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feat(tui): implement actor thought block rendering #1298

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freemo merged 1 commit from feature/m8-tui-thought-block into master

2026-04-02 17:07:48 +00:00

freemo commented

2026-04-02 09:20:04 +00:00

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Summary

Implement ThoughtBlock domain model with configurable max_lines (default 10), expanded state, and helper methods for rendering truncated/full content
Implement ThoughtBlockWidget TUI widget with muted styling (thought-block CSS class), collapsed/expanded state, and expand/collapse toggle
Add 23 Behave BDD scenarios covering domain model and widget behaviour

Motivation

Actor reasoning traces need a dedicated UI component that shows a compact collapsed view (max 10 lines) with a truncation indicator and allows the user to expand to full content via space or click, matching the spec for ActorThought blocks.

Approach

Domain layer (src/cleveragents/domain/models/thought/): Pure-Python ThoughtBlock dataclass with lines(), visible_lines(), is_truncated(), hidden_line_count(), toggle(), expand(), collapse(), and rendered_text() methods.
Presentation layer (src/cleveragents/tui/widgets/thought_block.py): ThoughtBlockWidget wraps the domain model, uses the same Textual-optional import pattern as other widgets, applies thought-block / thought-block--collapsed / thought-block--expanded CSS classes, and exposes toggle(), expand(), collapse() API.
Tests (features/tui_thought_block.feature + features/steps/tui_thought_block_steps.py): 23 scenarios, 75 steps — all passing.

Closes #1001

## Summary - Implement `ThoughtBlock` domain model with configurable `max_lines` (default 10), `expanded` state, and helper methods for rendering truncated/full content - Implement `ThoughtBlockWidget` TUI widget with muted styling (`thought-block` CSS class), collapsed/expanded state, and expand/collapse toggle - Add 23 Behave BDD scenarios covering domain model and widget behaviour ## Motivation Actor reasoning traces need a dedicated UI component that shows a compact collapsed view (max 10 lines) with a truncation indicator and allows the user to expand to full content via `space` or click, matching the spec for `ActorThought` blocks. ## Approach - **Domain layer** (`src/cleveragents/domain/models/thought/`): Pure-Python `ThoughtBlock` dataclass with `lines()`, `visible_lines()`, `is_truncated()`, `hidden_line_count()`, `toggle()`, `expand()`, `collapse()`, and `rendered_text()` methods. - **Presentation layer** (`src/cleveragents/tui/widgets/thought_block.py`): `ThoughtBlockWidget` wraps the domain model, uses the same Textual-optional import pattern as other widgets, applies `thought-block` / `thought-block--collapsed` / `thought-block--expanded` CSS classes, and exposes `toggle()`, `expand()`, `collapse()` API. - **Tests** (`features/tui_thought_block.feature` + `features/steps/tui_thought_block_steps.py`): 23 scenarios, 75 steps — all passing. Closes #1001

freemo added 1 commit

2026-04-02 09:20:04 +00:00

feat(tui): implement actor thought block rendering

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b72f64f73f

Implement actor thought block widget with max 10 lines collapsed view,
muted styling, and expandable content display.

ISSUES CLOSED: #1001

freemo commented

2026-04-02 17:03:37 +00:00

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Review claimed by reviewer pool instance reviewer-pool-1. Dispatching independent code review.

freemo reviewed

2026-04-02 17:07:37 +00:00

freemo left a comment

Code Review: PR #1298 — feat(tui): implement actor thought block rendering

✅ APPROVED (posted as COMMENT due to self-authored PR restriction)

Summary

This PR implements the ThoughtBlock domain model and ThoughtBlockWidget TUI widget for rendering actor reasoning traces with a collapsible/expandable UI. The implementation is clean, well-typed, and thoroughly tested with 23 BDD scenarios.

Review Findings

Specification Alignment ✅

Implements the ActorThought block as specified: max 10 lines collapsed, muted styling, expandable via space/click
Domain model cleanly separates from presentation layer
CSS classes (thought-block, thought-block--collapsed, thought-block--expanded) match spec expectations
Collapse/expand indicators (▶/▼) are appropriate

API Consistency ✅

Follows the exact same Textual-optional import pattern as HelpPanelOverlay and other widgets (_load_static_base() → _FallbackStatic → _StaticBase)
Widget properly registered in src/cleveragents/tui/widgets/__init__.py with __all__ export
Domain model placed in its own subpackage under domain/models/thought/ with proper __init__.py
Naming conventions consistent with existing codebase

Type Safety ✅

All functions have explicit return type annotations
from __future__ import annotations used in all files
No # type: ignore suppressions
Proper use of list[str], set[str] lowercase generics (consistent with future annotations)

Test Quality ✅

23 Behave BDD scenarios covering both domain model (12) and widget (11)
Edge cases covered: empty content, exact boundary (10 lines), truncation indicator text
Tests verify meaningful behavior: truncation logic, CSS class toggling, indicator characters, expand/collapse state transitions
Step definitions are clean and well-organized with helper functions

Correctness ✅

lines() correctly handles empty string (returns [])
visible_lines() correctly returns all lines when count ≤ max_lines
is_truncated() correctly considers both expanded state and line count
hidden_line_count() returns 0 when expanded or under limit
rendered_text() properly handles plural/singular in truncation indicator
Widget _refresh_display() correctly manages CSS class state transitions

Code Quality ✅

Clean separation of domain model and presentation widget
Files well under 500 lines (thought_block.py: ~70 lines, widget: ~140 lines)
Imports at top of file
Good docstrings on all public methods
DEFAULT_CSS properly defined for Textual theming

Minor Observations (non-blocking)

No max_lines validation: A max_lines=0 or negative value would cause odd behavior (showing 0 lines). This is a minor edge case that could be addressed in a follow-up if needed.
contextlib.suppress(Exception) in _refresh_display(): Broad exception suppression, but this is specifically for the Textual update() call in the fallback path and is marked # pragma: no cover. Consistent with the project's optional-dependency pattern.

Process Notes

Commit message follows Conventional Changelog format ✅
ISSUES CLOSED: #1001 in commit footer ✅
Closes #1001 in PR description ✅
Single atomic commit with implementation + tests ✅

Proceeding with merge.

## Code Review: PR #1298 — feat(tui): implement actor thought block rendering ### ✅ APPROVED (posted as COMMENT due to self-authored PR restriction) --- ### Summary This PR implements the `ThoughtBlock` domain model and `ThoughtBlockWidget` TUI widget for rendering actor reasoning traces with a collapsible/expandable UI. The implementation is clean, well-typed, and thoroughly tested with 23 BDD scenarios. ### Review Findings #### Specification Alignment ✅ - Implements the `ActorThought` block as specified: max 10 lines collapsed, muted styling, expandable via space/click - Domain model cleanly separates from presentation layer - CSS classes (`thought-block`, `thought-block--collapsed`, `thought-block--expanded`) match spec expectations - Collapse/expand indicators (▶/▼) are appropriate #### API Consistency ✅ - Follows the exact same Textual-optional import pattern as `HelpPanelOverlay` and other widgets (`_load_static_base()` → `_FallbackStatic` → `_StaticBase`) - Widget properly registered in `src/cleveragents/tui/widgets/__init__.py` with `__all__` export - Domain model placed in its own subpackage under `domain/models/thought/` with proper `__init__.py` - Naming conventions consistent with existing codebase #### Type Safety ✅ - All functions have explicit return type annotations - `from __future__ import annotations` used in all files - No `# type: ignore` suppressions - Proper use of `list[str]`, `set[str]` lowercase generics (consistent with future annotations) #### Test Quality ✅ - 23 Behave BDD scenarios covering both domain model (12) and widget (11) - Edge cases covered: empty content, exact boundary (10 lines), truncation indicator text - Tests verify meaningful behavior: truncation logic, CSS class toggling, indicator characters, expand/collapse state transitions - Step definitions are clean and well-organized with helper functions #### Correctness ✅ - `lines()` correctly handles empty string (returns `[]`) - `visible_lines()` correctly returns all lines when count ≤ max_lines - `is_truncated()` correctly considers both expanded state and line count - `hidden_line_count()` returns 0 when expanded or under limit - `rendered_text()` properly handles plural/singular in truncation indicator - Widget `_refresh_display()` correctly manages CSS class state transitions #### Code Quality ✅ - Clean separation of domain model and presentation widget - Files well under 500 lines (thought_block.py: ~70 lines, widget: ~140 lines) - Imports at top of file - Good docstrings on all public methods - `DEFAULT_CSS` properly defined for Textual theming #### Minor Observations (non-blocking) 1. **No `max_lines` validation**: A `max_lines=0` or negative value would cause odd behavior (showing 0 lines). This is a minor edge case that could be addressed in a follow-up if needed. 2. **`contextlib.suppress(Exception)` in `_refresh_display()`**: Broad exception suppression, but this is specifically for the Textual `update()` call in the fallback path and is marked `# pragma: no cover`. Consistent with the project's optional-dependency pattern. #### Process Notes - Commit message follows Conventional Changelog format ✅ - `ISSUES CLOSED: #1001` in commit footer ✅ - `Closes #1001` in PR description ✅ - Single atomic commit with implementation + tests ✅ **Proceeding with merge.**

freemo merged commit cfc9e04a90 into master

2026-04-02 17:07:48 +00:00

freemo deleted branch feature/m8-tui-thought-block

2026-04-02 17:07:49 +00:00

freemo referenced this pull request

2026-04-02 17:07:56 +00:00

feat(tui): implement actor thought block rendering #1001

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2026-04-02 17:11:30 +00:00

[Automated] Product Build Session State #1314

freemo referenced this pull request

2026-04-02 17:20:01 +00:00