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