feat: multi-file spotter (#3733)

Co-authored-by: sxyazi <sxyazi@gmail.com>

CHANGELOG.md

@@ -16,6 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/):
 
 - Custom tab name ([#3666])
 - New `--in` for `search` action to set search directory ([#3696])
+- Multi-file spotter ([#3733])
 - New `hovered` condition specifying different icons for hovered files ([#3728])
 - Allow using `ps.sub()` in `init.lua` directly without a plugin ([#3638])
 - New `sort_fallback` option to control fallback sorting behavior ([#3077])
@@ -1672,3 +1673,4 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/):
 [#3708]: https://github.com/sxyazi/yazi/pull/3708
 [#3725]: https://github.com/sxyazi/yazi/pull/3725
 [#3728]: https://github.com/sxyazi/yazi/pull/3728
+[#3733]: https://github.com/sxyazi/yazi/pull/3733

yazi-actor/src/mgr/spot.rs

@@ -1,7 +1,7 @@
 use anyhow::Result;
-use yazi_macro::succ;
+use yazi_macro::{act, succ};
 use yazi_parser::mgr::SpotOpt;
-use yazi_shared::data::Data;
+use yazi_shared::{data::Data, pool::InternStr};
 
 use crate::{Actor, Ctx};
 
@@ -13,9 +13,15 @@ impl Actor for Spot {
 	const NAME: &str = "spot";
 
 	fn act(cx: &mut Ctx, opt: Self::Options) -> Result<Data> {
+		act!(mgr:escape_visual, cx)?;
 		let Some(hovered) = cx.hovered().cloned() else { succ!() };
 
-		let mime = cx.mgr.mimetype.owned(&hovered.url).unwrap_or_default();
+		let mime = if cx.tab().selected.is_empty() {
+			cx.mgr.mimetype.owned(&hovered.url).unwrap_or_default()
+		} else {
+			"multi/unknown".intern()
+		};
+
 		// if !self.active().spot.same_file(&hovered, &mime) {
 		// self.active_mut().spot.reset();
 		// }

yazi-config/preset/yazi-default.toml

@@ -105,6 +105,9 @@ fetchers = [
 	{ id = "mime", url = "remote://*", run = "mime.remote", prio = "high" },
 ]
 spotters = [
+	# Multi-file
+	{ mime = "multi/*", run = "multi" },
+	# Folder
 	{ url = "*/", run = "folder" },
 	# Code
 	{ mime = "text/*", run = "code" },

yazi-plugin/preset/plugins/multi.lua

@@ -0,0 +1,73 @@
+--- @sync peek
+
+local M = {}
+
+local selected = ya.sync(function()
+	local urls = {}
+	for _, u in pairs(cx.active.selected) do
+		urls[#urls + 1] = u
+	end
+	return urls
+end)
+
+function M:spot(job)
+	self.sum, self.sizes, self.last, self.selected = 0, {}, 0, selected()
+	self:spot_multi(job, false)
+
+	for _, u in ipairs(self.selected) do
+		local it, size = fs.calc_size(u), 0
+		while true do
+			local next = it:recv()
+			if next then
+				size, self.sum = size + next, self.sum + next
+				self:spot_multi(job, false)
+			else
+				self.sizes[u], size = size, 0
+				break
+			end
+		end
+	end
+
+	self:spot_multi(job, true)
+end
+
+function M:spot_multi(job, comp)
+	local now = ya.time()
+	if not comp and now < self.last + 0.1 then
+		return
+	end
+
+	local rows = {
+		ui.Row({ "Multi" }):style(ui.Style():fg("green")),
+		ui.Row { "  Count:", string.format("%d selected", #self.selected) },
+		ui.Row { "  Size:", ya.readable_size(self.sum) .. (comp and "" or " (?)") },
+	}
+
+	ya.spot_table(
+		job,
+		ui.Table(rows)
+			:area(ui.Pos { "center", w = 60, h = 20 })
+			:row(self.last == 0 and 1 or nil)
+			:col(1)
+			:col_style(th.spot.tbl_col)
+			:cell_style(th.spot.tbl_cell)
+			:widths { ui.Constraint.Length(14), ui.Constraint.Fill(1) }
+	)
+
+	self:update_sizes()
+	self.last = now
+end
+
+function M:update_sizes()
+	local parents = {}
+	for url, size in pairs(self.sizes) do
+		local p = url.parent
+		parents[p] = parents[p] or {}
+		parents[p][url.urn] = size
+	end
+	for parent, sizes in pairs(parents) do
+		ya.emit("update_files", { op = fs.op("size", { url = parent, sizes = sizes }) })
+	end
+end
+
+return M

yazi-plugin/src/loader/loader.rs

@@ -44,6 +44,7 @@ impl Default for Loader {
 			("mime.dir".to_owned(), preset!("plugins/mime-dir").into()),
 			("mime.local".to_owned(), preset!("plugins/mime-local").into()),
 			("mime.remote".to_owned(), preset!("plugins/mime-remote").into()),
+			("multi".to_owned(), preset!("plugins/multi").into()),
 			("noop".to_owned(), preset!("plugins/noop").into()),
 			("null".to_owned(), preset!("plugins/null").into()),
 			("pdf".to_owned(), preset!("plugins/pdf").into()),