Create new UI-side `SettingsListener`

1 files changed, 48 insertions, 0 deletions

diff --git a/android/src/main/kotlin/net/mullvad/mullvadvpn/ui/serviceconnection/SettingsListener.kt b/android/src/main/kotlin/net/mullvad/mullvadvpn/ui/serviceconnection/SettingsListener.kt
new file mode 100644
index 0000000000..f98b8a27ae
--- /dev/null
+++ b/android/src/main/kotlin/net/mullvad/mullvadvpn/ui/serviceconnection/SettingsListener.kt
@@ -0,0 +1,48 @@
+package net.mullvad.mullvadvpn.ui.serviceconnection
+
+import net.mullvad.mullvadvpn.ipc.DispatchingHandler
+import net.mullvad.mullvadvpn.ipc.Event
+import net.mullvad.mullvadvpn.model.DnsOptions
+import net.mullvad.mullvadvpn.model.RelaySettings
+import net.mullvad.mullvadvpn.model.Settings
+import net.mullvad.talpid.util.EventNotifier
+
+class SettingsListener(eventDispatcher: DispatchingHandler<Event>) {
+    val accountNumberNotifier = EventNotifier<String?>(null)
+    val dnsOptionsNotifier = EventNotifier<DnsOptions?>(null)
+    val relaySettingsNotifier = EventNotifier<RelaySettings?>(null)
+    val settingsNotifier = EventNotifier<Settings?>(null)
+
+    private var settings by settingsNotifier.notifiable()
+
+    init {
+        eventDispatcher.registerHandler(Event.SettingsUpdate::class, ::handleNewEvent)
+    }
+
+    fun onDestroy() {
+        accountNumberNotifier.unsubscribeAll()
+        dnsOptionsNotifier.unsubscribeAll()
+        relaySettingsNotifier.unsubscribeAll()
+        settingsNotifier.unsubscribeAll()
+    }
+
+    private fun handleNewEvent(event: Event.SettingsUpdate) {
+        event.settings?.let { settings -> handleNewSettings(settings) }
+    }
+
+    private fun handleNewSettings(newSettings: Settings) {
+        if (settings?.accountToken != newSettings.accountToken) {
+            accountNumberNotifier.notify(newSettings.accountToken)
+        }
+
+        if (settings?.tunnelOptions?.dnsOptions != newSettings.tunnelOptions.dnsOptions) {
+            dnsOptionsNotifier.notify(newSettings.tunnelOptions.dnsOptions)
+        }
+
+        if (settings?.relaySettings != newSettings.relaySettings) {
+            relaySettingsNotifier.notify(newSettings.relaySettings)
+        }
+
+        settings = newSettings
+    }
+}