Improvement feature circle discussion (#977)

* Improvment circle discussion
 - Change to lissen start event of WebRTC connection

* Update help allow navigator and waring message
 - Show warning message.
 - Use help camera allow setting to show modal and help user.
 - Change feature to show the modal only when user have need the information on allow navigator access

* Create soud for video discussion

front/src/WebRtc/LayoutManager.ts

@@ -346,7 +346,7 @@ class LayoutManager {
         userInputManager.addSpaceEventListner(callBack);
     }
 
-    public removeActionButton(id: string, userInputManager: UserInputManager){
+    public removeActionButton(id: string, userInputManager?: UserInputManager){
         //delete previous element
         const previousDiv = this.actionButtonInformation.get(id);
         if(previousDiv){
@@ -354,10 +354,45 @@ class LayoutManager {
             this.actionButtonInformation.delete(id);
         }
         const previousEventCallback = this.actionButtonTrigger.get(id);
-        if(previousEventCallback){
+        if(previousEventCallback && userInputManager){
             userInputManager.removeSpaceEventListner(previousEventCallback);
         }
     }
+
+    public addInformation(id: string, text: string,  callBack?: Function, userInputManager?: UserInputManager){
+        //delete previous element
+        for ( const [key, value] of this.actionButtonInformation ) {
+            this.removeActionButton(key, userInputManager);
+        }
+
+        //create div and text html component
+        const p = document.createElement('p');
+        p.classList.add('action-body');
+        p.innerText = text;
+
+        const div = document.createElement('div');
+        div.classList.add('action');
+        div.classList.add(id);
+        div.id = id;
+        div.appendChild(p);
+
+        this.actionButtonInformation.set(id, div);
+
+        const mainContainer = HtmlUtils.getElementByIdOrFail<HTMLDivElement>('main-container');
+        mainContainer.appendChild(div);
+        //add trigger action
+        if(callBack){
+            div.onpointerdown = () => {
+                callBack();
+                this.removeActionButton(id, userInputManager);
+            };
+        }
+
+        //remove it after 10 sec
+        setTimeout(() => {
+            this.removeActionButton(id, userInputManager);
+        }, 10000)
+    }
 }
 
 const layoutManager = new LayoutManager();