add callbacks that allow the frontend to query the current user settings after initialization

Author: jannickheisch

android/tinySSB/app/src/main/assets/web/tremola.js

@@ -1139,6 +1139,11 @@ function b2f_new_event(e) { // incoming SSB log event: we get map with three ent
     }
 }
 
+// backend callback method when calling backend("settings:get")
+function b2f_get_settings(settings) {
+    tremola.settings = settings
+}
+
 function b2f_new_contact(fid) {
     if ((fid in tremola.contacts)) // do not overwrite existing entry
         return

android/tinySSB/app/src/main/java/nz/scuttlebutt/tremolavossbol/WebAppInterface.kt

@@ -242,6 +242,10 @@ class WebAppInterface(val act: MainActivity, val webView: WebView) {
             "settings:set" -> {
                 act.settings!!.set(args[1], args[2])
             }
+            "settings:get" -> {
+                val settings = act.settings!!.getSettings()
+                act.wai.eval("b2f_get_settings('${settings}')")
+            }
             else -> {
                 Log.d("onFrontendRequest", "unknown")
             }