diff --git a/tui.lua b/tui.lua
deleted file mode 100644
index e339656..0000000
--- a/tui.lua
+++ /dev/null
@@ -1,72 +0,0 @@
---!A cross-platform terminal ui library based on Lua
---
--- Licensed to the Apache Software Foundation (ASF) under one
--- or more contributor license agreements.  See the NOTICE file
--- distributed with this work for additional information
--- regarding copyright ownership.  The ASF licenses this file
--- to you under the Apache License, Version 2.0 (the
--- "License"); you may not use this file except in compliance
--- with the License.  You may obtain a copy of the License at
---
---     http://www.apache.org/licenses/LICENSE-2.0
---
--- Unless required by applicable law or agreed to in writing, software
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
---
--- Copyright (C) 2015-2020, TBOOX Open Source Group.
---
--- @author      ruki
--- @file        inputdialog.lua
---
--- require("tests/load")
-
---  requires
-local ltui        = require("ltui")
-local label       = ltui.label
-local button      = ltui.button
-local application = ltui.application
-local event       = ltui.event
-local rect        = ltui.rect
-local inputdialog = ltui.inputdialog
-
--- the demo application
-local demo = application()
-
--- init demo
-function demo:init()
-
-    -- init name
-    application.init(self, "demo")
-
-    -- init background
-    self:background_set("blue")
-
-    -- init input dialog
-    self:insert(self:dialog_input(), {centerx = true, centery = true})
-end
-
--- input dialog
-function demo:dialog_input()
-    local dialog_input = self._DIALOG_INPUT
-    if not dialog_input then
-        dialog_input = inputdialog:new("dialog.input", rect{0, 0, math.floor(self:width() / 2), math.floor(self:height() / 3)})
-        dialog_input:text():text_set("please input text:")
-        dialog_input:button_add("no", "< No >", function (v) dialog_input:quit() end)
-        dialog_input:button_add("yes", "< Yes >", function (v) dialog_input:quit() end)
-        self._DIALOG_INPUT = dialog_input
-    end
-    return dialog_input
-end
-
--- on resize
-function demo:on_resize()
-    self:dialog_input():bounds_set(rect{0, 0, math.floor(self:width() / 2), math.floor(self:height() / 3)})
-    self:center(self:dialog_input(), {centerx = true, centery = true})
-    application.on_resize(self)
-end
-
--- run demo
-demo:run()