fixed callback issue

jrx/src/b_lib.ts

@@ -359,10 +359,15 @@ msg_sign
     let confirm_window = await browser.windows.create({url  : '../pages/msg_confirm.html',
                                                        type : 'popup'});
     console.log('b');
+    console.log(confirm_window.tabs);
     // @ts-ignore shut the fuck up
     let tabid : number = confirm_window.tabs[0].id;
     console.log('tabid', tabid);
 
+    // stupid hack because otherwise the message gets sent before the listener in the page script is created
+    await sleep(500);
+    console.log('slept');
+
     let result = await browser.tabs.sendMessage(tabid, {msg_str : msg_str});
     console.log('result', result);
 
@@ -769,3 +774,17 @@ bi_s2i
 
     return {keypairs: i_keypairs};
 }
+
+
+
+/**
+ * Hack from stack overflow somewhere to sleep for the given number of ms
+ */
+async function
+sleep
+    (ms: number)
+    : Promise<void>
+{
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+

jrx/src/msg_confirm.ts

@@ -0,0 +1,33 @@
+/**
+ * Page script for "confirm sign message" popup window 
+ */
+
+
+main();
+
+async function
+main
+    ()
+    : Promise<void>
+{
+    console.log('msg_confirm main');
+    var result = null;
+    document.getElementById('good')!.onclick = () => { console.log('click good'); result = 'good' }
+    document.getElementById('bad')!.onclick = () => { console.log('click bad'); result = 'bad' }
+
+    console.log('adding listener');
+    browser.runtime.onMessage.addListener(listener);
+    console.log('added listener');
+}
+
+// for some reason the listener here never gets triggered
+async function
+listener
+    (msg           : any,
+     _sender       : any,
+     _sendResponse : any)
+    : Promise<void>
+{
+    console.log('listener triggered');
+    console.log(msg);
+}