Implementing controlling of the sorting order

The dialog looks quite ugly right now, but at least everything works. I
can work on making it prettier after this.

assets/langs/en.yaml

@@ -1,4 +1,6 @@
 settings:
+  ok: Ok
+  cancel: Cancel
   title: Settings
   author:
     label: Full Name
@@ -71,11 +73,17 @@ settings:
     markdownEditor: Markdown Editor
     journalEditor: Journal Editor
     defaultFolder: Default Folder
-  sortingMode:
+  sortingField:
     modified: Last Modified
     created: Created
     filename: File Name
     title: Title
+  sortingOrder:
+    asc: Ascending
+    desc: Descending
+  sortingMode:
+    field: Field
+    order: Order
   remoteSync:
     auto: Automatic
     manual: Manual

lib/core/notes_folder_config.dart

@@ -70,7 +70,7 @@ class NotesFolderConfig extends Equatable {
     return NotesFolderConfig(
       defaultEditor: settings.defaultEditor.toEditorType(),
       defaultView: settings.defaultView.toFolderViewType(),
-      sortingMode: settings.sortingMode,
+      sortingMode: SortingMode(settings.sortingField, settings.sortingOrder),
       showNoteSummary: settings.showNoteSummary,
       viewHeader: viewHeader,
       fileNameFormat: settings.noteFileNameFormat,
@@ -82,7 +82,8 @@ class NotesFolderConfig extends Equatable {
   Future<void> saveToSettings() async {
     var settings = Settings.instance;
 
-    settings.sortingMode = sortingMode;
+    settings.sortingField = sortingMode.field;
+    settings.sortingOrder = sortingMode.order;
     settings.showNoteSummary = showNoteSummary;
     settings.defaultEditor = SettingsEditorType.fromEditorType(defaultEditor);
     settings.defaultView =
@@ -145,8 +146,12 @@ class NotesFolderConfig extends Equatable {
       Log.d('NotesFolderConfig::decode("$contents") -> ${err.toString()}');
     }
 
-    var sortingMode =
-        SortingMode.fromInternalString(map["sortingMode"]?.toString());
+    var sortingField =
+        SortingField.fromInternalString(map["sortingField"]?.toString());
+    var sortingOrder =
+        SortingOrder.fromInternalString(map["sortingOrder"]?.toString());
+    var sortingMode = SortingMode(sortingField, sortingOrder);
+
     var defaultEditor =
         SettingsEditorType.fromInternalString(map["defaultEditor"]?.toString());
     var defaultView = SettingsFolderViewType.fromInternalString(
@@ -198,7 +203,8 @@ class NotesFolderConfig extends Equatable {
     }
 
     var map = <String, dynamic>{
-      "sortingMode": sortingMode.toInternalString(),
+      "sortingField": sortingMode.field.toInternalString(),
+      "sortingOrder": sortingMode.order.toInternalString(),
       "defaultEditor":
           SettingsEditorType.fromEditorType(defaultEditor).toInternalString(),
       "defaultView": SettingsFolderViewType.fromFolderViewType(defaultView)

lib/core/sorted_notes_folder.dart

@@ -141,7 +141,8 @@ class SortedNotesFolder with NotesFolderNotifier implements NotesFolder {
   bool get isEmpty => folder.isEmpty;
 
   void changeSortingMode(SortingMode sm) {
-    Log.d("Setting sorting to me ${sm.toInternalString()}");
+    Log.d(
+        "Setting sorting to me ${sm.field.toInternalString()} ${sm.order.toInternalString()}");
     _sortingMode = sm;
     _sortFunc = _sortingMode.sortingFunction();
 

lib/core/sorting_mode.dart

@@ -4,28 +4,14 @@ import 'package:gitjournal/core/note.dart';
 
 typedef NoteSortingFunction = int Function(Note a, Note b);
 
-class SortingMode {
-  static const Modified = SortingMode(
-    "settings.sortingMode.modified",
-    "Modified",
-  );
-  static const Created = SortingMode(
-    "settings.sortingMode.created",
-    "Created",
-  );
-  static const FileName = SortingMode(
-    "settings.sortingMode.filename",
-    "FileName",
-  );
-  static const Title = SortingMode(
-    "settings.sortingMode.title",
-    "Title",
-  );
-  static const Default = Modified;
+class SortingOrder {
+  static const Ascending = SortingOrder("settings.sortingOrder.asc", "asc");
+  static const Descending = SortingOrder("settings.sortingOrder.desc", "desc");
+  static const Default = Descending;
 
   final String _str;
   final String _publicString;
-  const SortingMode(this._publicString, this._str);
+  const SortingOrder(this._publicString, this._str);
 
   String toInternalString() {
     return _str;
@@ -35,14 +21,12 @@ class SortingMode {
     return tr(_publicString);
   }
 
-  static const options = <SortingMode>[
-    Modified,
-    Created,
-    FileName,
-    Title,
+  static const options = <SortingOrder>[
+    Ascending,
+    Descending,
   ];
 
-  static SortingMode fromInternalString(String str) {
+  static SortingOrder fromInternalString(String str) {
     for (var opt in options) {
       if (opt.toInternalString() == str) {
         return opt;
@@ -51,7 +35,7 @@ class SortingMode {
     return Default;
   }
 
-  static SortingMode fromPublicString(String str) {
+  static SortingOrder fromPublicString(String str) {
     for (var opt in options) {
       if (opt.toPublicString() == str) {
         return opt;
@@ -62,67 +46,166 @@ class SortingMode {
 
   @override
   String toString() {
-    assert(false, "SortingMode toString should never be called");
+    assert(false, "SortingOrder toString should never be called");
     return "";
   }
+}
 
-  // vHanda FIXME: The modified and created should come from Git if not present in the document
-  NoteSortingFunction sortingFunction() {
-    switch (_str) {
-      case "Created":
-        return (Note a, Note b) {
-          var aDt = a.created;
-          var bDt = b.created;
-          if (aDt == null && bDt != null) {
-            return 1;
-          }
-          if (aDt != null && bDt == null) {
-            return -1;
-          }
-          if (bDt == null && aDt == null) {
-            return a.fileName.compareTo(b.fileName);
-          }
-          return bDt.compareTo(aDt);
-        };
+class SortingField {
+  static const Modified = SortingField(
+    "settings.sortingField.modified",
+    "Modified",
+  );
+  static const Created = SortingField(
+    "settings.sortingField.created",
+    "Created",
+  );
+  static const FileName = SortingField(
+    "settings.sortingField.filename",
+    "FileName",
+  );
+  static const Title = SortingField(
+    "settings.sortingField.title",
+    "Title",
+  );
 
-      case "Title":
-        return (Note a, Note b) {
-          var aTitleExists = a.title != null && a.title.isNotEmpty;
-          var bTitleExists = b.title != null && b.title.isNotEmpty;
+  static const Default = Modified;
 
-          if (!aTitleExists && bTitleExists) {
-            return 1;
-          }
-          if (aTitleExists && !bTitleExists) {
-            return -1;
-          }
-          if (!aTitleExists && !bTitleExists) {
-            return a.fileName.compareTo(b.fileName);
-          }
-          return a.title.compareTo(b.title);
-        };
+  final String _str;
+  final String _publicString;
+  const SortingField(this._publicString, this._str);
 
-      case "FileName":
-        return (Note a, Note b) {
-          return a.fileName.compareTo(b.fileName);
-        };
+  String toInternalString() {
+    return _str;
+  }
 
-      case "Modified":
-      default:
-        return (Note a, Note b) {
-          var aDt = a.modified;
-          var bDt = b.modified;
-          if (aDt == null && bDt != null) {
-            return 1;
-          }
-          if (aDt != null && bDt == null) {
-            return -1;
-          }
-          if (bDt == null && aDt == null) {
-            return a.fileName.compareTo(b.fileName);
-          }
-          return bDt.compareTo(aDt);
-        };
+  String toPublicString() {
+    return tr(_publicString);
+  }
+
+  static const options = <SortingField>[
+    Modified,
+    Created,
+    FileName,
+    Title,
+  ];
+
+  static SortingField fromInternalString(String str) {
+    for (var opt in options) {
+      if (opt.toInternalString() == str) {
+        return opt;
+      }
     }
+    return Default;
+  }
+
+  @override
+  String toString() {
+    assert(false, "SortingField toString should never be called");
+    return "";
   }
 }
+
+class SortingMode {
+  final SortingField field;
+  final SortingOrder order;
+
+  SortingMode(this.field, this.order);
+
+  NoteSortingFunction sortingFunction() {
+    switch (field) {
+      case SortingField.Created:
+        return order == SortingOrder.Descending
+            ? _sortCreatedDesc
+            : _reverse(_sortCreatedDesc);
+
+      case SortingField.Title:
+        return order == SortingOrder.Descending
+            ? _reverse(_sortTitleAsc)
+            : _sortTitleAsc;
+
+      case SortingField.FileName:
+        return order == SortingOrder.Descending
+            ? _reverse(_sortFileNameAsc)
+            : _sortFileNameAsc;
+
+      case SortingField.Modified:
+      default:
+        return order == SortingOrder.Descending
+            ? _sortModifiedDesc
+            : _reverse(_sortModifiedDesc);
+    }
+  }
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is SortingMode && other.field == field && other.order == order;
+
+  @override
+  int get hashCode => order.hashCode ^ field.hashCode;
+}
+
+int _sortCreatedDesc(Note a, Note b) {
+  var aDt = a.created;
+  var bDt = b.created;
+  if (aDt == null && bDt != null) {
+    return 1;
+  }
+  if (aDt != null && bDt == null) {
+    return -1;
+  }
+  if (bDt == null && aDt == null) {
+    return a.fileName.compareTo(b.fileName);
+  }
+  return bDt.compareTo(aDt);
+}
+
+int _sortModifiedDesc(Note a, Note b) {
+  var aDt = a.modified;
+  var bDt = b.modified;
+  if (aDt == null && bDt != null) {
+    return 1;
+  }
+  if (aDt != null && bDt == null) {
+    return -1;
+  }
+  if (bDt == null && aDt == null) {
+    return a.fileName.compareTo(b.fileName);
+  }
+  return bDt.compareTo(aDt);
+}
+
+int _sortTitleAsc(Note a, Note b) {
+  var aTitleExists = a.title != null && a.title.isNotEmpty;
+  var bTitleExists = b.title != null && b.title.isNotEmpty;
+
+  if (!aTitleExists && bTitleExists) {
+    return 1;
+  }
+  if (aTitleExists && !bTitleExists) {
+    return -1;
+  }
+  if (!aTitleExists && !bTitleExists) {
+    return a.fileName.compareTo(b.fileName);
+  }
+  return a.title.compareTo(b.title);
+}
+
+int _sortFileNameAsc(Note a, Note b) {
+  return a.fileName.compareTo(b.fileName);
+}
+
+NoteSortingFunction _reverse(NoteSortingFunction func) {
+  return (Note a, Note b) {
+    int r = func(a, b);
+    if (r == 0) {
+      return r;
+    }
+    if (r < 0) {
+      return 1;
+    } else {
+      return -1;
+    }
+  };
+}

lib/folder_views/journal_view.dart

@@ -39,8 +39,8 @@ class JournalView extends StatelessWidget {
     var textTheme = Theme.of(context).textTheme;
 
     DateTime date;
-    var sortingMode = folder.config.sortingMode;
-    if (sortingMode == SortingMode.Created) {
+    var sortingField = folder.config.sortingMode.field;
+    if (sortingField == SortingField.Created) {
       date = note.created;
     } else {
       date = note.modified;

lib/folder_views/standard_view.dart

@@ -79,10 +79,10 @@ class StandardView extends StatelessWidget {
     Widget trailing = Container();
 
     DateTime date;
-    var sortingMode = folder.config.sortingMode;
-    if (sortingMode == SortingMode.Modified) {
+    var sortingField = folder.config.sortingMode.field;
+    if (sortingField == SortingField.Modified) {
       date = note.modified;
-    } else if (sortingMode == SortingMode.Created) {
+    } else if (sortingField == SortingField.Created) {
       date = note.created;
     }
 

lib/screens/folder_view.dart

@@ -19,7 +19,7 @@ import 'package:gitjournal/widgets/app_bar_menu_button.dart';
 import 'package:gitjournal/widgets/app_drawer.dart';
 import 'package:gitjournal/widgets/new_note_nav_bar.dart';
 import 'package:gitjournal/widgets/note_search_delegate.dart';
-import 'package:gitjournal/widgets/sorting_order_selector.dart';
+import 'package:gitjournal/widgets/sorting_mode_selector.dart';
 import 'package:gitjournal/widgets/sync_button.dart';
 
 enum DropDownChoices {
@@ -190,7 +190,7 @@ class _FolderViewState extends State<FolderView> {
     var newSortingMode = await showDialog<SortingMode>(
       context: context,
       builder: (BuildContext context) =>
-          SortingOrderSelector(sortedNotesFolder.sortingMode),
+          SortingModeSelector(sortedNotesFolder.sortingMode),
     );
 
     if (newSortingMode != null) {

lib/settings.dart

@@ -32,7 +32,8 @@ class Settings extends ChangeNotifier {
   String journalEditordefaultNewNoteFolderSpec = "";
 
   RemoteSyncFrequency remoteSyncFrequency = RemoteSyncFrequency.Default;
-  SortingMode sortingMode = SortingMode.Default;
+  SortingField sortingField = SortingField.Default;
+  SortingOrder sortingOrder = SortingOrder.Default;
   SettingsEditorType defaultEditor = SettingsEditorType.Default;
   SettingsFolderViewType defaultView = SettingsFolderViewType.Default;
   bool showNoteSummary = true;
@@ -88,7 +89,10 @@ class Settings extends ChangeNotifier {
     remoteSyncFrequency = RemoteSyncFrequency.fromInternalString(
         pref.getString("remoteSyncFrequency"));
 
-    sortingMode = SortingMode.fromInternalString(pref.getString("sortingMode"));
+    sortingField =
+        SortingField.fromInternalString(pref.getString("sortingField"));
+    sortingOrder =
+        SortingOrder.fromInternalString(pref.getString("sortingOrder"));
     defaultEditor =
         SettingsEditorType.fromInternalString(pref.getString("defaultEditor"));
     defaultView = SettingsFolderViewType.fromInternalString(
@@ -169,8 +173,10 @@ class Settings extends ChangeNotifier {
         "remoteSyncFrequency",
         remoteSyncFrequency.toInternalString(),
         defaultSet.remoteSyncFrequency.toInternalString());
-    _setString(pref, "sortingMode", sortingMode.toInternalString(),
-        defaultSet.sortingMode.toInternalString());
+    _setString(pref, "sortingField", sortingField.toInternalString(),
+        defaultSet.sortingField.toInternalString());
+    _setString(pref, "sortingOrder", sortingOrder.toInternalString(),
+        defaultSet.sortingOrder.toInternalString());
     _setString(pref, "defaultEditor", defaultEditor.toInternalString(),
         defaultSet.defaultEditor.toInternalString());
     _setString(pref, "defaultView", defaultView.toInternalString(),
@@ -252,7 +258,8 @@ class Settings extends ChangeNotifier {
           journalEditordefaultNewNoteFolderSpec,
       "defaultEditor": defaultEditor.toInternalString(),
       "defaultView": defaultView.toInternalString(),
-      "sortingMode": sortingMode.toInternalString(),
+      "sortingField": sortingField.toInternalString(),
+      "sortingOrder": sortingOrder.toInternalString(),
       "remoteSyncFrequency": remoteSyncFrequency.toInternalString(),
       "showNoteSummary": showNoteSummary.toString(),
       "folderViewHeaderType": folderViewHeaderType,

lib/widgets/sorting_mode_selector.dart

@@ -0,0 +1,87 @@
+import 'package:flutter/material.dart';
+
+import 'package:easy_localization/easy_localization.dart';
+
+import 'package:gitjournal/core/sorting_mode.dart';
+import 'package:gitjournal/screens/settings_screen.dart';
+
+class SortingModeSelector extends StatefulWidget {
+  final SortingMode selectedMode;
+
+  SortingModeSelector(this.selectedMode);
+
+  @override
+  _SortingModeSelectorState createState() => _SortingModeSelectorState();
+}
+
+class _SortingModeSelectorState extends State<SortingModeSelector> {
+  SortingField field;
+  SortingOrder order;
+
+  @override
+  void initState() {
+    super.initState();
+    field = widget.selectedMode.field;
+    order = widget.selectedMode.order;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    var children = <Widget>[
+      SettingsHeader(tr('settings.sortingMode.field')),
+      for (var sf in SortingField.options) _buildSortingTile(sf),
+      SettingsHeader(tr('settings.sortingMode.order')),
+      for (var so in SortingOrder.options) _buildSortingOrderTile(so),
+    ];
+
+    return AlertDialog(
+      title: Text(tr("widgets.SortingOrderSelector.title")),
+      content: Column(
+        children: children,
+        mainAxisSize: MainAxisSize.min,
+        mainAxisAlignment: MainAxisAlignment.start,
+        crossAxisAlignment: CrossAxisAlignment.start,
+      ),
+      actions: [
+        OutlineButton(
+          child: Text(tr('settings.cancel')),
+          onPressed: () {
+            Navigator.of(context).pop();
+          },
+        ),
+        OutlineButton(
+          child: Text(tr('settings.ok')),
+          onPressed: () {
+            Navigator.of(context).pop(SortingMode(field, order));
+          },
+        ),
+      ],
+    );
+  }
+
+  RadioListTile<SortingField> _buildSortingTile(SortingField sf) {
+    return RadioListTile<SortingField>(
+      title: Text(sf.toPublicString()),
+      value: sf,
+      groupValue: field,
+      onChanged: (SortingField sf) {
+        setState(() {
+          field = sf;
+        });
+      },
+    );
+  }
+
+  RadioListTile<SortingOrder> _buildSortingOrderTile(SortingOrder so) {
+    return RadioListTile<SortingOrder>(
+      title: Text(so.toPublicString()),
+      value: so,
+      groupValue: order,
+      onChanged: (SortingOrder so) {
+        setState(() {
+          order = so;
+        });
+      },
+    );
+  }
+}

lib/widgets/sorting_order_selector.dart

@@ -1,41 +0,0 @@
-import 'package:flutter/material.dart';
-
-import 'package:easy_localization/easy_localization.dart';
-
-import 'package:gitjournal/core/sorting_mode.dart';
-
-class SortingOrderSelector extends StatelessWidget {
-  final SortingMode selectedMode;
-
-  SortingOrderSelector(this.selectedMode);
-
-  @override
-  Widget build(BuildContext context) {
-    var children = <Widget>[
-      _buildSortingTile(context, SortingMode.Modified),
-      _buildSortingTile(context, SortingMode.Created),
-      _buildSortingTile(context, SortingMode.Title),
-      _buildSortingTile(context, SortingMode.FileName),
-    ];
-
-    return AlertDialog(
-      title: Text(tr("widgets.SortingOrderSelector.title")),
-      content: Column(
-        children: children,
-        mainAxisSize: MainAxisSize.min,
-      ),
-    );
-  }
-
-  RadioListTile<SortingMode> _buildSortingTile(
-    BuildContext context,
-    SortingMode sm,
-  ) {
-    return RadioListTile<SortingMode>(
-      title: Text(sm.toPublicString()),
-      value: sm,
-      groupValue: selectedMode,
-      onChanged: (SortingMode sm) => Navigator.of(context).pop(sm),
-    );
-  }
-}

test/notes_folder_config_test.dart

@@ -29,7 +29,8 @@ void main() {
         defaultEditor: EditorType.Checklist,
         defaultView: FolderViewType.Standard,
         showNoteSummary: true,
-        sortingMode: SortingMode.Modified,
+        sortingMode:
+            SortingMode(SortingField.Modified, SortingOrder.Descending),
         viewHeader: StandardViewHeader.TitleOrFileName,
         fileNameFormat: NoteFileNameFormat.Default,
         folder: folder,

test/sorted_notes_folder_test.dart

@@ -39,7 +39,8 @@ void main() {
     test('Should load the notes sorted', () async {
       var sf = SortedNotesFolder(
         folder: folder,
-        sortingMode: SortingMode.Modified,
+        sortingMode:
+            SortingMode(SortingField.Modified, SortingOrder.Descending),
       );
       expect(sf.hasNotes, true);
       expect(sf.isEmpty, false);
@@ -57,7 +58,8 @@ void main() {
     test('Should on modification remains sorted', () async {
       var sf = SortedNotesFolder(
         folder: folder,
-        sortingMode: SortingMode.Modified,
+        sortingMode:
+            SortingMode(SortingField.Modified, SortingOrder.Descending),
       );
 
       var i = sf.notes.indexWhere((n) => n.body == "1");
@@ -73,7 +75,8 @@ void main() {
     test('Should add new note correctly', () async {
       var sf = SortedNotesFolder(
         folder: folder,
-        sortingMode: SortingMode.Modified,
+        sortingMode:
+            SortingMode(SortingField.Modified, SortingOrder.Descending),
       );
 
       var note = Note(folder, p.join(folder.folderPath, "new.md"));
@@ -96,7 +99,8 @@ void main() {
     test('Should add new note to end works correctly', () async {
       var sf = SortedNotesFolder(
         folder: folder,
-        sortingMode: SortingMode.Modified,
+        sortingMode:
+            SortingMode(SortingField.Modified, SortingOrder.Descending),
       );
 
       var note = Note(folder, p.join(folder.folderPath, "new.md"));
@@ -120,7 +124,8 @@ void main() {
       var folder = NotesFolderFS(null, tempDir.path);
       var sf = SortedNotesFolder(
         folder: folder,
-        sortingMode: SortingMode.Modified,
+        sortingMode:
+            SortingMode(SortingField.Modified, SortingOrder.Descending),
       );
 
       await folder.loadRecursively();

test/sorting_mode_test.dart

@@ -21,7 +21,8 @@ void main() {
       n4.created = null;
 
       var notes = [n1, n2, n3, n4];
-      var sortFn = SortingMode.Created.sortingFunction();
+      var sortFn = SortingMode(SortingField.Created, SortingOrder.Descending)
+          .sortingFunction();
 
       notes.sort(sortFn);
       expect(notes[0], n2);
@@ -45,7 +46,8 @@ void main() {
       n4.modified = null;
 
       var notes = [n1, n2, n3, n4];
-      var sortFn = SortingMode.Modified.sortingFunction();
+      var sortFn = SortingMode(SortingField.Modified, SortingOrder.Descending)
+          .sortingFunction();
 
       notes.sort(sortFn);
       expect(notes[0], n2);