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|
use super::{DisplayOptions, Traversal, Tree, TreeIndex};
use crate::{get_entry_or_panic, sorted_entries, ByteFormat};
use std::path::PathBuf;
use tui::layout::{Constraint, Direction, Layout};
use tui::style::{Color, Style};
use tui::{
buffer::Buffer,
layout::{Corner, Rect},
widgets::{Block, Borders, List, Text, Widget},
};
pub struct Entries<'a> {
pub tree: &'a Tree,
pub root: TreeIndex,
pub display: DisplayOptions,
pub sorting: SortMode,
pub selected: Option<TreeIndex>,
}
#[derive(Debug, Copy, Clone, PartialOrd, PartialEq, Eq)]
pub enum SortMode {
SizeDescending,
SizeAscending,
}
impl SortMode {
pub fn toggle_size(&mut self) {
use SortMode::*;
*self = match self {
SizeAscending => SizeDescending,
SizeDescending => SizeAscending,
}
}
}
impl Default for SortMode {
fn default() -> Self {
SortMode::SizeDescending
}
}
pub struct DisplayState {
pub root: TreeIndex,
pub selected: Option<TreeIndex>,
pub sorting: SortMode,
}
pub struct MainWindow<'a, 'b> {
pub traversal: &'a Traversal,
pub display: DisplayOptions,
pub state: &'b DisplayState,
}
pub struct Footer {
pub total_bytes: Option<u64>,
pub entries_traversed: u64,
pub format: ByteFormat,
}
impl Widget for Footer {
fn draw(&mut self, area: Rect, buf: &mut Buffer) {
assert!(area.height == 1, "The footer must be a line");
let bg_color = Color::White;
let text_color = Color::Black;
let margin = 1;
self.background(area, buf, bg_color);
buf.set_stringn(
area.x + margin,
area.y,
format!(
"Total disk usage: {} Entries: {}",
match self.total_bytes {
Some(b) => format!("{}", self.format.display(b)).trim().to_owned(),
None => "-".to_owned(),
},
self.entries_traversed
),
(area.width - margin) as usize,
Style {
fg: text_color,
bg: bg_color,
..Default::default()
},
)
}
}
impl<'a, 'b> Widget for MainWindow<'a, 'b> {
fn draw(&mut self, area: Rect, buf: &mut Buffer) {
let Self {
traversal:
Traversal {
tree,
entries_traversed,
total_bytes,
..
},
display,
state,
} = self;
let regions = Layout::default()
.direction(Direction::Vertical)
.constraints([Constraint::Max(256), Constraint::Length(1)].as_ref())
.split(area);
let (entries, footer) = (regions[0], regions[1]);
Entries {
tree: &tree,
root: state.root,
display: *display,
sorting: state.sorting,
selected: state.selected,
}
.draw(entries, buf);
Footer {
total_bytes: *total_bytes,
entries_traversed: *entries_traversed,
format: display.byte_format,
}
.draw(footer, buf);
}
}
impl<'a> Widget for Entries<'a> {
fn draw(&mut self, area: Rect, buf: &mut Buffer) {
let Self {
tree,
root,
display,
sorting,
selected,
} = self;
let is_dir = |mut node_idx| {
const THE_ROOT: usize = 1;
let mut entries = Vec::new();
while let Some(parent_idx) =
tree.neighbors_directed(node_idx, petgraph::Incoming).next()
{
entries.push(get_entry_or_panic(tree, node_idx));
node_idx = parent_idx;
}
entries.push(get_entry_or_panic(tree, node_idx));
entries
.iter()
.rev()
.skip(THE_ROOT)
.fold(PathBuf::new(), |mut acc, entry| {
acc.push(&entry.name);
acc
})
.is_dir()
};
let entries = sorted_entries(tree, *root, *sorting);
let total: u64 = entries.iter().map(|(_, w)| w.size).sum();
List::new(entries.iter().map(|(node_idx, w)| {
let style = match selected {
Some(idx) if *idx == *node_idx => Style {
fg: Color::Black,
bg: Color::White,
..Default::default()
},
_ => Style {
fg: Color::White,
bg: Color::Reset,
..Default::default()
},
};
Text::Styled(
format!(
"{} | {:>5.02}% | {}{}",
display.byte_format.display(w.size),
(w.size as f64 / total as f64) * 100.0,
if is_dir(*node_idx) { "/" } else { " " },
w.name.to_string_lossy()
)
.into(),
style,
)
}))
.block(Block::default().borders(Borders::ALL).title("Entries"))
.start_corner(Corner::TopLeft)
.draw(area, buf);
}
}
|
