event.lua

   1 #!/usr/bin/lua
   2
   3 --[[
   4
   5 Copyright (c) 2007-2008 Mauro Iazzi
   6
   7 Permission is hereby granted, free of charge, to any person
   8 obtaining a copy of this software and associated documentation
   9 files (the "Software"), to deal in the Software without
  10 restriction, including without limitation the rights to use,
  11 copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 copies of the Software, and to permit persons to whom the
  13 Software is furnished to do so, subject to the following
  14 conditions:
  15
  16 The above copyright notice and this permission notice shall be
  17 included in all copies or substantial portions of the Software.
  18
  19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  21 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  22 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  23 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  24 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  25 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  26 OTHER DEALINGS IN THE SOFTWARE.
  27
  28 --]]
  29
  30 MyWidget = {
  31         event = function (b,e,...)
  32                 local mt, env = getmetatable(e), debug.getfenv(e)
  33                 print(mt, env)
  34                 table.foreach(env, print)
  35                 print(b.__qtype,e.__qtype,e:type(),...)
  36         end,
  37         __base = { QPushButton=QPushButton },
  38         __index = function(t, k) return QPushButton.__index(t, k) end,
  39         __newindex = QPushButton.__newindex,
  40 }
  41
  42 MyWidget.new = function(...)
  43         local ret = QPushButton.new(...)
  44         debug.setmetatable(ret, MyWidget)
  45         print(ret, getmetatable(ret), MyWidget )
  46         return ret
  47 end
  48
  49 b = MyWidget.new()
  50
  51 print(b, b.__index, '->', type(b.__index(b, "show")))
  52 b:show()
  53
  54 return true, tostring(getmetatable(b)), tostring(MyWidget)
  55
  56