Feed tabs say what they are

Below xl every feed tab but the selected one was a lone icon with no name, for a screen reader or a finger. DTab takes
an AccessibleName, which DTabs renders as the tab's label and tooltip, and FeedTabs names each tab; on a phone every
tab shows its name too. The strip is marked as one that scrolls sideways (data-scroll-x), says it holds the feeds, and
on a phone fades at the edge where more tabs wait (edge-fade-x, a scroll-driven animation where the browser has one);
the selected tab is brought into view when it changes (window.revealActive). Explore's tabs get the same.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

Components/Daisy/Navigation/DTab.razor

@@ -9,6 +9,8 @@
 	[Parameter] public RenderFragment ChildContent { get; set; }
 	[Parameter] public bool Disabled { get; set; }
 	[Parameter] public string Class { get; set; }
+	/// <summary>The tab's name for a screen reader and as its tooltip, when its Header shows only an icon.</summary>
+	[Parameter] public string AccessibleName { get; set; }
 
 	protected override void OnInitialized()
 	{

Components/Daisy/Navigation/DTabs.razor

@@ -12,6 +12,7 @@
 		var index = i;
 		var tab = tabs[i];
 		<button type="button" role="tab" aria-selected="@(index == Active ? "true" : "false")" disabled="@tab.Disabled"
+				aria-label="@tab.AccessibleName" title="@tab.AccessibleName"
 				class="@Cx("tab", index == Active ? "tab-active" : null, tab.Disabled ? "tab-disabled" : null, tab.Class)"
 				@onclick="() => Select(index)">
 			@tab.Header

Components/Feed/FeedTabs.razor

@@ -6,14 +6,17 @@
    read; the buttons on the right open the composer and, on narrow screens, the globe. *@
 <div class="flex flex-col gap-2">
 	<div class="flex items-center gap-2 min-w-0">
-		<div class="flex-1 min-w-0 overflow-x-auto">
+		@* a sideways strip on a phone, every tab named, the selected one brought into view and the edges faded where more
-			<DTabs Active="ActiveIndex" ActiveChanged="Select" Variant="DTabsVariant.Box" Size="DSize.Sm" ContentClass="hidden" class="flex-nowrap w-max">
+		   tabs wait; from md only the selected tab shows its name until xl *@
+		<div @ref="strip" class="flex-1 min-w-0 overflow-x-auto max-md:edge-fade-x" data-scroll-x>
+			<DTabs Active="ActiveIndex" ActiveChanged="Select" Variant="DTabsVariant.Box" Size="DSize.Sm" ContentClass="hidden" class="flex-nowrap w-max"
+				   aria-label="@Localizer["Feeds"]">
 				@foreach (var type in Types)
 				{
-					<DTab Class="gap-1 whitespace-nowrap">
+					<DTab Class="gap-1 whitespace-nowrap" AccessibleName="@TabName(type)">
 						<Header>
 							<i class="@type.GetTimelineTypeIcon()" aria-hidden="true"></i>
-							<span class="@(type == Filter.TimelineType ? null : "hidden xl:inline")">@TabName(type)</span>
+							<span class="@(type == Filter.TimelineType ? null : "hidden max-md:inline xl:inline")">@TabName(type)</span>
 							@if (type is TimelineType.Notifications && UnreadNotifications > 0)
 							{
 								<DBadge Size="DSize.Xs" Color="DColor.Primary" title="@Localizer["{0} unread", UnreadNotifications]" data-unread>@UnreadNotifications</DBadge>
@@ -127,6 +130,17 @@
 
 	int ActiveIndex => Types.IndexOf(Filter.TimelineType);
 
+	ElementReference strip;
+	int revealed = -1;
+
+	protected override void OnAfterRender(bool firstRender)
+	{
+		if (ActiveIndex == revealed)
+			return;
+		revealed = ActiveIndex;
+		CascadingState.Status.RevealActive(strip);
+	}
+
 	ViewGroup SelectedGroup => Groups.FirstOrDefault(g => g.Id == Filter.GroupId);
 
 	[Inject] DiscoveryService DiscoveryService { get; set; }

Pages/Explore.razor

@@ -14,8 +14,9 @@
 			<h1 class="font-bold truncate">@Localizer["Explore"]</h1>
 		</div>
 
-		<div class="overflow-x-auto flex-none">
+		<div @ref="strip" class="overflow-x-auto flex-none max-md:edge-fade-x" data-scroll-x>
-			<DTabs Active="(int)tab" ActiveChanged="SelectTab" Variant="DTabsVariant.Box" Size="DSize.Sm" ContentClass="hidden" class="flex-nowrap w-max">
+			<DTabs Active="(int)tab" ActiveChanged="SelectTab" Variant="DTabsVariant.Box" Size="DSize.Sm" ContentClass="hidden" class="flex-nowrap w-max"
+				   aria-label="@Localizer["Explore"]">
 				<DTab><Header><i class="ion-md-pricetag"></i> @Localizer["Hashtags"]</Header></DTab>
 				<DTab><Header><i class="ion-md-flame"></i> @Localizer["Popular posts"]</Header></DTab>
 				<DTab><Header><i class="ion-md-link"></i> @Localizer["Shared links"]</Header></DTab>
@@ -139,6 +140,17 @@
 </section>
 
 @code {
+	ElementReference strip;
+	int revealed = -1;
+
+	protected override void OnAfterRender(bool firstRender)
+	{
+		if ((int)tab == revealed)
+			return;
+		revealed = (int)tab;
+		CascadingState.Status.RevealActive(strip);
+	}
+
 	enum ExploreTab
 	{
 		Hashtags,

Resources/AllStrings.it.resx

@@ -1853,4 +1853,7 @@
   <data name="Every persona of this login is signed out on this device." xml:space="preserve">
     <value>Tutte le persone di questo accesso escono da questo dispositivo.</value>
   </data>
+  <data name="Feeds" xml:space="preserve">
+    <value>Feed</value>
+  </data>
 </root>

Resources/AllStrings.resx

@@ -1853,4 +1853,7 @@
   <data name="Every persona of this login is signed out on this device." xml:space="preserve">
     <value>Every persona of this login is signed out on this device.</value>
   </data>
+  <data name="Feeds" xml:space="preserve">
+    <value>Feeds</value>
+  </data>
 </root>

Services/AppStatusService.cs

@@ -1,3 +1,4 @@
+using Microsoft.AspNetCore.Components;
 using decePubClient.Models;
 
 using Microsoft.JSInterop;
@@ -41,6 +42,9 @@ public class AppStatusService(IJSRuntime jsRuntime)
 
 		public bool IsMobileMedia() => JsSyncRuntime.Invoke<bool>("isMobileMedia");
 
+		// a sideways-scrolling strip of tabs shows its selected tab
+		public void RevealActive(ElementReference strip) => JsSyncRuntime.InvokeVoid("revealActive", strip);
+
 		public bool CanShare() => JsSyncRuntime.Invoke<bool>("canShareStuff");
 
 		public async ValueTask ShareTextUrl(string title, string text, Uri uri, CancellationToken cancellationToken = default) =>

Styles/touch.css

@@ -112,3 +112,46 @@
 		}
 	}
 }
+
+/* A sideways strip fades at the edge where more of it waits: the right edge at first, both while scrolled, the left
+   at the end (a scroll-driven animation where the browser has one; without, the right edge only). */
+@property --fade-start {
+	syntax: "<length>";
+	inherits: false;
+	initial-value: 0px;
+}
+
+@property --fade-end {
+	syntax: "<length>";
+	inherits: false;
+	initial-value: 1.5rem;
+}
+
+@keyframes edge-fade-x {
+	from {
+		--fade-start: 0px;
+		--fade-end: 1.5rem;
+	}
+
+	8% {
+		--fade-start: 1.5rem;
+	}
+
+	92% {
+		--fade-end: 1.5rem;
+	}
+
+	to {
+		--fade-start: 1.5rem;
+		--fade-end: 0px;
+	}
+}
+
+@utility edge-fade-x {
+	mask-image: linear-gradient(to right, transparent, #000 var(--fade-start), #000 calc(100% - var(--fade-end)), transparent);
+
+	@supports (animation-timeline: scroll()) {
+		animation: edge-fade-x linear both;
+		animation-timeline: scroll(self inline);
+	}
+}

wwwroot/main.js

@@ -123,6 +123,15 @@ window.clearAppBadge = () => {
 		window.logFromJs(e.message, "clearAppBadge")
 	}
 }
+// the selected tab of a sideways-scrolling strip, brought into its middle
+window.revealActive = strip => {
+	try {
+		strip?.querySelector("[aria-selected=true]")?.scrollIntoView({ inline: "center", block: "nearest" })
+	} catch (e) {
+		console.error(e)
+		window.logFromJs(e.message, "revealActive")
+	}
+}
 // a phone: narrower than Tailwind's md, or held sideways (as short as the short: variant)
 window.isMobileMedia = () => {
 	try {