1 /* PSPPIRE - a graphical user interface for PSPP.
2 Copyright (C) 2007 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 This widget is a GtkBox which looks roughly like:
21 +-----------------------------+
22 |+------------+ +----------+ |
32 |+------------+ +----------+ |
33 +-----------------------------+
39 #include "psppire-acr.h"
41 static void psppire_acr_init (PsppireAcr *);
44 psppire_acr_get_type (void)
46 static GType acr_type = 0;
50 static const GTypeInfo acr_info =
52 sizeof (PsppireAcrClass),
54 NULL, /* base_finalize */
55 NULL, /* class_init */
56 NULL, /* class_finalize */
57 NULL, /* class_data */
60 (GInstanceInitFunc) psppire_acr_init,
63 acr_type = g_type_register_static (GTK_TYPE_HBOX, "PsppireAcr",
71 static gboolean row_is_selected (const PsppireAcr *acr);
75 value_from_entry (gint col, GValue *val, gpointer data)
77 GtkEntry *entry = data;
78 const gchar *text = gtk_entry_get_text (entry);
79 gdouble x = g_strtod (text, 0);
81 g_value_init (val, G_TYPE_DOUBLE);
82 g_value_set_double (val, x);
88 /* Returns true, if there's text in the entry */
90 entry_not_empty (gpointer data)
92 GtkEntry *entry = data;
94 const char *text = gtk_entry_get_text (entry);
96 return !g_str_equal (text, "");
101 clear_entry (gpointer data)
103 GtkEntry *entry = data;
104 gtk_entry_set_text (entry, "");
109 on_entry_change (GtkEntry *entry, PsppireAcr *acr)
111 gtk_widget_set_sensitive (acr->add_button, acr->enabled (entry));
113 gtk_widget_set_sensitive (acr->change_button, acr->enabled (entry)
114 && row_is_selected (acr));
118 psppire_acr_set_entry (PsppireAcr *acr, GtkEntry *entry)
120 acr->get_value = value_from_entry;
121 acr->get_value_data = entry;
122 acr->enabled = entry_not_empty;
123 acr->enabled_data = entry;
124 acr->update = clear_entry;
125 acr->update_data = entry;
127 g_signal_connect (entry, "changed", G_CALLBACK (on_entry_change), acr);
131 /* Callback for when the Add button is clicked.
132 It appends an item to the list. */
134 on_add_button_clicked (PsppireAcr *acr)
138 gtk_list_store_append (acr->list_store, &iter);
141 i < gtk_tree_model_get_n_columns (GTK_TREE_MODEL (acr->list_store));
145 if ( ! acr->get_value (i, &value, acr->get_value_data) )
148 gtk_list_store_set_value (acr->list_store, &iter,
150 g_value_unset (&value);
153 if (acr->update) acr->update (acr->update_data);
157 /* Callback for when the Changed button is clicked.
158 It replaces the currently selected entry. */
160 on_change_button_clicked (PsppireAcr *acr)
163 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
166 gtk_tree_selection_get_selected_rows (acr->selection,
169 GtkTreePath *path = l->data;
173 gtk_tree_model_get_iter (model, &iter, path);
176 i < gtk_tree_model_get_n_columns (GTK_TREE_MODEL (acr->list_store));
180 if ( ! acr->get_value (i, &value, acr->get_value_data) )
183 gtk_list_store_set_value (acr->list_store, &iter,
185 g_value_unset (&value);
188 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
191 if ( acr->update) acr->update (acr->update_data);
195 /* Callback for when the remove button is clicked.
196 It deletes the currently selected entry. */
198 on_remove_button_clicked (PsppireAcr *acr)
200 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
203 gtk_tree_selection_get_selected_rows (acr->selection,
206 GtkTreePath *path = l->data;
210 gtk_tree_model_get_iter (model, &iter, path);
212 gtk_list_store_remove (acr->list_store, &iter);
214 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
218 /* Returns true if there is a row currently selected.
221 row_is_selected (const PsppireAcr *acr)
224 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
225 GList *l = gtk_tree_selection_get_selected_rows (acr->selection,
228 result = (l != NULL);
230 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
237 /* Callback which occurs when an item in the treeview
240 on_select (GtkTreeSelection *selection, gpointer data)
242 PsppireAcr *acr = data;
244 gtk_widget_set_sensitive (acr->remove_button, row_is_selected (acr));
246 gtk_widget_set_sensitive (acr->change_button,
247 row_is_selected (acr)
253 psppire_acr_set_enabled (PsppireAcr *acr, gboolean status)
256 gtk_widget_set_sensitive (acr->add_button, status);
258 gtk_widget_set_sensitive (acr->change_button, status
259 && row_is_selected (acr));
264 psppire_acr_init (PsppireAcr *acr)
266 GtkWidget *bb = gtk_vbutton_box_new ();
268 GtkWidget *sw = gtk_scrolled_window_new (NULL, NULL);
270 acr->tv = GTK_TREE_VIEW (gtk_tree_view_new ());
272 acr->add_button = gtk_button_new_from_stock (GTK_STOCK_ADD);
273 acr->change_button = gtk_button_new_from_stock (GTK_STOCK_EDIT);
274 acr->remove_button = gtk_button_new_from_stock (GTK_STOCK_REMOVE);
276 acr->get_value = NULL;
277 acr->get_value_data = NULL;
281 gtk_widget_set_sensitive (acr->change_button, FALSE);
282 gtk_widget_set_sensitive (acr->remove_button, FALSE);
283 gtk_widget_set_sensitive (acr->add_button, FALSE);
285 gtk_box_pack_start_defaults (GTK_BOX (bb), acr->add_button);
286 gtk_box_pack_start_defaults (GTK_BOX (bb), acr->change_button);
287 gtk_box_pack_start_defaults (GTK_BOX (bb), acr->remove_button);
289 gtk_box_pack_start (GTK_BOX (acr), bb, FALSE, TRUE, 5);
292 "hscrollbar-policy", GTK_POLICY_NEVER,
293 "vscrollbar-policy", GTK_POLICY_AUTOMATIC,
294 "shadow-type", GTK_SHADOW_ETCHED_IN,
297 gtk_container_add (GTK_CONTAINER (sw), GTK_WIDGET (acr->tv));
299 gtk_box_pack_start (GTK_BOX (acr), sw, TRUE, TRUE, 5);
302 g_signal_connect_swapped (acr->add_button, "clicked",
303 G_CALLBACK (on_add_button_clicked), acr);
304 g_signal_connect_swapped (acr->change_button, "clicked",
305 G_CALLBACK (on_change_button_clicked), acr);
306 g_signal_connect_swapped (acr->remove_button, "clicked",
307 G_CALLBACK (on_remove_button_clicked), acr);
309 gtk_widget_show_all (bb);
312 g_object_set (acr->tv, "headers-visible", FALSE, NULL);
314 acr->list_store = NULL;
316 psppire_acr_set_model (acr, acr->list_store);
318 acr->selection = gtk_tree_view_get_selection (acr->tv);
320 g_signal_connect (acr->selection, "changed", G_CALLBACK (on_select), acr);
322 gtk_widget_set_sensitive (GTK_WIDGET (acr), FALSE);
324 gtk_widget_show_all (sw);
327 GtkCellRenderer *renderer = gtk_cell_renderer_text_new ();
328 GtkTreeViewColumn *column =
329 gtk_tree_view_column_new_with_attributes ("value",
334 gtk_tree_view_append_column (acr->tv, column);
341 psppire_acr_new (void)
343 return GTK_WIDGET (g_object_new (psppire_acr_get_type (), NULL));
348 /* Set the widget's treemodel */
350 psppire_acr_set_model (PsppireAcr *acr, GtkListStore *liststore)
352 acr->list_store = liststore;
354 gtk_tree_view_set_model (GTK_TREE_VIEW (acr->tv),
355 GTK_TREE_MODEL (liststore));
357 gtk_widget_set_sensitive (GTK_WIDGET (acr), liststore != NULL);
362 psppire_acr_set_enable_func (PsppireAcr *acr, EnabledFunc func, gpointer p)
365 acr->enabled_data = p;
369 psppire_acr_set_get_value_func (PsppireAcr *acr,
370 GetValueFunc getvalue, gpointer data)
372 acr->get_value_data = data;
373 acr->get_value = getvalue;