+/* Popup to create a new playlist ------------------------------------------- */
+
+/** @brief New-playlist popup */
+static GtkWidget *playlist_new_window;
+
+/** @brief Text entry in new-playlist popup */
+static GtkWidget *playlist_new_entry;
+
+/** @brief Label for displaying feedback on what's wrong */
+static GtkWidget *playlist_new_info;
+
+/** @brief "Shared" radio button */
+static GtkWidget *playlist_new_shared;
+
+/** @brief "Public" radio button */
+static GtkWidget *playlist_new_public;
+
+/** @brief "Private" radio button */
+static GtkWidget *playlist_new_private;
+
+/** @brief Buttons for new-playlist popup */
+static struct button playlist_new_buttons[] = {
+ {
+ .stock = GTK_STOCK_OK,
+ .clicked = playlist_new_ok,
+ .tip = "Create new playlist"
+ },
+ {
+ .stock = GTK_STOCK_CANCEL,
+ .clicked = playlist_new_cancel,
+ .tip = "Do not create new playlist"
+ }
+};
+#define NPLAYLIST_NEW_BUTTONS (sizeof playlist_new_buttons / sizeof *playlist_new_buttons)
+
+/** @brief Pop up a new window to enter the playlist name and details */
+static void playlist_new_playlist(void) {
+ assert(playlist_new_window == NULL);
+ playlist_new_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+ g_signal_connect(playlist_new_window, "destroy",
+ G_CALLBACK(gtk_widget_destroyed), &playlist_new_window);
+ gtk_window_set_title(GTK_WINDOW(playlist_new_window), "Create new playlist");
+ /* Window will be modal, suppressing access to other windows */
+ gtk_window_set_modal(GTK_WINDOW(playlist_new_window), TRUE);
+ gtk_window_set_transient_for(GTK_WINDOW(playlist_new_window),
+ GTK_WINDOW(playlist_window));
+
+ /* Window contents will use a table (grid) layout */
+ GtkWidget *table = gtk_table_new(3, 3, FALSE/*!homogeneous*/);
+
+ /* First row: playlist name */
+ gtk_table_attach_defaults(GTK_TABLE(table),
+ gtk_label_new("Playlist name"),
+ 0, 1, 0, 1);
+ playlist_new_entry = gtk_entry_new();
+ g_signal_connect(playlist_new_entry, "changed",
+ G_CALLBACK(playlist_new_entry_edited), NULL);
+ gtk_table_attach_defaults(GTK_TABLE(table),
+ playlist_new_entry,
+ 1, 3, 0, 1);
+
+ /* Second row: radio buttons to choose type */
+ playlist_new_shared = gtk_radio_button_new_with_label(NULL, "shared");
+ playlist_new_public
+ = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_new_shared),
+ "public");
+ playlist_new_private
+ = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_new_shared),
+ "private");
+ g_signal_connect(playlist_new_shared, "toggled",
+ G_CALLBACK(playlist_new_button_toggled), NULL);
+ g_signal_connect(playlist_new_public, "toggled",
+ G_CALLBACK(playlist_new_button_toggled), NULL);
+ g_signal_connect(playlist_new_private, "toggled",
+ G_CALLBACK(playlist_new_button_toggled), NULL);
+ gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_shared, 0, 1, 1, 2);
+ gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_public, 1, 2, 1, 2);
+ gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_private, 2, 3, 1, 2);
+
+ /* Third row: info bar saying why not */
+ playlist_new_info = gtk_label_new("");
+ gtk_table_attach_defaults(GTK_TABLE(table), playlist_new_info,
+ 0, 3, 2, 3);
+
+ /* Fourth row: ok/cancel buttons */
+ GtkWidget *hbox = create_buttons_box(playlist_new_buttons,
+ NPLAYLIST_NEW_BUTTONS,
+ gtk_hbox_new(FALSE, 0));
+ gtk_table_attach_defaults(GTK_TABLE(table), hbox, 0, 3, 3, 4);
+
+ gtk_container_add(GTK_CONTAINER(playlist_new_window),
+ frame_widget(table, NULL));
+
+ /* Set initial state of OK button */
+ playlist_new_changed(0,0,0);
+
+ g_signal_connect(playlist_new_window, "key-press-event",
+ G_CALLBACK(playlist_new_keypress), 0);
+
+ /* Display the window */
+ gtk_widget_show_all(playlist_new_window);
+}
+
+/** @brief Keypress handler */
+static gboolean playlist_new_keypress(GtkWidget attribute((unused)) *widget,
+ GdkEventKey *event,
+ gpointer attribute((unused)) user_data) {
+ if(event->state)
+ return FALSE;
+ switch(event->keyval) {
+ case GDK_Return:
+ playlist_new_ok(NULL, NULL);
+ return TRUE;
+ case GDK_Escape:
+ gtk_widget_destroy(playlist_new_window);
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+
+/** @brief Called when 'ok' is clicked in new-playlist popup */
+static void playlist_new_ok(GtkButton attribute((unused)) *button,
+ gpointer attribute((unused)) userdata) {
+ if(playlist_new_valid())
+ return;
+ gboolean shared, public, private;
+ char *name, *fullname;
+ playlist_new_details(&name, &fullname, &shared, &public, &private);
+
+ /* We need to:
+ * - lock the playlist
+ * - check it doesn't exist
+ * - set sharing (which will create it empty
+ * - unlock it
+ *
+ * TODO we should freeze the window while this is going on to stop a second
+ * click.
+ */
+ disorder_eclient_playlist_lock(client, playlist_new_locked, fullname,
+ fullname);
+}
+
+/** @brief Called when the proposed new playlist has been locked */
+static void playlist_new_locked(void *v, const char *err) {
+ char *fullname = v;
+ if(err) {
+ popup_protocol_error(0, err);
+ return;
+ }
+ disorder_eclient_playlist_get(client, playlist_new_retrieved,
+ fullname, fullname);
+}
+
+/** @brief Called when the proposed new playlist's contents have been retrieved
+ *
+ * ...or rather, normally, when it's been reported that it does not exist.
+ */
+static void playlist_new_retrieved(void *v, const char *err,
+ int nvec,
+ char attribute((unused)) **vec) {
+ char *fullname = v;
+ if(!err && nvec != -1)
+ /* A rare case but not in principle impossible */
+ err = "A playlist with that name already exists.";
+ if(err) {
+ popup_protocol_error(0, err);
+ disorder_eclient_playlist_unlock(client, playlist_new_unlocked, fullname);
+ return;
+ }
+ gboolean shared, public, private;
+ playlist_new_details(0, 0, &shared, &public, &private);
+ disorder_eclient_playlist_set_share(client, playlist_new_created, fullname,
+ public ? "public"
+ : private ? "private"
+ : "shared",
+ fullname);
+}
+
+/** @brief Called when the new playlist has been created */
+static void playlist_new_created(void attribute((unused)) *v, const char *err) {
+ if(err) {
+ popup_protocol_error(0, err);
+ return;
+ }
+ disorder_eclient_playlist_unlock(client, playlist_new_unlocked, NULL);
+ // TODO arrange for the new playlist to be selected
+}
+
+/** @brief Called when the newly created playlist has unlocked */
+static void playlist_new_unlocked(void attribute((unused)) *v, const char *err) {
+ if(err)
+ popup_protocol_error(0, err);
+ /* Pop down the creation window */
+ gtk_widget_destroy(playlist_new_window);
+}
+
+/** @brief Called when 'cancel' is clicked in new-playlist popup */
+static void playlist_new_cancel(GtkButton attribute((unused)) *button,
+ gpointer attribute((unused)) userdata) {
+ gtk_widget_destroy(playlist_new_window);
+}
+
+/** @brief Called when some radio button in the new-playlist popup changes */
+static void playlist_new_button_toggled(GtkToggleButton attribute((unused)) *tb,
+ gpointer attribute((unused)) userdata) {
+ playlist_new_changed(0,0,0);
+}
+
+/** @brief Called when the text entry field in the new-playlist popup changes */
+static void playlist_new_entry_edited(GtkEditable attribute((unused)) *editable,
+ gpointer attribute((unused)) user_data) {
+ playlist_new_changed(0,0,0);
+}
+
+/** @brief Called to update new playlist window state
+ *
+ * This is called whenever one the text entry or radio buttons changed, and
+ * also when the set of known playlists changes. It determines whether the new
+ * playlist would be creatable and sets the sensitivity of the OK button
+ * and info display accordingly.
+ */
+static void playlist_new_changed(const char attribute((unused)) *event,
+ void attribute((unused)) *eventdata,
+ void attribute((unused)) *callbackdata) {
+ if(!playlist_new_window)
+ return;
+ const char *reason = playlist_new_valid();
+ gtk_widget_set_sensitive(playlist_new_buttons[0].widget,
+ !reason);
+ gtk_label_set_text(GTK_LABEL(playlist_new_info), reason);
+}
+
+/** @brief Test whether the new-playlist window settings are valid
+ * @return NULL on success or an error string if not
+ */
+static const char *playlist_new_valid(void) {
+ gboolean shared, public, private;
+ char *name, *fullname;
+ playlist_new_details(&name, &fullname, &shared, &public, &private);
+ if(!(shared || public || private))
+ return "No type set.";
+ if(!*name)
+ return "";
+ /* See if the result is valid */
+ if(!valid_username(name)
+ || playlist_parse_name(fullname, NULL, NULL))
+ return "Not a valid playlist name.";
+ /* See if the result clashes with an existing name. This is not a perfect
+ * check, the playlist might be created after this point but before we get a
+ * chance to disable the "OK" button. However when we try to create the
+ * playlist we will first try to retrieve it, with a lock held, so we
+ * shouldn't end up overwriting anything. */
+ for(int n = 0; n < nplaylists; ++n)
+ if(!strcmp(playlists[n], fullname)) {
+ if(shared)
+ return "A shared playlist with that name already exists.";
+ else
+ return "You already have a playlist with that name.";
+ }
+ /* As far as we can tell creation would work */
+ return NULL;
+}
+
+/** @brief Get entered new-playlist details
+ * @param namep Where to store entered name (or NULL)
+ * @param fullnamep Where to store computed full name (or NULL)
+ * @param sharep Where to store 'shared' flag (or NULL)
+ * @param publicp Where to store 'public' flag (or NULL)
+ * @param privatep Where to store 'private' flag (or NULL)
+ */
+static void playlist_new_details(char **namep,
+ char **fullnamep,
+ gboolean *sharedp,
+ gboolean *publicp,
+ gboolean *privatep) {
+ gboolean shared, public, private;
+ g_object_get(playlist_new_shared, "active", &shared, (char *)NULL);
+ g_object_get(playlist_new_public, "active", &public, (char *)NULL);
+ g_object_get(playlist_new_private, "active", &private, (char *)NULL);
+ char *gname = gtk_editable_get_chars(GTK_EDITABLE(playlist_new_entry),
+ 0, -1); /* name owned by calle */
+ char *name = xstrdup(gname);
+ g_free(gname);
+ if(sharedp) *sharedp = shared;
+ if(publicp) *publicp = public;
+ if(privatep) *privatep = private;
+ if(namep) *namep = name;
+ if(fullnamep) {
+ if(*sharedp) *fullnamep = *namep;
+ else byte_xasprintf(fullnamep, "%s.%s", config->username, name);
+ }
+}
+
+/* Playlist picker ---------------------------------------------------------- */
+
+/** @brief Delete button */
+static GtkWidget *playlist_picker_delete_button;
+
+/** @brief Tree model for list of playlists */
+static GtkListStore *playlist_picker_list;
+
+/** @brief Selection for list of playlists */
+static GtkTreeSelection *playlist_picker_selection;
+
+/** @brief Currently selected playlist */
+static const char *playlist_picker_selected;
+
+/** @brief (Re-)populate the playlist picker tree model */
+static void playlist_picker_fill(const char attribute((unused)) *event,
+ void attribute((unused)) *eventdata,
+ void attribute((unused)) *callbackdata) {
+ GtkTreeIter iter[1];
+
+ if(!playlist_window)
+ return;
+ if(!playlist_picker_list)
+ playlist_picker_list = gtk_list_store_new(1, G_TYPE_STRING);
+ const char *was_selected = playlist_picker_selected;
+ gtk_list_store_clear(playlist_picker_list); /* clears playlists_selected */
+ for(int n = 0; n < nplaylists; ++n) {
+ gtk_list_store_insert_with_values(playlist_picker_list, iter,
+ n /*position*/,
+ 0, playlists[n], /* column 0 */
+ -1); /* no more cols */
+ /* Reselect the selected playlist */
+ if(was_selected && !strcmp(was_selected, playlists[n]))
+ gtk_tree_selection_select_iter(playlist_picker_selection, iter);
+ }
+ /* TODO deselecting then reselecting the current playlist resets the playlist
+ * editor, which trashes the user's selection. */
+}
+
+/** @brief Called when the selection might have changed */
+static void playlist_picker_selection_changed(GtkTreeSelection attribute((unused)) *treeselection,
+ gpointer attribute((unused)) user_data) {
+ GtkTreeIter iter;
+ char *gselected, *selected;
+
+ /* Identify the current selection */
+ if(gtk_tree_selection_get_selected(playlist_picker_selection, 0, &iter)) {
+ gtk_tree_model_get(GTK_TREE_MODEL(playlist_picker_list), &iter,
+ 0, &gselected, -1);
+ selected = xstrdup(gselected);
+ g_free(gselected);
+ } else
+ selected = 0;
+ /* Set button sensitivity according to the new state */
+ if(selected)
+ gtk_widget_set_sensitive(playlist_picker_delete_button, 1);
+ else
+ gtk_widget_set_sensitive(playlist_picker_delete_button, 0);
+ /* TODO delete should not be sensitive for public playlists owned by other
+ * users */
+ /* Eliminate no-change cases */
+ if(!selected && !playlist_picker_selected)
+ return;
+ if(selected
+ && playlist_picker_selected
+ && !strcmp(selected, playlist_picker_selected))
+ return;
+ /* Record the new state */
+ playlist_picker_selected = selected;
+ /* Re-initalize the queue */
+ ql_new_queue(&ql_playlist, NULL);
+ /* Synthesize a playlist-modified to re-initialize the editor etc */
+ event_raise("playlist-modified", (void *)playlist_picker_selected);
+}
+
+/** @brief Called when the 'add' button is pressed */
+static void playlist_picker_add(GtkButton attribute((unused)) *button,
+ gpointer attribute((unused)) userdata) {
+ /* Unselect whatever is selected TODO why?? */
+ gtk_tree_selection_unselect_all(playlist_picker_selection);
+ playlist_new_playlist();
+}
+
+/** @brief Called when playlist deletion completes */
+static void playlists_picker_delete_completed(void attribute((unused)) *v,
+ const char *err) {
+ if(err)
+ popup_protocol_error(0, err);
+}
+
+/** @brief Called when the 'Delete' button is pressed */
+static void playlist_picker_delete(GtkButton attribute((unused)) *button,
+ gpointer attribute((unused)) userdata) {
+ GtkWidget *yesno;
+ int res;
+
+ if(!playlist_picker_selected)
+ return;
+ yesno = gtk_message_dialog_new(GTK_WINDOW(playlist_window),
+ GTK_DIALOG_MODAL,
+ GTK_MESSAGE_QUESTION,
+ GTK_BUTTONS_YES_NO,
+ "Do you really want to delete playlist %s?"
+ " This action cannot be undone.",
+ playlist_picker_selected);
+ res = gtk_dialog_run(GTK_DIALOG(yesno));
+ gtk_widget_destroy(yesno);
+ if(res == GTK_RESPONSE_YES) {
+ disorder_eclient_playlist_delete(client,
+ playlists_picker_delete_completed,
+ playlist_picker_selected,
+ NULL);
+ }
+}
+
+/** @brief Table of buttons below the playlist list */
+static struct button playlist_picker_buttons[] = {
+ {
+ GTK_STOCK_ADD,
+ playlist_picker_add,
+ "Create a new playlist",
+ 0
+ },
+ {
+ GTK_STOCK_REMOVE,
+ playlist_picker_delete,
+ "Delete a playlist",
+ 0
+ },
+};
+#define NPLAYLIST_PICKER_BUTTONS (sizeof playlist_picker_buttons / sizeof *playlist_picker_buttons)
+
+/** @brief Create the list of playlists for the edit playlists window */
+static GtkWidget *playlist_picker_create(void) {
+ /* Create the list of playlist and populate it */
+ playlist_picker_fill(NULL, NULL, NULL);
+ /* Create the tree view */
+ GtkWidget *tree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(playlist_picker_list));
+ /* ...and the renderers for it */
+ GtkCellRenderer *cr = gtk_cell_renderer_text_new();
+ GtkTreeViewColumn *col = gtk_tree_view_column_new_with_attributes("Playlist",
+ cr,
+ "text", 0,
+ NULL);
+ gtk_tree_view_append_column(GTK_TREE_VIEW(tree), col);
+ /* Get the selection for the view; set its mode; arrange for a callback when
+ * it changes */
+ playlist_picker_selected = NULL;
+ playlist_picker_selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree));
+ gtk_tree_selection_set_mode(playlist_picker_selection, GTK_SELECTION_BROWSE);
+ g_signal_connect(playlist_picker_selection, "changed",
+ G_CALLBACK(playlist_picker_selection_changed), NULL);
+
+ /* Create the control buttons */
+ GtkWidget *buttons = create_buttons_box(playlist_picker_buttons,
+ NPLAYLIST_PICKER_BUTTONS,
+ gtk_hbox_new(FALSE, 1));
+ playlist_picker_delete_button = playlist_picker_buttons[1].widget;
+
+ playlist_picker_selection_changed(NULL, NULL);
+
+ /* Buttons live below the list */
+ GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(vbox), scroll_widget(tree), TRUE/*expand*/, TRUE/*fill*/, 0);
+ gtk_box_pack_start(GTK_BOX(vbox), buttons, FALSE/*expand*/, FALSE, 0);
+
+ g_signal_connect(tree, "key-press-event",
+ G_CALLBACK(playlist_picker_keypress), 0);
+
+ return vbox;
+}
+
+static gboolean playlist_picker_keypress(GtkWidget attribute((unused)) *widget,
+ GdkEventKey *event,
+ gpointer attribute((unused)) user_data) {
+ if(event->state)
+ return FALSE;
+ switch(event->keyval) {
+ case GDK_BackSpace:
+ case GDK_Delete:
+ playlist_picker_delete(NULL, NULL);
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+
+static void playlist_picker_destroy(void) {
+ playlist_picker_delete_button = NULL;
+ g_object_unref(playlist_picker_list);
+ playlist_picker_list = NULL;
+ playlist_picker_selection = NULL;
+ playlist_picker_selected = NULL;
+}
+
+/* Playlist editor ---------------------------------------------------------- */
+
+static GtkWidget *playlist_editor_shared;
+static GtkWidget *playlist_editor_public;
+static GtkWidget *playlist_editor_private;
+static int playlist_editor_setting_buttons;
+
+static GtkWidget *playlists_editor_create(void) {
+ assert(ql_playlist.view == NULL); /* better not be set up already */
+
+ GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
+ playlist_editor_shared = gtk_radio_button_new_with_label(NULL, "shared");
+ playlist_editor_public
+ = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_editor_shared),
+ "public");
+ playlist_editor_private
+ = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(playlist_editor_shared),
+ "private");
+ g_signal_connect(playlist_editor_public, "toggled",
+ G_CALLBACK(playlist_editor_button_toggled),
+ (void *)"public");
+ g_signal_connect(playlist_editor_private, "toggled",
+ G_CALLBACK(playlist_editor_button_toggled),
+ (void *)"private");
+ gtk_box_pack_start(GTK_BOX(hbox), playlist_editor_shared,
+ FALSE/*expand*/, FALSE/*fill*/, 0);
+ gtk_box_pack_start(GTK_BOX(hbox), playlist_editor_public,
+ FALSE/*expand*/, FALSE/*fill*/, 0);
+ gtk_box_pack_start(GTK_BOX(hbox), playlist_editor_private,
+ FALSE/*expand*/, FALSE/*fill*/, 0);
+ playlist_editor_set_buttons(0,0,0);
+
+ GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(vbox), init_queuelike(&ql_playlist),
+ TRUE/*expand*/, TRUE/*fill*/, 0);
+ gtk_box_pack_start(GTK_BOX(vbox), hbox,
+ FALSE/*expand*/, FALSE/*fill*/, 0);
+ return vbox;
+}
+
+/** @brief Called when the public/private buttons are set */
+static void playlist_editor_button_toggled(GtkToggleButton *tb,
+ gpointer userdata) {
+ const char *state = userdata;
+ if(!gtk_toggle_button_get_active(tb)
+ || !playlist_picker_selected
+ || playlist_editor_setting_buttons)
+ return;
+ disorder_eclient_playlist_set_share(client, playlist_editor_share_set,
+ playlist_picker_selected, state, NULL);
+}
+
+static void playlist_editor_share_set(void attribute((unused)) *v,
+ const attribute((unused)) char *err) {
+ if(err)
+ popup_protocol_error(0, err);
+}
+
+/** @brief Set the editor button state and sensitivity */
+static void playlist_editor_set_buttons(const char attribute((unused)) *event,
+ void *eventdata,
+ void attribute((unused)) *callbackdata) {
+ /* If this event is for a non-selected playlist do nothing */
+ if(eventdata
+ && playlist_picker_selected
+ && strcmp(eventdata, playlist_picker_selected))
+ return;
+ if(playlist_picker_selected) {
+ if(strchr(playlist_picker_selected, '.'))
+ disorder_eclient_playlist_get_share(client,
+ playlist_editor_got_share,
+ playlist_picker_selected,
+ (void *)playlist_picker_selected);
+ else
+ playlist_editor_got_share((void *)playlist_picker_selected, NULL,
+ "shared");
+ } else
+ playlist_editor_got_share(NULL, NULL, NULL);
+}
+
+/** @brief Called with playlist sharing details */
+static void playlist_editor_got_share(void *v,
+ const char *err,
+ const char *value) {
+ const char *playlist = v;
+ if(err) {
+ popup_protocol_error(0, err);
+ value = NULL;
+ }
+ /* Set the currently active button */
+ ++playlist_editor_setting_buttons;
+ gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(playlist_editor_shared),
+ value && !strcmp(value, "shared"));
+ gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(playlist_editor_public),
+ value && !strcmp(value, "public"));
+ gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(playlist_editor_private),
+ value && !strcmp(value, "private"));
+ /* Set button sensitivity */
+ gtk_widget_set_sensitive(playlist_editor_shared, FALSE);
+ int sensitive = (playlist
+ && strchr(playlist, '.')
+ && !strncmp(playlist, config->username,
+ strlen(config->username)));
+ gtk_widget_set_sensitive(playlist_editor_public, sensitive);
+ gtk_widget_set_sensitive(playlist_editor_private, sensitive);
+ --playlist_editor_setting_buttons;
+}
+
+/** @brief (Re-)populate the playlist tree model */
+static void playlist_editor_fill(const char attribute((unused)) *event,
+ void *eventdata,
+ void attribute((unused)) *callbackdata) {
+ const char *modified_playlist = eventdata;
+ if(!playlist_window)
+ return;
+ if(!playlist_picker_selected)
+ return;
+ if(!strcmp(playlist_picker_selected, modified_playlist))
+ disorder_eclient_playlist_get(client, playlists_editor_received_tracks,
+ playlist_picker_selected,
+ (void *)playlist_picker_selected);
+}
+
+/** @brief Called with new tracks for the playlist */
+static void playlists_editor_received_tracks(void *v,
+ const char *err,
+ int nvec, char **vec) {
+ const char *playlist = v;
+ if(err) {
+ popup_protocol_error(0, err);
+ return;
+ }
+ if(!playlist_picker_selected
+ || strcmp(playlist, playlist_picker_selected)) {
+ /* The tracks are for the wrong playlist - something must have changed
+ * while the fetch command was in flight. We just ignore this callback,
+ * the right answer will be requested and arrive in due course. */
+ return;
+ }
+ if(nvec == -1)
+ /* No such playlist, presumably we'll get a deleted event shortly */
+ return;
+ /* Translate the list of tracks into queue entries */
+ struct queue_entry *newq, **qq = &newq, *qprev = NULL;
+ hash *h = hash_new(sizeof(int));
+ for(int n = 0; n < nvec; ++n) {
+ struct queue_entry *q = xmalloc(sizeof *q);
+ q->prev = qprev;
+ q->track = vec[n];
+ /* Synthesize a unique ID so that the selection survives updates. Tracks
+ * can appear more than once in the queue so we can't use raw track names,
+ * so we add a serial number to the start. */
+ int *serialp = hash_find(h, vec[n]), serial = serialp ? *serialp : 0;
+ byte_xasprintf((char **)&q->id, "%d-%s", serial++, vec[n]);
+ hash_add(h, vec[n], &serial, HASH_INSERT_OR_REPLACE);
+ *qq = q;
+ qq = &q->next;
+ qprev = q;
+ }
+ *qq = NULL;
+ ql_new_queue(&ql_playlist, newq);
+}
+
+/* Playlist mutation -------------------------------------------------------- */
+
+/** @brief State structure for guarded playlist modification
+ *
+ * To safely move, insert or delete rows we must:
+ * - take a lock
+ * - fetch the playlist
+ * - verify it's not changed
+ * - update the playlist contents
+ * - store the playlist
+ * - release the lock
+ *
+ * The playlist_modify_ functions do just that.
+ *
+ * To kick things off create one of these and disorder_eclient_playlist_lock()
+ * with playlist_modify_locked() as its callback. @c modify will be called; it
+ * should disorder_eclient_playlist_set() to set the new state with
+ * playlist_modify_updated() as its callback.
+ */
+struct playlist_modify_data {
+ /** @brief Affected playlist */
+ const char *playlist;
+ /** @brief Modification function
+ * @param mod Pointer back to state structure
+ * @param ntracks Length of playlist
+ * @param tracks Tracks in playlist
+ */
+ void (*modify)(struct playlist_modify_data *mod,
+ int ntracks, char **tracks);
+
+ /** @brief Number of tracks dropped */
+ int ntracks;
+ /** @brief Track names dropped */
+ char **tracks;
+ /** @brief Track IDs dropped */
+ char **ids;
+ /** @brief Drop after this point */
+ struct queue_entry *after_me;
+};
+
+/** @brief Called with playlist locked
+ *
+ * This is the entry point for guarded modification ising @ref
+ * playlist_modify_data.
+ */
+static void playlist_modify_locked(void *v, const char *err) {
+ struct playlist_modify_data *mod = v;
+ if(err) {
+ popup_protocol_error(0, err);
+ return;
+ }
+ disorder_eclient_playlist_get(client, playlist_modify_retrieved,
+ mod->playlist, mod);
+}
+
+/** @brief Called with current playlist contents
+ * Checks that the playlist is still current and has not changed.
+ */
+void playlist_modify_retrieved(void *v, const char *err,
+ int nvec,
+ char **vec) {
+ struct playlist_modify_data *mod = v;
+ if(err) {
+ popup_protocol_error(0, err);
+ disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
+ return;
+ }
+ if(nvec < 0
+ || !playlist_picker_selected
+ || strcmp(mod->playlist, playlist_picker_selected)) {
+ disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
+ return;
+ }
+ /* We check that the contents haven't changed. If they have we just abandon
+ * the operation. The user will have to try again. */
+ struct queue_entry *q;
+ int n;
+ for(n = 0, q = ql_playlist.q; q && n < nvec; ++n, q = q->next)
+ if(strcmp(q->track, vec[n]))
+ break;
+ if(n != nvec || q != NULL) {
+ disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
+ return;
+ }
+ mod->modify(mod, nvec, vec);
+}
+
+/** @brief Called when the playlist has been updated */
+static void playlist_modify_updated(void attribute((unused)) *v,
+ const char *err) {
+ if(err)
+ popup_protocol_error(0, err);
+ disorder_eclient_playlist_unlock(client, playlist_modify_unlocked, NULL);
+}
+
+/** @brief Called when the playlist has been unlocked */
+static void playlist_modify_unlocked(void attribute((unused)) *v,
+ const char *err) {
+ if(err)
+ popup_protocol_error(0, err);
+}
+
+/* Drop tracks into a playlist ---------------------------------------------- */
+
+static void playlist_drop(struct queuelike attribute((unused)) *ql,
+ int ntracks,
+ char **tracks, char **ids,
+ struct queue_entry *after_me) {
+ struct playlist_modify_data *mod = xmalloc(sizeof *mod);
+
+ mod->playlist = playlist_picker_selected;
+ mod->modify = playlist_drop_modify;
+ mod->ntracks = ntracks;
+ mod->tracks = tracks;
+ mod->ids = ids;
+ mod->after_me = after_me;
+ disorder_eclient_playlist_lock(client, playlist_modify_locked,
+ mod->playlist, mod);
+}
+
+/** @brief Return true if track @p i is in the moved set */
+static int playlist_drop_is_moved(struct playlist_modify_data *mod,
+ int i) {
+ struct queue_entry *q;
+
+ /* Find the q corresponding to i, so we can get the ID */
+ for(q = ql_playlist.q; i; q = q->next, --i)
+ ;
+ /* See if track i matches any of the moved set by ID */
+ for(int n = 0; n < mod->ntracks; ++n)
+ if(!strcmp(q->id, mod->ids[n]))
+ return 1;
+ return 0;
+}
+
+static void playlist_drop_modify(struct playlist_modify_data *mod,
+ int nvec, char **vec) {
+ char **newvec;
+ int nnewvec;
+
+ //fprintf(stderr, "\nplaylist_drop_modify\n");
+ /* after_me is the queue_entry to insert after, or NULL to insert at the
+ * beginning (including the case when the playlist is empty) */
+ //fprintf(stderr, "after_me = %s\n",
+ // mod->after_me ? mod->after_me->track : "NULL");
+ struct queue_entry *q = ql_playlist.q;
+ int ins = 0;
+ if(mod->after_me) {
+ ++ins;
+ while(q && q != mod->after_me) {
+ q = q->next;
+ ++ins;
+ }
+ }
+ /* Now ins is the index to insert at; equivalently, the row to insert before,
+ * and so equal to nvec to append. */
+#if 0
+ fprintf(stderr, "ins = %d = %s\n",
+ ins, ins < nvec ? vec[ins] : "NULL");
+ for(int n = 0; n < nvec; ++n)
+ fprintf(stderr, "%d: %s %s\n", n, n == ins ? "->" : " ", vec[n]);
+ fprintf(stderr, "nvec = %d\n", nvec);
+#endif
+ if(mod->ids) {
+ /* This is a rearrangement */
+ /* We have:
+ * - vec[], the current layout
+ * - ins, pointing into vec
+ * - mod->tracks[], a subset of vec[] which is to be moved
+ *
+ * ins is the insertion point BUT it is in terms of the whole
+ * array, i.e. before mod->tracks[] have been removed. The first
+ * step then is to remove everything in mod->tracks[] and adjust
+ * ins downwards as necessary.
+ */
+ /* First zero out anything that's moved */
+ int before_ins = 0;
+ for(int n = 0; n < nvec; ++n) {
+ if(playlist_drop_is_moved(mod, n)) {
+ vec[n] = NULL;
+ if(n < ins)
+ ++before_ins;
+ }
+ }
+ /* Now collapse down the array */
+ int i = 0;
+ for(int n = 0; n < nvec; ++n) {
+ if(vec[n])
+ vec[i++] = vec[n];
+ }
+ assert(i + mod->ntracks == nvec);
+ nvec = i;
+ /* Adjust the insertion point to take account of things moved from before
+ * it */
+ ins -= before_ins;
+ /* The effect is now the same as an insertion */
+ }
+ /* This is (now) an insertion */
+ nnewvec = nvec + mod->ntracks;
+ newvec = xcalloc(nnewvec, sizeof (char *));
+ memcpy(newvec, vec,
+ ins * sizeof (char *));
+ memcpy(newvec + ins, mod->tracks,
+ mod->ntracks * sizeof (char *));
+ memcpy(newvec + ins + mod->ntracks, vec + ins,
+ (nvec - ins) * sizeof (char *));
+ disorder_eclient_playlist_set(client, playlist_modify_updated, mod->playlist,
+ newvec, nnewvec, mod);
+}
+
+/* Playlist editor right-click menu ---------------------------------------- */
+
+/** @brief Called to determine whether the playlist is playable */
+static int playlist_playall_sensitive(void attribute((unused)) *extra) {
+ /* If there's no playlist obviously we can't play it */
+ if(!playlist_picker_selected)
+ return FALSE;
+ /* If it's empty we can't play it */
+ if(!ql_playlist.q)
+ return FALSE;
+ /* Otherwise we can */
+ return TRUE;
+}
+
+/** @brief Called to play the selected playlist */
+static void playlist_playall_activate(GtkMenuItem attribute((unused)) *menuitem,
+ gpointer attribute((unused)) user_data) {
+ if(!playlist_picker_selected)
+ return;
+ /* Re-use the menu-based activation callback */
+ disorder_eclient_playlist_get(client, playlist_menu_received_content,
+ playlist_picker_selected, NULL);
+}
+
+/** @brief Called to determine whether the playlist is playable */
+static int playlist_remove_sensitive(void attribute((unused)) *extra) {
+ /* If there's no playlist obviously we can't remove from it */
+ if(!playlist_picker_selected)
+ return FALSE;
+ /* If no tracks are selected we cannot remove them */
+ if(!gtk_tree_selection_count_selected_rows(ql_playlist.selection))
+ return FALSE;
+ /* We're good to go */
+ return TRUE;
+}
+
+/** @brief Called to remove the selected playlist */
+static void playlist_remove_activate(GtkMenuItem attribute((unused)) *menuitem,
+ gpointer attribute((unused)) user_data) {
+ if(!playlist_picker_selected)
+ return;
+ struct playlist_modify_data *mod = xmalloc(sizeof *mod);
+
+ mod->playlist = playlist_picker_selected;
+ mod->modify = playlist_remove_modify;
+ disorder_eclient_playlist_lock(client, playlist_modify_locked,
+ mod->playlist, mod);
+}
+
+static void playlist_remove_modify(struct playlist_modify_data *mod,
+ int attribute((unused)) nvec, char **vec) {
+ GtkTreeIter iter[1];
+ gboolean it = gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ql_playlist.store),
+ iter);
+ int n = 0, m = 0;
+ while(it) {
+ if(!gtk_tree_selection_iter_is_selected(ql_playlist.selection, iter))
+ vec[m++] = vec[n++];
+ else
+ n++;
+ it = gtk_tree_model_iter_next(GTK_TREE_MODEL(ql_playlist.store), iter);
+ }
+ disorder_eclient_playlist_set(client, playlist_modify_updated, mod->playlist,
+ vec, m, mod);
+}
+
+/* Playlists window --------------------------------------------------------- */
+
+/** @brief Pop up the playlists window
+ *
+ * Called when the playlists menu item is selected
+ */
+void playlist_window_create(gpointer attribute((unused)) callback_data,
+ guint attribute((unused)) callback_action,
+ GtkWidget attribute((unused)) *menu_item) {
+ /* If the window already exists, raise it */
+ if(playlist_window) {
+ gtk_window_present(GTK_WINDOW(playlist_window));
+ return;
+ }
+ /* Create the window */
+ playlist_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+ gtk_widget_set_style(playlist_window, tool_style);
+ g_signal_connect(playlist_window, "destroy",
+ G_CALLBACK(playlist_window_destroyed), &playlist_window);
+ gtk_window_set_title(GTK_WINDOW(playlist_window), "Playlists Management");
+ /* TODO loads of this is very similar to (copied from!) users.c - can we
+ * de-dupe? */
+ /* Keyboard shortcuts */
+ g_signal_connect(playlist_window, "key-press-event",
+ G_CALLBACK(playlist_window_keypress), 0);
+ /* default size is too small */
+ gtk_window_set_default_size(GTK_WINDOW(playlist_window), 640, 320);
+
+ GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(hbox), playlist_picker_create(),
+ FALSE/*expand*/, FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(hbox), gtk_event_box_new(),
+ FALSE/*expand*/, FALSE, 2);
+ gtk_box_pack_start(GTK_BOX(hbox), playlists_editor_create(),
+ TRUE/*expand*/, TRUE/*fill*/, 0);
+
+ gtk_container_add(GTK_CONTAINER(playlist_window), frame_widget(hbox, NULL));
+ gtk_widget_show_all(playlist_window);
+}
+
+/** @brief Keypress handler */
+static gboolean playlist_window_keypress(GtkWidget attribute((unused)) *widget,
+ GdkEventKey *event,
+ gpointer attribute((unused)) user_data) {
+ if(event->state)
+ return FALSE;
+ switch(event->keyval) {
+ case GDK_Escape:
+ gtk_widget_destroy(playlist_window);
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+
+/** @brief Called when the playlist window is destroyed */
+static void playlist_window_destroyed(GtkWidget attribute((unused)) *widget,
+ GtkWidget **widget_pointer) {
+ destroy_queuelike(&ql_playlist);
+ playlist_picker_destroy();
+ *widget_pointer = NULL;