refactor: move node detail logs to shared ViewModel

app/src/main/java/com/geeksville/mesh/ui/NavGraph.kt

@@ -38,6 +38,7 @@ import androidx.compose.material.icons.filled.Usb
 import androidx.compose.material.icons.filled.Wifi
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.platform.ComposeView
@@ -129,20 +130,11 @@ class NavGraphFragment : ScreenFragment("NavGraph"), Logging {
 
                 AppCompatTheme {
                     val navController: NavHostController = rememberNavController()
-                    // Get current back stack entry
-                    // val backStackEntry by navController.currentBackStackEntryAsState()
-                    // Get the name of the current screen
-                    // val currentScreen = backStackEntry?.destination?.route?.let { route ->
-                    //     NavRoute.entries.find { it.name == route }?.title
-                    // }
-
                     Scaffold(
                         topBar = {
                             MeshAppBar(
                                 currentScreen = node?.user?.longName
                                     ?: stringResource(R.string.unknown_username),
-                                // canNavigateBack = navController.previousBackStackEntry != null,
-                                // navigateUp = { navController.navigateUp() },
                                 canNavigateBack = true,
                                 navigateUp = {
                                     if (navController.previousBackStackEntry != null) {
@@ -233,7 +225,7 @@ private fun MeshAppBar(
                 IconButton(onClick = navigateUp) {
                     Icon(
                         imageVector = Icons.AutoMirrored.Filled.ArrowBack,
-                        null,
+                        contentDescription = stringResource(id = R.string.navigate_back),
                     )
                 }
             }
@@ -256,9 +248,6 @@ fun NavGraph(
     val radioConfigState by viewModel.radioConfigState.collectAsStateWithLifecycle()
     val isWaiting = radioConfigState.responseState.isWaiting()
 
-    val metricsViewModel: MetricsViewModel = hiltViewModel()
-    val metricsState by metricsViewModel.state.collectAsStateWithLifecycle()
-
     if (isWaiting) {
         PacketResponseStateDialog(
             state = radioConfigState.responseState,
@@ -282,27 +271,25 @@ fun NavGraph(
         modifier = modifier,
     ) {
         composable("NodeDetails") {
-            NodeDetailsScreen(
+            NodeDetailScreen(
                 node = node,
-                metricsState = metricsState,
+            ) { navController.navigate(route = it) }
-                onNavigate = { navController.navigate(route = it) },
-                setSelectedNode = metricsViewModel::setSelectedNode,
-            )
         }
         composable("DeviceMetrics") {
-            DeviceMetricsScreen(metricsState.deviceMetrics)
+            val parentEntry = remember { navController.getBackStackEntry("NodeDetails") }
+            DeviceMetricsScreen(hiltViewModel<MetricsViewModel>(parentEntry))
         }
         composable("EnvironmentMetrics") {
-            EnvironmentMetricsScreen(
+            val parentEntry = remember { navController.getBackStackEntry("NodeDetails") }
-                metricsState.environmentMetrics,
+            EnvironmentMetricsScreen(hiltViewModel<MetricsViewModel>(parentEntry))
-                metricsState.environmentDisplayFahrenheit,
-            )
-        }
-        composable("TracerouteList") {
-            TracerouteLogScreen(metricsViewModel)
         }
         composable("SignalMetrics") {
-            SignalMetricsScreen(metricsState.signalMetrics)
+            val parentEntry = remember { navController.getBackStackEntry("NodeDetails") }
+            SignalMetricsScreen(hiltViewModel<MetricsViewModel>(parentEntry))
+        }
+        composable("TracerouteList") {
+            val parentEntry = remember { navController.getBackStackEntry("NodeDetails") }
+            TracerouteLogScreen(hiltViewModel<MetricsViewModel>(parentEntry))
         }
         composable("RadioConfig") {
             RadioConfigScreen(

app/src/main/java/com/geeksville/mesh/ui/NodeDetail.kt

@@ -46,6 +46,7 @@ import androidx.compose.material.icons.filled.WaterDrop
 import androidx.compose.material.icons.filled.Work
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -56,9 +57,12 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.tooling.preview.PreviewParameter
 import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.geeksville.mesh.R
 import com.geeksville.mesh.database.entity.NodeEntity
 import com.geeksville.mesh.model.MetricsState
+import com.geeksville.mesh.model.MetricsViewModel
 import com.geeksville.mesh.ui.components.PreferenceCategory
 import com.geeksville.mesh.ui.preview.NodeEntityPreviewParameterProvider
 import com.geeksville.mesh.ui.theme.AppTheme
@@ -67,21 +71,21 @@ import java.util.concurrent.TimeUnit
 import kotlin.math.ln
 
 @Composable
-fun NodeDetailsScreen(
+fun NodeDetailScreen(
     node: NodeEntity?,
-    metricsState: MetricsState,
+    viewModel: MetricsViewModel = hiltViewModel(),
     modifier: Modifier = Modifier,
     onNavigate: (String) -> Unit,
-    setSelectedNode: (Int) -> Unit,
 ) {
+    val state by viewModel.state.collectAsStateWithLifecycle()
+
     if (node != null) {
         LaunchedEffect(node.num) {
-            setSelectedNode(node.num)
+            viewModel.setSelectedNode(node.num)
         }
-
+        NodeDetailList(
-        NodeDetailsItemList(
             node = node,
-            metricsState = metricsState,
+            metricsState = state,
             onNavigate = onNavigate,
             modifier = modifier,
         )
@@ -97,7 +101,7 @@ fun NodeDetailsScreen(
 
 @Suppress("LongMethod")
 @Composable
-private fun NodeDetailsItemList(
+private fun NodeDetailList(
     node: NodeEntity,
     metricsState: MetricsState,
     modifier: Modifier = Modifier,
@@ -453,6 +457,6 @@ private fun NodeDetailsPreview(
     node: NodeEntity
 ) {
     AppTheme {
-        NodeDetailsItemList(node, MetricsState.Empty)
+        NodeDetailList(node, MetricsState.Empty)
     }
 }

app/src/main/java/com/geeksville/mesh/ui/components/DeviceMetrics.kt

@@ -34,8 +34,11 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.geeksville.mesh.R
 import com.geeksville.mesh.TelemetryProtos.Telemetry
+import com.geeksville.mesh.model.MetricsViewModel
 import com.geeksville.mesh.ui.BatteryInfo
 import com.geeksville.mesh.ui.components.CommonCharts.X_AXIS_SPACING
 import com.geeksville.mesh.ui.components.CommonCharts.MS_PER_SEC
@@ -56,8 +59,10 @@ private val LEGEND_DATA = listOf(
 )
 
 @Composable
-fun DeviceMetricsScreen(telemetries: List<Telemetry>) {
+fun DeviceMetricsScreen(
-
+    viewModel: MetricsViewModel = hiltViewModel(),
+) {
+    val state by viewModel.state.collectAsStateWithLifecycle()
     var displayInfoDialog by remember { mutableStateOf(false) }
 
     Column {
@@ -76,14 +81,14 @@ fun DeviceMetricsScreen(telemetries: List<Telemetry>) {
             modifier = Modifier
                 .fillMaxWidth()
                 .fillMaxHeight(fraction = 0.33f),
-            telemetries.reversed(),
+            state.deviceMetrics.reversed(),
             promptInfoDialog = { displayInfoDialog = true }
         )
         /* Device Metric Cards */
         LazyColumn(
             modifier = Modifier.fillMaxSize()
         ) {
-            items(telemetries) { telemetry -> DeviceMetricsCard(telemetry) }
+            items(state.deviceMetrics) { telemetry -> DeviceMetricsCard(telemetry) }
         }
     }
 }

app/src/main/java/com/geeksville/mesh/ui/components/EnvironmentMetrics.kt

@@ -37,9 +37,12 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.geeksville.mesh.R
 import com.geeksville.mesh.TelemetryProtos.Telemetry
 import com.geeksville.mesh.copy
+import com.geeksville.mesh.model.MetricsViewModel
 import com.geeksville.mesh.ui.components.CommonCharts.X_AXIS_SPACING
 import com.geeksville.mesh.ui.components.CommonCharts.MS_PER_SEC
 import com.geeksville.mesh.ui.components.CommonCharts.TIME_FORMAT
@@ -69,15 +72,19 @@ private val LEGEND_DATA = listOf(
 )
 
 @Composable
-fun EnvironmentMetricsScreen(telemetries: List<Telemetry>, environmentDisplayFahrenheit: Boolean) {
+fun EnvironmentMetricsScreen(
+    viewModel: MetricsViewModel = hiltViewModel(),
+) {
+    val state by viewModel.state.collectAsStateWithLifecycle()
+
     /* Convert Celsius to Fahrenheit */
     @Suppress("MagicNumber")
     fun celsiusToFahrenheit(celsius: Float): Float {
         return (celsius * 1.8F) + 32
     }
 
-    val processedTelemetries: List<Telemetry> = if (environmentDisplayFahrenheit) {
+    val processedTelemetries: List<Telemetry> = if (state.environmentDisplayFahrenheit) {
-        telemetries.map { telemetry ->
+        state.environmentMetrics.map { telemetry ->
             val temperatureFahrenheit =
                 celsiusToFahrenheit(telemetry.environmentMetrics.temperature)
             telemetry.copy {
@@ -86,7 +93,7 @@ fun EnvironmentMetricsScreen(telemetries: List<Telemetry>, environmentDisplayFah
             }
         }
     } else {
-        telemetries
+        state.environmentMetrics
     }
 
     var displayInfoDialog by remember { mutableStateOf(false) }
@@ -117,7 +124,7 @@ fun EnvironmentMetricsScreen(telemetries: List<Telemetry>, environmentDisplayFah
             items(processedTelemetries) { telemetry ->
                 EnvironmentMetricsCard(
                     telemetry,
-                    environmentDisplayFahrenheit
+                    state.environmentDisplayFahrenheit
                 )
             }
         }

app/src/main/java/com/geeksville/mesh/ui/components/SignalMetrics.kt

@@ -36,8 +36,11 @@ import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.geeksville.mesh.MeshProtos.MeshPacket
 import com.geeksville.mesh.R
+import com.geeksville.mesh.model.MetricsViewModel
 import com.geeksville.mesh.ui.components.CommonCharts.MS_PER_SEC
 import com.geeksville.mesh.ui.components.CommonCharts.LINE_LIMIT
 import com.geeksville.mesh.ui.components.CommonCharts.TEXT_PAINT_ALPHA
@@ -61,8 +64,10 @@ private val LEGEND_DATA = listOf(
 )
 
 @Composable
-fun SignalMetricsScreen(meshPackets: List<MeshPacket>) {
+fun SignalMetricsScreen(
-
+    viewModel: MetricsViewModel = hiltViewModel(),
+) {
+    val state by viewModel.state.collectAsStateWithLifecycle()
     var displayInfoDialog by remember { mutableStateOf(false) }
 
     Column {
@@ -81,14 +86,14 @@ fun SignalMetricsScreen(meshPackets: List<MeshPacket>) {
             modifier = Modifier
                 .fillMaxWidth()
                 .fillMaxHeight(fraction = 0.33f),
-            meshPackets = meshPackets.reversed(),
+            meshPackets = state.signalMetrics.reversed(),
             promptInfoDialog = { displayInfoDialog = true }
         )
 
         LazyColumn(
             modifier = Modifier.fillMaxSize()
         ) {
-            items(meshPackets) { meshPacket -> SignalMetricsCard(meshPacket) }
+            items(state.signalMetrics) { meshPacket -> SignalMetricsCard(meshPacket) }
         }
     }
 }