RetroArch/menu/menu_list.c

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/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2015 - Daniel De Matteis
* Copyright (C) 2014-2015 - Jean-André Santoni
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*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
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#include <string.h>
#include <retro_inline.h>
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#include "../driver.h"
#include "menu.h"
#include "menu_common_list.h"
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#include "menu_list.h"
#include "menu_navigation.h"
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menu_list_t *menu_list_get_ptr(void)
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{
menu_handle_t *menu = menu_driver_get_ptr();
if (!menu)
return NULL;
return menu->menu_list;
}
/**
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* menu_list_elem_is_dir:
* @list : File list handle.
* @offset : Offset index of element.
*
* Is the current entry at offset @offset a directory?
*
* Returns: true (1) if entry is a directory, otherwise false (0).
**/
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static INLINE bool menu_list_elem_is_dir(file_list_t *list,
unsigned offset)
{
const char *path = NULL;
const char *label = NULL;
unsigned type = 0;
menu_list_get_at_offset(list, offset, &path, &label, &type);
return type != MENU_FILE_PLAIN;
}
/**
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* menu_list_elem_get_first_char:
* @list : File list handle.
* @offset : Offset index of element.
*
* Gets the first character of an element in the
* file list.
*
* Returns: first character of element in file list.
**/
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static INLINE int menu_list_elem_get_first_char(
file_list_t *list, unsigned offset)
{
int ret;
const char *path = NULL;
menu_list_get_alt_at_offset(list, offset, &path);
ret = tolower(*path);
/* "Normalize" non-alphabetical entries so they
* are lumped together for purposes of jumping. */
if (ret < 'a')
ret = 'a' - 1;
else if (ret > 'z')
ret = 'z' + 1;
return ret;
}
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static void menu_list_build_scroll_indices(file_list_t *list)
{
size_t i;
int current;
bool current_is_dir;
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menu_navigation_t *nav = menu_navigation_get_ptr();
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if (!nav || !list)
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return;
nav->scroll.indices.size = 0;
if (!list->size)
return;
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nav->scroll.indices.list[nav->scroll.indices.size++] = 0;
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current = menu_list_elem_get_first_char(list, 0);
current_is_dir = menu_list_elem_is_dir(list, 0);
for (i = 1; i < list->size; i++)
{
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int first = menu_list_elem_get_first_char(list, i);
bool is_dir = menu_list_elem_is_dir(list, i);
if ((current_is_dir && !is_dir) || (first > current))
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nav->scroll.indices.list[nav->scroll.indices.size++] = i;
current = first;
current_is_dir = is_dir;
}
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nav->scroll.indices.list[nav->scroll.indices.size++] =
list->size - 1;
}
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/**
* Before a refresh, we could have deleted a
* file on disk, causing selection_ptr to
* suddendly be out of range.
*
* Ensure it doesn't overflow.
**/
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void menu_list_refresh(file_list_t *list)
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{
menu_navigation_t *nav = menu_navigation_get_ptr();
menu_list_t *menu_list = menu_list_get_ptr();
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if (!nav || !menu_list || !list)
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return;
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nav->scroll.indices.size = 0;
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menu_list_build_scroll_indices(list);
if (nav->selection_ptr >= menu_list_get_size(menu_list)
&& menu_list_get_size(menu_list))
menu_navigation_set(nav,
menu_list_get_size(menu_list) - 1, true);
else if (!menu_list_get_size(menu_list))
menu_navigation_clear(nav, true);
}
static void menu_list_destroy(file_list_t *list)
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{
unsigned i;
driver_t *driver = driver_get_ptr();
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if (!list)
return;
if (!driver->menu_ctx)
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goto end;
for (i = 0; i < list->size; i++)
{
menu_driver_list_delete(list, i, list->size);
menu_common_list_delete(list, i, list->size);
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}
end:
if (list)
file_list_free(list);
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}
void menu_list_free(menu_list_t *menu_list)
{
if (!menu_list)
return;
menu_list_destroy(menu_list->menu_stack);
menu_list_destroy(menu_list->selection_buf);
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free(menu_list);
}
menu_list_t *menu_list_new(void)
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{
menu_list_t *list = (menu_list_t*)calloc(1, sizeof(*list));
if (!list)
return NULL;
list->menu_stack = (file_list_t*)calloc(1, sizeof(file_list_t));
list->selection_buf = (file_list_t*)calloc(1, sizeof(file_list_t));
if (!list->menu_stack || !list->selection_buf)
{
free(list);
return NULL;
}
return list;
}
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size_t menu_list_get_stack_size(menu_list_t *list)
{
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if (!list)
return 0;
return file_list_get_size(list->menu_stack);
}
void menu_list_get_at_offset(const file_list_t *list, size_t idx,
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const char **path, const char **label, unsigned *file_type)
{
file_list_get_at_offset(list, idx, path, label, file_type);
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}
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size_t menu_list_get_size(menu_list_t *list)
{
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if (!list)
return 0;
return file_list_get_size(list->selection_buf);
}
void menu_list_get_last(const file_list_t *list,
const char **path, const char **label,
unsigned *file_type)
{
if (list)
file_list_get_last(list, path, label, file_type);
}
void menu_list_get_last_stack(const menu_list_t *list,
const char **path, const char **label,
unsigned *file_type)
{
if (list)
file_list_get_last(list->menu_stack, path, label, file_type);
}
menu_file_list_cbs_t *menu_list_get_actiondata_at_offset(const file_list_t *list, size_t idx)
{
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if (!list)
return NULL;
return file_list_get_actiondata_at_offset(list, idx);
}
void *menu_list_get_last_stack_actiondata(const menu_list_t *list)
{
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if (!list)
return NULL;
return file_list_get_last_actiondata(list->menu_stack);
}
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static int menu_list_flush_stack_type(
const char *needle, const char *label,
unsigned type, unsigned final_type)
{
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if (needle)
return strcmp(needle, label);
return type != final_type;
}
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void menu_list_flush_stack(menu_list_t *list,
const char *needle, unsigned final_type)
{
const char *path = NULL;
const char *label = NULL;
unsigned type = 0;
menu_handle_t *menu = menu_driver_get_ptr();
if (!menu || !list)
return;
menu_set_refresh();
file_list_get_last(list->menu_stack, &path, &label, &type);
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while (menu_list_flush_stack_type(needle, label, type, final_type) != 0)
{
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menu_list_pop(list->menu_stack, &menu->navigation.selection_ptr);
file_list_get_last(list->menu_stack, &path, &label, &type);
}
}
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void menu_list_pop_stack(menu_list_t *list)
{
menu_handle_t *menu = menu_driver_get_ptr();
if (!menu || !list)
return;
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if (file_list_get_size(list->menu_stack) <= 1)
return;
menu_driver_list_cache(false, 0);
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menu_list_pop(list->menu_stack, &menu->navigation.selection_ptr);
menu_set_refresh();
}
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void menu_list_pop_stack_by_needle(menu_list_t *list,
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const char *needle)
{
const char *path = NULL;
const char *label = NULL;
unsigned type = 0;
menu_handle_t *menu = menu_driver_get_ptr();
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if (!menu || !list)
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return;
menu_set_refresh();
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file_list_get_last(list->menu_stack, &path, &label, &type);
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while (strcmp(needle, label) == 0)
{
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menu_list_pop(list->menu_stack, &menu->navigation.selection_ptr);
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file_list_get_last(list->menu_stack, &path, &label, &type);
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}
}
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void menu_list_pop(file_list_t *list, size_t *directory_ptr)
{
driver_t *driver = driver_get_ptr();
if (!driver->menu_ctx)
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goto end;
if (list->size != 0)
{
size_t list_size = list->size - 1;
menu_driver_list_delete(list, list_size, list_size);
menu_common_list_delete(list, list_size, list_size);
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}
end:
file_list_pop(list, directory_ptr);
if (!driver->menu_ctx)
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return;
menu_driver_list_set_selection(list);
menu_common_list_set_selection(list);
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}
void menu_list_clear(file_list_t *list)
{
driver_t *driver = driver_get_ptr();
if (!driver->menu_ctx)
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goto end;
menu_driver_list_clear(list);
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end:
menu_common_list_clear(list);
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}
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void menu_list_push(file_list_t *list,
const char *path, const char *label,
unsigned type, size_t directory_ptr)
{
if (!list || !label)
return;
file_list_push(list, path, label, type, directory_ptr);
menu_driver_list_insert(list, path, label, list->size - 1);
menu_common_list_insert(list, path, label, type, list->size - 1);
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}
void menu_list_set_alt_at_offset(file_list_t *list, size_t idx,
const char *alt)
{
file_list_set_alt_at_offset(list, idx, alt);
}
void menu_list_get_alt_at_offset(const file_list_t *list, size_t idx,
const char **alt)
{
file_list_get_alt_at_offset(list, idx, alt);
}