divelist.c

   1 /* divelist.c */
   2 /* this creates the UI for the dive list -
   3  * controlled through the following interfaces:
   4  *
   5  * void flush_divelist(struct dive *dive)
   6  * GtkWidget dive_list_create(void)
   7  * void dive_list_update_dives(void)
   8  * void update_dive_list_units(void)
   9  * void set_divelist_font(const char *font)
  10  * void mark_divelist_changed(int changed)
  11  * int unsaved_changes()
  12  */
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #include <math.h>
  18
  19 #include "divelist.h"
  20 #include "dive.h"
  21 #include "display.h"
  22 #include "display-gtk.h"
  23
  24 struct DiveList {
  25         GtkWidget    *tree_view;
  26         GtkWidget    *container_widget;
  27         GtkListStore *model;
  28         GtkTreeViewColumn *nr, *date, *stars, *depth, *duration, *location;
  29         GtkTreeViewColumn *temperature, *cylinder, *nitrox, *sac, *otu;
  30         int changed;
  31 };
  32
  33 static struct DiveList dive_list;
  34
  35 /*
  36  * The dive list has the dive data in both string format (for showing)
  37  * and in "raw" format (for sorting purposes)
  38  */
  39 enum {
  40         DIVE_INDEX = 0,
  41         DIVE_NR,                /* int: dive->nr */
  42         DIVE_DATE,              /* time_t: dive->when */
  43         DIVE_RATING,            /* int: 0-5 stars */
  44         DIVE_DEPTH,             /* int: dive->maxdepth in mm */
  45         DIVE_DURATION,          /* int: in seconds */
  46         DIVE_TEMPERATURE,       /* int: in mkelvin */
  47         DIVE_CYLINDER,
  48         DIVE_NITROX,            /* int: dummy */
  49         DIVE_SAC,               /* int: in ml/min */
  50         DIVE_OTU,               /* int: in OTUs */
  51         DIVE_LOCATION,          /* "2nd Cathedral, Lanai" */
  52         DIVELIST_COLUMNS
  53 };
  54
  55 static GList *selected_dives;
  56
  57 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
  58 {
  59         GtkTreeIter iter;
  60         GValue value = {0, };
  61         GtkTreePath *path;
  62
  63         int nr_selected = gtk_tree_selection_count_selected_rows(selection);
  64
  65         if (selected_dives) {
  66                 g_list_foreach (selected_dives, (GFunc) gtk_tree_path_free, NULL);
  67                 g_list_free (selected_dives);
  68         }
  69         selected_dives = gtk_tree_selection_get_selected_rows(selection, NULL);
  70
  71         switch (nr_selected) {
  72         case 0: /* keep showing the last selected dive */
  73                 return;
  74         case 1:
  75                 /* just pick that dive as selected */
  76                 path = g_list_nth_data(selected_dives, 0);
  77                 if (gtk_tree_model_get_iter(model, &iter, path)) {
  78                         gtk_tree_model_get_value(model, &iter, DIVE_INDEX, &value);
  79                         selected_dive = g_value_get_int(&value);
  80                         repaint_dive();
  81                 }
  82                 return;
  83         default: /* multiple selections - what now? At this point I
  84                   * don't want to change the selected dive unless
  85                   * there is exactly one dive selected; not sure this
  86                   * is the most intuitive solution.
  87                   * I do however want to keep around which dives have
  88                   * been selected */
  89                 return;
  90         }
  91 }
  92
  93 const char *star_strings[] = {
  94         ZERO_STARS,
  95         ONE_STARS,
  96         TWO_STARS,
  97         THREE_STARS,
  98         FOUR_STARS,
  99         FIVE_STARS
 100 };
 101
 102 static void star_data_func(GtkTreeViewColumn *col,
 103                            GtkCellRenderer *renderer,
 104                            GtkTreeModel *model,
 105                            GtkTreeIter *iter,
 106                            gpointer data)
 107 {
 108         int nr_stars;
 109         char buffer[40];
 110
 111         gtk_tree_model_get(model, iter, DIVE_RATING, &nr_stars, -1);
 112         if (nr_stars < 0 || nr_stars > 5)
 113                 nr_stars = 0;
 114         snprintf(buffer, sizeof(buffer), "%s", star_strings[nr_stars]);
 115         g_object_set(renderer, "text", buffer, NULL);
 116 }
 117
 118 static void date_data_func(GtkTreeViewColumn *col,
 119                            GtkCellRenderer *renderer,
 120                            GtkTreeModel *model,
 121                            GtkTreeIter *iter,
 122                            gpointer data)
 123 {
 124         int val;
 125         struct tm *tm;
 126         time_t when;
 127         char buffer[40];
 128
 129         gtk_tree_model_get(model, iter, DIVE_DATE, &val, -1);
 130
 131         /* 2038 problem */
 132         when = val;
 133
 134         tm = gmtime(&when);
 135         snprintf(buffer, sizeof(buffer),
 136                 "%s, %s %d, %d %02d:%02d",
 137                 weekday(tm->tm_wday),
 138                 monthname(tm->tm_mon),
 139                 tm->tm_mday, tm->tm_year + 1900,
 140                 tm->tm_hour, tm->tm_min);
 141         g_object_set(renderer, "text", buffer, NULL);
 142 }
 143
 144 static void depth_data_func(GtkTreeViewColumn *col,
 145                             GtkCellRenderer *renderer,
 146                             GtkTreeModel *model,
 147                             GtkTreeIter *iter,
 148                             gpointer data)
 149 {
 150         int depth, integer, frac, len;
 151         char buffer[40];
 152
 153         gtk_tree_model_get(model, iter, DIVE_DEPTH, &depth, -1);
 154
 155         switch (output_units.length) {
 156         case METERS:
 157                 /* To tenths of meters */
 158                 depth = (depth + 49) / 100;
 159                 integer = depth / 10;
 160                 frac = depth % 10;
 161                 if (integer < 20)
 162                         break;
 163                 if (frac >= 5)
 164                         integer++;
 165                 frac = -1;
 166                 break;
 167         case FEET:
 168                 integer = mm_to_feet(depth) + 0.5;
 169                 frac = -1;
 170                 break;
 171         default:
 172                 return;
 173         }
 174         len = snprintf(buffer, sizeof(buffer), "%d", integer);
 175         if (frac >= 0)
 176                 len += snprintf(buffer+len, sizeof(buffer)-len, ".%d", frac);
 177
 178         g_object_set(renderer, "text", buffer, NULL);
 179 }
 180
 181 static void duration_data_func(GtkTreeViewColumn *col,
 182                                GtkCellRenderer *renderer,
 183                                GtkTreeModel *model,
 184                                GtkTreeIter *iter,
 185                                gpointer data)
 186 {
 187         unsigned int sec;
 188         char buffer[16];
 189
 190         gtk_tree_model_get(model, iter, DIVE_DURATION, &sec, -1);
 191         snprintf(buffer, sizeof(buffer), "%d:%02d", sec / 60, sec % 60);
 192
 193         g_object_set(renderer, "text", buffer, NULL);
 194 }
 195
 196 static void temperature_data_func(GtkTreeViewColumn *col,
 197                                   GtkCellRenderer *renderer,
 198                                   GtkTreeModel *model,
 199                                   GtkTreeIter *iter,
 200                                   gpointer data)
 201 {
 202         int value;
 203         char buffer[80];
 204
 205         gtk_tree_model_get(model, iter, DIVE_TEMPERATURE, &value, -1);
 206
 207         *buffer = 0;
 208         if (value) {
 209                 double deg;
 210                 switch (output_units.temperature) {
 211                 case CELSIUS:
 212                         deg = mkelvin_to_C(value);
 213                         break;
 214                 case FAHRENHEIT:
 215                         deg = mkelvin_to_F(value);
 216                         break;
 217                 default:
 218                         return;
 219                 }
 220                 snprintf(buffer, sizeof(buffer), "%.1f", deg);
 221         }
 222
 223         g_object_set(renderer, "text", buffer, NULL);
 224 }
 225
 226 /*
 227  * Get "maximal" dive gas for a dive.
 228  * Rules:
 229  *  - Trimix trumps nitrox (highest He wins, O2 breaks ties)
 230  *  - Nitrox trumps air (even if hypoxic)
 231  * These are the same rules as the inter-dive sorting rules.
 232  */
 233 static void get_dive_gas(struct dive *dive, int *o2, int *he, int *o2low)
 234 {
 235         int i;
 236         int maxo2 = -1, maxhe = -1, mino2 = 1000;
 237
 238         for (i = 0; i < MAX_CYLINDERS; i++) {
 239                 cylinder_t *cyl = dive->cylinder + i;
 240                 struct gasmix *mix = &cyl->gasmix;
 241                 int o2 = mix->o2.permille;
 242                 int he = mix->he.permille;
 243
 244                 if (cylinder_none(cyl))
 245                         continue;
 246                 if (!o2)
 247                         o2 = 209;
 248                 if (o2 < mino2)
 249                         mino2 = o2;
 250                 if (he > maxhe)
 251                         goto newmax;
 252                 if (he < maxhe)
 253                         continue;
 254                 if (o2 <= maxo2)
 255                         continue;
 256 newmax:
 257                 maxhe = he;
 258                 maxo2 = o2;
 259         }
 260         /* All air? Show/sort as "air"/zero */
 261         if (!maxhe && maxo2 == 209 && mino2 == maxo2)
 262                 maxo2 = mino2 = 0;
 263         *o2 = maxo2;
 264         *he = maxhe;
 265         *o2low = mino2;
 266 }
 267
 268 static gint nitrox_sort_func(GtkTreeModel *model,
 269         GtkTreeIter *iter_a,
 270         GtkTreeIter *iter_b,
 271         gpointer user_data)
 272 {
 273         int index_a, index_b;
 274         struct dive *a, *b;
 275         int a_o2, b_o2;
 276         int a_he, b_he;
 277         int a_o2low, b_o2low;
 278
 279         gtk_tree_model_get(model, iter_a, DIVE_INDEX, &index_a, -1);
 280         gtk_tree_model_get(model, iter_b, DIVE_INDEX, &index_b, -1);
 281         a = get_dive(index_a);
 282         b = get_dive(index_b);
 283         get_dive_gas(a, &a_o2, &a_he, &a_o2low);
 284         get_dive_gas(b, &b_o2, &b_he, &b_o2low);
 285
 286         /* Sort by Helium first, O2 second */
 287         if (a_he == b_he) {
 288                 if (a_o2 == b_o2)
 289                         return a_o2low - b_o2low;
 290                 return a_o2 - b_o2;
 291         }
 292         return a_he - b_he;
 293 }
 294
 295 static void nitrox_data_func(GtkTreeViewColumn *col,
 296                              GtkCellRenderer *renderer,
 297                              GtkTreeModel *model,
 298                              GtkTreeIter *iter,
 299                              gpointer data)
 300 {
 301         int index, o2, he, o2low;
 302         char buffer[80];
 303         struct dive *dive;
 304
 305         gtk_tree_model_get(model, iter, DIVE_INDEX, &index, -1);
 306         dive = get_dive(index);
 307         get_dive_gas(dive, &o2, &he, &o2low);
 308         o2 = (o2 + 5) / 10;
 309         he = (he + 5) / 10;
 310         o2low = (o2low + 5) / 10;
 311
 312         if (he)
 313                 snprintf(buffer, sizeof(buffer), "%d/%d", o2, he);
 314         else if (o2)
 315                 if (o2 == o2low)
 316                         snprintf(buffer, sizeof(buffer), "%d", o2);
 317                 else
 318                         snprintf(buffer, sizeof(buffer), "%d-%d", o2low, o2);
 319         else
 320                 strcpy(buffer, "air");
 321
 322         g_object_set(renderer, "text", buffer, NULL);
 323 }
 324
 325 /* Render the SAC data (integer value of "ml / min") */
 326 static void sac_data_func(GtkTreeViewColumn *col,
 327                           GtkCellRenderer *renderer,
 328                           GtkTreeModel *model,
 329                           GtkTreeIter *iter,
 330                           gpointer data)
 331 {
 332         int value;
 333         const char *fmt;
 334         char buffer[16];
 335         double sac;
 336
 337         gtk_tree_model_get(model, iter, DIVE_SAC, &value, -1);
 338
 339         if (!value) {
 340                 g_object_set(renderer, "text", "", NULL);
 341                 return;
 342         }
 343
 344         sac = value / 1000.0;
 345         switch (output_units.volume) {
 346         case LITER:
 347                 fmt = "%4.1f";
 348                 break;
 349         case CUFT:
 350                 fmt = "%4.2f";
 351                 sac = ml_to_cuft(sac * 1000);
 352                 break;
 353         }
 354         snprintf(buffer, sizeof(buffer), fmt, sac);
 355
 356         g_object_set(renderer, "text", buffer, NULL);
 357 }
 358
 359 /* Render the OTU data (integer value of "OTU") */
 360 static void otu_data_func(GtkTreeViewColumn *col,
 361                           GtkCellRenderer *renderer,
 362                           GtkTreeModel *model,
 363                           GtkTreeIter *iter,
 364                           gpointer data)
 365 {
 366         int value;
 367         char buffer[16];
 368
 369         gtk_tree_model_get(model, iter, DIVE_OTU, &value, -1);
 370
 371         if (!value) {
 372                 g_object_set(renderer, "text", "", NULL);
 373                 return;
 374         }
 375
 376         snprintf(buffer, sizeof(buffer), "%d", value);
 377
 378         g_object_set(renderer, "text", buffer, NULL);
 379 }
 380
 381 /* calculate OTU for a dive */
 382 static int calculate_otu(struct dive *dive)
 383 {
 384         int i;
 385         double otu = 0.0;
 386
 387         for (i = 1; i < dive->samples; i++) {
 388                 int t;
 389                 double po2;
 390                 struct sample *sample = dive->sample + i;
 391                 struct sample *psample = sample - 1;
 392                 t = sample->time.seconds - psample->time.seconds;
 393                 po2 = dive->cylinder[sample->cylinderindex].gasmix.o2.permille / 1000.0 *
 394                         (sample->depth.mm + 10000) / 10000.0;
 395                 if (po2 >= 0.5)
 396                         otu += pow(po2 - 0.5, 0.83) * t / 30.0;
 397         }
 398         return otu + 0.5;
 399 }
 400 /*
 401  * Return air usage (in liters).
 402  */
 403 static double calculate_airuse(struct dive *dive)
 404 {
 405         double airuse = 0;
 406         int i;
 407
 408         for (i = 0; i < MAX_CYLINDERS; i++) {
 409                 pressure_t start, end;
 410                 cylinder_t *cyl = dive->cylinder + i;
 411                 int size = cyl->type.size.mliter;
 412                 double kilo_atm;
 413
 414                 if (!size)
 415                         continue;
 416
 417                 start = cyl->start.mbar ? cyl->start : cyl->sample_start;
 418                 end = cyl->end.mbar ? cyl->end : cyl->sample_end;
 419                 kilo_atm = (to_ATM(start) - to_ATM(end)) / 1000.0;
 420
 421                 /* Liters of air at 1 atm == milliliters at 1k atm*/
 422                 airuse += kilo_atm * size;
 423         }
 424         return airuse;
 425 }
 426
 427 static int calculate_sac(struct dive *dive)
 428 {
 429         double airuse, pressure, sac;
 430         int duration, i;
 431
 432         airuse = calculate_airuse(dive);
 433         if (!airuse)
 434                 return 0;
 435         if (!dive->duration.seconds)
 436                 return 0;
 437
 438         /* find and eliminate long surface intervals */
 439         duration = dive->duration.seconds;
 440         for (i = 0; i < dive->samples; i++) {
 441                 if (dive->sample[i].depth.mm < 100) { /* less than 10cm */
 442                         int end = i + 1;
 443                         while (end < dive->samples && dive->sample[end].depth.mm < 100)
 444                                 end++;
 445                         /* we only want the actual surface time during a dive */
 446                         if (end < dive->samples) {
 447                                 end--;
 448                                 duration -= dive->sample[end].time.seconds -
 449                                                 dive->sample[i].time.seconds;
 450                                 i = end + 1;
 451                         }
 452                 }
 453         }
 454         /* Mean pressure in atm: 1 atm per 10m */
 455         pressure = 1 + (dive->meandepth.mm / 10000.0);
 456         sac = airuse / pressure * 60 / duration;
 457
 458         /* milliliters per minute.. */
 459         return sac * 1000;
 460 }
 461
 462 void update_cylinder_related_info(struct dive *dive)
 463 {
 464         if (dive != NULL) {
 465                 dive->sac = calculate_sac(dive);
 466                 dive->otu = calculate_otu(dive);
 467         }
 468 }
 469
 470 static void get_string(char **str, const char *s)
 471 {
 472         int len;
 473         char *n;
 474
 475         if (!s)
 476                 s = "";
 477         len = strlen(s);
 478         if (len > 60)
 479                 len = 60;
 480         n = malloc(len+1);
 481         memcpy(n, s, len);
 482         n[len] = 0;
 483         *str = n;
 484 }
 485
 486 static void get_location(struct dive *dive, char **str)
 487 {
 488         get_string(str, dive->location);
 489 }
 490
 491 static void get_cylinder(struct dive *dive, char **str)
 492 {
 493         get_string(str, dive->cylinder[0].type.description);
 494 }
 495
 496 /*
 497  * Set up anything that could have changed due to editing
 498  * of dive information
 499  */
 500 static void fill_one_dive(struct dive *dive,
 501                           GtkTreeModel *model,
 502                           GtkTreeIter *iter)
 503 {
 504         char *location, *cylinder;
 505
 506         get_cylinder(dive, &cylinder);
 507         get_location(dive, &location);
 508
 509         gtk_list_store_set(GTK_LIST_STORE(model), iter,
 510                 DIVE_NR, dive->number,
 511                 DIVE_LOCATION, location,
 512                 DIVE_CYLINDER, cylinder,
 513                 DIVE_RATING, dive->rating,
 514                 DIVE_SAC, dive->sac,
 515                 DIVE_OTU, dive->otu,
 516                 -1);
 517 }
 518
 519 static gboolean set_one_dive(GtkTreeModel *model,
 520                              GtkTreePath *path,
 521                              GtkTreeIter *iter,
 522                              gpointer data)
 523 {
 524         GValue value = {0, };
 525         struct dive *dive;
 526
 527         /* Get the dive number */
 528         gtk_tree_model_get_value(model, iter, DIVE_INDEX, &value);
 529         dive = get_dive(g_value_get_int(&value));
 530         if (!dive)
 531                 return TRUE;
 532         if (data && dive != data)
 533                 return FALSE;
 534
 535         fill_one_dive(dive, model, iter);
 536         return dive == data;
 537 }
 538
 539 void flush_divelist(struct dive *dive)
 540 {
 541         GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
 542
 543         gtk_tree_model_foreach(model, set_one_dive, dive);
 544 }
 545
 546 void set_divelist_font(const char *font)
 547 {
 548         PangoFontDescription *font_desc = pango_font_description_from_string(font);
 549         gtk_widget_modify_font(dive_list.tree_view, font_desc);
 550         pango_font_description_free(font_desc);
 551 }
 552
 553 void update_dive_list_units(void)
 554 {
 555         const char *unit;
 556         GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
 557
 558         (void) get_depth_units(0, NULL, &unit);
 559         gtk_tree_view_column_set_title(dive_list.depth, unit);
 560
 561         (void) get_temp_units(0, &unit);
 562         gtk_tree_view_column_set_title(dive_list.temperature, unit);
 563
 564         gtk_tree_model_foreach(model, set_one_dive, NULL);
 565 }
 566
 567 void update_dive_list_col_visibility(void)
 568 {
 569         gtk_tree_view_column_set_visible(dive_list.cylinder, visible_cols.cylinder);
 570         gtk_tree_view_column_set_visible(dive_list.temperature, visible_cols.temperature);
 571         gtk_tree_view_column_set_visible(dive_list.nitrox, visible_cols.nitrox);
 572         gtk_tree_view_column_set_visible(dive_list.sac, visible_cols.sac);
 573         gtk_tree_view_column_set_visible(dive_list.otu, visible_cols.otu);
 574         return;
 575 }
 576
 577 static void fill_dive_list(void)
 578 {
 579         int i;
 580         GtkTreeIter iter;
 581         GtkListStore *store;
 582
 583         store = GTK_LIST_STORE(dive_list.model);
 584
 585         i = dive_table.nr;
 586         while (--i >= 0) {
 587                 struct dive *dive = dive_table.dives[i];
 588
 589                 update_cylinder_related_info(dive);
 590                 gtk_list_store_append(store, &iter);
 591                 gtk_list_store_set(store, &iter,
 592                         DIVE_INDEX, i,
 593                         DIVE_NR, dive->number,
 594                         DIVE_DATE, dive->when,
 595                         DIVE_DEPTH, dive->maxdepth,
 596                         DIVE_DURATION, dive->duration.seconds,
 597                         DIVE_LOCATION, "location",
 598                         DIVE_TEMPERATURE, dive->watertemp.mkelvin,
 599                         DIVE_SAC, 0,
 600                         -1);
 601         }
 602
 603         update_dive_list_units();
 604         if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(dive_list.model), &iter)) {
 605                 GtkTreeSelection *selection;
 606                 selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
 607                 gtk_tree_selection_select_iter(selection, &iter);
 608         }
 609 }
 610
 611 void dive_list_update_dives(void)
 612 {
 613         gtk_list_store_clear(GTK_LIST_STORE(dive_list.model));
 614         fill_dive_list();
 615         repaint_dive();
 616 }
 617
 618 static struct divelist_column {
 619         const char *header;
 620         data_func_t data;
 621         sort_func_t sort;
 622         unsigned int flags;
 623         int *visible;
 624 } column[] = {
 625         [DIVE_NR] = { "#", NULL, NULL, ALIGN_RIGHT | UNSORTABLE },
 626         [DIVE_DATE] = { "Date", date_data_func, NULL, ALIGN_LEFT },
 627         [DIVE_RATING] = { UTF8_BLACKSTAR, star_data_func, NULL, ALIGN_LEFT },
 628         [DIVE_DEPTH] = { "ft", depth_data_func, NULL, ALIGN_RIGHT },
 629         [DIVE_DURATION] = { "min", duration_data_func, NULL, ALIGN_RIGHT },
 630         [DIVE_TEMPERATURE] = { UTF8_DEGREE "F", temperature_data_func, NULL, ALIGN_RIGHT, &visible_cols.temperature },
 631         [DIVE_CYLINDER] = { "Cyl", NULL, NULL, 0, &visible_cols.cylinder },
 632         [DIVE_NITROX] = { "O" UTF8_SUBSCRIPT_2 "%", nitrox_data_func, nitrox_sort_func, 0, &visible_cols.nitrox },
 633         [DIVE_SAC] = { "SAC", sac_data_func, NULL, 0, &visible_cols.sac },
 634         [DIVE_OTU] = { "OTU", otu_data_func, NULL, 0, &visible_cols.otu },
 635         [DIVE_LOCATION] = { "Location", NULL, NULL, ALIGN_LEFT },
 636 };
 637
 638
 639 static GtkTreeViewColumn *divelist_column(struct DiveList *dl, struct divelist_column *col)
 640 {
 641         int index = col - &column[0];
 642         const char *title = col->header;
 643         data_func_t data_func = col->data;
 644         sort_func_t sort_func = col->sort;
 645         unsigned int flags = col->flags;
 646         int *visible = col->visible;
 647         GtkWidget *tree_view = dl->tree_view;
 648         GtkListStore *model = dl->model;
 649         GtkTreeViewColumn *ret;
 650
 651         if (visible && !*visible)
 652                 flags |= INVISIBLE;
 653         ret = tree_view_column(tree_view, index, title, data_func, flags);
 654         if (sort_func)
 655                 gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(model), index, sort_func, NULL, NULL);
 656         return ret;
 657 }
 658
 659 /*
 660  * This is some crazy crap. The only way to get default focus seems
 661  * to be to grab focus as the widget is being shown the first time.
 662  */
 663 static void realize_cb(GtkWidget *tree_view, gpointer userdata)
 664 {
 665         gtk_widget_grab_focus(tree_view);
 666 }
 667
 668 static void row_activated_cb(GtkTreeView *tree_view,
 669                         GtkTreePath *path,
 670                         GtkTreeViewColumn *column,
 671                         GtkTreeModel *model)
 672 {
 673         int index;
 674         GtkTreeIter iter;
 675
 676         if (!gtk_tree_model_get_iter(model, &iter, path))
 677                 return;
 678         gtk_tree_model_get(model, &iter, DIVE_INDEX, &index, -1);
 679         edit_dive_info(get_dive(index));
 680 }
 681
 682 GtkWidget *dive_list_create(void)
 683 {
 684         GtkTreeSelection  *selection;
 685
 686         dive_list.model = gtk_list_store_new(DIVELIST_COLUMNS,
 687                                 G_TYPE_INT,                     /* index */
 688                                 G_TYPE_INT,                     /* nr */
 689                                 G_TYPE_INT,                     /* Date */
 690                                 G_TYPE_INT,                     /* Star rating */
 691                                 G_TYPE_INT,                     /* Depth */
 692                                 G_TYPE_INT,                     /* Duration */
 693                                 G_TYPE_INT,                     /* Temperature */
 694                                 G_TYPE_STRING,                  /* Cylinder */
 695                                 G_TYPE_INT,                     /* Nitrox */
 696                                 G_TYPE_INT,                     /* SAC */
 697                                 G_TYPE_INT,                     /* OTU */
 698                                 G_TYPE_STRING                   /* Location */
 699                                 );
 700         dive_list.tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(dive_list.model));
 701         set_divelist_font(divelist_font);
 702
 703         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
 704
 705         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_MULTIPLE);
 706         gtk_widget_set_size_request(dive_list.tree_view, 200, 200);
 707
 708         dive_list.nr = divelist_column(&dive_list, column + DIVE_NR);
 709         dive_list.date = divelist_column(&dive_list, column + DIVE_DATE);
 710         dive_list.stars = divelist_column(&dive_list, column + DIVE_RATING);
 711         dive_list.depth = divelist_column(&dive_list, column + DIVE_DEPTH);
 712         dive_list.duration = divelist_column(&dive_list, column + DIVE_DURATION);
 713         dive_list.temperature = divelist_column(&dive_list, column + DIVE_TEMPERATURE);
 714         dive_list.cylinder = divelist_column(&dive_list, column + DIVE_CYLINDER);
 715         dive_list.nitrox = divelist_column(&dive_list, column + DIVE_NITROX);
 716         dive_list.sac = divelist_column(&dive_list, column + DIVE_SAC);
 717         dive_list.otu = divelist_column(&dive_list, column + DIVE_OTU);
 718         dive_list.location = divelist_column(&dive_list, column + DIVE_LOCATION);
 719
 720         fill_dive_list();
 721
 722         g_object_set(G_OBJECT(dive_list.tree_view), "headers-visible", TRUE,
 723                                           "search-column", DIVE_LOCATION,
 724                                           "rules-hint", TRUE,
 725                                           NULL);
 726
 727         g_signal_connect_after(dive_list.tree_view, "realize", G_CALLBACK(realize_cb), NULL);
 728         g_signal_connect(dive_list.tree_view, "row-activated", G_CALLBACK(row_activated_cb), dive_list.model);
 729         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), dive_list.model);
 730
 731         dive_list.container_widget = gtk_scrolled_window_new(NULL, NULL);
 732         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(dive_list.container_widget),
 733                                GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 734         gtk_container_add(GTK_CONTAINER(dive_list.container_widget), dive_list.tree_view);
 735
 736         dive_list.changed = 0;
 737
 738         return dive_list.container_widget;
 739 }
 740
 741 void mark_divelist_changed(int changed)
 742 {
 743         dive_list.changed = changed;
 744 }
 745
 746 int unsaved_changes()
 747 {
 748         return dive_list.changed;
 749 }