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1 /*
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2 of the License, or (at your option) version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with the program; if not, see <http://www.gnu.org/licenses/>
15 *
16 *
17 * Authors:
18 * Yang Wu <yang.wu@sun.com>
19 *
20 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
21 *
22 */
23
24 #ifdef HAVE_CONFIG_H
25 #include <config.h>
26 #endif
27
28 #include "ea-jump-button.h"
29 #include "ea-calendar-helpers.h"
30 #include "ea-week-view.h"
31 #include "e-week-view.h"
32 #include <libgnomecanvas/libgnomecanvas.h>
33 #include <glib/gi18n.h>
34
35 static void ea_jump_button_class_init (EaJumpButtonClass *klass);
36
37 static const gchar * ea_jump_button_get_name (AtkObject *accessible);
38 static const gchar * ea_jump_button_get_description (AtkObject *accessible);
39
40 /* action interface */
41 static void atk_action_interface_init (AtkActionIface *iface);
42 static gboolean jump_button_do_action (AtkAction *action,
43 gint i);
44 static gint jump_button_get_n_actions (AtkAction *action);
45 static const gchar * jump_button_get_keybinding (AtkAction *action,
46 gint i);
47
48 static gpointer parent_class = NULL;
49
50 GType
51 ea_jump_button_get_type (void)
52 {
53 static GType type = 0;
54 AtkObjectFactory *factory;
55 GTypeQuery query;
56 GType derived_atk_type;
57
58 if (!type) {
59 static GTypeInfo tinfo = {
60 sizeof (EaJumpButtonClass),
61 (GBaseInitFunc) NULL,
62 (GBaseFinalizeFunc) NULL,
63 (GClassInitFunc) ea_jump_button_class_init,
64 (GClassFinalizeFunc) NULL,
65 /* class_data */ NULL,
66 sizeof (EaJumpButton),
67 /* n_preallocs */ 0,
68 (GInstanceInitFunc) NULL,
69 /* value_table */ NULL
70 };
71
72 static const GInterfaceInfo atk_action_info = {
73 (GInterfaceInitFunc) atk_action_interface_init,
74 (GInterfaceFinalizeFunc) NULL,
75 NULL
76 };
77
78 /*
79 * Figure out the size of the class and instance
80 * we are run-time deriving from (atk object for
81 * GNOME_TYPE_CANVAS_ITEM, in this case)
82 */
83
84 factory = atk_registry_get_factory (
85 atk_get_default_registry (), GNOME_TYPE_CANVAS_ITEM);
86 derived_atk_type =
87 atk_object_factory_get_accessible_type (factory);
88 g_type_query (derived_atk_type, &query);
89
90 tinfo.class_size = query.class_size;
91 tinfo.instance_size = query.instance_size;
92
93 /* we inherit the component and other
94 * interfaces from GNOME_TYPE_CANVAS_ITEM */
95 type = g_type_register_static (
96 derived_atk_type, "EaJumpButton", &tinfo, 0);
97
98 g_type_add_interface_static (
99 type, ATK_TYPE_ACTION, &atk_action_info);
100 }
101
102 return type;
103 }
104
105 static void
106 ea_jump_button_class_init (EaJumpButtonClass *klass)
107 {
108 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
109
110 parent_class = g_type_class_peek_parent (klass);
111
112 class->get_name = ea_jump_button_get_name;
113 class->get_description = ea_jump_button_get_description;
114 }
115
116 AtkObject *
117 ea_jump_button_new (GObject *obj)
118 {
119 AtkObject *atk_obj = NULL;
120 GObject *target_obj;
121
122 g_return_val_if_fail (GNOME_IS_CANVAS_ITEM (obj), NULL);
123
124 target_obj = obj;
125 atk_obj = g_object_get_data (target_obj, "accessible-object");
126
127 if (!atk_obj) {
128 static AtkRole event_role = ATK_ROLE_INVALID;
129 atk_obj = ATK_OBJECT (
130 g_object_new (EA_TYPE_JUMP_BUTTON, NULL));
131 atk_object_initialize (atk_obj, target_obj);
132 if (event_role == ATK_ROLE_INVALID)
133 event_role = atk_role_register ("Jump Button");
134 atk_obj->role = event_role;
135 }
136
137 /* The registered factory for GNOME_TYPE_CANVAS_ITEM cannot create
138 * an EaJumpbutton, we should save the EaJumpbutton object in it. */
139 g_object_set_data (obj, "accessible-object", atk_obj);
140
141 return atk_obj;
142 }
143
144 static const gchar *
145 ea_jump_button_get_name (AtkObject *accessible)
146 {
147 g_return_val_if_fail (EA_IS_JUMP_BUTTON (accessible), NULL);
148
149 if (accessible->name)
150 return accessible->name;
151 return _("Jump button");
152 }
153
154 static const gchar *
155 ea_jump_button_get_description (AtkObject *accessible)
156 {
157 if (accessible->description)
158 return accessible->description;
159
160 return _("Click here, you can find more events.");
161 }
162
163 static void
164 atk_action_interface_init (AtkActionIface *iface)
165 {
166 g_return_if_fail (iface != NULL);
167
168 iface->do_action = jump_button_do_action;
169 iface->get_n_actions = jump_button_get_n_actions;
170 iface->get_keybinding = jump_button_get_keybinding;
171 }
172
173 static gboolean
174 jump_button_do_action (AtkAction *action,
175 gint i)
176 {
177 gboolean return_value = TRUE;
178 AtkGObjectAccessible *atk_gobj;
179 GObject *g_obj;
180 GnomeCanvasItem *item;
181 ECalendarView *cal_view;
182 EWeekView *week_view;
183
184 atk_gobj = ATK_GOBJECT_ACCESSIBLE (action);
185 g_obj = atk_gobject_accessible_get_object (atk_gobj);
186 if (!g_obj)
187 return FALSE;
188
189 item = GNOME_CANVAS_ITEM (g_obj);
190 cal_view = ea_calendar_helpers_get_cal_view_from (GNOME_CANVAS_ITEM (item));
191 week_view = E_WEEK_VIEW (cal_view);
192
193 switch (i)
194 {
195 case 0:
196 e_week_view_jump_to_button_item (week_view, GNOME_CANVAS_ITEM (item));
197 break;
198 default:
199 return_value = FALSE;
200 break;
201 }
202 return return_value;
203 }
204
205 static gint
206 jump_button_get_n_actions (AtkAction *action)
207 {
208 return 1;
209 }
210
211 static const gchar *
212 jump_button_get_keybinding (AtkAction *action,
213 gint i)
214 {
215 const gchar *return_value = NULL;
216
217 switch (i)
218 {
219 case 0:
220 {
221 return_value = "space or enter";
222 break;
223 }
224 default:
225 break;
226 }
227 return return_value;
228 }