/* Evolution calendar - Generic view object for calendar views
 *
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Author: Federico Mena-Quintero <federico@ximian.com>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "calendar-view.h"



/* Private part of the CalendarView structure */
struct _CalendarViewPrivate {
	/* Type of the view */
	GnomeCalendarViewType view_type;

	/* Title of the view */
	char *title;
};



static void calendar_view_class_init (CalendarViewClass *class);
static void calendar_view_init (CalendarView *cview);
static void calendar_view_destroy (GtkObject *object);

static void calendar_view_edit (GalView *view);
static void calendar_view_load (GalView *view, const char *filename);
static void calendar_view_save (GalView *view, const char *filename);
static const char *calendar_view_get_title (GalView *view);
static void calendar_view_set_title (GalView *view, const char *title);
static const char *calendar_view_get_type_code (GalView *view);
static GalView *calendar_view_clone (GalView *view);

static GalViewClass *parent_class = NULL;



/**
 * calendar_view_get_type:
 * 
 * Registers the #CalendarView class if necessary, and returns the type ID
 * associated to it.
 * 
 * Return value: The type ID of the #CalendarView class.
 **/
GtkType
calendar_view_get_type (void)
{
	static GtkType calendar_view_type;

	if (!calendar_view_type) {
		static const GtkTypeInfo calendar_view_info = {
			"CalendarView",
			sizeof (CalendarView),
			sizeof (CalendarViewClass),
			(GtkClassInitFunc) calendar_view_class_init,
			(GtkObjectInitFunc) calendar_view_init,
			NULL, /* reserved_1 */
			NULL, /* reserved_2 */
			(GtkClassInitFunc) NULL
		};

		calendar_view_type = gtk_type_unique (GAL_VIEW_TYPE, &calendar_view_info);
	}

	return calendar_view_type;
}

/* Class initialization function for the calendar view */
static void
calendar_view_class_init (CalendarViewClass *class)
{
	GalViewClass *gal_view_class;
	GtkObjectClass *object_class;

	parent_class = gtk_type_class (GAL_VIEW_TYPE);

	gal_view_class = (GalViewClass *) class;
	object_class = (GtkObjectClass *) class;

	gal_view_class->edit = calendar_view_edit;
	gal_view_class->load = calendar_view_load;
	gal_view_class->save = calendar_view_save;
	gal_view_class->get_title = calendar_view_get_title;
	gal_view_class->set_title = calendar_view_set_title;
	gal_view_class->get_type_code = calendar_view_get_type_code;
	gal_view_class->clone = calendar_view_clone;

	object_class->destroy = calendar_view_destroy;
}

/* Object initialization function for the calendar view */
static void
calendar_view_init (CalendarView *cal_view)
{
	CalendarViewPrivate *priv;

	priv = g_new0 (CalendarViewPrivate, 1);
	cal_view->priv = priv;

	priv->title = NULL;
}

/* Destroy method for the calendar view */
static void
calendar_view_destroy (GtkObject *object)
{
	CalendarView *cal_view;
	CalendarViewPrivate *priv;

	g_return_if_fail (object != NULL);
	g_return_if_fail (IS_CALENDAR_VIEW (object));

	cal_view = CALENDAR_VIEW (object);
	priv = cal_view->priv;

	if (priv->title) {
		g_free (priv->title);
		priv->title = NULL;
	}

	g_free (priv);
	cal_view->priv = NULL;

	if (GTK_OBJECT_CLASS (parent_class)->destroy)
		(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}



/* edit method of the calendar view */
static void
calendar_view_edit (GalView *view)
{
	/* nothing */
}

/* load method of the calendar view */
static void
calendar_view_load (GalView *view, const char *filename)
{
	/* nothing */
}

/* save method of the calendar view */
static void
calendar_view_save (GalView *view, const char *filename)
{
	/* nothing */
}

/* get_title method of the calendar view */
static const char *
calendar_view_get_title (GalView *view)
{
	CalendarView *cal_view;
	CalendarViewPrivate *priv;

	cal_view = CALENDAR_VIEW (view);
	priv = cal_view->priv;

	return priv->title;
}

/* set_title method of the calendar view */
static void
calendar_view_set_title (GalView *view, const char *title)
{
	CalendarView *cal_view;
	CalendarViewPrivate *priv;

	cal_view = CALENDAR_VIEW (view);
	priv = cal_view->priv;

	if (priv->title)
		g_free (priv->title);

	priv->title = g_strdup (title);
}

/* get_type_code method for the calendar view */
static const char *
calendar_view_get_type_code (GalView *view)
{
	CalendarView *cal_view;
	CalendarViewPrivate *priv;

	cal_view = CALENDAR_VIEW (view);
	priv = cal_view->priv;

	switch (priv->view_type) {
	case GNOME_CAL_DAY_VIEW:
		return "day_view";

	case GNOME_CAL_WORK_WEEK_VIEW:
		return "work_week_view";

	case GNOME_CAL_WEEK_VIEW:
		return "week_view";

	case GNOME_CAL_MONTH_VIEW:
		return "month_view";

	default:
		g_assert_not_reached ();
		return NULL;
	}
}

/* clone method for the calendar view */
static GalView *
calendar_view_clone (GalView *view)
{
	CalendarView *cal_view;
	CalendarViewPrivate *priv;
	CalendarView *new_view;
	CalendarViewPrivate *new_priv;

	cal_view = CALENDAR_VIEW (view);
	priv = cal_view->priv;

	new_view = gtk_type_new (TYPE_CALENDAR_VIEW);
	new_priv = new_view->priv;

	new_priv->view_type = priv->view_type;
	new_priv->title = g_strdup (priv->title);

	return GAL_VIEW (new_view);
}



/**
 * calendar_view_construct:
 * @cal_view: A calendar view.
 * @view_type: The type of calendar view that this object will represent.
 * @title: Title for the view.
 * 
 * Constructs a calendar view by setting its view type and title.
 * 
 * Return value: The same value as @cal_view.
 **/
CalendarView *
calendar_view_construct (CalendarView *cal_view,
			 GnomeCalendarViewType view_type,
			 const char *title)
{
	CalendarViewPrivate *priv;

	g_return_val_if_fail (cal_view != NULL, NULL);
	g_return_val_if_fail (IS_CALENDAR_VIEW (cal_view), NULL);
	g_return_val_if_fail (title != NULL, NULL);

	priv = cal_view->priv;

	priv->view_type = view_type;
	priv->title = g_strdup (title);

	return cal_view;
}

/**
 * calendar_view_new:
 * @view_type: The type of calendar view that this object will represent.
 * @title: Title for the view.
 * 
 * Creates a new calendar view object.
 * 
 * Return value: A newly-created calendar view.
 **/
CalendarView *
calendar_view_new (GnomeCalendarViewType view_type, const char *title)
{
	CalendarView *cal_view;

	cal_view = gtk_type_new (TYPE_CALENDAR_VIEW);
	return calendar_view_construct (cal_view, view_type, title);
}

/**
 * calendar_view_get_view_type:
 * @cal_view: A calendar view.
 * 
 * Queries the calendar view type of a calendar view.
 * 
 * Return value: Type of calendar view.
 **/
GnomeCalendarViewType
calendar_view_get_view_type (CalendarView *cal_view)
{
	CalendarViewPrivate *priv;

	g_return_val_if_fail (cal_view != NULL, GNOME_CAL_DAY_VIEW);
	g_return_val_if_fail (IS_CALENDAR_VIEW (cal_view), GNOME_CAL_DAY_VIEW);

	priv = cal_view->priv;
	return priv->view_type;
}