/src/wrappers/gtk/library/editing_started_callback.e

 1indexing
 2	description: "Generic callback for the editing-started signal"
 3	copyright: "[
 4					Copyright (C) 2006 eiffel-libraries team,  GTK+ team and others
 5					
 6					This library is free software; you can redistribute it and/or
 7					modify it under the terms of the GNU Lesser General Public License
 8					as published by the Free Software Foundation; either version 2.1 of
 9					the License, or (at your option) any later version.
10					
11					This library is distributed in the hope that it will be useful, but
12					WITHOUT ANY WARRANTY; without even the implied warranty of
13					MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14					Lesser General Public License for more details.
15
16					You should have received a copy of the GNU Lesser General Public
17					License along with this library; if not, write to the Free Software
18					Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19					02110-1301 USA
20				]"
21	license: "LGPL v2 or later"
22	date: "$Date:$"
23	revision "$Revision:$"
24
25class EDITING_STARTED_CALLBACK
26
27inherit CALLBACK redefine object end
28
29insert G_OBJECT_FACTORY [GTK_CELL_RENDERER]
30
31creation make
32
33feature
34	object: GTK_CELL_RENDERER
35
36feature
37	callback (editable_ptr, path_ptr, instance: POINTER) is
38		local
39			cell_editable_factory: G_OBJECT_FACTORY[GTK_CELL_EDITABLE]
40			an_editable: GTK_CELL_EDITABLE
41			a_path: STRING
42		do
43			debug print ("Callback: instance=") print (instance.to_string) print ("%N") end
44			-- The following is written with the implicit requirement 
45			-- that the button is actually created bu the Eiffel 
46			-- application. 
47			object := wrapper(instance)
48			
49			an_editable := cell_editable_factory.wrapper(editable_ptr)
50
51			if path_ptr.is_not_null then  create {CONST_STRING} a_path.from_external(path_ptr) end
52			procedure.call ([an_editable, a_path, object])
53		end
54
55	callback_pointer: POINTER is
56		do
57			Result := get_callback_pointer ($callback)
58		ensure
59			Result.is_not_null
60		end
61
62	connect (an_object: GTK_CELL_RENDERER; a_procedure: PROCEDURE [ANY, TUPLE[GTK_CELL_EDITABLE,
63																									  STRING, GTK_CELL_RENDERER]]) is
64		do
65			debug
66				print ("EDITING_STARTED_CALLBACK.connect (an_object=") print (an_object.to_pointer.to_string)
67				print (" an_object.handle=") print (an_object.handle.to_string)
68				print (") Current=") print (to_pointer.to_string)
69				print (" Current.handle=") print (handle.to_string)
70				print ("%N")
71			end
72			
73			handler_id := g_signal_connect_closure (an_object.handle,
74																 signal_name.to_external,
75																 handle,
76																 0 -- i.e. call it before default handler
77																)
78			procedure:=a_procedure
79		end
80
81	signal_name: STRING is "editing-started"
82
83	procedure: PROCEDURE [ANY, TUPLE[GTK_CELL_EDITABLE, STRING, GTK_CELL_RENDERER]]
84end