diff --git a/sfinv_buttons/depends.txt b/sfinv_buttons/depends.txt
new file mode 100644
index 0000000..1b60254
--- /dev/null
+++ b/sfinv_buttons/depends.txt
@@ -0,0 +1,2 @@
+smart_sfinv_api
+intllib?
diff --git a/sfinv_buttons/init.lua b/sfinv_buttons/init.lua
new file mode 100644
index 0000000..8f6f02c
--- /dev/null
+++ b/sfinv_buttons/init.lua
@@ -0,0 +1,102 @@
+-- Based on "https://gist.githubusercontent.com/rubenwardy/10074b66bd6e409c72c3ad0f79f5771a/raw/47389bbf0dc6badd79362361d0592053add7ceab/init.lua
+
+-- Boilerplate to support localized strings if intllib mod is installed.
+local S
+if minetest.get_modpath("intllib") then
+	S = intllib.Getter()
+else
+	S = function(s) return s end
+end
+
+local buttons = {}
+local button_names_sorted = {}
+local buttons_num = 0
+
+local button_prefix = "sfinv_button_"
+
+-- Stores selected index in textlist
+local player_indexes = {}
+local player_selections = {}
+
+sfinv_buttons = {}
+
+sfinv_buttons.register_button = function(name, def)
+	buttons[name] = def
+	table.insert(button_names_sorted, name)
+	buttons_num = buttons_num + 1
+end
+
+-- Turns a textlist index to a button name
+local index_to_button_name = function(index, player)
+	local internal_index = 1
+	for i=1, #button_names_sorted do
+		local name = button_names_sorted[i]
+		local def = buttons[name]
+		if internal_index == index then
+			if def.show == nil or def.show(player) == true then
+				return name
+			end
+		end
+		internal_index = internal_index + 1
+	end
+	return
+end
+
+smart_sfinv_api.register_enhancement({
+	make_formspec = function(handler, player, context, content, show_inv)
+		handler.formspec_size_add_w = handler.formspec_size_add_w + 1
+
+		local x = 8.1
+		local y = 0
+
+		local retval = ""
+
+		local buttons_added = 0
+		for i=1, #button_names_sorted do
+			local name = button_names_sorted[i]
+			local def = buttons[name]
+			if def.show == nil or def.show(player) == true then
+				local button_id = minetest.formspec_escape(button_prefix .. name)
+				retval = retval .. table.concat({
+					"image_button[",
+					x, ",", y, ";",
+					1, ",", 1, ";",
+					def.image, ";",
+					button_id, ";]"}, "")
+
+				local tooltip = def.title
+				if def.tooltip and def.tooltip ~= def.title then
+					tooltip = tooltip or ""
+					tooltip = tooltip .. " " .. def.tooltip
+				end
+
+				if tooltip ~= nil then
+					retval = retval .. "tooltip["..button_id..";"..
+						minetest.formspec_escape(tooltip).."]"
+				end
+
+				y = y + 1
+			end
+		end
+
+		handler.formspec_after_navfs = handler.formspec_after_navfs .. retval
+	end,
+
+	receive_fields = function(handler, player, context, fields)
+		local player_name = player:get_player_name()
+		-- TODO: Test support case when some buttons are hidden for player
+		if fields.sfinv_buttons_action then
+			local button = buttons[player_selections[player_name]]
+			if button ~= nil and button.action ~= nil then
+				button.action(player)
+			end
+		else
+			for widget_name, _ in pairs(fields) do
+				local id = string.sub(widget_name, string.len(button_prefix) + 1, -1)
+				if buttons[id] ~= nil and buttons[id].action ~= nil then
+					buttons[id].action(player)
+				end
+			end
+		end
+	end
+})