/**
 * Navit, a modular navigation system.
 * Copyright (C) 2005-2008 Navit Team
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program 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 this program; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#include <glib.h>
#include <string.h>
#include "debug.h"
#include "callback.h"
#include "gui.h"
#include "menu.h"
#include "data_window.h"
#include "item.h"
#include "plugin.h"

struct gui
{
	struct gui_methods meth;
	struct gui_priv *priv;
	struct attr **attrs;
	struct attr parent;
};

struct gui *
gui_new(struct attr *parent, struct attr **attrs)
{
	struct gui *this_;
	struct attr *type_attr;
	struct gui_priv *(*guitype_new)(struct navit *nav,
			struct gui_methods *meth, struct attr **attrs, struct gui *gui);
	struct attr cbl;
	if (!(type_attr = attr_search(attrs, NULL, attr_type)))
	{
		return NULL;
	}

	guitype_new = plugin_get_gui_type(type_attr->u.str);
	if (!guitype_new)
		return NULL;

	this_=g_new0(struct gui, 1);
	this_->attrs = attr_list_dup(attrs);
	cbl.type = attr_callback_list;
	cbl.u.callback_list = callback_list_new();
	this_->attrs = attr_generic_add_attr(this_->attrs, &cbl);
	this_->priv = guitype_new(parent->u.navit, &this_->meth, this_->attrs,
			this_);
	this_->parent = *parent;
	return this_;
}

int gui_get_attr(struct gui *this_, enum attr_type type, struct attr *attr,
		struct attr_iter *iter)
{
	int ret;
	if (this_->meth.get_attr)
	{
		ret = this_->meth.get_attr(this_->priv, type, attr);
		if (ret)
			return ret;
	}
	if (type == this_->parent.type)
	{
		*attr = this_->parent;
		return 1;
	}
	return attr_generic_get_attr(this_->attrs, NULL, type, attr, iter);
}

int gui_set_attr(struct gui *this_, struct attr *attr)
{
	int ret = 1;
	if (this_->meth.set_attr)
		ret = this_->meth.set_attr(this_->priv, attr);
	if (ret == 1)
		this_->attrs = attr_generic_set_attr(this_->attrs, attr);
	return ret != 0;
}

int gui_add_attr(struct gui *this_, struct attr *attr)
{
	int ret = 0;
	if (this_->meth.add_attr)
		ret = this_->meth.add_attr(this_->priv, attr);
	return ret;
}

struct menu *
gui_menubar_new(struct gui *gui)
{
	struct menu *this_;
	if (!gui->meth.menubar_new)
		return NULL; this_=g_new0(struct menu, 1);
	this_->priv = gui->meth.menubar_new(gui->priv, &this_->meth);
	if (!this_->priv)
	{
		g_free(this_);
		return NULL;
	}
	return this_;
}

struct menu *
gui_popup_new(struct gui *gui)
{
	struct menu *this_;
	if (!gui->meth.popup_new)
		return NULL; this_=g_new0(struct menu, 1);
	this_->priv = gui->meth.popup_new(gui->priv, &this_->meth);
	if (!this_->priv)
	{
		g_free(this_);
		return NULL;
	}
	return this_;
}

struct datawindow *
gui_datawindow_new(struct gui *gui, char *name, struct callback *click,
		struct callback *close)
{
	struct datawindow *this_;
	if (!gui->meth.datawindow_new)
		return NULL; this_=g_new0(struct datawindow, 1);
	this_->priv = gui->meth.datawindow_new(gui->priv, name, click, close,
			&this_->meth);
	if (!this_->priv)
	{
		g_free(this_);
		return NULL;
	}
	return this_;
}

int gui_add_bookmark(struct gui *gui, struct pcoord *c, char *description)
{
	int ret;
	dbg(2, "enter\n");
	if (!gui->meth.add_bookmark)
		return 0;
	ret = gui->meth.add_bookmark(gui->priv, c, description);

	dbg(2, "ret=%d\n", ret);
	return ret;
}

int gui_set_graphics(struct gui *this_, struct graphics *gra)
{
	if (!this_->meth.set_graphics)
		return 1;
	return this_->meth.set_graphics(this_->priv, gra);
}

void gui_disable_suspend(struct gui *this_)
{
	if (this_->meth.disable_suspend)
		this_->meth.disable_suspend(this_->priv);
}

int gui_has_main_loop(struct gui *this_)
{
	if (!this_->meth.run_main_loop)
		return 0;
	return 1;
}

int gui_run_main_loop(struct gui *this_)
{
	if (!gui_has_main_loop(this_))
		return 1;
	return this_->meth.run_main_loop(this_->priv);
}