NoteEditor: Pass it the parentFolder

A note has a parent which is the physical folder it is inside, and a
parent folder which it is being displayed inside. It's useful to have
the latter as that can be used to display the next note - in the case of
the Journal Editor, and open the graph view as well.

lib/app.dart

@@ -390,8 +390,10 @@ class _JournalAppState extends State<JournalApp> {
         });
       }
 
+      var folder = getFolderForEditor(settings, rootFolder, et);
       return NoteEditor.newNote(
-        getFolderForEditor(settings, rootFolder, et),
+        folder,
+        folder,
         et,
         existingText: sharedText,
         existingImages: sharedImages,

lib/editors/markdown_editor.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 import 'package:gitjournal/core/note.dart';
+import 'package:gitjournal/core/notes_folder.dart';
 import 'package:gitjournal/editors/common.dart';
 import 'package:gitjournal/editors/disposable_change_notifier.dart';
 import 'package:gitjournal/editors/heuristics.dart';
@@ -19,6 +20,7 @@ import 'package:gitjournal/widgets/note_viewer.dart';
 
 class MarkdownEditor extends StatefulWidget implements Editor {
   final Note note;
+  final NotesFolder parentFolder;
   final bool noteModified;
 
   @override
@@ -41,6 +43,7 @@ class MarkdownEditor extends StatefulWidget implements Editor {
   MarkdownEditor({
     Key key,
     @required this.note,
+    @required this.parentFolder,
     @required this.noteModified,
     @required this.noteDeletionSelected,
     @required this.noteEditorChooserSelected,
@@ -130,7 +133,12 @@ class MarkdownEditorState extends State<MarkdownEditor>
       ),
     );
 
-    Widget body = editingMode ? editor : NoteViewer(note: note);
+    Widget body = editingMode
+        ? editor
+        : NoteViewer(
+            note: note,
+            parentFolder: widget.parentFolder,
+          );
 
     var settings = Provider.of<Settings>(context);
     if (settings.experimentalMarkdownToolbar && editingMode) {

lib/folder_views/common.dart

@@ -68,9 +68,13 @@ Widget buildFolderView({
   return Container();
 }
 
-void openNoteEditor(BuildContext context, Note note) async {
+void openNoteEditor(
+  BuildContext context,
+  Note note,
+  NotesFolder parentFolder,
+) async {
   var route = MaterialPageRoute(
-    builder: (context) => NoteEditor.fromNote(note),
+    builder: (context) => NoteEditor.fromNote(note, parentFolder),
     settings: const RouteSettings(name: '/note/'),
   );
   var showUndoSnackBar = await Navigator.of(context).push(route);

lib/screens/folder_view.dart

@@ -90,7 +90,7 @@ class _FolderViewState extends State<FolderView> {
           showSummary: _showSummary,
           noteTapped: (Note note) {
             if (!inSelectionMode) {
-              openNoteEditor(context, note);
+              openNoteEditor(context, note, widget.notesFolder);
             } else {
               setState(() {
                 inSelectionMode = false;
@@ -189,6 +189,7 @@ class _FolderViewState extends State<FolderView> {
     var route = MaterialPageRoute(
       builder: (context) => NoteEditor.newNote(
         fsFolder,
+        widget.notesFolder,
         editorType,
         newNoteExtraProps: extraProps,
       ),

lib/screens/note_editor.dart

@@ -9,6 +9,7 @@ import 'package:provider/provider.dart';
 
 import 'package:gitjournal/core/md_yaml_doc.dart';
 import 'package:gitjournal/core/note.dart';
+import 'package:gitjournal/core/notes_folder.dart';
 import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/editors/checklist_editor.dart';
 import 'package:gitjournal/editors/journal_editor.dart';
@@ -28,6 +29,7 @@ class ShowUndoSnackbar {}
 class NoteEditor extends StatefulWidget {
   final Note note;
   final NotesFolderFS notesFolder;
+  final NotesFolder parentFolderView;
   final EditorType defaultEditorType;
 
   final String existingText;
@@ -35,7 +37,7 @@ class NoteEditor extends StatefulWidget {
 
   final Map<String, dynamic> newNoteExtraProps;
 
-  NoteEditor.fromNote(this.note)
+  NoteEditor.fromNote(this.note, this.parentFolderView)
       : notesFolder = note.parent,
         defaultEditorType = null,
         existingText = null,
@@ -44,6 +46,7 @@ class NoteEditor extends StatefulWidget {
 
   NoteEditor.newNote(
     this.notesFolder,
+    this.parentFolderView,
     this.defaultEditorType, {
     this.existingText,
     this.existingImages,
@@ -151,6 +154,7 @@ class NoteEditorState extends State<NoteEditor> {
         return MarkdownEditor(
           key: _markdownEditorKey,
           note: note,
+          parentFolder: widget.parentFolderView,
           noteModified: _noteModified(note),
           noteDeletionSelected: _noteDeletionSelected,
           noteEditorChooserSelected: _noteEditorChooserSelected,

lib/widgets/note_search_delegate.dart

@@ -83,7 +83,7 @@ class NoteSearchDelegate extends SearchDelegate<Note> {
       emptyText: emptyText,
       header: StandardViewHeader.TitleOrFileName,
       showSummary: true,
-      noteTapped: (Note note) => openNoteEditor(context, note),
+      noteTapped: (Note note) => openNoteEditor(context, note, folder),
       noteLongPressed: (Note note) {},
     );
   }

lib/widgets/note_viewer.dart

@@ -12,6 +12,7 @@ import 'package:url_launcher/url_launcher.dart';
 
 import 'package:gitjournal/core/link.dart';
 import 'package:gitjournal/core/note.dart';
+import 'package:gitjournal/core/notes_folder.dart';
 import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/folder_views/common.dart';
 import 'package:gitjournal/settings.dart';
@@ -23,7 +24,12 @@ import 'package:gitjournal/widgets/notes_backlinks.dart';
 
 class NoteViewer extends StatelessWidget {
   final Note note;
-  const NoteViewer({Key key, @required this.note}) : super(key: key);
+  final NotesFolder parentFolder;
+  const NoteViewer({
+    Key key,
+    @required this.note,
+    @required this.parentFolder,
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -72,7 +78,7 @@ class NoteViewer extends StatelessWidget {
 
                 var linkedNote = linkResolver.resolve(link);
                 if (linkedNote != null) {
-                  openNoteEditor(context, linkedNote);
+                  openNoteEditor(context, linkedNote, parentFolder);
                   return;
                 }
 
@@ -91,7 +97,11 @@ class NoteViewer extends StatelessWidget {
           ),
           const SizedBox(height: 16.0),
           if (settings.experimentalBacklinks)
-            NoteBacklinkRenderer(note: note, rootFolder: rootFolder),
+            NoteBacklinkRenderer(
+              note: note,
+              rootFolder: rootFolder,
+              parentFolder: parentFolder,
+            ),
           // _buildFooter(context),
         ],
         crossAxisAlignment: CrossAxisAlignment.start,

lib/widgets/notes_backlinks.dart

@@ -5,6 +5,7 @@ import 'package:easy_localization/easy_localization.dart';
 
 import 'package:gitjournal/core/link.dart';
 import 'package:gitjournal/core/note.dart';
+import 'package:gitjournal/core/notes_folder.dart';
 import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/features.dart';
 import 'package:gitjournal/folder_views/common.dart';
@@ -14,10 +15,12 @@ import 'package:gitjournal/widgets/pro_overlay.dart';
 class NoteBacklinkRenderer extends StatefulWidget {
   final Note note;
   final NotesFolderFS rootFolder;
+  final NotesFolder parentFolder;
 
   NoteBacklinkRenderer({
     @required this.note,
     @required this.rootFolder,
+    @required this.parentFolder,
   });
 
   @override
@@ -88,7 +91,7 @@ class _NoteBacklinkRendererState extends State<NoteBacklinkRenderer> {
             note: note,
             parentNote: widget.note,
             onTap: () {
-              openNoteEditor(context, note);
+              openNoteEditor(context, note, widget.parentFolder);
             },
           ),
       ],
@@ -137,9 +140,7 @@ class NoteSnippet extends StatelessWidget {
     return Padding(
       padding: const EdgeInsets.fromLTRB(0.0, 8.0, 0.0, 8.0),
       child: GestureDetector(
-        onTap: () {
-          openNoteEditor(context, note);
-        },
+        onTap: onTap,
         child: Container(
           color: theme.scaffoldBackgroundColor,
           width: MediaQuery.of(context).size.width,