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use ::tui::backend::Backend;
use ::tui::layout::{Alignment, Rect};
use ::tui::style::{Modifier, Style};
use ::tui::terminal::Frame;
use ::tui::widgets::{Paragraph, Text, Widget};
pub struct HelpText {
pub paused: bool,
pub show_dns: bool,
}
const FIRST_WIDTH_BREAKPOINT: u16 = 76;
const SECOND_WIDTH_BREAKPOINT: u16 = 54;
const TEXT_WHEN_PAUSED: &str = " Press <SPACE> to resume.";
const TEXT_WHEN_NOT_PAUSED: &str = " Press <SPACE> to pause.";
const TEXT_WHEN_DNS_NOT_SHOWN: &str = " (DNS queries hidden).";
const TEXT_WHEN_DNS_SHOWN: &str = " (DNS queries shown).";
const TEXT_TAB_TIP: &str = " Use <TAB> to rearrange tables.";
impl HelpText {
pub fn render(&self, frame: &mut Frame<impl Backend>, rect: Rect) {
let text = {
let pause_content = if self.paused {
TEXT_WHEN_PAUSED
} else {
TEXT_WHEN_NOT_PAUSED
};
let dns_content = if rect.width <= FIRST_WIDTH_BREAKPOINT {
""
} else if self.show_dns {
TEXT_WHEN_DNS_SHOWN
} else {
TEXT_WHEN_DNS_NOT_SHOWN
};
let tab_text = if rect.width <= SECOND_WIDTH_BREAKPOINT {
""
} else {
TEXT_TAB_TIP
};
[Text::styled(
format!("{}{}{}", pause_content, tab_text, dns_content),
Style::default().modifier(Modifier::BOLD),
)]
};
Paragraph::new(text.iter())
.alignment(Alignment::Left)
.render(frame, rect);
}
}
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