Create initial UI-side `CustomDns` class

1 files changed, 28 insertions, 0 deletions

diff --git a/android/src/main/kotlin/net/mullvad/mullvadvpn/ui/serviceconnection/CustomDns.kt b/android/src/main/kotlin/net/mullvad/mullvadvpn/ui/serviceconnection/CustomDns.kt
new file mode 100644
index 0000000000..7b2b506f29
--- /dev/null
+++ b/android/src/main/kotlin/net/mullvad/mullvadvpn/ui/serviceconnection/CustomDns.kt
@@ -0,0 +1,28 @@
+package net.mullvad.mullvadvpn.ui.serviceconnection
+
+import android.os.Messenger
+import java.net.InetAddress
+import net.mullvad.talpid.util.EventNotifier
+
+class CustomDns(val connection: Messenger, val settingsListener: SettingsListener) {
+    val onEnabledChanged = EventNotifier(false)
+    val onDnsServersChanged = EventNotifier<List<InetAddress>>(emptyList())
+
+    init {
+        settingsListener.dnsOptionsNotifier.subscribe(this) { maybeDnsOptions ->
+            maybeDnsOptions?.let { dnsOptions ->
+                synchronized(this) {
+                    onEnabledChanged.notifyIfChanged(dnsOptions.custom)
+                    onDnsServersChanged.notifyIfChanged(dnsOptions.addresses)
+                }
+            }
+        }
+    }
+
+    fun onDestroy() {
+        onEnabledChanged.unsubscribeAll()
+        onDnsServersChanged.unsubscribeAll()
+
+        settingsListener.dnsOptionsNotifier.unsubscribe(this)
+    }
+}