Expand message long-press hit area to entire cell

[andremion]

Goal

Long-press to open the message actions menu now targets the entire message cell, not the bubble alone. Aligns the long-press surface with the existing swipe-to-reply surface (already cell-wide), gives short one or two character messages an adequate gesture target, and matches the dominant convention on WhatsApp / iMessage.

Implementation

Three commits, intentionally separate so the structural change is reviewable in isolation:

1. Expand message long-press hit area to entire cell — moves the Modifier.combinedClickable from the inner content row (wrapContentWidth) to the outer container (fillMaxWidth), so the click and long-click handlers fire anywhere across the row. Switches indication = null to indication = ripple() so the gesture target is visible to the user. Reaction bar and actions menu remain anchored to the bubble; only the gesture surface widens.
2. Extract message click predicates into named locals — replaces the inline boolean expressions inside the click and long-click lambdas with canOpenThread and canOpenActions, so the gesture handlers read as intent.
3. Collapse message item Box+Row wrapper into a single Row — the outer Box(fillMaxWidth, contentAlignment) was only providing edge alignment, which a Row achieves directly via horizontalArrangement. Drops the redundant Stream_MessageItem test tag (zero references outside this file) and keeps Stream_MessageCell on the merged Row, where it accurately labels the cell that the gesture surface lives on.

API surface

No public API changes. apiDump produces no diff.

🎨 UI Changes

Before	After
Screen_recording_20260430_144412.webm	Screen_recording_20260430_140334.webm

Testing

Run the Compose sample app on a device and open any channel.

1. Hit-area expansion. Long-press in the empty space to the side of a short message bubble (e.g. a one-character "k"). Expected: the message actions menu opens — previously only long-pressing on the bubble itself worked.
2. Ripple feedback. Tap any message anywhere on the row. Expected: a ripple emanates from the touch point across the full row width.
3. Bubble-anchored UI unchanged. Open the message actions menu and the reactions picker. Expected: both remain visually anchored to the bubble, not the cell — the gesture target widened, not the visual anchor.
4. Swipe-to-reply. Horizontal swipe on the row. Expected: works as before — SwipeToReply is still the parent of the merged Row.
5. Thread-start tap. Tap on a message that started a thread, from outside that thread. Expected: opens the thread, exactly as before.
6. Deleted / uploading messages. Long-press a deleted message or one that is mid-upload. Expected: no actions menu appears (gated by canOpenActions).
7. Outgoing vs incoming alignment. Scroll through a mix of own and other-user messages. Expected: outgoing messages remain right-aligned, incoming left-aligned, with the avatar on the correct side.

Summary by CodeRabbit

• Style
  • Enhanced message interactions with ripple effect feedback, improving visual response when tapping messages.
  • Improved message layout structure for better rendering consistency.

[andremion]

@CodeRabbit review

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[github-actions]

PR checklist ✅

All required conditions are satisfied:

• Title length is OK (or ignored by label).
• At least one pr: label exists.
• Sections ### Goal, ### Implementation, and ### Testing are filled.

🎉 Great job! This PR is ready for review.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 682de737-63e1-4dce-b22a-9a4577acd854

📥 Commits

Reviewing files that changed from the base of the PR and between c823b08 and 2a695fe.

📒 Files selected for processing (1)

• stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/messages/list/MessageContainer.kt

---

Walkthrough

The message container's click behavior is now controlled by computed flags (canOpenThread, canOpenActions) instead of inline checks. The layout is refactored from nested Box/Row to a single Row-based cell, click indication uses Material3 ripple(), and horizontal alignment is driven by Row's horizontalArrangement property.

Changes

Cohort / File(s)	Summary
Message Container Refactoring stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/ui/messages/list/MessageContainer.kt	Consolidates click/long-click control into computed flags, introduces Material3 ripple indication, restructures layout from nested Box/Row hierarchy to single Row-based cell, updates test tag to Stream_MessageCell, and uses horizontalArrangement for alignment.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 A message cell hops into place,
No more nested boxes cluttering space,
Ripples shine with Material three,
Computed flags set interactions free,
Layout's cleaner, logic's neater—hop hooray! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately and concisely summarizes the main change: expanding the message long-press hit area to the entire cell.
Description check	✅ Passed	The description covers all required sections: Goal, Implementation, UI Changes with before/after videos, Testing, and includes the Contributor Checklist.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/ds-031-message-cell-tap-area

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[github-actions]

SDK Size Comparison 📏

SDK	Before	After	Difference	Status
stream-chat-android-client	5.82 MB	5.82 MB	0.00 MB	🟢
stream-chat-android-ui-components	11.02 MB	11.02 MB	0.00 MB	🟢
stream-chat-android-compose	12.37 MB	12.37 MB	0.00 MB	🟢

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
65.6% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[stream-public-bot]

🚀 Available in v7.1.0