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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::{FileType, JoshutoDirEntry, JoshutoDirList};
use crate::util::format;
const FILE_SIZE_WIDTH: usize = 8;
const ELLIPSIS: &str = "…";
pub struct TuiDirListDetailed<'a> {
dirlist: &'a JoshutoDirList,
}
impl<'a> TuiDirListDetailed<'a> {
pub fn new(dirlist: &'a JoshutoDirList) -> Self {
Self { dirlist }
}
}
impl<'a> Widget for TuiDirListDetailed<'a> {
fn render(self, area: Rect, buf: &mut Buffer) {
if area.width < 4 || area.height < 1 {
return;
}
let x = area.left();
let y = area.top();
let curr_index = match self.dirlist.index {
Some(i) => i,
None => {
let style = Style::default().bg(Color::Red).fg(Color::White);
buf.set_stringn(x, y, "empty", area.width as usize, style);
return;
}
};
let drawing_width = area.width as usize - 2;
let skip_dist = curr_index / area.height as usize * area.height as usize;
for (i, entry) in self
.dirlist
.iter()
.skip(skip_dist)
.enumerate()
.take(area.height as usize)
{
let style = entry.get_style();
print_entry(buf, entry, style, (x + 1, y + i as u16), drawing_width);
}
{
let screen_index = curr_index % area.height as usize;
let space_fill = " ".repeat(drawing_width + 1);
let entry = self.dirlist.curr_entry_ref().unwrap();
let style = {
let s = entry.get_style().add_modifier(Modifier::REVERSED);
buf.set_string(x, y + screen_index as u16, space_fill.as_str(), s);
s
};
print_entry(
buf,
entry,
style,
(x + 1, y + screen_index as u16),
drawing_width,
);
}
}
}
fn print_entry(
buf: &mut Buffer,
entry: &JoshutoDirEntry,
style: Style,
(x, y): (u16, u16),
drawing_width: usize,
) {
let name = entry.label();
let name_width = name.width();
match entry.metadata.file_type() {
FileType::Directory => {
// print filename
buf.set_stringn(x, y, name, drawing_width - 1, style);
if name_width > drawing_width {
buf.set_string(x + drawing_width as u16 - 1, y, ELLIPSIS, style);
}
}
FileType::Symlink(_) => {
// print filename
buf.set_stringn(x, y, name, drawing_width - 1, style);
buf.set_string(x + drawing_width as u16 - 4, y, "->", style);
if name_width >= drawing_width - 4 {
buf.set_string(x + drawing_width as u16 - 1, y, ELLIPSIS, style);
}
}
FileType::File => {
if drawing_width < FILE_SIZE_WIDTH {
return;
}
let file_drawing_width = drawing_width - FILE_SIZE_WIDTH;
let (stem, extension) = match name.rfind('.') {
None => (name, ""),
Some(i) => name.split_at(i),
};
if stem.is_empty() {
let ext_width = extension.width();
buf.set_stringn(x, y, extension, file_drawing_width, style);
if ext_width > drawing_width {
buf.set_string(x + drawing_width as u16 - 1, y, ELLIPSIS, style);
}
} else if extension.is_empty() {
let stem_width = stem.width();
buf.set_stringn(x, y, stem, file_drawing_width, style);
if stem_width > file_drawing_width {
buf.set_string(x + drawing_width as u16 - 1, y, ELLIPSIS, style);
}
} else {
let stem_width = stem.width();
let ext_width = extension.width();
buf.set_stringn(x, y, stem, file_drawing_width, style);
if stem_width + ext_width > file_drawing_width {
let ext_start_idx = if file_drawing_width < ext_width {
0
} else {
(file_drawing_width - ext_width) as u16
};
buf.set_string(x + ext_start_idx, y, extension, style);
let ext_start_idx = if ext_start_idx > 0 {
ext_start_idx - 1
} else {
0
};
buf.set_string(x + ext_start_idx, y, ELLIPSIS, style);
} else {
buf.set_string(x + stem_width as u16, y, extension, style);
}
}
// print file size
let file_size_string = format::file_size_to_string(entry.metadata.len());
buf.set_string(x + file_drawing_width as u16, y, " ", style);
buf.set_string(
x + file_drawing_width as u16 + 1,
y,
file_size_string,
style,
);
}
}
}
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