src/ui/gui/missing-val-dialog.c

   1 /*
   2     PSPPIRE --- A Graphical User Interface for PSPP
   3     Copyright (C) 2005, 2006  Free Software Foundation
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18     02110-1301, USA. */
  19
  20 /*  This module describes the behaviour of the Missing Values dialog box,
  21     used for input of the missing values in the variable sheet */
  22
  23 #include <config.h>
  24 #include <gettext.h>
  25 #define _(msgid) gettext (msgid)
  26 #define N_(msgid) msgid
  27
  28
  29 #include "helper.h"
  30 #include "missing-val-dialog.h"
  31 #include <data/missing-values.h>
  32 #include <data/variable.h>
  33 #include <data/data-in.h>
  34
  35
  36 #include <gtk/gtk.h>
  37 #include <glade/glade.h>
  38
  39 #include <string.h>
  40
  41
  42 /* A simple (sub) dialog box for displaying user input errors */
  43 static void
  44 err_dialog(const gchar *msg, GtkWindow *window)
  45 {
  46   GtkWidget *hbox ;
  47   GtkWidget *label = gtk_label_new (msg);
  48
  49   GtkWidget *dialog =
  50     gtk_dialog_new_with_buttons ("PSPP",
  51                                  window,
  52                                  GTK_DIALOG_MODAL |
  53                                  GTK_DIALOG_DESTROY_WITH_PARENT |
  54                                  GTK_DIALOG_NO_SEPARATOR,
  55                                  GTK_STOCK_OK,
  56                                  GTK_RESPONSE_ACCEPT,
  57                                  NULL);
  58
  59
  60   GtkWidget *icon = gtk_image_new_from_stock(GTK_STOCK_DIALOG_ERROR,
  61                                              GTK_ICON_SIZE_DIALOG);
  62
  63   g_signal_connect_swapped (dialog,
  64                             "response",
  65                             G_CALLBACK (gtk_widget_destroy),
  66                             dialog);
  67
  68   hbox = gtk_hbox_new(FALSE, 10);
  69
  70   gtk_container_add (GTK_CONTAINER (GTK_DIALOG(dialog)->vbox),
  71                      hbox);
  72
  73   gtk_box_pack_start(GTK_BOX(hbox), icon, TRUE, FALSE, 10);
  74   gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, TRUE, 10);
  75
  76   gtk_widget_show_all (dialog);
  77 }
  78
  79
  80 /* Callback which occurs when the OK button is clicked */
  81 static void
  82 missing_val_dialog_accept(GtkWidget *w, gpointer data)
  83 {
  84   struct missing_val_dialog *dialog = data;
  85
  86   const struct fmt_spec *write_spec = var_get_write_format (dialog->pv);
  87
  88   if ( gtk_toggle_button_get_active(dialog->button_discrete))
  89     {
  90       gint nvals = 0;
  91       gint badvals = 0;
  92       gint i;
  93       mv_clear(&dialog->mvl);
  94       for(i = 0 ; i < 3 ; ++i )
  95         {
  96           gchar *text =
  97             g_strdup(gtk_entry_get_text(GTK_ENTRY(dialog->mv[i])));
  98
  99           union value v;
 100           if ( !text || strlen(g_strstrip(text)) == 0 )
 101             {
 102               g_free(text);
 103               continue;
 104             }
 105
 106           if ( text_to_value(text, &v, *write_spec))
 107             {
 108               nvals++;
 109               mv_add_value (&dialog->mvl, &v);
 110             }
 111           else
 112               badvals++;
 113           g_free(text);
 114         }
 115       if ( nvals == 0 || badvals > 0 )
 116         {
 117           err_dialog(_("Incorrect value for variable type"),
 118                      GTK_WINDOW(dialog->window));
 119           return ;
 120         }
 121     }
 122
 123   if (gtk_toggle_button_get_active(dialog->button_range))
 124     {
 125       gchar *discrete_text ;
 126
 127       union value low_val ;
 128       union value high_val;
 129       const gchar *low_text = gtk_entry_get_text(GTK_ENTRY(dialog->low));
 130       const gchar *high_text = gtk_entry_get_text(GTK_ENTRY(dialog->high));
 131
 132       if ( text_to_value(low_text, &low_val, *write_spec)
 133            &&
 134            text_to_value(high_text, &high_val, *write_spec) )
 135         {
 136           if ( low_val.f > high_val.f )
 137             {
 138               err_dialog(_("Incorrect range specification"),
 139                           GTK_WINDOW(dialog->window));
 140               return ;
 141             }
 142         }
 143       else
 144         {
 145           err_dialog(_("Incorrect range specification"),
 146                       GTK_WINDOW(dialog->window));
 147           return;
 148         }
 149
 150       discrete_text =
 151         g_strdup(gtk_entry_get_text(GTK_ENTRY(dialog->discrete)));
 152
 153       mv_clear(&dialog->mvl);
 154       mv_add_num_range(&dialog->mvl, low_val.f, high_val.f);
 155
 156       if ( discrete_text && strlen(g_strstrip(discrete_text)) > 0 )
 157         {
 158           union value discrete_val;
 159           if ( !text_to_value(discrete_text, &discrete_val,
 160                               *write_spec))
 161             {
 162               err_dialog(_("Incorrect value for variable type"),
 163                          GTK_WINDOW(dialog->window) );
 164               g_free(discrete_text);
 165               return;
 166             }
 167           mv_add_value(&dialog->mvl, &discrete_val);
 168         }
 169       g_free(discrete_text);
 170     }
 171
 172
 173   if (gtk_toggle_button_get_active(dialog->button_none))
 174     mv_clear(&dialog->mvl);
 175
 176   var_set_missing_values (dialog->pv, &dialog->mvl);
 177
 178   gtk_widget_hide (dialog->window);
 179 }
 180
 181
 182 /* Callback which occurs when the 'discrete' radiobutton is toggled */
 183 static void
 184 discrete(GtkToggleButton *button, gpointer data)
 185 {
 186   gint i;
 187   struct missing_val_dialog *dialog = data;
 188
 189   for(i = 0 ; i < 3 ; ++i )
 190     {
 191       gtk_widget_set_sensitive(dialog->mv[i],
 192                                gtk_toggle_button_get_active(button));
 193     }
 194 }
 195
 196 /* Callback which occurs when the 'range' radiobutton is toggled */
 197 static void
 198 range(GtkToggleButton *button, gpointer data)
 199 {
 200   struct missing_val_dialog *dialog = data;
 201
 202   const gboolean active = gtk_toggle_button_get_active (button);
 203
 204   gtk_widget_set_sensitive(dialog->low, active);
 205   gtk_widget_set_sensitive(dialog->high, active);
 206   gtk_widget_set_sensitive(dialog->discrete, active);
 207 }
 208
 209
 210 /* Creates the dialog structure from the xml */
 211 struct missing_val_dialog *
 212 missing_val_dialog_create(GladeXML *xml)
 213 {
 214   struct missing_val_dialog *dialog = g_malloc(sizeof(*dialog));
 215
 216   dialog->window = get_widget_assert(xml, "missing_values_dialog");
 217
 218   gtk_window_set_transient_for
 219     (GTK_WINDOW(dialog->window),
 220      GTK_WINDOW(get_widget_assert(xml, "data_editor")));
 221
 222
 223   g_signal_connect_swapped(get_widget_assert(xml, "missing_val_cancel"),
 224                    "clicked", G_CALLBACK(gtk_widget_hide), dialog->window);
 225
 226   g_signal_connect(get_widget_assert(xml, "missing_val_ok"),
 227                    "clicked", G_CALLBACK(missing_val_dialog_accept), dialog);
 228
 229
 230   dialog->mv[0] = get_widget_assert(xml, "mv0");
 231   dialog->mv[1] = get_widget_assert(xml, "mv1");
 232   dialog->mv[2] = get_widget_assert(xml, "mv2");
 233
 234   dialog->low = get_widget_assert(xml, "mv-low");
 235   dialog->high = get_widget_assert(xml, "mv-high");
 236   dialog->discrete = get_widget_assert(xml, "mv-discrete");
 237
 238
 239   dialog->button_none     =
 240     GTK_TOGGLE_BUTTON(get_widget_assert(xml, "no_missing"));
 241
 242   dialog->button_discrete =
 243     GTK_TOGGLE_BUTTON(get_widget_assert(xml, "discrete_missing"));
 244
 245   dialog->button_range    =
 246     GTK_TOGGLE_BUTTON(get_widget_assert(xml, "range_missing"));
 247
 248
 249   g_signal_connect(G_OBJECT(dialog->button_discrete), "toggled",
 250                    G_CALLBACK(discrete), dialog);
 251
 252   g_signal_connect(G_OBJECT(dialog->button_range), "toggled",
 253                    G_CALLBACK(range), dialog);
 254
 255   return dialog;
 256 }
 257
 258 /* Shows the dialog box and sets default values */
 259 void
 260 missing_val_dialog_show(struct missing_val_dialog *dialog)
 261 {
 262   const struct fmt_spec *write_spec ;
 263
 264   gint i;
 265   g_return_if_fail(dialog);
 266   g_return_if_fail(dialog->pv);
 267
 268   mv_copy (&dialog->mvl, var_get_missing_values (dialog->pv));
 269
 270   write_spec = var_get_write_format (dialog->pv);
 271
 272   /* Blank all entry boxes and make them insensitive */
 273   gtk_entry_set_text(GTK_ENTRY(dialog->low), "");
 274   gtk_entry_set_text(GTK_ENTRY(dialog->high), "");
 275   gtk_entry_set_text(GTK_ENTRY(dialog->discrete), "");
 276   gtk_widget_set_sensitive(dialog->low, FALSE);
 277   gtk_widget_set_sensitive(dialog->high, FALSE);
 278   gtk_widget_set_sensitive(dialog->discrete, FALSE);
 279
 280   gtk_widget_set_sensitive(GTK_WIDGET(dialog->button_range),
 281                            var_is_numeric (dialog->pv));
 282
 283
 284   for(i = 0 ; i < 3 ; ++i )
 285     {
 286       gtk_entry_set_text(GTK_ENTRY(dialog->mv[i]), "");
 287       gtk_widget_set_sensitive(dialog->mv[i], FALSE);
 288     }
 289
 290   if ( mv_has_range (&dialog->mvl))
 291     {
 292       union value low, high;
 293       gchar *low_text;
 294       gchar *high_text;
 295       mv_peek_range(&dialog->mvl, &low.f, &high.f);
 296
 297       low_text = value_to_text(low, *write_spec);
 298       high_text = value_to_text(high, *write_spec);
 299
 300       gtk_entry_set_text(GTK_ENTRY(dialog->low), low_text);
 301       gtk_entry_set_text(GTK_ENTRY(dialog->high), high_text);
 302       g_free(low_text);
 303       g_free(high_text);
 304
 305       if ( mv_has_value(&dialog->mvl))
 306         {
 307           gchar *text;
 308           union value value;
 309           mv_peek_value(&dialog->mvl, &value, 0);
 310           text = value_to_text(value, *write_spec);
 311           gtk_entry_set_text(GTK_ENTRY(dialog->discrete), text);
 312           g_free(text);
 313         }
 314
 315       gtk_toggle_button_set_active(dialog->button_range, TRUE);
 316       gtk_widget_set_sensitive(dialog->low, TRUE);
 317       gtk_widget_set_sensitive(dialog->high, TRUE);
 318       gtk_widget_set_sensitive(dialog->discrete, TRUE);
 319
 320     }
 321   else if ( mv_has_value (&dialog->mvl))
 322     {
 323       const int n = mv_n_values (&dialog->mvl);
 324
 325       for(i = 0 ; i < 3 ; ++i )
 326         {
 327           if ( i < n)
 328             {
 329               gchar *text ;
 330               union value value;
 331
 332               mv_peek_value(&dialog->mvl, &value, i);
 333               text = value_to_text(value, *write_spec);
 334               gtk_entry_set_text(GTK_ENTRY(dialog->mv[i]), text);
 335               g_free(text);
 336             }
 337           gtk_widget_set_sensitive(dialog->mv[i], TRUE);
 338         }
 339       gtk_toggle_button_set_active(dialog->button_discrete, TRUE);
 340     }
 341   else if ( mv_is_empty (&dialog->mvl))
 342     {
 343       gtk_toggle_button_set_active(dialog->button_none, TRUE);
 344     }
 345
 346   gtk_widget_show(dialog->window);
 347 }