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 3 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, see <http://www.gnu.org/licenses/>.
  17  */
  18 /** @file disobedience/properties.c
  19  * @brief Track properties editor
  20  */
  21 #include "disobedience.h"
  22
  23 struct prefdata;
  24
  25 static void kickoff_namepart(struct prefdata *f);
  26 static void completed_namepart(struct prefdata *f);
  27 static const char *get_edited_namepart(struct prefdata *f);
  28 static void set_edited_namepart(struct prefdata *f, const char *value);
  29 static void set_namepart(struct prefdata *f, const char *value);
  30 static void set_namepart_completed(void *v, const char *err);
  31
  32 static void kickoff_string(struct prefdata *f);
  33 static void completed_string(struct prefdata *f);
  34 static const char *get_edited_string(struct prefdata *f);
  35 static void set_edited_string(struct prefdata *f, const char *value);
  36 static void set_string(struct prefdata *f, const char *value);
  37
  38 static void kickoff_boolean(struct prefdata *f);
  39 static void completed_boolean(struct prefdata *f);
  40 static const char *get_edited_boolean(struct prefdata *f);
  41 static void set_edited_boolean(struct prefdata *f, const char *value);
  42 static void set_boolean(struct prefdata *f, const char *value);
  43
  44 static void prefdata_completed(void *v, const char *err, const char *value);
  45
  46 static void properties_ok(GtkButton *button, gpointer userdata);
  47 static void properties_apply(GtkButton *button, gpointer userdata);
  48 static void properties_cancel(GtkButton *button, gpointer userdata);
  49
  50 static void properties_logged_in(const char *event,
  51                                  void *eventdata,
  52                                  void *callbackdata);
  53
  54 /** @brief Data for a single preference */
  55 struct prefdata {
  56   const char *track;
  57   int row;
  58   const struct pref *p;                 /**< @brief kind of preference */
  59   const char *value;                    /**< @brief value from server  */
  60   GtkWidget *widget;
  61 };
  62
  63 /* The type of a preference is the collection of callbacks needed to get,
  64  * display and set it */
  65 struct preftype {
  66   void (*kickoff)(struct prefdata *f);
  67   /* Kick off the request to fetch the pref from the server. */
  68
  69   void (*completed)(struct prefdata *f);
  70   /* Called when the value comes back in; creates the widget. */
  71
  72   const char *(*get_edited)(struct prefdata *f);
  73   /* Get the edited value from the widget. */
  74
  75   /** @brief Update the edited value */
  76   void (*set_edited)(struct prefdata *f, const char *value);
  77
  78   void (*set)(struct prefdata *f, const char *value);
  79   /* Set the new value and (if necessary) arrange for our display to update. */
  80 };
  81
  82 /* A namepart pref */
  83 static const struct preftype preftype_namepart = {
  84   kickoff_namepart,
  85   completed_namepart,
  86   get_edited_namepart,
  87   set_edited_namepart,
  88   set_namepart
  89 };
  90
  91 /* A string pref */
  92 static const struct preftype preftype_string = {
  93   kickoff_string,
  94   completed_string,
  95   get_edited_string,
  96   set_edited_string,
  97   set_string
  98 };
  99
 100 /* A boolean pref */
 101 static const struct preftype preftype_boolean = {
 102   kickoff_boolean,
 103   completed_boolean,
 104   get_edited_boolean,
 105   set_edited_boolean,
 106   set_boolean
 107 };
 108
 109 /* @brief The known prefs for each track */
 110 static const struct pref {
 111   const char *label;                    /**< @brief user-level description */
 112   const char *part;                     /**< @brief protocol-level tag */
 113   const char *default_value;            /**< @brief default value or NULL */
 114   const struct preftype *type;          /**< @brief underlying data type */
 115 } prefs[] = {
 116   { "Artist", "artist", 0, &preftype_namepart },
 117   { "Album", "album", 0, &preftype_namepart },
 118   { "Title", "title", 0, &preftype_namepart },
 119   { "Tags", "tags", "", &preftype_string },
 120   { "Weight", "weight", "90000", &preftype_string },
 121   { "Random", "pick_at_random", "1", &preftype_boolean },
 122 };
 123
 124 #define NPREFS (int)(sizeof prefs / sizeof *prefs)
 125
 126 /* Buttons that appear at the bottom of the window */
 127 static struct button buttons[] = {
 128   {
 129     GTK_STOCK_OK,
 130     properties_ok,
 131     "Apply all changes and close window",
 132     0
 133   },
 134   {
 135     GTK_STOCK_APPLY,
 136     properties_apply,
 137     "Apply all changes and keep window open",
 138     0
 139   },
 140   {
 141     GTK_STOCK_CANCEL,
 142     properties_cancel,
 143     "Discard all changes and close window",
 144     0
 145   },
 146 };
 147
 148 #define NBUTTONS (int)(sizeof buttons / sizeof *buttons)
 149
 150 static int prefs_unfilled;              /* Prefs remaining to get */
 151 static int prefs_total;                 /* Total prefs */
 152 static struct prefdata *prefdatas;      /* Current prefdatas */
 153 static GtkWidget *properties_window;
 154 static GtkWidget *properties_table;
 155 static struct progress_window *pw;
 156 static event_handle properties_event;
 157
 158 static void propagate_clicked(GtkButton attribute((unused)) *button,
 159                               gpointer userdata) {
 160   struct prefdata *f = (struct prefdata *)userdata, *g;
 161   int p;
 162   const char *value = f->p->type->get_edited(f);
 163
 164   for(p = 0; p < prefs_total; ++p) {
 165     g = &prefdatas[p];
 166     if(f->p == g->p && f != g)
 167       g->p->type->set_edited(g, value);
 168   }
 169 }
 170
 171 /** @brief Keypress handler */
 172 static gboolean properties_keypress(GtkWidget attribute((unused)) *widget,
 173                                     GdkEventKey *event,
 174                                     gpointer attribute((unused)) user_data) {
 175   if(event->state)
 176     return FALSE;
 177   switch(event->keyval) {
 178   case GDK_Return:
 179     properties_ok(0, 0);
 180     return TRUE;
 181   case GDK_Escape:
 182     properties_cancel(0, 0);
 183     return TRUE;
 184   default:
 185     return FALSE;
 186   }
 187 }
 188
 189 void properties(int ntracks, const char **tracks) {
 190   int n, m;
 191   struct prefdata *f;
 192   GtkWidget *buttonbox, *vbox, *label, *entry, *propagate;
 193
 194   /* If no tracks, do nothign */
 195   if(!ntracks)
 196     return;
 197   /* If there is a properties window open then just bring it to the
 198    * front.  It might not have the right values in... */
 199   if(properties_window) {
 200     if(!prefs_unfilled)
 201       gtk_window_present(GTK_WINDOW(properties_window));
 202     return;
 203   }
 204   assert(properties_table == 0);
 205   if(ntracks > INT_MAX / NPREFS) {
 206     popup_msg(GTK_MESSAGE_ERROR, "Too many tracks selected");
 207     return;
 208   }
 209   properties_event = event_register("logged-in", properties_logged_in, 0);
 210   /* Create a new properties window */
 211   properties_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 212   gtk_widget_set_style(properties_window, tool_style);
 213   g_signal_connect(properties_window, "destroy",
 214                    G_CALLBACK(gtk_widget_destroyed), &properties_window);
 215   /* Keyboard shortcuts */
 216   g_signal_connect(properties_window, "key-press-event",
 217                    G_CALLBACK(properties_keypress), 0);
 218   /* Most of the action is the table of preferences */
 219   properties_table = gtk_table_new((NPREFS + 1) * ntracks, 2 + ntracks > 1,
 220                                    FALSE);
 221   gtk_widget_set_style(properties_table, tool_style);
 222   g_signal_connect(properties_table, "destroy",
 223                    G_CALLBACK(gtk_widget_destroyed), &properties_table);
 224   gtk_window_set_title(GTK_WINDOW(properties_window), "Track Properties");
 225   /* Create labels for each pref of each track and kick off requests to the
 226    * server to fill in the values */
 227   prefs_total = NPREFS * ntracks;
 228   prefdatas = xcalloc(prefs_total, sizeof *prefdatas);
 229   for(n = 0; n < ntracks; ++n) {
 230     /* The track itself */
 231     /* Caption */
 232     label = gtk_label_new("Track");
 233     gtk_widget_set_style(label, tool_style);
 234     gtk_misc_set_alignment(GTK_MISC(label), 1, 0);
 235     gtk_table_attach(GTK_TABLE(properties_table),
 236                      label,
 237                      0, 1,
 238                      (NPREFS + 1) * n, (NPREFS + 1) * n + 1,
 239                      GTK_FILL, 0,
 240                      1, 1);
 241     /* The track name */
 242     entry = gtk_entry_new();
 243     gtk_widget_set_style(entry, tool_style);
 244     gtk_entry_set_text(GTK_ENTRY(entry), tracks[n]);
 245     gtk_editable_set_editable(GTK_EDITABLE(entry), FALSE);
 246     gtk_table_attach(GTK_TABLE(properties_table),
 247                      entry,
 248                      1, 2,
 249                      (NPREFS + 1) * n, (NPREFS + 1) * n + 1,
 250                      GTK_EXPAND|GTK_FILL, 0,
 251                      1, 1);
 252     /* Each preference */
 253     for(m = 0; m < NPREFS; ++m) {
 254       /* Caption */
 255       label = gtk_label_new(prefs[m].label);
 256       gtk_widget_set_style(label, tool_style);
 257       gtk_misc_set_alignment(GTK_MISC(label), 1, 0);
 258       gtk_table_attach(GTK_TABLE(properties_table),
 259                        label,
 260                        0, 1,
 261                        (NPREFS + 1) * n + 1 + m, (NPREFS + 1) * n + 2 + m,
 262                        GTK_FILL/*xoptions*/, 0/*yoptions*/,
 263                        1, 1);
 264       /* Editing the preference is specific */
 265       f = &prefdatas[NPREFS * n + m];
 266       f->track = tracks[n];
 267       f->row = (NPREFS + 1) * n + 1 + m;
 268       f->p = &prefs[m];
 269       prefs[m].type->kickoff(f);
 270       if(ntracks > 1) {
 271         /* Propagation button */
 272         propagate = iconbutton("propagate.png", "Copy to other tracks");
 273         g_signal_connect(G_OBJECT(propagate), "clicked",
 274                          G_CALLBACK(propagate_clicked), f);
 275         gtk_table_attach(GTK_TABLE(properties_table),
 276                          propagate,
 277                          2/*left*/, 3/*right*/,
 278                          (NPREFS + 1) * n + 1 + m, (NPREFS + 1) * n + 2 + m,
 279                          GTK_FILL/*xoptions*/, 0/*yoptions*/,
 280                          1/*xpadding*/, 1/*ypadding*/);
 281       }
 282     }
 283   }
 284   prefs_unfilled = prefs_total;
 285   /* Buttons */
 286   buttonbox = create_buttons(buttons, NBUTTONS);
 287   /* Put it all together */
 288   vbox = gtk_vbox_new(FALSE, 1);
 289   gtk_box_pack_start(GTK_BOX(vbox),
 290                      scroll_widget(properties_table),
 291                      TRUE, TRUE, 1);
 292   gtk_box_pack_start(GTK_BOX(vbox), buttonbox, FALSE, FALSE, 1);
 293   gtk_container_add(GTK_CONTAINER(properties_window), frame_widget(vbox, NULL));
 294   /* The table only really wants to be vertically scrollable */
 295   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(GTK_WIDGET(properties_table)->parent->parent),
 296                                  GTK_POLICY_NEVER,
 297                                  GTK_POLICY_AUTOMATIC);
 298   /* Zot any pre-existing progress window just in case */
 299   if(pw)
 300     progress_window_progress(pw, 0, 0);
 301   /* Pop up a progress bar while we're waiting */
 302   pw = progress_window_new("Fetching Track Properties");
 303 }
 304
 305 /* Everything is filled in now */
 306 static void prefdata_alldone(void) {
 307   if(pw) {
 308     progress_window_progress(pw, 0, 0);
 309     pw = 0;
 310   }
 311   /* Default size may be too small */
 312   gtk_window_set_default_size(GTK_WINDOW(properties_window), 480, 512);
 313   /* TODO: relate default size to required size more closely */
 314   gtk_widget_show_all(properties_window);
 315 }
 316
 317 /* Namepart preferences ---------------------------------------------------- */
 318
 319 static void kickoff_namepart(struct prefdata *f) {
 320   /* We ask for the display name part.  This is a bit bizarre if what we really
 321    * wanted was the underlying preference, but in fact it should always match
 322    * and will supply a sane default without having to know how to parse tracks
 323    * names (which implies knowing collection roots). */
 324   disorder_eclient_namepart(client, prefdata_completed,
 325                             f->track, "display", f->p->part, f);
 326 }
 327
 328 static void completed_namepart(struct prefdata *f) {
 329   if(!f->value) {
 330     /* No setting */
 331     f->value = "";
 332   }
 333   f->widget = gtk_entry_new();
 334 }
 335
 336 static const char *get_edited_namepart(struct prefdata *f) {
 337   return gtk_entry_get_text(GTK_ENTRY(f->widget));
 338 }
 339
 340 static void set_edited_namepart(struct prefdata *f, const char *value) {
 341   gtk_entry_set_text(GTK_ENTRY(f->widget), value);
 342 }
 343
 344 static void set_namepart(struct prefdata *f, const char *value) {
 345   char *s;
 346
 347   byte_xasprintf(&s, "trackname_display_%s", f->p->part);
 348   /* We don't know what the default is so can never unset.  This is a bug
 349    * relative to the original design, which is supposed to only ever allow for
 350    * non-trivial namepart preferences.  I suppose the server could spot a
 351    * default being set and translate it into an unset. */
 352   disorder_eclient_set(client, set_namepart_completed, f->track, s, value,
 353                        f);
 354 }
 355
 356 /* Called when we've set a namepart */
 357 static void set_namepart_completed(void *v, const char *err) {
 358   if(err)
 359     popup_protocol_error(0, err);
 360   else {
 361     struct prefdata *f = v;
 362
 363     namepart_update(f->track, "display", f->p->part);
 364   }
 365 }
 366
 367 /* String preferences ------------------------------------------------------ */
 368
 369 static void kickoff_string(struct prefdata *f) {
 370   disorder_eclient_get(client, prefdata_completed, f->track, f->p->part, f);
 371 }
 372
 373 static void completed_string(struct prefdata *f) {
 374   if(!f->value)
 375     /* No setting, use the default value instead */
 376     f->value = f->p->default_value;
 377   f->widget = gtk_entry_new();
 378 }
 379
 380 static const char *get_edited_string(struct prefdata *f) {
 381   return gtk_entry_get_text(GTK_ENTRY(f->widget));
 382 }
 383
 384 static void set_edited_string(struct prefdata *f, const char *value) {
 385   gtk_entry_set_text(GTK_ENTRY(f->widget), value);
 386 }
 387
 388 static void set_string_completed(void attribute((unused)) *v,
 389                                  const char *err) {
 390   if(err)
 391     popup_protocol_error(0, err);
 392 }
 393
 394 static void set_string(struct prefdata *f, const char *value) {
 395   disorder_eclient_set(client, set_string_completed, f->track, f->p->part,
 396                        value, 0/*v*/);
 397 }
 398
 399 /* Boolean preferences ----------------------------------------------------- */
 400
 401 static void kickoff_boolean(struct prefdata *f) {
 402   disorder_eclient_get(client, prefdata_completed, f->track, f->p->part, f);
 403 }
 404
 405 static void completed_boolean(struct prefdata *f) {
 406   f->widget = gtk_check_button_new();
 407   gtk_widget_set_style(f->widget, tool_style);
 408   if(!f->value)
 409     /* Not set, use the default */
 410     f->value = f->p->default_value;
 411 }
 412
 413 static const char *get_edited_boolean(struct prefdata *f) {
 414   return (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(f->widget))
 415           ? "1" : "0");
 416 }
 417
 418 static void set_edited_boolean(struct prefdata *f, const char *value) {
 419   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(f->widget),
 420                                strcmp(value, "0"));
 421 }
 422
 423 #define set_boolean_completed set_string_completed
 424
 425 static void set_boolean(struct prefdata *f, const char *value) {
 426   char *s;
 427
 428   byte_xasprintf(&s, "trackname_display_%s", f->p->part);
 429   disorder_eclient_set(client, set_boolean_completed,
 430                        f->track, f->p->part, value, 0/*v*/);
 431 }
 432
 433 /* Querying preferences ---------------------------------------------------- */
 434
 435 static void prefdata_completed(void *v, const char *err, const char *value) {
 436   struct prefdata *const f = v;
 437
 438   if(err)
 439     popup_protocol_error(0, err);
 440   f->value = value;
 441   f->p->type->completed(f);
 442   f->p->type->set_edited(f, f->value);
 443   assert(f->value != 0);                /* Had better set a default */
 444   gtk_table_attach(GTK_TABLE(properties_table), f->widget,
 445                    1, 2,
 446                    f->row, f->row + 1,
 447                    GTK_EXPAND|GTK_FILL/*xoptions*/, 0/*yoptions*/,
 448                    1, 1);
 449   --prefs_unfilled;
 450   if(prefs_total)
 451     progress_window_progress(pw, prefs_total - prefs_unfilled, prefs_total);
 452   if(!prefs_unfilled)
 453     prefdata_alldone();
 454 }
 455
 456 /* Button callbacks -------------------------------------------------------- */
 457
 458 static void properties_ok(GtkButton *button,
 459                           gpointer userdata) {
 460   properties_apply(button, userdata);
 461   properties_cancel(button, userdata);
 462 }
 463
 464 static void properties_apply(GtkButton attribute((unused)) *button,
 465                              gpointer attribute((unused)) userdata) {
 466   int n;
 467   const char *edited;
 468   struct prefdata *f;
 469
 470   /* For each possible property we see if we've changed it and if so tell the
 471    * server */
 472   for(n = 0; n < prefs_total; ++n) {
 473     f = &prefdatas[n];
 474     edited = f->p->type->get_edited(f);
 475     if(strcmp(edited, f->value)) {
 476       /* The value has changed */
 477       f->p->type->set(f, edited);
 478       f->value = xstrdup(edited);
 479     }
 480   }
 481 }
 482
 483 static void properties_cancel(GtkButton attribute((unused)) *button,
 484                               gpointer attribute((unused)) userdata) {
 485   gtk_widget_destroy(properties_window);
 486   event_cancel(properties_event);
 487   properties_event = 0;
 488 }
 489
 490 /** @brief Called when we've just logged in
 491  *
 492  * Destroys the current properties window.
 493  */
 494 static void properties_logged_in(const char attribute((unused)) *event,
 495                                  void attribute((unused)) *eventdata,
 496                                  void attribute((unused)) *callbackdata) {
 497   if(properties_window)
 498     gtk_widget_destroy(properties_window);
 499 }
 500
 501 /*
 502 Local Variables:
 503 c-basic-offset:2
 504 comment-column:40
 505 fill-column:79
 506 indent-tabs-mode:nil
 507 End:
 508 */