Scope task list view model to task list fragment

app/src/main/java/com/todoroo/astrid/activity/TaskListFragment.kt

@@ -21,6 +21,7 @@ import androidx.appcompat.widget.Toolbar
 import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
+import androidx.fragment.app.viewModels
 import androidx.lifecycle.Observer
 import androidx.lifecycle.lifecycleScope
 import androidx.paging.PagedList
@@ -126,7 +127,7 @@ class TaskListFragment : Fragment(), OnRefreshListener, Toolbar.OnMenuItemClickL
     @BindView(R.id.recycler_view)
     lateinit var recyclerView: RecyclerView
     
-    private val listViewModel: TaskListViewModel by activityViewModels()
+    private val listViewModel: TaskListViewModel by viewModels()
     private lateinit var taskAdapter: TaskAdapter
     private var recyclerAdapter: TaskListRecyclerAdapter? = null
     private lateinit var filter: Filter

app/src/main/java/com/todoroo/astrid/dao/TaskDao.kt

@@ -120,8 +120,6 @@ abstract class TaskDao(private val database: Database) {
 
     @Transaction
     open suspend fun fetchTasks(callback: (SubtaskInfo) -> List<String>, subtasks: SubtaskInfo): List<TaskContainer> {
-        assertNotMainThread()
-
         val start = if (BuildConfig.DEBUG) DateUtilities.now() else 0
         val queries = callback.invoke(subtasks)
         val db = database.openHelper.writableDatabase

app/src/main/java/org/tasks/ui/NavigationDrawerFragment.kt

@@ -90,9 +90,6 @@ class NavigationDrawerFragment : Fragment() {
                         }
                     }
                 })
-        if (item is Filter) {
-            ViewModelProvider(requireActivity()).get(TaskListViewModel::class.java).setFilter((item as Filter?)!!)
-        }
         close()
     }
 

app/src/main/java/org/tasks/ui/SubtaskControlSet.kt

@@ -15,8 +15,8 @@ import android.view.inputmethod.InputMethodManager
 import android.widget.EditText
 import android.widget.LinearLayout
 import androidx.core.widget.addTextChangedListener
+import androidx.fragment.app.viewModels
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.DefaultItemAnimator
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -69,14 +69,13 @@ class SubtaskControlSet : TaskEditControlFragment(), SubtaskViewHolder.Callbacks
     @Inject lateinit var checkBoxProvider: CheckBoxProvider
     @Inject lateinit var chipProvider: ChipProvider
     
-    private lateinit var listViewModel: TaskListViewModel
+    private val listViewModel: TaskListViewModel by viewModels()
     private val refreshReceiver = RefreshReceiver()
     private var remoteList: Filter? = null
     private var googleTask: GoogleTask? = null
     private lateinit var recyclerAdapter: SubtasksRecyclerAdapter
     
     override fun createView(savedInstanceState: Bundle?) {
-        listViewModel = ViewModelProvider(this).get(TaskListViewModel::class.java)
         viewModel.newSubtasks.forEach { addSubtask(it) }
         recyclerAdapter = SubtasksRecyclerAdapter(activity, chipProvider, checkBoxProvider, this)
         viewModel.task?.let {

app/src/main/java/org/tasks/ui/TaskListViewModel.kt

@@ -8,10 +8,9 @@ import androidx.sqlite.db.SimpleSQLiteQuery
 import com.todoroo.andlib.utility.AndroidUtilities
 import com.todoroo.andlib.utility.DateUtilities
 import com.todoroo.astrid.api.Filter
-import com.todoroo.astrid.dao.TaskDaoBlocking
+import com.todoroo.astrid.dao.TaskDao
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
 import org.tasks.BuildConfig
 import org.tasks.data.SubtaskInfo
 import org.tasks.data.TaskContainer
@@ -21,7 +20,7 @@ import timber.log.Timber
 
 class TaskListViewModel @ViewModelInject constructor(
         private val preferences: Preferences,
-        private val taskDao: TaskDaoBlocking) : ViewModel(), Observer<PagedList<TaskContainer>> {
+        private val taskDao: TaskDao) : ViewModel(), Observer<PagedList<TaskContainer>> {
 
     private var tasks = MutableLiveData<List<TaskContainer>>()
     private var filter: Filter? = null
@@ -70,11 +69,9 @@ class TaskListViewModel @ViewModelInject constructor(
     }
 
     private suspend fun performNonPagedQuery(subtasks: SubtaskInfo) {
-        tasks.value = withContext(Dispatchers.IO) {
-            taskDao.fetchTasks(
-                    { s: SubtaskInfo? -> getQuery(preferences, filter!!, s!!) },
-                    subtasks)
-        }
+        tasks.value = taskDao.fetchTasks(
+                { s: SubtaskInfo? -> getQuery(preferences, filter!!, s!!) },
+                subtasks)
     }
 
     private fun performPagedListQuery() {