GroupCard: collapsible summary card with a disclosure member list - #210
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…ber list GroupCard is the disclosure counterpart of PostCard: a header (chevron + source pill + optional status pill + title + muted meta) that, when Actionable, carries a right-aligned download checkbox and an action pill (e.g. "Reconstruct"), and that expands to list its Members one preformatted line per row, divider-separated. It generalises the reader's hand-drawn Usenet group card so a feed no longer hand- draws the multi-part post row. Like PostCard it is passive content: Measure(width) reports the exact height (taller when Expanded), Draw paints the frame + header + members, and the title, meta and member lines are real Labels exposed through Children so CollectRuns lifts them as selectable text runs. The chevron/checkbox/action hit rectangles are exported (ChevronRect / CheckRect / ActionRect / MemberRect) so a list can route clicks. All metrics scale through the global metric scale; the chevron reuses the shared drawDisclosureChevron so it matches Accordion / Expander. 100% statement coverage; gofmt + vet clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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What
GroupCardis the disclosure counterpart ofPostCard. Its header — chevron, coloured source pill, optional status pill (e.g.complete/incomplete), title and muted meta — is always shown; whenActionableit adds a right-aligned download checkbox and an action pill (e.g.Reconstruct); expanding it listsMembers, one preformatted line per row, divider-separated.It generalises the reader's hand-drawn Usenet multi-part group card so a feed no longer hand-draws that row.
Design
PostCard:Measure(width)returns the exact height (taller whenExpanded),Drawpaints frame + header + members.Labels exposed throughChildren, soCollectRunslifts them as selectable text runs.ChevronRect/CheckRect/ActionRect/MemberRect— so a list widget routes clicks.Badge,CheckButtonand the shareddrawDisclosureChevron(matchesAccordion/Expander); all metrics scale through the global metric scale.Tests / gates
Measure),badgeInk,pillWidth,Childrenordering, selectable-run bounds, narrow-width clamps, and full/minimal draw paths.gofmt+go vetclean. Rendered a collapsed + expanded card to PNG for visual confirmation before opening this PR.🤖 Generated with Claude Code