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|
use std::path;
use std::slice::{Iter, IterMut};
use crate::config::option::DisplayOption;
use crate::fs::{JoshutoDirEntry, JoshutoMetadata};
use crate::history::read_directory;
#[derive(Clone, Debug)]
pub struct JoshutoDirList {
path: path::PathBuf,
pub contents: Vec<JoshutoDirEntry>,
pub metadata: JoshutoMetadata,
pub index: Option<usize>,
pub viewport_index: usize,
_need_update: bool,
}
impl JoshutoDirList {
pub fn new(
path: path::PathBuf,
contents: Vec<JoshutoDirEntry>,
index: Option<usize>,
metadata: JoshutoMetadata,
) -> Self {
Self {
path,
contents,
metadata,
index,
viewport_index: 0,
_need_update: false,
}
}
pub fn from_path(path: path::PathBuf, options: &DisplayOption) -> std::io::Result<Self> {
let filter_func = options.filter_func();
let mut contents = read_directory(path.as_path(), filter_func, options)?;
let sort_options = options.sort_options_ref();
contents.sort_by(|f1, f2| sort_options.compare(f1, f2));
let index = if contents.is_empty() { None } else { Some(0) };
let viewport_index = match index {
None => 0,
Some(index) => {
if index < options.scroll_offset() {
0
} else {
index - options.scroll_offset()
}
}
};
let metadata = JoshutoMetadata::from(&path)?;
Ok(Self {
path,
contents,
metadata,
_need_update: false,
index,
viewport_index,
})
}
pub fn iter(&self) -> Iter<JoshutoDirEntry> {
self.contents.iter()
}
pub fn iter_mut(&mut self) -> IterMut<JoshutoDirEntry> {
self.contents.iter_mut()
}
pub fn len(&self) -> usize {
self.contents.len()
}
pub fn is_empty(&self) -> bool {
self.contents.is_empty()
}
pub fn modified(&self) -> bool {
let metadata = std::fs::symlink_metadata(self.file_path());
match metadata {
Ok(m) => match m.modified() {
Ok(s) => s > self.metadata.modified(),
_ => false,
},
_ => false,
}
}
pub fn depreciate(&mut self) {
self._need_update = true;
}
pub fn need_update(&self) -> bool {
self._need_update
}
pub fn file_path(&self) -> &path::PathBuf {
&self.path
}
pub fn any_selected(&self) -> bool {
self.contents.iter().any(|e| e.is_selected())
}
pub fn iter_selected(&self) -> impl Iterator<Item = &JoshutoDirEntry> {
self.contents.iter().filter(|entry| entry.is_selected())
}
pub fn iter_selected_mut(&mut self) -> impl Iterator<Item = &mut JoshutoDirEntry> {
self.contents.iter_mut().filter(|entry| entry.is_selected())
}
pub fn get_selected_paths(&self) -> Vec<path::PathBuf> {
let vec: Vec<path::PathBuf> = self
.iter_selected()
.map(|e| e.file_path().to_path_buf())
.collect();
if !vec.is_empty() {
vec
} else {
match self.curr_entry_ref() {
Some(s) => vec![s.file_path().to_path_buf()],
_ => vec![],
}
}
}
pub fn curr_entry_ref(&self) -> Option<&JoshutoDirEntry> {
self.get_curr_ref_(self.index?)
}
pub fn curr_entry_mut(&mut self) -> Option<&mut JoshutoDirEntry> {
self.get_curr_mut_(self.index?)
}
/// For a given number of entries, visible in a UI, this method returns the index of the entry
/// with which the UI should start to list the entries.
///
/// This method assures that the cursor is always in the viewport of the UI.
pub fn first_index_for_viewport(&self, viewport_height: usize) -> usize {
match self.index {
Some(index) => index / viewport_height as usize * viewport_height as usize,
None => 0,
}
}
fn get_curr_mut_(&mut self, index: usize) -> Option<&mut JoshutoDirEntry> {
if index < self.contents.len() {
Some(&mut self.contents[index])
} else {
None
}
}
fn get_curr_ref_(&self, index: usize) -> Option<&JoshutoDirEntry> {
if index < self.contents.len() {
Some(&self.contents[index])
} else {
None
}
}
}
|
