Making a TextView's style fill to end-of-line

[jwodder]

I have the following code:

use cursive::theme::Color::TerminalDefault;
use cursive::theme::PaletteColor::*;
use cursive::theme::{BorderStyle, Effect, Palette};
use cursive::traits::{Nameable, Resizable, Scrollable, With};
use cursive::view::ScrollStrategy;
use cursive::views::{EditView, LinearLayout, ScrollView, TextView};
use cursive::Cursive;

fn main() {
    let mut siv = cursive::default();
    siv.set_theme(cursive::theme::Theme {
        shadow: false,
        borders: BorderStyle::None,
        palette: Palette::default().with(|palette| {
            palette[Background] = TerminalDefault;
            palette[View] = TerminalDefault;
            palette[Primary] = TerminalDefault;
        }),
    });
    siv.add_layer(
        LinearLayout::vertical()
            .child(
                LinearLayout::vertical()
                    .scrollable()
                    .scroll_strategy(ScrollStrategy::StickToBottom)
                    .with_name("chatbox")
                    .full_height(),
            )
            .child(
                TextView::new("DummyChat(tm)")
                    .style(Effect::Reverse)
                    .full_width(),
            )
            .child(
                EditView::new()
                    .on_submit(sendtext)
                    .filler(" ")
                    .with_name("input"),
            ),
    );
    siv.run();
}

fn sendtext(s: &mut Cursive, line: &str) {
    s.call_on_name("chatbox", |view: &mut ScrollView<LinearLayout>| {
        view.get_inner_mut().add_child(TextView::new(line));
        //view.scroll_to_bottom()
    });
    s.call_on_name("input", |view: &mut EditView| view.set_content(""));
}

which produces the following layout:

As you can see, the "DummyChat(tm)" line is only reverse-highlighted where there is text. I would like the reverse-video highlighting to automatically extend to the end of the line (as though "DummyChat(tm)" were followed by arbitrarily many spaces), no matter how wide the terminal is. How can I do that?

[gyscos]

Hi, and thanks for the question!

I think the easiest solution would be to wrap the TextView in a Layer. Layers just fill their rectangle with a background color, so it would cover any space not written by the TextView.

                Layer::with_color(
                    TextView::new("DummyChat(tm)").style(Effect::Reverse),
                    ColorStyle::primary().invert(),
                )
                .full_width(),