egui/eframe UI, clean up deps, remove Svelte/Tauri frontend

src-tauri/src/ui/panels/file_pane.rs

@@ -0,0 +1,100 @@
+use crate::domain::file_entry::{EntryKind, FileEntry};
+use crate::ui::drag::DragPayload;
+use egui::{Grid, Id};
+
+pub fn format_size(bytes: Option<u64>) -> String {
+    match bytes {
+        None => String::new(),
+        Some(b) if b < 1024 => format!("{} B", b),
+        Some(b) if b < 1024 * 1024 => format!("{:.1} KB", b as f64 / 1024.0),
+        Some(b) if b < 1024 * 1024 * 1024 => {
+            format!("{:.1} MB", b as f64 / (1024.0 * 1024.0))
+        }
+        Some(b) => format!("{:.2} GB", b as f64 / (1024.0 * 1024.0 * 1024.0)),
+    }
+}
+
+pub fn format_time(ts: Option<i64>) -> String {
+    match ts.and_then(|t| chrono::DateTime::from_timestamp(t, 0)) {
+        Some(dt) => dt.format("%Y-%m-%d %H:%M").to_string(),
+        None => String::new(),
+    }
+}
+
+pub struct FileTableResponse {
+    pub double_clicked: Option<String>,
+    pub clicked: Option<String>,
+}
+
+pub fn file_table<F>(
+    ui: &mut egui::Ui,
+    id: &str,
+    entries: &[FileEntry],
+    selected: &mut Option<String>,
+    make_drag_payload: F,
+) -> FileTableResponse
+where
+    F: Fn(&FileEntry) -> Option<DragPayload>,
+{
+    let mut double_clicked: Option<String> = None;
+    let mut clicked: Option<String> = None;
+
+    let mut sorted = entries.to_vec();
+    sorted.sort_by(|a, b| match (&a.kind, &b.kind) {
+        (EntryKind::Dir, EntryKind::Dir) => a.name.cmp(&b.name),
+        (EntryKind::Dir, _) => std::cmp::Ordering::Less,
+        (_, EntryKind::Dir) => std::cmp::Ordering::Greater,
+        _ => a.name.cmp(&b.name),
+    });
+
+    egui::ScrollArea::vertical()
+        .auto_shrink([false; 2])
+        .show(ui, |ui| {
+            Grid::new(id)
+                .striped(true)
+                .min_col_width(60.0)
+                .show(ui, |ui| {
+                    ui.strong("Name");
+                    ui.strong("Size");
+                    ui.strong("Type");
+                    ui.strong("Modified");
+                    ui.end_row();
+
+                    for entry in &sorted {
+                        let is_selected = selected.as_ref() == Some(&entry.name);
+
+                        let response = if let Some(payload) = make_drag_payload(entry) {
+                            let drag_id = Id::new(("drag", id, &entry.name));
+                            ui.dnd_drag_source(drag_id, payload, |ui| {
+                                ui.selectable_label(is_selected, &entry.name)
+                            })
+                            .response
+                        } else {
+                            ui.selectable_label(is_selected, &entry.name)
+                        };
+
+                        if response.clicked() {
+                            *selected = Some(entry.name.clone());
+                            clicked = Some(entry.name.clone());
+                        }
+                        if response.double_clicked() {
+                            double_clicked = Some(entry.name.clone());
+                        }
+
+                        ui.label(format_size(entry.size));
+                        ui.label(match entry.kind {
+                            EntryKind::Dir => "Dir",
+                            EntryKind::File => "File",
+                            EntryKind::Symlink => "Link",
+                        });
+                        ui.label(format_time(entry.modified));
+                        ui.end_row();
+                    }
+                });
+        });
+
+    FileTableResponse {
+        double_clicked,
+        clicked,
+    }
+}