зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
1.7 KiB
JavaScript
85 строки
1.7 KiB
JavaScript
/**
|
|
* Any copyright is dedicated to the Public Domain.
|
|
* http://creativecommons.org/publicdomain/zero/1.0/
|
|
*/
|
|
const fakeEventType = "foo";
|
|
|
|
function testEventTarget(event) {
|
|
if (event.target !== self) {
|
|
throw new Error("Event has a bad target!");
|
|
}
|
|
if (event.currentTarget) {
|
|
throw new Error("Event has a bad currentTarget!");
|
|
}
|
|
postMessage(event.data);
|
|
}
|
|
|
|
addEventListener(
|
|
fakeEventType,
|
|
function(event) {
|
|
throw new Error("Trusted event listener received untrusted event!");
|
|
},
|
|
false,
|
|
false
|
|
);
|
|
|
|
addEventListener(
|
|
fakeEventType,
|
|
function(event) {
|
|
if (event.target !== self || event.currentTarget !== self) {
|
|
throw new Error("Fake event has bad target!");
|
|
}
|
|
if (event.isTrusted) {
|
|
throw new Error("Event should be untrusted!");
|
|
}
|
|
event.stopImmediatePropagation();
|
|
postMessage(event.data);
|
|
},
|
|
false,
|
|
true
|
|
);
|
|
|
|
addEventListener(
|
|
fakeEventType,
|
|
function(event) {
|
|
throw new Error(
|
|
"This shouldn't get called because of stopImmediatePropagation."
|
|
);
|
|
},
|
|
false,
|
|
true
|
|
);
|
|
|
|
var count = 0;
|
|
onmessage = function(event) {
|
|
if (event.target !== self || event.currentTarget !== self) {
|
|
throw new Error("Event has bad target!");
|
|
}
|
|
|
|
if (!count++) {
|
|
var exception;
|
|
try {
|
|
self.dispatchEvent(event);
|
|
} catch (e) {
|
|
exception = e;
|
|
}
|
|
|
|
if (!exception) {
|
|
throw new Error("Recursive dispatch didn't fail!");
|
|
}
|
|
|
|
event = new MessageEvent(fakeEventType, {
|
|
bubbles: event.bubbles,
|
|
cancelable: event.cancelable,
|
|
data: event.data,
|
|
origin: "*",
|
|
source: null,
|
|
});
|
|
self.dispatchEvent(event);
|
|
|
|
return;
|
|
}
|
|
|
|
setTimeout(testEventTarget, 0, event);
|
|
};
|