/* gui_util.c - GUI utility functions. */ /* * GRUB -- GRand Unified Bootloader * Copyright (C) 2008 Free Software Foundation, Inc. * * GRUB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * GRUB is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GRUB. If not, see <http://www.gnu.org/licenses/>. */ #include <grub/mm.h> #include <grub/misc.h> #include <grub/gui.h> #include <grub/gui_string_util.h> struct find_by_id_state { const char *match_id; grub_gui_component_callback match_callback; void *match_userdata; }; static void find_by_id_recursively (grub_gui_component_t component, void *userdata) { struct find_by_id_state *state; const char *id; state = (struct find_by_id_state *) userdata; id = component->ops->get_id (component); if (id && grub_strcmp (id, state->match_id) == 0) state->match_callback (component, state->match_userdata); if (component->ops->is_instance (component, "container")) { grub_gui_container_t container; container = (grub_gui_container_t) component; container->ops->iterate_children (container, find_by_id_recursively, state); } } void grub_gui_find_by_id (grub_gui_component_t root, const char *id, grub_gui_component_callback cb, void *userdata) { struct find_by_id_state state; state.match_id = id; state.match_callback = cb; state.match_userdata = userdata; find_by_id_recursively (root, &state); } struct iterate_recursively_state { grub_gui_component_callback callback; void *userdata; }; static void iterate_recursively_cb (grub_gui_component_t component, void *userdata) { struct iterate_recursively_state *state; state = (struct iterate_recursively_state *) userdata; state->callback (component, state->userdata); if (component->ops->is_instance (component, "container")) { grub_gui_container_t container; container = (grub_gui_container_t) component; container->ops->iterate_children (container, iterate_recursively_cb, state); } } void grub_gui_iterate_recursively (grub_gui_component_t root, grub_gui_component_callback cb, void *userdata) { struct iterate_recursively_state state; state.callback = cb; state.userdata = userdata; iterate_recursively_cb (root, &state); }