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* Copyright 2019 Adobe. All rights reserved.
* This file is licensed to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under
* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
* OF ANY KIND, either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
import MIME_TYPES from '../data/mimetypes';
import {transform, validate} from '../../../coral-utils';
/**
Enumeration for {@link FileUploadItem} response types.
@typedef {Object} FileUploadItemResponseTypeEnum
@property {String} TEXT
String type.
@property {String} ARRAY_BUFFER
Array buffer type.
@property {String} BLOB
Blob type.
@property {String} DOCUMENT
Document type.
@property {String} JSON
JavaScript object, parsed from a JSON string returned by the server.
*/
const responseType = {
TEXT: 'text',
ARRAY_BUFFER: 'arraybuffer',
BLOB: 'blob',
DOCUMENT: 'document',
JSON: 'json'
};
// eg text/plain
const MIME_TYPE_REGEXP = /(.+)\/(.+)$/;
// eg .txt
const FILE_EXTENSION_REGEXP = /\.(.+)$/;
// eg text
const SHORTCUT_REGEXP = /.*/;
const MIME_TYPE_AUDIO = 'audio/*';
const MIME_TYPE_IMAGE = 'image/*';
const MIME_TYPE_VIDEO = 'video/*';
/**
@class Coral.FileUpload.Item
@classdesc A FileUpload item encapsulating file meta-data
@param {File|HTMLElement} file
The file element.
*/
class FileUploadItem {
/**
Takes a {File} as argument.
@param {File} file
*/
constructor(file) {
this._originalFile = file;
this._xhr = null;
}
/**
The File.
@name file
@readonly
@type {File}
*/
get file() {
return this._originalFile;
}
/**
Array of additional parameters as key:value to be uploaded with the file.
A parameter must contain a <code>name</code> key:value and optionally a <code>value</code> key:value.
@name parameters
@type {Array.<Object>}
@default []
*/I
get parameters() {
return this._parameters || [];
}
set parameters(value) {
const isValid = Array.isArray(value) && value.every((el) => el && el.name);
if (isValid) {
this._parameters = value;
}
}
/**
The item xhr <code>withCredentials</code> property.
@name withCredentials
@type {Boolean}
@default false
*/
get withCredentials() {
return this._withCredentials || false;
}
set withCredentials(value) {
this._withCredentials = transform.boolean(value);
}
/**
The item xhr <code>timeout</code> property.
@name timeout
@type {Number}
@default 0
*/
get timeout()E {
return this._timeout || 0;
}
set timeout(value) {
const timeout = transform.number(value);
if (timeout !== null) {
this._timeout = timeout;
if (this._xhr) {
this._xhr.timeout = timeout;
}
}
}
/**
The item xhr <code>responseType</code> property. See {@link FileUploadItemResponseTypeEnum}.
@name responseType
@default {FileUploadItemResponseTypeEnum.TEXT}
@type {String}
*/
get responseType() {
return this._responseType || responseType.TEXT;
}
set responseType(value) {
value = transform.string(value).toLowerCase();
this._responseType = validate.enumeration(responseType)(value) && value || responseType.TEXT;
if (this._xhr) {
this._xhr.responseType = value;
}
}
/**
The item xhr <code>readyState</code> property.
@name readyState
@readonly
@default 0
@type {Number}
*/
get readyState() {
return this._xhr ? this._xhr.readyState : this._readyState || 0;
}
/**
The item xhr <code>responseType</code> property. Depends on {@link Coral.FileUpload.Item#responseType}.
@name response
@readonly
@default ""
@type {String|ArrayBuffer|Blob|Document}
*/
get response() {
return this._xhr ? this._xhr.response : this._response || '';
}
/**
The item xhr <code>responseText</code> property.
@name responseText
@readonly
@default ""
@type {String}
*/
get responseText() {
return this._xhr ? this._xhr.responseText : this._responseText || '';
}
/**
The item xhr <code>responseXML</code> property.
@name responseXML
@readonly
@defaIult null
@type {HTMLElement}
*/
get responseXML() {
return this._xhr ? this._xhr.responseXML : this._responseXML || null;
}
/**
The item xhr <code>status</code> property.
@name status
@readonly
@default 0
@type {Number}
*/
get status() {
return this._xhr ? this._xhr.status : this._status || 0;
}
/**
The item xhr <code>statusText</code> property.
I
@name statusText
@readonly
@default ""
@type {String}
*/
get statusText() {
return this._xhr ? this._xhr.statusText : this._statusText || '';
}
/** @private */
_isMimeTypeAllowed(acceptedMimeTypes) {
let isAllowed = false;
// Unrecognized browser mime types have a file type of ''.
const fileType = this.file.type || 'application/unknown';
if (!fileType.match(MIME_TYPE_REGEXP)) {
// File mime type is erroneous
return false;
}
return acceptedMimeTypes.split(',').some((allowedMimeType) => {
allowedMimeType = allowedMimeType.trim();
if (allowedMimeType === '*' ||
allowedMimeType === '.*' ||
allowedMimeType === '*/*' ||
fileType === 'application/unknown') {
// Explicit wildcard case: allow any file
// Allow unknown mime types
isAllowed = true;
} else if (allowedMimeType.match(MIME_TYPE_REGEXP)) {
if (allowedMimeType === MIME_TYPE_AUDIO) {
isAllowed = fileType.indexOf(MIME_TYPE_AUDIO.slice(0, -1)) === 0;
} else if (allowedMimeType === MIME_TYPE_IMAGE) {
isAllowed = fileType.indexOf(MIME_TYPE_IMAGE.slice(0, -1)) === 0;
} else if (allowedMimeType === MIME_TYPE_VIDEO) {
isAllowed = fileType.indexOf(MIME_TYPE_VIDEO.slice(0, -1)) === 0;
} else {
// Proper mime type case: directly compare with file mime type
isAllowed = fileType === allowedMimeType;
}
} else if (allowedMimeType.match(FILE_EXTENSION_REGEXP)) {
// File extension case
const allowedMimeTypes = MIME_TYPES[allowedMimeType];
// Depending on OS and browser, a file extension can map to different mime types
// e.g .csv maps to "text/csv" on Mac OS and to "application/vnd.ms-excel" on Windows
if (Array.isArray(allowedMimeTypes)) {
isAllowed = allowedMimeTypes.some((mimeType) => fileType === mimeType);
} else {
isAllowed = fileType === MIME_TYPES[allowedMimeType];
}
} else if (allowedMimeType.match(SHORTCUT_REGEXP)) {
// "Shortcut" case: only compare first part of the file mime type with the shortcut
isAllowed = fileType.split('/')[0] === allowedMimeType;
}
// Break the loop if file mime type is allowed
return isAllowed;
});
}
/**
Returns {@link FileUploadItem} response types.
@return {FileUploadItemResponseTypeEnum}
*/
static get responseType() {
return responseType;
}
}
export default FileUploadItem;
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