feat(picker): added custom options to vim.ui.select that snacks can use for a better select

lua/snacks/picker/format.lua

@@ -312,18 +312,18 @@ function M.lsp_symbol(item, picker)
   return ret
 end
 
----@param kind? string
----@param count number
+---@param opts snacks.picker.ui_select.Opts
 ---@return snacks.picker.format
-function M.ui_select(kind, count)
-  return function(item)
+function M.ui_select(opts)
+  return function(item, picker)
+    local count = picker:count()
     local ret = {} ---@type snacks.picker.Highlight[]
     local idx = tostring(item.idx)
     idx = (" "):rep(#tostring(count) - #idx) .. idx
     ret[#ret + 1] = { idx .. ".", "SnacksPickerIdx" }
     ret[#ret + 1] = { " " }
 
-    if kind == "codeaction" then
+    if opts.kind == "codeaction" then
       ---@type lsp.Command|lsp.CodeAction, lsp.HandlerContext
       local action, ctx = item.item.action, item.item.ctx
       local client = vim.lsp.get_client_by_id(ctx.client_id)
@@ -332,6 +332,13 @@ function M.ui_select(kind, count)
         ret[#ret + 1] = { " " }
         ret[#ret + 1] = { ("[%s]"):format(client.name), "SnacksPickerSpecial" }
       end
+    elseif opts.kind == "snacks" and opts.format_item then
+      local t = opts.format_item(item.item, true)
+      if type(t) == "string" then
+        ret[#ret + 1] = { t }
+      elseif type(t) == "table" then
+        vim.list_extend(ret, t)
+      end
     else
       ret[#ret + 1] = { item.formatted }
     end

lua/snacks/picker/select.lua

@@ -2,37 +2,44 @@ local M = {}
 
 ---@alias snacks.picker.ui_select fun(items: any[], opts?: {prompt?: string, format_item?: (fun(item: any): string), kind?: string}, on_choice: fun(item?: any, idx?: number))
 
+---@class snacks.picker.ui_select.Opts: vim.ui.select.Opts
+---@field format_item? fun(item: any, is_snacks: boolean):(string|snacks.picker.Highlight[])
+---@field picker? snacks.picker.Config
+
 ---@generic T
 ---@param items T[] Arbitrary items
----@param opts? {prompt?: string, format_item?: (fun(item: T): string), kind?: string}
+---@param opts? snacks.picker.ui_select.Opts
 ---@param on_choice fun(item?: T, idx?: number)
 function M.select(items, opts, on_choice)
   assert(type(on_choice) == "function", "on_choice must be a function")
   opts = opts or {}
 
-  ---@type snacks.picker.finder.Item[]
-  local finder_items = {}
-  for idx, item in ipairs(items) do
-    local text = (opts.format_item or tostring)(item)
-    table.insert(finder_items, {
-      formatted = text,
-      text = idx .. " " .. text,
-      item = item,
-      idx = idx,
-    })
-  end
-
   local title = opts.prompt or "Select"
   title = title:gsub("^%s*", ""):gsub("[%s:]*$", "")
   local completed = false
+  opts.kind = opts.kind or (opts.picker and "snacks") or opts.kind
 
-  ---@type snacks.picker.finder.Item[]
-  return Snacks.picker.pick({
+  ---@type snacks.picker.Config
+  local picker_opts = {
     source = "select",
-    items = finder_items,
-    format = Snacks.picker.format.ui_select(opts.kind, #items),
+    finder = function()
+      ---@type snacks.picker.finder.Item[]
+      local ret = {}
+      for idx, item in ipairs(items) do
+        local text = (opts.format_item or tostring)(item)
+        ---@type snacks.picker.finder.Item
+        local it = type(item) == "table" and setmetatable({}, { __index = item }) or {}
+        it.formatted = text
+        it.text = idx .. " " .. text
+        it.item = item
+        it.idx = idx
+        ret[#ret + 1] = it
+      end
+      return ret
+    end,
+    format = Snacks.picker.format.ui_select(opts),
     title = title,
-    layout = {
+    layout = opts.picker and opts.picker.layout or {
       preview = false,
       layout = {
         height = math.floor(math.min(vim.o.lines * 0.8 - 10, #items + 2) + 0.5),
@@ -57,7 +64,11 @@ function M.select(items, opts, on_choice)
       completed = true
       vim.schedule(on_choice)
     end,
-  })
+  }
+  if opts.picker then
+    picker_opts = Snacks.config.merge({}, vim.deepcopy(picker_opts), opts.picker)
+  end
+  return Snacks.picker.pick(picker_opts)
 end
 
 return M