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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | 2x | import { Logger } from '@metamask/logger';
import type { VatId, VatConfig } from '@metamask/ocap-kernel';
import { createWindow } from '@metamask/snaps-utils';
import type { initializeMessageChannel } from '@metamask/streams/browser';
import type { VatWorker } from './PlatformServicesServer.ts';
type Options = {
id: VatId;
getPort: typeof initializeMessageChannel;
logger: Logger;
iframeUri: string;
testId?: string;
};
/**
* Create a vat worker that launches a new window with an iframe.
*
* @param options - The options for the vat worker.
* @param options.id - The id of the vat.
* @param options.getPort - The function to get the port for the vat.
* @param options.logger - The logger for the vat.
* @param options.iframeUri - The uri of the iframe.
* @param options.testId - The test id of the iframe element, for use in e2e tests.
* @returns The vat worker.
*/
export const makeIframeVatWorker = ({
id,
getPort,
logger,
iframeUri,
testId = 'ocap-iframe',
}: Options): VatWorker => {
const vatHtmlId = `ocap-iframe-${id}`;
return {
launch: async (_vatConfig: VatConfig) => {
const newWindow = await createWindow({
uri: `${iframeUri}?vatId=${id}`,
id: vatHtmlId,
testId,
});
const port = await getPort((message, transfer) =>
newWindow.postMessage(message, '*', transfer),
);
return [port, newWindow];
},
terminate: async (): Promise<null> => {
const iframe = document.getElementById(vatHtmlId);
if (iframe === null) {
logger.error(
`iframe of vat with id "${id}" already removed from DOM (#${vatHtmlId})`,
);
return null;
}
iframe.remove();
return null;
},
};
};
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