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|
use once_cell::sync::Lazy;
use tui::{
backend::Backend,
layout::{Constraint, Direction, Layout, Rect},
terminal::Frame,
text::Span,
text::Spans,
widgets::{Block, Borders, Row, Table},
};
use crate::{
app,
canvas::{
drawing_utils::{get_column_widths, get_start_position},
Painter,
},
constants::*,
};
use std::borrow::Cow;
use unicode_segmentation::UnicodeSegmentation;
const DISK_HEADERS: [&str; 7] = ["Disk", "Mount", "Used", "Free", "Total", "R/s", "W/s"];
static DISK_HEADERS_LENS: Lazy<Vec<u16>> = Lazy::new(|| {
DISK_HEADERS
.iter()
.map(|entry| entry.len() as u16)
.collect::<Vec<_>>()
});
pub trait DiskTableWidget {
fn draw_disk_table<B: Backend>(
&self, f: &mut Frame<'_, B>, app_state: &mut app::App, draw_loc: Rect, draw_border: bool,
widget_id: u64,
);
}
impl DiskTableWidget for Painter {
fn draw_disk_table<B: Backend>(
&self, f: &mut Frame<'_, B>, app_state: &mut app::App, draw_loc: Rect, draw_border: bool,
widget_id: u64,
) {
let recalculate_column_widths = app_state.should_get_widget_bounds();
if let Some(disk_widget_state) = app_state.disk_state.widget_states.get_mut(&widget_id) {
let disk_data: &mut [Vec<String>] = &mut app_state.canvas_data.disk_data;
let table_gap = if draw_loc.height < TABLE_GAP_HEIGHT_LIMIT {
0
} else {
app_state.app_config_fields.table_gap
};
let start_position = get_start_position(
usize::from(
(draw_loc.height + (1 - table_gap)).saturating_sub(self.table_height_offset),
),
&disk_widget_state.scroll_state.scroll_direction,
&mut disk_widget_state.scroll_state.previous_scroll_position,
disk_widget_state.scroll_state.current_scroll_position,
app_state.is_force_redraw,
);
let is_on_widget = app_state.current_widget.widget_id == widget_id;
let disk_table_state = &mut disk_widget_state.scroll_state.table_state;
disk_table_state.select(Some(
disk_widget_state
.scroll_state
.current_scroll_position
.saturating_sub(start_position),
));
let sliced_vec = &disk_data[start_position..];
// Calculate widths
let hard_widths = [None, None, Some(4), Some(6), Some(6), Some(7), Some(7)];
if recalculate_column_widths {
disk_widget_state.table_width_state.desired_column_widths = {
let mut column_widths = DISK_HEADERS_LENS.clone();
for row in sliced_vec {
for (col, entry) in row.iter().enumerate() {
if entry.len() as u16 > column_widths[col] {
column_widths[col] = entry.len() as u16;
}
}
}
column_widths
};
disk_widget_state.table_width_state.desired_column_widths = disk_widget_state
.table_width_state
.desired_column_widths
.iter()
.zip(&hard_widths)
.map(|(current, hard)| {
if let Some(hard) = hard {
if *hard > *current {
*hard
} else {
*current
}
} else {
*current
}
})
.collect::<Vec<_>>();
disk_widget_state.table_width_state.calculated_column_widths = get_column_widths(
draw_loc.width,
&hard_widths,
&(DISK_HEADERS_LENS
.iter()
.map(|w| Some(*w))
.collect::<Vec<_>>()),
&[Some(0.2), Some(0.2), None, None, None, None, None],
&(disk_widget_state
.table_width_state
.desired_column_widths
.iter()
.map(|w| Some(*w))
.collect::<Vec<_>>()),
true,
);
}
let dcw = &disk_widget_state.table_width_state.desired_column_widths;
let ccw = &disk_widget_state.table_width_state.calculated_column_widths;
let disk_rows =
sliced_vec.iter().map(|disk_row| {
let truncated_data = disk_row.iter().zip(&hard_widths).enumerate().map(
|(itx, (entry, width))| {
if width.is_none() {
if let (Some(desired_col_width), Some(calculated_col_width)) =
(dcw.get(itx), ccw.get(itx))
{
if *desired_col_width > *calculated_col_width
&& *calculated_col_width > 0
{
let graphemes =
UnicodeSegmentation::graphemes(entry.as_str(), true)
.collect::<Vec<&str>>();
if graphemes.len() > *calculated_col_width as usize
&& *calculated_col_width > 1
{
// Truncate with ellipsis
let first_n = graphemes
[..(*calculated_col_width as usize - 1)]
.concat();
return Cow::Owned(format!("{}…", first_n));
}
}
}
}
Cow::Borrowed(entry)
},
);
Row::Data(truncated_data)
});
// TODO: This seems to be bugged? The selected text style gets "stuck"? I think this gets fixed with tui 0.10?
let (border_style, highlight_style) = if is_on_widget {
(
self.colours.highlighted_border_style,
self.colours.currently_selected_text_style,
)
} else {
(self.colours.border_style, self.colours.text_style)
};
let title = if app_state.is_expanded {
const TITLE_BASE: &str = " Disk ── Esc to go back ";
Spans::from(vec![
Span::styled(" Disk ", self.colours.widget_title_style),
Span::styled(
format!(
"─{}─ Esc to go back ",
"─".repeat(usize::from(draw_loc.width).saturating_sub(
UnicodeSegmentation::graphemes(TITLE_BASE, true).count() + 2
))
),
border_style,
),
])
} else {
Spans::from(Span::styled(" Disk ", self.colours.widget_title_style))
};
let disk_block = if draw_border {
Block::default()
.title(title)
.borders(Borders::ALL)
.border_style(border_style)
} else if is_on_widget {
Block::default()
.borders(*SIDE_BORDERS)
.border_style(self.colours.highlighted_border_style)
} else {
Block::default().borders(Borders::NONE)
};
let margined_draw_loc = Layout::default()
.constraints([Constraint::Percentage(100)])
.horizontal_margin(if is_on_widget || draw_border { 0 } else { 1 })
.direction(Direction::Horizontal)
.split(draw_loc)[0];
// Draw!
f.render_stateful_widget(
Table::new(DISK_HEADERS.iter(), disk_rows)
.block(disk_block)
.header_style(self.colours.table_header_style)
.highlight_style(highlight_style)
.style(self.colours.text_style)
.widths(
&(disk_widget_state
.table_width_state
.calculated_column_widths
.iter()
.map(|calculated_width| Constraint::Length(*calculated_width as u16))
.collect::<Vec<_>>()),
)
.header_gap(table_gap),
margined_draw_loc,
disk_table_state,
);
if app_state.should_get_widget_bounds() {
// Update draw loc in widget map
if let Some(widget) = app_state.widget_map.get_mut(&widget_id) {
widget.top_left_corner = Some((margined_draw_loc.
|
