chiark / gitweb /
missed a critical bit of the q->prev logic!
[disorder] / disobedience / playlists.c
CommitLineData
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1/*
2 * This file is part of DisOrder
121944d1 3 * Copyright (C) 2008, 2009 Richard Kettlewell
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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
b5e60f0d 21 * @brief Playlist support for Disobedience
fc36ecb7 22 *
f0bd437a 23 * The playlists management window contains:
b5e60f0d 24 * - the playlist picker (a list of all playlists) TODO should be a tree!
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25 * - an add button
26 * - a delete button
7fe2807d 27 * - the playlist editor (a d+d-capable view of the currently picked playlist)
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28 * - a close button TODO
29 *
30 * This file also maintains the playlist menu, allowing playlists to be
31 * activated from the main window's menu.
32 *
33 * Internally we maintain the playlist list, which is just the current list of
34 * playlists. Changes to this are reflected in the playlist menu and the
35 * playlist picker.
36 *
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37 */
38#include "disobedience.h"
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39#include "queue-generic.h"
40#include "popup.h"
7f7c3819 41#include "validity.h"
fc36ecb7 42
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43#if PLAYLISTS
44
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45static void playlist_list_received_playlists(void *v,
46 const char *err,
47 int nvec, char **vec);
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48static void playlist_editor_fill(const char *event,
49 void *eventdata,
50 void *callbackdata);
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51static int playlist_playall_sensitive(void *extra);
52static void playlist_playall_activate(GtkMenuItem *menuitem,
53 gpointer user_data);
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54static int playlist_remove_sensitive(void *extra) ;
55static void playlist_remove_activate(GtkMenuItem *menuitem,
56 gpointer user_data);
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57static void playlist_new_locked(void *v, const char *err);
58static void playlist_new_retrieved(void *v, const char *err,
59 int nvec,
60 char **vec);
61static void playlist_new_created(void *v, const char *err);
62static void playlist_new_unlocked(void *v, const char *err);
63static void playlist_new_entry_edited(GtkEditable *editable,
64 gpointer user_data);
65static void playlist_new_button_toggled(GtkToggleButton *tb,
66 gpointer userdata);
67static void playlist_new_changed(const char *event,
68 void *eventdata,
69 void *callbackdata);
70static const char *playlist_new_valid(void);
71static void playlist_new_details(char **namep,
72 char **fullnamep,
73 gboolean *sharedp,
74 gboolean *publicp,
75 gboolean *privatep);
76static void playlist_new_ok(GtkButton *button,
77 gpointer userdata);
78static void playlist_new_cancel(GtkButton *button,
79 gpointer userdata);
80static void playlists_editor_received_tracks(void *v,
81 const char *err,
82 int nvec, char **vec);
83static void playlist_window_destroyed(GtkWidget *widget,
84 GtkWidget **widget_pointer);
85static gboolean playlist_window_keypress(GtkWidget *widget,
86 GdkEventKey *event,
87 gpointer user_data);
88static int playlistcmp(const void *ap, const void *bp);
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89static void playlist_modify_locked(void *v, const char *err);
90void playlist_modify_retrieved(void *v, const char *err,
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91 int nvec,
92 char **vec);
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93static void playlist_modify_updated(void *v, const char *err);
94static void playlist_modify_unlocked(void *v, const char *err);
95static void playlist_drop(struct queuelike *ql,
96 int ntracks,
97 char **tracks, char **ids,
98 struct queue_entry *after_me);
99struct playlist_modify_data;
100static void playlist_drop_modify(struct playlist_modify_data *mod,
101 int nvec, char **vec);
102static void playlist_remove_modify(struct playlist_modify_data *mod,
103 int nvec, char **vec);
fc36ecb7 104
f0bd437a 105/** @brief Playlist editing window */
7fe2807d 106static GtkWidget *playlist_window;
f0bd437a 107
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108/** @brief Columns for the playlist editor */
109static const struct queue_column playlist_columns[] = {
110 { "Artist", column_namepart, "artist", COL_EXPAND|COL_ELLIPSIZE },
111 { "Album", column_namepart, "album", COL_EXPAND|COL_ELLIPSIZE },
112 { "Title", column_namepart, "title", COL_EXPAND|COL_ELLIPSIZE },
113 { "Length", column_length, 0, COL_RIGHT }
114};
115
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116/** @brief Pop-up menu for playlist editor
117 *
118 * Status:
119 * - track properties works but, bizarrely, raises the main window
120 * - play track works
121 * - play playlist works
122 * - select/deselect all work
123 */
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124static struct menuitem playlist_menuitems[] = {
125 { "Track properties", ql_properties_activate, ql_properties_sensitive, 0, 0 },
126 { "Play track", ql_play_activate, ql_play_sensitive, 0, 0 },
b35f7c0f 127 { "Play playlist", playlist_playall_activate, playlist_playall_sensitive, 0, 0 },
dba3eb8e 128 { "Remove track from queue", playlist_remove_activate, playlist_remove_sensitive, 0, 0 },
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129 { "Select all tracks", ql_selectall_activate, ql_selectall_sensitive, 0, 0 },
130 { "Deselect all tracks", ql_selectnone_activate, ql_selectnone_sensitive, 0, 0 },
131};
132
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133static const GtkTargetEntry playlist_targets[] = {
134 {
135 PLAYLIST_TRACKS, /* drag type */
136 GTK_TARGET_SAME_WIDGET, /* rearrangement within a widget */
137 PLAYLIST_TRACKS_ID /* ID value */
138 },
139 {
140 PLAYABLE_TRACKS, /* drag type */
141 GTK_TARGET_SAME_APP|GTK_TARGET_OTHER_WIDGET, /* copying between widgets */
142 PLAYABLE_TRACKS_ID, /* ID value */
143 },
144 {
145 .target = NULL
146 }
147};
148
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149/** @brief Queuelike for editing a playlist */
150static struct queuelike ql_playlist = {
151 .name = "playlist",
152 .columns = playlist_columns,
153 .ncolumns = sizeof playlist_columns / sizeof *playlist_columns,
154 .menuitems = playlist_menuitems,
155 .nmenuitems = sizeof playlist_menuitems / sizeof *playlist_menuitems,
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156 .drop = playlist_drop,
157 .drag_source_targets = playlist_targets,
158 .drag_source_actions = GDK_ACTION_MOVE|GDK_ACTION_COPY,
159 .drag_dest_targets = playlist_targets,
160 .drag_dest_actions = GDK_ACTION_MOVE|GDK_ACTION_COPY,
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161};
162
3c1a4e96 163/* Maintaining the list of playlists ---------------------------------------- */
121944d1 164
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165/** @brief Current list of playlists or NULL */
166char **playlists;
167
168/** @brief Count of playlists */
169int nplaylists;
170
171/** @brief Schedule an update to the list of playlists
172 *
173 * Called periodically and when a playlist is created or deleted.
174 */
175static void playlist_list_update(const char attribute((unused)) *event,
176 void attribute((unused)) *eventdata,
177 void attribute((unused)) *callbackdata) {
178 disorder_eclient_playlists(client, playlist_list_received_playlists, 0);
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179}
180
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181/** @brief Called with a new list of playlists */
182static void playlist_list_received_playlists(void attribute((unused)) *v,
183 const char *err,
184 int nvec, char **vec) {
185 if(err) {
186 playlists = 0;
187 nplaylists = -1;
188 /* Probably means server does not support playlists */
189 } else {
190 playlists = vec;
191 nplaylists = nvec;
192 qsort(playlists, nplaylists, sizeof (char *), playlistcmp);
193 }
194 /* Tell our consumers */
195 event_raise("playlists-updated", 0);
196}
197
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198/** @brief qsort() callback for playlist name comparison */
199static int playlistcmp(const void *ap, const void *bp) {
200 const char *a = *(char **)ap, *b = *(char **)bp;
201 const char *ad = strchr(a, '.'), *bd = strchr(b, '.');
202 int c;
203
204 /* Group owned playlists by owner */
205 if(ad && bd) {
206 const int adn = ad - a, bdn = bd - b;
207 if((c = strncmp(a, b, adn < bdn ? adn : bdn)))
208 return c;
209 /* Lexical order within playlists of a single owner */
210 return strcmp(ad + 1, bd + 1);
211 }
212
213 /* Owned playlists after shared ones */
214 if(ad) {
215 return 1;
216 } else if(bd) {
217 return -1;
218 }
219
220 /* Lexical order of shared playlists */
221 return strcmp(a, b);
222}
223
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224/* Playlists menu ----------------------------------------------------------- */
225
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226static void playlist_menu_playing(void attribute((unused)) *v,
227 const char *err) {
228 if(err)
229 popup_protocol_error(0, err);
230}
231
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232/** @brief Play received playlist contents
233 *
234 * Passed as a completion callback by menu_activate_playlist().
235 */
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236static void playlist_menu_received_content(void attribute((unused)) *v,
237 const char *err,
238 int nvec, char **vec) {
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239 if(err) {
240 popup_protocol_error(0, err);
241 return;
242 }
243 for(int n = 0; n < nvec; ++n)
b35f7c0f 244 disorder_eclient_play(client, vec[n], playlist_menu_playing, NULL);
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245}
246
247/** @brief Called to activate a playlist
248 *
249 * Called when the menu item for a playlist is clicked.
250 */
b5e60f0d 251static void playlist_menu_activate(GtkMenuItem *menuitem,
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252 gpointer attribute((unused)) user_data) {
253 GtkLabel *label = GTK_LABEL(GTK_BIN(menuitem)->child);
254 const char *playlist = gtk_label_get_text(label);
255
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256 disorder_eclient_playlist_get(client, playlist_menu_received_content,
257 playlist, NULL);
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258}
259
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260/** @brief Called when the playlists change
261 *
262 * Naively refills the menu. The results might be unsettling if the menu is
263 * currently open, but this is hopefuly fairly rare.
264 */
265static void playlist_menu_changed(const char attribute((unused)) *event,
266 void attribute((unused)) *eventdata,
267 void attribute((unused)) *callbackdata) {
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268 if(!playlists_menu)
269 return; /* OMG too soon */
270 GtkMenuShell *menu = GTK_MENU_SHELL(playlists_menu);
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271 while(menu->children)
272 gtk_container_remove(GTK_CONTAINER(menu), GTK_WIDGET(menu->children->data));
273 /* NB nplaylists can be -1 as well as 0 */
274 for(int n = 0; n < nplaylists; ++n) {
275 GtkWidget *w = gtk_menu_item_new_with_label(playlists[n]);
b5e60f0d 276 g_signal_connect(w, "activate", G_CALLBACK(playlist_menu_activate), 0);
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277 gtk_widget_show(w);
278 gtk_menu_shell_append(menu, w);
279 }
fdea9f40 280 gtk_widget_set_sensitive(menu_playlists_widget,
f9b20469 281 nplaylists > 0);
fdea9f40 282 gtk_widget_set_sensitive(menu_editplaylists_widget,
6acdbba4 283 nplaylists >= 0);
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284}
285
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286/* Popup to create a new playlist ------------------------------------------- */
287
288/** @brief New-playlist popup */
289static GtkWidget *playlist_new_window;
290
291/** @brief Text entry in new-playlist popup */
292static GtkWidget *playlist_new_entry;
293
b5e60f0d 294/** @brief Label for displaying feedback on what's wrong */
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295static GtkWidget *playlist_new_info;
296
b5e60f0d 297/** @brief "Shared" radio button */
7f7c3819 298static GtkWidget *playlist_new_shared;
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299
300/** @brief "Public" radio button */
7f7c3819 301static GtkWidget *playlist_new_public;
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302
303/** @brief "Private" radio button */
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304static GtkWidget *playlist_new_private;
305
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306/** @brief Buttons for new-playlist popup */
307static struct button playlist_new_buttons[] = {
308 {
309 .stock = GTK_STOCK_OK,
310 .clicked = playlist_new_ok,
311 .tip = "Create new playlist"
312 },
313 {
314 .stock = GTK_STOCK_CANCEL,
315 .clicked = playlist_new_cancel,
316 .tip = "Do not create new playlist"
7c12e4bd 317 }
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318};
319#define NPLAYLIST_NEW_BUTTONS (sizeof playlist_new_buttons / sizeof *playlist_new_buttons)
320
321/** @brief Pop up a new window to enter the playlist name and details */
322static void playlist_new_playlist(void) {
323 assert(playlist_new_window == NULL);
324 playlist_new_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
325 g_signal_connect(playlist_new_window, "destroy",
326 G_CALLBACK(gtk_widget_destroyed), &playlist_new_window);
327 gtk_window_set_title(GTK_WINDOW(playlist_new_window), "Create new playlist");
328 /* Window will be modal, suppressing access to other windows */
329 gtk_window_set_modal(GTK_WINDOW(playlist_new_window), TRUE);
330 gtk_window_set_transient_for(GTK_WINDOW(playlist_new_window),
331 GTK_WINDOW(playlist_window));
332
333 /* Window contents will use a table (grid) layout */
334 GtkWidget *table = gtk_table_new(3, 3, FALSE/*!homogeneous*/);
335
336 /* First row: playlist name */
337 gtk_table_attach_defaults(GTK_TABLE(table),
338 gtk_label_new("Playlist name"),
339 0, 1, 0, 1);
340 playlist_new_entry = gtk_entry_new();
341 g_signal_connect(playlist_new_entry, "changed",
342 G_CALLBACK(playlist_new_entry_edited), NULL);
343 gtk_table_attach_defaults(GTK_TABLE(table),
344 playlist_new_entry,
345 1, 3, 0, 1);
346
347 /* Second row: radio buttons to choose type */
348 playlist_new_shared = gtk_radio_button_new_with_label(NULL, "shared");
349 playlist_new_public
350 = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_new_shared),
351 "public");
352 playlist_new_private
353 = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_new_shared),
354 "private");
355 g_signal_connect(playlist_new_shared, "toggled",
356 G_CALLBACK(playlist_new_button_toggled), NULL);
357 g_signal_connect(playlist_new_public, "toggled",
358 G_CALLBACK(playlist_new_button_toggled), NULL);
359 g_signal_connect(playlist_new_private, "toggled",
360 G_CALLBACK(playlist_new_button_toggled), NULL);
361 gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_shared, 0, 1, 1, 2);
362 gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_public, 1, 2, 1, 2);
363 gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_private, 2, 3, 1, 2);
364
365 /* Third row: info bar saying why not */
366 playlist_new_info = gtk_label_new("");
367 gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_info,
368 0, 3, 2, 3);
369
370 /* Fourth row: ok/cancel buttons */
371 GtkWidget *hbox = create_buttons_box(playlist_new_buttons,
372 NPLAYLIST_NEW_BUTTONS,
373 gtk_hbox_new(FALSE, 0));
374 gtk_table_attach_defaults(GTK_TABLE(table), hbox, 0, 3, 3, 4);
375
376 gtk_container_add(GTK_CONTAINER(playlist_new_window),
377 frame_widget(table, NULL));
378
379 /* Set initial state of OK button */
380 playlist_new_changed(0,0,0);
381
382 /* TODO: return should = OK, escape should = cancel */
383
384 /* Display the window */
385 gtk_widget_show_all(playlist_new_window);
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386}
387
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388/** @brief Called when 'ok' is clicked in new-playlist popup */
389static void playlist_new_ok(GtkButton attribute((unused)) *button,
390 gpointer attribute((unused)) userdata) {
391 gboolean shared, public, private;
392 char *name, *fullname;
393 playlist_new_details(&name, &fullname, &shared, &public, &private);
394
395 /* We need to:
396 * - lock the playlist
397 * - check it doesn't exist
398 * - set sharing (which will create it empty
399 * - unlock it
400 *
401 * TODO we should freeze the window while this is going on to stop a second
402 * click.
403 */
404 disorder_eclient_playlist_lock(client, playlist_new_locked, fullname,
405 fullname);
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406}
407
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408/** @brief Called when the proposed new playlist has been locked */
409static void playlist_new_locked(void *v, const char *err) {
410 char *fullname = v;
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411 if(err) {
412 popup_protocol_error(0, err);
413 return;
414 }
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415 disorder_eclient_playlist_get(client, playlist_new_retrieved,
416 fullname, fullname);
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417}
418
419/** @brief Called when the proposed new playlist's contents have been retrieved
420 *
421 * ...or rather, normally, when it's been reported that it does not exist.
422 */
423static void playlist_new_retrieved(void *v, const char *err,
424 int nvec,
425 char attribute((unused)) **vec) {
426 char *fullname = v;
427 if(!err && nvec != -1)
428 /* A rare case but not in principle impossible */
429 err = "A playlist with that name already exists.";
430 if(err) {
431 popup_protocol_error(0, err);
432 disorder_eclient_playlist_unlock(client, playlist_new_unlocked, fullname);
433 return;
434 }
435 gboolean shared, public, private;
436 playlist_new_details(0, 0, &shared, &public, &private);
437 disorder_eclient_playlist_set_share(client, playlist_new_created, fullname,
438 public ? "public"
439 : private ? "private"
440 : "shared",
441 fullname);
442}
443
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444/** @brief Called when the new playlist has been created */
445static void playlist_new_created(void attribute((unused)) *v, const char *err) {
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446 if(err) {
447 popup_protocol_error(0, err);
448 return;
449 }
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450 disorder_eclient_playlist_unlock(client, playlist_new_unlocked, NULL);
451 // TODO arrange for the new playlist to be selected
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452}
453
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454/** @brief Called when the newly created playlist has unlocked */
455static void playlist_new_unlocked(void attribute((unused)) *v, const char *err) {
456 if(err)
457 popup_protocol_error(0, err);
458 /* Pop down the creation window */
459 gtk_widget_destroy(playlist_new_window);
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460}
461
462/** @brief Called when 'cancel' is clicked in new-playlist popup */
463static void playlist_new_cancel(GtkButton attribute((unused)) *button,
464 gpointer attribute((unused)) userdata) {
465 gtk_widget_destroy(playlist_new_window);
466}
467
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468/** @brief Called when some radio button in the new-playlist popup changes */
469static void playlist_new_button_toggled(GtkToggleButton attribute((unused)) *tb,
470 gpointer attribute((unused)) userdata) {
471 playlist_new_changed(0,0,0);
472}
473
474/** @brief Called when the text entry field in the new-playlist popup changes */
475static void playlist_new_entry_edited(GtkEditable attribute((unused)) *editable,
476 gpointer attribute((unused)) user_data) {
477 playlist_new_changed(0,0,0);
478}
479
480/** @brief Called to update new playlist window state
481 *
482 * This is called whenever one the text entry or radio buttons changed, and
483 * also when the set of known playlists changes. It determines whether the new
484 * playlist would be creatable and sets the sensitivity of the OK button
485 * and info display accordingly.
486 */
487static void playlist_new_changed(const char attribute((unused)) *event,
488 void attribute((unused)) *eventdata,
489 void attribute((unused)) *callbackdata) {
490 if(!playlist_new_window)
491 return;
492 const char *reason = playlist_new_valid();
493 gtk_widget_set_sensitive(playlist_new_buttons[0].widget,
494 !reason);
495 gtk_label_set_text(GTK_LABEL(playlist_new_info), reason);
496}
7f7c3819 497
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498/** @brief Test whether the new-playlist window settings are valid
499 * @return NULL on success or an error string if not
500 */
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501static const char *playlist_new_valid(void) {
502 gboolean shared, public, private;
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503 char *name, *fullname;
504 playlist_new_details(&name, &fullname, &shared, &public, &private);
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505 if(!(shared || public || private))
506 return "No type set.";
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507 if(!*name)
508 return "";
7f7c3819 509 /* See if the result is valid */
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510 if(!valid_username(name)
511 || playlist_parse_name(fullname, NULL, NULL))
7f7c3819 512 return "Not a valid playlist name.";
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513 /* See if the result clashes with an existing name. This is not a perfect
514 * check, the playlist might be created after this point but before we get a
515 * chance to disable the "OK" button. However when we try to create the
516 * playlist we will first try to retrieve it, with a lock held, so we
517 * shouldn't end up overwriting anything. */
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518 for(int n = 0; n < nplaylists; ++n)
519 if(!strcmp(playlists[n], fullname)) {
520 if(shared)
521 return "A shared playlist with that name already exists.";
522 else
523 return "You already have a playlist with that name.";
524 }
525 /* As far as we can tell creation would work */
526 return NULL;
527}
528
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529/** @brief Get entered new-playlist details
530 * @param namep Where to store entered name (or NULL)
531 * @param fullnamep Where to store computed full name (or NULL)
532 * @param sharep Where to store 'shared' flag (or NULL)
533 * @param publicp Where to store 'public' flag (or NULL)
534 * @param privatep Where to store 'private' flag (or NULL)
7f7c3819 535 */
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536static void playlist_new_details(char **namep,
537 char **fullnamep,
538 gboolean *sharedp,
539 gboolean *publicp,
540 gboolean *privatep) {
541 gboolean shared, public, private;
542 g_object_get(playlist_new_shared, "active", &shared, (char *)NULL);
543 g_object_get(playlist_new_public, "active", &public, (char *)NULL);
544 g_object_get(playlist_new_private, "active", &private, (char *)NULL);
545 char *gname = gtk_editable_get_chars(GTK_EDITABLE(playlist_new_entry),
546 0, -1); /* name owned by calle */
547 char *name = xstrdup(gname);
548 g_free(gname);
549 if(sharedp) *sharedp = shared;
550 if(publicp) *publicp = public;
551 if(privatep) *privatep = private;
552 if(namep) *namep = name;
553 if(fullnamep) {
554 if(*sharedp) *fullnamep = *namep;
555 else byte_xasprintf(fullnamep, "%s.%s", config->username, name);
556 }
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557}
558
b5e60f0d 559/* Playlist picker ---------------------------------------------------------- */
121944d1 560
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561/** @brief Delete button */
562static GtkWidget *playlist_picker_delete_button;
563
564/** @brief Tree model for list of playlists */
565static GtkListStore *playlist_picker_list;
566
567/** @brief Selection for list of playlists */
568static GtkTreeSelection *playlist_picker_selection;
569
570/** @brief Currently selected playlist */
571static const char *playlist_picker_selected;
572
573/** @brief (Re-)populate the playlist picker tree model */
574static void playlist_picker_fill(const char attribute((unused)) *event,
575 void attribute((unused)) *eventdata,
576 void attribute((unused)) *callbackdata) {
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577 GtkTreeIter iter[1];
578
7fe2807d 579 if(!playlist_window)
d571e07b 580 return;
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581 if(!playlist_picker_list)
582 playlist_picker_list = gtk_list_store_new(1, G_TYPE_STRING);
583 const char *was_selected = playlist_picker_selected;
584 gtk_list_store_clear(playlist_picker_list); /* clears playlists_selected */
d571e07b 585 for(int n = 0; n < nplaylists; ++n) {
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586 gtk_list_store_insert_with_values(playlist_picker_list, iter,
587 n /*position*/,
588 0, playlists[n], /* column 0 */
589 -1); /* no more cols */
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590 /* Reselect the selected playlist */
591 if(was_selected && !strcmp(was_selected, playlists[n]))
b5e60f0d 592 gtk_tree_selection_select_iter(playlist_picker_selection, iter);
d571e07b 593 }
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594 /* TODO deselecting then reselecting the current playlist resets the playlist
595 * editor, which trashes the user's selection. */
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596}
597
598/** @brief Called when the selection might have changed */
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599static void playlist_picker_selection_changed(GtkTreeSelection attribute((unused)) *treeselection,
600 gpointer attribute((unused)) user_data) {
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601 GtkTreeIter iter;
602 char *gselected, *selected;
603
604 /* Identify the current selection */
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605 if(gtk_tree_selection_get_selected(playlist_picker_selection, 0, &iter)) {
606 gtk_tree_model_get(GTK_TREE_MODEL(playlist_picker_list), &iter,
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607 0, &gselected, -1);
608 selected = xstrdup(gselected);
609 g_free(gselected);
610 } else
611 selected = 0;
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612 /* Set button sensitivity according to the new state */
613 if(selected)
b5e60f0d 614 gtk_widget_set_sensitive(playlist_picker_delete_button, 1);
7c12e4bd 615 else
b5e60f0d 616 gtk_widget_set_sensitive(playlist_picker_delete_button, 0);
f0bd437a 617 /* Eliminate no-change cases */
b5e60f0d 618 if(!selected && !playlist_picker_selected)
f0bd437a 619 return;
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620 if(selected
621 && playlist_picker_selected
622 && !strcmp(selected, playlist_picker_selected))
f0bd437a 623 return;
d9b141cc 624 /* Record the new state */
b5e60f0d 625 playlist_picker_selected = selected;
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626 /* Re-initalize the queue */
627 ql_new_queue(&ql_playlist, NULL);
7fe2807d 628 playlist_editor_fill(NULL, (void *)playlist_picker_selected, NULL);
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629}
630
631/** @brief Called when the 'add' button is pressed */
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632static void playlist_picker_add(GtkButton attribute((unused)) *button,
633 gpointer attribute((unused)) userdata) {
7c12e4bd 634 /* Unselect whatever is selected TODO why?? */
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635 gtk_tree_selection_unselect_all(playlist_picker_selection);
636 playlist_new_playlist();
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637}
638
d9b141cc 639/** @brief Called when playlist deletion completes */
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640static void playlists_picker_delete_completed(void attribute((unused)) *v,
641 const char *err) {
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642 if(err)
643 popup_protocol_error(0, err);
644}
645
f0bd437a 646/** @brief Called when the 'Delete' button is pressed */
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647static void playlist_picker_delete(GtkButton attribute((unused)) *button,
648 gpointer attribute((unused)) userdata) {
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649 GtkWidget *yesno;
650 int res;
651
b5e60f0d 652 if(!playlist_picker_selected)
f0bd437a 653 return; /* shouldn't happen */
7fe2807d 654 yesno = gtk_message_dialog_new(GTK_WINDOW(playlist_window),
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655 GTK_DIALOG_MODAL,
656 GTK_MESSAGE_QUESTION,
657 GTK_BUTTONS_YES_NO,
c5782050 658 "Do you really want to delete playlist %s?"
f0bd437a 659 " This action cannot be undone.",
b5e60f0d 660 playlist_picker_selected);
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661 res = gtk_dialog_run(GTK_DIALOG(yesno));
662 gtk_widget_destroy(yesno);
663 if(res == GTK_RESPONSE_YES) {
664 disorder_eclient_playlist_delete(client,
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665 playlists_picker_delete_completed,
666 playlist_picker_selected,
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667 NULL);
668 }
669}
670
671/** @brief Table of buttons below the playlist list */
b5e60f0d 672static struct button playlist_picker_buttons[] = {
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673 {
674 GTK_STOCK_ADD,
b5e60f0d 675 playlist_picker_add,
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676 "Create a new playlist",
677 0
678 },
679 {
680 GTK_STOCK_REMOVE,
b5e60f0d 681 playlist_picker_delete,
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682 "Delete a playlist",
683 0
684 },
685};
b5e60f0d 686#define NPLAYLIST_PICKER_BUTTONS (sizeof playlist_picker_buttons / sizeof *playlist_picker_buttons)
f0bd437a 687
506e02d8 688/** @brief Create the list of playlists for the edit playlists window */
b5e60f0d 689static GtkWidget *playlist_picker_create(void) {
506e02d8 690 /* Create the list of playlist and populate it */
b5e60f0d 691 playlist_picker_fill(NULL, NULL, NULL);
506e02d8 692 /* Create the tree view */
b5e60f0d 693 GtkWidget *tree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(playlist_picker_list));
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694 /* ...and the renderers for it */
695 GtkCellRenderer *cr = gtk_cell_renderer_text_new();
696 GtkTreeViewColumn *col = gtk_tree_view_column_new_with_attributes("Playlist",
697 cr,
698 "text", 0,
699 NULL);
700 gtk_tree_view_append_column(GTK_TREE_VIEW(tree), col);
701 /* Get the selection for the view; set its mode; arrange for a callback when
702 * it changes */
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703 playlist_picker_selected = NULL;
704 playlist_picker_selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree));
705 gtk_tree_selection_set_mode(playlist_picker_selection, GTK_SELECTION_BROWSE);
706 g_signal_connect(playlist_picker_selection, "changed",
707 G_CALLBACK(playlist_picker_selection_changed), NULL);
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708
709 /* Create the control buttons */
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710 GtkWidget *buttons = create_buttons_box(playlist_picker_buttons,
711 NPLAYLIST_PICKER_BUTTONS,
506e02d8 712 gtk_hbox_new(FALSE, 1));
b5e60f0d 713 playlist_picker_delete_button = playlist_picker_buttons[1].widget;
506e02d8 714
b5e60f0d 715 playlist_picker_selection_changed(NULL, NULL);
7c12e4bd 716
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717 /* Buttons live below the list */
718 GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
719 gtk_box_pack_start(GTK_BOX(vbox), scroll_widget(tree), TRUE/*expand*/, TRUE/*fill*/, 0);
720 gtk_box_pack_start(GTK_BOX(vbox), buttons, FALSE/*expand*/, FALSE, 0);
721
722 return vbox;
723}
724
7fe2807d 725/* Playlist editor ---------------------------------------------------------- */
506e02d8 726
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727static GtkWidget *playlists_editor_create(void) {
728 assert(ql_playlist.view == NULL); /* better not be set up already */
729 GtkWidget *w = init_queuelike(&ql_playlist);
730 /* Initially empty */
731 return w;
732}
733
734/** @brief (Re-)populate the playlist tree model */
735static void playlist_editor_fill(const char attribute((unused)) *event,
736 void *eventdata,
737 void attribute((unused)) *callbackdata) {
738 const char *modified_playlist = eventdata;
739 if(!playlist_window)
740 return;
741 if(!playlist_picker_selected)
742 return;
743 if(!strcmp(playlist_picker_selected, modified_playlist))
744 disorder_eclient_playlist_get(client, playlists_editor_received_tracks,
745 playlist_picker_selected,
746 (void *)playlist_picker_selected);
747}
748
7e702780 749/** @brief Called with new tracks for the playlist */
f06a754c 750static void playlists_editor_received_tracks(void *v,
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751 const char *err,
752 int nvec, char **vec) {
f06a754c 753 const char *playlist = v;
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754 if(err) {
755 popup_protocol_error(0, err);
756 return;
757 }
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758 if(!playlist_picker_selected
759 || strcmp(playlist, playlist_picker_selected)) {
760 /* The tracks are for the wrong playlist - something must have changed
761 * while the fetch command was in flight. We just ignore this callback,
762 * the right answer will be requested and arrive in due course. */
763 return;
764 }
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765 if(nvec == -1)
766 /* No such playlist, presumably we'll get a deleted event shortly */
767 return;
768 /* Translate the list of tracks into queue entries */
eaf4cd2e 769 struct queue_entry *newq, **qq = &newq, *qprev = NULL;
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770 hash *h = hash_new(sizeof(int));
771 for(int n = 0; n < nvec; ++n) {
772 struct queue_entry *q = xmalloc(sizeof *q);
8bbeb28e 773 q->prev = qprev;
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774 q->track = vec[n];
775 /* Synthesize a unique ID so that the selection survives updates. Tracks
776 * can appear more than once in the queue so we can't use raw track names,
777 * so we add a serial number to the start. */
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778 int *serialp = hash_find(h, vec[n]), serial = serialp ? *serialp : 0;
779 byte_xasprintf((char **)&q->id, "%d-%s", serial++, vec[n]);
f57ff3aa 780 hash_add(h, vec[n], &serial, HASH_INSERT_OR_REPLACE);
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781 *qq = q;
782 qq = &q->next;
8bbeb28e 783 qprev = q;
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784 }
785 *qq = NULL;
7e702780 786 ql_new_queue(&ql_playlist, newq);
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787}
788
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789/* Playlist mutation -------------------------------------------------------- */
790
791/** @brief State structure for guarded playlist modification
792 *
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793 * To safely move, insert or delete rows we must:
794 * - take a lock
795 * - fetch the playlist
796 * - verify it's not changed
797 * - update the playlist contents
798 * - store the playlist
799 * - release the lock
800 *
801 * The playlist_modify_ functions do just that.
802 *
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803 * To kick things off create one of these and disorder_eclient_playlist_lock()
804 * with playlist_modify_locked() as its callback. @c modify will be called; it
805 * should disorder_eclient_playlist_set() to set the new state with
806 * playlist_modify_updated() as its callback.
807 */
808struct playlist_modify_data {
809 /** @brief Affected playlist */
810 const char *playlist;
811 /** @brief Modification function
812 * @param mod Pointer back to state structure
813 * @param ntracks Length of playlist
814 * @param tracks Tracks in playlist
815 */
816 void (*modify)(struct playlist_modify_data *mod,
817 int ntracks, char **tracks);
818
819 /** @brief Number of tracks dropped */
820 int ntracks;
821 /** @brief Track names dropped */
822 char **tracks;
823 /** @brief Track IDs dropped */
824 char **ids;
825 /** @brief Drop after this point */
826 struct queue_entry *after_me;
827};
828
829/** @brief Called with playlist locked
830 *
831 * This is the entry point for guarded modification ising @ref
832 * playlist_modify_data.
833 */
834static void playlist_modify_locked(void *v, const char *err) {
835 struct playlist_modify_data *mod = v;
836 if(err) {
837 popup_protocol_error(0, err);
838 return;
839 }
840 disorder_eclient_playlist_get(client, playlist_modify_retrieved,
841 mod->playlist, mod);
842}
843
844/** @brief Called with current playlist contents
845 * Checks that the playlist is still current and has not changed.
846 */
847void playlist_modify_retrieved(void *v, const char *err,
848 int nvec,
849 char **vec) {
850 struct playlist_modify_data *mod = v;
851 if(err) {
852 popup_protocol_error(0, err);
853 disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
854 return;
855 }
856 if(nvec < 0
857 || !playlist_picker_selected
858 || strcmp(mod->playlist, playlist_picker_selected)) {
859 disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
860 return;
861 }
862 /* We check that the contents haven't changed. If they have we just abandon
863 * the operation. The user will have to try again. */
864 struct queue_entry *q;
865 int n;
866 for(n = 0, q = ql_playlist.q; q && n < nvec; ++n, q = q->next)
867 if(strcmp(q->track, vec[n]))
868 break;
869 if(n != nvec || q != NULL) {
870 disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
871 return;
872 }
873 mod->modify(mod, nvec, vec);
874}
875
876/** @brief Called when the playlist has been updated */
877static void playlist_modify_updated(void attribute((unused)) *v,
878 const char *err) {
879 if(err)
880 popup_protocol_error(0, err);
881 disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
882}
883
884/** @brief Called when the playlist has been unlocked */
885static void playlist_modify_unlocked(void attribute((unused)) *v,
886 const char *err) {
887 if(err)
888 popup_protocol_error(0, err);
889}
890
891/* Drop tracks into a playlist ---------------------------------------------- */
892
893static void playlist_drop(struct queuelike attribute((unused)) *ql,
894 int ntracks,
895 char **tracks, char **ids,
896 struct queue_entry *after_me) {
897 struct playlist_modify_data *mod = xmalloc(sizeof *mod);
898
899 mod->playlist = playlist_picker_selected;
900 mod->modify = playlist_drop_modify;
901 mod->ntracks = ntracks;
902 mod->tracks = tracks;
903 mod->ids = ids;
904 mod->after_me = after_me;
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905 disorder_eclient_playlist_lock(client, playlist_modify_locked,
906 mod->playlist, mod);
907}
908
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909/** @brief Return true if track @p i is in the moved set */
910static int playlist_drop_is_moved(struct playlist_modify_data *mod,
911 int i) {
912 struct queue_entry *q;
913
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914 /* Find the q corresponding to i, so we can get the ID */
915 for(q = ql_playlist.q; i; q = q->next, --i)
916 ;
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917 /* See if track i matches any of the moved set by ID */
918 for(int n = 0; n < mod->ntracks; ++n)
8bbeb28e 919 if(!strcmp(q->id, mod->ids[n]))
a6712ea8 920 return 1;
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921 return 0;
922}
923
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924static void playlist_drop_modify(struct playlist_modify_data *mod,
925 int nvec, char **vec) {
926 char **newvec;
927 int nnewvec;
f57ff3aa 928
d8efe0a3 929 fprintf(stderr, "\nplaylist_drop_modify\n");
a6712ea8
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930 /* after_me is the queue_entry to insert after, or NULL to insert at the
931 * beginning (including the case when the playlist is empty) */
f57ff3aa
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932 fprintf(stderr, "after_me = %s\n",
933 mod->after_me ? mod->after_me->track : "NULL");
a6712ea8
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934 struct queue_entry *q = ql_playlist.q;
935 int ins = 0;
936 if(mod->after_me) {
937 ++ins;
938 while(q && q != mod->after_me) {
939 q = q->next;
940 ++ins;
941 }
942 }
943 /* Now ins is the index to insert at; equivalently, the row to insert before,
944 * and so equal to nvec to append. */
8bbeb28e 945#if 0
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946 fprintf(stderr, "ins = %d = %s\n",
947 ins, ins < nvec ? vec[ins] : "NULL");
d8efe0a3
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948 for(int n = 0; n < nvec; ++n)
949 fprintf(stderr, "%d: %s %s\n", n, n == ins ? "->" : " ", vec[n]);
a6712ea8 950 fprintf(stderr, "nvec = %d\n", nvec);
8bbeb28e 951#endif
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952 if(mod->ids) {
953 /* This is a rearrangement */
d8efe0a3
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954 /* We have:
955 * - vec[], the current layout
956 * - ins, pointing into vec
957 * - mod->tracks[], a subset of vec[] which is to be moved
958 *
959 * ins is the insertion point BUT it is in terms of the whole
960 * array, i.e. before mod->tracks[] have been removed. The first
961 * step then is to remove everything in mod->tracks[] and adjust
962 * ins downwards as necessary.
963 */
964 /* First zero out anything that's moved */
965 int before_ins = 0;
966 for(int n = 0; n < nvec; ++n) {
967 if(playlist_drop_is_moved(mod, n)) {
968 vec[n] = NULL;
969 if(n < ins)
970 ++before_ins;
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971 }
972 }
d8efe0a3
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973 /* Now collapse down the array */
974 int i = 0;
975 for(int n = 0; n < nvec; ++n) {
976 if(vec[n])
977 vec[i++] = vec[n];
978 }
979 assert(i + mod->ntracks == nvec);
980 nvec = i;
981 /* Adjust the insertion point to take account of things moved from before
982 * it */
983 ins -= before_ins;
984 /* The effect is now the same as an insertion */
7a3eb8eb 985 }
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986 /* This is (now) an insertion */
987 nnewvec = nvec + mod->ntracks;
988 newvec = xcalloc(nnewvec, sizeof (char *));
989 memcpy(newvec, vec,
990 ins * sizeof (char *));
991 memcpy(newvec + ins, mod->tracks,
992 mod->ntracks * sizeof (char *));
993 memcpy(newvec + ins + mod->ntracks, vec + ins,
994 (nvec - ins) * sizeof (char *));
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995 disorder_eclient_playlist_set(client, playlist_modify_updated, mod->playlist,
996 newvec, nnewvec, mod);
997}
998
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999/* Playlist editor right-click menu ---------------------------------------- */
1000
1001/** @brief Called to determine whether the playlist is playable */
1002static int playlist_playall_sensitive(void attribute((unused)) *extra) {
1003 /* If there's no playlist obviously we can't play it */
1004 if(!playlist_picker_selected)
1005 return FALSE;
1006 /* If it's empty we can't play it */
1007 if(!ql_playlist.q)
1008 return FALSE;
1009 /* Otherwise we can */
1010 return TRUE;
1011}
1012
1013/** @brief Called to play the selected playlist */
1014static void playlist_playall_activate(GtkMenuItem attribute((unused)) *menuitem,
1015 gpointer attribute((unused)) user_data) {
1016 if(!playlist_picker_selected)
1017 return;
1018 /* Re-use the menu-based activation callback */
1019 disorder_eclient_playlist_get(client, playlist_menu_received_content,
1020 playlist_picker_selected, NULL);
1021}
1022
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1023/** @brief Called to determine whether the playlist is playable */
1024static int playlist_remove_sensitive(void attribute((unused)) *extra) {
1025 /* If there's no playlist obviously we can't remove from it */
1026 if(!playlist_picker_selected)
1027 return FALSE;
1028 /* If no tracks are selected we cannot remove them */
1029 if(!gtk_tree_selection_count_selected_rows(ql_playlist.selection))
1030 return FALSE;
1031 /* We're good to go */
1032 return TRUE;
1033}
1034
1035/** @brief Called to play the selected playlist */
1036static void playlist_remove_activate(GtkMenuItem attribute((unused)) *menuitem,
1037 gpointer attribute((unused)) user_data) {
f57ff3aa 1038 /* TODO backspace should work too */
dba3eb8e
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1039 if(!playlist_picker_selected)
1040 return;
7a3eb8eb 1041 struct playlist_modify_data *mod = xmalloc(sizeof *mod);
487eb32a 1042
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1043 mod->playlist = playlist_picker_selected;
1044 mod->modify = playlist_remove_modify;
1045 disorder_eclient_playlist_lock(client, playlist_modify_locked,
1046 mod->playlist, mod);
487eb32a
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1047}
1048
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1049static void playlist_remove_modify(struct playlist_modify_data *mod,
1050 int attribute((unused)) nvec, char **vec) {
487eb32a
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1051 GtkTreeIter iter[1];
1052 gboolean it = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql_playlist.store),
1053 iter);
7a3eb8eb 1054 int n = 0, m = 0;
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1055 while(it) {
1056 if(!gtk_tree_selection_iter_is_selected(ql_playlist.selection, iter))
1057 vec[m++] = vec[n++];
1058 else
1059 n++;
1060 it = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql_playlist.store), iter);
1061 }
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1062 disorder_eclient_playlist_set(client, playlist_modify_updated, mod->playlist,
1063 vec, m, mod);
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1064}
1065
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1066/* Playlists window --------------------------------------------------------- */
1067
7de5fbb9 1068/** @brief Pop up the playlists window
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1069 *
1070 * Called when the playlists menu item is selected
1071 */
f06a754c
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1072void playlist_window_create(gpointer attribute((unused)) callback_data,
1073 guint attribute((unused)) callback_action,
1074 GtkWidget attribute((unused)) *menu_item) {
f0bd437a 1075 /* If the window already exists, raise it */
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1076 if(playlist_window) {
1077 gtk_window_present(GTK_WINDOW(playlist_window));
f0bd437a
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1078 return;
1079 }
1080 /* Create the window */
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1081 playlist_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
1082 gtk_widget_set_style(playlist_window, tool_style);
1083 g_signal_connect(playlist_window, "destroy",
1084 G_CALLBACK(playlist_window_destroyed), &playlist_window);
1085 gtk_window_set_title(GTK_WINDOW(playlist_window), "Playlists Management");
f0bd437a
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1086 /* TODO loads of this is very similar to (copied from!) users.c - can we
1087 * de-dupe? */
1088 /* Keyboard shortcuts */
7fe2807d
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1089 g_signal_connect(playlist_window, "key-press-event",
1090 G_CALLBACK(playlist_window_keypress), 0);
f0bd437a 1091 /* default size is too small */
7fe2807d 1092 gtk_window_set_default_size(GTK_WINDOW(playlist_window), 512, 240);
f0bd437a 1093
506e02d8 1094 GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
b5e60f0d 1095 gtk_box_pack_start(GTK_BOX(hbox), playlist_picker_create(),
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1096 FALSE/*expand*/, FALSE, 0);
1097 gtk_box_pack_start(GTK_BOX(hbox), gtk_event_box_new(),
1098 FALSE/*expand*/, FALSE, 2);
7fe2807d 1099 gtk_box_pack_start(GTK_BOX(hbox), playlists_editor_create(),
506e02d8 1100 TRUE/*expand*/, TRUE/*fill*/, 0);
f0bd437a 1101
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1102 gtk_container_add(GTK_CONTAINER(playlist_window), frame_widget(hbox, NULL));
1103 gtk_widget_show_all(playlist_window);
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1104}
1105
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1106/** @brief Keypress handler */
1107static gboolean playlist_window_keypress(GtkWidget attribute((unused)) *widget,
1108 GdkEventKey *event,
1109 gpointer attribute((unused)) user_data) {
1110 if(event->state)
1111 return FALSE;
1112 switch(event->keyval) {
1113 case GDK_Escape:
1114 gtk_widget_destroy(playlist_window);
1115 return TRUE;
1116 default:
1117 return FALSE;
1118 }
1119}
1120
1121/** @brief Called when the playlist window is destroyed */
1122static void playlist_window_destroyed(GtkWidget attribute((unused)) *widget,
1123 GtkWidget **widget_pointer) {
1124 destroy_queuelike(&ql_playlist);
1125 *widget_pointer = NULL;
1126}
1127
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1128/** @brief Initialize playlist support */
1129void playlists_init(void) {
1130 /* We re-get all playlists upon any change... */
b5e60f0d 1131 event_register("playlist-created", playlist_list_update, 0);
b5e60f0d 1132 event_register("playlist-deleted", playlist_list_update, 0);
fc36ecb7 1133 /* ...and on reconnection */
b5e60f0d 1134 event_register("log-connected", playlist_list_update, 0);
fc36ecb7 1135 /* ...and from time to time */
b5e60f0d 1136 event_register("periodic-slow", playlist_list_update, 0);
fc36ecb7 1137 /* ...and at startup */
b5e60f0d 1138 playlist_list_update(0, 0, 0);
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1139
1140 /* Update the playlists menu when the set of playlists changes */
b5e60f0d 1141 event_register("playlists-updated", playlist_menu_changed, 0);
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1142 /* Update the new-playlist OK button when the set of playlists changes */
1143 event_register("playlists-updated", playlist_new_changed, 0);
d9b141cc 1144 /* Update the list of playlists in the edit window when the set changes */
b5e60f0d 1145 event_register("playlists-updated", playlist_picker_fill, 0);
7e702780 1146 /* Update the displayed playlist when it is modified */
7fe2807d 1147 event_register("playlist-modified", playlist_editor_fill, 0);
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1148}
1149
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1150#endif
1151
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1152/*
1153Local Variables:
1154c-basic-offset:2
1155comment-column:40
1156fill-column:79
1157indent-tabs-mode:nil
1158End:
1159*/