Update enable state of create room button

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomEvents.kt

@@ -23,4 +23,5 @@ sealed interface ConfigureRoomEvents {
     data class TopicChanged(val topic: String) : ConfigureRoomEvents
     data class AvatarUriChanged(val uri: Uri?) : ConfigureRoomEvents
     data class RoomPrivacyChanged(val privacy: RoomPrivacy?) : ConfigureRoomEvents
+    object CreateRoom : ConfigureRoomEvents
 }

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomPresenter.kt

@@ -43,6 +43,10 @@ class ConfigureRoomPresenter @AssistedInject constructor(
         var topic by rememberSaveable { mutableStateOf("") }
         var avatarUri by rememberSaveable { mutableStateOf<Uri?>(null) }
         var privacy by rememberSaveable { mutableStateOf<RoomPrivacy?>(null) }
+        val isCreateButtonEnabled by rememberSaveable(roomName, privacy) {
+            val enabled = roomName.isNotEmpty() && privacy != null
+            mutableStateOf(enabled)
+        }
 
         fun handleEvents(event: ConfigureRoomEvents) {
             when (event) {
@@ -50,6 +54,7 @@ class ConfigureRoomPresenter @AssistedInject constructor(
                 is ConfigureRoomEvents.RoomNameChanged -> roomName = event.name
                 is ConfigureRoomEvents.TopicChanged -> topic = event.topic
                 is ConfigureRoomEvents.RoomPrivacyChanged -> privacy = event.privacy
+                ConfigureRoomEvents.CreateRoom -> Unit // TODO
             }
         }
 
@@ -59,6 +64,7 @@ class ConfigureRoomPresenter @AssistedInject constructor(
             topic = topic,
             avatarUri = avatarUri,
             privacy = privacy,
+            isCreateButtonEnabled = isCreateButtonEnabled,
             eventSink = ::handleEvents,
         )
     }

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomState.kt

@@ -26,5 +26,6 @@ data class ConfigureRoomState(
     val topic: String,
     val avatarUri: Uri?,
     val privacy: RoomPrivacy?,
+    val isCreateButtonEnabled: Boolean,
     val eventSink: (ConfigureRoomEvents) -> Unit
 )

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomStateProvider.kt

@@ -24,7 +24,6 @@ open class ConfigureRoomStateProvider : PreviewParameterProvider<ConfigureRoomSt
     override val values: Sequence<ConfigureRoomState>
         get() = sequenceOf(
             aConfigureRoomState(),
-            // Add other state here
         )
 }
 
@@ -34,5 +33,6 @@ fun aConfigureRoomState() = ConfigureRoomState(
     topic = "",
     avatarUri = null,
     privacy = null,
+    isCreateButtonEnabled = false,
     eventSink = {}
 )

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomView.kt

@@ -71,16 +71,15 @@ fun ConfigureRoomView(
     state: ConfigureRoomState,
     modifier: Modifier = Modifier,
     onBackPressed: () -> Unit = {},
-    onCreatePressed: () -> Unit = {},
 ) {
     val selectedUsersListState = rememberLazyListState()
     Scaffold(
         modifier = modifier,
         topBar = {
             ConfigureRoomToolbar(
-                isNextActionEnabled = false,
+                isNextActionEnabled = state.isCreateButtonEnabled,
                 onBackPressed = onBackPressed,
-                onNextPressed = onCreatePressed,
+                onNextPressed = { state.eventSink(ConfigureRoomEvents.CreateRoom) },
             )
         }
     ) { padding ->
@@ -326,6 +325,7 @@ fun RoomPrivacyOption(
     }
 }
 
+// Move this composable to design module if we want to reuse it in other screens
 @Composable
 fun LabelledTextField(
     label: String,