File.js
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"use strict";
const conversions = require("webidl-conversions");
const utils = require("./utils.js");
const Blob = require("./Blob.js");
const FilePropertyBag = require("./FilePropertyBag.js");
const implSymbol = utils.implSymbol;
const ctorRegistrySymbol = utils.ctorRegistrySymbol;
const interfaceName = "File";
exports.is = value => {
return utils.isObject(value) && utils.hasOwn(value, implSymbol) && value[implSymbol] instanceof Impl.implementation;
};
exports.isImpl = value => {
return utils.isObject(value) && value instanceof Impl.implementation;
};
exports.convert = (value, { context = "The provided value" } = {}) => {
if (exports.is(value)) {
return utils.implForWrapper(value);
}
throw new TypeError(`${context} is not of type 'File'.`);
};
function makeWrapper(globalObject) {
if (globalObject[ctorRegistrySymbol] === undefined) {
throw new Error("Internal error: invalid global object");
}
const ctor = globalObject[ctorRegistrySymbol]["File"];
if (ctor === undefined) {
throw new Error("Internal error: constructor File is not installed on the passed global object");
}
return Object.create(ctor.prototype);
}
exports.create = (globalObject, constructorArgs, privateData) => {
const wrapper = makeWrapper(globalObject);
return exports.setup(wrapper, globalObject, constructorArgs, privateData);
};
exports.createImpl = (globalObject, constructorArgs, privateData) => {
const wrapper = exports.create(globalObject, constructorArgs, privateData);
return utils.implForWrapper(wrapper);
};
exports._internalSetup = (wrapper, globalObject) => {
Blob._internalSetup(wrapper, globalObject);
};
exports.setup = (wrapper, globalObject, constructorArgs = [], privateData = {}) => {
privateData.wrapper = wrapper;
exports._internalSetup(wrapper, globalObject);
Object.defineProperty(wrapper, implSymbol, {
value: new Impl.implementation(globalObject, constructorArgs, privateData),
configurable: true
});
wrapper[implSymbol][utils.wrapperSymbol] = wrapper;
if (Impl.init) {
Impl.init(wrapper[implSymbol]);
}
return wrapper;
};
exports.new = globalObject => {
const wrapper = makeWrapper(globalObject);
exports._internalSetup(wrapper, globalObject);
Object.defineProperty(wrapper, implSymbol, {
value: Object.create(Impl.implementation.prototype),
configurable: true
});
wrapper[implSymbol][utils.wrapperSymbol] = wrapper;
if (Impl.init) {
Impl.init(wrapper[implSymbol]);
}
return wrapper[implSymbol];
};
const exposed = new Set(["Window", "Worker"]);
exports.install = (globalObject, globalNames) => {
if (!globalNames.some(globalName => exposed.has(globalName))) {
return;
}
if (globalObject.Blob === undefined) {
throw new Error("Internal error: attempting to evaluate File before Blob");
}
class File extends globalObject.Blob {
constructor(fileBits, fileName) {
if (arguments.length < 2) {
throw new TypeError(
"Failed to construct 'File': 2 arguments required, but only " + arguments.length + " present."
);
}
const args = [];
{
let curArg = arguments[0];
if (!utils.isObject(curArg)) {
throw new TypeError("Failed to construct 'File': parameter 1" + " is not an iterable object.");
} else {
const V = [];
const tmp = curArg;
for (let nextItem of tmp) {
if (Blob.is(nextItem)) {
nextItem = utils.implForWrapper(nextItem);
} else if (utils.isArrayBuffer(nextItem)) {
} else if (ArrayBuffer.isView(nextItem)) {
} else {
nextItem = conversions["USVString"](nextItem, {
context: "Failed to construct 'File': parameter 1" + "'s element"
});
}
V.push(nextItem);
}
curArg = V;
}
args.push(curArg);
}
{
let curArg = arguments[1];
curArg = conversions["USVString"](curArg, { context: "Failed to construct 'File': parameter 2" });
args.push(curArg);
}
{
let curArg = arguments[2];
curArg = FilePropertyBag.convert(curArg, { context: "Failed to construct 'File': parameter 3" });
args.push(curArg);
}
return exports.setup(Object.create(new.target.prototype), globalObject, args);
}
get name() {
const esValue = this !== null && this !== undefined ? this : globalObject;
if (!exports.is(esValue)) {
throw new TypeError("Illegal invocation");
}
return esValue[implSymbol]["name"];
}
get lastModified() {
const esValue = this !== null && this !== undefined ? this : globalObject;
if (!exports.is(esValue)) {
throw new TypeError("Illegal invocation");
}
return esValue[implSymbol]["lastModified"];
}
}
Object.defineProperties(File.prototype, {
name: { enumerable: true },
lastModified: { enumerable: true },
[Symbol.toStringTag]: { value: "File", configurable: true }
});
if (globalObject[ctorRegistrySymbol] === undefined) {
globalObject[ctorRegistrySymbol] = Object.create(null);
}
globalObject[ctorRegistrySymbol][interfaceName] = File;
Object.defineProperty(globalObject, interfaceName, {
configurable: true,
writable: true,
value: File
});
};
const Impl = require("../file-api/File-impl.js");