@gemini-wallet/core/src/utils/popup.ts

Core SDK for Gemini Wallet integration with popup communication

import { rpcErrors } from "@metamask/rpc-errors";

const POPUP_WIDTH = 420;
const POPUP_HEIGHT = 650;

export const openPopup = (url: URL): Window => {
  const left = (window.innerWidth - POPUP_WIDTH) / 2 + window.screenX;
  const top = (window.innerHeight - POPUP_HEIGHT) / 2 + window.screenY;

  const popupId = `wallet_${window?.crypto?.randomUUID()}`;
  const popup = window.open(url, popupId, `width=${POPUP_WIDTH}, height=${POPUP_HEIGHT}, left=${left}, top=${top}`);

  popup?.focus();

  if (!popup) {
    throw rpcErrors.internal("Pop up window failed to open");
  }

  return popup;
};

export const closePopup = (popup: Window | null) => {
  if (popup && !popup.closed) {
    popup.opener?.focus();
    popup.close();
  }
};