1. Flyology TUI
  2. Components
  3. Split panes

Layout

Split panes

Resize two caller-owned panes at one shared boundary.

Generated previewCharm
Dedicated Split panes example rendered in the Charm skin

The site build compiles the dedicated Ada component example, constructs Split panes through its public API, and exports that exact styled surface. Read the capture source.

When to use it

Use split panes for a two-region editor, navigator, or preview. Use a panel group for three or more panes.

State and ownership

The Flyology_TUI.Components.Split_Panes package defines this component.

The model retains orientation, first span, minima, focus, and capture. Resize computes deterministic child and divider regions.

  • The application model owner applies updates during serial event dispatch.
  • Appearance and skin values are borrowed only while the component renders.

Input and updates

Drag the divider or use arrows while focused. Matching release clears capture after resize or disable changes.

Integration sequence

  1. Create the bounded model and populate it with caller-owned data.
  2. Route the current keyboard or local mouse event through the component handler.
  3. Apply the typed result, then render from the updated model with the current appearance.

See the linked package reference for its exact declarations and contracts.

Responsive and accessible behavior

  • Use dimensions and regions from the current layout or presentation value.
  • When a component owns mouse capture, route its matching release even when the pointer leaves the original bounds.
  • Retain a glyph, label, border, or text-attribute cue when the terminal reduces color.