all_channels: Remove three dot menu and add gesture controls

Make the All channels view UI consistent with the Channels view.
Specifically, onTap on a row item should lead to channel feed page
and onLongPress should launch the channel bottom sheet.

- all_channels: Hide toggle
- all_channels: Add on tap to channel feed if user has content
  access
- all_channels: Add additional end padding for row item, also
  setting top and bottom padding to 2 so that widget height is
atleast 44px

Fixes #1914

Author: chungwwei

lib/widgets/all_channels.dart

@@ -5,11 +5,13 @@ import '../api/route/channels.dart';
 import '../generated/l10n/zulip_localizations.dart';
 import '../log.dart';
 import '../model/channel.dart';
+import '../model/narrow.dart';
 import 'action_sheet.dart';
 import 'actions.dart';
 import 'app_bar.dart';
 import 'button.dart';
 import 'icons.dart';
+import 'message_list.dart';
 import 'page.dart';
 import 'remote_settings.dart';
 import 'store.dart';
@@ -96,28 +98,34 @@ class AllChannelsListEntry extends StatelessWidget {
     final Subscription? subscription = channel is Subscription ? channel : null;
     final hasContentAccess = store.selfHasContentAccess(channel);
 
-    return Padding(
-      padding: EdgeInsetsDirectional.only(start: 8, end: 4),
-      child: Row(spacing: 6, children: [
-        Icon(
-          size: 20,
-          color: colorSwatchFor(context, subscription).iconOnPlainBackground,
-          iconDataForStream(channel)),
-        Expanded(
-          child: Text(
-            style: TextStyle(
-              color: designVariables.textMessage,
-              fontSize: 17,
-              height: 20 / 17,
-            ).merge(weightVariableTextStyle(context, wght: 600)),
-            channel.name)),
-        if (hasContentAccess) _SubscribeToggle(channel: channel),
-        ZulipIconButton(
-          icon: ZulipIcons.more_horizontal,
-          onPressed: () {
-            showChannelActionSheet(context, channelId: channel.streamId);
-          }),
-      ]));
+    return InkWell(
+      onTap: !hasContentAccess ? null : () => Navigator.push(context,
+        MessageListPage.buildRoute(context: context,
+          narrow: ChannelNarrow(channel.streamId))),
+      onLongPress: () => showChannelActionSheet(context, channelId: channel.streamId),
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(8, 2, 12, 2),
+        child: Row(spacing: 6, children: [
+          Icon(
+            size: 20,
+            color: colorSwatchFor(context, subscription).iconOnPlainBackground,
+            iconDataForStream(channel)),
+          Expanded(
+            child: Text(
+              style: TextStyle(
+                color: designVariables.textMessage,
+                fontSize: 17,
+                height: 20 / 17,
+              ).merge(weightVariableTextStyle(context, wght: 600)),
+              channel.name)),
+          // maintain layout whether or not the toggle is shown
+          IgnorePointer(
+            ignoring: !hasContentAccess,
+            child: Opacity(
+              opacity: hasContentAccess ? 1 : 0,
+              child: _SubscribeToggle(channel: channel),
+          ))
+        ])));
   }
 }
 

test/widgets/all_channels_test.dart

@@ -12,6 +12,7 @@ import 'package:zulip/widgets/app_bar.dart';
 import 'package:zulip/widgets/button.dart';
 import 'package:zulip/widgets/home.dart';
 import 'package:zulip/widgets/icons.dart';
+import 'package:zulip/widgets/message_list.dart';
 import 'package:zulip/widgets/page.dart';
 import 'package:zulip/widgets/remote_settings.dart';
 import 'package:zulip/widgets/theme.dart';
@@ -202,21 +203,35 @@ void main() {
       } else {
         check(maybeToggle).isNull();
       }
-
-      check(findInRow(find.byIcon(ZulipIcons.more_horizontal))).findsOne();
     }
   });
 
-  testWidgets('tapping three-dots button opens channel action sheet', (tester) async {
+  testWidgets('open channel action sheet on long press', (tester) async {
     await setupAllChannelsPage(tester, channels: [eg.stream()]);
 
-    await tester.tap(find.byIcon(ZulipIcons.more_horizontal));
+    await tester.longPress(find.byType(AllChannelsListEntry));
     await tester.pump();
     await transitionDurationObserver.pumpPastTransition(tester);
 
     check(find.byType(BottomSheet)).findsOne();
   });
 
+  testWidgets('navigate to channel feed on tap', (tester) async {
+    final channel = eg.stream(name: 'some-channel');
+    await setupAllChannelsPage(tester, channels: [channel]);
+
+    connection.prepare(json: eg.newestGetMessagesResult(
+      foundOldest: true, messages: [eg.streamMessage(stream: channel)]).toJson());
+    await tester.tap(find.byType(AllChannelsListEntry));
+    await tester.pump();
+    await transitionDurationObserver.pumpPastTransition(tester);
+
+    check(find.descendant(
+      of: find.byType(MessageListPage),
+      matching: find.text('some-channel')),
+    ).findsOne();
+  });
+
   testWidgets('use toggle switch to subscribe/unsubscribe', (tester) async {
     final channel = eg.stream();
     await setupAllChannelsPage(tester, channels: [channel]);