44 lines
1.2 KiB
TypeScript
44 lines
1.2 KiB
TypeScript
import { ControllerMessage, WorkerLike, WorkerMessage } from "./types";
|
|
import { Sandbox, System } from "./runtime";
|
|
import { safeRun } from "./util";
|
|
|
|
// @ts-ignore
|
|
import sandboxHtml from "bundle-text:./iframe_sandbox.html";
|
|
|
|
class IFrameWrapper implements WorkerLike {
|
|
private iframe: HTMLIFrameElement;
|
|
onMessage?: (message: any) => Promise<void>;
|
|
|
|
constructor() {
|
|
const iframe = document.createElement("iframe", {});
|
|
this.iframe = iframe;
|
|
iframe.style.display = "none";
|
|
// Let's lock this down significantly
|
|
iframe.setAttribute("sandbox", "allow-scripts");
|
|
iframe.srcdoc = sandboxHtml;
|
|
window.addEventListener("message", (evt: any) => {
|
|
if (evt.source !== iframe.contentWindow) {
|
|
return;
|
|
}
|
|
let data = evt.data;
|
|
if (!data) return;
|
|
safeRun(async () => {
|
|
await this.onMessage!(data);
|
|
});
|
|
});
|
|
document.body.appendChild(iframe);
|
|
}
|
|
|
|
postMessage(message: any): void {
|
|
this.iframe.contentWindow!.postMessage(message, "*");
|
|
}
|
|
|
|
terminate() {
|
|
return this.iframe.remove();
|
|
}
|
|
}
|
|
|
|
export function createSandbox(system: System<any>) {
|
|
return new Sandbox(system, new IFrameWrapper());
|
|
}
|