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feat(tui): show the selected parameter index

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This commit is contained in:
Orhun Parmaksız 2022-01-12 00:03:44 +03:00
parent e7e622fa8d
commit 0bb24a3838
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GPG Key ID: F83424824B3E4B90
1 changed files with 100 additions and 14 deletions
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114
systeroid-tui/src/ui.rs
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@ -1,27 +1,44 @@
use crate::app::App;
use tui::backend::Backend;
use tui::layout::{Constraint, Direction, Layout, Rect};
use tui::layout::{Alignment, Constraint, Direction, Layout, Rect};
use tui::style::{Color, Style};
use tui::widgets::{Block, BorderType, Borders, Cell, Paragraph, Row, Table};
use tui::text::{Span, Text};
use tui::widgets::{Block, BorderType, Borders, Cell, Clear, Paragraph, Row, Table};
use tui::Frame;
use unicode_width::UnicodeWidthStr;
/// Renders the user interface.
pub fn render<B: Backend>(frame: &mut Frame<'_, B>, app: &mut App) {
let documentation = app
.parameter_list
.selected()
.and_then(|parameter| parameter.get_documentation());
let rect = frame.size();
let chunks = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
.constraints(if documentation.is_some() {
[Constraint::Percentage(50), Constraint::Percentage(50)]
} else {
[Constraint::Percentage(100), Constraint::Min(0)]
})
.split(rect);
{
let chunks = Layout::default()
.direction(Direction::Vertical)
.constraints([Constraint::Min(rect.height - 3), Constraint::Min(3)].as_ref())
.constraints(if app.input.is_some() {
[Constraint::Min(rect.height - 3), Constraint::Min(3)]
} else {
[Constraint::Percentage(100), Constraint::Min(0)]
})
.split(chunks[0]);
render_parameter_list(frame, chunks[0], app);
render_input_prompt(frame, chunks[1], rect.height - 2, app);
if app.input.is_some() {
render_input_prompt(frame, chunks[1], rect.height - 2, app);
}
}
if let Some(documentation) = documentation {
render_parameter_documentation(frame, chunks[1], documentation);
}
render_parameter_documentation(frame, chunks[1], app);
}
/// Renders the list that contains the sysctl parameters.
@ -51,6 +68,11 @@ fn render_parameter_list<B: Backend>(frame: &mut Frame<'_, B>, rect: Rect, app:
Table::new(rows)
.block(
Block::default()
.title(Span::styled(
"Parameters",
Style::default().fg(Color::White),
))
.title_alignment(Alignment::Left)
.borders(Borders::all())
.border_style(Style::default().fg(Color::White))
.border_type(BorderType::Rounded)
@ -65,19 +87,83 @@ fn render_parameter_list<B: Backend>(frame: &mut Frame<'_, B>, rect: Rect, app:
rect,
&mut app.parameter_list.state,
);
render_selection_text(
frame,
rect,
format!(
"{}/{}",
app.parameter_list
.state
.selected()
.map(|v| v + 1)
.unwrap_or(0),
app.parameter_list.items.len()
),
);
}
/// Renders the text for displaying the selected index.
fn render_selection_text<B: Backend>(frame: &mut Frame<'_, B>, rect: Rect, selection_text: String) {
let selection_text_width = u16::try_from(selection_text.width()).unwrap_or_default();
if let Some(horizontal_area_width) = rect.width.checked_sub(selection_text_width + 2) {
let vertical_area = Layout::default()
.direction(Direction::Vertical)
.constraints(
[
Constraint::Min(rect.height.checked_sub(2).unwrap_or(rect.height)),
Constraint::Min(1),
Constraint::Min(1),
]
.as_ref(),
)
.split(rect);
let horizontal_area = Layout::default()
.direction(Direction::Horizontal)
.constraints(
[
Constraint::Min(horizontal_area_width),
Constraint::Min(selection_text_width),
Constraint::Min(1),
Constraint::Min(1),
]
.as_ref(),
)
.split(vertical_area[1]);
frame.render_widget(Clear, horizontal_area[1]);
frame.render_widget(
Paragraph::new(selection_text).block(
Block::default()
.borders(Borders::NONE)
.style(Style::default().bg(Color::Black)),
),
horizontal_area[1],
);
frame.render_widget(Clear, horizontal_area[2]);
frame.render_widget(
Paragraph::new(Text::default()).block(
Block::default()
.borders(Borders::NONE)
.style(Style::default().bg(Color::Black)),
),
horizontal_area[2],
);
}
}
/// Renders the documentation of the selected sysctl parameter.
fn render_parameter_documentation<B: Backend>(frame: &mut Frame<'_, B>, rect: Rect, app: &mut App) {
fn render_parameter_documentation<B: Backend>(
frame: &mut Frame<'_, B>,
rect: Rect,
documentation: String,
) {
frame.render_widget(
Paragraph::new(
app.parameter_list
.selected()
.and_then(|parameter| parameter.get_documentation())
.unwrap_or_else(|| String::from("No documentation available")),
)
.block(
Paragraph::new(documentation).block(
Block::default()
.title(Span::styled(
"Documentation",
Style::default().fg(Color::White),
))
.title_alignment(Alignment::Center)
.borders(Borders::all())
.border_style(Style::default().fg(Color::White))
.border_type(BorderType::Rounded)