gui/playlist: Add support for deleting playlists

System playlists cannot be deleted, but library playlists can.  Deleting
a library playlist removes the library and associated tracks from the database.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

gui/playlist.c

@@ -112,6 +112,35 @@ gboolean __playlist_on_select(GtkTreeSelection *selection, GtkTreeModel *model,
 	return queue != NULL;
 }
 
+bool __playlist_keypress(GtkTreeView *treeview, GdkEventKey *event,
+			   gpointer data)
+{
+	GtkTreeSelection *selection = gtk_tree_view_get_selection(treeview);
+	GtkTreeModel *model = GTK_TREE_MODEL(p_store);
+	gchar *name = NULL;
+	GtkTreePath *path;
+	GtkTreeIter iter;
+	GList *rows;
+
+	if (event->keyval != GDK_KEY_Delete)
+		return false;
+
+	rows = gtk_tree_selection_get_selected_rows(selection, &model);
+	path = rows->data;
+
+	if (gtk_tree_model_get_iter(model, &iter, path))
+		name = __playlist_name(&iter);
+	if (!name)
+		goto out;
+
+	if (playlist_delete(__playlist_type(&iter), name))
+		gtk_tree_store_remove(GTK_TREE_STORE(model), &iter);
+	g_free(name);
+out:
+	g_list_free_full(rows, (GDestroyNotify)gtk_tree_path_free);
+	return true;
+}
+
 static bool __playlist_queue_set_size(struct queue *queue, GtkTreeIter *iter)
 {
 	struct gui_queue *gq = gui_queue(queue);

include/tests/gui.h

@@ -31,6 +31,7 @@ void __collection_toggled() {}
 #endif /* TEST_NEED_COLLECTION */
 
 #ifdef TEST_NEED_PLAYLIST
+void __playlist_keypress() {}
 void __playlist_selection_changed() {}
 #endif /* TEST_NEED_PLAYLIST */
 

share/ocarina/ocarina6.glade

@@ -954,6 +954,7 @@
                                 <property name="headers_visible">False</property>
                                 <property name="search_column">1</property>
                                 <property name="enable_tree_lines">True</property>
+                                <signal name="key-press-event" handler="__playlist_keypress" swapped="no"/>
                                 <child internal-child="selection">
                                   <object class="GtkTreeSelection" id="treeview-selection3">
                                     <signal name="changed" handler="__playlist_selection_changed" swapped="no"/>