feat: add checkhealth messages

lua/dressing/health.lua

@@ -0,0 +1,27 @@
+local config = require("dressing.config")
+local patch = require("dressing.patch")
+
+local M = {}
+
+-- The "report_" functions have been deprecated, so use the new ones if defined.
+local health_start = vim.health.start or vim.health.report_start
+local health_warn = vim.health.warn or vim.health.report_warn
+local health_ok = vim.health.ok or vim.health.report_ok
+
+M.check = function()
+  health_start("dressing.nvim")
+  if patch.is_enabled("input") then
+    health_ok("vim.ui.input active")
+  else
+    health_warn("vim.ui.input not enabled")
+  end
+
+  if patch.is_enabled("select") then
+    local _, name = require("dressing.select").get_backend(config.select.backend)
+    health_ok("vim.ui.select active: " .. name)
+  else
+    health_warn("vim.ui.select not enabled")
+  end
+end
+
+return M

lua/dressing/patch.lua

@@ -10,14 +10,20 @@ end
 local enabled_mods = {}
 M.original_mods = {}
 
+---@param key string
+---@return boolean?
+M.is_enabled = function(key)
+  local enabled = enabled_mods[key]
+  if enabled == nil then
+    enabled = require("dressing.config")[key].enabled
+  end
+  return enabled
+end
+
 for _, key in ipairs(all_modules) do
   M.original_mods[key] = vim.ui[key]
   vim.ui[key] = function(...)
-    local enabled = enabled_mods[key]
-    if enabled == nil then
-      enabled = require("dressing.config")[key].enabled
-    end
-    if enabled then
+    if M.is_enabled(key) then
       require(string.format("dressing.%s", key))(...)
     else
       return M.original_mods[key](...)

lua/dressing/select/init.lua

@@ -1,8 +1,12 @@
 local global_config = require("dressing.config")
 local patch = require("dressing.patch")
 
-local function get_backend(config)
-  local backends = config.backend
+local M = {}
+
+---@param backends string|string[]
+---@return table select module
+---@return string name of backend
+M.get_backend = function(backends)
   if type(backends) ~= "table" then
     backends = { backends }
   end
@@ -29,7 +33,7 @@ end
 -- (see https://github.com/stevearc/dressing.nvim/issues/15)
 -- also to prevent focus problems for providers
 -- (see https://github.com/stevearc/dressing.nvim/issues/59)
-return vim.schedule_wrap(function(items, opts, on_choice)
+local select = vim.schedule_wrap(function(items, opts, on_choice)
   vim.validate({
     items = {
       items,
@@ -64,7 +68,7 @@ return vim.schedule_wrap(function(items, opts, on_choice)
     opts.format_item = sanitize_line
   end
 
-  local backend, name = get_backend(config)
+  local backend, name = M.get_backend(config.backend)
   local winid = vim.api.nvim_get_current_win()
   local cursor = vim.api.nvim_win_get_cursor(winid)
   backend.select(
@@ -79,3 +83,11 @@ return vim.schedule_wrap(function(items, opts, on_choice)
     end)
   )
 end)
+
+setmetatable(M, {
+  __call = function(_, ...)
+    return select(...)
+  end,
+})
+
+return M