/src/wrappers/gtk/library/row_activated_callback.e

 1indexing
 2	description: "Generic callback for the row-activated signal"
 3	copyright: "[
 4					Copyright (C) 2006 Paolo redaelli, 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 ROW_ACTIVATED_CALLBACK
26
27inherit
28	CALLBACK redefine object end
29
30creation make
31
32feature
33	object: GTK_TREE_VIEW
34
35feature
36
37	callback (tree_path, tree_view_col, instance: POINTER) is
38		local
39			tree_path_obj: GTK_TREE_PATH
40			tree_view_col_obj: GTK_TREE_VIEW_COLUMN
41			view_factory: G_OBJECT_EXPANDED_FACTORY [GTK_TREE_VIEW]
42			column_factory: G_OBJECT_EXPANDED_FACTORY [GTK_TREE_VIEW_COLUMN]
43		do
44			debug
45				print ("Callback: instance=") print (instance.to_string) print ("%N")
46			end
47			-- The following is written with the implicit requirement 
48			-- that the object is actually created by the Eiffel 
49			object := view_factory.wrapper(instance)
50			tree_view_col_obj := column_factory.wrapper(tree_view_col)
51			create tree_path_obj.copy_from_pointer (tree_path)
52			procedure.call ([tree_path_obj, tree_view_col_obj, 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_TREE_VIEW;
63				a_procedure: PROCEDURE [ANY, TUPLE[GTK_TREE_PATH, GTK_TREE_VIEW_COLUMN, GTK_TREE_VIEW]]) is
64		do
65			debug
66				print ("ROW_ACTIVATED_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 "row-activated"
82
83	procedure: PROCEDURE [ANY, TUPLE[GTK_TREE_PATH, GTK_TREE_VIEW_COLUMN, GTK_TREE_VIEW]]
84
85end