Add connected nodes list dialog (v1.0.4)

- Tap callsign on main screen shows dialog with connected nodes
- SvxService tracks node list: ServerInfo + NODE_JOINED/NODE_LEFT events
- Bump to 1.0.4

app/src/main/java/ru/ua1zbe/svxremote/MainActivity.kt

@@ -107,6 +107,8 @@ class MainActivity : Activity(), SvxService.Listener {
 
         lblTg.setOnClickListener { showGroupsDialog() }
 
+        lblCallsign.setOnClickListener { showNodesDialog() }
+
         connectZone.setOnClickListener {
             if (connected) {
                 svc?.disconnect()
@@ -341,6 +343,18 @@ class MainActivity : Activity(), SvxService.Listener {
         mainHandler.postDelayed({ connect() }, 500)
     }
 
+    private fun showNodesDialog() {
+        val nodes = (svc?.nodeList() ?: emptyList()).sorted()
+        if (nodes.isEmpty()) {
+            toast(getString(R.string.toast_nodes_empty))
+            return
+        }
+        AlertDialog.Builder(this)
+            .setTitle(getString(R.string.nodes_title, nodes.size))
+            .setItems(nodes.toTypedArray(), null)
+            .show()
+    }
+
     private fun showGroupsDialog() {
         val groups = (settings.groups + settings.talkGroup).distinct()
         if (groups.isEmpty()) {

app/src/main/java/ru/ua1zbe/svxremote/SvxService.kt

@@ -111,9 +111,26 @@ class SvxService : Service(), ReflectorClient.Callbacks {
     }
 
     override fun onServerInfo(info: MsgParser.ServerInfo) {
+        synchronized(nodeSet) {
+            nodeSet.clear()
+            nodeSet.addAll(info.nodes)
+        }
         listener?.onServerInfo(info)
     }
 
+    private val nodeSet = LinkedHashSet<String>()
+
+    /** Текущий список подключенных узлов (копия для UI). */
+    fun nodeList(): List<String> = synchronized(nodeSet) { nodeSet.toList() }
+
+    override fun onNodeJoined(callsign: String) {
+        synchronized(nodeSet) { nodeSet.add(callsign) }
+    }
+
+    override fun onNodeLeft(callsign: String) {
+        synchronized(nodeSet) { nodeSet.remove(callsign) }
+    }
+
     override fun onTalkerStart(tg: Long, callsign: String) {
         updateNotification(getString(R.string.notif_talking, callsign))
         listener?.onTalkerStart(tg, callsign)
@@ -124,12 +141,6 @@ class SvxService : Service(), ReflectorClient.Callbacks {
         listener?.onTalkerStop(tg, callsign)
     }
 
-    override fun onNodeJoined(callsign: String) {
-    }
-
-    override fun onNodeLeft(callsign: String) {
-    }
-
     override fun onAudioPacket(packet: ByteArray, seq: Int) {
         engine.onAudioPacket(packet)
     }

app/src/main/res/values/strings.xml

@@ -12,8 +12,10 @@
     <string name="pref_groups">Группы для переключения (через запятую)</string>
     <string name="select_tg">Выбор группы</string>
     <string name="toast_groups_empty">Добавьте группы в настройках</string>
+    <string name="nodes_title">Узлы в сети (%1$d)</string>
+    <string name="toast_nodes_empty">Нет подключенных узлов</string>
     <string name="btn_save">Сохранить</string>
-    <string name="app_version">SVXhomyak — v1.0.3</string>
+    <string name="app_version">SVXhomyak — v1.0.4</string>
     <string name="saved">Сохранено</string>
     <string name="pref_callsign_hint">например UA1ZBE</string>