WebSockets: improve JS client and demo

add methods to callback.js
automatically reconnect js client on disconnection
mixer-demo do not recreate UI on reconnection
NO-OP: indentation in message.js
make client JS reconnection optional
fix mixer-demo scrolling
minor JS client refactor
improve mixer-demo readability

1 files changed, 5 insertions, 0 deletions

diff --git a/share/web_surfaces/builtin/mixer-demo/css/main.css b/share/web_surfaces/builtin/mixer-demo/css/main.css
index 0fd812c39b..23965c3fd0 100644
--- a/share/web_surfaces/builtin/mixer-demo/css/main.css
+++ b/share/web_surfaces/builtin/mixer-demo/css/main.css
@@ -26,6 +26,7 @@ div {
     flex: 1;
     display: flex;
     flex-direction: column;
+    overflow: hidden;
     box-shadow: 0px 0px 10px #000;
 }
 
@@ -76,6 +77,10 @@ div {
     color: rgb(172,128,255);
 }
 
+.info {
+    color: rgb(99,208,230);
+}
+
 .error {
     color: rgb(249,36,114);
 }