inbox: Add label for archived channels in headers

Fixes #800

assets/l10n/app_en.arb

@@ -364,6 +364,10 @@
   "@unknownChannelName": {
     "description": "Replacement name for channel when it cannot be found in the store."
   },
+  "channelArchivedLabel": "(archived)",
+  "@channelArchivedLabel": {
+    "description": "Label shown next to an archived channel's name in headers."
+  },
   "composeBoxTopicHintText": "Topic",
   "@composeBoxTopicHintText":  {
     "description": "Hint text for topic input widget in compose box."

lib/generated/l10n/zulip_localizations.dart

@@ -585,6 +585,12 @@ abstract class ZulipLocalizations {
   /// **'(unknown channel)'**
   String get unknownChannelName;
 
+  /// Label shown next to an archived channel's name in headers.
+  ///
+  /// In en, this message translates to:
+  /// **'(archived)'**
+  String get channelArchivedLabel;
+
   /// Hint text for topic input widget in compose box.
   ///
   /// In en, this message translates to:

lib/generated/l10n/zulip_localizations_ar.dart

@@ -286,6 +286,9 @@ class ZulipLocalizationsAr extends ZulipLocalizations {
   @override
   String get unknownChannelName => '(unknown channel)';
 
+  @override
+  String get channelArchivedLabel => '(archived)';
+
   @override
   String get composeBoxTopicHintText => 'Topic';
 

lib/generated/l10n/zulip_localizations_en.dart

@@ -286,6 +286,9 @@ class ZulipLocalizationsEn extends ZulipLocalizations {
   @override
   String get unknownChannelName => '(unknown channel)';
 
+  @override
+  String get channelArchivedLabel => '(archived)';
+
   @override
   String get composeBoxTopicHintText => 'Topic';
 

lib/generated/l10n/zulip_localizations_ja.dart

@@ -286,6 +286,9 @@ class ZulipLocalizationsJa extends ZulipLocalizations {
   @override
   String get unknownChannelName => '(unknown channel)';
 
+  @override
+  String get channelArchivedLabel => '(archived)';
+
   @override
   String get composeBoxTopicHintText => 'Topic';
 

lib/generated/l10n/zulip_localizations_nb.dart

@@ -286,6 +286,9 @@ class ZulipLocalizationsNb extends ZulipLocalizations {
   @override
   String get unknownChannelName => '(unknown channel)';
 
+  @override
+  String get channelArchivedLabel => '(archived)';
+
   @override
   String get composeBoxTopicHintText => 'Topic';
 

lib/generated/l10n/zulip_localizations_pl.dart

@@ -286,6 +286,9 @@ class ZulipLocalizationsPl extends ZulipLocalizations {
   @override
   String get unknownChannelName => '(nieznany kanał)';
 
+  @override
+  String get channelArchivedLabel => '(archived)';
+
   @override
   String get composeBoxTopicHintText => 'Wątek';
 

lib/generated/l10n/zulip_localizations_ru.dart

@@ -286,6 +286,9 @@ class ZulipLocalizationsRu extends ZulipLocalizations {
   @override
   String get unknownChannelName => '(unknown channel)';
 
+  @override
+  String get channelArchivedLabel => '(archived)';
+
   @override
   String get composeBoxTopicHintText => 'Тема';
 

lib/generated/l10n/zulip_localizations_sk.dart

@@ -286,6 +286,9 @@ class ZulipLocalizationsSk extends ZulipLocalizations {
   @override
   String get unknownChannelName => '(unknown channel)';
 
+  @override
+  String get channelArchivedLabel => '(archived)';
+
   @override
   String get composeBoxTopicHintText => 'Topic';
 

lib/widgets/inbox.dart

@@ -222,6 +222,7 @@ abstract class _HeaderItem extends StatelessWidget {
   final _InboxPageState pageState;
   final int count;
   final bool hasMention;
+  final bool isArchived;
 
   /// A build context within the [_StreamSection] or [_AllDmsSection].
   ///
@@ -236,6 +237,7 @@ abstract class _HeaderItem extends StatelessWidget {
     required this.count,
     required this.hasMention,
     required this.sectionContext,
+    this.isArchived = false,
   });
 
   String title(ZulipLocalizations zulipLocalizations);
@@ -284,16 +286,32 @@ abstract class _HeaderItem extends StatelessWidget {
           const SizedBox(width: 5),
           Expanded(child: Padding(
             padding: const EdgeInsets.symmetric(vertical: 4),
-            child: Text(
-              style: TextStyle(
-                fontSize: 17,
-                height: (20 / 17),
-                // TODO(design) check if this is the right variable
-                color: designVariables.labelMenuButton,
-              ).merge(weightVariableTextStyle(context, wght: 600)),
+            child: RichText(
               maxLines: 1,
               overflow: TextOverflow.ellipsis,
-              title(zulipLocalizations)))),
+              text: TextSpan(
+                children: [
+                  TextSpan(
+                    text: title(zulipLocalizations),
+                    style: TextStyle(
+                      fontSize: 17,
+                      height: 20 / 17,
+                      // TODO(design) check if this is the right variable
+                      color: designVariables.labelMenuButton,
+                    ).merge(weightVariableTextStyle(context, wght: 600))),
+                  if (isArchived)
+                    // TODO(#1285): Avoid concatenating translated strings
+                    WidgetSpan(
+                      child: Padding(
+                        padding: EdgeInsetsDirectional.only(start: 4),
+                        child: Text(
+                          ' ${zulipLocalizations.channelArchivedLabel}',
+                          style: TextStyle(
+                            fontSize: 17,
+                            height: 20 / 17,
+                            color: MessageListTheme.of(context).streamRecipientHeaderChevronRight,
+                            fontStyle: FontStyle.italic)))),
+                ])))),
           const SizedBox(width: 12),
           if (hasMention) const _IconMarker(icon: ZulipIcons.at_sign),
           Padding(padding: const EdgeInsetsDirectional.only(end: 16),
@@ -441,6 +459,7 @@ class _StreamHeaderItem extends _HeaderItem {
     required super.count,
     required super.hasMention,
     required super.sectionContext,
+    required super.isArchived,
   });
 
   @override String title(ZulipLocalizations zulipLocalizations) =>
@@ -487,6 +506,7 @@ class _StreamSection extends StatelessWidget {
       collapsed: collapsed,
       pageState: pageState,
       sectionContext: context,
+      isArchived: subscription.isArchived,
     );
     return StickyHeaderItem(
       header: header,

lib/widgets/message_list.dart

@@ -338,6 +338,7 @@ class MessageListAppBarTitle extends StatelessWidget {
     ZulipStream? stream,
   }) {
     final zulipLocalizations = ZulipLocalizations.of(context);
+    final messageListTheme = MessageListTheme.of(context);
     // A null [Icon.icon] makes a blank space.
     final icon = stream != null ? iconDataForStream(stream) : null;
     return Row(
@@ -351,6 +352,15 @@ class MessageListAppBarTitle extends StatelessWidget {
         const SizedBox(width: 4),
         Flexible(child: Text(
           stream?.name ?? zulipLocalizations.unknownChannelName)),
+        if (stream?.isArchived ?? false)
+          Padding(
+            padding: EdgeInsetsDirectional.fromSTEB(4, 4, 0, 4),
+            child: Text(
+              ' ${zulipLocalizations.channelArchivedLabel}',
+              style: TextStyle(
+                fontSize: 18,
+                color: messageListTheme.streamRecipientHeaderChevronRight,
+                fontStyle: FontStyle.italic))),
       ]);
   }
 
@@ -1101,6 +1111,16 @@ class StreamMessageRecipientHeader extends StatelessWidget {
                 style: recipientHeaderTextStyle(context),
                 overflow: TextOverflow.ellipsis),
             ),
+            if (stream?.isArchived ?? false)
+              Padding(
+                padding: const EdgeInsetsDirectional.fromSTEB(4, 4, 0, 4),
+                child: Text(
+                  ' ${zulipLocalizations.channelArchivedLabel}',
+                  style: recipientHeaderTextStyle(context).copyWith(
+                    color: messageListTheme.streamRecipientHeaderChevronRight,
+                    fontStyle: FontStyle.italic),
+                  overflow: TextOverflow.ellipsis,
+                  maxLines: 1)),
             Padding(
               // Figma has 5px horizontal padding around an 8px wide icon.
               // Icon is 16px wide here so horizontal padding is 1px.

test/widgets/inbox_test.dart

@@ -118,17 +118,29 @@ void main() {
 
   /// Find a row with the given label.
   Widget? findRowByLabel(WidgetTester tester, String label) {
-    final rowLabel = tester.widgetList(
-      find.text(label),
-    ).firstOrNull;
-    if (rowLabel == null) {
-      return null;
+    final textFinder = find.text(label);
+    if (textFinder.evaluate().isNotEmpty) {
+      return tester.widget(
+        find.ancestor(
+          of: textFinder.first,
+          matching: find.byType(Row))
+      );
     }
 
-    return tester.widget(
-      find.ancestor(
-        of: find.byWidget(rowLabel),
-        matching: find.byType(Row)));
+    final richTextFinder = find.byWidgetPredicate((widget) =>
+      widget is RichText &&
+      widget.text.toPlainText().contains(label)
+    );
+
+    if (richTextFinder.evaluate().isNotEmpty) {
+      return tester.widget(
+        find.ancestor(
+          of: richTextFinder.first,
+          matching: find.byType(Row))
+      );
+    }
+
+    return null;
   }
 
   /// Find the all-DMs header element.
@@ -595,6 +607,38 @@ void main() {
           check(rectAfterTap).equals(rectBeforeTap);
         });
 
+        testWidgets('shows archived label for archived streams', (tester) async {
+          final stream = eg.stream(streamId: 1, isArchived: true);
+          final subscription = eg.subscription(stream);
+          await setupPage(tester,
+            streams: [stream],
+            subscriptions: [subscription],
+            unreadMessages: [eg.streamMessage(stream: stream)]);
+          await tester.pumpAndSettle();
+
+          final headerRowFinder = findStreamHeaderRow(tester, stream.streamId);
+          check(headerRowFinder).isNotNull();
+
+          final richTextFinder = find.descendant(
+            of: find.byWidget(headerRowFinder!),
+            matching: find.byWidgetPredicate((widget) =>
+              widget is RichText &&
+              widget.text.toPlainText().contains(stream.name)
+            ),
+          );
+          expect(richTextFinder, findsOneWidget);
+
+          final archivedLabelFinder = find.descendant(
+            of: find.byWidget(headerRowFinder),
+            matching: find.text(' (archived)')
+          );
+          expect(archivedLabelFinder, findsOneWidget);
+
+          // Check that the Text widget has italic style
+          final archivedLabelText = tester.widget<Text>(archivedLabelFinder);
+          expect(archivedLabelText.style?.fontStyle, FontStyle.italic);
+        });
+
         // TODO check it remains collapsed even if you scroll far away and back
 
         // TODO check that it's always uncollapsed when it appears after being

test/widgets/message_list_test.dart

@@ -975,6 +975,28 @@ void main() {
         await tester.pump();
         check(pushedRoutes).isEmpty();
       });
+
+      testWidgets('shows archived label for archived streams', (tester) async {
+        final stream = eg.stream(streamId: 1, name: 'stream name', isArchived: true);
+        final message = eg.streamMessage(stream: stream, topic: 'topic');
+
+        await setupMessageListPage(tester,
+          narrow: const CombinedFeedNarrow(),
+          messages: [message],
+          streams: [stream],
+          subscriptions: [eg.subscription(stream)]);
+        await tester.pump();
+
+        check(findInMessageList('stream name')).length.equals(1);
+        check(findInMessageList(" (archived)")).length.equals(1);
+
+        final archivedLabelFinder = find.descendant(
+          of: find.byType(MessageList),
+          matching: find.text(" (archived)"),
+        );
+        final textWidget = tester.widget<Text>(archivedLabelFinder);
+        expect(textWidget.style?.fontStyle, FontStyle.italic);
+      });
     });
 
     group('DmRecipientHeader', () {