ADFA-4471 | Fix SwipeRevealLayout intercepting editor scroll gestures

[jatezzz]

Description

Fixed an issue where SwipeRevealLayout would inadvertently steal vertical scroll gestures from the overlapping editor content. The vertical drag-to-reveal gesture is now strictly captured only if the initial touch-down event lands within the bounds of the configured drag handle. Furthermore, the drag handle in the editor layout was updated to map to the editor_appBarLayout.

Details

• Added a touch bounds-check (isTouchInDragHandle) on ACTION_DOWN to verify the gesture's origin.
• Updated activity_editor.xml to point app:dragHandle to @id/editor_appBarLayout instead of the project actions toolbar.
• Refactored obtainStyledAttributes to use the more idiomatic withStyledAttributes extension from AndroidX Core.

document_5042282667677059376.mp4

Ticket

ADFA-4471

Observation

The logic preserves legacy behavior: if a SwipeRevealLayout instance has a dragHandleViewId of 0 (no handle configured), the entire overlapping content will continue to act as the handle.

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[coderabbitai]

📝 Walkthrough

• Fixed SwipeRevealLayout so drag-to-reveal only starts when the initial touch-down is inside the configured drag handle, preventing it from intercepting vertical scroll gestures from overlapping editor content.
• Kept existing behavior when no drag handle is configured (dragHandleViewId == 0), where the full overlapping content still acts as the handle.
• Updated the editor layout to use @id/editor_appBarLayout as the swipe drag handle instead of @id/project_actions_toolbar.
• Refactored styled attribute loading to use AndroidX Core’s withStyledAttributes extension instead of manual obtainStyledAttributes/recycle handling.
• Risk: changing the drag handle target may affect swipe discoverability or interaction behavior for users relying on the previous toolbar area.

Walkthrough

SwipeRevealLayout now tracks whether the latest ACTION_DOWN landed inside its configured drag handle before allowing vertical drag capture. The handle attribute is read with withStyledAttributes, and activity_editor.xml now points the handle at editor_appBarLayout.

Changes

Swipe-reveal handle gating

Layer / File(s)	Summary
Handle-based capture gating app/src/main/java/com/itsaky/androidide/ui/SwipeRevealLayout.kt	SwipeRevealLayout now reads dragHandleViewId with withStyledAttributes, tracks whether ACTION_DOWN landed inside the drag handle, and only allows vertical capture when that state is true.
Editor handle wiring app/src/main/res/layout/activity_editor.xml	SwipeRevealLayout in the editor layout now uses editor_appBarLayout as its app:dragHandle target.

Sequence Diagram(s)

sequenceDiagram
participant MotionEvent
participant SwipeRevealLayout
participant editor_appBarLayout
participant dragHelperCallback
MotionEvent->>SwipeRevealLayout: ACTION_DOWN
SwipeRevealLayout->>editor_appBarLayout: getLocationOnScreen()
SwipeRevealLayout->>SwipeRevealLayout: isTouchInDragHandle()
SwipeRevealLayout->>dragHelperCallback: tryCaptureView()
dragHelperCallback->>SwipeRevealLayout: allow capture only when vertical drag is enabled and the touch-down was inside the handle

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Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• appdevforall/CodeOnTheGo#755 — Also updates the app:dragHandle target used by SwipeRevealLayout, so the handle-based capture logic here is closely tied to that wiring.
• appdevforall/CodeOnTheGo#1388 — Also changes SwipeRevealLayout vertical drag behavior and the conditions under which it can capture.

Suggested reviewers

• itsaky-adfa
• Daniel-ADFA

Poem

A bunny tapped the app bar with a paw,
Then hopped away if the touch fell short of the draw.
Inside the handle, the panel starts to glide,
SwipeRevealLayout keeps the opening tied.
🐇

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 16.67% 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 clearly matches the main change: fixing SwipeRevealLayout from intercepting editor scroll gestures.
Description check	✅ Passed	The description accurately describes the implemented fix, layout update, and styled-attribute refactor.
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.

✨ 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/ADFA-4471-swipe-reveal-drag-intercept

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[coderabbitai]

🧹 Nitpick comments (1)

app/src/main/java/com/itsaky/androidide/ui/SwipeRevealLayout.kt (1)

71-77: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick win

Misplaced KDoc — it documents isDownInDragHandle but is attached to dragHandleLocation.

The doc block sits between the two property declarations, so it binds to dragHandleLocation while its text describes isDownInDragHandle. Move it above isDownInDragHandle.

♻️ Proposed fix

- private var isDownInDragHandle = false- /**- * Whether the most recent touch-down landed within the configured drag handle. The vertical- * drag-to-reveal gesture is only captured when this is `true`, so that scroll gestures starting- * in the middle of the overlapping content (e.g. the editor) are not stolen.- */- private val dragHandleLocation = IntArray(2)+ /**+ * Whether the most recent touch-down landed within the configured drag handle. The vertical+ * drag-to-reveal gesture is only captured when this is `true`, so that scroll gestures starting+ * in the middle of the overlapping content (e.g. the editor) are not stolen.+ */+ private var isDownInDragHandle = false++ private val dragHandleLocation = IntArray(2)

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@app/src/main/java/com/itsaky/androidide/ui/SwipeRevealLayout.kt` around lines
71 - 77, The KDoc currently attaches to dragHandleLocation even though it
describes isDownInDragHandle; move the documentation block so it directly
precedes isDownInDragHandle in SwipeRevealLayout, keeping dragHandleLocation
undocumented or adding a separate comment if needed. Ensure the property order
and comment placement match the intent of the drag-reveal gesture state.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@app/src/main/java/com/itsaky/androidide/ui/SwipeRevealLayout.kt`:
- Around line 71-77: The KDoc currently attaches to dragHandleLocation even
though it describes isDownInDragHandle; move the documentation block so it
directly precedes isDownInDragHandle in SwipeRevealLayout, keeping
dragHandleLocation undocumented or adding a separate comment if needed. Ensure
the property order and comment placement match the intent of the drag-reveal
gesture state.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 07486f25-4602-4f6a-a023-e5706bd51641

📥 Commits

Reviewing files that changed from the base of the PR and between c14733b and d6dc508.

📒 Files selected for processing (2)

• app/src/main/java/com/itsaky/androidide/ui/SwipeRevealLayout.kt
• app/src/main/res/layout/activity_editor.xml