From 47ac68c34adb6897d2bce69da17e9fb964030972 Mon Sep 17 00:00:00 2001
From: HF <hf@pixelplanet.fun>
Date: Mon, 5 Sep 2022 11:10:22 +0200
Subject: [PATCH] broadcast messages from one popup over parent to others

---
 src/core/popUps.js             | 10 ++++++++--
 src/store/middleware/parent.js |  4 +++-
 src/store/middleware/popUps.js |  6 +++++-
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/core/popUps.js b/src/core/popUps.js
index 609a9f8..dec3c2c 100644
--- a/src/core/popUps.js
+++ b/src/core/popUps.js
@@ -24,7 +24,11 @@ class PopUps {
     if (~pos) this.wins.splice(pos, 1);
   }
 
-  dispatch(msg) {
+  /*
+   * send message to all popups
+   * except the ignore one
+   */
+  dispatch(msg, ignore = null) {
     const { wins } = this;
     try {
       for (let i = 0; i < wins.length; i += 1) {
@@ -34,7 +38,9 @@ class PopUps {
           i -= 1;
           continue;
         }
-        win.postMessage(msg, this.origin);
+        if (win !== ignore) {
+          win.postMessage(msg, this.origin);
+        }
       }
     } catch {
       return false;
diff --git a/src/store/middleware/parent.js b/src/store/middleware/parent.js
index 318e2bc..3b52725 100644
--- a/src/store/middleware/parent.js
+++ b/src/store/middleware/parent.js
@@ -17,7 +17,9 @@ window.addEventListener('beforeunload', () => {
 
 export default (store) => (next) => (action) => {
   if (action instanceof MessageEvent) {
-    if (action.origin !== origin) {
+    if (action.origin !== origin
+      || !action.data.type
+    ) {
       return null;
     }
     if (action.data.type === 't/UNLOAD') {
diff --git a/src/store/middleware/popUps.js b/src/store/middleware/popUps.js
index 98eab20..1f9622a 100644
--- a/src/store/middleware/popUps.js
+++ b/src/store/middleware/popUps.js
@@ -9,7 +9,9 @@ import popUps from '../../core/popUps';
 
 export default (store) => (next) => (action) => {
   if (action instanceof MessageEvent) {
-    if (action.origin !== window.location.origin) {
+    if (action.origin !== window.location.origin
+      || !action.data.type
+    ) {
       return null;
     }
     if (action.data.type === 't/UNLOAD') {
@@ -23,6 +25,8 @@ export default (store) => (next) => (action) => {
       );
       popUps.add(action.source);
       console.log('popup added');
+    } else if (action.data.type.startsWith('s/')) {
+      popUps.dispatch(action.data, action.source);
     }
     return next(action.data);
   }