From 3d713dc34c0f568f1a028eaa951cd5c92da1176e Mon Sep 17 00:00:00 2001
From: hius07 <62179190+hius07@users.noreply.github.com>
Date: Thu, 6 May 2021 18:28:54 +0300
Subject: [PATCH] Dictionary: disable 'Clean history' when the history is empty
 (#7636)

---
 frontend/apps/reader/modules/readerdictionary.lua | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/frontend/apps/reader/modules/readerdictionary.lua b/frontend/apps/reader/modules/readerdictionary.lua
index 9a0d12910..cd72bbf01 100644
--- a/frontend/apps/reader/modules/readerdictionary.lua
+++ b/frontend/apps/reader/modules/readerdictionary.lua
@@ -287,14 +287,18 @@ function ReaderDictionary:addToMainMenu(menu_items)
             },
             {
                 text = _("Clean dictionary lookup history"),
+                enabled_func = function()
+                    return lookup_history:has("lookup_history")
+                end,
                 keep_menu_open = true,
-                callback = function()
+                callback = function(touchmenu_instance)
                     UIManager:show(ConfirmBox:new{
                         text = _("Clean dictionary lookup history?"),
                         ok_text = _("Clean"),
                         ok_callback = function()
                             -- empty data table to replace current one
                             lookup_history:reset{}
+                            touchmenu_instance:updateItems()
                         end,
                     })
                 end,