Zsolt Tasnadi 4eca9513a8 Add nav DSL to TUI::Page; helpers accumulates across calls ...

Page#nav sets up up/down key handlers for four common patterns:
  nav :menu,   size:    – wrapping @menu_sel selection
  nav :cycle           – wrapping @item_sel over @items
  nav :list,   window: – @item_sel/@scroll with a visible window
  nav :scroll, content:, window: – @scroll over arbitrary content

size/window accept an integer or a lambda evaluated on the Context
at runtime, so terminal-size-dependent values work naturally.

TUI#helpers now accumulates into one module instead of replacing it,
so configure methods on page classes can each extend helpers without
clobbering previous calls.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-05-11 22:17:31 +02:00

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