/src/wrappers/gtk/library/change_value_callback.e

http://github.com/tybor/Liberty · Specman e · 78 lines · 64 code · 14 blank · 0 comment · 3 complexity · 2afa70a8ae8c2d090efed1e559a5f480 MD5 · raw file

  1. indexing
  2. description: "Generic callback for the change-value signal"
  3. copyright: "[
  4. Copyright (C) 2006 Paolo redaelli, eiffel-libraries team, GTK+ team and others
  5. This library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public License
  7. as published by the Free Software Foundation; either version 2.1 of
  8. the License, or (at your option) any later version.
  9. This library is distributed in the hope that it will be useful, but
  10. WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with this library; if not, write to the Free Software
  15. Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  16. 02110-1301 USA
  17. ]"
  18. license: "LGPL v2 or later"
  19. date: "$Date:$"
  20. revision "$Revision:$"
  21. class CHANGE_VALUE_CALLBACK
  22. inherit CALLBACK redefine object end
  23. insert G_OBJECT_FACTORY [GTK_RANGE]
  24. creation make
  25. feature
  26. object: GTK_RANGE
  27. feature
  28. callback (value: REAL; scroll: INTEGER; instance: POINTER): INTEGER is
  29. require
  30. instance_not_null: instance.is_not_null
  31. do
  32. debug
  33. print ("Callback: instance=") print (instance.to_string) print ("%N")
  34. print ("is_object: "+g_is_object (instance).out+"%N")
  35. print ("type: "+g_object_type (instance).out+"%N")
  36. end
  37. object := wrapper(instance)
  38. Result := function.item ([value, scroll, object]).to_integer
  39. end
  40. callback_pointer: POINTER is
  41. do
  42. Result := get_callback_pointer ($callback)
  43. ensure
  44. Result.is_not_null
  45. end
  46. connect (an_object: GTK_RANGE; a_function: FUNCTION[ANY, TUPLE [REAL, INTEGER, GTK_RANGE], BOOLEAN]) is
  47. do
  48. debug
  49. print ("CHANGE_VALUE_CALLBACK.connect (an_object=") print (an_object.to_pointer.to_string)
  50. print (" an_object.handle=") print (an_object.handle.to_string)
  51. print (") Current=") print (to_pointer.to_string)
  52. print (" Current.handle=") print (handle.to_string)
  53. print ("%N")
  54. end
  55. handler_id := g_signal_connect_closure (an_object.handle,
  56. signal_name.to_external,
  57. handle,
  58. 0 -- i.e. call it before default handler
  59. )
  60. function:=a_function
  61. end
  62. signal_name: STRING is "change-value"
  63. function: FUNCTION[ANY, TUPLE [REAL, INTEGER, GTK_RANGE], BOOLEAN]
  64. end