forked from Mirrors/helix
tree helper and file explorer
cossonleo
3 years ago
parent
28c5e2170e
commit
b652f96449
@ -0,0 +1,867 @@
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use super::{Prompt, Tree, TreeItem, TreeOp};
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use crate::{
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compositor::{Component, Compositor, Context, EventResult},
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ctrl, key, shift, ui,
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};
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use anyhow::{bail, ensure, Result};
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use helix_core::Position;
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use helix_view::{
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editor::Action,
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graphics::{CursorKind, Modifier, Rect},
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input::{Event, KeyEvent},
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Editor,
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};
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use std::borrow::Cow;
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use std::cmp::Ordering;
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use std::path::{Path, PathBuf};
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use tui::{
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buffer::Buffer as Surface,
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text::{Span, Spans},
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widgets::{Block, Borders, Widget},
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};
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macro_rules! get_theme {
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($theme: expr, $s1: expr, $s2: expr) => {
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$theme.try_get($s1).unwrap_or_else(|| $theme.get($s2))
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};
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}
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#[derive(Debug, Clone, Copy, PartialEq)]
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enum FileType {
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File,
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Dir,
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Exe,
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Placeholder,
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Parent,
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Root,
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}
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#[derive(Debug, Clone)]
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struct FileInfo {
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file_type: FileType,
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path: PathBuf,
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}
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impl FileInfo {
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fn new(path: PathBuf, file_type: FileType) -> Self {
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Self { path, file_type }
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}
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fn root(path: PathBuf) -> Self {
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Self {
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file_type: FileType::Root,
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path,
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}
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}
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fn parent(path: &Path) -> Self {
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let p = path.parent().unwrap_or_else(|| Path::new(""));
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Self {
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file_type: FileType::Parent,
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path: p.to_path_buf(),
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}
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}
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fn get_text(&self) -> Cow<'static, str> {
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match self.file_type {
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FileType::Parent => "..".into(),
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FileType::Placeholder => "---".into(),
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FileType::Root => return format!("{}", self.path.display()).into(),
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FileType::File | FileType::Exe | FileType::Dir => self
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.path
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.file_name()
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.map_or("/".into(), |p| p.to_string_lossy().into_owned().into()),
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}
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}
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}
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impl TreeItem for FileInfo {
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type Params = State;
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fn text(&self, cx: &mut Context, selected: bool, state: &mut State) -> Spans {
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let text = self.get_text();
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let theme = &cx.editor.theme;
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let style = match self.file_type {
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FileType::Parent | FileType::Dir | FileType::Root => "ui.explorer.dir",
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FileType::File | FileType::Exe | FileType::Placeholder => "ui.explorer.file",
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};
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let mut style = theme.try_get(style).unwrap_or_else(|| theme.get("ui.text"));
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if selected {
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let patch = match state.focus {
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true => "ui.explorer.focus",
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false => "ui.explorer.unfocus",
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};
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if let Some(patch) = theme.try_get(patch) {
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style = style.patch(patch);
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} else {
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style = style.add_modifier(Modifier::REVERSED);
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}
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}
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Spans::from(Span::styled(text, style))
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}
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fn is_child(&self, other: &Self) -> bool {
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if let FileType::Parent = other.file_type {
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return false;
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}
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if let FileType::Placeholder = self.file_type {
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self.path == other.path
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} else {
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self.path.parent().map_or(false, |p| p == other.path)
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}
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}
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fn cmp(&self, other: &Self) -> Ordering {
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use FileType::*;
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match (self.file_type, other.file_type) {
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(Parent, _) => return Ordering::Less,
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(_, Parent) => return Ordering::Greater,
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(Root, _) => return Ordering::Less,
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(_, Root) => return Ordering::Greater,
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_ => {}
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};
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if self.path == other.path {
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match (self.file_type, other.file_type) {
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(_, Placeholder) => return Ordering::Less,
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(Placeholder, _) => return Ordering::Greater,
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_ => {}
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};
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}
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if let (Some(p1), Some(p2)) = (self.path.parent(), other.path.parent()) {
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if p1 == p2 {
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match (self.file_type, other.file_type) {
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(Dir, File | Exe) => return Ordering::Less,
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(File | Exe, Dir) => return Ordering::Greater,
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_ => {}
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};
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}
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}
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self.path.cmp(&other.path)
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}
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fn get_childs(&self) -> Result<Vec<Self>> {
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match self.file_type {
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FileType::Root | FileType::Dir => {}
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_ => return Ok(vec![]),
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};
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let mut ret: Vec<_> = std::fs::read_dir(&self.path)?
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.filter_map(|entry| entry.ok())
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.filter_map(|entry| {
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entry.metadata().ok().map(|meta| {
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let is_exe = false;
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let file_type = match (meta.is_dir(), is_exe) {
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(true, _) => FileType::Dir,
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(_, false) => FileType::File,
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(_, true) => FileType::Exe,
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};
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Self {
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file_type,
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path: self.path.join(entry.file_name()),
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}
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})
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})
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.collect();
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if ret.is_empty() {
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ret.push(Self {
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path: self.path.clone(),
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file_type: FileType::Placeholder,
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})
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}
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Ok(ret)
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}
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fn filter(&self, _cx: &mut Context, s: &str, _params: &mut Self::Params) -> bool {
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if s.is_empty() {
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false
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} else {
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self.get_text().contains(s)
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}
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}
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}
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// #[derive(Default, Debug, Clone)]
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// struct PathState {
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// root: PathBuf,
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// sub_items: Vec<FileInfo>,
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// selected: usize,
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// save_view: (usize, usize), // (selected, row)
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// row: usize,
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// col: usize,
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// max_len: usize,
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// }
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// impl PathState {
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// fn mkdir(&mut self, dir: &str) -> Result<()> {
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// self.new_path(dir, FileType::Dir)
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// }
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// fn create_file(&mut self, f: &str) -> Result<()> {
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// self.new_path(f, FileType::File)
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// }
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// fn remove_current_file(&mut self) -> Result<()> {
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// let item = &self.sub_items[self.selected];
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// std::fs::remove_file(item.path_with_root(&self.root))?;
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// self.sub_items.remove(self.selected);
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// if self.selected >= self.sub_items.len() {
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// self.selected = self.sub_items.len() - 1;
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// }
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// Ok(())
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// }
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// }
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#[derive(Clone, Copy, Debug)]
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enum PromptAction {
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Search(bool), // search next/search pre
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Mkdir,
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CreateFile,
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RemoveDir,
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RemoveFile,
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Filter,
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}
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#[derive(Clone, Debug)]
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struct State {
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focus: bool,
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current_root: PathBuf,
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}
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impl State {
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fn new(focus: bool, current_root: PathBuf) -> Self {
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Self {
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focus,
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current_root,
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}
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}
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}
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pub struct Explorer {
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tree: Tree<FileInfo>,
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state: State,
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prompt: Option<(PromptAction, Prompt)>,
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#[allow(clippy::type_complexity)]
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on_next_key: Option<Box<dyn FnMut(&mut Context, &mut Self, KeyEvent) -> EventResult>>,
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#[allow(clippy::type_complexity)]
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repeat_motion: Option<Box<dyn FnMut(&mut Self, PromptAction, &mut Context) + 'static>>,
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}
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impl Explorer {
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pub fn new(cx: &mut Context) -> Result<Self> {
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let current_root = std::env::current_dir().unwrap_or_else(|_| "./".into());
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let items = Self::get_items(current_root.clone(), cx)?;
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Ok(Self {
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tree: Tree::build_tree(items).with_enter_fn(Self::toggle_current),
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state: State::new(true, current_root),
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repeat_motion: None,
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prompt: None,
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on_next_key: None,
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})
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}
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pub fn new_explorer_recursion() -> Result<Self> {
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let current_root = std::env::current_dir().unwrap_or_else(|_| "./".into());
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let parent = FileInfo::parent(¤t_root);
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let root = FileInfo::root(current_root.clone());
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let mut tree =
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Tree::build_from_root(root, usize::MAX / 2)?.with_enter_fn(Self::toggle_current);
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tree.insert_current_level(parent);
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Ok(Self {
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tree,
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state: State::new(true, current_root),
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repeat_motion: None,
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prompt: None,
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on_next_key: None,
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})
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// let mut root = vec![, FileInfo::root(p)];
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}
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// pub fn new_with_uri(uri: String) -> Result<Self> {
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// // support remote file?
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// let p = Path::new(&uri);
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// ensure!(p.exists(), "path: {uri} is not exist");
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// ensure!(p.is_dir(), "path: {uri} is not dir");
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// Ok(Self::default().with_list(get_sub(p, None)?))
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// }
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pub fn focus(&mut self) {
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self.state.focus = true
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}
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pub fn unfocus(&mut self) {
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self.state.focus = false;
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}
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pub fn is_focus(&self) -> bool {
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self.state.focus
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}
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fn get_items(p: PathBuf, cx: &mut Context) -> Result<Vec<FileInfo>> {
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let mut items = vec![FileInfo::parent(p.as_path())];
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let root = FileInfo::root(p);
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let childs = root.get_childs()?;
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if cx.editor.config().explorer.is_tree() {
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items.push(root)
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}
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items.extend(childs);
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Ok(items)
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}
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fn render_preview(&mut self, area: Rect, surface: &mut Surface, editor: &Editor) {
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if area.height <= 2 || area.width < 60 {
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return;
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}
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let item = self.tree.current().item();
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if item.file_type == FileType::Placeholder {
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return;
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}
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let head_area = render_block(area.clip_bottom(area.height - 2), surface, Borders::BOTTOM);
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let path_str = format!("{}", item.path.display());
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surface.set_stringn(
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head_area.x,
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head_area.y,
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path_str,
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head_area.width as usize,
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get_theme!(editor.theme, "ui.explorer.dir", "ui.text"),
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);
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let body_area = area.clip_top(2);
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let style = editor.theme.get("ui.text");
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if let Ok(preview_content) = get_preview(&item.path, body_area.height as usize) {
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preview_content
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.into_iter()
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.enumerate()
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.for_each(|(row, line)| {
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surface.set_stringn(
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body_area.x,
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body_area.y + row as u16,
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line,
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body_area.width as usize,
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style,
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);
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})
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}
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}
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fn new_search_prompt(&mut self, search_next: bool) {
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self.tree.save_view();
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self.prompt = Some((
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PromptAction::Search(search_next),
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Prompt::new("search: ".into(), None, ui::completers::none, |_, _, _| {}),
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))
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}
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fn new_filter_prompt(&mut self) {
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self.tree.save_view();
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self.prompt = Some((
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PromptAction::Filter,
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Prompt::new("filter: ".into(), None, ui::completers::none, |_, _, _| {}),
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))
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}
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fn new_mkdir_prompt(&mut self) {
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self.prompt = Some((
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PromptAction::Mkdir,
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Prompt::new("mkdir: ".into(), None, ui::completers::none, |_, _, _| {}),
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));
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}
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fn new_create_file_prompt(&mut self) {
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self.prompt = Some((
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PromptAction::CreateFile,
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Prompt::new(
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"create file: ".into(),
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None,
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ui::completers::none,
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|_, _, _| {},
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),
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));
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}
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fn new_remove_file_prompt(&mut self, cx: &mut Context) {
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let item = self.tree.current_item();
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let check = || {
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ensure!(item.file_type != FileType::Placeholder, "The path is empty");
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ensure!(
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item.file_type != FileType::Parent,
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"can not remove parent dir"
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);
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ensure!(item.path.is_file(), "The path is not a file");
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let doc = cx.editor.document_by_path(&item.path);
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ensure!(doc.is_none(), "The file is opened");
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Ok(())
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};
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if let Err(e) = check() {
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cx.editor.set_error(format!("{e}"));
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return;
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}
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let p = format!("remove file: {}, YES? ", item.path.display());
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self.prompt = Some((
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PromptAction::RemoveFile,
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Prompt::new(p.into(), None, ui::completers::none, |_, _, _| {}),
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));
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}
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fn new_remove_dir_prompt(&mut self, cx: &mut Context) {
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let item = self.tree.current_item();
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let check = || {
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ensure!(item.file_type != FileType::Placeholder, "The path is empty");
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ensure!(
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item.file_type != FileType::Parent,
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"can not remove parent dir"
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);
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ensure!(item.path.is_dir(), "The path is not a dir");
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let doc = cx.editor.documents().find(|doc| {
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doc.path()
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.map(|p| p.starts_with(&item.path))
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.unwrap_or(false)
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});
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ensure!(doc.is_none(), "There are files opened under the dir");
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Ok(())
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};
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if let Err(e) = check() {
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cx.editor.set_error(format!("{e}"));
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return;
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}
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let p = format!("remove dir: {}, YES? ", item.path.display());
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self.prompt = Some((
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PromptAction::RemoveDir,
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Prompt::new(p.into(), None, ui::completers::none, |_, _, _| {}),
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));
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}
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fn toggle_current(
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item: &mut FileInfo,
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cx: &mut Context,
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state: &mut State,
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) -> TreeOp<FileInfo> {
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if item.file_type == FileType::Placeholder {
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return TreeOp::Noop;
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}
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if item.path == Path::new("") {
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return TreeOp::Noop;
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}
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let meta = match std::fs::metadata(&item.path) {
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Ok(meta) => meta,
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Err(e) => {
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cx.editor.set_error(format!("{e}"));
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return TreeOp::Noop;
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}
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};
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if meta.is_file() {
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if let Err(e) = cx.editor.open(&item.path, Action::Replace) {
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cx.editor.set_error(format!("{e}"));
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}
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state.focus = false;
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return TreeOp::Noop;
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}
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if item.path.is_dir() {
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if cx.editor.config().explorer.is_list() || item.file_type == FileType::Parent {
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match Self::get_items(item.path.clone(), cx) {
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Ok(items) => {
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state.current_root = item.path.clone();
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return TreeOp::ReplaceTree(items);
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}
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Err(e) => cx.editor.set_error(format!("{e}")),
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}
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} else {
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return TreeOp::GetChildsAndInsert;
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}
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}
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cx.editor.set_error("unkonw file type");
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TreeOp::Noop
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}
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fn render_float(&mut self, area: Rect, surface: &mut Surface, cx: &mut Context) {
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let background = cx.editor.theme.get("ui.background");
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let column_width = cx.editor.config().explorer.column_width as u16;
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surface.clear_with(area, background);
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let area = render_block(area, surface, Borders::ALL);
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let mut preview_area = area.clip_left(column_width + 1);
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if let Some((_, prompt)) = self.prompt.as_mut() {
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let area = preview_area.clip_bottom(2);
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let promp_area =
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render_block(preview_area.clip_top(area.height), surface, Borders::TOP);
|
||||
prompt.render(promp_area, surface, cx);
|
||||
preview_area = area;
|
||||
}
|
||||
self.render_preview(preview_area, surface, cx.editor);
|
||||
|
||||
let list_area = render_block(area.clip_right(preview_area.width), surface, Borders::RIGHT);
|
||||
self.tree.render(list_area, surface, cx, &mut self.state);
|
||||
}
|
||||
|
||||
fn render_embed(&mut self, area: Rect, surface: &mut Surface, cx: &mut Context) {
|
||||
let config = &cx.editor.config().explorer;
|
||||
let side_area = area
|
||||
.with_width(area.width.min(config.column_width as u16 + 2))
|
||||
.clip_bottom(1);
|
||||
let background = cx.editor.theme.get("ui.background");
|
||||
surface.clear_with(side_area, background);
|
||||
|
||||
let preview_area = area.clip_left(side_area.width).clip_bottom(2);
|
||||
let prompt_area = area.clip_top(side_area.height);
|
||||
|
||||
let list_area =
|
||||
render_block(side_area.clip_left(1), surface, Borders::RIGHT).clip_bottom(1);
|
||||
self.tree.render(list_area, surface, cx, &mut self.state);
|
||||
|
||||
{
|
||||
let statusline = if self.is_focus() {
|
||||
cx.editor.theme.get("ui.statusline")
|
||||
} else {
|
||||
cx.editor.theme.get("ui.statusline.inactive")
|
||||
};
|
||||
let area = side_area.clip_top(list_area.height).clip_right(1);
|
||||
surface.clear_with(area, statusline);
|
||||
// surface.set_string_truncated(
|
||||
// area.x,
|
||||
// area.y,
|
||||
// &self.path_state.root.to_string_lossy(),
|
||||
// area.width as usize,
|
||||
// |_| statusline,
|
||||
// true,
|
||||
// true,
|
||||
// );
|
||||
}
|
||||
|
||||
if self.is_focus() {
|
||||
if preview_area.width < 30 || preview_area.height < 3 {
|
||||
return;
|
||||
}
|
||||
let width = preview_area.width.min(90);
|
||||
let mut y = self.tree.row().saturating_sub(1) as u16;
|
||||
let height = (preview_area.height).min(25);
|
||||
if (height + y) > preview_area.height {
|
||||
y = preview_area.height - height;
|
||||
}
|
||||
let area = Rect::new(preview_area.x, y, width, height);
|
||||
surface.clear_with(area, background);
|
||||
let area = render_block(area, surface, Borders::all());
|
||||
self.render_preview(area, surface, cx.editor);
|
||||
}
|
||||
|
||||
if let Some((_, prompt)) = self.prompt.as_mut() {
|
||||
prompt.render_prompt(prompt_area, surface, cx)
|
||||
}
|
||||
}
|
||||
|
||||
fn handle_filter_event(&mut self, event: KeyEvent, cx: &mut Context) -> EventResult {
|
||||
let (action, mut prompt) = self.prompt.take().unwrap();
|
||||
match event.into() {
|
||||
key!(Tab) | key!(Down) | ctrl!('j') => {
|
||||
self.tree.clean_recycle();
|
||||
return self
|
||||
.tree
|
||||
.handle_event(Event::Key(event), cx, &mut self.state);
|
||||
}
|
||||
key!(Enter) => {
|
||||
self.tree.clean_recycle();
|
||||
return self
|
||||
.tree
|
||||
.handle_event(Event::Key(event), cx, &mut self.state);
|
||||
}
|
||||
key!(Esc) | ctrl!('c') => self.tree.restore_recycle(),
|
||||
_ => {
|
||||
if let EventResult::Consumed(_) = prompt.handle_event(Event::Key(event), cx) {
|
||||
self.tree.filter(prompt.line(), cx, &mut self.state);
|
||||
}
|
||||
self.prompt = Some((action, prompt));
|
||||
}
|
||||
};
|
||||
EventResult::Consumed(None)
|
||||
}
|
||||
|
||||
fn handle_search_event(&mut self, event: KeyEvent, cx: &mut Context) -> EventResult {
|
||||
let (action, mut prompt) = self.prompt.take().unwrap();
|
||||
let search_next = match action {
|
||||
PromptAction::Search(search_next) => search_next,
|
||||
_ => return EventResult::Ignored(None),
|
||||
};
|
||||
match event.into() {
|
||||
key!(Tab) | key!(Down) | ctrl!('j') => {
|
||||
return self
|
||||
.tree
|
||||
.handle_event(Event::Key(event), cx, &mut self.state)
|
||||
}
|
||||
key!(Enter) => {
|
||||
let search_str = prompt.line().clone();
|
||||
if !search_str.is_empty() {
|
||||
self.repeat_motion = Some(Box::new(move |explorer, action, cx| {
|
||||
if let PromptAction::Search(is_next) = action {
|
||||
explorer.tree.save_view();
|
||||
if is_next == search_next {
|
||||
explorer
|
||||
.tree
|
||||
.search_next(cx, &search_str, &mut explorer.state);
|
||||
} else {
|
||||
explorer
|
||||
.tree
|
||||
.search_pre(cx, &search_str, &mut explorer.state);
|
||||
}
|
||||
}
|
||||
}))
|
||||
} else {
|
||||
self.repeat_motion = None;
|
||||
}
|
||||
// return self
|
||||
// .tree
|
||||
// .handle_event(Event::Key(event), cx, &mut self.state);
|
||||
}
|
||||
key!(Esc) | ctrl!('c') => self.tree.restore_view(),
|
||||
_ => {
|
||||
if let EventResult::Consumed(_) = prompt.handle_event(Event::Key(event), cx) {
|
||||
if search_next {
|
||||
self.tree.search_next(cx, prompt.line(), &mut self.state);
|
||||
} else {
|
||||
self.tree.search_pre(cx, prompt.line(), &mut self.state);
|
||||
}
|
||||
}
|
||||
self.prompt = Some((action, prompt));
|
||||
}
|
||||
};
|
||||
EventResult::Consumed(None)
|
||||
}
|
||||
|
||||
fn handle_prompt_event(&mut self, event: KeyEvent, cx: &mut Context) -> EventResult {
|
||||
match &self.prompt {
|
||||
Some((PromptAction::Search(_), _)) => return self.handle_search_event(event, cx),
|
||||
Some((PromptAction::Filter, _)) => return self.handle_filter_event(event, cx),
|
||||
_ => {}
|
||||
};
|
||||
let (action, mut prompt) = match self.prompt.take() {
|
||||
Some((action, p)) => (action, p),
|
||||
_ => return EventResult::Ignored(None),
|
||||
};
|
||||
let line = prompt.line();
|
||||
match (action, event.into()) {
|
||||
(PromptAction::Mkdir, key!(Enter)) => {
|
||||
if let Err(e) = self.new_path(line, true) {
|
||||
cx.editor.set_error(format!("{e}"))
|
||||
}
|
||||
}
|
||||
(PromptAction::CreateFile, key!(Enter)) => {
|
||||
if let Err(e) = self.new_path(line, false) {
|
||||
cx.editor.set_error(format!("{e}"))
|
||||
}
|
||||
}
|
||||
(PromptAction::RemoveDir, key!(Enter)) => {
|
||||
let item = self.tree.current_item();
|
||||
if let Err(e) = std::fs::remove_dir_all(&item.path) {
|
||||
cx.editor.set_error(format!("{e}"));
|
||||
} else {
|
||||
self.tree.fold_current_child();
|
||||
self.tree.remove_current();
|
||||
}
|
||||
}
|
||||
(PromptAction::RemoveFile, key!(Enter)) => {
|
||||
if line == "YES" {
|
||||
let item = self.tree.current_item();
|
||||
if let Err(e) = std::fs::remove_file(&item.path) {
|
||||
cx.editor.set_error(format!("{e}"));
|
||||
} else {
|
||||
self.tree.remove_current();
|
||||
}
|
||||
}
|
||||
}
|
||||
(_, key!(Esc) | ctrl!('c')) => {}
|
||||
_ => {
|
||||
prompt.handle_event(Event::Key(event), cx);
|
||||
self.prompt = Some((action, prompt));
|
||||
}
|
||||
}
|
||||
EventResult::Consumed(None)
|
||||
}
|
||||
|
||||
fn new_path(&mut self, file_name: &str, is_dir: bool) -> Result<()> {
|
||||
let current = self.tree.current_item();
|
||||
let current_parent = if current.file_type == FileType::Placeholder {
|
||||
¤t.path
|
||||
} else {
|
||||
current
|
||||
.path
|
||||
.parent()
|
||||
.ok_or_else(|| anyhow::anyhow!("can not get parent dir"))?
|
||||
};
|
||||
let p = helix_core::path::get_normalized_path(¤t_parent.join(file_name));
|
||||
match p.parent() {
|
||||
Some(p) if p == current_parent => {}
|
||||
_ => bail!("The file name is not illegal"),
|
||||
};
|
||||
|
||||
let f = if is_dir {
|
||||
std::fs::create_dir(&p)?;
|
||||
FileInfo::new(p, FileType::Dir)
|
||||
} else {
|
||||
let mut fd = std::fs::OpenOptions::new();
|
||||
fd.create_new(true).write(true).open(&p)?;
|
||||
FileInfo::new(p, FileType::File)
|
||||
};
|
||||
if current.file_type == FileType::Placeholder {
|
||||
self.tree.replace_current(f);
|
||||
} else {
|
||||
self.tree.insert_current_level(f);
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl Component for Explorer {
|
||||
/// Process input events, return true if handled.
|
||||
fn handle_event(&mut self, event: Event, cx: &mut Context) -> EventResult {
|
||||
let key_event = match event {
|
||||
Event::Key(event) => event,
|
||||
Event::Resize(..) => return EventResult::Consumed(None),
|
||||
_ => return EventResult::Ignored(None),
|
||||
};
|
||||
if !self.is_focus() {
|
||||
return EventResult::Ignored(None);
|
||||
}
|
||||
if let Some(mut on_next_key) = self.on_next_key.take() {
|
||||
return on_next_key(cx, self, key_event);
|
||||
}
|
||||
|
||||
if let EventResult::Consumed(c) = self.handle_prompt_event(key_event, cx) {
|
||||
return EventResult::Consumed(c);
|
||||
}
|
||||
|
||||
let close_fn = EventResult::Consumed(Some(Box::new(|compositor: &mut Compositor, _| {
|
||||
if let Some(editor) = compositor.find::<ui::EditorView>() {
|
||||
editor.explorer = None;
|
||||
}
|
||||
})));
|
||||
|
||||
match key_event.into() {
|
||||
key!(Esc) => self.unfocus(),
|
||||
ctrl!('c') => return close_fn,
|
||||
key!('n') => {
|
||||
if let Some(mut repeat_motion) = self.repeat_motion.take() {
|
||||
repeat_motion(self, PromptAction::Search(true), cx);
|
||||
self.repeat_motion = Some(repeat_motion);
|
||||
}
|
||||
}
|
||||
shift!('N') => {
|
||||
if let Some(mut repeat_motion) = self.repeat_motion.take() {
|
||||
repeat_motion(self, PromptAction::Search(false), cx);
|
||||
self.repeat_motion = Some(repeat_motion);
|
||||
}
|
||||
}
|
||||
key!('b') => {
|
||||
if let Some(p) = self.state.current_root.parent() {
|
||||
match Self::get_items(p.to_path_buf(), cx) {
|
||||
Ok(items) => {
|
||||
self.state.current_root = p.to_path_buf();
|
||||
self.tree = Tree::build_tree(items).with_enter_fn(Self::toggle_current);
|
||||
}
|
||||
Err(e) => cx.editor.set_error(format!("{e}")),
|
||||
}
|
||||
}
|
||||
}
|
||||
key!('f') => self.new_filter_prompt(),
|
||||
key!('/') => self.new_search_prompt(true),
|
||||
key!('?') => self.new_search_prompt(false),
|
||||
key!('m') => {
|
||||
self.on_next_key = Some(Box::new(|_, explorer, event| {
|
||||
match event.into() {
|
||||
key!('d') => explorer.new_mkdir_prompt(),
|
||||
key!('f') => explorer.new_create_file_prompt(),
|
||||
_ => return EventResult::Ignored(None),
|
||||
};
|
||||
EventResult::Consumed(None)
|
||||
}));
|
||||
}
|
||||
key!('r') => {
|
||||
self.on_next_key = Some(Box::new(|cx, explorer, event| {
|
||||
match event.into() {
|
||||
key!('d') => explorer.new_remove_dir_prompt(cx),
|
||||
key!('f') => explorer.new_remove_file_prompt(cx),
|
||||
_ => return EventResult::Ignored(None),
|
||||
};
|
||||
EventResult::Consumed(None)
|
||||
}));
|
||||
}
|
||||
_ => {
|
||||
self.tree
|
||||
.handle_event(Event::Key(key_event), cx, &mut self.state);
|
||||
}
|
||||
}
|
||||
|
||||
EventResult::Consumed(None)
|
||||
}
|
||||
|
||||
fn render(&mut self, area: Rect, surface: &mut Surface, cx: &mut Context) {
|
||||
if area.width < 10 || area.height < 5 {
|
||||
cx.editor.set_error("explorer render area is too small");
|
||||
return;
|
||||
}
|
||||
let config = &cx.editor.config().explorer;
|
||||
if config.is_embed() {
|
||||
self.render_embed(area, surface, cx);
|
||||
} else {
|
||||
self.render_float(area, surface, cx);
|
||||
}
|
||||
}
|
||||
|
||||
fn cursor(&self, area: Rect, editor: &Editor) -> (Option<Position>, CursorKind) {
|
||||
let prompt = match self.prompt.as_ref() {
|
||||
Some((_, prompt)) => prompt,
|
||||
None => return (None, CursorKind::Hidden),
|
||||
};
|
||||
let config = &editor.config().explorer;
|
||||
let (x, y) = if config.is_overlay() {
|
||||
let colw = config.column_width as u16;
|
||||
if area.width > colw {
|
||||
(area.x + colw + 2, area.y + area.height - 2)
|
||||
} else {
|
||||
return (None, CursorKind::Hidden);
|
||||
}
|
||||
} else {
|
||||
(area.x, area.y + area.height - 1)
|
||||
};
|
||||
prompt.cursor(Rect::new(x, y, area.width, 1), editor)
|
||||
}
|
||||
}
|
||||
|
||||
fn get_preview(p: impl AsRef<Path>, max_line: usize) -> Result<Vec<String>> {
|
||||
let p = p.as_ref();
|
||||
if p.is_dir() {
|
||||
return Ok(p
|
||||
.read_dir()?
|
||||
.filter_map(|entry| entry.ok())
|
||||
.take(max_line)
|
||||
.map(|entry| {
|
||||
if entry.file_type().map(|ft| ft.is_dir()).unwrap_or(false) {
|
||||
format!("{}/", entry.file_name().to_string_lossy())
|
||||
} else {
|
||||
format!("{}", entry.file_name().to_string_lossy())
|
||||
}
|
||||
})
|
||||
.collect());
|
||||
}
|
||||
|
||||
ensure!(p.is_file(), "path: {} is not file or dir", p.display());
|
||||
use std::fs::OpenOptions;
|
||||
use std::io::BufRead;
|
||||
let mut fd = OpenOptions::new();
|
||||
fd.read(true);
|
||||
let fd = fd.open(p)?;
|
||||
Ok(std::io::BufReader::new(fd)
|
||||
.lines()
|
||||
.take(max_line)
|
||||
.filter_map(|line| line.ok())
|
||||
.map(|line| line.replace('\t', " "))
|
||||
.collect())
|
||||
}
|
||||
|
||||
fn render_block(area: Rect, surface: &mut Surface, borders: Borders) -> Rect {
|
||||
let block = Block::default().borders(borders);
|
||||
let inner = block.inner(area);
|
||||
block.render(area, surface);
|
||||
inner
|
||||
}
|
||||
@ -0,0 +1,682 @@
|
||||
use std::cmp::Ordering;
|
||||
use std::iter::Peekable;
|
||||
|
||||
use anyhow::Result;
|
||||
|
||||
use crate::{
|
||||
compositor::{Context, EventResult},
|
||||
ctrl, key, shift,
|
||||
};
|
||||
use helix_core::unicode::width::UnicodeWidthStr;
|
||||
use helix_view::{
|
||||
graphics::Rect,
|
||||
input::{Event, KeyEvent},
|
||||
};
|
||||
use tui::{buffer::Buffer as Surface, text::Spans};
|
||||
|
||||
pub trait TreeItem: Sized {
|
||||
type Params;
|
||||
|
||||
fn text(&self, cx: &mut Context, selected: bool, params: &mut Self::Params) -> Spans;
|
||||
fn is_child(&self, other: &Self) -> bool;
|
||||
fn cmp(&self, other: &Self) -> Ordering;
|
||||
|
||||
fn filter(&self, cx: &mut Context, s: &str, params: &mut Self::Params) -> bool {
|
||||
self.text(cx, false, params)
|
||||
.0
|
||||
.into_iter()
|
||||
.map(|s| s.content)
|
||||
.collect::<Vec<_>>()
|
||||
.concat()
|
||||
.contains(s)
|
||||
}
|
||||
|
||||
fn get_childs(&self) -> Result<Vec<Self>> {
|
||||
Ok(vec![])
|
||||
}
|
||||
}
|
||||
|
||||
fn tree_item_cmp<T: TreeItem>(item1: &T, item2: &T) -> Ordering {
|
||||
if item1.is_child(item2) {
|
||||
return Ordering::Greater;
|
||||
}
|
||||
if item2.is_child(item1) {
|
||||
return Ordering::Less;
|
||||
}
|
||||
|
||||
T::cmp(item1, item2)
|
||||
}
|
||||
|
||||
fn vec_to_tree<T: TreeItem>(mut items: Vec<T>, level: usize) -> Vec<Elem<T>> {
|
||||
fn get_childs<T, Iter>(iter: &mut Peekable<Iter>, elem: &mut Elem<T>)
|
||||
where
|
||||
T: TreeItem,
|
||||
Iter: Iterator<Item = T>,
|
||||
{
|
||||
let level = elem.level + 1;
|
||||
loop {
|
||||
if !iter.peek().map_or(false, |next| next.is_child(&elem.item)) {
|
||||
break;
|
||||
}
|
||||
let mut child = Elem::new(iter.next().unwrap(), level);
|
||||
if iter.peek().map_or(false, |nc| nc.is_child(&child.item)) {
|
||||
get_childs(iter, &mut child);
|
||||
}
|
||||
elem.folded.push(child);
|
||||
}
|
||||
}
|
||||
|
||||
items.sort_by(tree_item_cmp);
|
||||
let mut elems = Vec::with_capacity(items.len());
|
||||
let mut iter = items.into_iter().peekable();
|
||||
while let Some(item) = iter.next() {
|
||||
let mut elem = Elem::new(item, level);
|
||||
if iter.peek().map_or(false, |next| next.is_child(&elem.item)) {
|
||||
get_childs(&mut iter, &mut elem);
|
||||
}
|
||||
expand_elems(&mut elems, elem);
|
||||
}
|
||||
elems
|
||||
}
|
||||
|
||||
// return total elems's count contain self
|
||||
fn get_elems_recursion<T: TreeItem>(t: &mut Elem<T>, depth: usize) -> Result<usize> {
|
||||
let mut childs = t.item.get_childs()?;
|
||||
childs.sort_by(tree_item_cmp);
|
||||
let mut elems = Vec::with_capacity(childs.len());
|
||||
let level = t.level + 1;
|
||||
let mut total = 1;
|
||||
for child in childs {
|
||||
let mut elem = Elem::new(child, level);
|
||||
let count = if depth > 0 {
|
||||
get_elems_recursion(&mut elem, depth - 1)?
|
||||
} else {
|
||||
1
|
||||
};
|
||||
elems.push(elem);
|
||||
total += count;
|
||||
}
|
||||
t.folded = elems;
|
||||
Ok(total)
|
||||
}
|
||||
|
||||
fn expand_elems<T: TreeItem>(dist: &mut Vec<Elem<T>>, mut t: Elem<T>) {
|
||||
let childs = std::mem::take(&mut t.folded);
|
||||
dist.push(t);
|
||||
for child in childs {
|
||||
expand_elems(dist, child)
|
||||
}
|
||||
}
|
||||
|
||||
pub enum TreeOp<T> {
|
||||
Noop,
|
||||
Restore,
|
||||
InsertChild(Vec<T>),
|
||||
GetChildsAndInsert,
|
||||
ReplaceTree(Vec<T>),
|
||||
}
|
||||
|
||||
pub struct Elem<T> {
|
||||
item: T,
|
||||
level: usize,
|
||||
folded: Vec<Self>,
|
||||
}
|
||||
|
||||
impl<T: Clone> Clone for Elem<T> {
|
||||
fn clone(&self) -> Self {
|
||||
Self {
|
||||
item: self.item.clone(),
|
||||
level: self.level,
|
||||
folded: self.folded.clone(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> Elem<T> {
|
||||
pub fn new(item: T, level: usize) -> Self {
|
||||
Self {
|
||||
item,
|
||||
level,
|
||||
folded: vec![],
|
||||
}
|
||||
}
|
||||
|
||||
pub fn item(&self) -> &T {
|
||||
&self.item
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Tree<T: TreeItem> {
|
||||
items: Vec<Elem<T>>,
|
||||
recycle: Option<(String, Vec<Elem<T>>)>,
|
||||
selected: usize, // select item index
|
||||
save_view: (usize, usize), // (selected, row)
|
||||
winline: usize, // view row
|
||||
col: usize,
|
||||
max_len: usize,
|
||||
count: usize,
|
||||
tree_symbol_style: String,
|
||||
#[allow(clippy::type_complexity)]
|
||||
pre_render: Option<Box<dyn Fn(&mut Self, Rect) + 'static>>,
|
||||
#[allow(clippy::type_complexity)]
|
||||
on_opened_fn:
|
||||
Option<Box<dyn FnMut(&mut T, &mut Context, &mut T::Params) -> TreeOp<T> + 'static>>,
|
||||
#[allow(clippy::type_complexity)]
|
||||
on_folded_fn: Option<Box<dyn FnMut(&mut T, &mut Context, &mut T::Params) + 'static>>,
|
||||
#[allow(clippy::type_complexity)]
|
||||
on_next_key: Option<Box<dyn FnMut(&mut Context, &mut Self, KeyEvent)>>,
|
||||
}
|
||||
|
||||
impl<T: TreeItem> Tree<T> {
|
||||
pub fn new(items: Vec<Elem<T>>) -> Self {
|
||||
Self {
|
||||
items,
|
||||
recycle: None,
|
||||
selected: 0,
|
||||
save_view: (0, 0),
|
||||
winline: 0,
|
||||
col: 0,
|
||||
max_len: 0,
|
||||
count: 0,
|
||||
tree_symbol_style: "ui.text".into(),
|
||||
pre_render: None,
|
||||
on_opened_fn: None,
|
||||
on_folded_fn: None,
|
||||
on_next_key: None,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn replace_with_new_items(&mut self, items: Vec<T>) {
|
||||
let old = std::mem::replace(self, Self::new(vec_to_tree(items, 0)));
|
||||
self.on_opened_fn = old.on_opened_fn;
|
||||
self.on_folded_fn = old.on_folded_fn;
|
||||
self.tree_symbol_style = old.tree_symbol_style;
|
||||
}
|
||||
|
||||
pub fn build_tree(items: Vec<T>) -> Self {
|
||||
Self::new(vec_to_tree(items, 0))
|
||||
}
|
||||
|
||||
pub fn build_from_root(t: T, depth: usize) -> Result<Self> {
|
||||
let mut elem = Elem::new(t, 0);
|
||||
let count = get_elems_recursion(&mut elem, depth)?;
|
||||
let mut elems = Vec::with_capacity(count);
|
||||
expand_elems(&mut elems, elem);
|
||||
Ok(Self::new(elems))
|
||||
}
|
||||
|
||||
pub fn with_enter_fn<F>(mut self, f: F) -> Self
|
||||
where
|
||||
F: FnMut(&mut T, &mut Context, &mut T::Params) -> TreeOp<T> + 'static,
|
||||
{
|
||||
self.on_opened_fn = Some(Box::new(f));
|
||||
self
|
||||
}
|
||||
|
||||
pub fn with_folded_fn<F>(mut self, f: F) -> Self
|
||||
where
|
||||
F: FnMut(&mut T, &mut Context, &mut T::Params) + 'static,
|
||||
{
|
||||
self.on_folded_fn = Some(Box::new(f));
|
||||
self
|
||||
}
|
||||
|
||||
pub fn tree_symbol_style(mut self, style: String) -> Self {
|
||||
self.tree_symbol_style = style;
|
||||
self
|
||||
}
|
||||
|
||||
fn next_item(&self) -> Option<&Elem<T>> {
|
||||
self.items.get(self.selected + 1)
|
||||
}
|
||||
|
||||
fn next_not_descendant_pos(&self, index: usize) -> usize {
|
||||
let item = &self.items[index];
|
||||
self.find(index + 1, false, |n| n.level <= item.level)
|
||||
.unwrap_or(self.items.len())
|
||||
}
|
||||
|
||||
fn find_parent(&self, index: usize) -> Option<usize> {
|
||||
let item = &self.items[index];
|
||||
self.find(index, true, |p| p.level < item.level)
|
||||
}
|
||||
|
||||
// rev start: start - 1
|
||||
fn find<F>(&self, start: usize, rev: bool, f: F) -> Option<usize>
|
||||
where
|
||||
F: FnMut(&Elem<T>) -> bool,
|
||||
{
|
||||
let iter = self.items.iter();
|
||||
if rev {
|
||||
iter.take(start).rposition(f)
|
||||
} else {
|
||||
iter.skip(start).position(f).map(|p| p + start)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: TreeItem> Tree<T> {
|
||||
pub fn on_enter(&mut self, cx: &mut Context, params: &mut T::Params) {
|
||||
if self.items.is_empty() {
|
||||
return;
|
||||
}
|
||||
if let Some(next_level) = self.next_item().map(|elem| elem.level) {
|
||||
let current = &mut self.items[self.selected];
|
||||
let current_level = current.level;
|
||||
if next_level > current_level {
|
||||
if let Some(mut on_folded_fn) = self.on_folded_fn.take() {
|
||||
on_folded_fn(&mut current.item, cx, params);
|
||||
self.on_folded_fn = Some(on_folded_fn);
|
||||
}
|
||||
self.fold_current_child();
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
if let Some(mut on_open_fn) = self.on_opened_fn.take() {
|
||||
let mut f = || {
|
||||
let current = &mut self.items[self.selected];
|
||||
let items = match on_open_fn(&mut current.item, cx, params) {
|
||||
TreeOp::Restore => {
|
||||
let inserts = std::mem::take(&mut current.folded);
|
||||
let _: Vec<_> = self
|
||||
.items
|
||||
.splice(self.selected + 1..self.selected + 1, inserts)
|
||||
.collect();
|
||||
return;
|
||||
}
|
||||
TreeOp::InsertChild(items) => items,
|
||||
TreeOp::GetChildsAndInsert => match current.item.get_childs() {
|
||||
Ok(items) => items,
|
||||
Err(e) => return cx.editor.set_error(format!("{e}")),
|
||||
},
|
||||
TreeOp::ReplaceTree(items) => return self.replace_with_new_items(items),
|
||||
TreeOp::Noop => return,
|
||||
};
|
||||
current.folded = vec![];
|
||||
let inserts = vec_to_tree(items, current.level + 1);
|
||||
let _: Vec<_> = self
|
||||
.items
|
||||
.splice(self.selected + 1..self.selected + 1, inserts)
|
||||
.collect();
|
||||
};
|
||||
f();
|
||||
self.on_opened_fn = Some(on_open_fn)
|
||||
} else {
|
||||
let current = &mut self.items[self.selected];
|
||||
let inserts = std::mem::take(&mut current.folded);
|
||||
let _: Vec<_> = self
|
||||
.items
|
||||
.splice(self.selected + 1..self.selected + 1, inserts)
|
||||
.collect();
|
||||
}
|
||||
}
|
||||
|
||||
pub fn fold_current_level(&mut self) {
|
||||
let start = match self.find_parent(self.selected) {
|
||||
Some(start) => start,
|
||||
None => return,
|
||||
};
|
||||
self.selected = start;
|
||||
self.fold_current_child();
|
||||
}
|
||||
|
||||
pub fn fold_current_child(&mut self) {
|
||||
if self.selected + 1 >= self.items.len() {
|
||||
return;
|
||||
}
|
||||
let pos = self.next_not_descendant_pos(self.selected);
|
||||
if self.selected < pos {
|
||||
self.items[self.selected].folded = self.items.drain(self.selected + 1..pos).collect();
|
||||
}
|
||||
}
|
||||
|
||||
pub fn search_next(&mut self, cx: &mut Context, s: &str, params: &mut T::Params) {
|
||||
let skip = std::cmp::max(2, self.save_view.0 + 1);
|
||||
self.selected = self
|
||||
.find(skip, false, |e| e.item.filter(cx, s, params))
|
||||
.unwrap_or(self.save_view.0);
|
||||
|
||||
self.winline = (self.save_view.1 + self.selected).saturating_sub(self.save_view.0);
|
||||
}
|
||||
|
||||
pub fn search_pre(&mut self, cx: &mut Context, s: &str, params: &mut T::Params) {
|
||||
let take = self.save_view.0;
|
||||
self.selected = self
|
||||
.find(take, true, |e| e.item.filter(cx, s, params))
|
||||
.unwrap_or(self.save_view.0);
|
||||
|
||||
self.winline = (self.save_view.1 + self.selected).saturating_sub(self.save_view.0);
|
||||
}
|
||||
|
||||
pub fn move_down(&mut self, rows: usize) {
|
||||
let len = self.items.len();
|
||||
if len > 0 {
|
||||
self.selected = std::cmp::min(self.selected + rows, len.saturating_sub(1));
|
||||
self.winline = std::cmp::min(self.selected, self.winline + rows);
|
||||
}
|
||||
}
|
||||
|
||||
pub fn move_up(&mut self, rows: usize) {
|
||||
let len = self.items.len();
|
||||
if len > 0 {
|
||||
self.selected = self.selected.saturating_sub(rows);
|
||||
self.winline = std::cmp::min(self.selected, self.winline.saturating_sub(rows));
|
||||
}
|
||||
}
|
||||
|
||||
pub fn move_left(&mut self, cols: usize) {
|
||||
self.col = self.col.saturating_sub(cols);
|
||||
}
|
||||
|
||||
pub fn move_right(&mut self, cols: usize) {
|
||||
self.pre_render = Some(Box::new(move |tree: &mut Self, area: Rect| {
|
||||
let max_scroll = tree.max_len.saturating_sub(area.width as usize);
|
||||
tree.col = max_scroll.min(tree.col + cols);
|
||||
}));
|
||||
}
|
||||
|
||||
pub fn move_down_half_page(&mut self) {
|
||||
self.pre_render = Some(Box::new(|tree: &mut Self, area: Rect| {
|
||||
tree.move_down((area.height / 2) as usize);
|
||||
}));
|
||||
}
|
||||
|
||||
pub fn move_up_half_page(&mut self) {
|
||||
self.pre_render = Some(Box::new(|tree: &mut Self, area: Rect| {
|
||||
tree.move_up((area.height / 2) as usize);
|
||||
}));
|
||||
}
|
||||
|
||||
pub fn move_down_page(&mut self) {
|
||||
self.pre_render = Some(Box::new(|tree: &mut Self, area: Rect| {
|
||||
tree.move_down((area.height) as usize);
|
||||
}));
|
||||
}
|
||||
|
||||
pub fn move_up_page(&mut self) {
|
||||
self.pre_render = Some(Box::new(|tree: &mut Self, area: Rect| {
|
||||
tree.move_up((area.height) as usize);
|
||||
}));
|
||||
}
|
||||
|
||||
pub fn save_view(&mut self) {
|
||||
self.save_view = (self.selected, self.winline);
|
||||
}
|
||||
|
||||
pub fn restore_view(&mut self) {
|
||||
(self.selected, self.winline) = self.save_view;
|
||||
}
|
||||
|
||||
pub fn current(&self) -> &Elem<T> {
|
||||
&self.items[self.selected]
|
||||
}
|
||||
|
||||
pub fn current_item(&self) -> &T {
|
||||
&self.items[self.selected].item
|
||||
}
|
||||
|
||||
pub fn row(&self) -> usize {
|
||||
self.winline
|
||||
}
|
||||
|
||||
pub fn remove_current(&mut self) -> T {
|
||||
let elem = self.items.remove(self.selected);
|
||||
self.selected = self.selected.saturating_sub(1);
|
||||
elem.item
|
||||
}
|
||||
|
||||
pub fn replace_current(&mut self, item: T) {
|
||||
self.items[self.selected].item = item;
|
||||
}
|
||||
|
||||
pub fn insert_current_level(&mut self, item: T) {
|
||||
let current = self.current();
|
||||
let level = current.level;
|
||||
let pos = match current.item.cmp(&item) {
|
||||
Ordering::Less => self
|
||||
.find(self.selected + 1, false, |e| {
|
||||
e.level < level || (e.level == level && e.item.cmp(&item) != Ordering::Less)
|
||||
})
|
||||
.unwrap_or(self.items.len()),
|
||||
|
||||
Ordering::Greater => {
|
||||
match self.find(self.selected, true, |elem| {
|
||||
elem.level < level
|
||||
|| (elem.level == level && elem.item.cmp(&item) != Ordering::Greater)
|
||||
}) {
|
||||
Some(p) if self.items[p].level == level => self.next_not_descendant_pos(p),
|
||||
Some(p) => p + 1,
|
||||
None => 0,
|
||||
}
|
||||
}
|
||||
Ordering::Equal => self.selected + 1,
|
||||
};
|
||||
self.items.insert(pos, Elem::new(item, level));
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: TreeItem> Tree<T> {
|
||||
pub fn render(
|
||||
&mut self,
|
||||
area: Rect,
|
||||
surface: &mut Surface,
|
||||
cx: &mut Context,
|
||||
params: &mut T::Params,
|
||||
) {
|
||||
if let Some(pre_render) = self.pre_render.take() {
|
||||
pre_render(self, area);
|
||||
}
|
||||
|
||||
self.max_len = 0;
|
||||
self.winline = std::cmp::min(self.winline, area.height.saturating_sub(1) as usize);
|
||||
let style = cx.editor.theme.get(&self.tree_symbol_style);
|
||||
let last_item_index = self.items.len().saturating_sub(1);
|
||||
let skip = self.selected.saturating_sub(self.winline);
|
||||
let iter = self
|
||||
.items
|
||||
.iter()
|
||||
.skip(skip)
|
||||
.take(area.height as usize)
|
||||
.enumerate();
|
||||
for (index, elem) in iter {
|
||||
let row = index as u16;
|
||||
let mut area = Rect::new(area.x, area.y + row, area.width, 1);
|
||||
let indent = if elem.level > 0 {
|
||||
if index + skip != last_item_index {
|
||||
format!("{}├─", "│ ".repeat(elem.level - 1))
|
||||
} else {
|
||||
format!("└─{}", "┴─".repeat(elem.level - 1))
|
||||
}
|
||||
} else {
|
||||
"".to_string()
|
||||
};
|
||||
|
||||
let indent_len = indent.chars().count();
|
||||
if indent_len > self.col {
|
||||
let indent: String = indent.chars().skip(self.col).collect();
|
||||
if !indent.is_empty() {
|
||||
surface.set_stringn(area.x, area.y, &indent, area.width as usize, style);
|
||||
area = area.clip_left(indent.width() as u16);
|
||||
}
|
||||
};
|
||||
let mut start_index = self.col.saturating_sub(indent_len);
|
||||
let mut text = elem.item.text(cx, skip + index == self.selected, params);
|
||||
self.max_len = self.max_len.max(text.width() + indent.len());
|
||||
for span in text.0.iter_mut() {
|
||||
if area.width == 0 {
|
||||
return;
|
||||
}
|
||||
if start_index == 0 {
|
||||
surface.set_span(area.x, area.y, span, area.width);
|
||||
area = area.clip_left(span.width() as u16);
|
||||
} else {
|
||||
let span_width = span.width();
|
||||
if start_index > span_width {
|
||||
start_index -= span_width;
|
||||
} else {
|
||||
let content: String = span
|
||||
.content
|
||||
.chars()
|
||||
.filter(|c| {
|
||||
if start_index > 0 {
|
||||
start_index = start_index.saturating_sub(c.to_string().width());
|
||||
false
|
||||
} else {
|
||||
true
|
||||
}
|
||||
})
|
||||
.collect();
|
||||
surface.set_string_truncated(
|
||||
area.x,
|
||||
area.y,
|
||||
&content,
|
||||
area.width as usize,
|
||||
|_| span.style,
|
||||
false,
|
||||
false,
|
||||
);
|
||||
start_index = 0
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub fn handle_event(
|
||||
&mut self,
|
||||
event: Event,
|
||||
cx: &mut Context,
|
||||
params: &mut T::Params,
|
||||
) -> EventResult {
|
||||
let key_event = match event {
|
||||
Event::Key(event) => event,
|
||||
Event::Resize(..) => return EventResult::Consumed(None),
|
||||
_ => return EventResult::Ignored(None),
|
||||
};
|
||||
if let Some(mut on_next_key) = self.on_next_key.take() {
|
||||
on_next_key(cx, self, key_event);
|
||||
return EventResult::Consumed(None);
|
||||
}
|
||||
let count = std::mem::replace(&mut self.count, 0);
|
||||
match key_event.into() {
|
||||
key!(i @ '0'..='9') => self.count = i.to_digit(10).unwrap() as usize + count * 10,
|
||||
key!('k') | shift!(Tab) | key!(Up) | ctrl!('k') => self.move_up(1.max(count)),
|
||||
key!('j') | key!(Tab) | key!(Down) | ctrl!('j') => self.move_down(1.max(count)),
|
||||
key!('z') => self.fold_current_level(),
|
||||
key!('h') => self.move_left(1.max(count)),
|
||||
key!('l') => self.move_right(1.max(count)),
|
||||
shift!('G') => self.move_down(usize::MAX / 2),
|
||||
key!(Enter) => self.on_enter(cx, params),
|
||||
ctrl!('d') => self.move_down_half_page(),
|
||||
ctrl!('u') => self.move_up_half_page(),
|
||||
shift!('D') => self.move_down_page(),
|
||||
shift!('U') => self.move_up_page(),
|
||||
key!('g') => {
|
||||
self.on_next_key = Some(Box::new(|_, tree, event| match event.into() {
|
||||
key!('g') => tree.move_up(usize::MAX / 2),
|
||||
key!('e') => tree.move_down(usize::MAX / 2),
|
||||
_ => {}
|
||||
}));
|
||||
}
|
||||
_ => return EventResult::Ignored(None),
|
||||
}
|
||||
|
||||
EventResult::Consumed(None)
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: TreeItem + Clone> Tree<T> {
|
||||
pub fn filter(&mut self, s: &str, cx: &mut Context, params: &mut T::Params) {
|
||||
fn filter_recursion<T>(
|
||||
elems: &Vec<Elem<T>>,
|
||||
mut index: usize,
|
||||
s: &str,
|
||||
cx: &mut Context,
|
||||
params: &mut T::Params,
|
||||
) -> (Vec<Elem<T>>, usize)
|
||||
where
|
||||
T: TreeItem + Clone,
|
||||
{
|
||||
let mut retain = vec![];
|
||||
let elem = &elems[index];
|
||||
loop {
|
||||
let child = match elems.get(index + 1) {
|
||||
Some(child) if child.item.is_child(&elem.item) => child,
|
||||
_ => break,
|
||||
};
|
||||
index += 1;
|
||||
let next = elems.get(index + 1);
|
||||
if next.map_or(false, |n| n.item.is_child(&child.item)) {
|
||||
let (sub_retain, current_index) = filter_recursion(elems, index, s, cx, params);
|
||||
retain.extend(sub_retain);
|
||||
index = current_index;
|
||||
} else if child.item.filter(cx, s, params) {
|
||||
retain.push(child.clone());
|
||||
}
|
||||
}
|
||||
if !retain.is_empty() || elem.item.filter(cx, s, params) {
|
||||
retain.insert(0, elem.clone());
|
||||
}
|
||||
(retain, index)
|
||||
}
|
||||
|
||||
if s.is_empty() {
|
||||
if let Some((_, recycle)) = self.recycle.take() {
|
||||
self.items = recycle;
|
||||
self.restore_view();
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
let mut retain = vec![];
|
||||
let mut index = 0;
|
||||
let items = match &self.recycle {
|
||||
Some((pre, _)) if pre == s => return,
|
||||
Some((pre, recycle)) if pre.contains(s) => recycle,
|
||||
_ => &self.items,
|
||||
};
|
||||
while let Some(elem) = items.get(index) {
|
||||
let next = items.get(index + 1);
|
||||
if next.map_or(false, |n| n.item.is_child(&elem.item)) {
|
||||
let (sub_items, current_index) = filter_recursion(items, index, s, cx, params);
|
||||
index = current_index;
|
||||
retain.extend(sub_items);
|
||||
} else if elem.item.filter(cx, s, params) {
|
||||
retain.push(elem.clone())
|
||||
}
|
||||
index += 1;
|
||||
}
|
||||
|
||||
if retain.is_empty() {
|
||||
if let Some((_, recycle)) = self.recycle.take() {
|
||||
self.items = recycle;
|
||||
self.restore_view();
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
let recycle = std::mem::replace(&mut self.items, retain);
|
||||
if let Some(r) = self.recycle.as_mut() {
|
||||
r.0 = s.into()
|
||||
} else {
|
||||
self.recycle = Some((s.into(), recycle));
|
||||
self.save_view();
|
||||
}
|
||||
|
||||
self.selected = self
|
||||
.find(0, false, |elem| elem.item.filter(cx, s, params))
|
||||
.unwrap_or(0);
|
||||
self.winline = self.selected;
|
||||
}
|
||||
|
||||
pub fn clean_recycle(&mut self) {
|
||||
self.recycle = None;
|
||||
}
|
||||
|
||||
pub fn restore_recycle(&mut self) {
|
||||
if let Some((_, recycle)) = self.recycle.take() {
|
||||
self.items = recycle;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue