1 /* PSPPIRE - a graphical user interface for PSPP.
2 Copyright (C) 2007, 2012 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 G_DEFINE_TYPE (PsppireAcr, psppire_acr, GTK_TYPE_HBOX);
46 psppire_acr_dispose (GObject *obj)
48 PsppireAcr *acr = PSPPIRE_ACR (obj);
49 psppire_acr_set_model (acr, NULL);
51 G_OBJECT_CLASS (psppire_acr_parent_class)->dispose (obj);
55 psppire_acr_class_init (PsppireAcrClass *class)
57 G_OBJECT_CLASS (class)->dispose = psppire_acr_dispose;
60 static gboolean row_is_selected (const PsppireAcr *acr);
64 value_from_entry (gint col, GValue *val, gpointer data)
66 GtkEntry *entry = data;
67 const gchar *text = gtk_entry_get_text (entry);
68 gdouble x = g_strtod (text, 0);
70 g_value_init (val, G_TYPE_DOUBLE);
71 g_value_set_double (val, x);
77 /* Returns true, if there's text in the entry */
79 entry_not_empty (gpointer data)
81 GtkEntry *entry = data;
83 const char *text = gtk_entry_get_text (entry);
85 return !g_str_equal (text, "");
90 clear_entry (gpointer data)
92 GtkEntry *entry = data;
93 gtk_entry_set_text (entry, "");
98 on_entry_change (GtkEntry *entry, PsppireAcr *acr)
100 gtk_widget_set_sensitive (acr->add_button, acr->enabled (entry));
102 gtk_widget_set_sensitive (acr->change_button, acr->enabled (entry)
103 && row_is_selected (acr));
107 psppire_acr_set_entry (PsppireAcr *acr, GtkEntry *entry)
109 acr->get_value = value_from_entry;
110 acr->get_value_data = entry;
111 acr->enabled = entry_not_empty;
112 acr->enabled_data = entry;
113 acr->update = clear_entry;
114 acr->update_data = entry;
116 g_signal_connect (entry, "changed", G_CALLBACK (on_entry_change), acr);
120 /* Callback for when the Add button is clicked.
121 It appends an item to the list. */
123 on_add_button_clicked (PsppireAcr *acr)
127 gtk_list_store_append (acr->list_store, &iter);
130 i < gtk_tree_model_get_n_columns (GTK_TREE_MODEL (acr->list_store));
134 if ( ! acr->get_value (i, &value, acr->get_value_data) )
137 gtk_list_store_set_value (acr->list_store, &iter,
139 g_value_unset (&value);
142 if (acr->update) acr->update (acr->update_data);
146 /* Callback for when the Changed button is clicked.
147 It replaces the currently selected entry. */
149 on_change_button_clicked (PsppireAcr *acr)
152 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
155 gtk_tree_selection_get_selected_rows (acr->selection,
158 GtkTreePath *path = l->data;
162 gtk_tree_model_get_iter (model, &iter, path);
165 i < gtk_tree_model_get_n_columns (GTK_TREE_MODEL (acr->list_store));
169 if ( ! acr->get_value (i, &value, acr->get_value_data) )
172 gtk_list_store_set_value (acr->list_store, &iter,
174 g_value_unset (&value);
177 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
180 if ( acr->update) acr->update (acr->update_data);
184 /* Callback for when the remove button is clicked.
185 It deletes the currently selected entry. */
187 on_remove_button_clicked (PsppireAcr *acr)
189 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
192 gtk_tree_selection_get_selected_rows (acr->selection,
195 GtkTreePath *path = l->data;
199 gtk_tree_model_get_iter (model, &iter, path);
201 gtk_list_store_remove (acr->list_store, &iter);
203 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
207 /* Returns true if there is a row currently selected.
210 row_is_selected (const PsppireAcr *acr)
213 GtkTreeModel *model = GTK_TREE_MODEL (acr->list_store);
214 GList *l = gtk_tree_selection_get_selected_rows (acr->selection,
217 result = (l != NULL);
219 g_list_foreach (l, (GFunc) gtk_tree_path_free, NULL);
226 /* Callback which occurs when an item in the treeview
229 on_select (GtkTreeSelection *selection, gpointer data)
231 PsppireAcr *acr = data;
233 gtk_widget_set_sensitive (acr->remove_button, row_is_selected (acr));
235 gtk_widget_set_sensitive (acr->change_button,
236 row_is_selected (acr)
242 psppire_acr_set_enabled (PsppireAcr *acr, gboolean status)
245 gtk_widget_set_sensitive (acr->add_button, status);
247 gtk_widget_set_sensitive (acr->change_button, status
248 && row_is_selected (acr));
253 psppire_acr_init (PsppireAcr *acr)
255 GtkWidget *bb = gtk_vbutton_box_new ();
257 GtkWidget *sw = gtk_scrolled_window_new (NULL, NULL);
259 acr->tv = GTK_TREE_VIEW (gtk_tree_view_new ());
261 acr->add_button = gtk_button_new_from_stock (GTK_STOCK_ADD);
262 acr->change_button = gtk_button_new_from_stock (GTK_STOCK_EDIT);
263 acr->remove_button = gtk_button_new_from_stock (GTK_STOCK_REMOVE);
265 acr->get_value = NULL;
266 acr->get_value_data = NULL;
270 gtk_widget_set_sensitive (acr->change_button, FALSE);
271 gtk_widget_set_sensitive (acr->remove_button, FALSE);
272 gtk_widget_set_sensitive (acr->add_button, FALSE);
274 psppire_box_pack_start_defaults (GTK_BOX (bb), acr->add_button);
275 psppire_box_pack_start_defaults (GTK_BOX (bb), acr->change_button);
276 psppire_box_pack_start_defaults (GTK_BOX (bb), acr->remove_button);
278 gtk_box_pack_start (GTK_BOX (acr), bb, FALSE, TRUE, 5);
281 "hscrollbar-policy", GTK_POLICY_NEVER,
282 "vscrollbar-policy", GTK_POLICY_AUTOMATIC,
283 "shadow-type", GTK_SHADOW_ETCHED_IN,
286 gtk_container_add (GTK_CONTAINER (sw), GTK_WIDGET (acr->tv));
288 gtk_box_pack_start (GTK_BOX (acr), sw, TRUE, TRUE, 5);
291 g_signal_connect_swapped (acr->add_button, "clicked",
292 G_CALLBACK (on_add_button_clicked), acr);
293 g_signal_connect_swapped (acr->change_button, "clicked",
294 G_CALLBACK (on_change_button_clicked), acr);
295 g_signal_connect_swapped (acr->remove_button, "clicked",
296 G_CALLBACK (on_remove_button_clicked), acr);
298 gtk_widget_show_all (bb);
301 g_object_set (acr->tv, "headers-visible", FALSE, NULL);
303 acr->list_store = NULL;
305 psppire_acr_set_model (acr, acr->list_store);
307 acr->selection = gtk_tree_view_get_selection (acr->tv);
309 g_signal_connect (acr->selection, "changed", G_CALLBACK (on_select), acr);
311 gtk_widget_set_sensitive (GTK_WIDGET (acr), FALSE);
313 gtk_widget_show_all (sw);
316 GtkCellRenderer *renderer = gtk_cell_renderer_text_new ();
317 GtkTreeViewColumn *column =
318 gtk_tree_view_column_new_with_attributes ("value",
323 gtk_tree_view_append_column (acr->tv, column);
330 psppire_acr_new (void)
332 return GTK_WIDGET (g_object_new (psppire_acr_get_type (), NULL));
337 /* Set the widget's treemodel to LISTSTORE. LISTSTORE ownership is not
340 psppire_acr_set_model (PsppireAcr *acr, GtkListStore *liststore)
343 g_object_unref (acr->list_store);
345 g_object_ref (liststore);
347 acr->list_store = liststore;
349 gtk_tree_view_set_model (GTK_TREE_VIEW (acr->tv),
350 GTK_TREE_MODEL (liststore));
352 gtk_widget_set_sensitive (GTK_WIDGET (acr), liststore != NULL);
357 psppire_acr_set_enable_func (PsppireAcr *acr, EnabledFunc func, gpointer p)
360 acr->enabled_data = p;
364 psppire_acr_set_get_value_func (PsppireAcr *acr,
365 GetValueFunc getvalue, gpointer data)
367 acr->get_value_data = data;
368 acr->get_value = getvalue;