unleashed-firmware/applications/gui/modules/button_menu.h

#pragma once
#include <stdint.h>
#include <gui/view.h>

#ifdef __cplusplus
extern "C" {
#endif

/* ButtonMenu anonymous structure */
typedef struct ButtonMenu ButtonMenu;
typedef struct ButtonMenuItem ButtonMenuItem;

/* Callback for any button menu actions */
typedef void (*ButtonMenuItemCallback)(void* context, int32_t index, InputType type);

/* Type of button. Difference in drawing buttons. */
typedef enum {
    ButtonMenuItemTypeCommon,
    ButtonMenuItemTypeControl,
} ButtonMenuItemType;

/**
 * @brief Get button menu view
 * @param button_menu - ButtonMenu instance
 * @return View instance that can be used for embedding
 */
View* button_menu_get_view(ButtonMenu* button_menu);

/**
 * @brief Clean button menu
 * @param button_menu - ButtonMenu instance
 */
void button_menu_clean(ButtonMenu* button_menu);

/**
 * @brief Add item to button menu instance
 * @param button_menu   - ButtonMenu instance
 * @param label         - text inside new button
 * @param index         - value to distinct between buttons inside ButtonMenuItemCallback
 * @param type          - type of button to create. Differ by button drawing.
 *                      Control buttons have no frames, and have more squared borders.
 * @return              pointer to just-created item
 */
ButtonMenuItem* button_menu_add_item(
    ButtonMenu* button_menu,
    const char* label,
    int32_t index,
    ButtonMenuItemCallback callback,
    ButtonMenuItemType type,
    void* callback_context);

/**
 * @brief Allocate and initialize new instance of ButtonMenu model
 * @return          just-created ButtonMenu model
 */
ButtonMenu* button_menu_alloc(void);

/**
 * @brief Free ButtonMenu element
 * @param button_menu - ButtonMenu instance
 */
void button_menu_free(ButtonMenu* button_menu);

/**
 * @brief Set ButtonMenu header on top of canvas
 * @param button_menu   - ButtonMenu instance
 * @param header        - header on the top of button menu
 */
void button_menu_set_header(ButtonMenu* button_menu, const char* header);

/**
 * @brief Set selected item
 * @param button_menu   - ButtonMenu instance
 * @param index         - index of ButtonMenu to be selected
 */
void button_menu_set_selected_item(ButtonMenu* button_menu, uint32_t index);

#ifdef __cplusplus
}
#endif