Add toggle to disable completion date sorting

app/src/main/java/org/tasks/data/TaskListQueryNonRecursive.kt

@@ -20,7 +20,6 @@ internal object TaskListQueryNonRecursive {
     private val TAGS =
             field("group_concat(distinct(${TaskListFragment.TAGS_METADATA_JOIN}.tag_uid))")
                     .`as`("tags")
-    private const val COMPLETION_SORT = "parentComplete ASC, tasks.completed DESC, "
     private val FIELDS =
         TaskListQuery.FIELDS.plus(listOf(
             TAGS,
@@ -32,18 +31,21 @@ internal object TaskListQueryNonRecursive {
         val sortMode = preferences.sortMode
         val sortGroup = field(SortHelper.getSortGroup(sortMode) ?: "NULL").`as`("sortGroup")
         val query = SortHelper.adjustQueryForFlagsAndSort(preferences, joinedQuery, sortMode)
-        val completionSort = if (preferences.completedTasksAtBottom) {
+        val completeAtBottom = if (preferences.completedTasksAtBottom) "parentComplete ASC," else ""
-            COMPLETION_SORT
+        val completionSort =
-        } else {
+            if (preferences.completedTasksAtBottom && preferences.sortCompletedByCompletionDate) {
-            ""
+                "tasks.completed DESC,"
-        }
+            } else {
+                ""
+            }
+        val orderBy = "$completeAtBottom $completionSort"
         val groupedQuery = when {
             filter is RecentlyModifiedFilter ->
                 query.replace("ORDER BY", "GROUP BY ${Task.ID} ORDER BY")
             query.contains("ORDER BY") ->
-                query.replace("ORDER BY", "GROUP BY ${Task.ID} ORDER BY $completionSort")
+                query.replace("ORDER BY", "GROUP BY ${Task.ID} ORDER BY $orderBy")
             preferences.completedTasksAtBottom ->
-                "$query GROUP BY ${Task.ID} ORDER BY $completionSort"
+                "$query GROUP BY ${Task.ID} ORDER BY $orderBy"
             else ->
                 "$query GROUP BY ${Task.ID}"
         }

app/src/main/java/org/tasks/data/TaskListQueryRecursive.kt

@@ -98,16 +98,13 @@ internal object TaskListQueryRecursive {
         }
         val reverseSort = preferences.isReverseSort && sortMode != SortHelper.SORT_GTASKS && sortMode != SortHelper.SORT_CALDAV
         val sortSelect = SortHelper.orderSelectForSortTypeRecursive(sortMode)
-        val parentCompleted = if (preferences.completedTasksAtBottom) {
+        val parentCompleted = if (preferences.completedTasksAtBottom) "tasks.completed > 0" else "0"
-            "tasks.completed > 0"
+        val completionSort =
-        } else {
+            if (preferences.completedTasksAtBottom && preferences.sortCompletedByCompletionDate) {
-            "0"
+                "tasks.completed"
-        }
+            } else {
-        val completionSort = if (preferences.completedTasksAtBottom) {
+                "0"
-            "tasks.completed"
+            }
-        } else {
-            "0"
-        }
         val withClause ="""
             CREATE TEMPORARY TABLE `recursive_tasks` AS
             WITH RECURSIVE recursive_tasks (task, parent_complete, subtask_complete, completion_sort, parent, collapsed, hidden, indent, title, sortField, primary_sort, secondary_sort, sort_group) AS (

app/src/main/java/org/tasks/preferences/Preferences.kt

@@ -361,6 +361,9 @@ class Preferences @JvmOverloads constructor(
     override val completedTasksAtBottom: Boolean
         get() = getBoolean(R.string.p_completed_tasks_at_bottom, true)
 
+    override val sortCompletedByCompletionDate: Boolean
+        get() = getBoolean(R.string.p_completed_tasks_sort, true)
+
     private fun setPublicPref(key: String, value: Int) {
         val edit = publicPrefs.edit()
         edit?.putInt(key, value)?.apply()

app/src/main/java/org/tasks/preferences/QueryPreferences.kt

@@ -17,5 +17,7 @@ interface QueryPreferences {
 
     val completedTasksAtBottom: Boolean
 
+    val sortCompletedByCompletionDate: Boolean
+
     fun usePagedQueries(): Boolean
 }

app/src/main/java/org/tasks/widget/WidgetPreferences.java

@@ -289,6 +289,11 @@ public class WidgetPreferences implements QueryPreferences {
     return preferences.getCompletedTasksAtBottom();
   }
 
+  @Override
+  public boolean getSortCompletedByCompletionDate() {
+    return preferences.getSortCompletedByCompletionDate();
+  }
+
   @Override
   public boolean usePagedQueries() {
     return preferences.usePagedQueries();

app/src/main/res/values/keys.xml

@@ -448,4 +448,5 @@
   <string name="p_app_bar_position">app_bar_position</string>
   <string name="p_app_bar_collapse">app_bar_collapse</string>
   <string name="p_completed_tasks_at_bottom">completed_tasks_at_bottom</string>
+  <string name="p_completed_tasks_sort">completed_tasks_sort</string>
 </resources>

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

@@ -714,5 +714,6 @@ File %1$s contained %2$s.\n\n
   <string name="completed">Completed</string>
   <string name="snackbar_task_completed">Task completed</string>
   <string name="completed_tasks_at_bottom">Move completed tasks to bottom</string>
+  <string name="completed_tasks_sort">Sort by completion date</string>
   <string name="snackbar_tasks_completed">%d tasks completed</string>
 </resources>

app/src/main/res/xml/preferences_look_and_feel.xml

@@ -108,9 +108,16 @@
 
     <SwitchPreferenceCompat
       android:defaultValue="true"
+      app:allowDividerAbove="true"
       android:key="@string/p_completed_tasks_at_bottom"
       android:title="@string/completed_tasks_at_bottom" />
 
+    <SwitchPreferenceCompat
+      android:defaultValue="true"
+      android:key="@string/p_completed_tasks_sort"
+      android:dependency="@string/p_completed_tasks_at_bottom"
+      android:title="@string/completed_tasks_sort" />
+
     <SwitchPreferenceCompat
       android:defaultValue="false"
       app:allowDividerAbove="true"