graphix-stdlib 0.3.1

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

let long_text = "Very long text content...";
let position = 0;
let max_position = 100;

let handle_event = |e: Event| -> [`Stop, `Continue] select e {
    `Key(k) => select k.kind {
        `Press => select k.code {
            k@`Up if position > 0 => {
                position <- (k ~ position) - 1;
                `Stop
            },
            k@`Down if position < max_position => {
                position <- (k ~ position) + 1;
                `Stop
            },
            k@`PageUp if position > 10 => {
                position <- (k ~ position) - 10;
                `Stop
            },
            k@`PageDown if position < (max_position - 10) => {
                position <- (k ~ position) + 10;
                `Stop
            },
            k@`Home => { position <- k ~ 0; `Stop },
            k@`End => { position <- k ~ max_position; `Stop },
            _ => `Continue
        },
        _ => `Continue
    },
    _ => `Continue
};

input_handler(
    #handle: &handle_event,
    &block(
        #border: &`All,
        #title: &line("Scrollable Content"),
        &scrollbar(
            #position: &position,
            #content_length: &max_position,
            &paragraph(#scroll: &{x: 0, y: position}, &long_text)
        )
    )
)