Incular Docs

use incular::prelude::*;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let selection = TextSelection::new(0, 5);
    let caret = TextSelection::collapsed(5);
    let app = Application::new(move |_cx| {
        Container::builder()
            .padding(EdgeInsets::all(24.0))
            .alignment(Alignment::CENTER)
            .child(Text::new(format!(
                "range {}..{}, collapsed: {}",
                selection.start(),
                selection.end(),
                caret.is_collapsed()
            )))
            .build()
            .into()
    })?;
    incular::run(app)?;
    Ok(())
}

Member	Kind	Notes
`new(base, extent)`	Constructor	Anchor + focus ends
`collapsed(offset)`	Constructor	Caret with no range
`start()` / `end()`	Accessor	Ordered ends
`is_collapsed()`	Query	Base equals extent
`is_forward()`	Query	Extent after base
`range()`	Conversion	As `TextRange`
`clamp_to(text)`	Normalization	Snap to char boundaries

TextRange { start, end }: EMPTY, new, collapsed, is_collapsed, is_valid, len, is_empty, as_range, clamp_to, normalized. TextAffinity: Downstream (default) / Upstream. ComposingRange = TextRange.

Drive the controller with controller.set_selection(TextSelection::new(0, 5)) or controller.set_selection_with_affinity(sel, TextAffinity::Upstream).

Related: TextEditingController.