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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Chris Lahey <clahey@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include "table/e-table-config.h"

#include "gal-view-etable.h"

G_DEFINE_TYPE (GalViewEtable, gal_view_etable, GAL_TYPE_VIEW)

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

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

static void
config_changed (ETableConfig *config,
                GalViewEtable *view)
{
    ETableState *state;
    if (view->state)
        g_object_unref (view->state);
    g_object_get (
        config,
        "state", &state,
        NULL);
    view->state = e_table_state_duplicate (state);
    g_object_unref (state);

    gal_view_changed (GAL_VIEW (view));
}

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

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

    g_signal_connect (
        config, "changed",
        G_CALLBACK (config_changed), view);
}

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

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

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

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

static const gchar *
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 = g_object_new (GAL_TYPE_VIEW_ETABLE, NULL);
    new->spec  = gve->spec;
    new->title = g_strdup (gve->title);
    g_object_unref (new->state);
    new->state = e_table_state_duplicate (gve->state);

    g_object_ref (new->spec);

    return GAL_VIEW (new);
}

static void
gal_view_etable_dispose (GObject *object)
{
    GalViewEtable *view = GAL_VIEW_ETABLE (object);

    gal_view_etable_detach (view);

    g_free (view->title);
    view->title = NULL;

    if (view->spec)
        g_object_unref (view->spec);
    view->spec = NULL;

    if (view->state)
        g_object_unref (view->state);
    view->state = NULL;

    /* Chain up to parent's dispose() method. */
    G_OBJECT_CLASS (gal_view_etable_parent_class)->dispose (object);
}

static void
gal_view_etable_class_init (GalViewEtableClass *class)
{
    GalViewClass *gal_view_class  = GAL_VIEW_CLASS (class);
    GObjectClass *object_class = G_OBJECT_CLASS (class);

    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->dispose         = gal_view_etable_dispose;
}

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

/**
 * 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)
{
    GalViewEtable *view;

    g_return_val_if_fail (E_IS_TABLE_SPECIFICATION (spec), NULL);

    view = g_object_new (GAL_TYPE_VIEW_ETABLE, NULL);

    return gal_view_etable_construct (view, 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)
{
    g_return_val_if_fail (GAL_IS_VIEW_ETABLE (view), NULL);
    g_return_val_if_fail (E_IS_TABLE_SPECIFICATION (spec), NULL);

    view->spec = g_object_ref (spec);

    if (view->state)
        g_object_unref (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)
{
    g_return_if_fail (GAL_IS_VIEW_ETABLE (view));
    g_return_if_fail (E_IS_TABLE_STATE (state));

    if (view->state)
        g_object_unref (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);
    g_object_unref (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);
    g_object_unref (view->state);
    view->state = state;

    gal_view_changed (GAL_VIEW (view));
}

void
gal_view_etable_attach_table (GalViewEtable *view,
                              ETable *table)
{
    g_return_if_fail (GAL_IS_VIEW_ETABLE (view));
    g_return_if_fail (E_IS_TABLE (table));

    gal_view_etable_detach (view);

    view->table = table;

    e_table_set_state_object (view->table, view->state);
    g_object_ref (view->table);
    view->table_state_changed_id = g_signal_connect (
        view->table, "state_change",
        G_CALLBACK (table_state_changed), view);
}

void
gal_view_etable_attach_tree (GalViewEtable *view,
                             ETree *tree)
{
    g_return_if_fail (GAL_IS_VIEW_ETABLE (view));
    g_return_if_fail (E_IS_TREE (tree));

    gal_view_etable_detach (view);

    view->tree = tree;

    e_tree_set_state_object (view->tree, view->state);
    g_object_ref (view->tree);
    view->tree_state_changed_id = g_signal_connect (
        view->tree, "state_change",
        G_CALLBACK (tree_state_changed), view);
}

void
gal_view_etable_detach (GalViewEtable *view)
{
    g_return_if_fail (GAL_IS_VIEW_ETABLE (view));

    if (view->table != NULL)
        detach_table (view);
    if (view->tree != NULL)
        detach_tree (view);
}