Krzysztof kuhy Rudnicki e651b1af17 gatelock: split _scrollable.py 495 -> 243 lines across four modules ... Cut along concerns rather than line counts, so each file answers one question: _scrollfit.py (180) — does the content fit, and what layout follows? _scrollkeys.py (176) — key/wheel bindings and the six scroll commands _userintent.py (106) — was this focus move the user's doing, or the app's? _scrollable.py (243) — the widget wiring and the public surface _scrollfit takes an explicit FitTarget bundle rather than the surface, matching the ArmingCollaborators pattern; UserIntentTracker owns the two fields that answer "did the user just act?", which is the guard that keeps the viewport from scrolling itself under someone who touched nothing. The 45-line module docstring — the three Tk defaults this viewport exists to prevent, and the failure behind each — moved to docs/scrollable-viewport.md rather than being trimmed. It is load-bearing rationale, so it is referenced, not deleted. 389 passed, 100% branch coverage — unchanged. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CFSGeWxHPY5rHUGrPqhcmG		2026-08-22 14:28:21 +02:00
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scrollable-viewport.md	gatelock: split _scrollable.py 495 -> 243 lines across four modules	2026-08-22 14:28:21 +02:00