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Provide feedback in the CUSTOM tab for WebGL usage attempts even if the canvas element is not attached to the DOM.

This commit is contained in:
hackademix 2021-02-08 12:53:45 +01:00
parent 255abeddb6
commit 27281a2ada
1 changed files with 11 additions and 9 deletions
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20
src/content/webglHook.js
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@ -5,8 +5,6 @@ ns.on("capabilities", event => {
if (ns.allows("webgl")) return;
let env = {eventName: `nsWebgl:${uuid()}`};
window.addEventListener(env.eventName, e => {
let canvas = e.target;
if (!(canvas instanceof HTMLCanvasElement)) return;
let request = {
id: "noscript-webgl",
type: "webgl",
@ -15,12 +13,15 @@ ns.on("capabilities", event => {
embeddingDocument: true,
};
seen.record({policyType: "webgl", request, allowed: false});
try {
let ph = PlaceHolder.create("webgl", request);
ph.replace(canvas);
PlaceHolder.listen();
} catch (e) {
error(e);
let canvas = e.target;
if (canvas instanceof HTMLCanvasElement) {
try {
let ph = PlaceHolder.create("webgl", request);
ph.replace(canvas);
PlaceHolder.listen();
} catch (e) {
error(e);
}
}
notifyPage();
}, true);
@ -30,7 +31,8 @@ ns.on("capabilities", event => {
let getContext = proto.getContext;
exportFunction(function(type, ...rest) {
if (type && type.toLowerCase().includes("webgl")) {
this.dispatchEvent(new Event(env.eventName));
let target = document.contains(this) ? this : window;
target.dispatchEvent(new Event(env.eventName, {composed: true}));
return null;
}
return getContext.call(this, type, ...rest);