trunk/src/list.c

/*
 * Copyright (C) 2008 Till Harbaum <till@harbaum.org>.
 *
 * This file is part of OSM2Go.
 *
 * OSM2Go is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OSM2Go is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OSM2Go.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * list.c - generic implementation of a list style widget:
 *          
 * +---------+-----------+
 * | Key     | Key       |
 * +---------+-----------+
 * | Test1    Test2     ^|
 * | Test3    Test4     #|
 * |                    ||
 * |                    v|
 * +---------------------+
 * ( Add )( Edit )(Remove)
 */

#include "appdata.h"

#include <stdarg.h>

static const char *list_button_id_to_name(list_button_t id) {
  const char *names[] = { "btn_new", "btn_edit", "btn_remove",
                          "btn_user0", "btn_user1", "btn_user2" };
  g_assert(id < 6);
  return names[id];
}

GtkWidget *list_get_view(GtkWidget *list) {
  return g_object_get_data(G_OBJECT(list), "view");
}

/* a list supports up to three user defined buttons besides */
/* add, edit and remove */
void list_set_user_buttons(GtkWidget *list, ...) {
  va_list ap;
  GtkWidget *table = g_object_get_data(G_OBJECT(list), "table");
  void *data = g_object_get_data(G_OBJECT(list), "userdata");

  /* make space for user buttons */
  gtk_table_resize(GTK_TABLE(table), 2, 3);

  va_start(ap, list);
  list_button_t id = va_arg(ap, list_button_t);
  while(id) {
    char *label = va_arg(ap, char*);
    GCallback cb = va_arg(ap, GCallback);

    GtkWidget *button = gtk_button_new_with_label(label);
    gtk_table_attach_defaults(GTK_TABLE(table), button, 
              id-LIST_BUTTON_USER0, id-LIST_BUTTON_USER0+1, 1, 2);
    g_object_set_data(G_OBJECT(list), list_button_id_to_name(id), button);
    gtk_signal_connect(GTK_OBJECT(button), "clicked", 
                       GTK_SIGNAL_FUNC(cb), data);

    id = va_arg(ap, list_button_t);
  }

  va_end(ap);
}

void list_set_columns(GtkWidget *list, ...) {
  va_list ap;
  GtkWidget *view = g_object_get_data(G_OBJECT(list), "view");

  va_start(ap, list);
  char *name = va_arg(ap, char*);
  while(name) {
    int hlkey = -1, key = va_arg(ap, int);
    int flags = va_arg(ap, int);

    if(flags & LIST_FLAG_CAN_HIGHLIGHT)
      hlkey = va_arg(ap, int);

    GtkTreeViewColumn *column = NULL;

    if(flags & LIST_FLAG_TOGGLE) {
      GCallback cb = va_arg(ap, GCallback);
      gpointer data = va_arg(ap, gpointer);

      GtkCellRenderer *renderer = gtk_cell_renderer_toggle_new();
      column = gtk_tree_view_column_new_with_attributes(
                           name, renderer, "active", key, NULL);
      g_signal_connect(renderer, "toggled", cb, data);
    
    } else if(flags & LIST_FLAG_STOCK_ICON) {
      GtkCellRenderer *pixbuf_renderer = gtk_cell_renderer_pixbuf_new();
      column = gtk_tree_view_column_new_with_attributes(name,
                  pixbuf_renderer, "stock_id", key, NULL);
    } else {
      GtkCellRenderer *renderer = gtk_cell_renderer_text_new();

      if(flags & LIST_FLAG_CAN_HIGHLIGHT)
        g_object_set(renderer, "background", "red", NULL );

      if(flags & LIST_FLAG_ELLIPSIZE)
        g_object_set(renderer, "ellipsize", PANGO_ELLIPSIZE_END, NULL);

      column = gtk_tree_view_column_new_with_attributes(name, renderer, 
        "text", key, 
         (flags & LIST_FLAG_CAN_HIGHLIGHT)?"background-set":NULL, hlkey,
        NULL);

      gtk_tree_view_column_set_expand(column, flags & (LIST_FLAG_EXPAND | LIST_FLAG_ELLIPSIZE));
    }

   gtk_tree_view_column_set_sort_column_id(column, key);
   gtk_tree_view_insert_column(GTK_TREE_VIEW(view), column, -1);

    name = va_arg(ap, char*);
  }

  va_end(ap);
}

static GtkWidget *list_button_get(GtkWidget *list, list_button_t id) {
  return g_object_get_data(G_OBJECT(list), list_button_id_to_name(id));
}

void list_button_connect(GtkWidget *list, list_button_t id, 
                         GCallback cb, gpointer data) {
  GtkWidget *but = list_button_get(list, id);
  gtk_signal_connect(GTK_OBJECT(but), "clicked", GTK_SIGNAL_FUNC(cb), data);
}

/* put a custom widget into one of the button slots */
void list_set_custom_user_button(GtkWidget *list, list_button_t id, 
                                 GtkWidget *widget) {
  GtkWidget *table = g_object_get_data(G_OBJECT(list), "table");
  g_assert((id >= 3) && (id < 6));

  /* make space for user buttons */
  gtk_table_resize(GTK_TABLE(table), 2, 3);
  
  gtk_table_attach_defaults(GTK_TABLE(table), widget,
                    id-LIST_BUTTON_USER0, id-LIST_BUTTON_USER0+1, 1, 2);
  g_object_set_data(G_OBJECT(list), list_button_id_to_name(id), widget);
}

GtkTreeSelection *list_get_selection(GtkWidget *list) {
  GtkWidget *view = g_object_get_data(G_OBJECT(list), "view");
  return gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
}

void list_button_enable(GtkWidget *list, list_button_t id, gboolean enable) {
  GtkWidget *but = list_button_get(list, id);
  if(but) gtk_widget_set_sensitive(but, enable);
}

void list_set_store(GtkWidget *list, GtkListStore *store) {
  gtk_tree_view_set_model(
          GTK_TREE_VIEW(g_object_get_data(G_OBJECT(list), "view")), 
          GTK_TREE_MODEL(store));
}

void list_set_selection_function(GtkWidget *list, GtkTreeSelectionFunc func,
                                 gpointer data) {
  GtkWidget *view = g_object_get_data(G_OBJECT(list), "view");
  gtk_tree_selection_set_select_function(
         gtk_tree_view_get_selection(GTK_TREE_VIEW(view)), 
         func, data, NULL);
}

/* default selection function enables edit and remove if a row is being */
/* selected */
static gboolean
list_selection_function(GtkTreeSelection *selection, GtkTreeModel *model,
                        GtkTreePath *path, gboolean path_currently_selected,
                        gpointer list) {
  GtkTreeIter iter;

  if(gtk_tree_model_get_iter(model, &iter, path)) {
    g_assert(gtk_tree_path_get_depth(path) == 1);

    list_button_enable(GTK_WIDGET(list), LIST_BUTTON_REMOVE, TRUE);
    list_button_enable(GTK_WIDGET(list), LIST_BUTTON_EDIT, TRUE);
  }
  
  return TRUE; /* allow selection state to change */
}

void list_set_static_buttons(GtkWidget *list, GCallback cb_new, 
             GCallback cb_edit, GCallback cb_remove, gpointer data) {
  GtkWidget *table = g_object_get_data(G_OBJECT(list), "table");
  g_object_set_data(G_OBJECT(list), "userdata", data);

  /* add the three default buttons, but keep the disabled for now */
  GtkWidget *button = NULL;
  if(cb_new) {
    button = gtk_button_new_with_label(_("Add..."));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 0, 1, 0, 1);
    gtk_widget_set_sensitive(button, TRUE);
    g_object_set_data(G_OBJECT(list), "btn_new", button);
    gtk_signal_connect(GTK_OBJECT(button), "clicked", 
                       GTK_SIGNAL_FUNC(cb_new), data);
  }

  if(cb_edit) {
    button = gtk_button_new_with_label(_("Edit..."));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 1, 2, 0, 1);
    gtk_widget_set_sensitive(button, FALSE);
    g_object_set_data(G_OBJECT(list), "btn_edit", button);
    gtk_signal_connect(GTK_OBJECT(button), "clicked", 
                       GTK_SIGNAL_FUNC(cb_edit), data);
  }

  if(cb_remove) {
    button = gtk_button_new_with_label(_("Remove"));
    gtk_table_attach_defaults(GTK_TABLE(table), button, 2, 3, 0, 1);
    gtk_widget_set_sensitive(button, FALSE);
    g_object_set_data(G_OBJECT(list), "btn_remove", button);
    gtk_signal_connect(GTK_OBJECT(button), "clicked", 
                       GTK_SIGNAL_FUNC(cb_remove), data);
  }
}

GtkTreeModel *list_get_model(GtkWidget *list) {
  return gtk_tree_view_get_model(GTK_TREE_VIEW(
       g_object_get_data(G_OBJECT(list), "view")));
}

void list_pre_inplace_edit_tweak (GtkTreeModel *model) {
  // Remove any current sort ordering, leaving items where they are.
  gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(model),
                                       GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID,
                                       GTK_SORT_ASCENDING);
}


/* Refocus a GtkTreeView an item specified by iter, unselecting the current
   selection and optionally highlighting the new one. Typically called after
   making an edit to an item with a covering sub-dialog. */

void list_focus_on(GtkWidget *list, GtkTreeIter *iter, gboolean highlight) {
  GtkTreeView *view = g_object_get_data(G_OBJECT(list), "view");
  GtkTreeModel *model = gtk_tree_view_get_model(view);

  // Handle de/reselection
  GtkTreeSelection *sel = gtk_tree_view_get_selection(view);
  gtk_tree_selection_unselect_all(sel);

  // Scroll to it, since it might now be out of view.
  GtkTreePath *path = gtk_tree_model_get_path(model, iter);
  gtk_tree_view_scroll_to_cell(view, path, NULL, FALSE, 0, 0);
  gtk_tree_path_free(path);
  
  // reselect
  if (highlight)
    gtk_tree_selection_select_iter(sel, iter);
}


/* a generic list widget with "add", "edit" and "remove" buttons as used */
/* for all kinds of lists in osm2go */
#ifdef USE_HILDON
GtkWidget *list_new(gboolean show_headers)
#else
GtkWidget *list_new(void)
#endif
{           
  GtkWidget *vbox = gtk_vbox_new(FALSE,3);
  GtkWidget *view = gtk_tree_view_new();
  g_object_set_data(G_OBJECT(vbox), "view", view);

#ifdef USE_HILDON
  if(show_headers) {
    /* hildon hides these by default */
    gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), TRUE); 
  }
#endif
 
  gtk_tree_selection_set_select_function(
         gtk_tree_view_get_selection(GTK_TREE_VIEW(view)), 
         list_selection_function, vbox, NULL);

  /* put view into a scrolled window */
  GtkWidget *scrolled_window = gtk_scrolled_window_new(NULL, NULL);
  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window), 
                                 GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
  gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled_window), 
                                      GTK_SHADOW_ETCHED_IN);
  gtk_container_add(GTK_CONTAINER(scrolled_window), view);
  gtk_box_pack_start_defaults(GTK_BOX(vbox), scrolled_window);

  /* add button box */
  GtkWidget *table = gtk_table_new(1, 3, TRUE);
  g_object_set_data(G_OBJECT(vbox), "table", table);

  gtk_box_pack_start(GTK_BOX(vbox), table, FALSE, FALSE, 0);

  return vbox;
}

1	/*
2	* Copyright (C) 2008 Till Harbaum <till@harbaum.org>.
3	*
4	* This file is part of OSM2Go.
5	*
6	* OSM2Go is free software: you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation, either version 3 of the License, or
9	* (at your option) any later version.
10	*
11	* OSM2Go is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with OSM2Go. If not, see <http://www.gnu.org/licenses/>.
18	*/
19
20	/*
21	* list.c - generic implementation of a list style widget:
22	*
23	* +---------+-----------+
24	* \| Key \| Key \|
25	* +---------+-----------+
26	* \| Test1 Test2 ^\|
27	* \| Test3 Test4 #\|
28	* \| \|\|
29	* \| v\|
30	* +---------------------+
31	* ( Add )( Edit )(Remove)
32	*/
33
34	#include "appdata.h"
35
36	#include <stdarg.h>
37
38	static const char *list_button_id_to_name(list_button_t id) {
39	const char *names[] = { "btn_new", "btn_edit", "btn_remove",
40	"btn_user0", "btn_user1", "btn_user2" };
41	g_assert(id < 6);
42	return names[id];
43	}
44
45	GtkWidget list_get_view(GtkWidget list) {
46	return g_object_get_data(G_OBJECT(list), "view");
47	}
48
49	/* a list supports up to three user defined buttons besides */
50	/* add, edit and remove */
51	void list_set_user_buttons(GtkWidget *list, ...) {
52	va_list ap;
53	GtkWidget *table = g_object_get_data(G_OBJECT(list), "table");
54	void *data = g_object_get_data(G_OBJECT(list), "userdata");
55
56	/* make space for user buttons */
57	gtk_table_resize(GTK_TABLE(table), 2, 3);
58
59	va_start(ap, list);
60	list_button_t id = va_arg(ap, list_button_t);
61	while(id) {
62	char label = va_arg(ap, char);
63	GCallback cb = va_arg(ap, GCallback);
64
65	GtkWidget *button = gtk_button_new_with_label(label);
66	gtk_table_attach_defaults(GTK_TABLE(table), button,
67	id-LIST_BUTTON_USER0, id-LIST_BUTTON_USER0+1, 1, 2);
68	g_object_set_data(G_OBJECT(list), list_button_id_to_name(id), button);
69	gtk_signal_connect(GTK_OBJECT(button), "clicked",
70	GTK_SIGNAL_FUNC(cb), data);
71
72	id = va_arg(ap, list_button_t);
73	}
74
75	va_end(ap);
76	}
77
78	void list_set_columns(GtkWidget *list, ...) {
79	va_list ap;
80	GtkWidget *view = g_object_get_data(G_OBJECT(list), "view");
81
82	va_start(ap, list);
83	char name = va_arg(ap, char);
84	while(name) {
85	int hlkey = -1, key = va_arg(ap, int);
86	int flags = va_arg(ap, int);
87
88	if(flags & LIST_FLAG_CAN_HIGHLIGHT)
89	hlkey = va_arg(ap, int);
90
91	GtkTreeViewColumn *column = NULL;
92
93	if(flags & LIST_FLAG_TOGGLE) {
94	GCallback cb = va_arg(ap, GCallback);
95	gpointer data = va_arg(ap, gpointer);
96
97	GtkCellRenderer *renderer = gtk_cell_renderer_toggle_new();
98	column = gtk_tree_view_column_new_with_attributes(
99	name, renderer, "active", key, NULL);
100	g_signal_connect(renderer, "toggled", cb, data);
101
102	} else if(flags & LIST_FLAG_STOCK_ICON) {
103	GtkCellRenderer *pixbuf_renderer = gtk_cell_renderer_pixbuf_new();
104	column = gtk_tree_view_column_new_with_attributes(name,
105	pixbuf_renderer, "stock_id", key, NULL);
106	} else {
107	GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
108
109	if(flags & LIST_FLAG_CAN_HIGHLIGHT)
110	g_object_set(renderer, "background", "red", NULL );
111
112	if(flags & LIST_FLAG_ELLIPSIZE)
113	g_object_set(renderer, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
114
115	column = gtk_tree_view_column_new_with_attributes(name, renderer,
116	"text", key,
117	(flags & LIST_FLAG_CAN_HIGHLIGHT)?"background-set":NULL, hlkey,
118	NULL);
119
120	gtk_tree_view_column_set_expand(column, flags & (LIST_FLAG_EXPAND \| LIST_FLAG_ELLIPSIZE));
121	}
122
123	gtk_tree_view_column_set_sort_column_id(column, key);
124	gtk_tree_view_insert_column(GTK_TREE_VIEW(view), column, -1);
125
126	name = va_arg(ap, char*);
127	}
128
129	va_end(ap);
130	}
131
132	static GtkWidget list_button_get(GtkWidget list, list_button_t id) {
133	return g_object_get_data(G_OBJECT(list), list_button_id_to_name(id));
134	}
135
136	void list_button_connect(GtkWidget *list, list_button_t id,
137	GCallback cb, gpointer data) {
138	GtkWidget *but = list_button_get(list, id);
139	gtk_signal_connect(GTK_OBJECT(but), "clicked", GTK_SIGNAL_FUNC(cb), data);
140	}
141
142	/* put a custom widget into one of the button slots */
143	void list_set_custom_user_button(GtkWidget *list, list_button_t id,
144	GtkWidget *widget) {
145	GtkWidget *table = g_object_get_data(G_OBJECT(list), "table");
146	g_assert((id >= 3) && (id < 6));
147
148	/* make space for user buttons */
149	gtk_table_resize(GTK_TABLE(table), 2, 3);
150
151	gtk_table_attach_defaults(GTK_TABLE(table), widget,
152	id-LIST_BUTTON_USER0, id-LIST_BUTTON_USER0+1, 1, 2);
153	g_object_set_data(G_OBJECT(list), list_button_id_to_name(id), widget);
154	}
155
156	GtkTreeSelection list_get_selection(GtkWidget list) {
157	GtkWidget *view = g_object_get_data(G_OBJECT(list), "view");
158	return gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
159	}
160
161	void list_button_enable(GtkWidget *list, list_button_t id, gboolean enable) {
162	GtkWidget *but = list_button_get(list, id);
163	if(but) gtk_widget_set_sensitive(but, enable);
164	}
165
166	void list_set_store(GtkWidget list, GtkListStore store) {
167	gtk_tree_view_set_model(
168	GTK_TREE_VIEW(g_object_get_data(G_OBJECT(list), "view")),
169	GTK_TREE_MODEL(store));
170	}
171
172	void list_set_selection_function(GtkWidget *list, GtkTreeSelectionFunc func,
173	gpointer data) {
174	GtkWidget *view = g_object_get_data(G_OBJECT(list), "view");
175	gtk_tree_selection_set_select_function(
176	gtk_tree_view_get_selection(GTK_TREE_VIEW(view)),
177	func, data, NULL);
178	}
179
180	/* default selection function enables edit and remove if a row is being */
181	/* selected */
182	static gboolean
183	list_selection_function(GtkTreeSelection selection, GtkTreeModel model,
184	GtkTreePath *path, gboolean path_currently_selected,
185	gpointer list) {
186	GtkTreeIter iter;
187
188	if(gtk_tree_model_get_iter(model, &iter, path)) {
189	g_assert(gtk_tree_path_get_depth(path) == 1);
190
191	list_button_enable(GTK_WIDGET(list), LIST_BUTTON_REMOVE, TRUE);
192	list_button_enable(GTK_WIDGET(list), LIST_BUTTON_EDIT, TRUE);
193	}
194
195	return TRUE; /* allow selection state to change */
196	}
197
198	void list_set_static_buttons(GtkWidget *list, GCallback cb_new,
199	GCallback cb_edit, GCallback cb_remove, gpointer data) {
200	GtkWidget *table = g_object_get_data(G_OBJECT(list), "table");
201	g_object_set_data(G_OBJECT(list), "userdata", data);
202
203	/* add the three default buttons, but keep the disabled for now */
204	GtkWidget *button = NULL;
205	if(cb_new) {
206	button = gtk_button_new_with_label(_("Add..."));
207	gtk_table_attach_defaults(GTK_TABLE(table), button, 0, 1, 0, 1);
208	gtk_widget_set_sensitive(button, TRUE);
209	g_object_set_data(G_OBJECT(list), "btn_new", button);
210	gtk_signal_connect(GTK_OBJECT(button), "clicked",
211	GTK_SIGNAL_FUNC(cb_new), data);
212	}
213
214	if(cb_edit) {
215	button = gtk_button_new_with_label(_("Edit..."));
216	gtk_table_attach_defaults(GTK_TABLE(table), button, 1, 2, 0, 1);
217	gtk_widget_set_sensitive(button, FALSE);
218	g_object_set_data(G_OBJECT(list), "btn_edit", button);
219	gtk_signal_connect(GTK_OBJECT(button), "clicked",
220	GTK_SIGNAL_FUNC(cb_edit), data);
221	}
222
223	if(cb_remove) {
224	button = gtk_button_new_with_label(_("Remove"));
225	gtk_table_attach_defaults(GTK_TABLE(table), button, 2, 3, 0, 1);
226	gtk_widget_set_sensitive(button, FALSE);
227	g_object_set_data(G_OBJECT(list), "btn_remove", button);
228	gtk_signal_connect(GTK_OBJECT(button), "clicked",
229	GTK_SIGNAL_FUNC(cb_remove), data);
230	}
231	}
232
233	GtkTreeModel list_get_model(GtkWidget list) {
234	return gtk_tree_view_get_model(GTK_TREE_VIEW(
235	g_object_get_data(G_OBJECT(list), "view")));
236	}
237
238	void list_pre_inplace_edit_tweak (GtkTreeModel *model) {
239	// Remove any current sort ordering, leaving items where they are.
240	gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(model),
241	GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID,
242	GTK_SORT_ASCENDING);
243	}
244
245
246	/* Refocus a GtkTreeView an item specified by iter, unselecting the current
247	selection and optionally highlighting the new one. Typically called after
248	making an edit to an item with a covering sub-dialog. */
249
250	void list_focus_on(GtkWidget list, GtkTreeIter iter, gboolean highlight) {
251	GtkTreeView *view = g_object_get_data(G_OBJECT(list), "view");
252	GtkTreeModel *model = gtk_tree_view_get_model(view);
253
254	// Handle de/reselection
255	GtkTreeSelection *sel = gtk_tree_view_get_selection(view);
256	gtk_tree_selection_unselect_all(sel);
257
258	// Scroll to it, since it might now be out of view.
259	GtkTreePath *path = gtk_tree_model_get_path(model, iter);
260	gtk_tree_view_scroll_to_cell(view, path, NULL, FALSE, 0, 0);
261	gtk_tree_path_free(path);
262
263	// reselect
264	if (highlight)
265	gtk_tree_selection_select_iter(sel, iter);
266	}
267
268
269
270	/* a generic list widget with "add", "edit" and "remove" buttons as used */
271	/* for all kinds of lists in osm2go */
272	#ifdef USE_HILDON
273	GtkWidget *list_new(gboolean show_headers)
274	#else
275	GtkWidget *list_new(void)
276	#endif
277	{
278	GtkWidget *vbox = gtk_vbox_new(FALSE,3);
279	GtkWidget *view = gtk_tree_view_new();
280	g_object_set_data(G_OBJECT(vbox), "view", view);
281
282	#ifdef USE_HILDON
283	if(show_headers) {
284	/* hildon hides these by default */
285	gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), TRUE);
286	}
287	#endif
288
289	gtk_tree_selection_set_select_function(
290	gtk_tree_view_get_selection(GTK_TREE_VIEW(view)),
291	list_selection_function, vbox, NULL);
292
293	/* put view into a scrolled window */
294	GtkWidget *scrolled_window = gtk_scrolled_window_new(NULL, NULL);
295	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
296	GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
297	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled_window),
298	GTK_SHADOW_ETCHED_IN);
299	gtk_container_add(GTK_CONTAINER(scrolled_window), view);
300	gtk_box_pack_start_defaults(GTK_BOX(vbox), scrolled_window);
301
302	/* add button box */
303	GtkWidget *table = gtk_table_new(1, 3, TRUE);
304	g_object_set_data(G_OBJECT(vbox), "table", table);
305
306	gtk_box_pack_start(GTK_BOX(vbox), table, FALSE, FALSE, 0);
307
308	return vbox;
309	}
310