fix(ui): close picker on empty items

lua/opencode/ui/base_picker.lua

@@ -19,6 +19,7 @@ local Promise = require('opencode.promise')
 ---@field multi_selection? table<string, boolean> Actions that support multi-selection
 ---@field preview? "file"|"none"|false Preview mode: "file" for file preview, "none" or false to disable
 ---@field layout_opts? OpencodeUIPickerConfig
+---@field close? fun() Close the picker programmatically (set by the backend)
 
 ---@class TelescopeEntry
 ---@field value any
@@ -147,6 +148,11 @@ local function telescope_ui(opts)
         width = opts.width + 7, -- extra space for telescope UI
       } or nil,
     attach_mappings = function(prompt_bufnr, map)
+      opts.close = function()
+        selection_made = true
+        actions.close(prompt_bufnr)
+      end
+
       actions.select_default:replace(function()
         selection_made = true
         local selection = action_state.get_selected_entry()
@@ -197,8 +203,12 @@ local function telescope_ui(opts)
               local new_items = action.fn(items_to_process, opts)
               Promise.wrap(new_items):and_then(function(resolved_items)
                 if action.reload and resolved_items then
-                  opts.items = resolved_items
-                  refresh_picker()
+                  if #resolved_items == 0 and opts.close then
+                    opts.close()
+                  else
+                    opts.items = resolved_items
+                    refresh_picker()
+                  end
                 end
               end)
             end
@@ -295,9 +305,33 @@ local function fzf_ui(opts)
     end)
   end
 
+  local closed = false
+
+  opts.close = function()
+    if closed then
+      return
+    end
+    closed = true
+    vim.schedule(function()
+      local ok, fzf_win = pcall(require, 'fzf-lua.win')
+      if ok and fzf_win.__SELF then
+        local win = fzf_win.__SELF()
+        if win then
+          win:close()
+        end
+      end
+      if opts.callback then
+        opts.callback(nil)
+      end
+    end)
+  end
+
   ---@type FzfLuaActions
   local actions_config = {
     ['default'] = function(selected, fzf_opts)
+      if closed then
+        return
+      end
       if not selected or #selected == 0 then
         if opts.callback then
           opts.callback(nil)
@@ -310,6 +344,9 @@ local function fzf_ui(opts)
       end
     end,
     ['esc'] = function()
+      if closed then
+        return
+      end
       if opts.callback then
         opts.callback(nil)
       end
@@ -346,8 +383,12 @@ local function fzf_ui(opts)
             Promise.wrap(new_items):and_then(function(resolved_items)
               if action.reload and resolved_items then
                 ---@cast resolved_items any[]
-                opts.items = resolved_items
-                refresh_fzf()
+                if #resolved_items == 0 and opts.close then
+                  opts.close()
+                else
+                  opts.items = resolved_items
+                  refresh_fzf()
+                end
               end
             end)
           end
@@ -376,6 +417,10 @@ local function mini_pick_ui(opts)
 
   local mappings = {}
 
+  opts.close = function()
+    mini_pick.stop()
+  end
+
   for action_name, action in pairs(opts.actions) do
     if action.key and action.key[1] then
       mappings[action_name] = {
@@ -387,8 +432,12 @@ local function mini_pick_ui(opts)
             local new_items = action.fn(current.item, opts)
             Promise.wrap(new_items):and_then(function(resolved_items)
               if action.reload and resolved_items then
-                opts.items = resolved_items
-                mini_pick_ui(opts)
+                if #resolved_items == 0 and opts.close then
+                  opts.close()
+                else
+                  opts.items = resolved_items
+                  mini_pick_ui(opts)
+                end
               end
             end)
           end
@@ -522,6 +571,13 @@ local function snacks_picker_ui(opts)
       snack_opts.win.input.keys[action.key[1]] = { action_name, mode = action.key.mode or 'i' }
 
       snack_opts.actions[action_name] = function(_picker, item)
+        if not opts.close then
+          opts.close = function()
+            selection_made = true
+            _picker:close()
+          end
+        end
+
         if item then
           local items_to_process
           if action.multi_selection then
@@ -540,9 +596,13 @@ local function snacks_picker_ui(opts)
             local new_items = action.fn(items_to_process, opts)
             Promise.wrap(new_items):and_then(function(resolved_items)
               if action.reload and resolved_items then
-                opts.items = resolved_items
-                _picker:refresh()
-                _picker:find()
+                if #resolved_items == 0 and opts.close then
+                  opts.close()
+                else
+                  opts.items = resolved_items
+                  _picker:refresh()
+                  _picker:find()
+                end
               end
             end)
           end)