fix(dictionary): its sources in a short line, the full credits a tap away

The foot of the dictionary named each source with its makers and
licence, three lines of small print. It now names the sources alone in
a line ("Words from JMdict, JLPT vocabulary lists, Tatoeba"); tapping
it or its ⓘ shows who made each, under which licence, with its link,
which is still where the entries show, as the licences ask.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MMm7usAo6q9ZZRoPkWjoxi
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

halkyon_learn_flutter/lib/l10n/app_de.arb

@@ -640,6 +640,7 @@
   "dictionaryConfirmMessage": "Jedes wird eine Karteikarte in diesem Lernset.",
   "dictionaryConfirmAdd": "Hinzufügen",
   "dictionaryCredits": "Wörter aus {sources}.",
+  "dictionarySourcesTitle": "Quellen",
   "dictionaryLookUp": "Im Wörterbuch nachschlagen",
   "dictionaryCharacterSearchHint": "Ein Kanji oder Kana, eine Lesung in Kana oder Romaji, oder eine Bedeutung",
   "dictionaryTabWords": "Wörter",

halkyon_learn_flutter/lib/l10n/app_en.arb

@@ -731,6 +731,7 @@
   "dictionaryConfirmMessage": "Each becomes a flashcard in this studyset.",
   "dictionaryConfirmAdd": "Add",
   "dictionaryCredits": "Words from {sources}.",
+  "dictionarySourcesTitle": "Sources",
   "@dictionaryCredits": {"placeholders": {"sources": {"type": "String"}}},
   "dictionaryLookUp": "Look up in the dictionary",
   "dictionaryCharacterSearchHint": "A kanji or kana, a reading in kana or romaji, or a meaning",

halkyon_learn_flutter/lib/l10n/app_localizations.dart

@@ -3826,6 +3826,12 @@ abstract class AppLocalizations {
   /// **'Words from {sources}.'**
   String dictionaryCredits(String sources);
 
+  /// No description provided for @dictionarySourcesTitle.
+  ///
+  /// In en, this message translates to:
+  /// **'Sources'**
+  String get dictionarySourcesTitle;
+
   /// No description provided for @dictionaryLookUp.
   ///
   /// In en, this message translates to:

halkyon_learn_flutter/lib/l10n/app_localizations_de.dart

@@ -2364,6 +2364,9 @@ class AppLocalizationsDe extends AppLocalizations {
     return 'Wörter aus $sources.';
   }
 
+  @override
+  String get dictionarySourcesTitle => 'Quellen';
+
   @override
   String get dictionaryLookUp => 'Im Wörterbuch nachschlagen';
 

halkyon_learn_flutter/lib/l10n/app_localizations_en.dart

@@ -2346,6 +2346,9 @@ class AppLocalizationsEn extends AppLocalizations {
     return 'Words from $sources.';
   }
 
+  @override
+  String get dictionarySourcesTitle => 'Sources';
+
   @override
   String get dictionaryLookUp => 'Look up in the dictionary';
 

halkyon_learn_flutter/lib/src/feature/dictionary/widget/dictionary_lookup_sheet.dart

@@ -160,13 +160,11 @@ class _LookUpState() extends State<_LookUp> {
               ),
             ],
           const SizedBox(height: 8),
-          Text(
-            dictionaryCreditLine(l10n, widget.dictionary),
-            style: theme.textTheme.bodySmall?.copyWith(
-              color: theme.colorScheme.onSurfaceVariant,
+          DictionarySources(
+            dictionary: widget.dictionary,
+            padding: EdgeInsets.zero,
           ),
-          ),
-          const SizedBox(height: 16),
+          const SizedBox(height: 8),
         ],
       ),
     );

halkyon_learn_flutter/lib/src/feature/dictionary/widget/dictionary_screen.dart

@@ -262,7 +262,6 @@ class const _Page({
 }) extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    final theme = Theme.of(context);
     return Center(
       child: ConstrainedBox(
         constraints: const BoxConstraints(maxWidth: readableContentMaxWidth),
@@ -271,15 +270,7 @@ class const _Page({
           children: [
             ...children,
             const Divider(height: 1),
-            Padding(
-              padding: const EdgeInsets.fromLTRB(16, 8, 16, 12),
-              child: Text(
-                dictionaryCreditLine(AppLocalizations.of(context), dictionary),
-                style: theme.textTheme.bodySmall?.copyWith(
-                  color: theme.colorScheme.onSurfaceVariant,
-                ),
-              ),
-            ),
+            DictionarySources(dictionary: dictionary),
           ],
         ),
       ),

halkyon_learn_flutter/lib/src/feature/dictionary/widget/dictionary_word_tile.dart

@@ -1,7 +1,12 @@
+import 'dart:async';
+
 import 'package:halkyon_learn_flutter/l10n/app_localizations.dart';
+import 'package:halkyon_learn_flutter/src/core/widget/adaptive_sheet.dart';
 import 'package:halkyon_learn_flutter/src/feature/card/widget/vocabulary_senses.dart';
 import 'package:halkyon_learn_flutter/src/feature/dictionary/model/dictionary.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart';
 import 'package:material_ui/material_ui.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 /// A word as a dictionary lists it: its headword and reading, its senses
 /// with their grammar notes small, grey and slanted, cut short at two
@@ -176,14 +181,104 @@ Widget dictionaryItemTile(
   ),
 };
 
-/// The credits of [dictionary] in a line, as its licence asks to name them.
+/// The sources of [dictionary] in a line, by their names alone.
 String dictionaryCreditLine(AppLocalizations l10n, Dictionary dictionary) {
-  final sources = [
-    for (final credit in dictionary.credits)
-      '${credit.name} (${credit.by}, ${credit.license})',
-  ].join('; ');
+  final sources = {
+    for (final credit in dictionary.credits) credit.name,
+  }.join(', ');
   return switch (dictionary.kind) {
     DictionaryKind.words => l10n.dictionaryCredits(sources),
     DictionaryKind.characters => l10n.dictionaryCharacterCredits(sources),
   };
 }
+
+/// The credits of [dictionary] where its entries show, as their licences
+/// ask: its sources by name in a short line, and a tap on it (or its ⓘ)
+/// shows who made each, under which licence, and where it is found.
+class const DictionarySources({
+  required final Dictionary dictionary,
+  final EdgeInsetsGeometry padding = const EdgeInsets.fromLTRB(16, 4, 4, 4),
+  super.key,
+}) extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
+    final theme = Theme.of(context);
+    final muted = theme.colorScheme.onSurfaceVariant;
+    return InkWell(
+      onTap: () => _showCredits(context),
+      child: Padding(
+        padding: padding,
+        child: Row(
+          children: [
+            Expanded(
+              child: Text(
+                dictionaryCreditLine(l10n, dictionary),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+                style: theme.textTheme.bodySmall?.copyWith(color: muted),
+              ),
+            ),
+            IconButton(
+              tooltip: l10n.dictionarySourcesTitle,
+              icon: Icon(LucideIcons.info, size: 18, color: muted),
+              onPressed: () => _showCredits(context),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _showCredits(BuildContext context) {
+    final l10n = AppLocalizations.of(context);
+    unawaited(
+      showAdaptiveSheet<void>(
+        context,
+        builder: (context) {
+          final theme = Theme.of(context);
+          return SheetScaffold(
+            title: l10n.dictionarySourcesTitle,
+            body: Column(
+              crossAxisAlignment: CrossAxisAlignment.stretch,
+              children: [
+                for (final credit in dictionary.credits)
+                  Padding(
+                    padding: const EdgeInsets.symmetric(vertical: 8),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(credit.name, style: theme.textTheme.titleSmall),
+                        const SizedBox(height: 2),
+                        Text(
+                          '${credit.by} · ${credit.license}',
+                          style: theme.textTheme.bodySmall?.copyWith(
+                            color: theme.colorScheme.onSurfaceVariant,
+                          ),
+                        ),
+                        if (Uri.tryParse(credit.url) case final url?
+                            when url.isScheme('https') || url.isScheme('http'))
+                          InkWell(
+                            onTap: () => launchUrl(
+                              url,
+                              mode: LaunchMode.externalApplication,
+                            ),
+                            child: Text(
+                              credit.url,
+                              style: theme.textTheme.bodySmall?.copyWith(
+                                color: theme.colorScheme.primary,
+                                decoration: TextDecoration.underline,
+                              ),
+                            ),
+                          ),
+                      ],
+                    ),
+                  ),
+              ],
+            ),
+          );
+        },
+      ),
+    );
+  }
+}

halkyon_learn_flutter/test/feature/dictionary/dictionary_screen_test.dart

@@ -147,7 +147,15 @@ void main() {
     await show(tester);
     await addMaterial(tester, 'From the dictionary');
 
+    // Its sources by name in a line; who made them, under which licence,
+    // a tap away.
     expect(find.textContaining('Words from JMdict'), findsOneWidget);
+    expect(find.textContaining('EDRDG'), findsNothing);
+    await tester.tap(find.byTooltip('Sources'));
+    await tester.pumpAndSettle();
+    expect(find.textContaining('EDRDG'), findsOneWidget);
+    await tester.tap(find.byTooltip('Close'));
+    await tester.pumpAndSettle();
     await tester.enterText(find.byType(TextField), 'たべ');
     await tester.pump(const Duration(milliseconds: 300));
     await tester.pumpAndSettle();