Implement modified signal for playlist and hook it into nav and playlist page.

Fixes #4.

src/koto-nav.c

@@ -224,10 +224,40 @@ void koto_nav_handle_playlist_added(KotoCartographer *carto, KotoPlaylist *playl
 
 			koto_button_add_click_handler(playlist_button, KOTO_BUTTON_CLICK_TYPE_PRIMARY, G_CALLBACK(koto_nav_handle_playlist_button_click), playlist_uuid);
 			koto_window_handle_playlist_added(koto_maps, playlist, main_window); // TODO: MOVE THIS
+			g_signal_connect(playlist, "modified", G_CALLBACK(koto_nav_handle_playlist_modified), self);
 		}
 	}
 }
 
+void koto_nav_handle_playlist_modified(KotoPlaylist *playlist, gpointer user_data) {
+	if (!KOTO_IS_PLAYLIST(playlist)) {
+		return;
+	}
+
+	KotoNav *self = user_data;
+	if (!KOTO_IS_NAV(self)) {
+		return;
+	}
+
+	gchar *playlist_uuid = koto_playlist_get_uuid(playlist); // Get the UUID for a playlist
+
+	KotoButton *playlist_button = g_hash_table_lookup(self->playlist_buttons, playlist_uuid);
+
+	if (!KOTO_IS_BUTTON(playlist_button)) {
+		return;
+	}
+
+	gchar *artwork = koto_playlist_get_artwork(playlist); // Get the artwork
+	if (koto_utils_is_string_valid(artwork)) { // Have valid artwork
+		koto_button_set_file_path(playlist_button, artwork); // Update the artwork path
+	}
+
+	gchar *name = koto_playlist_get_name(playlist); // Get the name
+	if (koto_utils_is_string_valid(name)) { // Have valid name
+		koto_button_set_text(playlist_button, name); // Update the button text
+	}
+}
+
 void koto_nav_handle_playlist_removed(KotoCartographer *carto, gchar *playlist_uuid, gpointer user_data) {
 	(void) carto;
 	KotoNav *self = user_data;

src/koto-nav.h

@@ -33,6 +33,7 @@ void koto_nav_create_playlist_section(KotoNav *self);
 void koto_nav_create_podcasts_section(KotoNav *self);
 void koto_nav_handle_playlist_add_click(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);
 void koto_nav_handle_playlist_added(KotoCartographer *carto, KotoPlaylist *playlist, gpointer user_data);
+void koto_nav_handle_playlist_modified(KotoPlaylist *playlist, gpointer user_data);
 void koto_nav_handle_playlist_removed(KotoCartographer *carto, gchar *playlist_uuid, gpointer user_data);
 void koto_nav_handle_local_music_click(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);
 

src/pages/playlist/list.c

@@ -310,6 +310,27 @@ void koto_playlist_page_handle_edit_button_clicked(GtkGestureClick *gesture, int
 	koto_window_show_dialog(main_window, "create-modify-playlist");
 }
 
+void koto_playlist_page_handle_playlist_modified(KotoPlaylist *playlist, gpointer user_data) {
+	if (!KOTO_IS_PLAYLIST(playlist)) {
+		return;
+	}
+
+	KotoPlaylistPage *self = user_data;
+	if (!KOTO_IS_PLAYLIST_PAGE(self)) {
+		return;
+	}
+
+	gchar *artwork = koto_playlist_get_artwork(playlist); // Get the artwork
+	if (koto_utils_is_string_valid(artwork)) { // Have valid artwork
+		koto_cover_art_button_set_art_path(self->playlist_image, artwork); // Update our Koto Cover Art Button
+	}
+
+	gchar *name = koto_playlist_get_name(playlist); // Get the name
+	if (koto_utils_is_string_valid(name)) { // Have valid name
+		gtk_label_set_label(GTK_LABEL(self->name_label), name); // Update the name label
+	}
+}
+
 void koto_playlist_page_handle_track_album_clicked(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data) {
 	(void) gesture; (void) n_press; (void) x; (void) y;
 	KotoPlaylistPage *self  = user_data;
@@ -411,6 +432,8 @@ void koto_playlist_page_set_playlist_uuid(KotoPlaylistPage *self, gchar *playlis
 	self->playlist = playlist;
 	koto_playlist_page_set_playlist_model(self, KOTO_PREFERRED_MODEL_TYPE_DEFAULT); // TODO: Enable this to be changed
 	koto_playlist_page_update_header(self); // Update our header
+
+	g_signal_connect(playlist, "modified", G_CALLBACK(koto_playlist_page_handle_playlist_modified), self); // Handle playlist modification
 }
 
 void koto_playlist_page_set_playlist_model(KotoPlaylistPage *self, KotoPreferredModelType model) {

src/pages/playlist/list.h

@@ -38,6 +38,7 @@ GtkWidget* koto_playlist_page_get_main(KotoPlaylistPage *self);
 void koto_playlist_page_handle_action_bar_closed(KotoActionBar *bar, gpointer data);
 void koto_playlist_page_handle_cover_art_clicked(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);
 void koto_playlist_page_handle_edit_button_clicked(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);
+void koto_playlist_page_handle_playlist_modified(KotoPlaylist *playlist, gpointer user_data);
 void koto_playlist_page_handle_track_album_clicked(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);
 void koto_playlist_page_handle_track_artist_clicked(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);
 void koto_playlist_page_handle_track_name_clicked(GtkGestureClick *gesture, int n_press, double x, double y, gpointer user_data);

src/playlist/playlist.c

@@ -37,6 +37,7 @@ enum {
 };
 
 enum {
+	SIGNAL_MODIFIED,
 	SIGNAL_TRACK_ADDED,
 	SIGNAL_TRACK_LOAD_FINALIZED,
 	SIGNAL_TRACK_REMOVED,
@@ -67,6 +68,7 @@ struct _KotoPlaylist {
 struct _KotoPlaylistClass {
 	GObjectClass parent_class;
 
+	void (* modified) (KotoPlaylist *playlist);
 	void (* track_added) (KotoPlaylist *playlist, gchar *track_uuid);
 	void (* track_load_finalized) (KotoPlaylist *playlist);
 	void (* track_removed) (KotoPlaylist *playlist, gchar *track_uuid);
@@ -128,6 +130,18 @@ static void koto_playlist_class_init(KotoPlaylistClass *c) {
 
 	g_object_class_install_properties(gobject_class, N_PROPERTIES, props);
 
+	playlist_signals[SIGNAL_MODIFIED] = g_signal_new(
+		"modified",
+		G_TYPE_FROM_CLASS(gobject_class),
+		G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
+		G_STRUCT_OFFSET(KotoPlaylistClass, modified),
+		NULL,
+		NULL,
+		NULL,
+		G_TYPE_NONE,
+		0
+	);
+
 	playlist_signals[SIGNAL_TRACK_ADDED] = g_signal_new(
 		"track-added",
 		G_TYPE_FROM_CLASS(gobject_class),
@@ -714,6 +728,14 @@ void koto_playlist_set_artwork(KotoPlaylist *self, const gchar *path) {
 
 	self->art_path = g_strdup(path); // Update our art path to a duplicate of provided path
 
+	if (self->finalized) { // Has already been loaded
+		g_signal_emit(
+			self,
+			playlist_signals[SIGNAL_MODIFIED],
+			0
+		);
+	}
+
 free_cookie:
 		magic_close(cookie); // Close and free the cookie to the cookie monster
 }
@@ -728,6 +750,14 @@ void koto_playlist_set_name(KotoPlaylist *self, const gchar *name) {
 	}
 
 	self->name = g_strdup(name);
+
+	if (self->finalized) { // Has already been loaded
+		g_signal_emit(
+			self,
+			playlist_signals[SIGNAL_MODIFIED],
+			0
+		);
+	}
 }
 
 void koto_playlist_set_position(KotoPlaylist *self, gint position) {