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#include <string.h>
#include <stdlib.h>
#include "uimenu.internal.h"
#include "../macros.h"
void uimenu_item_button_init(struct uimenu_item_button *button, unsigned id, const char *text, uimenu_button_action *action)
{
button->header.type = UMPS__MENU_TYPE_BUTTON;
button->header.next = button->header.prev = NULL;
button->id = id;
button->text = text ? strdup(text) : NULL;
button->enabled = true;
button->action = action;
}
void uimenu_item_menu_init(struct uimenu_item_menu *menu, const char *text)
{
menu->header.type = UMPS__MENU_TYPE_MENU;
menu->header.next = menu->header.prev = NULL;
menu->text = text ? strdup(text) : NULL;
menu->head = menu->tail = NULL;
menu->nchildren = 0;
}
struct uimenu_item_header *uimenu__item_menu_spacer_create(void)
{
struct uimenu_item_header *spacer = malloc(sizeof(struct uimenu_item_header));
spacer->type = UMPS__MENU_TYPE_SPACER;
spacer->next = spacer->prev = NULL;
return spacer;
}
/* menu items will be freed on removal */
void uimenu_menu_add_spacer(struct uimenu_item_menu *menu, struct uimenu_item_header *where, bool after)
{
struct uimenu_item_header *spc = uimenu__item_menu_spacer_create();
uimenu_menu_add(menu, where, spc, after);
}
void uimenu_menu_add(struct uimenu_item_menu *menu, struct uimenu_item_header *where, struct uimenu_item_header *item, bool after)
{
if (!menu->head) {
/* edge case: menu has no children :((((( */
menu->head = menu->tail = item;
item->next = item->prev = NULL;
++menu->nchildren;
return;
}
umps_assert(where);
if (after) {
item->prev = where;
item->next = where->next;
where->next = item;
if (!item->next) menu->tail = item;
} else {
item->next = where;
item->prev = where->prev;
where->prev = item;
if (!item->prev) menu->head = item;
}
++menu->nchildren;
}
void uimenu__item_free(struct uimenu_item_header *item)
{
switch (item->type) {
case UMPS__MENU_TYPE_SPACER:
free(item);
break;
case UMPS__MENU_TYPE_BUTTON: {
struct uimenu_item_button *btn = (struct uimenu_item_button *)item;
free(btn->text);
free(btn);
break;
}
case UMPS__MENU_TYPE_MENU:
uimenu_menu_free((struct uimenu_item_menu *)item);
break;
default:
umps_trap;
}
}
void uimenu_menu_remove(struct uimenu_item_menu *menu, struct uimenu_item_header *item)
{
if (item->prev) {
item->prev->next = item->next;
} else {
menu->head = item->next;
}
if (item->next) {
item->next->prev = item->prev;
} else {
menu->tail = item->prev;
}
--menu->nchildren;
}
/* frees children */
void uimenu_menu_free(struct uimenu_item_menu *menu)
{
for (struct uimenu_item_header *cur = menu->head, *next; cur; cur = next) {
next = cur->next;
uimenu__item_free(cur);
}
free(menu->text);
free(menu);
}
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