They can send message to the specific sight using the window.sight.message 2nd argument function. There is a new function called sendMessage() which make more simple to send message.

1st argument of the sendMessage is a label.
2nd argument of the sendMessage is a sight ids array if it is empty [] then get everyone.
3rd argument is the data (javascript dict)

callhandler.py

@@ -1,7 +1,9 @@
 import base
+import json
 import random
 from PyQt6.QtCore import QObject, pyqtSlot
 
+
 class CallHandler(QObject):
     def __init__(self, sight):
         super().__init__()
@@ -58,6 +60,8 @@ class CallHandler(QObject):
             print("Active - " + self.sight.getId())
             base.data["active_sight"] = self.sight.getId()
 
+
+
     @pyqtSlot()
     def close(self):
         """ CLOSE ITS CHILDREN. It doesnt close the children's children just the current parent children
@@ -71,7 +75,6 @@ class CallHandler(QObject):
             base.sights.get(self.sight.getParent()).removeChild(self.sight.getId())
         base.sights.close(self.sight.getId())
 
-        
     @pyqtSlot()
     def setMaximized(self):
         self.sight.showMaximized()
@@ -84,7 +87,8 @@ class CallHandler(QObject):
     @pyqtSlot()
     def restoreDown(self):
         self.sight.showNormal()
-        self.sight.setLayoutContentMargins(1,1,1,1) #because if it is no border then I get setgeometry warning what can't be set
+        self.sight.setLayoutContentMargins(1, 1, 1,
+                                           1)  # because if it is no border then I get setgeometry warning what can't be set
 
     @pyqtSlot()
     def setFullscreen(self):
@@ -94,6 +98,7 @@ class CallHandler(QObject):
     def getTitle(self):
         return self.sight.getTitle();   
     """
+
     @pyqtSlot()
     def move(self):
         base.data["move"] = True
@@ -112,11 +117,19 @@ class CallHandler(QObject):
             new_width = 250
         self.sight.resize(new_width, new_height)
 
-    @pyqtSlot(str)
+    @pyqtSlot(str, str, str)
-    def message(self, label):
+    def message(self, label, sight_id_json, data):
-        print("label - "  + label)
+        sight_list = json.loads(sight_id_json)
+
+        print("Message - " + label)
+        if len(sight_list) == 0:
             for sight in base.sights.getSights().values():
-            sight.browser.page().runJavaScript("message('"+label+"')", self.ready)
+                sight.browser.page().runJavaScript("message('" + label + "', '"+data+"')", self.ready)
+        else:
+            for sight_id in sight_list:
+                if base.sights.checkKey(sight_id):
+                    base.sights.get(sight_id).browser.page().runJavaScript("message('" + label + "', '"+data+"')", self.ready)
 
     def ready(self, returnValue):
+        if returnValue is not None:
             print(returnValue)

place/js/sight.js

@@ -120,6 +120,20 @@ if(navigator.userAgent.indexOf("QtWebEngine") > 0) {
 function addData(key, value, is_global = false) {
 	window.sight.addData(key,value, is_global);
 }
+
+/*
+label = any unique short message (one word)
+sight_id_array = a id list of those sight where the message will be sent to
+data = it is a javascript dict (this can contains any key and value) which will be sent
+ */
+function sendMessage(label, sight_id_array = [], data = {}) {
+	window.sight.message(label, JSON.stringify(sight_id_array), JSON.stringify(data));
+}
+
+function eventMsg(label, where, data) {
+	return "["+label+"] - " +where+" ("+data+")";
+}
+
 function getData(key, is_global = false) {
 	window.sight.getData(key, is_global, function(result) {
 		alert(result)

place/templates/base/main.html

@@ -24,12 +24,17 @@
 
 			});
 
-			function message(label) {
+			function message(label, data) {
 				if(label === "price_change") {
-					window.sight.message("changed_now")
+					sendMessage("changed_now")
-					return "I update my price - "+label
+					return "I update my price - "+label+"; DATA - "+data
+				}
+
+				if(label === "test") {
+					return "MAIN GOT TEST MESSAGE"+"; DATA - "+data
 				}
 			}
+
 		</script>
 	</head>
 	<body>

place/templates/base/other.html

@@ -9,12 +9,21 @@
 		<script>
 			$(document).ready(function(){
 				//getData("name", true);
-				window.sight.message("price_change")
+				sendMessage("price_change")
+
+				dict = {}
+				dict["account_id"] = 10227;
+				dict["account_name"] = "Test Bank";
+				dict["details"] = {};
+				dict["details"]["phone"] = 123456789
+				dict["details"]["place"] = "New York"
+				sendMessage("test", ["other","main"], dict)
 			});
 
-			function message(label) {
+			function message(label,data) {
-				if(label === "changed_now") {
+				if(label === "test") {
-					return "everything alright - " + label
+					data_dict = JSON.parse(data)
+					return "DATA - "+data_dict["account_name"] + " - " + data_dict["details"]["place"]
 				}
 			}
 		</script>

sightfactory.py

@@ -51,29 +51,41 @@ class SightFactory():
     def get(self, id):
         if self.checkKey(id):
             return self.list[id]
-        print("This '"+str(id)+"' id isn't exist to get!")
+        """print("This '"+str(id)+"' id isn't exist to get!")"""
         
     def close(self, id):
         if self.checkKey(id):
+            self.eventMessage("CLOSING", "sight", id)
             if id == "main":
                 print("Program Exit!")
                 base.app.exit(0)
             self.list[id].close()
             self.list[id].deleteLater()
             del self.list[id]
-            print("The '"+str(id)+"' is closed now!")
+            """print("The '"+str(id)+"' is closed now!")"""
+            self.eventMessage("CLOSED", "sight", id)
             return True
         else:
             print("The '"+str(id)+"' isn't exist'")
         return False
 
+    def eventMessage(self, label, where, data):
+        for sight in self.list.values():
+            sight.browser.page().runJavaScript("eventMsg('" + label + "', '" + where + "', '" + data + "')", self.ready)
+
+    def ready(self, returnValue):
+        if returnValue is not None:
+            print(returnValue)
+
     def processes(self):
+        if len(self.list) > 0:
             print(self.list)
         
     def checkKey(self, id):
         if id in self.list:
             return True
         return False
+
     def addGlobalData(self, key, value):
         self.data[key] = value
     def getGlobauniquelData(self, key):