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