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docs: gate list-header content on both workspace navigation lists - #3414
BC-099 and the migration guide tell apps how to show list-header content (a sidebar toggle, for example) only while something is open beside the list: hide it while openThreads is empty in the thread list header, or while openChannels is empty in the channel list header. That gate misses stacked panels.
openChannels / openThreads hold what is bound to the workspace's panels (bindingOf(slot) in workspaceNavigationAdapter.tsx). A channel or thread opened over another one in the same panel becomes a layer and is not in them. Example: a channel is open in a panel and the user opens a thread over it. The thread is on screen, openThreads is empty, and a thread-list toggle gated on it disappears.
🛠 Implementation details
A stacked layer always sits over a bound item, so "something is open beside the list" is either list being non-empty.
ai-docs/ai-migration-v14-v15.md (list-headers section) and BC-099 in ai-docs/v15-breaking-changes.md explain this, use the either-list check in the example, and point to isChannelActive(cid) / isThreadActive(threadId) for whether a given channel or thread is on screen. The note that ChatView or a WorkspaceNavigationProvider has to fill the lists stays.
The vite example (SidebarToggleWhileContentOpen in examples/vite/src/Sidebar/HeaderContent.tsx) and the collapsible-sidebar cookbook recipe show the toggle while either list is non-empty.
No src change.
Docs to update in getstream.io (v15-rc): 05-ui-cookbooks/10-layout/04-collapsible-sidebar.md, whose code mirrors the recipe.
🎨 UI Changes
None in the usual layouts: the toggle shows next to an open channel or thread, as before. It now also shows when a thread is stacked over a channel in the same panel.
Summary by CodeRabbit
New Features
The sidebar toggle now appears when either a workspace-opened channel or thread is present.
Documentation
Clarified that open-channel and open-thread lists exclude items stacked over other panel types, while active-state checks indicate what is on screen.
Added guidance to use layout view state for other panel layouts and app-owned selection state when workspace navigation is unavailable.
openChannels and openThreads hold what is bound to the workspace's panels.
A channel or thread opened over another one in the same panel is not in
them, so a thread stacked over a channel is on screen while openThreads is
empty. It always sits over a bound item, so "something is open beside the
list" is either list being non-empty.
The migration guide and BC-099 now say so and point to isChannelActive /
isThreadActive for whether a given channel or thread is on screen. The vite
example and the collapsible-sidebar recipe show the sidebar toggle while
either list is non-empty.
No actionable comments were generated in the recent review.
Walkthrough
The sidebar toggle now renders when either openChannels or openThreads is non-empty. The Vite and cookbook examples use the shared toggle, and the migration guidance describes stacked content and active-state checks.
Changes: Sidebar toggle behavior
Layer / File(s)
Summary
Combined toggle behavior and guidance examples/vite/src/Sidebar/HeaderContent.tsx, examples/vite/src/ChatLayout/SwitchableChannelNavigation.tsx, examples/cookbook/src/recipes/layout/collapsible-sidebar/views.tsx, ai-docs/ai-migration-v14-v15.md, ai-docs/v15-breaking-changes.md
The examples use a shared toggle that renders when openChannels or openThreads is non-empty. The guidance explains that stacked content may not appear in those lists and identifies active-state methods for checking whether a specific channel or thread is on screen.
GetStream/stream-chat-react#3361: Describes where components must render to read workspace navigation and when openChannels is empty.
Merge Risk: Minimal · up to 40f2e
The combined toggle and guidance are mergeable based on the available evidence.
Pre-merge checks: 5
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Title check
The title describes the change to check both workspace navigation lists for list-header content.
Description check
The description covers the goal, implementation, and UI changes. It does not include a screenshot of the changed stacked-panel behavior; adding one would improve the description.
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No eligible functions found in the changed files. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…
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Actionable comments posted: 1
Fix comments: Fix CodeRabbit comments on this PR
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Review comments at @ai-docs/ai-migration-v14-v15.md:
- Around line 1693-1697: Update the example and BC-099 content gate to use the
layout’s visible slot state when rendering layers without a base binding;
restrict the openChannels/openThreads combined-list check to bound content.
Reuse the established layout state API, identifying the appropriate visible-slot
symbol in the surrounding code rather than assuming an API.
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…tion list
A panel opened with a userProfile, even with a channel stacked over it, is
not in openChannels or openThreads. The guide and BC-099 say so and point
layouts with such panels to useLayoutViewState(); the example comments no
longer claim a stacked item always sits over a listed one.
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Ticket: https://linear.app/stream/issue/REACT-1449
Follow-up to #3406.
🎯 Goal
BC-099 and the migration guide tell apps how to show list-header content (a sidebar toggle, for example) only while something is open beside the list: hide it while
openThreadsis empty in the thread list header, or whileopenChannelsis empty in the channel list header. That gate misses stacked panels.openChannels/openThreadshold what is bound to the workspace's panels (bindingOf(slot)inworkspaceNavigationAdapter.tsx). A channel or thread opened over another one in the same panel becomes a layer and is not in them. Example: a channel is open in a panel and the user opens a thread over it. The thread is on screen,openThreadsis empty, and a thread-list toggle gated on it disappears.🛠 Implementation details
ai-docs/ai-migration-v14-v15.md(list-headers section) and BC-099 inai-docs/v15-breaking-changes.mdexplain this, use the either-list check in the example, and point toisChannelActive(cid)/isThreadActive(threadId)for whether a given channel or thread is on screen. The note thatChatViewor aWorkspaceNavigationProviderhas to fill the lists stays.SidebarToggleWhileContentOpeninexamples/vite/src/Sidebar/HeaderContent.tsx) and the collapsible-sidebar cookbook recipe show the toggle while either list is non-empty.No
srcchange.Docs to update in getstream.io (
v15-rc):05-ui-cookbooks/10-layout/04-collapsible-sidebar.md, whose code mirrors the recipe.🎨 UI Changes
None in the usual layouts: the toggle shows next to an open channel or thread, as before. It now also shows when a thread is stacked over a channel in the same panel.
Summary by CodeRabbit