#ifndef BLINKY_UI_PAGE_H_
#define BLINKY_UI_PAGE_H_

#include <stdbool.h>

#ifdef __cplusplus
extern "C" {
#endif

struct ui_page;

struct ui_page_ops {
	void (*init)(struct ui_page *page);
	void (*deinit)(struct ui_page *page);
	void (*refresh)(struct ui_page *page);
};

struct ui_page {
	const struct ui_page_ops *ops;
	struct ui_page *parent;
	bool initialized;
};

static inline void ui_page_init(struct ui_page *page)
{
	if ((page == NULL) || (page->ops == NULL)) {
		return;
	}

	if (page->initialized) {
		return;
	}

	if (page->ops->init != NULL) {
		page->ops->init(page);
	}
	page->initialized = true;
}

static inline void ui_page_deinit(struct ui_page *page)
{
	if ((page == NULL) || !page->initialized || (page->ops == NULL)) {
		return;
	}

	if (page->ops->deinit != NULL) {
		page->ops->deinit(page);
	}
	page->initialized = false;
}

static inline void ui_page_refresh(struct ui_page *page)
{
	if ((page == NULL) || !page->initialized ||
	    (page->ops == NULL) || (page->ops->refresh == NULL)) {
		return;
	}

	page->ops->refresh(page);
}

#ifdef __cplusplus
}
#endif

#endif /* BLINKY_UI_PAGE_H_ */