+#include <stdlib.h>
#include <stddef.h>
+#include <string.h>
+#include <ncurses.h>
#include "headers/menu.h"
+#include "headers/render.h"
+#include "headers/utils.h"
typedef struct MenuItem {
char* contents;
} MenuItem;
typedef struct Menu {
- MenuItem* menu_items;
+ MenuItem** menu_items;
int menu_length;
int selected_item;
+ WINDOW* menu_win;
+ int max_height;
+ int max_width;
} Menu;
+int swap_item(Menu* menu, int src_index, int dest_index);
+int delete_item(Menu* menu, int index);
+
+MenuItem*
+create_menuitem(char* contents)
+{
+ MenuItem* new_menuitem;
+
+ new_menuitem = malloc(sizeof(MenuItem));
+ new_menuitem->contents = contents;
+
+ return new_menuitem;
+}
Menu*
-create_menu(MenuItem* item_list)
+create_menu(MenuItem** item_list)
{
- return NULL;
+ Menu* new_menu;
+
+ new_menu = malloc(sizeof(Menu));
+ new_menu->menu_items = item_list;
+ new_menu->menu_length = array_length(MenuItem*, item_list);
+ new_menu->selected_item = 0;
+ set_menu_win(new_menu, stdscr);
+
+ return new_menu;
}
int
-set_menu_items(Menu* menu, MenuItem* item_list)
+set_menu_win(Menu* menu, WINDOW* win)
{
+ menu->menu_win = win;
+ getmaxyx(menu->menu_win, menu->max_height, menu->max_width);
+
return 0;
}
{
return NULL;
}
+
+int
+swap_item(Menu* menu, int src_index, int dest_index)
+{
+ MenuItem* temp;
+
+ temp = menu->menu_items[dest_index];
+ menu->menu_items[dest_index] = menu->menu_items[src_index];
+ menu->menu_items[src_index] = temp;
+
+ return 0;
+}
+
+int
+delete_item(Menu* menu, int index)
+{
+ if (index < 0 || index > menu->menu_length-1) return -1;
+
+ int temp_size = (menu->menu_length-index-1)*sizeof(MenuItem*);
+ MenuItem* temp[temp_size];
+
+ /* might break if last item? */
+ memcpy(temp, menu->menu_items[index+1], temp_size);
+ memcpy(menu->menu_items[index], temp, temp_size);
+
+ menu->menu_items = realloc(menu->menu_items, menu->menu_length*sizeof(MenuItem*));
+ menu->menu_items[menu->menu_length-1] = 0; // preserve null at end
+
+ menu->menu_length -= 1;
+
+ /* also move the current selected position if it's last */
+ if (menu->selected_item > menu->menu_length-1) {
+ menu->selected_item = menu->menu_length-1;
+ }
+
+ return 0;
+}
+
+int
+menu_driver(Menu* menu, MenuAction action)
+{
+
+ switch (action) {
+ case MENU_UP:
+ menu->selected_item = menu->selected_item-1 >= 0 ? menu->selected_item-1 : 0;
+ break;
+
+ case MENU_DOWN:
+ menu->selected_item = menu->selected_item+1 <= menu->menu_length-1 ? menu->selected_item+1 : menu->menu_length-1;
+ break;
+
+ case MENU_TOP:
+ menu->selected_item = 0;
+ break;
+
+ case MENU_BOTTOM:
+ menu->selected_item = menu->menu_length-1;
+ break;
+
+ case MENU_MOVE_UP:
+ if (menu->selected_item <= 0) break;
+ swap_item(menu, menu->selected_item, menu->selected_item-1);
+ menu->selected_item -= 1;
+ break;
+
+ case MENU_MOVE_DOWN:
+ if (menu->selected_item >= menu->menu_length-1) break;
+ swap_item(menu, menu->selected_item, menu->selected_item+1);
+ menu->selected_item += 1;
+ break;
+
+ case MENU_DELETE:
+ delete_item(menu, menu->selected_item);
+ wclear(menu->menu_win);
+ break;
+
+ default: // This is here for debug, disable later
+ fprintf(stderr, "Invalid menu action");
+ }
+
+ return 0;
+}
+
+int
+render_menu(Menu* menu)
+{
+ int cur_line;
+
+ cur_line = 0;
+
+ for (int i = 0; i < menu->menu_length; i++) {
+
+ int wrapped_lines;
+ char* wrapped_text;
+ int text_color;
+
+ /* wrap text by inserting newlines */
+ wrapped_text = wrap_text(menu->menu_items[i]->contents, menu->max_width, &wrapped_lines);
+
+ /* color selected item */
+ text_color = (i == menu->selected_item) ? TS_SELECTED : TS_NONSELECTED;
+
+ wattron(menu->menu_win, COLOR_PAIR(text_color));
+ mvwprintw(menu->menu_win, cur_line, 0, wrapped_text);
+ wattroff(menu->menu_win, COLOR_PAIR(text_color));
+
+ cur_line += wrapped_lines;
+
+ free(wrapped_text);
+
+ }
+
+ return 0;
+}
+
+int
+free_menu(Menu* menu)
+{
+ return 0;
+}
+