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use tui::buffer::Buffer;
use tui::layout::Rect;
use tui::style::{Color, Modifier, Style};
use tui::widgets::Widget;
use unicode_width::UnicodeWidthStr;
use crate::fs::JoshutoDirList;
pub struct TuiDirList<'a> {
dirlist: &'a JoshutoDirList,
}
impl<'a> TuiDirList<'a> {
pub fn new(dirlist: &'a JoshutoDirList) -> Self {
Self { dirlist }
}
}
impl<'a> Widget for TuiDirList<'a> {
fn render(self, area: Rect, buf: &mut Buffer) {
if area.width < 1 || area.height < 1 {
return;
}
if area.width < 4 {
return;
}
let x = area.left();
let y = area.top();
let dir_len = self.dirlist.contents.len();
if dir_len == 0 {
let style = Style::default().bg(Color::Red).fg(Color::White);
buf.set_stringn(x, y, "empty", area.width as usize, style);
return;
}
let curr_index = self.dirlist.index.unwrap();
let skip_dist = curr_index / area.height as usize * area.height as usize;
let screen_index = if skip_dist > 0 {
curr_index % skip_dist
} else {
curr_index
};
let area_width = area.width as usize - 1;
for (i, entry) in self
.dirlist
.iter()
.skip(skip_dist)
.enumerate()
.take(area.height as usize)
{
let name = entry.label();
let name_width = name.width();
let style = if i == screen_index {
entry.get_style().add_modifier(Modifier::REVERSED)
} else {
entry.get_style()
};
let file_type = &entry.metadata.file_type;
if file_type.is_dir() {
if name_width <= area_width {
buf.set_stringn(x, y + i as u16, name, area_width, style);
} else {
buf.set_stringn(x, y + i as u16, name, area_width - 1, style);
buf.set_string(x + area_width as u16 - 1, y + i as u16, "…", style);
}
} else if name_width < area_width {
buf.set_stringn(x, y + i as u16, name, area_width, style);
} else {
match name.rfind('.') {
None => {
buf.set_stringn(x, y + i as u16, name, area_width, style);
}
Some(0) => {
let file_name_width = area_width;
buf.set_stringn(x, y + i as u16, &name, file_name_width, style);
}
Some(p_ind) => {
let ext_width = name[p_ind..].width();
let file_name_width = area_width - ext_width - 1;
buf.set_stringn(x, y + i as u16, &name[..p_ind], file_name_width, style);
buf.set_string(x + file_name_width as u16, y + i as u16, "…", style);
buf.set_string(
x + file_name_width as u16 + 1,
y + i as u16,
&name[p_ind..],
style,
);
}
}
}
}
}
}
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