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Show each file's slug as a file-list hover tooltip

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Hovering a file in the left pane now shows its `# Slug:` line as a
tooltip — a one-line synopsis per chapter. Slugs are cached per file
(name -> slug), filled when the workspace opens (snapshot_slugs) and
refreshed on save; the selected file is parsed live from the buffer so
unsaved slug edits show immediately. The cache is kept consistent on
rename and delete.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N9kRuP7JvXoUGdNNeg5ZSs
This commit is contained in:
landon
2026-08-14 06:46:44 -05:00
parent 9d2207ba96
commit 9c4498a680
2 changed files with 58 additions and 10 deletions
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README.md
+2 -1
View File
@@ -4,7 +4,8 @@ A small desktop application for Debian that treats a directory of markdown files
as an ordered manuscript.
* **Left pane** — every `*.md` file in the workspace directory, in a manual order
you set by **dragging the `⠿` handle** up and down.
you set by **dragging the `⠿` handle** up and down. **Hover a file** to see its
`# Slug:` line as a tooltip — a handy one-line synopsis of each chapter.
* **Right pane** — a markdown text editor for the selected file (optional live
preview via the *Preview* checkbox).
* **Order + contents are saved and version-controlled with git.** The order lives
src/app.rs
+56 -9
View File
@@ -74,6 +74,10 @@ pub struct App {
/// Each file's word count captured when the workspace was opened, used as the
/// per-file baseline for the "this session" delta.
session_start_counts: HashMap<String, usize>,
/// Cached `# Slug:` value per file (name -> slug) for the file-list hover
/// tooltip. Filled when the workspace opens and refreshed on save; the
/// selected file is read live from the buffer instead.
slugs: HashMap<String, String>,
/// Grammar/spelling issues from the last LanguageTool check.
lt_matches: Vec<crate::langtool::Match>,
/// The exact buffer text the current `lt_matches` were computed against;
@@ -159,6 +163,7 @@ impl App {
repo_root: None,
pending_repo: None,
session_start_counts: HashMap::new(),
slugs: HashMap::new(),
lt_matches: Vec::new(),
lt_checked_text: String::new(),
lt_status: String::new(),
@@ -216,6 +221,7 @@ impl App {
self.pending_delete = false;
self.clear_lt();
self.session_start_counts = self.snapshot_counts();
self.slugs = self.snapshot_slugs();
if !self.files.is_empty() {
self.select(0);
}
@@ -289,6 +295,19 @@ impl App {
.collect()
}
/// Read every file and return its `# Slug:` header value (only for files that
/// have one), for the file-list hover tooltip.
fn snapshot_slugs(&self) -> HashMap<String, String> {
self.files
.iter()
.filter_map(|name| {
let text = std::fs::read_to_string(self.path_for(name)).unwrap_or_default();
let header = crate::preprocess::parse(&text, &self.config.draft_marker);
header.slug.map(|slug| (name.clone(), slug))
})
.collect()
}
fn persist_order(&self) {
let _ = order::write_order(self.workspace(), &self.files);
}
@@ -321,12 +340,26 @@ impl App {
fn save_current(&mut self) {
if let Some(idx) = self.selected {
if self.dirty {
if let Some(name) = self.files.get(idx) {
let path = self.path_for(name);
if let Some(name) = self.files.get(idx).cloned() {
let path = self.path_for(&name);
match std::fs::write(&path, &self.buffer) {
Ok(_) => {
self.dirty = false;
self.status = format!("Saved {name}");
// Keep the hover-tooltip slug cache in step.
let slug = crate::preprocess::parse(
&self.buffer,
&self.config.draft_marker,
)
.slug;
match slug {
Some(s) => {
self.slugs.insert(name, s);
}
None => {
self.slugs.remove(&name);
}
}
}
Err(e) => self.status = format!("Save failed: {e}"),
}
@@ -412,6 +445,7 @@ impl App {
self.files.remove(idx);
self.titles.remove(&name);
self.session_start_counts.remove(&name);
self.slugs.remove(&name);
self.persist_titles();
self.persist_order();
self.selected = None;
@@ -463,6 +497,9 @@ impl App {
if let Some(words) = self.session_start_counts.remove(&old_name) {
self.session_start_counts.insert(new_name.clone(), words);
}
if let Some(slug) = self.slugs.remove(&old_name) {
self.slugs.insert(new_name.clone(), slug);
}
self.persist_order();
self.status = format!("Renamed to {new_name}");
}
@@ -1288,6 +1325,15 @@ impl App {
for idx in 0..self.files.len() {
let name = self.files[idx].clone();
let selected = self.selected == Some(idx);
// The selected file's slug is read live from the
// buffer (so unsaved edits show); others come from the
// cache filled on open/save.
let slug = if selected {
crate::preprocess::parse(&self.buffer, &self.config.draft_marker)
.slug
} else {
self.slugs.get(&name).cloned()
};
let row = ui
.horizontal(|ui| {
ui.dnd_drag_source(
@@ -1299,13 +1345,14 @@ impl App {
);
},
);
if ui
.add_sized(
[ui.available_width(), 20.0],
egui::SelectableLabel::new(selected, &name),
)
.clicked()
{
let mut label = ui.add_sized(
[ui.available_width(), 20.0],
egui::SelectableLabel::new(selected, &name),
);
if let Some(slug) = &slug {
label = label.on_hover_text(slug);
}
if label.clicked() {
clicked = Some(idx);
}
})