Implement basic inline tags

Fixes #44

assets/langs/en.yaml

@@ -244,6 +244,7 @@ feature:
   localization:
     title: Localization
     subtitle: Allow GitJournal to be translated
+  inlineTags: Inline Tags
 
 feature_timeline:
   title: Feature Timeline

lib/core/note.dart

@@ -7,6 +7,7 @@ import 'package:gitjournal/core/links_loader.dart';
 import 'package:gitjournal/core/md_yaml_doc_loader.dart';
 import 'package:gitjournal/core/note_notifier.dart';
 import 'package:gitjournal/core/notes_folder_fs.dart';
+import 'package:gitjournal/core/processors/inline_tags.dart';
 import 'package:gitjournal/error_reporting.dart';
 import 'package:gitjournal/settings.dart';
 import 'package:gitjournal/utils/datetime.dart';
@@ -62,6 +63,7 @@ class Note with NotesNotifier {
   // Computed from body
   String _summary;
   List<Link> _links;
+  Set<String> _inlineTags;
 
   static final _mdYamlDocLoader = MdYamlDocLoader();
   static final _linksLoader = LinksLoader();
@@ -150,6 +152,8 @@ class Note with NotesNotifier {
     _body = newBody;
     _summary = null;
     _links = null;
+    _inlineTags = null;
+
     _notifyModified();
   }
 
@@ -185,6 +189,17 @@ class Note with NotesNotifier {
     _notifyModified();
   }
 
+  Set<String> get inlineTags {
+    if (_loadState != NoteLoadState.Loaded) return {};
+
+    if (_inlineTags == null) {
+      var tagPrefixes = Settings.instance.inlineTagPrefixes;
+      var p = InlineTagsProcessor(tagPrefixes: tagPrefixes);
+      _inlineTags = p.extractTags(body);
+    }
+    return _inlineTags;
+  }
+
   Map<String, dynamic> get extraProps {
     return _extraProps;
   }

lib/core/notes_folder_fs.dart

@@ -525,6 +525,7 @@ typedef NoteMatcherAsync = Future<bool> Function(Note n);
 Set<String> _fetchTags(NotesFolder folder, Set<String> tags) {
   for (var note in folder.notes) {
     tags.addAll(note.tags);
+    tags.addAll(note.inlineTags);
   }
 
   for (var folder in folder.subFolders) {

lib/features.dart

@@ -2,7 +2,6 @@ import 'package:easy_localization/easy_localization.dart';
 
 class Features {
   static bool perFolderConfig = false;
-  static bool inlineTags = false;
 
   static final all = <Feature>[
     Feature.basicSearch,
@@ -37,6 +36,7 @@ class Features {
     Feature.yamlTagsKey,
     Feature.customMetaData,
     Feature.localization,
+    Feature.inlineTags,
   ];
 
   static final inProgress = <String>[
@@ -319,6 +319,14 @@ class Feature {
     tr("feature.localization.subtitle"),
     false,
   );
+
+  static final inlineTags = Feature(
+    "inlineTags",
+    DateTime(2020, 09, 02),
+    tr("feature.inlineTags"),
+    "",
+    true,
+  );
 }
 
 // Feature Adding checklist

lib/screens/settings_screen.dart

@@ -243,8 +243,9 @@ class SettingsListState extends State<SettingsList> {
           Navigator.of(context).push(route);
         },
       ),
-      if (Features.inlineTags)
+      ProOverlay(
-        ListTile(
+        feature: Feature.inlineTags,
+        child: ListTile(
           title: Text(tr("settings.tags.title")),
           subtitle: Text(tr("settings.tags.subtitle")),
           onTap: () {
@@ -255,6 +256,7 @@ class SettingsListState extends State<SettingsList> {
             Navigator.of(context).push(route);
           },
         ),
+      ),
       ListTile(
         title: Text(tr('settings.images.title')),
         subtitle: Text(tr('settings.images.subtitle')),

lib/screens/tag_listing.dart

@@ -57,7 +57,8 @@ class TagListingScreen extends StatelessWidget {
             var rootFolder = Provider.of<NotesFolderFS>(context);
             var folder = FlattenedNotesFolder(
               rootFolder,
-              filter: (Note n) => n.tags.contains(tag),
+              filter: (Note n) =>
+                  n.tags.contains(tag) || n.inlineTags.contains(tag),
               title: tag,
             );