Add missing permission banner to app shortcut results

ui/src/main/java/de/mm20/launcher2/ui/launcher/search/SearchVM.kt

@@ -195,4 +195,23 @@ class SearchVM : ViewModel(), KoinComponent {
         }
     }
 
+    val missingAppShortcutPermission = combine(
+        permissionsManager.hasPermission(PermissionGroup.AppShortcuts),
+        dataStore.data.map { it.appShortcutSearch.enabled }.distinctUntilChanged()
+    ) { perm, enabled -> !perm && enabled }
+
+    fun requestAppShortcutPermission(context: AppCompatActivity) {
+        permissionsManager.requestPermission(context, PermissionGroup.AppShortcuts)
+    }
+
+    fun disableAppShortcutSearch() {
+        viewModelScope.launch {
+            dataStore.updateData {
+                it.toBuilder()
+                    .setAppShortcutSearch(it.appShortcutSearch.toBuilder().setEnabled(false))
+                    .build()
+            }
+        }
+    }
+
 }

ui/src/main/java/de/mm20/launcher2/ui/launcher/search/appshortcuts/AppShortcutResults.kt

@@ -1,30 +1,63 @@
 package de.mm20.launcher2.ui.launcher.search.appshortcuts
 
+import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ColumnScope
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 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.lifecycle.viewmodel.compose.viewModel
+import de.mm20.launcher2.ui.R
 import de.mm20.launcher2.ui.component.LauncherCard
+import de.mm20.launcher2.ui.component.MissingPermissionBanner
 import de.mm20.launcher2.ui.launcher.search.SearchVM
 import de.mm20.launcher2.ui.launcher.search.common.list.SearchResultList
 
 @Composable
 fun ColumnScope.AppShortcutResults() {
     val viewModel: SearchVM = viewModel()
-    val apps by viewModel.appShortcutResults.observeAsState(emptyList())
+    val shortcuts by viewModel.appShortcutResults.observeAsState(emptyList())
+    val context = LocalContext.current
 
-    AnimatedVisibility(apps.isNotEmpty()) {
+    val isSearchEmpty by viewModel.isSearchEmpty.observeAsState(true)
+    val missingPermission by viewModel.missingAppShortcutPermission.collectAsState(false)
+
+    AnimatedVisibility(shortcuts.isNotEmpty() || (!isSearchEmpty && missingPermission)) {
         LauncherCard(
             modifier = Modifier.padding(bottom = 8.dp)
         ) {
+            Column {
+                AnimatedVisibility(!isSearchEmpty && missingPermission) {
+                    MissingPermissionBanner(
+                        text = stringResource(R.string.missing_permission_appshortcuts_search, stringResource(R.string.app_name)),
+                        onClick = { viewModel.requestAppShortcutPermission(context as AppCompatActivity) },
+                        modifier = Modifier.padding(16.dp),
+                        secondaryAction = {
+                            TextButton(onClick = {
+                                viewModel.disableAppShortcutSearch()
+                            }) {
+                                Text(
+                                    stringResource(R.string.turn_off),
+                                    style = MaterialTheme.typography.labelLarge
+                                )
+                            }
+                        }
+                    )
+                }
+            }
             SearchResultList(
-                items = apps,
+                items = shortcuts,
                 modifier = Modifier
                     .fillMaxWidth()
                     .padding(12.dp)