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Code Issues Packages 1 Wiki Activity

fix: FileReader onevent attributes don't conform to spec (#11908)

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Feng Yu 2021-09-12 21:35:05 +08:00 committed by GitHub
parent 676565c711
commit 464dcc1388
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 71 additions and 43 deletions
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104
ext/web/10_filereader.js
View file

@ -41,6 +41,7 @@
const result = Symbol("[[result]]");
const error = Symbol("[[error]]");
const aborted = Symbol("[[aborted]]");
const handlerSymbol = Symbol("eventHandlers");
class FileReader extends EventTarget {
get [SymbolToStringTag]() {
@ -263,6 +264,32 @@
})();
}
#getEventHandlerFor(name) {
webidl.assertBranded(this, FileReader);
const maybeMap = this[handlerSymbol];
if (!maybeMap) return null;
return MapPrototypeGet(maybeMap, name)?.handler ?? null;
}
#setEventHandlerFor(name, value) {
webidl.assertBranded(this, FileReader);
if (!this[handlerSymbol]) {
this[handlerSymbol] = new Map();
}
let handlerWrapper = MapPrototypeGet(this[handlerSymbol], name);
if (handlerWrapper) {
handlerWrapper.handler = value;
} else {
handlerWrapper = makeWrappedHandler(value);
this.addEventListener(name, handlerWrapper);
}
MapPrototypeSet(this[handlerSymbol], name, handlerWrapper);
}
constructor() {
super();
this[webidl.brand] = webidl.brand;
@ -368,6 +395,48 @@
// alias for readAsArrayBuffer
this.#readOperation(blob, { kind: "Text", encoding });
}
get onerror() {
return this.#getEventHandlerFor("error");
}
set onerror(value) {
this.#setEventHandlerFor("error", value);
}
get onloadstart() {
return this.#getEventHandlerFor("loadstart");
}
set onloadstart(value) {
this.#setEventHandlerFor("loadstart", value);
}
get onload() {
return this.#getEventHandlerFor("load");
}
set onload(value) {
this.#setEventHandlerFor("load", value);
}
get onloadend() {
return this.#getEventHandlerFor("loadend");
}
set onloadend(value) {
this.#setEventHandlerFor("loadend", value);
}
get onprogress() {
return this.#getEventHandlerFor("progress");
}
set onprogress(value) {
this.#setEventHandlerFor("progress", value);
}
get onabort() {
return this.#getEventHandlerFor("abort");
}
set onabort(value) {
this.#setEventHandlerFor("abort", value);
}
}
webidl.configurePrototype(FileReader);
@ -409,8 +478,6 @@
value: 2,
});
const handlerSymbol = Symbol("eventHandlers");
function makeWrappedHandler(handler) {
function wrappedHandler(...args) {
if (typeof wrappedHandler.handler !== "function") {
@ -421,39 +488,6 @@
wrappedHandler.handler = handler;
return wrappedHandler;
}
// TODO(benjamingr) reuse when we can reuse code between web crates
function defineEventHandler(emitter, name) {
// HTML specification section 8.1.5.1
ObjectDefineProperty(emitter, `on${name}`, {
get() {
const maybeMap = this[handlerSymbol];
if (!maybeMap) return null;
return MapPrototypeGet(maybeMap, name)?.handler ?? null;
},
set(value) {
if (!this[handlerSymbol]) {
this[handlerSymbol] = new Map();
}
let handlerWrapper = MapPrototypeGet(this[handlerSymbol], name);
if (handlerWrapper) {
handlerWrapper.handler = value;
} else {
handlerWrapper = makeWrappedHandler(value);
this.addEventListener(name, handlerWrapper);
}
MapPrototypeSet(this[handlerSymbol], name, handlerWrapper);
},
configurable: true,
enumerable: true,
});
}
defineEventHandler(FileReader.prototype, "error");
defineEventHandler(FileReader.prototype, "loadstart");
defineEventHandler(FileReader.prototype, "load");
defineEventHandler(FileReader.prototype, "loadend");
defineEventHandler(FileReader.prototype, "progress");
defineEventHandler(FileReader.prototype, "abort");
window.__bootstrap.fileReader = {
FileReader,

10
tools/wpt/expectation.json
View file

@ -13761,13 +13761,7 @@
"FileList interface: existence and properties of interface prototype object's \"constructor\" property",
"FileList interface: existence and properties of interface prototype object's @@unscopables property",
"FileList interface: operation item(unsigned long)",
"FileList interface: attribute length",
"FileReader interface: attribute onloadstart",
"FileReader interface: attribute onprogress",
"FileReader interface: attribute onload",
"FileReader interface: attribute onabort",
"FileReader interface: attribute onerror",
"FileReader interface: attribute onloadend"
"FileList interface: attribute length"
]
},
"html": {
@ -14287,4 +14281,4 @@
"Pattern: [{\"pathname\":\"/foo/bar\"}] Inputs: [\"./foo/bar\",\"https://example.com\"]"
]
}
}
}