chiark - git - mdw - disorder/blob - disobedience/playlists.c

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2008, 2009 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/playlists.c
  21  * @brief Playlist for Disobedience
  22  *
  23  * The playlists management window contains:
  24  * - a list of all playlists
  25  * - an add button
  26  * - a delete button
  27  * - a drag+drop capable view of the playlist
  28  * - a close button
  29  */
  30 #include "disobedience.h"
  31 #include "queue-generic.h"
  32 #include "popup.h"
  33 #include "validity.h"
  34
  35 #if PLAYLISTS
  36
  37 static void playlists_updated(void *v,
  38                               const char *err,
  39                               int nvec, char **vec);
  40 static void playlists_fill_tracks(const char *event,
  41                                   void *eventdata,
  42                                   void *callbackdata);
  43
  44 /** @brief Playlist editing window */
  45 static GtkWidget *playlists_window;
  46
  47 /** @brief Tree model for list of playlists */
  48 static GtkListStore *playlists_list;
  49
  50 /** @brief Selection for list of playlists */
  51 static GtkTreeSelection *playlists_selection;
  52
  53 /** @brief Currently selected playlist */
  54 static const char *playlists_selected;
  55
  56 /** @brief Delete button */
  57 static GtkWidget *playlists_delete_button;
  58
  59 /** @brief Current list of playlists or NULL */
  60 char **playlists;
  61
  62 /** @brief Count of playlists */
  63 int nplaylists;
  64
  65 /** @brief Columns for the playlist editor */
  66 static const struct queue_column playlist_columns[] = {
  67   { "Artist", column_namepart, "artist", COL_EXPAND|COL_ELLIPSIZE },
  68   { "Album",  column_namepart, "album",  COL_EXPAND|COL_ELLIPSIZE },
  69   { "Title",  column_namepart, "title",  COL_EXPAND|COL_ELLIPSIZE },
  70   { "Length", column_length,   0,        COL_RIGHT }
  71 };
  72
  73 /** @brief Pop-up menu for playlist editor */
  74 // TODO some of these may not be generic enough yet - check!
  75 static struct menuitem playlist_menuitems[] = {
  76   { "Track properties", ql_properties_activate, ql_properties_sensitive, 0, 0 },
  77   { "Play track", ql_play_activate, ql_play_sensitive, 0, 0 },
  78   //{ "Play playlist", ql_playall_activate, ql_playall_sensitive, 0, 0 },
  79   { "Remove track from queue", ql_remove_activate, ql_remove_sensitive, 0, 0 },
  80   { "Select all tracks", ql_selectall_activate, ql_selectall_sensitive, 0, 0 },
  81   { "Deselect all tracks", ql_selectnone_activate, ql_selectnone_sensitive, 0, 0 },
  82 };
  83
  84 /** @brief Queuelike for editing a playlist */
  85 static struct queuelike ql_playlist = {
  86   .name = "playlist",
  87   .columns = playlist_columns,
  88   .ncolumns = sizeof playlist_columns / sizeof *playlist_columns,
  89   .menuitems = playlist_menuitems,
  90   .nmenuitems = sizeof playlist_menuitems / sizeof *playlist_menuitems,
  91   //.drop = playlist_drop  //TODO
  92 };
  93
  94 /* Maintaining the list of playlists ---------------------------------------- */
  95
  96 /** @brief Schedule an update to the list of playlists */
  97 static void playlists_update(const char attribute((unused)) *event,
  98                              void attribute((unused)) *eventdata,
  99                              void attribute((unused)) *callbackdata) {
 100   disorder_eclient_playlists(client, playlists_updated, 0);
 101 }
 102
 103 /** @brief qsort() callback for playlist name comparison */
 104 static int playlistcmp(const void *ap, const void *bp) {
 105   const char *a = *(char **)ap, *b = *(char **)bp;
 106   const char *ad = strchr(a, '.'), *bd = strchr(b, '.');
 107   int c;
 108
 109   /* Group owned playlists by owner */
 110   if(ad && bd) {
 111     const int adn = ad - a, bdn = bd - b;
 112     if((c = strncmp(a, b, adn < bdn ? adn : bdn)))
 113       return c;
 114     /* Lexical order within playlists of a single owner */
 115     return strcmp(ad + 1, bd + 1);
 116   }
 117
 118   /* Owned playlists after shared ones */
 119   if(ad) {
 120     return 1;
 121   } else if(bd) {
 122     return -1;
 123   }
 124
 125   /* Lexical order of shared playlists */
 126   return strcmp(a, b);
 127 }
 128
 129 /** @brief Called with a new list of playlists */
 130 static void playlists_updated(void attribute((unused)) *v,
 131                               const char *err,
 132                               int nvec, char **vec) {
 133   if(err) {
 134     playlists = 0;
 135     nplaylists = -1;
 136     /* Probably means server does not support playlists */
 137   } else {
 138     playlists = vec;
 139     nplaylists = nvec;
 140     qsort(playlists, nplaylists, sizeof (char *), playlistcmp);
 141   }
 142   /* Tell our consumers */
 143   event_raise("playlists-updated", 0);
 144 }
 145
 146 /* Playlists menu ----------------------------------------------------------- */
 147
 148 /** @brief Play received playlist contents
 149  *
 150  * Passed as a completion callback by menu_activate_playlist().
 151  */
 152 static void playlist_play_content(void attribute((unused)) *v,
 153                                   const char *err,
 154                                   int nvec, char **vec) {
 155   if(err) {
 156     popup_protocol_error(0, err);
 157     return;
 158   }
 159   for(int n = 0; n < nvec; ++n)
 160     disorder_eclient_play(client, vec[n], NULL, NULL);
 161 }
 162
 163 /** @brief Called to activate a playlist
 164  *
 165  * Called when the menu item for a playlist is clicked.
 166  */
 167 static void menu_activate_playlist(GtkMenuItem *menuitem,
 168                                    gpointer attribute((unused)) user_data) {
 169   GtkLabel *label = GTK_LABEL(GTK_BIN(menuitem)->child);
 170   const char *playlist = gtk_label_get_text(label);
 171
 172   disorder_eclient_playlist_get(client, playlist_play_content, playlist, NULL);
 173 }
 174
 175 /** @brief Called when the playlists change */
 176 static void menu_playlists_changed(const char attribute((unused)) *event,
 177                                    void attribute((unused)) *eventdata,
 178                                    void attribute((unused)) *callbackdata) {
 179   if(!playlists_menu)
 180     return;                             /* OMG too soon */
 181   GtkMenuShell *menu = GTK_MENU_SHELL(playlists_menu);
 182   /* TODO: we could be more sophisticated and only insert/remove widgets as
 183    * needed.  The current logic trashes the selection which is not acceptable
 184    * and interacts badly with one playlist being currently locked and
 185    * edited. */
 186   while(menu->children)
 187     gtk_container_remove(GTK_CONTAINER(menu), GTK_WIDGET(menu->children->data));
 188   /* NB nplaylists can be -1 as well as 0 */
 189   for(int n = 0; n < nplaylists; ++n) {
 190     GtkWidget *w = gtk_menu_item_new_with_label(playlists[n]);
 191     g_signal_connect(w, "activate", G_CALLBACK(menu_activate_playlist), 0);
 192     gtk_widget_show(w);
 193     gtk_menu_shell_append(menu, w);
 194   }
 195   gtk_widget_set_sensitive(menu_playlists_widget,
 196                            nplaylists > 0);
 197   gtk_widget_set_sensitive(menu_editplaylists_widget,
 198                            nplaylists >= 0);
 199 }
 200
 201 /* Popup to create a new playlist ------------------------------------------- */
 202
 203 /** @brief New-playlist popup */
 204 static GtkWidget *playlist_new_window;
 205
 206 /** @brief Text entry in new-playlist popup */
 207 static GtkWidget *playlist_new_entry;
 208
 209 static GtkWidget *playlist_new_info;
 210
 211 static GtkWidget *playlist_new_shared;
 212 static GtkWidget *playlist_new_public;
 213 static GtkWidget *playlist_new_private;
 214
 215 /** @brief Get entered new-playlist details */
 216 static void playlist_new_details(char **namep,
 217                                  char **fullnamep,
 218                                  gboolean *sharedp,
 219                                  gboolean *publicp,
 220                                  gboolean *privatep) {
 221   gboolean shared, public, private;
 222   g_object_get(playlist_new_shared, "active", &shared, (char *)NULL);
 223   g_object_get(playlist_new_public, "active", &public, (char *)NULL);
 224   g_object_get(playlist_new_private, "active", &private, (char *)NULL);
 225   char *gname = gtk_editable_get_chars(GTK_EDITABLE(playlist_new_entry),
 226                                        0, -1); /* name owned by calle */
 227   char *name = xstrdup(gname);
 228   g_free(gname);
 229   if(sharedp) *sharedp = shared;
 230   if(publicp) *publicp = public;
 231   if(privatep) *privatep = private;
 232   if(namep) *namep = name;
 233   if(fullnamep) {
 234     if(*sharedp) *fullnamep = *namep;
 235     else byte_xasprintf(fullnamep, "%s.%s", config->username, name);
 236   }
 237 }
 238
 239 /** @brief Called when the newly created playlist has unlocked */
 240 static void playlist_new_unlocked(void attribute((unused)) *v, const char *err) {
 241   if(err)
 242     popup_protocol_error(0, err);
 243   gtk_widget_destroy(playlist_new_window);
 244 }
 245
 246 /** @brief Called when the new playlist has been created */
 247 static void playlist_new_created(void attribute((unused)) *v, const char *err) {
 248   if(err) {
 249     popup_protocol_error(0, err);
 250     return;
 251   }
 252   disorder_eclient_playlist_unlock(client, playlist_new_unlocked, NULL);
 253   // TODO arrange for the new playlist to be selected
 254 }
 255
 256 /** @brief Called when the proposed new playlist's contents have been retrieved
 257  *
 258  * ...or rather, normally, when it's been reported that it does not exist.
 259  */
 260 static void playlist_new_retrieved(void *v, const char *err,
 261                                    int nvec,
 262                                    char attribute((unused)) **vec) {
 263   char *fullname = v;
 264   if(!err && nvec != -1)
 265     /* A rare case but not in principle impossible */
 266     err = "A playlist with that name already exists.";
 267   if(err) {
 268     popup_protocol_error(0, err);
 269     disorder_eclient_playlist_unlock(client, playlist_new_unlocked, fullname);
 270     return;
 271   }
 272   gboolean shared, public, private;
 273   playlist_new_details(0, 0, &shared, &public, &private);
 274   disorder_eclient_playlist_set_share(client, playlist_new_created, fullname,
 275                                       public ? "public"
 276                                       : private ? "private"
 277                                       : "shared",
 278                                       fullname);
 279 }
 280
 281 /** @brief Called when the proposed new playlist has been locked */
 282 static void playlist_new_locked(void *v, const char *err) {
 283   char *fullname = v;
 284   if(err) {
 285     popup_protocol_error(0, err);
 286     return;
 287   }
 288   disorder_eclient_playlist_get(client, playlist_new_retrieved,
 289                                 fullname, fullname);
 290 }
 291
 292 /** @brief Called when 'ok' is clicked in new-playlist popup */
 293 static void playlist_new_ok(GtkButton attribute((unused)) *button,
 294                             gpointer attribute((unused)) userdata) {
 295   gboolean shared, public, private;
 296   char *name, *fullname;
 297   playlist_new_details(&name, &fullname, &shared, &public, &private);
 298
 299   /* We need to:
 300    * - lock the playlist
 301    * - check it doesn't exist
 302    * - set sharing (which will create it empty
 303    * - unlock it
 304    *
 305    * TODO we should freeze the window while this is going on
 306    */
 307   disorder_eclient_playlist_lock(client, playlist_new_locked, fullname,
 308                                  fullname);
 309 }
 310
 311 /** @brief Called when 'cancel' is clicked in new-playlist popup */
 312 static void playlist_new_cancel(GtkButton attribute((unused)) *button,
 313                                 gpointer attribute((unused)) userdata) {
 314   gtk_widget_destroy(playlist_new_window);
 315 }
 316
 317 /** @brief Buttons for new-playlist popup */
 318 static struct button playlist_new_buttons[] = {
 319   {
 320     .stock = GTK_STOCK_OK,
 321     .clicked = playlist_new_ok,
 322     .tip = "Create new playlist"
 323   },
 324   {
 325     .stock = GTK_STOCK_CANCEL,
 326     .clicked = playlist_new_cancel,
 327     .tip = "Do not create new playlist"
 328   }
 329 };
 330 #define NPLAYLIST_NEW_BUTTONS (sizeof playlist_new_buttons / sizeof *playlist_new_buttons)
 331
 332 /** @brief Test whether the new-playlist window settings are valid
 333  * @return NULL on success or an error string if not
 334  */
 335 static const char *playlist_new_valid(void) {
 336   gboolean shared, public, private;
 337   char *name, *fullname;
 338   playlist_new_details(&name, &fullname, &shared, &public, &private);
 339   if(!(shared || public || private))
 340     return "No type set.";
 341   if(!*name)
 342     return "";
 343   /* See if the result is valid */
 344   if(!valid_username(name)
 345      || playlist_parse_name(fullname, NULL, NULL))
 346     return "Not a valid playlist name.";
 347   /* See if the result clashes with an existing name */
 348   for(int n = 0; n < nplaylists; ++n)
 349     if(!strcmp(playlists[n], fullname)) {
 350       if(shared)
 351         return "A shared playlist with that name already exists.";
 352       else
 353         return "You already have a playlist with that name.";
 354     }
 355   /* As far as we can tell creation would work */
 356   return NULL;
 357 }
 358
 359 /** @brief Called to update new playlist window state
 360  *
 361  * This is called whenever one the text entry or radio buttons changed, and
 362  * also when the set of known playlists changes.  It determines whether the new
 363  * playlist would be creatable and sets the sensitivity of the OK button
 364  * and info display accordingly.
 365  */
 366 static void playlist_new_changed(const char attribute((unused)) *event,
 367                                  void attribute((unused)) *eventdata,
 368                                  void attribute((unused)) *callbackdata) {
 369   if(!playlist_new_window)
 370     return;
 371   const char *reason = playlist_new_valid();
 372   gtk_widget_set_sensitive(playlist_new_buttons[0].widget,
 373                            !reason);
 374   gtk_label_set_text(GTK_LABEL(playlist_new_info), reason);
 375 }
 376
 377 /** @brief Called when some radio button in the new-playlist popup changes */
 378 static void playlist_new_button_toggled(GtkToggleButton attribute((unused)) tb,
 379                                         gpointer attribute((unused)) userdata) {
 380   playlist_new_changed(0,0,0);
 381 }
 382
 383 /** @brief Called when the text entry field in the new-playlist popup changes */
 384 static void playlist_new_entry_edited(GtkEditable attribute((unused)) *editable,
 385                                       gpointer attribute((unused)) user_data) {
 386   playlist_new_changed(0,0,0);
 387 }
 388
 389 /** @brief Pop up a new window to enter the playlist name and details */
 390 static void playlist_new(void) {
 391   assert(playlist_new_window == NULL);
 392   playlist_new_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 393   g_signal_connect(playlist_new_window, "destroy",
 394                    G_CALLBACK(gtk_widget_destroyed), &playlist_new_window);
 395   gtk_window_set_title(GTK_WINDOW(playlist_new_window), "Create new playlist");
 396   /* Window will be modal, suppressing access to other windows */
 397   gtk_window_set_modal(GTK_WINDOW(playlist_new_window), TRUE);
 398   gtk_window_set_transient_for(GTK_WINDOW(playlist_new_window),
 399                                GTK_WINDOW(playlists_window));
 400
 401   /* Window contents will use a table (grid) layout */
 402   GtkWidget *table = gtk_table_new(3, 3, FALSE/*!homogeneous*/);
 403
 404   /* First row: playlist name */
 405   gtk_table_attach_defaults(GTK_TABLE(table),
 406                             gtk_label_new("Playlist name"),
 407                             0, 1, 0, 1);
 408   playlist_new_entry = gtk_entry_new();
 409   g_signal_connect(playlist_new_entry, "changed",
 410                    G_CALLBACK(playlist_new_entry_edited), NULL);
 411   gtk_table_attach_defaults(GTK_TABLE(table),
 412                             playlist_new_entry,
 413                             1, 3, 0, 1);
 414
 415   /* Second row: radio buttons to choose type */
 416   playlist_new_shared = gtk_radio_button_new_with_label(NULL, "shared");
 417   playlist_new_public
 418     = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_new_shared),
 419                                                   "public");
 420   playlist_new_private
 421     = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_new_shared),
 422                                                   "private");
 423   g_signal_connect(playlist_new_shared, "toggled",
 424                    G_CALLBACK(playlist_new_button_toggled), NULL);
 425   g_signal_connect(playlist_new_public, "toggled",
 426                    G_CALLBACK(playlist_new_button_toggled), NULL);
 427   g_signal_connect(playlist_new_private, "toggled",
 428                    G_CALLBACK(playlist_new_button_toggled), NULL);
 429   gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_shared, 0, 1, 1, 2);
 430   gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_public, 1, 2, 1, 2);
 431   gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_private, 2, 3, 1, 2);
 432
 433   /* Third row: info bar saying why not */
 434   playlist_new_info = gtk_label_new("");
 435   gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_info,
 436                             0, 3, 2, 3);
 437
 438   /* Fourth row: ok/cancel buttons */
 439   GtkWidget *hbox = create_buttons_box(playlist_new_buttons,
 440                                        NPLAYLIST_NEW_BUTTONS,
 441                                        gtk_hbox_new(FALSE, 0));
 442   gtk_table_attach_defaults(GTK_TABLE(table), hbox, 0, 3, 3, 4);
 443
 444   gtk_container_add(GTK_CONTAINER(playlist_new_window),
 445                     frame_widget(table, NULL));
 446
 447   /* Set initial state of OK button */
 448   playlist_new_changed(0,0,0);
 449
 450   /* TODO: return should = OK, escape should = cancel */
 451
 452   /* Display the window */
 453   gtk_widget_show_all(playlist_new_window);
 454 }
 455
 456 /* Playlists window (list of playlists) ------------------------------------- */
 457
 458 /** @brief (Re-)populate the playlist tree model */
 459 static void playlists_fill(const char attribute((unused)) *event,
 460                            void attribute((unused)) *eventdata,
 461                            void attribute((unused)) *callbackdata) {
 462   GtkTreeIter iter[1];
 463
 464   if(!playlists_window)
 465     return;
 466   if(!playlists_list)
 467     playlists_list = gtk_list_store_new(1, G_TYPE_STRING);
 468   const char *was_selected = playlists_selected;
 469   gtk_list_store_clear(playlists_list); /* clears playlists_selected */
 470   for(int n = 0; n < nplaylists; ++n) {
 471     gtk_list_store_insert_with_values(playlists_list, iter, n/*position*/,
 472                                       0, playlists[n],        /* column 0 */
 473                                       -1);                    /* no more cols */
 474     /* Reselect the selected playlist */
 475     if(was_selected && !strcmp(was_selected, playlists[n]))
 476       gtk_tree_selection_select_iter(playlists_selection, iter);
 477   }
 478 }
 479
 480 /** @brief Called when the selection might have changed */
 481 static void playlists_selection_changed(GtkTreeSelection attribute((unused)) *treeselection,
 482                                         gpointer attribute((unused)) user_data) {
 483   GtkTreeIter iter;
 484   char *gselected, *selected;
 485
 486   /* Identify the current selection */
 487   if(gtk_tree_selection_get_selected(playlists_selection, 0, &iter)) {
 488     gtk_tree_model_get(GTK_TREE_MODEL(playlists_list), &iter,
 489                        0, &gselected, -1);
 490     selected = xstrdup(gselected);
 491     g_free(gselected);
 492   } else
 493     selected = 0;
 494   /* Set button sensitivity according to the new state */
 495   if(selected)
 496     gtk_widget_set_sensitive(playlists_delete_button, 1);
 497   else
 498     gtk_widget_set_sensitive(playlists_delete_button, 0);
 499   /* Eliminate no-change cases */
 500   if(!selected && !playlists_selected)
 501     return;
 502   if(selected && playlists_selected && !strcmp(selected, playlists_selected))
 503     return;
 504   /* Record the new state */
 505   playlists_selected = selected;
 506   /* Re-initalize the queue */
 507   ql_new_queue(&ql_playlist, NULL);
 508   playlists_fill_tracks(NULL, (void *)playlists_selected, NULL);
 509 }
 510
 511 /** @brief Called when the 'add' button is pressed */
 512 static void playlists_add(GtkButton attribute((unused)) *button,
 513                           gpointer attribute((unused)) userdata) {
 514   /* Unselect whatever is selected TODO why?? */
 515   gtk_tree_selection_unselect_all(playlists_selection);
 516   playlist_new();
 517 }
 518
 519 /** @brief Called when playlist deletion completes */
 520 static void playlists_delete_completed(void attribute((unused)) *v,
 521                                        const char *err) {
 522   if(err)
 523     popup_protocol_error(0, err);
 524 }
 525
 526 /** @brief Called when the 'Delete' button is pressed */
 527 static void playlists_delete(GtkButton attribute((unused)) *button,
 528                              gpointer attribute((unused)) userdata) {
 529   GtkWidget *yesno;
 530   int res;
 531
 532   fprintf(stderr, "playlists_delete\n");
 533   if(!playlists_selected)
 534     return;                             /* shouldn't happen */
 535   yesno = gtk_message_dialog_new(GTK_WINDOW(playlists_window),
 536                                  GTK_DIALOG_MODAL,
 537                                  GTK_MESSAGE_QUESTION,
 538                                  GTK_BUTTONS_YES_NO,
 539                                  "Do you really want to delete playlist %s?"
 540                                  " This action cannot be undone.",
 541                                  playlists_selected);
 542   res = gtk_dialog_run(GTK_DIALOG(yesno));
 543   gtk_widget_destroy(yesno);
 544   if(res == GTK_RESPONSE_YES) {
 545     disorder_eclient_playlist_delete(client,
 546                                      playlists_delete_completed,
 547                                      playlists_selected,
 548                                      NULL);
 549   }
 550 }
 551
 552 /** @brief Table of buttons below the playlist list */
 553 static struct button playlists_buttons[] = {
 554   {
 555     GTK_STOCK_ADD,
 556     playlists_add,
 557     "Create a new playlist",
 558     0
 559   },
 560   {
 561     GTK_STOCK_REMOVE,
 562     playlists_delete,
 563     "Delete a playlist",
 564     0
 565   },
 566 };
 567 #define NPLAYLISTS_BUTTONS (sizeof playlists_buttons / sizeof *playlists_buttons)
 568
 569 /** @brief Create the list of playlists for the edit playlists window */
 570 static GtkWidget *playlists_window_list(void) {
 571   /* Create the list of playlist and populate it */
 572   playlists_fill(NULL, NULL, NULL);
 573   /* Create the tree view */
 574   GtkWidget *tree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(playlists_list));
 575   /* ...and the renderers for it */
 576   GtkCellRenderer *cr = gtk_cell_renderer_text_new();
 577   GtkTreeViewColumn *col = gtk_tree_view_column_new_with_attributes("Playlist",
 578                                                                     cr,
 579                                                                     "text", 0,
 580                                                                     NULL);
 581   gtk_tree_view_append_column(GTK_TREE_VIEW(tree), col);
 582   /* Get the selection for the view; set its mode; arrange for a callback when
 583    * it changes */
 584   playlists_selected = NULL;
 585   playlists_selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree));
 586   gtk_tree_selection_set_mode(playlists_selection, GTK_SELECTION_BROWSE);
 587   g_signal_connect(playlists_selection, "changed",
 588                    G_CALLBACK(playlists_selection_changed), NULL);
 589
 590   /* Create the control buttons */
 591   GtkWidget *buttons = create_buttons_box(playlists_buttons,
 592                                           NPLAYLISTS_BUTTONS,
 593                                           gtk_hbox_new(FALSE, 1));
 594   playlists_delete_button = playlists_buttons[1].widget;
 595
 596   playlists_selection_changed(NULL, NULL);
 597
 598   /* Buttons live below the list */
 599   GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
 600   gtk_box_pack_start(GTK_BOX(vbox), scroll_widget(tree), TRUE/*expand*/, TRUE/*fill*/, 0);
 601   gtk_box_pack_start(GTK_BOX(vbox), buttons, FALSE/*expand*/, FALSE, 0);
 602
 603   return vbox;
 604 }
 605
 606 /* Playlists window (edit current playlist) --------------------------------- */
 607
 608 /** @brief Called with new tracks for the playlist */
 609 static void playlists_got_new_tracks(void attribute((unused)) *v,
 610                                      const char *err,
 611                                      int nvec, char **vec) {
 612   fprintf(stderr, "playlists_got_new_tracks\n");
 613   if(err) {
 614     popup_protocol_error(0, err);
 615     return;
 616   }
 617   if(nvec == -1)
 618     /* No such playlist, presumably we'll get a deleted event shortly */
 619     return;
 620   /* Translate the list of tracks into queue entries */
 621   struct queue_entry *newq, **qq = &newq;
 622   hash *h = hash_new(sizeof(int));
 623   for(int n = 0; n < nvec; ++n) {
 624     struct queue_entry *q = xmalloc(sizeof *q);
 625     q->track = vec[n];
 626     /* Synthesize a unique ID so that the selection survives updates.  Tracks
 627      * can appear more than once in the queue so we can't use raw track names,
 628      * so we add a serial number to the start. */
 629     /* TODO but this doesn't work for some reason */
 630     int *serialp = hash_find(h, vec[n]), serial = serialp ? *serialp : 0;
 631     byte_xasprintf((char **)&q->id, "%d-%s", serial++, vec[n]);
 632     fprintf(stderr, "%s\n", q->id);
 633     hash_add(h, vec[0], &serial, HASH_INSERT_OR_REPLACE);
 634     *qq = q;
 635     qq = &q->next;
 636   }
 637   *qq = NULL;
 638   fprintf(stderr, "calling ql_new_queue\n");
 639   ql_new_queue(&ql_playlist, newq);
 640   fprintf(stderr, "back form ql_new_queue\n");
 641 }
 642
 643 /** @brief (Re-)populate the playlist tree model */
 644 static void playlists_fill_tracks(const char attribute((unused)) *event,
 645                                   void *eventdata,
 646                                   void attribute((unused)) *callbackdata) {
 647   const char *modified_playlist = eventdata;
 648   fprintf(stderr, "playlists_fill_tracks: %s\n", modified_playlist);
 649   if(!playlists_window)
 650     return;
 651   if(!playlists_selected)
 652     return;
 653   if(!strcmp(playlists_selected, modified_playlist))
 654     disorder_eclient_playlist_get(client, playlists_got_new_tracks,
 655                                   playlists_selected, NULL);
 656 }
 657
 658 static GtkWidget *playlists_window_edit(void) {
 659   assert(ql_playlist.view == NULL);     /* better not be set up already */
 660   GtkWidget *w = init_queuelike(&ql_playlist);
 661   /* Initially empty */
 662   return w;
 663 }
 664
 665 /* Playlists window --------------------------------------------------------- */
 666
 667 /** @brief Keypress handler */
 668 static gboolean playlists_keypress(GtkWidget attribute((unused)) *widget,
 669                                    GdkEventKey *event,
 670                                    gpointer attribute((unused)) user_data) {
 671   if(event->state)
 672     return FALSE;
 673   switch(event->keyval) {
 674   case GDK_Escape:
 675     gtk_widget_destroy(playlists_window);
 676     return TRUE;
 677   default:
 678     return FALSE;
 679   }
 680 }
 681
 682 /** @brief Called when the playlist window is destroyed */
 683 static void playlists_window_destroyed(GtkWidget attribute((unused)) *widget,
 684                                        GtkWidget **widget_pointer) {
 685   destroy_queuelike(&ql_playlist);
 686   *widget_pointer = NULL;
 687 }
 688
 689 /** @brief Pop up the playlists window
 690  *
 691  * Called when the playlists menu item is selected
 692  */
 693 void edit_playlists(gpointer attribute((unused)) callback_data,
 694                     guint attribute((unused)) callback_action,
 695                     GtkWidget attribute((unused)) *menu_item) {
 696   /* If the window already exists, raise it */
 697   if(playlists_window) {
 698     gtk_window_present(GTK_WINDOW(playlists_window));
 699     return;
 700   }
 701   /* Create the window */
 702   playlists_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 703   gtk_widget_set_style(playlists_window, tool_style);
 704   g_signal_connect(playlists_window, "destroy",
 705                    G_CALLBACK(playlists_window_destroyed), &playlists_window);
 706   gtk_window_set_title(GTK_WINDOW(playlists_window), "Playlists Management");
 707   /* TODO loads of this is very similar to (copied from!) users.c - can we
 708    * de-dupe? */
 709   /* Keyboard shortcuts */
 710   g_signal_connect(playlists_window, "key-press-event",
 711                    G_CALLBACK(playlists_keypress), 0);
 712   /* default size is too small */
 713   gtk_window_set_default_size(GTK_WINDOW(playlists_window), 512, 240);
 714
 715   GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
 716   gtk_box_pack_start(GTK_BOX(hbox), playlists_window_list(),
 717                      FALSE/*expand*/, FALSE, 0);
 718   gtk_box_pack_start(GTK_BOX(hbox), gtk_event_box_new(),
 719                      FALSE/*expand*/, FALSE, 2);
 720   gtk_box_pack_start(GTK_BOX(hbox), playlists_window_edit(),
 721                      TRUE/*expand*/, TRUE/*fill*/, 0);
 722
 723   gtk_container_add(GTK_CONTAINER(playlists_window), frame_widget(hbox, NULL));
 724   gtk_widget_show_all(playlists_window);
 725 }
 726
 727 /** @brief Initialize playlist support */
 728 void playlists_init(void) {
 729   /* We re-get all playlists upon any change... */
 730   event_register("playlist-created", playlists_update, 0);
 731   event_register("playlist-modified", playlists_update, 0);
 732   event_register("playlist-deleted", playlists_update, 0);
 733   /* ...and on reconnection */
 734   event_register("log-connected", playlists_update, 0);
 735   /* ...and from time to time */
 736   event_register("periodic-slow", playlists_update, 0);
 737   /* ...and at startup */
 738
 739   /* Update the playlists menu when the set of playlists changes */
 740   event_register("playlists-updated", menu_playlists_changed, 0);
 741   /* Update the new-playlist OK button when the set of playlists changes */
 742   event_register("playlists-updated", playlist_new_changed, 0);
 743   /* Update the list of playlists in the edit window when the set changes */
 744   event_register("playlists-updated", playlists_fill, 0);
 745   /* Update the displayed playlist when it is modified */
 746   event_register("playlist-modified", playlists_fill_tracks, 0);
 747   playlists_update(0, 0, 0);
 748 }
 749
 750 #endif
 751
 752 /*
 753 Local Variables:
 754 c-basic-offset:2
 755 comment-column:40
 756 fill-column:79
 757 indent-tabs-mode:nil
 758 End:
 759 */