Show a warning in weather settings if location permission is missing

i18n/src/main/res/values-de/strings.xml

@@ -420,4 +420,7 @@
 
     <string name="preference_category_grid">Raster</string>
     <string name="preference_grid_column_count">Spaltenanzahl</string>
+
+    <string name="grant_permission">Gewähren</string>
+    <string name="missing_permission_auto_location">Standortzugriff wird benötigt, um den Standort automatisch zu ermitteln</string>
 </resources>

i18n/src/main/res/values/strings.xml

@@ -458,4 +458,7 @@
 
     <string name="preference_category_grid">Grid</string>
     <string name="preference_grid_column_count">Number of columns</string>
+
+    <string name="grant_permission">Grant</string>
+    <string name="missing_permission_auto_location">Location access is required to determine the location automatically</string>
 </resources>

ui/src/main/java/de/mm20/launcher2/ui/component/MissingPermissionBanner.kt

@@ -11,7 +11,9 @@ import androidx.compose.material3.*
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
+import de.mm20.launcher2.ui.R
 
 @Composable
 fun MissingPermissionBanner(
@@ -53,7 +55,7 @@ fun MissingPermissionBanner(
                 TextButton(
                     modifier = Modifier.padding(start = 8.dp),
                     onClick = onClick) {
-                    Text("Grant", style = MaterialTheme.typography.labelLarge)
+                    Text(stringResource(R.string.grant_permission), style = MaterialTheme.typography.labelLarge)
                 }
 
             }

ui/src/main/java/de/mm20/launcher2/ui/settings/weather/WeatherScreen.kt

@@ -1,5 +1,7 @@
 package de.mm20.launcher2.ui.settings.weather
 
+import androidx.appcompat.app.AppCompatActivity
+import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
@@ -18,12 +20,14 @@ import androidx.compose.runtime.*
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Dialog
 import androidx.lifecycle.viewmodel.compose.viewModel
 import de.mm20.launcher2.preferences.Settings.WeatherSettings.WeatherProvider
 import de.mm20.launcher2.ui.R
+import de.mm20.launcher2.ui.component.MissingPermissionBanner
 import de.mm20.launcher2.ui.component.preferences.*
 import de.mm20.launcher2.weather.WeatherLocation
 import kotlinx.coroutines.launch
@@ -31,6 +35,7 @@ import kotlinx.coroutines.launch
 @Composable
 fun WeatherScreen() {
     val viewModel: WeatherScreenVM = viewModel()
+    val context = LocalContext.current
 
     PreferenceScreen(title = stringResource(R.string.preference_screen_weather)) {
         item {
@@ -62,6 +67,16 @@ fun WeatherScreen() {
         }
         item {
             PreferenceCategory(title = stringResource(R.string.preference_category_location)) {
+                val hasPermission by viewModel.hasLocationPermission.observeAsState()
+                AnimatedVisibility(hasPermission == false) {
+                    MissingPermissionBanner(
+                        text = stringResource(R.string.missing_permission_auto_location),
+                        onClick = {
+                            viewModel.requestLocationPermission(context as AppCompatActivity)
+                        },
+                        modifier = Modifier.padding(16.dp)
+                    )
+                }
                 val autoLocation by viewModel.autoLocation.observeAsState(false)
                 SwitchPreference(
                     title = stringResource(R.string.preference_automatic_location),
@@ -181,7 +196,9 @@ fun LocationPreference(
                     }
                     TextButton(
                         onClick = { showDialog = false },
-                        modifier = Modifier.align(Alignment.End).padding(24.dp)
+                        modifier = Modifier
+                            .align(Alignment.End)
+                            .padding(24.dp)
                     ) {
                         Text(
                             text = stringResource(R.string.close),

ui/src/main/java/de/mm20/launcher2/ui/settings/weather/WeatherScreenVM.kt

@@ -1,9 +1,12 @@
 package de.mm20.launcher2.ui.settings.weather
 
+import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.asLiveData
 import androidx.lifecycle.viewModelScope
+import de.mm20.launcher2.permissions.PermissionGroup
+import de.mm20.launcher2.permissions.PermissionsManager
 import de.mm20.launcher2.preferences.LauncherDataStore
 import de.mm20.launcher2.preferences.Settings.WeatherSettings
 import de.mm20.launcher2.weather.WeatherLocation
@@ -19,6 +22,7 @@ import kotlin.coroutines.coroutineContext
 class WeatherScreenVM : ViewModel(), KoinComponent {
     private val repository: WeatherRepository by inject()
     private val dataStore: LauncherDataStore by inject()
+    private val permissionsManager: PermissionsManager by inject()
 
     val imperialUnits = dataStore.data.map { it.weather.imperialUnits }.asLiveData()
     fun setImperialUnits(imperialUnits: Boolean) {
@@ -65,6 +69,12 @@ class WeatherScreenVM : ViewModel(), KoinComponent {
         }
     }
 
+    val hasLocationPermission = permissionsManager.hasPermission(PermissionGroup.Location).asLiveData()
+
+    fun requestLocationPermission(activity: AppCompatActivity) {
+        permissionsManager.requestPermission(activity, PermissionGroup.Location)
+    }
+
     val isSearchingLocation = MutableLiveData(false)
     val locationResults = MutableLiveData<List<WeatherLocation>>(emptyList())