/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
   Copyright (C) 2000 CodeFactory AB
   Copyright (C) 2000 Jonas Borgstr\366m <jonas@codefactory.se>
   Copyright (C) 2000 Anders Carlsson <andersca@codefactory.se>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#include <string.h>

#include "htmlstyle.h"

void
html_style_box_ref (HtmlStyleBox *box)
{
	box->refcount++;
}

void
html_style_box_unref (HtmlStyleBox *box)
{
	if (!box)
		return;
	
	box->refcount--;

	if (box->refcount <= 0) {
		g_free (box);
	}
}

void
html_style_set_style_box (HtmlStyle *style, HtmlStyleBox *box)
{
	if (style->box == box)
		return;

	if (style->box)
		html_style_box_unref (style->box);

	if (box) {
		style->box = box;
		html_style_box_ref (style->box);
	}
}

HtmlStyleBox *
html_style_box_new (void)
{
	HtmlStyleBox *result = g_new0 (HtmlStyleBox, 1);
#if 0
	result->refcount = 1;
#endif	
	return result;
}


HtmlStyleBox *
html_style_box_dup (HtmlStyleBox *box)
{
	HtmlStyleBox *result = html_style_box_new ();

	if (box)
		memcpy (result, box, sizeof (HtmlStyleBox));

	result->refcount = 0;

	return result;
}

void
html_style_set_width (HtmlStyle *style, const HtmlLength *width)
{
	if (!html_length_equals (&style->box->width, width)) {
		if (style->box->refcount > 1)
			html_style_set_style_box (style, html_style_box_dup (style->box));
		html_length_set (&style->box->width, width);
	}
}

void
html_style_set_height (HtmlStyle *style, const HtmlLength *height)
{
	if (!html_length_equals (&style->box->height, height)) {
		if (style->box->refcount > 1)
			html_style_set_style_box (style, html_style_box_dup (style->box));
		html_length_set (&style->box->height, height);
	}
}

void
html_style_set_min_width (HtmlStyle *style, const HtmlLength *min_width)
{
	if (!html_length_equals (&style->box->min_width, min_width)) {
		if (style->box->refcount > 1)
			html_style_set_style_box (style, html_style_box_dup (style->box));
		html_length_set (&style->box->min_width, min_width);
	}
}

void
html_style_set_max_width (HtmlStyle *style, const HtmlLength *max_width)
{
	if (!html_length_equals (&style->box->max_width, max_width)) {
		if (style->box->refcount > 1)
			html_style_set_style_box (style, html_style_box_dup (style->box));
		html_length_set (&style->box->max_width, max_width);
	}
}


void
html_style_set_min_height (HtmlStyle *style, const HtmlLength *min_height)
{
	if (!html_length_equals (&style->box->min_height, min_height)) {
		if (style->box->refcount > 1)
			html_style_set_style_box (style, html_style_box_dup (style->box));
		html_length_set (&style->box->min_height, min_height);
	}
}


void
html_style_set_max_height (HtmlStyle *style, const HtmlLength *max_height)
{
	if (!html_length_equals (&style->box->max_height, max_height)) {
		if (style->box->refcount > 1)
			html_style_set_style_box (style, html_style_box_dup (style->box));
		html_length_set (&style->box->max_height, max_height);
	}
}