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 +-----------------------------+
40 #include "psppire-acr.h"
43 static void psppire_acr_init (PsppireAcr *);
46 psppire_acr_get_type (void)
48 static GType acr_type = 0;
52 static const GTypeInfo acr_info =
54 sizeof (PsppireAcrClass),
56 NULL, /* base_finalize */
57 NULL, /* class_init */
58 NULL, /* class_finalize */
59 NULL, /* class_data */
62 (GInstanceInitFunc) psppire_acr_init,
65 acr_type = g_type_register_static (GTK_TYPE_HBOX, "PsppireAcr",
73 static gboolean row_is_selected (const PsppireAcr *acr);
77 value_from_entry (gint col, GValue *val, gpointer data)
79 GtkEntry *entry = data;
80 const gchar *text = gtk_entry_get_text (entry);
81 gdouble x = g_strtod (text, 0);
83 g_value_init (val, G_TYPE_DOUBLE);
84 g_value_set_double (val, x);
90 /* Returns true, if there's text in the entry */
92 entry_not_empty (gpointer data)
94 GtkEntry *entry = data;
96 const char *text = gtk_entry_get_text (entry);
98 return !g_str_equal (text, "");
103 clear_entry (gpointer data)
105 GtkEntry *entry = data;
106 gtk_entry_set_text (entry, "");
111 on_entry_change (GtkEntry *entry, PsppireAcr *acr)
113 gtk_widget_set_sensitive (acr->add_button, acr->enabled (entry));
115 gtk_widget_set_sensitive (acr->change_button, acr->enabled (entry)
116 && row_is_selected (acr));
120 psppire_acr_set_entry (PsppireAcr *acr, GtkEntry *entry)
122 acr->get_value = value_from_entry;
123 acr->get_value_data = entry;
124 acr->enabled = entry_not_empty;
125 acr->enabled_data = entry;
126 acr->update = clear_entry;
127 acr->update_data = entry;
129 g_signal_connect (entry, "changed", G_CALLBACK (on_entry_change), acr);
133 /* Callback for when the Add button is clicked.
134 It appends an item to the list. */
136 on_add_button_clicked (PsppireAcr *acr)
140 gtk_list_store_append (acr->list_store, &iter);
143 i < gtk_tree_model_get_n_columns (GTK_TREE_MODEL (acr->list_store));
147 if ( ! acr->get_value (i, &value, acr->get_value_data) )
150 gtk_list_store_set_value (acr->list_store, &iter,
152 g_value_unset (&value);
155 if (acr->update) acr->update (acr->update_data);
159 /* Callback for when the Changed button is clicked.
160 It replaces the currently selected entry. */
162 on_change_button_clicked (PsppireAcr *acr)
165 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
168 gtk_tree_selection_get_selected_rows (acr->selection,
171 GtkTreePath *path = l->data;
175 gtk_tree_model_get_iter (model, &iter, path);
178 i < gtk_tree_model_get_n_columns (GTK_TREE_MODEL (acr->list_store));
182 if ( ! acr->get_value (i, &value, acr->get_value_data) )
185 gtk_list_store_set_value (acr->list_store, &iter,
187 g_value_unset (&value);
190 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
193 if ( acr->update) acr->update (acr->update_data);
197 /* Callback for when the remove button is clicked.
198 It deletes the currently selected entry. */
200 on_remove_button_clicked (PsppireAcr *acr)
202 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
205 gtk_tree_selection_get_selected_rows (acr->selection,
208 GtkTreePath *path = l->data;
212 gtk_tree_model_get_iter (model, &iter, path);
214 gtk_list_store_remove (acr->list_store, &iter);
216 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
220 /* Returns true if there is a row currently selected.
223 row_is_selected (const PsppireAcr *acr)
226 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
227 GList *l = gtk_tree_selection_get_selected_rows (acr->selection,
230 result = (l != NULL);
232 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
239 /* Callback which occurs when an item in the treeview
242 on_select (GtkTreeSelection *selection, gpointer data)
244 PsppireAcr *acr = data;
246 gtk_widget_set_sensitive (acr->remove_button, row_is_selected (acr));
248 gtk_widget_set_sensitive (acr->change_button,
249 row_is_selected (acr)
255 psppire_acr_set_enabled (PsppireAcr *acr, gboolean status)
258 gtk_widget_set_sensitive (acr->add_button, status);
260 gtk_widget_set_sensitive (acr->change_button, status
261 && row_is_selected (acr));
266 psppire_acr_init (PsppireAcr *acr)
268 GtkWidget *bb = gtk_vbutton_box_new ();
270 GtkWidget *sw = gtk_scrolled_window_new (NULL, NULL);
272 acr->tv = GTK_TREE_VIEW (gtk_tree_view_new ());
274 acr->add_button = gtk_button_new_from_stock (GTK_STOCK_ADD);
275 acr->change_button = gtk_button_new_from_stock (GTK_STOCK_EDIT);
276 acr->remove_button = gtk_button_new_from_stock (GTK_STOCK_REMOVE);
278 acr->get_value = NULL;
279 acr->get_value_data = NULL;
283 gtk_widget_set_sensitive (acr->change_button, FALSE);
284 gtk_widget_set_sensitive (acr->remove_button, FALSE);
285 gtk_widget_set_sensitive (acr->add_button, FALSE);
287 psppire_box_pack_start_defaults (GTK_BOX (bb), acr->add_button);
288 psppire_box_pack_start_defaults (GTK_BOX (bb), acr->change_button);
289 psppire_box_pack_start_defaults (GTK_BOX (bb), acr->remove_button);
291 gtk_box_pack_start (GTK_BOX (acr), bb, FALSE, TRUE, 5);
294 "hscrollbar-policy", GTK_POLICY_NEVER,
295 "vscrollbar-policy", GTK_POLICY_AUTOMATIC,
296 "shadow-type", GTK_SHADOW_ETCHED_IN,
299 gtk_container_add (GTK_CONTAINER (sw), GTK_WIDGET (acr->tv));
301 gtk_box_pack_start (GTK_BOX (acr), sw, TRUE, TRUE, 5);
304 g_signal_connect_swapped (acr->add_button, "clicked",
305 G_CALLBACK (on_add_button_clicked), acr);
306 g_signal_connect_swapped (acr->change_button, "clicked",
307 G_CALLBACK (on_change_button_clicked), acr);
308 g_signal_connect_swapped (acr->remove_button, "clicked",
309 G_CALLBACK (on_remove_button_clicked), acr);
311 gtk_widget_show_all (bb);
314 g_object_set (acr->tv, "headers-visible", FALSE, NULL);
316 acr->list_store = NULL;
318 psppire_acr_set_model (acr, acr->list_store);
320 acr->selection = gtk_tree_view_get_selection (acr->tv);
322 g_signal_connect (acr->selection, "changed", G_CALLBACK (on_select), acr);
324 gtk_widget_set_sensitive (GTK_WIDGET (acr), FALSE);
326 gtk_widget_show_all (sw);
329 GtkCellRenderer *renderer = gtk_cell_renderer_text_new ();
330 GtkTreeViewColumn *column =
331 gtk_tree_view_column_new_with_attributes ("value",
336 gtk_tree_view_append_column (acr->tv, column);
343 psppire_acr_new (void)
345 return GTK_WIDGET (g_object_new (psppire_acr_get_type (), NULL));
350 /* Set the widget's treemodel */
352 psppire_acr_set_model (PsppireAcr *acr, GtkListStore *liststore)
354 acr->list_store = liststore;
356 gtk_tree_view_set_model (GTK_TREE_VIEW (acr->tv),
357 GTK_TREE_MODEL (liststore));
359 gtk_widget_set_sensitive (GTK_WIDGET (acr), liststore != NULL);
364 psppire_acr_set_enable_func (PsppireAcr *acr, EnabledFunc func, gpointer p)
367 acr->enabled_data = p;
371 psppire_acr_set_get_value_func (PsppireAcr *acr,
372 GetValueFunc getvalue, gpointer data)
374 acr->get_value_data = data;
375 acr->get_value = getvalue;