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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* 
 * gal-view.c
 * Copyright 2000, 2001, Ximian, Inc.
 *
 * Authors:
 *   Chris Lahey <clahey@ximian.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License, version 2, as published by the Free Software Foundation.
 *
 * 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; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#include <config.h>
#include <gtk/gtksignal.h>
#include "gal-view.h"
#include "gal/util/e-util.h"

#define GV_CLASS(e) ((GalViewClass *)((GtkObject *)e)->klass)

#define PARENT_TYPE gtk_object_get_type ()

#define d(x)

d(static gint depth = 0);


static GtkObjectClass *gal_view_parent_class;

enum {
    CHANGED,
    LAST_SIGNAL
};

static guint gal_view_signals [LAST_SIGNAL] = { 0, };

/**
 * gal_view_edit
 * @view: The view to edit
 */
void
gal_view_edit            (GalView *view)
{
    g_return_if_fail (view != NULL);
    g_return_if_fail (GAL_IS_VIEW (view));

    if (GV_CLASS (view)->edit)
        GV_CLASS (view)->edit (view);
}

/**
 * gal_view_load
 * @view: The view to load to
 * @filename: The file to load from
 */
void  
gal_view_load  (GalView *view,
        const char *filename)
{
    g_return_if_fail (view != NULL);
    g_return_if_fail (GAL_IS_VIEW (view));

    if (GV_CLASS (view)->load)
        GV_CLASS (view)->load (view, filename);
}

/**
 * gal_view_save
 * @view: The view to save
 * @filename: The file to save to
 */
void
gal_view_save    (GalView *view,
          const char *filename)
{
    g_return_if_fail (view != NULL);
    g_return_if_fail (GAL_IS_VIEW (view));

    if (GV_CLASS (view)->save)
        GV_CLASS (view)->save (view, filename);
}

/**
 * gal_view_get_title
 * @view: The view to query.
 *
 * Returns: The title of the view.
 */
const char *
gal_view_get_title       (GalView *view)
{
    g_return_val_if_fail (view != NULL, NULL);
    g_return_val_if_fail (GAL_IS_VIEW (view), NULL);

    if (GV_CLASS (view)->get_title)
        return GV_CLASS (view)->get_title (view);
    else
        return NULL;
}

/**
 * gal_view_set_title
 * @view: The view to set.
 * @title: The new title value.
 */
void
gal_view_set_title       (GalView *view,
              const char *title)
{
    g_return_if_fail (view != NULL);
    g_return_if_fail (GAL_IS_VIEW (view));

    if (GV_CLASS (view)->set_title)
        GV_CLASS (view)->set_title (view, title);
}

/**
 * gal_view_get_type_code
 * @view: The view to get.
 *
 * Returns: The type of the view.
 */
const char *
gal_view_get_type_code (GalView *view)
{
    g_return_val_if_fail (view != NULL, NULL);
    g_return_val_if_fail (GAL_IS_VIEW (view), NULL);

    if (GV_CLASS (view)->get_type_code)
        return GV_CLASS (view)->get_type_code (view);
    else
        return NULL;
}

/**
 * gal_view_clone
 * @view: The view to clone.
 *
 * Returns: The clone.
 */
GalView *
gal_view_clone       (GalView *view)
{
    g_return_val_if_fail (view != NULL, NULL);
    g_return_val_if_fail (GAL_IS_VIEW (view), NULL);

    if (GV_CLASS (view)->clone)
        return GV_CLASS (view)->clone (view);
    else
        return NULL;
}

/**
 * gal_view_changed
 * @view: The view that changed.
 */
void
gal_view_changed       (GalView *view)
{
    g_return_if_fail (view != NULL);
    g_return_if_fail (GAL_IS_VIEW (view));

    gtk_signal_emit(GTK_OBJECT(view),
             gal_view_signals [CHANGED]);
}

static void
gal_view_class_init      (GtkObjectClass *object_class)
{
    GalViewClass *klass   = GAL_VIEW_CLASS(object_class);
    gal_view_parent_class = gtk_type_class (PARENT_TYPE);
    
    klass->edit           = NULL;     
    klass->load           = NULL;     
    klass->save           = NULL;     
    klass->get_title      = NULL;     
    klass->clone          = NULL;

    klass->changed        = NULL;

    gal_view_signals [CHANGED] =
        gtk_signal_new ("changed",
                GTK_RUN_LAST,
                E_OBJECT_CLASS_TYPE (object_class),
                GTK_SIGNAL_OFFSET (GalViewClass, changed),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0);

    E_OBJECT_CLASS_ADD_SIGNALS (object_class, gal_view_signals, LAST_SIGNAL);
}

GtkType
gal_view_get_type        (void)
{
    static guint type = 0;
    
    if (!type)
    {
        GtkTypeInfo info =
        {
            "GalView",
            sizeof (GalView),
            sizeof (GalViewClass),
            (GtkClassInitFunc) gal_view_class_init,
            NULL,
            /* reserved_1 */ NULL,
            /* reserved_2 */ NULL,
            (GtkClassInitFunc) NULL,
        };
        
        type = gtk_type_unique (PARENT_TYPE, &info);
    }

    return type;
}