react-dropzone
Version:
Simple HTML5 drag-drop zone with React.js
325 lines (271 loc) • 13.2 kB
JavaScript
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }
function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
import accepts from "attr-accept"; // Error codes
export var FILE_INVALID_TYPE = "file-invalid-type";
export var FILE_TOO_LARGE = "file-too-large";
export var FILE_TOO_SMALL = "file-too-small";
export var TOO_MANY_FILES = "too-many-files";
export var ErrorCode = {
FileInvalidType: FILE_INVALID_TYPE,
FileTooLarge: FILE_TOO_LARGE,
FileTooSmall: FILE_TOO_SMALL,
TooManyFiles: TOO_MANY_FILES
}; // File Errors
export var getInvalidTypeRejectionErr = function getInvalidTypeRejectionErr(accept) {
accept = Array.isArray(accept) && accept.length === 1 ? accept[0] : accept;
var messageSuffix = Array.isArray(accept) ? "one of ".concat(accept.join(", ")) : accept;
return {
code: FILE_INVALID_TYPE,
message: "File type must be ".concat(messageSuffix)
};
};
export var getTooLargeRejectionErr = function getTooLargeRejectionErr(maxSize) {
return {
code: FILE_TOO_LARGE,
message: "File is larger than ".concat(maxSize, " ").concat(maxSize === 1 ? "byte" : "bytes")
};
};
export var getTooSmallRejectionErr = function getTooSmallRejectionErr(minSize) {
return {
code: FILE_TOO_SMALL,
message: "File is smaller than ".concat(minSize, " ").concat(minSize === 1 ? "byte" : "bytes")
};
};
export var TOO_MANY_FILES_REJECTION = {
code: TOO_MANY_FILES,
message: "Too many files"
}; // Firefox versions prior to 53 return a bogus MIME type for every file drag, so dragovers with
// that MIME type will always be accepted
export function fileAccepted(file, accept) {
var isAcceptable = file.type === "application/x-moz-file" || accepts(file, accept);
return [isAcceptable, isAcceptable ? null : getInvalidTypeRejectionErr(accept)];
}
export function fileMatchSize(file, minSize, maxSize) {
if (isDefined(file.size)) {
if (isDefined(minSize) && isDefined(maxSize)) {
if (file.size > maxSize) return [false, getTooLargeRejectionErr(maxSize)];
if (file.size < minSize) return [false, getTooSmallRejectionErr(minSize)];
} else if (isDefined(minSize) && file.size < minSize) return [false, getTooSmallRejectionErr(minSize)];else if (isDefined(maxSize) && file.size > maxSize) return [false, getTooLargeRejectionErr(maxSize)];
}
return [true, null];
}
function isDefined(value) {
return value !== undefined && value !== null;
}
/**
*
* @param {object} options
* @param {File[]} options.files
* @param {string|string[]} [options.accept]
* @param {number} [options.minSize]
* @param {number} [options.maxSize]
* @param {boolean} [options.multiple]
* @param {number} [options.maxFiles]
* @param {(f: File) => FileError|FileError[]|null} [options.validator]
* @returns
*/
export function allFilesAccepted(_ref) {
var files = _ref.files,
accept = _ref.accept,
minSize = _ref.minSize,
maxSize = _ref.maxSize,
multiple = _ref.multiple,
maxFiles = _ref.maxFiles,
validator = _ref.validator;
if (!multiple && files.length > 1 || multiple && maxFiles >= 1 && files.length > maxFiles) {
return false;
}
return files.every(function (file) {
var _fileAccepted = fileAccepted(file, accept),
_fileAccepted2 = _slicedToArray(_fileAccepted, 1),
accepted = _fileAccepted2[0];
var _fileMatchSize = fileMatchSize(file, minSize, maxSize),
_fileMatchSize2 = _slicedToArray(_fileMatchSize, 1),
sizeMatch = _fileMatchSize2[0];
var customErrors = validator ? validator(file) : null;
return accepted && sizeMatch && !customErrors;
});
} // React's synthetic events has event.isPropagationStopped,
// but to remain compatibility with other libs (Preact) fall back
// to check event.cancelBubble
export function isPropagationStopped(event) {
if (typeof event.isPropagationStopped === "function") {
return event.isPropagationStopped();
} else if (typeof event.cancelBubble !== "undefined") {
return event.cancelBubble;
}
return false;
}
export function isEvtWithFiles(event) {
if (!event.dataTransfer) {
return !!event.target && !!event.target.files;
} // https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/types
// https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Recommended_drag_types#file
return Array.prototype.some.call(event.dataTransfer.types, function (type) {
return type === "Files" || type === "application/x-moz-file";
});
}
export function isKindFile(item) {
return _typeof(item) === "object" && item !== null && item.kind === "file";
} // allow the entire document to be a drag target
export function onDocumentDragOver(event) {
event.preventDefault();
}
function isIe(userAgent) {
return userAgent.indexOf("MSIE") !== -1 || userAgent.indexOf("Trident/") !== -1;
}
function isEdge(userAgent) {
return userAgent.indexOf("Edge/") !== -1;
}
export function isIeOrEdge() {
var userAgent = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : window.navigator.userAgent;
return isIe(userAgent) || isEdge(userAgent);
}
/**
* This is intended to be used to compose event handlers
* They are executed in order until one of them calls `event.isPropagationStopped()`.
* Note that the check is done on the first invoke too,
* meaning that if propagation was stopped before invoking the fns,
* no handlers will be executed.
*
* @param {Function} fns the event hanlder functions
* @return {Function} the event handler to add to an element
*/
export function composeEventHandlers() {
for (var _len = arguments.length, fns = new Array(_len), _key = 0; _key < _len; _key++) {
fns[_key] = arguments[_key];
}
return function (event) {
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
return fns.some(function (fn) {
if (!isPropagationStopped(event) && fn) {
fn.apply(void 0, [event].concat(args));
}
return isPropagationStopped(event);
});
};
}
/**
* canUseFileSystemAccessAPI checks if the [File System Access API](https://developer.mozilla.org/en-US/docs/Web/API/File_System_Access_API)
* is supported by the browser.
* @returns {boolean}
*/
export function canUseFileSystemAccessAPI() {
return "showOpenFilePicker" in window;
}
/**
* Convert the `{accept}` dropzone prop to the
* `{types}` option for https://developer.mozilla.org/en-US/docs/Web/API/window/showOpenFilePicker
*
* @param {AcceptProp} accept
* @returns {{accept: string[]}[]}
*/
export function pickerOptionsFromAccept(accept) {
if (isDefined(accept)) {
var acceptForPicker = Object.entries(accept).filter(function (_ref2) {
var _ref3 = _slicedToArray(_ref2, 2),
mimeType = _ref3[0],
ext = _ref3[1];
var ok = true;
if (!isMIMEType(mimeType)) {
console.warn("Skipped \"".concat(mimeType, "\" because it is not a valid MIME type. Check https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types for a list of valid MIME types."));
ok = false;
}
if (!Array.isArray(ext) || !ext.every(isExt)) {
console.warn("Skipped \"".concat(mimeType, "\" because an invalid file extension was provided."));
ok = false;
}
return ok;
}).reduce(function (agg, _ref4) {
var _ref5 = _slicedToArray(_ref4, 2),
mimeType = _ref5[0],
ext = _ref5[1];
return _objectSpread(_objectSpread({}, agg), {}, _defineProperty({}, mimeType, ext));
}, {});
return [{
accept: acceptForPicker
}];
}
return accept;
}
/**
* Convert the `{accept}` dropzone prop to an array of MIME types/extensions.
* @param {AcceptProp} accept
* @returns {string}
*/
export function acceptPropAsAcceptAttr(accept) {
if (isDefined(accept)) {
return Object.entries(accept).reduce(function (a, _ref6) {
var _ref7 = _slicedToArray(_ref6, 2),
mimeType = _ref7[0],
ext = _ref7[1];
return [].concat(_toConsumableArray(a), [mimeType], _toConsumableArray(ext));
}, []) // Silently discard invalid entries as pickerOptionsFromAccept warns about these
.filter(function (v) {
return isMIMEType(v) || isExt(v);
}).join(",");
}
return undefined;
}
/**
* Check if v is an exception caused by aborting a request (e.g window.showOpenFilePicker()).
*
* See https://developer.mozilla.org/en-US/docs/Web/API/DOMException.
* @param {any} v
* @returns {boolean} True if v is an abort exception.
*/
export function isAbort(v) {
return v instanceof DOMException && (v.name === "AbortError" || v.code === v.ABORT_ERR);
}
/**
* Check if v is a security error.
*
* See https://developer.mozilla.org/en-US/docs/Web/API/DOMException.
* @param {any} v
* @returns {boolean} True if v is a security error.
*/
export function isSecurityError(v) {
return v instanceof DOMException && (v.name === "SecurityError" || v.code === v.SECURITY_ERR);
}
/**
* Check if v is a MIME type string.
*
* See accepted format: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#unique_file_type_specifiers.
*
* @param {string} v
*/
export function isMIMEType(v) {
return v === "audio/*" || v === "video/*" || v === "image/*" || v === "text/*" || /\w+\/[-+.\w]+/g.test(v);
}
/**
* Check if v is a file extension.
* @param {string} v
*/
export function isExt(v) {
return /^.*\.[\w]+$/.test(v);
}
/**
* @typedef {Object.<string, string[]>} AcceptProp
*/
/**
* @typedef {object} FileError
* @property {string} message
* @property {ErrorCode|string} code
*/
/**
* @typedef {"file-invalid-type"|"file-too-large"|"file-too-small"|"too-many-files"} ErrorCode
*/