMessageClose">{{ msg }}</FileUploadMessage> <span v-ripple :class="basicChooseButtonClass" :style="style" @mouseup="onBasicUploaderClick" @keydown.enter="choose" @focus="onFocus" @blur="onBlur" tabindex="0"> <span :class="basicChooseButtonIconClass"></span> <span class="p-button-label">{{ basicChooseButtonLabel }}</span> <input v-if="!hasFiles" ref="fileInput" type="file" :accept="accept" :disabled="disabled" :multiple="multiple" @change="onFileSelect" @focus="onFocus" @blur="onBlur" /> </span> </div> </template> <script> import Button from 'primevue/button'; import Message from 'primevue/message'; import ProgressBar from 'primevue/progressbar'; import Ripple from 'primevue/ripple'; import { DomHandler } from 'primevue/utils'; import FileContent from './FileContent.vue'; export default { name: 'FileUpload', emits: ['select', 'uploader', 'before-upload', 'progress', 'upload', 'error', 'before-send', 'clear', 'remove', 'remove-uploaded-file'], props: { name: { type: String, default: null }, url: { type: String, default: null }, mode: { type: String, default: 'advanced' }, multiple: { type: Boolean, default: false }, accept: { type: String, default: null }, disabled: { type: Boolean, default: false }, auto: { type: Boolean, default: false }, maxFileSize: { type: Number, default: null }, invalidFileSizeMessage: { type: String, default: '{0}: Invalid file size, file size should be smaller than {1}.' }, invalidFileTypeMessage: { type: String, default: '{0}: Invalid file type, allowed file types: {1}.' }, fileLimit: { type: Number, default: null }, invalidFileLimitMessage: { type: String, default: 'Maximum number of files exceeded, limit is {0} at most.' }, withCredentials: { type: Boolean, default: false }, previewWidth: { type: Number, default: 50 }, chooseLabel: { type: String, default: null }, uploadLabel: { type: String, default: null }, cancelLabel: { type: String, default: null }, customUpload: { type: Boolean, default: false }, showUploadButton: { type: Boolean, default: true }, showCancelButton: { type: Boolean, default: true }, chooseIcon: { type: String, default: 'pi pi-plus' }, uploadIcon: { type: String, default: 'pi pi-upload' }, cancelIcon: { type: String, default: 'pi pi-times' }, style: null, class: null }, duplicateIEEvent: false, data() { return { uploadedFileCount: 0, files: [], messages: [], focused: false, progress: null, uploadedFiles: [] }; }, methods: { onFileSelect(event) { if (event.type !== 'drop' && this.isIE11() && this.duplicateIEEvent) { this.duplicateIEEvent = false; return; } this.messages = []; this.files = this.files || []; let files = event.dataTransfer ? event.dataTransfer.files : event.target.files; for (let file of files) { if (!this.isFileSelected(file)) { if (this.validate(file)) { if (this.isImage(file)) { file.objectURL = window.URL.createObjectURL(file); } this.files.push(file); } } } this.$emit('select', { originalEvent: event, files: this.files }); if (this.fileLimit) { this.checkFileLimit(); } if (this.auto && this.hasFiles && !this.isFileLimitExceeded()) { this.upload(); } if (event.type !== 'drop' && this.isIE11()) { this.clearIEInput(); } else { this.clearInputElement(); } }, choose() { this.$refs.fileInput.click(); }, upload() { if (this.customUpload) { if (this.fileLimit) { this.uploadedFileCount += this.files.length; } this.$emit('uploader', { files: this.files }); this.clear(); } else { let xhr = new XMLHttpRequest(); let formData = new FormData(); this.$emit('before-upload', { xhr: xhr, formData: formData }); for (let file of this.files) { formData.append(this.name, file, file.name); } xhr.upload.addEventListener('progress', (event) => { if (event.lengthComputable) { this.progress = Math.round((event.loaded * 100) / event.total); } this.$emit('progress', { originalEvent: event, progress: this.progress }); }); xhr.onreadystatechange = () => { if (xhr.readyState === 4) { this.progress = 0; if (xhr.status >= 200 && xhr.status < 300) { if (this.fileLimit) { this.uploadedFileCount += this.files.length; } this.$emit('upload', { xhr: xhr, files: this.files }); } else { this.$emit('error', { xhr: xhr, files: this.files }); } this.uploadedFiles.push(...this.files); this.clear(); } }; xhr.open('POST', this.url, true); this.$emit('before-send', { xhr: xhr, formData: formData }); xhr.withCredentials = this.withCredentials; xhr.send(formData); } }, clear() { this.files = []; this.messages = null; this.$emit('clear'); if (this.isAdvanced) { this.clearInputElement(); } }, onFocus() { this.focused = true; }, onBlur() { this.focused = false; }, isFileSelected(file) { if (this.files && this.files.length) { for (let sFile of this.files) { if (sFile.name + sFile.type + sFile.size === file.name + file.type + file.size) return true; } } return false; }, isIE11() { return !!window['MSInputMethodContext'] && !!document['documentMode']; }, validate(file) { if (this.accept && !this.isFileTypeValid(file)) { this.messages.push(this.invalidFileTypeMessage.replace('{0}', file.name).replace('{1}', this.accept)); return false; } if (this.maxFileSize && file.size > this.maxFileSize) { this.messages.push(this.invalidFileSizeMessage.replace('{0}', file.name).replace('{1}', this.formatSize(this.maxFileSize))); return false; } return true; }, isFileTypeValid(file) { let acceptableTypes = this.accept.split(',').map((type) => type.trim()); for (let type of acceptableTypes) { let acceptable = this.isWildcard(type) ? this.getTypeClass(file.type) === this.getTypeClass(type) : file.type == type || this.getFileExtension(file).toLowerCase() === type.toLowerCase(); if (acceptable) { return true; } } return false; }, getTypeClass(fileType) { return fileType.substring(0, fileType.indexOf('/')); }, isWildcard(fileType) { return fileType.indexOf('*') !== -1; }, getFileExtension(file) { return '.' + file.name.split('.').pop(); }, isImage(file) { return /^image\//.test(file.type); }, onDragEnter(event) { if (!this.disabled) { event.stopPropagation(); event.preventDefault(); } }, onDragOver(event) { if (!this.disabled) { DomHandler.addClass(this.$refs.content, 'p-fileupload-highlight'); event.stopPropagation(); event.preventDefault(); } }, onDragLeave() { if (!this.disabled) { DomHandler.removeClass(this.$refs.content, 'p-fileupload-highlight'); } }, onDrop(event) { if (!this.disabled) { DomHandler.removeClass(this.$refs.content, 'p-fileupload-highlight'); event.stopPropagation(); event.preventDefault(); const files = event.dataTransfer ? event.dataTransfer.files : event.target.files; const allowDrop = this.multiple || (files && files.length === 1); if (allowDrop) { this.onFileSelect(event); } } }, onBasicUploaderClick() { if (this.hasFiles) this.upload(); else this.$refs.fileInput.click(); }, remove(index) { this.clearInputElement(); let removedFile = this.files.splice(index, 1)[0]; this.files = [...this.files]; this.$emit('remove', { file: removedFile, files: this.files }); }, removeUploadedFile(index) { let removedFile = this.uploadedFiles.splice(index, 1)[0]; this.uploadedFiles = [...this.uploadedFiles]; this.$emit('remove-uploaded-file', { file: removedFile, files: this.uploadedFiles }); }, clearInputElement() { this.$refs.fileInput.value = ''; }, clearIEInput() { if (this.$refs.fileInput) { this.duplicateIEEvent = true; //IE11 fix to prevent onFileChange trigger again this.$refs.fileInput.value = ''; } }, formatSize(bytes) { if (bytes === 0) { return '0 B'; } let k = 1000, dm = 3, sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'], i = Math.floor(Math.log(bytes) / Math.log(k)); return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i]; }, isFileLimitExceeded() { if (this.fileLimit && this.fileLimit <= this.files.length + this.uploadedFileCount && this.focused) { this.focused = false; } return this.fileLimit && this.fileLimit < this.files.length + this.uploadedFileCount; }, checkFileLimit() { if (this.isFileLimitExceeded()) { this.messages.push(this.invalidFileLimitMessage.replace('{0}', this.fileLimit.toString())); } }, onMessageClose() { this.messages = null; } }, computed: { isAdvanced() { return this.mode === 'advanced'; }, isBasic() { return this.mode === 'basic'; }, advancedChooseButtonClass() { return [ 'p-button p-component p-fileupload-choose', this.class, { 'p-disabled': this.disabled, 'p-focus': this.focused } ]; }, basicChooseButtonClass() { return [ 'p-button p-component p-fileupload-choose', this.class, { 'p-fileupload-choose-selected': this.hasFiles, 'p-disabled': this.disabled, 'p-focus': this.focused } ]; }, advancedChooseIconClass() { return ['p-button-icon p-button-icon-left pi-fw', this.chooseIcon]; }, basicChooseButtonIconClass() { return ['p-button-icon p-button-icon-left', !this.hasFiles || this.auto ? this.uploadIcon : this.chooseIcon]; }, basicChooseButtonLabel() { return this.auto ? this.chooseButtonLabel : this.hasFiles ? this.files.map((f) => f.name).join(', ') : this.chooseButtonLabel; }, hasFiles() { return this.files && this.files.length > 0; }, hasUploadedFiles() { return this.uploadedFiles && this.uploadedFiles.length > 0; }, chooseDisabled() { return this.disabled || (this.fileLimit && this.fileLimit <= this.files.length + this.uploadedFileCount); }, uploadDisabled() { return this.disabled || !this.hasFiles || (this.fileLimit && this.fileLimit < this.files.length); }, cancelDisabled() { return this.disabled || !this.hasFiles; }, chooseButtonLabel() { return this.chooseLabel || this.$primevue.config.locale.choose; }, uploadButtonLabel() { return this.uploadLabel || this.$primevue.config.locale.upload; }, cancelButtonLabel() { return this.cancelLabel || this.$primevue.config.locale.cancel; }, completedLabel() { return this.$primevue.config.locale.completed; }, pendingLabel() { return this.$primevue.config.locale.pending; } }, components: { FileUploadButton: Button, FileUploadProgressBar: ProgressBar, FileUploadMessage: Message, FileContent }, directives: { ripple: Ripple } }; </script> <style> .p-fileupload-content { position: relative; } .p-fileupload-content .p-progressbar { width: 100%; position: absolute; top: 0; left: 0; } .p-button.p-fileupload-choose { position: relative; overflow: hidden; } .p-fileupload-buttonbar { display: flex; flex-wrap: wrap; } .p-fileupload > input[type='file'], .p-fileupload-basic input[type='file'] { display: none; } .p-fluid .p-fileupload .p-button { width: auto; } .p-fileupload-file { display: flex; flex-wrap: wrap; align-items: center; } .p-fileupload-file-thumbnail { flex-shrink: 0; } .p-fileupload-file-actions { margin-left: auto; } </style>