tcptop/.planning/milestones/v1.0-phases/02-interactive-tui/02-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
02-interactive-tui	02	tui	ratatui crossterm sorting filtering keyboard-navigation cli-flags	phase provides 02-interactive-tui-01 Core TUI framework with draw, event, app modules and main.rs wiring	Fully interactive sort/filter/navigation in TUI CLI filter flags (--port, --pid, --process, --tcp, --udp) Independent column navigation (Tab/Left/Right) and row scrolling (j/k/Up/Down)	03-output-packaging	added patterns Column navigation (Tab/Left/Right) independent of row selection (j/k/Up/Down) CLI filters applied before live filter in filter_records pipeline	created modified tcptop/src/tui/event.rs tcptop/src/tui/draw.rs tcptop/src/tui/app.rs tcptop/src/main.rs	Left/Right arrows navigate column headers, Up/Down arrows scroll rows -- independent axes BackTab (Shift+Tab) added for reverse column navigation	Column and row navigation are orthogonal: column nav keys (Tab/Left/Right) and row nav keys (j/k/Up/Down) never conflict	DISP-03 DISP-07 FILT-01 FILT-02 FILT-03 FILT-04	5min	2026-03-22

Phase 02 Plan 02: Interactive TUI Polish Summary

Sorting, filtering, CLI flags, and independent column/row navigation with Left/Right arrow support

Performance

• Duration: 5 min
• Started: 2026-03-22T02:25:00Z
• Completed: 2026-03-22T02:30:00Z
• Tasks: 2
• Files modified: 4

Accomplishments

• Verified all 9 mnemonic sort keys, Tab/Enter header navigation, filter-as-you-type, CLI filter flags
• Fixed column navigation to work independently of row selection (Left/Right arrows + BackTab)
• Human-verified on Linux VM -- all features working except the column/row navigation conflict (now fixed)

Task Commits

Each task was committed atomically:

1. Task 1: Verify and fix sorting, filtering, and keyboard interactions - 3ea37aa (fix)
2. Task 2: Fix column navigation independent of row selection - ec09dbb (fix)

Files Created/Modified

• tcptop/src/tui/event.rs - Added Left/Right/BackTab for column navigation, kept Up/Down for row scrolling
• tcptop/src/tui/draw.rs - Updated help overlay to document Left/Right column navigation
• tcptop/src/tui/app.rs - Sort, filter, and column index logic (verified, minor fixes in Task 1)
• tcptop/src/main.rs - CLI filter wiring and --interface warning (Task 1)

Decisions Made

• Left/Right arrows map to column header navigation (forward/backward), making them independent of Up/Down row scrolling
• BackTab (Shift+Tab) added for reverse column navigation to match standard terminal conventions

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Column navigation blocked by row selection

• Found during: Task 2 (human-verify checkpoint feedback)
• Issue: After selecting a row with Up/Down arrows, Left/Right arrows and Tab stopped navigating column headers because Left/Right were not bound at all
• Fix: Added KeyCode::Left and KeyCode::Right as column navigation keys alongside Tab; added BackTab for reverse navigation
• Files modified: tcptop/src/tui/event.rs, tcptop/src/tui/draw.rs
• Verification: cargo check passes; column and row navigation are now independent match arms
• Committed in: ec09dbb

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Total deviations: 1 auto-fixed (1 bug) Impact on plan: Essential UX fix -- column navigation was broken when a row was highlighted. No scope creep.

Issues Encountered

• User reported during human-verify that arrow keys stopped working for column navigation after row selection -- root cause was that Left/Right were simply not bound for column navigation (only Tab was). Fixed by adding Left/Right/BackTab handlers.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Full interactive TUI complete with sorting, filtering, CLI flags, and keyboard navigation
• Ready for Phase 03 (output, packaging, tests)
• No blockers

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Phase: 02-interactive-tui Completed: 2026-03-22