language_menu.c

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#include "language_menu.h"
 
#include "../common.h"
#include "../io/input/input_handler.h"
#include "../io/output/common/output_handler.h"
#include "../local/local_handler.h"
#include "local/language_menu_local.h"
 
int init_language_menu() {
    language_menu_strings = (char**) malloc(sizeof(char*) * MAX_LANGUAGE_MENU_STRINGS);
    RETURN_WHEN_NULL(language_menu_strings, 1, "Language Menu", "Failed to allocate memory for language menu strings.");
 
    for (int i = 0; i < MAX_LANGUAGE_MENU_STRINGS; i++) {
        language_menu_strings[i] = NULL;
    }
 
    // update local once, so the strings are initialized
    update_language_menu_local();
    // add update local function to the observer list
    observe_local(update_language_menu_local);
    return 0;
}
 
 
menu_result_t show_language_menu() {
    const char* menu_options[2];
 
    menu_options[0] = language_menu_strings[LANGUAGE_ENGLISH];
    menu_options[1] = language_menu_strings[LANGUAGE_GERMAN];
 
    menu_result_t res = MENU_CHANGE_LANGUAGE;
 
    int selected_index = 0;
    bool selection_active = true;
    while (selection_active) {
        const int menu_count = 2;
        draw_menu(menu_options, menu_count, selected_index);
 
        input_event_t input_event;
        if (!get_input_blocking(&input_event)) {
            continue;
        }
 
        // Use our logical input types
        switch (input_event.type) {
            case INPUT_UP:
                selected_index = (selected_index - 1 + menu_count) % menu_count;
                break;
            case INPUT_DOWN:
                selected_index = (selected_index + 1) % menu_count;
                break;
            case INPUT_CONFIRM: {
                if (selected_index == 0) {
                    // English selected
                    set_language(LANGE_EN);
                } else if (selected_index == 1) {
                    // German selected
                    set_language(LANGE_DE);
                }
                selection_active = false;
                break;
            }
            case INPUT_QUIT:
                res = MENU_EXIT;
                selection_active = false;
                break;
            case INPUT_CANCEL:
                res = MENU_CONTINUE;
                selection_active = false;
                break;
            default:
                // do nothing for other keys
                break;
        }
    }
 
    return res;
}
 
void shutdown_language_menu() {
    if (language_menu_strings != NULL) {
        for (int i = 0; i < MAX_LANGUAGE_MENU_STRINGS; i++) {
            if (language_menu_strings[i] != NULL) {
                free(language_menu_strings[i]);
            }
        }
        free(language_menu_strings);
    }
}