/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* 
 * gal-view-etable.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-etable.h"
#include <gal/e-table/e-table-config.h>

#define PARENT_TYPE gal_view_get_type ()

static GalViewClass *gal_view_etable_parent_class;

static void
detach_table (GalViewEtable *view)
{
	if (view->table == NULL)
		return;
	if (view->table_state_changed_id) {
		gtk_signal_disconnect (GTK_OBJECT (view->table),
				       view->table_state_changed_id);
		view->table_state_changed_id = 0;
	}
	gtk_object_unref (GTK_OBJECT (view->table));
	view->table = NULL;
}

static void
detach_tree (GalViewEtable *view)
{
	if (view->tree == NULL)
		return;
	if (view->tree_state_changed_id) {
		gtk_signal_disconnect (GTK_OBJECT (view->tree),
				       view->tree_state_changed_id);
		view->tree_state_changed_id = 0;
	}
	gtk_object_unref (GTK_OBJECT (view->tree));
	view->tree = NULL;
}

static void
config_changed (ETableConfig *config, GalViewEtable *view)
{
	ETableState *state;
	if (view->state)
		gtk_object_unref(GTK_OBJECT(view->state));
	gtk_object_get (GTK_OBJECT (config),
			"state", &state,
			NULL);
	view->state = e_table_state_duplicate(state);
	gal_view_changed(GAL_VIEW(view));
}

static void
gal_view_etable_edit            (GalView *view)
{
	GalViewEtable *etable_view = GAL_VIEW_ETABLE(view);
	ETableConfig *config;

	config = e_table_config_new(etable_view->title,
				    etable_view->spec,
				    etable_view->state);

	gtk_signal_connect(GTK_OBJECT(config), "changed",
			   GTK_SIGNAL_FUNC(config_changed), view);
}

static void  
gal_view_etable_load  (GalView *view,
		       const char *filename)
{
	e_table_state_load_from_file(GAL_VIEW_ETABLE(view)->state, filename);
}

static void
gal_view_etable_save    (GalView *view,
			 const char *filename)
{
	e_table_state_save_to_file(GAL_VIEW_ETABLE(view)->state, filename);
}

static const char *
gal_view_etable_get_title       (GalView *view)
{
	return GAL_VIEW_ETABLE(view)->title;
}

static void
gal_view_etable_set_title (GalView *view,
			   const char *title)
{
	g_free(GAL_VIEW_ETABLE(view)->title);
	GAL_VIEW_ETABLE(view)->title = g_strdup(title);
}

static const char *
gal_view_etable_get_type_code (GalView *view)
{
	return "etable";
}

static GalView *
gal_view_etable_clone       (GalView *view)
{
	GalViewEtable *gve, *new;

	gve = GAL_VIEW_ETABLE(view);

	new        = gtk_type_new (gal_view_etable_get_type ());
	new->spec  = gve->spec;
	new->title = g_strdup (gve->title);
	new->state = e_table_state_duplicate(gve->state);

	gtk_object_ref(GTK_OBJECT(new->spec));

	return GAL_VIEW(new);
}

static void
gal_view_etable_destroy         (GtkObject *object)
{
	GalViewEtable *view = GAL_VIEW_ETABLE(object);

	gal_view_etable_detach (view);

	g_free(view->title);
	if (view->spec)
		gtk_object_unref(GTK_OBJECT(view->spec));
	if (view->state)
		gtk_object_unref(GTK_OBJECT(view->state));

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

static void
gal_view_etable_class_init      (GtkObjectClass *object_class)
{
	GalViewClass *gal_view_class  = GAL_VIEW_CLASS(object_class);
	gal_view_etable_parent_class  = gtk_type_class (PARENT_TYPE);

	gal_view_class->edit          = gal_view_etable_edit         ;
	gal_view_class->load          = gal_view_etable_load         ;
	gal_view_class->save          = gal_view_etable_save         ;
	gal_view_class->get_title     = gal_view_etable_get_title    ;
	gal_view_class->set_title     = gal_view_etable_set_title    ;
	gal_view_class->get_type_code = gal_view_etable_get_type_code;
	gal_view_class->clone         = gal_view_etable_clone        ;

	object_class->destroy         = gal_view_etable_destroy      ;
}

static void
gal_view_etable_init      (GalViewEtable *gve)
{
	gve->spec  = NULL;
	gve->state = e_table_state_new();
	gve->title = NULL;
}

GtkType
gal_view_etable_get_type        (void)
{
	static guint type = 0;
	
	if (!type)
	{
		GtkTypeInfo info =
		{
			"GalViewEtable",
			sizeof (GalViewEtable),
			sizeof (GalViewEtableClass),
			(GtkClassInitFunc) gal_view_etable_class_init,
			(GtkObjectInitFunc) gal_view_etable_init,
			/* reserved_1 */ NULL,
			/* reserved_2 */ NULL,
			(GtkClassInitFunc) NULL,
		};
		
		type = gtk_type_unique (PARENT_TYPE, &info);
	}

	return type;
}

/**
 * gal_view_etable_new
 * @spec: The ETableSpecification that this view will be based upon.
 * @title: The name of the new view.
 *
 * Returns a new GalViewEtable.  This is primarily for use by
 * GalViewFactoryEtable.
 *
 * Returns: The new GalViewEtable.
 */
GalView *
gal_view_etable_new (ETableSpecification *spec,
		     const gchar *title)
{
	return gal_view_etable_construct (gtk_type_new (gal_view_etable_get_type ()), spec, title);
}

/**
 * gal_view_etable_construct
 * @view: The view to construct.
 * @spec: The ETableSpecification that this view will be based upon.
 * @title: The name of the new view.
 *
 * constructs the GalViewEtable.  To be used by subclasses and
 * language bindings.
 *
 * Returns: The GalViewEtable.
 */
GalView *
gal_view_etable_construct  (GalViewEtable *view,
			    ETableSpecification *spec,
			    const gchar *title)
{
	if (spec)
		gtk_object_ref(GTK_OBJECT(spec));
	view->spec = spec;

	if (view->state)
		gtk_object_unref(GTK_OBJECT(view->state));
	view->state = e_table_state_duplicate(spec->state);

	view->title = g_strdup(title);

	return GAL_VIEW(view);
}

void
gal_view_etable_set_state (GalViewEtable *view, ETableState *state)
{
	if (view->state)
		gtk_object_unref(GTK_OBJECT(view->state));
	view->state = e_table_state_duplicate(state);

	gal_view_changed(GAL_VIEW(view));
}

static void
table_state_changed (ETable *table, GalViewEtable *view)
{
	ETableState *state;

	state = e_table_get_state_object (table);
	gtk_object_unref (GTK_OBJECT (view->state));
	view->state = state;

	gal_view_changed(GAL_VIEW(view));
}

static void
tree_state_changed (ETree *tree, GalViewEtable *view)
{
	ETableState *state;

	state = e_tree_get_state_object (tree);
	gtk_object_unref (GTK_OBJECT (view->state));
	view->state = state;

	gal_view_changed(GAL_VIEW(view));
}

void
gal_view_etable_attach_table (GalViewEtable *view, ETable *table)
{
	gal_view_etable_detach (view);

	view->table = table;

	e_table_set_state_object(view->table, view->state);
	gtk_object_ref (GTK_OBJECT (view->table));
	view->table_state_changed_id =
		gtk_signal_connect(GTK_OBJECT(view->table), "state_change",
				   GTK_SIGNAL_FUNC (table_state_changed), view);
}

void
gal_view_etable_attach_tree (GalViewEtable *view, ETree *tree)
{
	gal_view_etable_detach (view);

	view->tree = tree;

	e_tree_set_state_object(view->tree, view->state);
	gtk_object_ref (GTK_OBJECT (view->tree));
	view->tree_state_changed_id =
		gtk_signal_connect(GTK_OBJECT(view->tree), "state_change",
				   GTK_SIGNAL_FUNC (tree_state_changed), view);
}

void
gal_view_etable_detach (GalViewEtable *view)
{
	if (view->table != NULL)
		detach_table (view);
	if (view->tree != NULL)
		detach_tree (view);
}