enh : Exclude apps already in other folders from container list

lawnchair/src/app/lawnchair/data/folder/model/FolderViewModel.kt

@@ -31,6 +31,9 @@ class FolderViewModel(context: Context) : ViewModel() {
     private val _foldersMutable = MutableLiveData<List<FolderInfo>>()
     val foldersMutable: LiveData<List<FolderInfo>> = _foldersMutable
 
+    private val _items = MutableStateFlow<Set<String>>(setOf())
+    val items: StateFlow<Set<String>> = _items.asStateFlow()
+
     private val _folderInfo = MutableStateFlow<FolderInfo?>(null)
     val folderInfo = _folderInfo.asStateFlow()
     private var tempTitle: String = ""
@@ -54,6 +57,13 @@ class FolderViewModel(context: Context) : ViewModel() {
         }
     }
 
+    fun setItems(id: Int) {
+        viewModelScope.launch {
+            val items = repository.getItems(id)
+            _items.value = items
+        }
+    }
+
     fun updateCurrentTitle(title: String) {
         if (action.value == Action.EDIT) {
             tempTitle = title

lawnchair/src/app/lawnchair/data/folder/service/FolderDao.kt

@@ -25,6 +25,10 @@ interface FolderDao {
     @Transaction
     suspend fun getFolderWithItems(folderId: Int): FolderWithItems?
 
+    @Query("SELECT * FROM FolderItems WHERE folderId IS NOT :folderId")
+    @Transaction
+    suspend fun getItems(folderId: Int): List<FolderItemEntity>
+
     @Query("SELECT * FROM Folders")
     fun getAllFolders(): Flow<List<FolderInfoEntity>>
 

lawnchair/src/app/lawnchair/data/folder/service/FolderService.kt

@@ -76,6 +76,15 @@ class FolderService(val context: Context) : SafeCloseable {
         return null
     }
 
+    suspend fun getItems(id: Int): Set<String> = withContext(Dispatchers.IO) {
+        return@withContext try {
+            folderDao.getItems(id).mapNotNull { it.componentKey }.toSet()
+        } catch (e: Exception) {
+            Log.e("FolderService", "Failed to get all items", e)
+            setOf()
+        }
+    }
+
     suspend fun getAllFolders(): List<FolderInfo> = withContext(Dispatchers.IO) {
         try {
             val folderEntities = folderDao.getAllFolders().firstOrNull() ?: emptyList()

lawnchair/src/app/lawnchair/ui/preferences/components/folder/AppListToFolderPreferences.kt

@@ -21,6 +21,7 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import app.lawnchair.LawnchairLauncher
+import app.lawnchair.data.Converters
 import app.lawnchair.data.factory.ViewModelFactory
 import app.lawnchair.data.folder.model.FolderViewModel
 import app.lawnchair.launcher
@@ -62,6 +63,7 @@ fun AppListToFolderPreferences(
     val loading = folderInfo == null
 
     val selectedAppsState = remember { mutableStateOf(setOf<ItemInfo>()) }
+    val dbItems = viewModel.items.collectAsState()
 
     LaunchedEffect(folderInfoId) {
         viewModel.setFolderInfo(folderInfoId, false)
@@ -70,9 +72,12 @@ fun AppListToFolderPreferences(
     LaunchedEffect(folderInfo) {
         val folderContents = folderInfo?.contents?.toMutableSet() ?: mutableSetOf()
         selectedAppsState.value = folderContents
+        viewModel.setItems(folderInfoId)
     }
 
-    val apps = launcher.mAppsView.appsStore.apps.toList()
+    val apps = launcher.mAppsView.appsStore.apps
+        .toList()
+        .filterNot { app -> dbItems.value.contains(Converters().fromComponentKey(app.componentKey)) }
         .sortedBySelection(selectedAppsState.value)
 
     val state = rememberLazyListState()