Chat: Message Streaming demo - fix race condition on sendButton action change & remove unused variables

Author: Ruslan Farkhutdinov

apps/demos/Demos/Chat/MessageStreaming/jQuery/data.js

@@ -2,7 +2,6 @@ const deployment = 'gpt-4o-mini';
 const apiVersion = '2024-02-01';
 const endpoint = 'https://public-api.devexpress.com/demo-openai';
 const apiKey = 'DEMO';
-const CHAT_DISABLED_CLASS = 'chat-disabled';
 const ALERT_TIMEOUT = 1000 * 60;
 const user = {
   id: 'user',

apps/demos/Demos/Chat/MessageStreaming/jQuery/index.js

@@ -104,6 +104,7 @@ $(() => {
       sendButtonOptions: {
         action: 'send',
         icon: 'arrowright',
+        onClick: null,
       },
     });
   }
@@ -127,7 +128,7 @@ $(() => {
 
   async function processMessageSending(message) {
     abortController = new AbortController();
-    setMainButtonToStop();
+    setTimeout(setMainButtonToStop, 0);
 
     messages.push({ role: 'user', content: message.text });
     instance.option({ typingUsers: [assistant] });
@@ -164,7 +165,7 @@ $(() => {
 
       instance.option({ typingUsers: [] });
       messages.push({ role: 'assistant', content: buffer });
-    } catch {
+    } catch (e) {
       instance.option({ typingUsers: [] });
 
       messages.pop();
@@ -298,14 +299,14 @@ $(() => {
         action: 'send',
       },
       onMessageEntered: (e) => {
-        const { message, event } = e;
+        const { message } = e;
 
         dataSource
           .store()
           .push([{ type: 'insert', data: { id: Date.now(), ...message } }]);
 
         if (!instance.option('alerts').length) {
-          processMessageSending(message, event);
+          processMessageSending(message);
         }
       },
       messageTemplate: (data, element) => {

apps/demos/menuMeta.json

@@ -4202,7 +4202,7 @@
           },
           {
             "Name": "Message Streaming",
-            "Equivalents": "Response Streaming, Streaming Responses, Streaming AI Responses, Streaming Output, Stop Request, Stop Request Execution, Cancel Request, Stop Response Generation, Cancel AI Request, Stop Streaming, Abort AI Request", 
+            "Equivalents": "Response Streaming, Streaming Responses, Streaming AI Responses, Streaming Output, Stop Request, Stop Request Execution, Cancel Request, Stop Response Generation, Cancel AI Request, Stop Streaming, Abort AI Request",
             "Demos": [
               {
                 "Title": "Message Streaming",