feat(explorer): focus on first file when searching in the explorer

lua/snacks/picker/core/matcher.lua

@@ -7,6 +7,7 @@ local Async = require("snacks.picker.util.async")
 ---@class snacks.picker.matcher.Config
 ---@field regex? boolean used internally for positions of sources that use regex
 ---@field on_match? fun(matcher: snacks.picker.Matcher, item: snacks.picker.Item)
+---@field on_done? fun(matcher: snacks.picker.Matcher)
 
 ---@class snacks.picker.Matcher
 ---@field opts snacks.picker.matcher.Config
@@ -91,6 +92,9 @@ function M:run(picker)
   if not (self.sorting or picker.finder.task:running()) then
     picker.list.items = picker.finder.items
     picker:update({ force = true })
+    if self.opts.on_done then
+      self.opts.on_done(self)
+    end
     return
   end
 
@@ -157,6 +161,11 @@ function M:run(picker)
     until idx >= #picker.finder.items and not picker.finder.task:running()
 
     picker:update({ force = true })
+    if self.opts.on_done then
+      vim.schedule(function()
+        self.opts.on_done(self)
+      end)
+    end
   end)
 end
 

lua/snacks/picker/source/explorer.lua

@@ -163,6 +163,18 @@ function M.setup(opts)
           end
         end
       end,
+      on_done = function()
+        local picker = ref.value
+        if not picker or picker.closed then
+          return
+        end
+        for item, idx in picker:iter() do
+          if not item.dir then
+            picker.list:view(idx)
+            return
+          end
+        end
+      end,
     },
     formatters = {
       file = {
@@ -265,21 +277,6 @@ function M.search(opts, ctx)
   ---@async
   return function(cb)
     cb(root)
-    -- focus the first non-internal item
-    ctx.picker.matcher.task:on(
-      "done",
-      vim.schedule_wrap(function()
-        if ctx.picker.closed then
-          return
-        end
-        for item, idx in ctx.picker:iter() do
-          if not item.internal then
-            ctx.picker.list:view(idx)
-            return
-          end
-        end
-      end)
-    )
 
     ---@param item snacks.picker.explorer.Item
     local function add(item)