/src/wrappers/gtk/library/insert_at_cursor_callback.e

 1indexing
 2	description: "Generic callback for the insert-at-cursor signal"
 3	copyright: "[
 4					Copyright (C) 2007 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 INSERT_AT_CURSOR_CALLBACK
26
27inherit CALLBACK redefine object end
28
29insert G_OBJECT_FACTORY [GTK_TEXT_VIEW]
30
31creation make
32
33feature
34	object: GTK_TEXT_VIEW
35
36feature
37
38	callback (an_arg, instance: POINTER) is
39		local
40			input: STRING
41		do
42			object := wrapper(instance)
43			create input.from_external (an_arg) 
44			-- We might have to do an from_external_copy here
45			-- instead. The GTK documentation does not say it is const,
46			-- so we should handle its memory, AFAIK. Paolo 2008-04-07
47			procedure.call ([input, object])
48		end
49
50	callback_pointer: POINTER is
51		do
52			Result := get_callback_pointer ($callback)
53		ensure
54			Result.is_not_null
55		end
56
57	connect (an_object: GTK_TEXT_VIEW; a_procedure: PROCEDURE [ANY, TUPLE[STRING, GTK_TEXT_VIEW]]) is
58		do
59			handler_id := g_signal_connect_closure (an_object.handle,
60																 signal_name.to_external,
61																 handle,
62																 0 -- i.e. call it before the default handler
63																)
64			procedure := a_procedure
65		end
66
67		signal_name: STRING is "insert-at-cursor"
68
69	procedure: PROCEDURE [ANY, TUPLE[STRING, GTK_TEXT_VIEW]]
70
71end -- class INSERT_AT_CURSOR_CALLBACK