graphix-stdlib 0.3.1

A dataflow language for UIs and network programming, standard library
Documentation 
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use tui;
use tui::layout;
use tui::text;
use tui::input_handler;
use tui::block;

let focused = 0;

let handle_event = |e: Event| -> [`Stop, `Continue] select e {
    `Key(k) => select k.kind {
        `Press => select k.code {
            k@`Tab => {
                focused <- ((k ~ focused) + 1) % 3;
                `Stop
            },
            _ => `Continue
        },
        _ => `Continue
    },
    _ => `Continue
};

let focused_border = |i| select focused { n if n == i => `All, _ => [`Top] };
let left_pane = block(#border:&focused_border(0), &text(&"Left"));
let center_pane = block(#border:&focused_border(1), &text(&"Center"));
let right_pane = block(#border:&focused_border(2), &text(&"Right"));

input_handler(
    #handle: &handle_event,
    &layout(
        #direction: &`Horizontal,
        #focused: &focused,
        &[
            child(#constraint: `Percentage(25), left_pane),
            child(#constraint: `Percentage(50), center_pane),
            child(#constraint: `Percentage(25), right_pane)
        ]
    )
)