Load sensor setting dialog entries async

app/src/main/java/io/homeassistant/companion/android/settings/sensor/SensorDetailViewModel.kt

@@ -36,6 +36,7 @@ import io.homeassistant.companion.android.sensors.SensorReceiver
 import javax.inject.Inject
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -75,6 +76,8 @@ class SensorDetailViewModel @Inject constructor(
         )
         data class SettingDialogState(
             val setting: SensorSetting,
+            /** Indicates if this is still loading entries in the background */
+            val loading: Boolean,
             /** List of entity ID to entity pairs */
             val entries: List<Pair<String, String>>,
             /** List of selected entity ID */
@@ -225,14 +228,27 @@ class SensorDetailViewModel @Inject constructor(
     fun setServersExpanded(expand: Boolean) = viewModelScope.launch { _serversDoExpand.emit(expand) }
 
     /**
-     * Builds a SettingDialogState based on the given Sensor Setting.
+     * Builds a SettingDialogState based on the given Sensor Setting. Depending on the
+     * device and/or connection, this may take some time.
      * Should trigger a dialog open in view.
      */
-    fun onSettingWithDialogPressed(setting: SensorSetting) {
+    fun onSettingWithDialogPressed(setting: SensorSetting) = viewModelScope.launch {
+        val dialogLoadingJob = launch {
+            // In case getting entries takes too long, display a temporary loading dialog
+            delay(1000L)
+            sensorSettingsDialog = SettingDialogState(
+                setting = setting,
+                loading = true,
+                entries = listOf(),
+                entriesSelected = listOf()
+            )
+        }
+
         val listKeys = getSettingKeys(setting)
         val listEntries = getSettingEntries(setting, null)
         val state = SettingDialogState(
             setting = setting,
+            loading = false,
             entries = when {
                 setting.valueType == SensorSettingType.LIST ||
                     setting.valueType == SensorSettingType.LIST_APPS ||
@@ -256,6 +272,7 @@ class SensorDetailViewModel @Inject constructor(
                     emptyList()
             }
         )
+        dialogLoadingJob.cancel()
         sensorSettingsDialog = state
     }
 

app/src/main/java/io/homeassistant/companion/android/settings/sensor/views/SensorDetailView.kt

@@ -28,6 +28,7 @@ import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.foundation.text.selection.SelectionContainer
 import androidx.compose.material.Card
 import androidx.compose.material.Checkbox
+import androidx.compose.material.CircularProgressIndicator
 import androidx.compose.material.ContentAlpha
 import androidx.compose.material.Divider
 import androidx.compose.material.LocalContentAlpha
@@ -51,7 +52,6 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
-import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.graphics.ColorFilter
@@ -484,7 +484,6 @@ fun SensorDetailRow(
     }
 }
 
-@OptIn(ExperimentalComposeUiApi::class)
 @Composable
 fun SensorDetailSettingDialog(
     viewModel: SensorDetailViewModel,
@@ -494,14 +493,23 @@ fun SensorDetailSettingDialog(
 ) {
     val keyboardController = LocalSoftwareKeyboardController.current
     val listSettingDialog = state.setting.valueType.listType
-    val inputValue = remember { mutableStateOf(state.setting.value) }
-    val checkedValue = remember { mutableStateListOf<String>().also { it.addAll(state.entriesSelected) } }
+    val inputValue = remember(state.loading) { mutableStateOf(state.setting.value) }
+    val checkedValue = remember(state.loading) { mutableStateListOf<String>().also { it.addAll(state.entriesSelected) } }
 
     MdcAlertDialog(
         onDismissRequest = onDismiss,
         title = { Text(viewModel.getSettingTranslatedTitle(state.setting.name)) },
         content = {
-            if (listSettingDialog) {
+            if (state.loading) {
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(16.dp),
+                    horizontalArrangement = Arrangement.Center
+                ) {
+                    CircularProgressIndicator()
+                }
+            } else if (listSettingDialog) {
                 LazyColumn {
                     items(state.entries, key = { (id) -> id }) { (id, entry) ->
                         SensorDetailSettingRow(
@@ -540,7 +548,9 @@ fun SensorDetailSettingDialog(
             }
         },
         onCancel = onDismiss,
-        onSave = if (state.setting.valueType != SensorSettingType.LIST) {
+        onSave = if (state.loading) {
+            null
+        } else if (state.setting.valueType != SensorSettingType.LIST) {
             {
                 if (listSettingDialog) {
                     inputValue.value = checkedValue.joinToString().replace("[", "").replace("]", "")