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/*
 * Copyright (C) 2021  P. J. McDermott
 *
 * This file is part of Maze Fight
 *
 * Maze Fight is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Maze Fight is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Maze Fight.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <SDL.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "../tk.h"
#include "widget.h"

struct mftk_radio {
	struct mftk_widget   parent;
	struct mftk_widget  *grid;
	int                  state;
	int                (*action)(void *, int);
	void                *user_data;
};

static void
_mftk_radio_layout(struct mftk_widget *w)
{
	struct mftk_radio *r = (struct mftk_radio *) w;

	mftk_widget_layout(r->grid);
	w->w = r->grid->w;
	w->h = r->grid->h;
}

static int
_mftk_radio_event(struct mftk_widget *w, SDL_Event *e, int x, int y)
{
	struct mftk_radio *r = (struct mftk_radio *) w;

	return mftk_widget_event(r->grid, e, x, y);
}

static int
_mftk_radio_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
{
	struct mftk_radio *r = (struct mftk_radio *) w;

	return mftk_widget_render(r->grid, renderer, x, y);
}

static void
_mftk_radio_destroy(struct mftk_widget *w)
{
	struct mftk_radio *r = (struct mftk_radio *) w;

	mftk_widget_destroy(&r->grid);
}

struct mftk_widget *
mftk_radio_new(int butn_width, int butn_padding, SDL_Color *butn_color,
		SDL_Color *mark_color, int label_padding, int item_padding,
		TTF_Font *font, SDL_Color *text_color,
		int (*action)(void *, int), void *user_data,
		SDL_Renderer *renderer, int state, int options, ...)
{
	struct mftk_widget **children;
	va_list              ap;
	int                  i;
	struct mftk_widget  *w;
	struct mftk_radio   *r;

	children = calloc(options, sizeof(*children));
	if (children == NULL) {
		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
				"Couldn't create widget: %s",
				strerror(errno));
		return NULL;
	}

	va_start(ap, options);
	for (i = 0; i < options; ++i) {
		children[i] = mftk_check_new(butn_width, butn_padding,
				butn_color, mark_color, (i == state),
				label_padding, font, va_arg(ap, const char *),
				text_color, NULL/*TODO*/, NULL/*TODO*/,
				renderer);
		if (children[i] == NULL) {
			for (; i >= 0; --i) {
				mftk_widget_destroy(&children[i]);
			}
			free(children);
			va_end(ap);
			return NULL;
		}
		mftk_check_set_shape(children[i], MFTK_CHECK_SHAPE_CIR);
	}
	va_end(ap);

	mftk_widget_init(w, r, radio);

	r->grid = mftk_grid_new_a(options, 1, item_padding, 0, children);
	if (r->grid == NULL) {
		for (i = 0; i < options; ++i) {
			mftk_widget_destroy(&children[i]);
		}
		free(children);
		free(r);
	}

	r->state     = state;
	r->action    = action;
	r->user_data = user_data;

	return w;
}