/src/wrappers/gtk/library/buffer_insert_text_callback.e

 1indexing
 2	description: "Generic callback for the insert-text 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 BUFFER_INSERT_TEXT_CALLBACK
26
27inherit CALLBACK
28	redefine
29		object
30	end
31
32insert G_OBJECT_FACTORY [GTK_TEXT_BUFFER]
33
34creation make
35
36feature
37	object: GTK_TEXT_BUFFER
38
39feature
40
41	callback (iter, string: POINTER; len: INTEGER; instance: POINTER) is
42		local
43			iter_obj: GTK_TEXT_ITER
44			input: STRING
45		do
46			debug
47				print ("Callback: instance=") print (instance.to_string) print ("%N")
48			end
49			-- The following is written with the implicit requirement 
50			-- that object actually has an Eiffel wrapper
51			object := wrapper(instance)
52
53			create iter_obj.from_external_copy (iter)
54			create input.from_external_copy (string)
55			procedure.call ([iter_obj, input, object])
56		end
57
58	callback_pointer: POINTER is
59		do
60			Result := get_callback_pointer ($callback)
61		ensure
62			Result.is_not_null
63		end
64
65	connect (an_object: GTK_TEXT_BUFFER; a_procedure: PROCEDURE [ANY, TUPLE[GTK_TEXT_ITER, STRING, GTK_TEXT_BUFFER]]) is
66		do
67			handler_id := g_signal_connect_closure (an_object.handle,
68													 signal_name.to_external,
69													 handle,
70													 1 -- i.e. call it before default handler
71													 )
72			procedure := a_procedure
73		end
74
75	signal_name: STRING is "insert-text"
76
77	procedure: PROCEDURE [ANY, TUPLE[GTK_TEXT_ITER, STRING, GTK_TEXT_BUFFER]]
78
79end -- class BUFFER_INSERT_TEXT_CALLBACK