mdw@git.distorted.org.uk Git - disorder/blob - disobedience/properties.c

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2006-2008 Richard Kettlewell
   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, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  18  * USA
  19  */
  20 /** @file disobedience/properties.c
  21  * @brief Track properties editor
  22  */
  23 #include "disobedience.h"
  24
  25 struct prefdata;
  26
  27 static void kickoff_namepart(struct prefdata *f);
  28 static void completed_namepart(struct prefdata *f);
  29 static const char *get_edited_namepart(struct prefdata *f);
  30 static void set_edited_namepart(struct prefdata *f, const char *value);
  31 static void set_namepart(struct prefdata *f, const char *value);
  32 static void set_namepart_completed(void *v, const char *err);
  33
  34 static void kickoff_string(struct prefdata *f);
  35 static void completed_string(struct prefdata *f);
  36 static const char *get_edited_string(struct prefdata *f);
  37 static void set_edited_string(struct prefdata *f, const char *value);
  38 static void set_string(struct prefdata *f, const char *value);
  39
  40 static void kickoff_boolean(struct prefdata *f);
  41 static void completed_boolean(struct prefdata *f);
  42 static const char *get_edited_boolean(struct prefdata *f);
  43 static void set_edited_boolean(struct prefdata *f, const char *value);
  44 static void set_boolean(struct prefdata *f, const char *value);
  45
  46 static void prefdata_completed(void *v, const char *err, const char *value);
  47 static void prefdata_onerror(struct callbackdata *cbd,
  48                              int code,
  49                              const char *msg);
  50 static struct callbackdata *make_callbackdata(struct prefdata *f);
  51 static void prefdata_completed_common(struct prefdata *f,
  52                                       const char *value);
  53
  54 static void properties_ok(GtkButton *button, gpointer userdata);
  55 static void properties_apply(GtkButton *button, gpointer userdata);
  56 static void properties_cancel(GtkButton *button, gpointer userdata);
  57
  58 static void properties_logged_in(const char *event,
  59                                  void *eventdata,
  60                                  void *callbackdata);
  61
  62 /** @brief Data for a single preference */
  63 struct prefdata {
  64   const char *track;
  65   int row;
  66   const struct pref *p;                 /**< @brief kind of preference */
  67   const char *value;                    /**< @brief value from server  */
  68   GtkWidget *widget;
  69 };
  70
  71 /* The type of a preference is the collection of callbacks needed to get,
  72  * display and set it */
  73 struct preftype {
  74   void (*kickoff)(struct prefdata *f);
  75   /* Kick off the request to fetch the pref from the server. */
  76
  77   void (*completed)(struct prefdata *f);
  78   /* Called when the value comes back in; creates the widget. */
  79
  80   const char *(*get_edited)(struct prefdata *f);
  81   /* Get the edited value from the widget. */
  82
  83   /** @brief Update the edited value */
  84   void (*set_edited)(struct prefdata *f, const char *value);
  85
  86   void (*set)(struct prefdata *f, const char *value);
  87   /* Set the new value and (if necessary) arrange for our display to update. */
  88 };
  89
  90 /* A namepart pref */
  91 static const struct preftype preftype_namepart = {
  92   kickoff_namepart,
  93   completed_namepart,
  94   get_edited_namepart,
  95   set_edited_namepart,
  96   set_namepart
  97 };
  98
  99 /* A string pref */
 100 static const struct preftype preftype_string = {
 101   kickoff_string,
 102   completed_string,
 103   get_edited_string,
 104   set_edited_string,
 105   set_string
 106 };
 107
 108 /* A boolean pref */
 109 static const struct preftype preftype_boolean = {
 110   kickoff_boolean,
 111   completed_boolean,
 112   get_edited_boolean,
 113   set_edited_boolean,
 114   set_boolean
 115 };
 116
 117 /* @brief The known prefs for each track */
 118 static const struct pref {
 119   const char *label;                    /**< @brief user-level description */
 120   const char *part;                     /**< @brief protocol-level tag */
 121   const char *default_value;            /**< @brief default value or NULL */
 122   const struct preftype *type;          /**< @brief underlying data type */
 123 } prefs[] = {
 124   { "Artist", "artist", 0, &preftype_namepart },
 125   { "Album", "album", 0, &preftype_namepart },
 126   { "Title", "title", 0, &preftype_namepart },
 127   { "Tags", "tags", "", &preftype_string },
 128   { "Weight", "weight", "90000", &preftype_string },
 129   { "Random", "pick_at_random", "1", &preftype_boolean },
 130 };
 131
 132 #define NPREFS (int)(sizeof prefs / sizeof *prefs)
 133
 134 /* Buttons that appear at the bottom of the window */
 135 static struct button buttons[] = {
 136   {
 137     GTK_STOCK_OK,
 138     properties_ok,
 139     "Apply all changes and close window",
 140     0
 141   },
 142   {
 143     GTK_STOCK_APPLY,
 144     properties_apply,
 145     "Apply all changes and keep window open",
 146     0
 147   },
 148   {
 149     GTK_STOCK_CANCEL,
 150     properties_cancel,
 151     "Discard all changes and close window",
 152     0
 153   },
 154 };
 155
 156 #define NBUTTONS (int)(sizeof buttons / sizeof *buttons)
 157
 158 static int prefs_unfilled;              /* Prefs remaining to get */
 159 static int prefs_total;                 /* Total prefs */
 160 static struct prefdata *prefdatas;      /* Current prefdatas */
 161 static GtkWidget *properties_window;
 162 static GtkWidget *properties_table;
 163 static struct progress_window *pw;
 164 static event_handle properties_event;
 165
 166 static void propagate_clicked(GtkButton attribute((unused)) *button,
 167                               gpointer userdata) {
 168   struct prefdata *f = (struct prefdata *)userdata, *g;
 169   int p;
 170   const char *value = f->p->type->get_edited(f);
 171
 172   for(p = 0; p < prefs_total; ++p) {
 173     g = &prefdatas[p];
 174     if(f->p == g->p && f != g)
 175       g->p->type->set_edited(g, value);
 176   }
 177 }
 178
 179 /** @brief Keypress handler */
 180 static gboolean properties_keypress(GtkWidget attribute((unused)) *widget,
 181                                     GdkEventKey *event,
 182                                     gpointer attribute((unused)) user_data) {
 183   if(event->state)
 184     return FALSE;
 185   switch(event->keyval) {
 186   case GDK_Return:
 187     properties_ok(0, 0);
 188     return TRUE;
 189   case GDK_Escape:
 190     properties_cancel(0, 0);
 191     return TRUE;
 192   default:
 193     return FALSE;
 194   }
 195 }
 196
 197 void properties(int ntracks, const char **tracks) {
 198   int n, m;
 199   struct prefdata *f;
 200   GtkWidget *buttonbox, *vbox, *label, *entry, *propagate;
 201
 202   /* If no tracks, do nothign */
 203   if(!ntracks)
 204     return;
 205   /* If there is a properties window open then just bring it to the
 206    * front.  It might not have the right values in... */
 207   if(properties_window) {
 208     if(!prefs_unfilled)
 209       gtk_window_present(GTK_WINDOW(properties_window));
 210     return;
 211   }
 212   assert(properties_table == 0);
 213   if(ntracks > INT_MAX / NPREFS) {
 214     popup_msg(GTK_MESSAGE_ERROR, "Too many tracks selected");
 215     return;
 216   }
 217   properties_event = event_register("logged-in", properties_logged_in, 0);
 218   /* Create a new properties window */
 219   properties_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 220   gtk_widget_set_style(properties_window, tool_style);
 221   g_signal_connect(properties_window, "destroy",
 222                    G_CALLBACK(gtk_widget_destroyed), &properties_window);
 223   /* Keyboard shortcuts */
 224   g_signal_connect(properties_window, "key-press-event",
 225                    G_CALLBACK(properties_keypress), 0);
 226   /* Most of the action is the table of preferences */
 227   properties_table = gtk_table_new((NPREFS + 1) * ntracks, 2 + ntracks > 1,
 228                                    FALSE);
 229   gtk_widget_set_style(properties_table, tool_style);
 230   g_signal_connect(properties_table, "destroy",
 231                    G_CALLBACK(gtk_widget_destroyed), &properties_table);
 232   gtk_window_set_title(GTK_WINDOW(properties_window), "Track Properties");
 233   /* Create labels for each pref of each track and kick off requests to the
 234    * server to fill in the values */
 235   prefs_total = NPREFS * ntracks;
 236   prefdatas = xcalloc(prefs_total, sizeof *prefdatas);
 237   for(n = 0; n < ntracks; ++n) {
 238     /* The track itself */
 239     /* Caption */
 240     label = gtk_label_new("Track");
 241     gtk_widget_set_style(label, tool_style);
 242     gtk_misc_set_alignment(GTK_MISC(label), 1, 0);
 243     gtk_table_attach(GTK_TABLE(properties_table),
 244                      label,
 245                      0, 1,
 246                      (NPREFS + 1) * n, (NPREFS + 1) * n + 1,
 247                      GTK_FILL, 0,
 248                      1, 1);
 249     /* The track name */
 250     entry = gtk_entry_new();
 251     gtk_widget_set_style(entry, tool_style);
 252     gtk_entry_set_text(GTK_ENTRY(entry), tracks[n]);
 253     gtk_editable_set_editable(GTK_EDITABLE(entry), FALSE);
 254     gtk_table_attach(GTK_TABLE(properties_table),
 255                      entry,
 256                      1, 2,
 257                      (NPREFS + 1) * n, (NPREFS + 1) * n + 1,
 258                      GTK_EXPAND|GTK_FILL, 0,
 259                      1, 1);
 260     /* Each preference */
 261     for(m = 0; m < NPREFS; ++m) {
 262       /* Caption */
 263       label = gtk_label_new(prefs[m].label);
 264       gtk_widget_set_style(label, tool_style);
 265       gtk_misc_set_alignment(GTK_MISC(label), 1, 0);
 266       gtk_table_attach(GTK_TABLE(properties_table),
 267                        label,
 268                        0, 1,
 269                        (NPREFS + 1) * n + 1 + m, (NPREFS + 1) * n + 2 + m,
 270                        GTK_FILL/*xoptions*/, 0/*yoptions*/,
 271                        1, 1);
 272       /* Editing the preference is specific */
 273       f = &prefdatas[NPREFS * n + m];
 274       f->track = tracks[n];
 275       f->row = (NPREFS + 1) * n + 1 + m;
 276       f->p = &prefs[m];
 277       prefs[m].type->kickoff(f);
 278       if(ntracks > 1) {
 279         /* Propagation button */
 280         propagate = iconbutton("propagate.png", "Copy to other tracks");
 281         g_signal_connect(G_OBJECT(propagate), "clicked",
 282                          G_CALLBACK(propagate_clicked), f);
 283         gtk_table_attach(GTK_TABLE(properties_table),
 284                          propagate,
 285                          2/*left*/, 3/*right*/,
 286                          (NPREFS + 1) * n + 1 + m, (NPREFS + 1) * n + 2 + m,
 287                          GTK_FILL/*xoptions*/, 0/*yoptions*/,
 288                          1/*xpadding*/, 1/*ypadding*/);
 289       }
 290     }
 291   }
 292   prefs_unfilled = prefs_total;
 293   /* Buttons */
 294   buttonbox = create_buttons(buttons, NBUTTONS);
 295   /* Put it all together */
 296   vbox = gtk_vbox_new(FALSE, 1);
 297   gtk_box_pack_start(GTK_BOX(vbox),
 298                      scroll_widget(properties_table),
 299                      TRUE, TRUE, 1);
 300   gtk_box_pack_start(GTK_BOX(vbox), buttonbox, FALSE, FALSE, 1);
 301   gtk_container_add(GTK_CONTAINER(properties_window), frame_widget(vbox, NULL));
 302   /* The table only really wants to be vertically scrollable */
 303   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(GTK_WIDGET(properties_table)->parent->parent),
 304                                  GTK_POLICY_NEVER,
 305                                  GTK_POLICY_AUTOMATIC);
 306   /* Zot any pre-existing progress window just in case */
 307   if(pw)
 308     progress_window_progress(pw, 0, 0);
 309   /* Pop up a progress bar while we're waiting */
 310   pw = progress_window_new("Fetching Track Properties");
 311 }
 312
 313 /* Everything is filled in now */
 314 static void prefdata_alldone(void) {
 315   if(pw) {
 316     progress_window_progress(pw, 0, 0);
 317     pw = 0;
 318   }
 319   /* Default size may be too small */
 320   gtk_window_set_default_size(GTK_WINDOW(properties_window), 480, 512);
 321   /* TODO: relate default size to required size more closely */
 322   gtk_widget_show_all(properties_window);
 323 }
 324
 325 /* Namepart preferences ---------------------------------------------------- */
 326
 327 static void kickoff_namepart(struct prefdata *f) {
 328   /* We ask for the display name part.  This is a bit bizarre if what we really
 329    * wanted was the underlying preference, but in fact it should always match
 330    * and will supply a sane default without having to know how to parse tracks
 331    * names (which implies knowing collection roots). */
 332   disorder_eclient_namepart(client, prefdata_completed, f->track, "display", f->p->part,
 333                             make_callbackdata(f));
 334 }
 335
 336 static void completed_namepart(struct prefdata *f) {
 337   if(!f->value) {
 338     /* No setting */
 339     f->value = "";
 340   }
 341   f->widget = gtk_entry_new();
 342 }
 343
 344 static const char *get_edited_namepart(struct prefdata *f) {
 345   return gtk_entry_get_text(GTK_ENTRY(f->widget));
 346 }
 347
 348 static void set_edited_namepart(struct prefdata *f, const char *value) {
 349   gtk_entry_set_text(GTK_ENTRY(f->widget), value);
 350 }
 351
 352 static void set_namepart(struct prefdata *f, const char *value) {
 353   char *s;
 354
 355   byte_xasprintf(&s, "trackname_display_%s", f->p->part);
 356   /* We don't know what the default is so can never unset.  This is a bug
 357    * relative to the original design, which is supposed to only ever allow for
 358    * non-trivial namepart preferences.  I suppose the server could spot a
 359    * default being set and translate it into an unset. */
 360   disorder_eclient_set(client, set_namepart_completed, f->track, s, value,
 361                        f);
 362 }
 363
 364 /* Called when we've set a namepart */
 365 static void set_namepart_completed(void *v, const char *err) {
 366   if(err)
 367     popup_protocol_error(0, err);
 368   else {
 369     struct prefdata *f = v;
 370
 371     namepart_update(f->track, "display", f->p->part);
 372   }
 373 }
 374
 375 /* String preferences ------------------------------------------------------ */
 376
 377 static void kickoff_string(struct prefdata *f) {
 378   disorder_eclient_get(client, prefdata_completed, f->track, f->p->part,
 379                        make_callbackdata(f));
 380 }
 381
 382 static void completed_string(struct prefdata *f) {
 383   if(!f->value)
 384     /* No setting, use the default value instead */
 385     f->value = f->p->default_value;
 386   f->widget = gtk_entry_new();
 387 }
 388
 389 static const char *get_edited_string(struct prefdata *f) {
 390   return gtk_entry_get_text(GTK_ENTRY(f->widget));
 391 }
 392
 393 static void set_edited_string(struct prefdata *f, const char *value) {
 394   gtk_entry_set_text(GTK_ENTRY(f->widget), value);
 395 }
 396
 397 static void set_string_completed(void attribute((unused)) *v,
 398                                  const char *err) {
 399   if(err)
 400     popup_protocol_error(0, err);
 401 }
 402
 403 static void set_string(struct prefdata *f, const char *value) {
 404   disorder_eclient_set(client, set_string_completed, f->track, f->p->part,
 405                        value, 0/*v*/);
 406 }
 407
 408 /* Boolean preferences ----------------------------------------------------- */
 409
 410 static void kickoff_boolean(struct prefdata *f) {
 411   disorder_eclient_get(client, prefdata_completed, f->track, f->p->part,
 412                        make_callbackdata(f));
 413 }
 414
 415 static void completed_boolean(struct prefdata *f) {
 416   f->widget = gtk_check_button_new();
 417   gtk_widget_set_style(f->widget, tool_style);
 418   if(!f->value)
 419     /* Not set, use the default */
 420     f->value = f->p->default_value;
 421 }
 422
 423 static const char *get_edited_boolean(struct prefdata *f) {
 424   return (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(f->widget))
 425           ? "1" : "0");
 426 }
 427
 428 static void set_edited_boolean(struct prefdata *f, const char *value) {
 429   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(f->widget),
 430                                strcmp(value, "0"));
 431 }
 432
 433 #define set_boolean_completed set_string_completed
 434
 435 static void set_boolean(struct prefdata *f, const char *value) {
 436   char *s;
 437
 438   byte_xasprintf(&s, "trackname_display_%s", f->p->part);
 439   disorder_eclient_set(client, set_boolean_completed,
 440                        f->track, f->p->part, value, 0/*v*/);
 441 }
 442
 443 /* Querying preferences ---------------------------------------------------- */
 444
 445 /* Make a suitable callbackdata */
 446 static struct callbackdata *make_callbackdata(struct prefdata *f) {
 447   struct callbackdata *cbd = xmalloc(sizeof *cbd);
 448
 449   cbd->onerror = prefdata_onerror;
 450   cbd->u.f = f;
 451   return cbd;
 452 }
 453
 454 /* No pref was set */
 455 static void prefdata_onerror(struct callbackdata *cbd,
 456                              int attribute((unused)) code,
 457                              const char attribute((unused)) *msg) {
 458   prefdata_completed_common(cbd->u.f, 0);
 459 }
 460
 461 /* Got the value of a pref */
 462 static void prefdata_completed(void *v, const char *err, const char *value) {
 463   if(err) {
 464   } else {
 465     struct callbackdata *cbd = v;
 466
 467     prefdata_completed_common(cbd->u.f, value);
 468   }
 469 }
 470
 471 static void prefdata_completed_common(struct prefdata *f,
 472                                       const char *value) {
 473   f->value = value;
 474   f->p->type->completed(f);
 475   f->p->type->set_edited(f, f->value);
 476   assert(f->value != 0);                /* Had better set a default */
 477   gtk_table_attach(GTK_TABLE(properties_table), f->widget,
 478                    1, 2,
 479                    f->row, f->row + 1,
 480                    GTK_EXPAND|GTK_FILL/*xoptions*/, 0/*yoptions*/,
 481                    1, 1);
 482   --prefs_unfilled;
 483   if(prefs_total)
 484     progress_window_progress(pw, prefs_total - prefs_unfilled, prefs_total);
 485   if(!prefs_unfilled)
 486     prefdata_alldone();
 487 }
 488
 489 /* Button callbacks -------------------------------------------------------- */
 490
 491 static void properties_ok(GtkButton *button,
 492                           gpointer userdata) {
 493   properties_apply(button, userdata);
 494   properties_cancel(button, userdata);
 495 }
 496
 497 static void properties_apply(GtkButton attribute((unused)) *button,
 498                              gpointer attribute((unused)) userdata) {
 499   int n;
 500   const char *edited;
 501   struct prefdata *f;
 502
 503   /* For each possible property we see if we've changed it and if so tell the
 504    * server */
 505   for(n = 0; n < prefs_total; ++n) {
 506     f = &prefdatas[n];
 507     edited = f->p->type->get_edited(f);
 508     if(strcmp(edited, f->value)) {
 509       /* The value has changed */
 510       f->p->type->set(f, edited);
 511       f->value = xstrdup(edited);
 512     }
 513   }
 514 }
 515
 516 static void properties_cancel(GtkButton attribute((unused)) *button,
 517                               gpointer attribute((unused)) userdata) {
 518   gtk_widget_destroy(properties_window);
 519   event_cancel(properties_event);
 520   properties_event = 0;
 521 }
 522
 523 /** @brief Called when we've just logged in
 524  *
 525  * Destroys the current properties window.
 526  */
 527 static void properties_logged_in(const char attribute((unused)) *event,
 528                                  void attribute((unused)) *eventdata,
 529                                  void attribute((unused)) *callbackdata) {
 530   if(properties_window)
 531     gtk_widget_destroy(properties_window);
 532 }
 533
 534 /*
 535 Local Variables:
 536 c-basic-offset:2
 537 comment-column:40
 538 fill-column:79
 539 indent-tabs-mode:nil
 540 End:
 541 */