X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/6acdbba4d904b8ee764f0d564675357a46d43fa8..444be90901ad09e78d0ff2a92872f43a510f5425:/disobedience/playlists.c diff --git a/disobedience/playlists.c b/disobedience/playlists.c index add990d..4d4194e 100644 --- a/disobedience/playlists.c +++ b/disobedience/playlists.c @@ -1,6 +1,6 @@ /* * This file is part of DisOrder - * Copyright (C) 2008 Richard Kettlewell + * Copyright (C) 2008, 2009 Richard Kettlewell * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -18,14 +18,178 @@ * USA */ /** @file disobedience/playlists.c - * @brief Playlist for Disobedience + * @brief Playlist support for Disobedience + * + * The playlists management window contains: + * - the playlist picker (a list of all playlists) TODO should be a tree! + * - an add button + * - a delete button + * - the playlist editor (a d+d-capable view of the currently picked playlist) + * - a close button TODO + * + * This file also maintains the playlist menu, allowing playlists to be + * activated from the main window's menu. + * + * Internally we maintain the playlist list, which is just the current list of + * playlists. Changes to this are reflected in the playlist menu and the + * playlist picker. * */ #include "disobedience.h" +#include "queue-generic.h" +#include "popup.h" +#include "validity.h" + +static void playlist_list_received_playlists(void *v, + const char *err, + int nvec, char **vec); +static void playlist_editor_fill(const char *event, + void *eventdata, + void *callbackdata); +static int playlist_playall_sensitive(void *extra); +static void playlist_playall_activate(GtkMenuItem *menuitem, + gpointer user_data); +static int playlist_remove_sensitive(void *extra) ; +static void playlist_remove_activate(GtkMenuItem *menuitem, + gpointer user_data); +static void playlist_new_locked(void *v, const char *err); +static void playlist_new_retrieved(void *v, const char *err, + int nvec, + char **vec); +static void playlist_new_created(void *v, const char *err); +static void playlist_new_unlocked(void *v, const char *err); +static void playlist_new_entry_edited(GtkEditable *editable, + gpointer user_data); +static void playlist_new_button_toggled(GtkToggleButton *tb, + gpointer userdata); +static void playlist_new_changed(const char *event, + void *eventdata, + void *callbackdata); +static const char *playlist_new_valid(void); +static void playlist_new_details(char **namep, + char **fullnamep, + gboolean *sharedp, + gboolean *publicp, + gboolean *privatep); +static void playlist_new_ok(GtkButton *button, + gpointer userdata); +static void playlist_new_cancel(GtkButton *button, + gpointer userdata); +static void playlists_editor_received_tracks(void *v, + const char *err, + int nvec, char **vec); +static void playlist_window_destroyed(GtkWidget *widget, + GtkWidget **widget_pointer); +static gboolean playlist_window_keypress(GtkWidget *widget, + GdkEventKey *event, + gpointer user_data); +static int playlistcmp(const void *ap, const void *bp); +static void playlist_modify_locked(void *v, const char *err); +void playlist_modify_retrieved(void *v, const char *err, + int nvec, + char **vec); +static void playlist_modify_updated(void *v, const char *err); +static void playlist_modify_unlocked(void *v, const char *err); +static void playlist_drop(struct queuelike *ql, + int ntracks, + char **tracks, char **ids, + struct queue_entry *after_me); +struct playlist_modify_data; +static void playlist_drop_modify(struct playlist_modify_data *mod, + int nvec, char **vec); +static void playlist_remove_modify(struct playlist_modify_data *mod, + int nvec, char **vec); +static gboolean playlist_new_keypress(GtkWidget *widget, + GdkEventKey *event, + gpointer user_data); +static gboolean playlist_picker_keypress(GtkWidget *widget, + GdkEventKey *event, + gpointer user_data); +static void playlist_editor_button_toggled(GtkToggleButton *tb, + gpointer userdata); +static void playlist_editor_set_buttons(const char *event, + void *eventdata, + void *callbackdata); +static void playlist_editor_got_share(void *v, + const char *err, + const char *value); +static void playlist_editor_share_set(void *v, const char *err); +static void playlist_picker_update_section(const char *title, const char *key, + int start, int end); +static gboolean playlist_picker_find(GtkTreeIter *parent, + const char *title, const char *key, + GtkTreeIter iter[1], + gboolean create); +static void playlist_picker_delete_obsolete(GtkTreeIter parent[1], + char **exists, + int nexists); +static gboolean playlist_picker_button(GtkWidget *widget, + GdkEventButton *event, + gpointer user_data); +static gboolean playlist_editor_keypress(GtkWidget *widget, + GdkEventKey *event, + gpointer user_data); +static void playlist_editor_ok(GtkButton *button, gpointer userdata); +static void playlist_editor_help(GtkButton *button, gpointer userdata); + +/** @brief Playlist editing window */ +static GtkWidget *playlist_window; -static void playlists_updated(void *v, - const char *err, - int nvec, char **vec); +/** @brief Columns for the playlist editor */ +static const struct queue_column playlist_columns[] = { + { "Artist", column_namepart, "artist", COL_EXPAND|COL_ELLIPSIZE }, + { "Album", column_namepart, "album", COL_EXPAND|COL_ELLIPSIZE }, + { "Title", column_namepart, "title", COL_EXPAND|COL_ELLIPSIZE }, +}; + +/** @brief Pop-up menu for playlist editor + * + * Status: + * - track properties works but, bizarrely, raises the main window + * - play track works + * - play playlist works + * - select/deselect all work + */ +static struct menuitem playlist_menuitems[] = { + { "Track properties", GTK_STOCK_PROPERTIES, ql_properties_activate, ql_properties_sensitive, 0, 0 }, + { "Play track", GTK_STOCK_MEDIA_PLAY, ql_play_activate, ql_play_sensitive, 0, 0 }, + { "Play playlist", NULL, playlist_playall_activate, playlist_playall_sensitive, 0, 0 }, + { "Remove track from playlist", GTK_STOCK_DELETE, playlist_remove_activate, playlist_remove_sensitive, 0, 0 }, + { "Select all tracks", GTK_STOCK_SELECT_ALL, ql_selectall_activate, ql_selectall_sensitive, 0, 0 }, + { "Deselect all tracks", NULL, ql_selectnone_activate, ql_selectnone_sensitive, 0, 0 }, +}; + +static const GtkTargetEntry playlist_targets[] = { + { + PLAYLIST_TRACKS, /* drag type */ + GTK_TARGET_SAME_WIDGET, /* rearrangement within a widget */ + PLAYLIST_TRACKS_ID /* ID value */ + }, + { + PLAYABLE_TRACKS, /* drag type */ + GTK_TARGET_SAME_APP|GTK_TARGET_OTHER_WIDGET, /* copying between widgets */ + PLAYABLE_TRACKS_ID, /* ID value */ + }, + { + .target = NULL + } +}; + +/** @brief Queuelike for editing a playlist */ +static struct queuelike ql_playlist = { + .name = "playlist", + .columns = playlist_columns, + .ncolumns = sizeof playlist_columns / sizeof *playlist_columns, + .menuitems = playlist_menuitems, + .nmenuitems = sizeof playlist_menuitems / sizeof *playlist_menuitems, + .drop = playlist_drop, + .drag_source_targets = playlist_targets, + .drag_source_actions = GDK_ACTION_MOVE|GDK_ACTION_COPY, + .drag_dest_targets = playlist_targets, + .drag_dest_actions = GDK_ACTION_MOVE|GDK_ACTION_COPY, +}; + +/* Maintaining the list of playlists ---------------------------------------- */ /** @brief Current list of playlists or NULL */ char **playlists; @@ -33,11 +197,31 @@ char **playlists; /** @brief Count of playlists */ int nplaylists; -/** @brief Schedule an update to the list of playlists */ -static void playlists_update(const char attribute((unused)) *event, - void attribute((unused)) *eventdata, - void attribute((unused)) *callbackdata) { - disorder_eclient_playlists(client, playlists_updated, 0); +/** @brief Schedule an update to the list of playlists + * + * Called periodically and when a playlist is created or deleted. + */ +static void playlist_list_update(const char attribute((unused)) *event, + void attribute((unused)) *eventdata, + void attribute((unused)) *callbackdata) { + disorder_eclient_playlists(client, playlist_list_received_playlists, 0); +} + +/** @brief Called with a new list of playlists */ +static void playlist_list_received_playlists(void attribute((unused)) *v, + const char *err, + int nvec, char **vec) { + if(err) { + playlists = 0; + nplaylists = -1; + /* Probably means server does not support playlists */ + } else { + playlists = vec; + nplaylists = nvec; + qsort(playlists, nplaylists, sizeof (char *), playlistcmp); + } + /* Tell our consumers */ + event_raise("playlists-updated", 0); } /** @brief qsort() callback for playlist name comparison */ @@ -66,75 +250,1379 @@ static int playlistcmp(const void *ap, const void *bp) { return strcmp(a, b); } -/** @brief Called with a new list of playlists */ -static void playlists_updated(void attribute((unused)) *v, - const char *err, - int nvec, char **vec) { +/* Playlists menu ----------------------------------------------------------- */ + +static void playlist_menu_playing(void attribute((unused)) *v, + const char *err) { + if(err) + popup_submsg(playlist_window, GTK_MESSAGE_ERROR, err); +} + +/** @brief Play received playlist contents + * + * Passed as a completion callback by menu_activate_playlist(). + */ +static void playlist_menu_received_content(void attribute((unused)) *v, + const char *err, + int nvec, char **vec) { if(err) { - playlists = 0; - nplaylists = -1; - /* Probably means server does not support playlists */ - } else { - playlists = vec; - nplaylists = nvec; - qsort(playlists, nplaylists, sizeof (char *), playlistcmp); + popup_submsg(playlist_window, GTK_MESSAGE_ERROR, err); + return; } - /* Tell our consumers */ - event_raise("playlists-updated", 0); + for(int n = 0; n < nvec; ++n) + disorder_eclient_play(client, vec[n], playlist_menu_playing, NULL); } -/** @brief Called to activate a playlist */ -static void menu_activate_playlist(GtkMenuItem *menuitem, +/** @brief Called to activate a playlist + * + * Called when the menu item for a playlist is clicked. + */ +static void playlist_menu_activate(GtkMenuItem *menuitem, gpointer attribute((unused)) user_data) { GtkLabel *label = GTK_LABEL(GTK_BIN(menuitem)->child); const char *playlist = gtk_label_get_text(label); - fprintf(stderr, "activate playlist %s\n", playlist); /* TODO */ + disorder_eclient_playlist_get(client, playlist_menu_received_content, + playlist, NULL); } -/** @brief Called when the playlists change */ -static void menu_playlists_changed(const char attribute((unused)) *event, - void attribute((unused)) *eventdata, - void attribute((unused)) *callbackdata) { +/** @brief Called when the playlists change + * + * Naively refills the menu. The results might be unsettling if the menu is + * currently open, but this is hopefuly fairly rare. + */ +static void playlist_menu_changed(const char attribute((unused)) *event, + void attribute((unused)) *eventdata, + void attribute((unused)) *callbackdata) { if(!playlists_menu) return; /* OMG too soon */ GtkMenuShell *menu = GTK_MENU_SHELL(playlists_menu); - /* TODO: we could be more sophisticated and only insert/remove widgets as - * needed. For now that's too much effort. */ while(menu->children) gtk_container_remove(GTK_CONTAINER(menu), GTK_WIDGET(menu->children->data)); /* NB nplaylists can be -1 as well as 0 */ for(int n = 0; n < nplaylists; ++n) { GtkWidget *w = gtk_menu_item_new_with_label(playlists[n]); - g_signal_connect(w, "activate", G_CALLBACK(menu_activate_playlist), 0); + g_signal_connect(w, "activate", G_CALLBACK(playlist_menu_activate), 0); gtk_widget_show(w); gtk_menu_shell_append(menu, w); } - gtk_widget_set_sensitive(playlists_widget, + gtk_widget_set_sensitive(menu_playlists_widget, nplaylists > 0); - gtk_widget_set_sensitive(editplaylists_widget, + gtk_widget_set_sensitive(menu_editplaylists_widget, nplaylists >= 0); } - void edit_playlists(gpointer attribute((unused)) callback_data, - guint attribute((unused)) callback_action, - GtkWidget attribute((unused)) *menu_item) { - fprintf(stderr, "edit playlists\n"); /* TODO */ +/* 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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 + * + * This has two columns: + * - column 0 will be the display name + * - column 1 will be the sort key/playlist name (and will not be displayed) + */ +static GtkTreeStore *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) { + if(!playlist_window) + return; + if(!playlist_picker_list) + playlist_picker_list = gtk_tree_store_new(2, G_TYPE_STRING, G_TYPE_STRING); + /* We will accumulate a list of all the sections that exist */ + char **sections = xcalloc(nplaylists, sizeof (char *)); + int nsections = 0; + /* Make sure shared playlists are there */ + int start = 0, end; + for(end = start; end < nplaylists && !strchr(playlists[end], '.'); ++end) + ; + if(start != end) { + playlist_picker_update_section("Shared playlists", "", + start, end); + sections[nsections++] = (char *)""; + } + /* Make sure owned playlists are there */ + while((start = end) < nplaylists) { + const int nl = strchr(playlists[start], '.') - playlists[start]; + char *name = xstrndup(playlists[start], nl); + for(end = start; + end < nplaylists + && playlists[end][nl] == '.' + && !strncmp(playlists[start], playlists[end], nl); + ++end) + ; + playlist_picker_update_section(name, name, start, end); + sections[nsections++] = name; + } + /* Delete obsolete sections */ + playlist_picker_delete_obsolete(NULL, sections, nsections); +} + +/** @brief Update a section in the picker tree model + * @param section Section name + * @param start First entry in @ref playlists + * @param end Past last entry in @ref playlists + */ +static void playlist_picker_update_section(const char *title, const char *key, + int start, int end) { + /* Find the section, creating it if necessary */ + GtkTreeIter section_iter[1]; + playlist_picker_find(NULL, title, key, section_iter, TRUE); + /* Add missing rows */ + for(int n = start; n < end; ++n) { + GtkTreeIter child[1]; + char *name; + if((name = strchr(playlists[n], '.'))) + ++name; + else + name = playlists[n]; + playlist_picker_find(section_iter, + name, playlists[n], + child, + TRUE); + } + /* Delete anything that shouldn't exist. */ + playlist_picker_delete_obsolete(section_iter, playlists + start, end - start); +} + +/** @brief Find and maybe create a row in the picker tree model + * @param parent Parent iterator (or NULL for top level) + * @param title Display name of section + * @param key Key to search for + * @param iter Iterator to point at key + * @param create If TRUE, key will be created if it doesn't exist + * @param compare Row comparison function + * @return TRUE if key exists else FALSE + * + * If the @p key exists then @p iter will point to it and TRUE will be + * returned. + * + * If the @p key does not exist and @p create is TRUE then it will be created. + * @p iter wil point to it and TRUE will be returned. + * + * If the @p key does not exist and @p create is FALSE then FALSE will be + * returned. + */ +static gboolean playlist_picker_find(GtkTreeIter *parent, + const char *title, + const char *key, + GtkTreeIter iter[1], + gboolean create) { + gchar *candidate; + GtkTreeIter next[1]; + gboolean it; + int row = 0; + + it = gtk_tree_model_iter_children(GTK_TREE_MODEL(playlist_picker_list), + next, + parent); + while(it) { + /* Find the value at row 'next' */ + gtk_tree_model_get(GTK_TREE_MODEL(playlist_picker_list), + next, + 1, &candidate, + -1); + /* See how it compares with @p key */ + int c = strcmp(key, candidate); + g_free(candidate); + if(!c) { + *iter = *next; + return TRUE; /* we found our key */ + } + if(c < 0) { + /* @p key belongs before row 'next' */ + if(create) { + gtk_tree_store_insert_with_values(playlist_picker_list, + iter, + parent, + row, /* insert here */ + 0, title, 1, key, -1); + return TRUE; + } else + return FALSE; + ++row; + } + it = gtk_tree_model_iter_next(GTK_TREE_MODEL(playlist_picker_list), next); + } + /* We have reached the end and not found a row that should be later than @p + * key. */ + if(create) { + gtk_tree_store_insert_with_values(playlist_picker_list, + iter, + parent, + INT_MAX, /* insert at end */ + 0, title, 1, key, -1); + return TRUE; + } else + return FALSE; +} + +/** @brief Delete obsolete rows + * @param parent Parent or NULL + * @param exists List of rows that should exist (by key) + * @param nexists Length of @p exists + */ +static void playlist_picker_delete_obsolete(GtkTreeIter parent[1], + char **exists, + int nexists) { + /* Delete anything that shouldn't exist. */ + GtkTreeIter iter[1]; + gboolean it = gtk_tree_model_iter_children(GTK_TREE_MODEL(playlist_picker_list), + iter, + parent); + while(it) { + /* Find the value at row 'next' */ + gchar *candidate; + gtk_tree_model_get(GTK_TREE_MODEL(playlist_picker_list), + iter, + 1, &candidate, + -1); + gboolean found = FALSE; + for(int n = 0; n < nexists; ++n) + if((found = !strcmp(candidate, exists[n]))) + break; + if(!found) + it = gtk_tree_store_remove(playlist_picker_list, iter); + else + it = gtk_tree_model_iter_next(GTK_TREE_MODEL(playlist_picker_list), + iter); + g_free(candidate); + } +} + +/** @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_store_iter_depth(playlist_picker_list, &iter) > 0) { + gtk_tree_model_get(GTK_TREE_MODEL(playlist_picker_list), &iter, + 1, &gselected, -1); + selected = xstrdup(gselected); + g_free(gselected); + } else + selected = 0; + /* Set button sensitivity according to the new state */ + int deletable = FALSE; + if(selected) { + if(strchr(selected, '.')) { + if(!strncmp(selected, config->username, strlen(config->username))) + deletable = TRUE; + } else + deletable = TRUE; + } + gtk_widget_set_sensitive(playlist_picker_delete_button, deletable); + /* 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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, + NULL, + }, + { + GTK_STOCK_REMOVE, + playlist_picker_delete, + "Delete a playlist", + 0, + NULL, + }, +}; +#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); + g_signal_connect(tree, "button-press-event", + G_CALLBACK(playlist_picker_button), 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_select_activate(GtkMenuItem attribute((unused)) *item, + gpointer attribute((unused)) userdata) { + /* nothing */ +} + +static int playlist_picker_select_sensitive(void *extra) { + GtkTreeIter *iter = extra; + return gtk_tree_store_iter_depth(playlist_picker_list, iter) > 0; +} + +static void playlist_picker_play_activate(GtkMenuItem attribute((unused)) *item, + gpointer attribute((unused)) userdata) { + /* Re-use the menu-based activation callback */ + disorder_eclient_playlist_get(client, playlist_menu_received_content, + playlist_picker_selected, NULL); +} + +static int playlist_picker_play_sensitive(void *extra) { + GtkTreeIter *iter = extra; + return gtk_tree_store_iter_depth(playlist_picker_list, iter) > 0; +} + +static void playlist_picker_remove_activate(GtkMenuItem attribute((unused)) *item, + gpointer attribute((unused)) userdata) { + /* Re-use the 'Remove' button' */ + playlist_picker_delete(NULL, NULL); +} + +static int playlist_picker_remove_sensitive(void *extra) { + GtkTreeIter *iter = extra; + if(gtk_tree_store_iter_depth(playlist_picker_list, iter) > 0) { + if(strchr(playlist_picker_selected, '.')) { + if(!strncmp(playlist_picker_selected, config->username, + strlen(config->username))) + return TRUE; + } else + return TRUE; + } + return FALSE; +} + +/** @brief Pop-up menu for picker */ +static struct menuitem playlist_picker_menuitems[] = { + { + "Select playlist", + NULL, + playlist_picker_select_activate, + playlist_picker_select_sensitive, + 0, + 0 + }, + { + "Play playlist", + GTK_STOCK_MEDIA_PLAY, + playlist_picker_play_activate, + playlist_picker_play_sensitive, + 0, + 0 + }, + { + "Remove playlist", + GTK_STOCK_DELETE, + playlist_picker_remove_activate, + playlist_picker_remove_sensitive, + 0, + 0 + }, +}; + +static gboolean playlist_picker_button(GtkWidget *widget, + GdkEventButton *event, + gpointer attribute((unused)) user_data) { + if(event->type == GDK_BUTTON_PRESS && event->button == 3) { + static GtkWidget *playlist_picker_menu; + + /* Right click press pops up a menu */ + ensure_selected(GTK_TREE_VIEW(widget), event); + /* Find the selected row */ + GtkTreeIter iter[1]; + if(!gtk_tree_selection_get_selected(playlist_picker_selection, 0, iter)) + return TRUE; + popup(&playlist_picker_menu, event, + playlist_picker_menuitems, + sizeof playlist_picker_menuitems / sizeof *playlist_picker_menuitems, + iter); + return TRUE; + } + 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; + +/** @brief Buttons for the playlist window */ +static struct button playlist_editor_buttons[] = { + { + GTK_STOCK_OK, + playlist_editor_ok, + "Close window", + 0, + gtk_box_pack_end, + }, + { + GTK_STOCK_HELP, + playlist_editor_help, + "Go to manual", + 0, + gtk_box_pack_end, + }, +}; + +#define NPLAYLIST_EDITOR_BUTTONS (int)(sizeof playlist_editor_buttons / sizeof *playlist_editor_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); + create_buttons_box(playlist_editor_buttons, + NPLAYLIST_EDITOR_BUTTONS, + hbox); + + GtkWidget *vbox = gtk_vbox_new(FALSE, 0); + GtkWidget *view = init_queuelike(&ql_playlist); + gtk_box_pack_start(GTK_BOX(vbox), view, + TRUE/*expand*/, TRUE/*fill*/, 0); + gtk_box_pack_start(GTK_BOX(vbox), hbox, + FALSE/*expand*/, FALSE/*fill*/, 0); + g_signal_connect(view, "key-press-event", + G_CALLBACK(playlist_editor_keypress), 0); + return vbox; +} + +static gboolean playlist_editor_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_remove_activate(NULL, NULL); + return TRUE; + default: + return FALSE; + } +} + +/** @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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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); +} + +static void playlist_editor_ok(GtkButton attribute((unused)) *button, + gpointer attribute((unused)) userdata) { + gtk_widget_destroy(playlist_window); +} + +static void playlist_editor_help(GtkButton attribute((unused)) *button, + gpointer attribute((unused)) userdata) { + popup_help("playlists.html"); +} + +/* 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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_submsg(playlist_window, GTK_MESSAGE_ERROR, 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; } /** @brief Initialize playlist support */ void playlists_init(void) { /* We re-get all playlists upon any change... */ - event_register("playlist-created", playlists_update, 0); - event_register("playlist-modified", playlists_update, 0); - event_register("playlist-deleted", playlists_update, 0); + event_register("playlist-created", playlist_list_update, 0); + event_register("playlist-deleted", playlist_list_update, 0); /* ...and on reconnection */ - event_register("log-connected", playlists_update, 0); + event_register("log-connected", playlist_list_update, 0); /* ...and from time to time */ - event_register("periodic-slow", playlists_update, 0); + event_register("periodic-slow", playlist_list_update, 0); /* ...and at startup */ - event_register("playlists-updated", menu_playlists_changed, 0); - playlists_update(0, 0, 0); + playlist_list_update(0, 0, 0); + + /* Update the playlists menu when the set of playlists changes */ + event_register("playlists-updated", playlist_menu_changed, 0); + /* Update the new-playlist OK button when the set of playlists changes */ + event_register("playlists-updated", playlist_new_changed, 0); + /* Update the list of playlists in the edit window when the set changes */ + event_register("playlists-updated", playlist_picker_fill, 0); + /* Update the displayed playlist when it is modified */ + event_register("playlist-modified", playlist_editor_fill, 0); + /* Update the shared/public/etc buttons when a playlist is modified */ + event_register("playlist-modified", playlist_editor_set_buttons, 0); } /*