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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>
 *      Miguel de Icaza <miguel@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

/*
 * FIXME:
 *    Sort Dialog: when text is selected, the toggle button switches state.
 *    Make Clear all work.
 */

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

#include "e-table-config.h"

#include <stdlib.h>
#include <string.h>

#include <gtk/gtk.h>
#include <glib/gi18n.h>

#include "e-table-memory-store.h"
#include "e-table-without.h"
#include "e-unicode.h"
#include "e-util-private.h"

G_DEFINE_TYPE (ETableConfig, e_table_config, G_TYPE_OBJECT)

enum {
    CHANGED,
    LAST_SIGNAL
};

enum {
    PROP_0,
    PROP_STATE
};

enum {
    COLUMN_ITEM,
    COLUMN_VALUE
};

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

static void
config_finalize (GObject *object)
{
    ETableConfig *config = E_TABLE_CONFIG (object);

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

    if (config->source_state)
        g_object_unref (config->source_state);
    config->source_state = NULL;

    if (config->source_spec)
        g_object_unref (config->source_spec);
    config->source_spec = NULL;

    g_free (config->header);
    config->header = NULL;

    g_slist_free (config->column_names);
    config->column_names = NULL;

    g_free (config->domain);
    config->domain = NULL;

    G_OBJECT_CLASS (e_table_config_parent_class)->finalize (object);
}

static void
e_table_config_changed (ETableConfig *config,
                        ETableState *state)
{
    g_return_if_fail (E_IS_TABLE_CONFIG (config));

    g_signal_emit (config, e_table_config_signals[CHANGED], 0, state);
}

static void
config_dialog_changed (ETableConfig *config)
{
    /* enable the apply/ok buttons */
    gtk_dialog_set_response_sensitive (
        GTK_DIALOG (config->dialog_toplevel),
        GTK_RESPONSE_APPLY, TRUE);
    gtk_dialog_set_response_sensitive (
        GTK_DIALOG (config->dialog_toplevel),
        GTK_RESPONSE_OK, TRUE);
}

static void
config_get_property (GObject *object,
                     guint property_id,
                     GValue *value,
                     GParamSpec *pspec)
{
    ETableConfig *config = E_TABLE_CONFIG (object);

    switch (property_id) {
    case PROP_STATE:
        g_value_set_object (value, config->state);
        break;
    default:
        break;
    }
}

static void
e_table_config_class_init (ETableConfigClass *class)
{
    GObjectClass *object_class = G_OBJECT_CLASS (class);

    class->changed        = NULL;

    object_class->finalize = config_finalize;
    object_class->get_property = config_get_property;

    e_table_config_signals[CHANGED] = g_signal_new (
        "changed",
        G_TYPE_FROM_CLASS (object_class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (ETableConfigClass, changed),
        (GSignalAccumulator) NULL, NULL,
        g_cclosure_marshal_VOID__VOID,
        G_TYPE_NONE, 0);

    g_object_class_install_property (
        object_class,
        PROP_STATE,
        g_param_spec_object (
            "state",
            "State",
            NULL,
            E_TYPE_TABLE_STATE,
            G_PARAM_READABLE));
}

static void
configure_combo_box_add (GtkComboBox *combo_box,
                         const gchar *item,
                         const gchar *value)
{
    GtkTreeRowReference *reference;
    GtkTreeModel *model;
    GtkTreePath *path;
    GHashTable *index;
    GtkTreeIter iter;

    model = gtk_combo_box_get_model (combo_box);
    gtk_list_store_append (GTK_LIST_STORE (model), &iter);

    gtk_list_store_set (
        GTK_LIST_STORE (model), &iter,
        COLUMN_ITEM, item, COLUMN_VALUE, value, -1);

    index = g_object_get_data (G_OBJECT (combo_box), "index");
    g_return_if_fail (index != NULL);

    /* Add an entry to the tree model index. */
    path = gtk_tree_model_get_path (model, &iter);
    reference = gtk_tree_row_reference_new (model, path);
    g_return_if_fail (reference != NULL);
    g_hash_table_insert (index, g_strdup (value), reference);
    gtk_tree_path_free (path);
}

static gchar *
configure_combo_box_get_active (GtkComboBox *combo_box)
{
    GtkTreeIter iter;
    gchar *value = NULL;

    if (gtk_combo_box_get_active_iter (combo_box, &iter))
        gtk_tree_model_get (
            gtk_combo_box_get_model (combo_box), &iter,
            COLUMN_VALUE, &value, -1);

    if (value != NULL && *value == '\0') {
        g_free (value);
        value = NULL;
    }

    return value;
}

static void
configure_combo_box_set_active (GtkComboBox *combo_box,
                                const gchar *value)
{
    GtkTreeRowReference *reference;
    GHashTable *index;

    index = g_object_get_data (G_OBJECT (combo_box), "index");
    g_return_if_fail (index != NULL);

    reference = g_hash_table_lookup (index, value);
    if (reference != NULL) {
        GtkTreeModel *model;
        GtkTreePath *path;
        GtkTreeIter iter;

        model = gtk_tree_row_reference_get_model (reference);
        path = gtk_tree_row_reference_get_path (reference);

        if (path == NULL)
            return;

        if (gtk_tree_model_get_iter (model, &iter, path))
            gtk_combo_box_set_active_iter (combo_box, &iter);

        gtk_tree_path_free (path);
    }
}

static ETableColumnSpecification *
find_column_in_spec (ETableSpecification *spec,
                     gint model_col)
{
    ETableColumnSpecification **column;

    for (column = spec->columns; *column; column++) {
        if ((*column)->disabled)
            continue;
        if ((*column)->model_col != model_col)
            continue;

        return *column;
    }

    return NULL;
}

static gint
find_model_column_by_name (ETableSpecification *spec,
                           const gchar *s)
{
    ETableColumnSpecification **column;

    for (column = spec->columns; *column; column++) {

        if ((*column)->disabled)
            continue;
        if (g_ascii_strcasecmp ((*column)->title, s) == 0)
            return (*column)->model_col;
    }
    return -1;
}

static void
update_sort_and_group_config_dialog (ETableConfig *config,
                                     gboolean is_sort)
{
    ETableConfigSortWidgets *widgets;
    gint count, i;

    if (is_sort) {
        count = e_table_sort_info_sorting_get_count (
            config->temp_state->sort_info);
        widgets = &config->sort[0];
    } else {
        count = e_table_sort_info_grouping_get_count (
            config->temp_state->sort_info);
        widgets = &config->group[0];
    }

    for (i = 0; i < 4; i++) {
        gboolean sensitive = (i <= count);
        const gchar *text = "";

        gtk_widget_set_sensitive (widgets[i].frames, sensitive);

        /*
         * Sorting is set, auto select the text
         */
        g_signal_handler_block (
            widgets[i].radio_ascending,
            widgets[i].toggled_id);
        g_signal_handler_block (
            widgets[i].combo,
            widgets[i].changed_id);

        if (i < count) {
            GtkToggleButton *a, *d;
            ETableSortColumn col =
                is_sort
                ? e_table_sort_info_sorting_get_nth (
                    config->temp_state->sort_info,
                    i)
                :  e_table_sort_info_grouping_get_nth (
                    config->temp_state->sort_info,
                    i);

            ETableColumnSpecification *column =
                find_column_in_spec (config->source_spec, col.column);

            if (!column) {
                /*
                 * This is a bug in the programmer
                 * stuff, but by the time we arrive
                 * here, the user has been given a
                 * warning
                 */
                continue;
            }

            text = column->title;

            /*
             * Update radio buttons
             */
            a = GTK_TOGGLE_BUTTON (
                widgets[i].radio_ascending);
            d = GTK_TOGGLE_BUTTON (
                widgets[i].radio_descending);

            gtk_toggle_button_set_active (col.ascending ? a : d, 1);
        } else {
            GtkToggleButton *t;

            t = GTK_TOGGLE_BUTTON (
                widgets[i].radio_ascending);

            if (is_sort)
                g_return_if_fail (
                    widgets[i].radio_ascending !=
                    config->group[i].radio_ascending);
            else
                g_return_if_fail (
                    widgets[i].radio_ascending !=
                    config->sort[i].radio_ascending);
            gtk_toggle_button_set_active (t, 1);
        }

        /* Set the text */
        configure_combo_box_set_active (
            GTK_COMBO_BOX (widgets[i].combo), text);

        g_signal_handler_unblock (
            widgets[i].radio_ascending,
            widgets[i].toggled_id);
        g_signal_handler_unblock (
            widgets[i].combo,
            widgets[i].changed_id);
    }
}

static void
config_sort_info_update (ETableConfig *config)
{
    ETableSortInfo *info = config->state->sort_info;
    GString *res;
    gint count, i;

    count = e_table_sort_info_sorting_get_count (info);
    res = g_string_new ("");

    for (i = 0; i < count; i++) {
        ETableSortColumn col = e_table_sort_info_sorting_get_nth (info, i);
        ETableColumnSpecification *column;

        column = find_column_in_spec (config->source_spec, col.column);
        if (!column) {
            g_warning ("Could not find column model in specification");
            continue;
        }

        g_string_append (res, dgettext (config->domain, (column)->title));
        g_string_append_c (res, ' ');
        g_string_append (
            res,
            col.ascending ?
            _("(Ascending)") : _("(Descending)"));

        if ((i + 1) != count)
            g_string_append (res, ", ");
    }

    if (res->str[0] == 0)
        g_string_append (res, _("Not sorted"));

    gtk_label_set_text (GTK_LABEL (config->sort_label), res->str);

    g_string_free (res, TRUE);
}

static void
config_group_info_update (ETableConfig *config)
{
    ETableSortInfo *info = config->state->sort_info;
    GString *res;
    gint count, i;

    if (!e_table_sort_info_get_can_group (info))
        return;

    count = e_table_sort_info_grouping_get_count (info);
    res = g_string_new ("");

    for (i = 0; i < count; i++) {
        ETableSortColumn col = e_table_sort_info_grouping_get_nth (info, i);
        ETableColumnSpecification *column;

        column = find_column_in_spec (config->source_spec, col.column);
        if (!column) {
            g_warning ("Could not find model column in specification");
            continue;
        }

        g_string_append (res, dgettext (config->domain, (column)->title));
        g_string_append_c (res, ' ');
        g_string_append (
            res,
            col.ascending ?
            _("(Ascending)") : _("(Descending)"));

        if ((i + 1) != count)
            g_string_append (res, ", ");
    }
    if (res->str[0] == 0)
        g_string_append (res, _("No grouping"));

    gtk_label_set_text (GTK_LABEL (config->group_label), res->str);
    g_string_free (res, TRUE);
}

static void
setup_fields (ETableConfig *config)
{
    gint i;

    e_table_model_freeze ((ETableModel *) config->available_model);
    e_table_model_freeze ((ETableModel *) config->shown_model);
    e_table_without_show_all (config->available_model);
    e_table_subset_variable_clear (config->shown_model);

    if (config->temp_state) {
        for (i = 0; i < config->temp_state->col_count; i++) {
            gint j, idx;
            for (j = 0, idx = 0; j < config->temp_state->columns[i]; j++)
                if (!config->source_spec->columns[j]->disabled)
                    idx++;

            e_table_subset_variable_add (config->shown_model, idx);
            e_table_without_hide (config->available_model, GINT_TO_POINTER (idx));
        }
    }
    e_table_model_thaw ((ETableModel *) config->available_model);
    e_table_model_thaw ((ETableModel *) config->shown_model);
}

static void
config_fields_info_update (ETableConfig *config)
{
    ETableColumnSpecification **column;
    GString *res = g_string_new ("");
    gint i, j;

    for (i = 0; i < config->state->col_count; i++) {
        for (j = 0, column = config->source_spec->columns; *column; column++, j++) {

            if ((*column)->disabled)
                continue;

            if (config->state->columns[i] != j)
                continue;

            g_string_append (res, dgettext (config->domain, (*column)->title));
            if (i + 1 < config->state->col_count)
                g_string_append (res, ", ");

            break;
        }
    }

    gtk_label_set_text (GTK_LABEL (config->fields_label), res->str);
    g_string_free (res, TRUE);
}

static void
do_sort_and_group_config_dialog (ETableConfig *config,
                                 gboolean is_sort)
{
    GtkDialog *dialog;
    gint response, running = 1;

    config->temp_state = e_table_state_duplicate (config->state);

    update_sort_and_group_config_dialog (config, is_sort);

    gtk_widget_grab_focus (GTK_WIDGET (
        is_sort
        ? config->sort[0].combo
        : config->group[0].combo));

    if (is_sort)
        dialog = GTK_DIALOG (config->dialog_sort);
    else
        dialog = GTK_DIALOG (config->dialog_group_by);

    gtk_window_set_transient_for (
        GTK_WINDOW (dialog), GTK_WINDOW (config->dialog_toplevel));

    do {
        response = gtk_dialog_run (dialog);
        switch (response) {
        case 0: /* clear fields */
            if (is_sort) {
                e_table_sort_info_sorting_truncate (
                    config->temp_state->sort_info, 0);
            } else {
                e_table_sort_info_grouping_truncate (
                    config->temp_state->sort_info, 0);
            }
            update_sort_and_group_config_dialog (config, is_sort);
            break;

        case GTK_RESPONSE_OK:
            g_object_unref (config->state);
            config->state = config->temp_state;
            config->temp_state = NULL;
            running = 0;
            config_dialog_changed (config);
            break;

        case GTK_RESPONSE_DELETE_EVENT:
        case GTK_RESPONSE_CANCEL:
            g_object_unref (config->temp_state);
            config->temp_state = NULL;
            running = 0;
            break;
        }

    } while (running);
    gtk_widget_hide (GTK_WIDGET (dialog));

    if (is_sort)
        config_sort_info_update (config);
    else
        config_group_info_update (config);
}

static void
do_fields_config_dialog (ETableConfig *config)
{
    GtkDialog *dialog;
    GtkWidget *widget;
    gint response, running = 1;

    dialog = GTK_DIALOG (config->dialog_show_fields);

    gtk_widget_ensure_style (config->dialog_show_fields);

    widget = gtk_dialog_get_content_area (dialog);
    gtk_container_set_border_width (GTK_CONTAINER (widget), 0);

    widget = gtk_dialog_get_action_area (dialog);
    gtk_container_set_border_width (GTK_CONTAINER (widget), 12);

    config->temp_state = e_table_state_duplicate (config->state);

    setup_fields (config);

    gtk_window_set_transient_for (
        GTK_WINDOW (config->dialog_show_fields),
        GTK_WINDOW (config->dialog_toplevel));

    do {
        response = gtk_dialog_run (GTK_DIALOG (config->dialog_show_fields));
        switch (response) {
        case GTK_RESPONSE_OK:
            g_object_unref (config->state);
            config->state = config->temp_state;
            config->temp_state = NULL;
            running = 0;
            config_dialog_changed (config);
            break;

        case GTK_RESPONSE_DELETE_EVENT:
        case GTK_RESPONSE_CANCEL:
            g_object_unref (config->temp_state);
            config->temp_state = NULL;
            running = 0;
            break;
        }

    } while (running);
    gtk_widget_hide (GTK_WIDGET (config->dialog_show_fields));

    config_fields_info_update (config);
}

static ETableMemoryStoreColumnInfo store_columns[] = {
    E_TABLE_MEMORY_STORE_STRING,
    E_TABLE_MEMORY_STORE_INTEGER,
    E_TABLE_MEMORY_STORE_TERMINATOR
};

static ETableModel *
create_store (ETableConfig *config)
{
    gint i;
    ETableModel *store;

    store = e_table_memory_store_new (store_columns);
    for (i = 0; config->source_spec->columns[i]; i++) {

        gchar *text;

        if (config->source_spec->columns[i]->disabled)
            continue;

        text = g_strdup (dgettext (
            config->domain,
            config->source_spec->columns[i]->title));
        e_table_memory_store_insert_adopt (
            E_TABLE_MEMORY_STORE (store), -1, NULL, text, i);
    }

    return store;
}

static const gchar *spec =
"<ETableSpecification gettext-domain=\"" GETTEXT_PACKAGE "\""
" no-headers=\"true\" cursor-mode=\"line\" draw-grid=\"false\" "
" draw-focus=\"true\" selection-mode=\"browse\">"
"<ETableColumn model_col= \"0\" _title=\"Name\" minimum_width=\"30\""
" resizable=\"true\" cell=\"string\" compare=\"string\"/>"
"<ETableState> <column source=\"0\"/>"
"<grouping/>"
"</ETableState>"
"</ETableSpecification>";

static GtkWidget *
e_table_proxy_etable_shown_new (ETableModel *store)
{
    ETableModel *model = NULL;
    GtkWidget *widget;

    model = e_table_subset_variable_new (store);

    widget = e_table_new (model, NULL, spec, NULL);

    atk_object_set_name (
        gtk_widget_get_accessible (widget),
        _("Show Fields"));

    return widget;
}

static GtkWidget *
e_table_proxy_etable_available_new (ETableModel *store)
{
    ETableModel *model;
    GtkWidget *widget;

    model = e_table_without_new (
        store, NULL, NULL, NULL, NULL, NULL, NULL, NULL);

    e_table_without_show_all (E_TABLE_WITHOUT (model));

    widget = e_table_new (model, NULL, spec, NULL);

    atk_object_set_name (
        gtk_widget_get_accessible (widget),
        _("Available Fields"));

    return widget;
}

static void
config_button_fields (GtkWidget *widget,
                      ETableConfig *config)
{
    do_fields_config_dialog (config);
}

static void
config_button_sort (GtkWidget *widget,
                    ETableConfig *config)
{
    do_sort_and_group_config_dialog (config, TRUE);
}

static void
config_button_group (GtkWidget *widget,
                     ETableConfig *config)
{
    do_sort_and_group_config_dialog (config, FALSE);
}

static void
dialog_destroyed (gpointer data,
                  GObject *where_object_was)
{
    ETableConfig *config = data;
    g_object_unref (config);
}

static void
dialog_response (GtkWidget *dialog,
                 gint response_id,
                 ETableConfig *config)
{
    if (response_id == GTK_RESPONSE_APPLY
        || response_id == GTK_RESPONSE_OK) {
        e_table_config_changed (config, config->state);
    }

    if (response_id == GTK_RESPONSE_CANCEL
        || response_id == GTK_RESPONSE_OK) {
        gtk_widget_destroy (dialog);
    }
}

/*
 * Invoked by the GtkBuilder auto-connect code
 */
static GtkWidget *
e_table_proxy_gtk_combo_text_new (void)
{
    GtkCellRenderer *renderer;
    GtkListStore *store;
    GtkWidget *combo_box;
    GHashTable *index;

    store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);
    combo_box = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store));

    renderer = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (
        GTK_CELL_LAYOUT (combo_box), renderer, FALSE);
    gtk_cell_layout_add_attribute (
        GTK_CELL_LAYOUT (combo_box), renderer, "text", COLUMN_ITEM);

    /* Embed a reverse-lookup index into the widget. */
    index = g_hash_table_new_full (
        g_str_hash, g_str_equal,
        (GDestroyNotify) g_free,
        (GDestroyNotify) gtk_tree_row_reference_free);
    g_object_set_data_full (
        G_OBJECT (combo_box), "index", index,
        (GDestroyNotify) g_hash_table_destroy);

    return combo_box;
}

static void
connect_button (ETableConfig *config,
                GtkBuilder *builder,
                const gchar *widget_name,
                GCallback cback)
{
    GtkWidget *button = e_builder_get_widget (builder, widget_name);

    if (button)
        g_signal_connect (button, "clicked", cback, config);
}

static gint
get_source_model_col_index (ETableConfig *config,
                            gint idx)
{
    gint visible_index;
    ETableModel *src_model;

    src_model = E_TABLE_SUBSET (config->available_model)->source;

    visible_index = e_table_subset_view_to_model_row (
        E_TABLE_SUBSET (config->available_model), idx);

    return GPOINTER_TO_INT (e_table_model_value_at (src_model, 1, visible_index));
}

static void
sort_combo_changed (GtkComboBox *combo_box,
                    ETableConfigSortWidgets *sort)
{
    ETableConfig *config = sort->e_table_config;
    ETableSortInfo *sort_info = config->temp_state->sort_info;
    ETableConfigSortWidgets *base = &config->sort[0];
    GtkToggleButton *toggle_button;
    gint idx = sort - base;
    gchar *s;

    s = configure_combo_box_get_active (combo_box);

    if (s != NULL) {
        ETableSortColumn c;
        gint col;

        col = find_model_column_by_name (config->source_spec, s);
        if (col == -1) {
            g_warning ("sort: This should not happen (%s)", s);
            g_free (s);
            return;
        }

        toggle_button = GTK_TOGGLE_BUTTON (
            config->sort[idx].radio_ascending);
        c.ascending = gtk_toggle_button_get_active (toggle_button);
        c.column = col;
        e_table_sort_info_sorting_set_nth (sort_info, idx, c);

        update_sort_and_group_config_dialog (config, TRUE);
    }  else {
        e_table_sort_info_sorting_truncate (sort_info, idx);
        update_sort_and_group_config_dialog (config, TRUE);
    }

    g_free (s);
}

static void
sort_ascending_toggled (GtkToggleButton *t,
                        ETableConfigSortWidgets *sort)
{
    ETableConfig *config = sort->e_table_config;
    ETableSortInfo *si = config->temp_state->sort_info;
    ETableConfigSortWidgets *base = &config->sort[0];
    gint idx = sort - base;
    ETableSortColumn c;

    c = e_table_sort_info_sorting_get_nth (si, idx);
    c.ascending = gtk_toggle_button_get_active (t);
    e_table_sort_info_sorting_set_nth (si, idx, c);
}

static void
configure_sort_dialog (ETableConfig *config,
                       GtkBuilder *builder)
{
    GSList *l;
    gint i;

    const gchar *algs[] = {
        "alignment4",
        "alignment3",
        "alignment2",
        "alignment1",
        NULL
    };

    for (i = 0; i < 4; i++) {
        gchar buffer[80];

        snprintf (buffer, sizeof (buffer), "sort-combo-%d", i + 1);
        config->sort[i].combo = e_table_proxy_gtk_combo_text_new ();
        gtk_widget_show (GTK_WIDGET (config->sort[i].combo));
        gtk_container_add (
            GTK_CONTAINER (e_builder_get_widget (
            builder, algs[i])), config->sort[i].combo);
        configure_combo_box_add (
            GTK_COMBO_BOX (config->sort[i].combo), "", "");

        snprintf (buffer, sizeof (buffer), "frame-sort-%d", i + 1);
        config->sort[i].frames =
            e_builder_get_widget (builder, buffer);

        snprintf (
            buffer, sizeof (buffer),
            "radiobutton-ascending-sort-%d", i + 1);
        config->sort[i].radio_ascending = e_builder_get_widget (
            builder, buffer);

        snprintf (
            buffer, sizeof (buffer),
            "radiobutton-descending-sort-%d", i + 1);
        config->sort[i].radio_descending = e_builder_get_widget (
            builder, buffer);

        config->sort[i].e_table_config = config;
    }

    for (l = config->column_names; l; l = l->next) {
        gchar *label = l->data;

        for (i = 0; i < 4; i++) {
            configure_combo_box_add (
                GTK_COMBO_BOX (config->sort[i].combo),
                dgettext (config->domain, label), label);
        }
    }

    /*
     * After we have runtime modified things, signal connect
     */
    for (i = 0; i < 4; i++) {
        config->sort[i].changed_id = g_signal_connect (
            config->sort[i].combo,
            "changed", G_CALLBACK (sort_combo_changed),
            &config->sort[i]);

        config->sort[i].toggled_id = g_signal_connect (
            config->sort[i].radio_ascending,
            "toggled", G_CALLBACK (sort_ascending_toggled),
            &config->sort[i]);
    }
}

static void
group_combo_changed (GtkComboBox *combo_box,
                     ETableConfigSortWidgets *group)
{
    ETableConfig *config = group->e_table_config;
    ETableSortInfo *sort_info = config->temp_state->sort_info;
    ETableConfigSortWidgets *base = &config->group[0];
    gint idx = group - base;
    gchar *s;

    s = configure_combo_box_get_active (combo_box);

    if (s != NULL) {
        GtkToggleButton *toggle_button;
        ETableSortColumn c;
        gint col;

        col = find_model_column_by_name (config->source_spec, s);
        if (col == -1) {
            g_warning ("grouping: this should not happen, %s", s);
            g_free (s);
            return;
        }

        toggle_button = GTK_TOGGLE_BUTTON (
            config->group[idx].radio_ascending);
        c.ascending = gtk_toggle_button_get_active (toggle_button);
        c.column = col;
        e_table_sort_info_grouping_set_nth (sort_info, idx, c);

        update_sort_and_group_config_dialog (config, FALSE);
    }  else {
        e_table_sort_info_grouping_truncate (sort_info, idx);
        update_sort_and_group_config_dialog (config, FALSE);
    }

    g_free (s);
}

static void
group_ascending_toggled (GtkToggleButton *t,
                         ETableConfigSortWidgets *group)
{
    ETableConfig *config = group->e_table_config;
    ETableSortInfo *si = config->temp_state->sort_info;
    ETableConfigSortWidgets *base = &config->group[0];
    gint idx = group - base;
    ETableSortColumn c;

    c = e_table_sort_info_grouping_get_nth (si, idx);
    c.ascending = gtk_toggle_button_get_active (t);
    e_table_sort_info_grouping_set_nth (si, idx, c);
}

static void
configure_group_dialog (ETableConfig *config,
                        GtkBuilder *builder)
{
    GSList *l;
    gint i;
    const gchar *vboxes[] = {"vbox7", "vbox9", "vbox11", "vbox13", NULL};

    for (i = 0; i < 4; i++) {
        gchar buffer[80];

        snprintf (buffer, sizeof (buffer), "group-combo-%d", i + 1);
        config->group[i].combo = e_table_proxy_gtk_combo_text_new ();
        gtk_widget_show (GTK_WIDGET (config->group[i].combo));
        gtk_box_pack_start (
            GTK_BOX (e_builder_get_widget (builder, vboxes[i])),
            config->group[i].combo, FALSE, FALSE, 0);

        configure_combo_box_add (
            GTK_COMBO_BOX (config->group[i].combo), "", "");

        snprintf (buffer, sizeof (buffer), "frame-group-%d", i + 1);
        config->group[i].frames =
            e_builder_get_widget (builder, buffer);

        snprintf (
            buffer, sizeof (buffer),
            "radiobutton-ascending-group-%d", i + 1);
        config->group[i].radio_ascending = e_builder_get_widget (
            builder, buffer);

        snprintf (
            buffer, sizeof (buffer),
            "radiobutton-descending-group-%d", i + 1);
        config->group[i].radio_descending = e_builder_get_widget (
            builder, buffer);

        snprintf (
            buffer, sizeof (buffer),
            "checkbutton-group-%d", i + 1);
        config->group[i].view_check = e_builder_get_widget (
            builder, buffer);

        config->group[i].e_table_config = config;
    }

    for (l = config->column_names; l; l = l->next) {
        gchar *label = l->data;

        for (i = 0; i < 4; i++) {
            configure_combo_box_add (
                GTK_COMBO_BOX (config->group[i].combo),
                dgettext (config->domain, label), label);
        }
    }

    /*
     * After we have runtime modified things, signal connect
     */
    for (i = 0; i < 4; i++) {
        config->group[i].changed_id = g_signal_connect (
            config->group[i].combo,
            "changed", G_CALLBACK (group_combo_changed),
            &config->group[i]);

        config->group[i].toggled_id = g_signal_connect (
            config->group[i].radio_ascending,
            "toggled", G_CALLBACK (group_ascending_toggled),
            &config->group[i]);
    }
}

static void
add_column (gint model_row,
            gpointer closure)
{
    GList **columns = closure;
    *columns = g_list_prepend (*columns, GINT_TO_POINTER (model_row));
}

static void
config_button_add (GtkWidget *widget,
                   ETableConfig *config)
{
    GList *columns = NULL;
    GList *column;
    gint count;
    gint i;

    e_table_selected_row_foreach (config->available, add_column, &columns);
    columns = g_list_reverse (columns);

    count = g_list_length (columns);

    config->temp_state->columns = g_renew (
        int, config->temp_state->columns,
        config->temp_state->col_count + count);
    config->temp_state->expansions = g_renew (
        gdouble, config->temp_state->expansions,
        config->temp_state->col_count + count);
    i = config->temp_state->col_count;
    for (column = columns; column; column = column->next) {
        config->temp_state->columns[i] =
            get_source_model_col_index (
            config, GPOINTER_TO_INT (column->data));
        config->temp_state->expansions[i] =
            config->source_spec->columns
            [config->temp_state->columns[i]]->expansion;
        i++;
    }
    config->temp_state->col_count += count;

    g_list_free (columns);

    setup_fields (config);
}

static void
config_button_remove (GtkWidget *widget,
                      ETableConfig *config)
{
    GList *columns = NULL;
    GList *column;

    e_table_selected_row_foreach (config->shown, add_column, &columns);

    for (column = columns; column; column = column->next) {
        gint row = GPOINTER_TO_INT (column->data);

        memmove (
            config->temp_state->columns + row,
            config->temp_state->columns + row + 1,
            sizeof (gint) * (config->temp_state->col_count - row - 1));
        memmove (
            config->temp_state->expansions + row,
            config->temp_state->expansions + row + 1,
            sizeof (gdouble) * (config->temp_state->col_count - row - 1));
        config->temp_state->col_count--;
    }
    config->temp_state->columns = g_renew (
        int, config->temp_state->columns,
        config->temp_state->col_count);
    config->temp_state->expansions = g_renew (
        gdouble, config->temp_state->expansions,
        config->temp_state->col_count);

    g_list_free (columns);

    setup_fields (config);
}

static void
config_button_up (GtkWidget *widget,
                  ETableConfig *config)
{
    GList *columns = NULL;
    GList *column;
    gint *new_shown;
    gdouble *new_expansions;
    gint next_col;
    gdouble next_expansion;
    gint i;

    e_table_selected_row_foreach (config->shown, add_column, &columns);

    /* if no columns left, just return */
    if (columns == NULL)
        return;

    columns = g_list_reverse (columns);

    new_shown = g_new (int, config->temp_state->col_count);
    new_expansions = g_new (double, config->temp_state->col_count);

    column = columns;

    next_col = config->temp_state->columns[0];
    next_expansion = config->temp_state->expansions[0];

    for (i = 1; i < config->temp_state->col_count; i++) {
        if (column && (GPOINTER_TO_INT (column->data) == i)) {
            new_expansions[i - 1] = config->temp_state->expansions[i];
            new_shown[i - 1] = config->temp_state->columns[i];
            column = column->next;
        } else {
            new_shown[i - 1] = next_col;
            next_col = config->temp_state->columns[i];

            new_expansions[i - 1] = next_expansion;
            next_expansion = config->temp_state->expansions[i];
        }
    }

    new_shown[i - 1] = next_col;
    new_expansions[i - 1] = next_expansion;

    g_free (config->temp_state->columns);
    g_free (config->temp_state->expansions);

    config->temp_state->columns = new_shown;
    config->temp_state->expansions = new_expansions;

    g_list_free (columns);

    setup_fields (config);
}

static void
config_button_down (GtkWidget *widget,
                    ETableConfig *config)
{
    GList *columns = NULL;
    GList *column;
    gint *new_shown;
    gdouble *new_expansions;
    gint next_col;
    gdouble next_expansion;
    gint i;

    e_table_selected_row_foreach (config->shown, add_column, &columns);

    /* if no columns left, just return */
    if (columns == NULL)
        return;

    new_shown = g_new (gint, config->temp_state->col_count);
    new_expansions = g_new (gdouble, config->temp_state->col_count);

    column = columns;

    next_col =
        config->temp_state->columns[config->temp_state->col_count - 1];
    next_expansion =
        config->temp_state->expansions[config->temp_state->col_count - 1];

    for (i = config->temp_state->col_count - 1; i > 0; i--) {
        if (column && (GPOINTER_TO_INT (column->data) == i - 1)) {
            new_expansions[i] = config->temp_state->expansions[i - 1];
            new_shown[i] = config->temp_state->columns[i - 1];
            column = column->next;
        } else {
            new_shown[i] = next_col;
            next_col = config->temp_state->columns[i - 1];

            new_expansions[i] = next_expansion;
            next_expansion = config->temp_state->expansions[i - 1];
        }
    }

    new_shown[0] = next_col;
    new_expansions[0] = next_expansion;

    g_free (config->temp_state->columns);
    g_free (config->temp_state->expansions);

    config->temp_state->columns = new_shown;
    config->temp_state->expansions = new_expansions;

    g_list_free (columns);

    setup_fields (config);
}

static void
configure_fields_dialog (ETableConfig *config,
                         GtkBuilder *builder)
{
    GtkWidget *scrolled;
    GtkWidget *etable;
    ETableModel *store = create_store (config);

    /* "custom-available" widget */
    etable = e_table_proxy_etable_available_new (store);
    gtk_widget_show (etable);
    scrolled = e_builder_get_widget (builder, "available-scrolled");
    gtk_container_add (GTK_CONTAINER (scrolled), etable);
    config->available = E_TABLE (etable);
    g_object_get (
        config->available,
        "model", &config->available_model,
        NULL);
    gtk_widget_show_all (etable);
    gtk_label_set_mnemonic_widget (
        GTK_LABEL (e_builder_get_widget (
        builder, "label-available")), etable);

    /* "custom-shown" widget */
    etable = e_table_proxy_etable_shown_new (store);
    gtk_widget_show (etable);
    scrolled = e_builder_get_widget (builder, "shown-scrolled");
    gtk_container_add (GTK_CONTAINER (scrolled), etable);
    config->shown = E_TABLE (etable);
    g_object_get (
        config->shown,
        "model", &config->shown_model,
        NULL);
    gtk_widget_show_all (etable);
    gtk_label_set_mnemonic_widget (
        GTK_LABEL (e_builder_get_widget (
        builder, "label-displayed")), etable);

    connect_button (
        config, builder, "button-add",
        G_CALLBACK (config_button_add));
    connect_button (
        config, builder, "button-remove",
        G_CALLBACK (config_button_remove));
    connect_button (
        config, builder, "button-up",
        G_CALLBACK (config_button_up));
    connect_button (
        config, builder, "button-down",
        G_CALLBACK (config_button_down));

    setup_fields (config);

    g_object_unref (store);
}

static void
setup_gui (ETableConfig *config)
{
    GtkBuilder *builder;
    gboolean can_group;

    can_group = e_table_sort_info_get_can_group (config->state->sort_info);
    builder = gtk_builder_new ();
    e_load_ui_builder_definition (builder, "e-table-config.ui");

    config->dialog_toplevel = e_builder_get_widget (
        builder, "e-table-config");

    if (config->header)
        gtk_window_set_title (
            GTK_WINDOW (config->dialog_toplevel),
            config->header);

    config->dialog_show_fields = e_builder_get_widget (
        builder, "dialog-show-fields");
    config->dialog_group_by =  e_builder_get_widget (
        builder, "dialog-group-by");
    config->dialog_sort = e_builder_get_widget (
        builder, "dialog-sort");

    config->sort_label = e_builder_get_widget (
        builder, "label-sort");
    config->group_label = e_builder_get_widget (
        builder, "label-group");
    config->fields_label = e_builder_get_widget (
        builder, "label-fields");

    connect_button (
        config, builder, "button-sort",
        G_CALLBACK (config_button_sort));
    connect_button (
        config, builder, "button-group",
        G_CALLBACK (config_button_group));
    connect_button (
        config, builder, "button-fields",
        G_CALLBACK (config_button_fields));

    if (!can_group) {
        GtkWidget *w;

        w = e_builder_get_widget (builder, "button-group");
        if (w)
            gtk_widget_hide (w);

        w = e_builder_get_widget (builder, "label3");
        if (w)
            gtk_widget_hide (w);

        w = config->group_label;
        if (w)
            gtk_widget_hide (w);
    }

    configure_sort_dialog (config, builder);
    configure_group_dialog (config, builder);
    configure_fields_dialog (config, builder);

    g_object_weak_ref (
        G_OBJECT (config->dialog_toplevel),
        dialog_destroyed, config);

    g_signal_connect (
        config->dialog_toplevel, "response",
        G_CALLBACK (dialog_response), config);

    g_object_unref (builder);
}

static void
e_table_config_init (ETableConfig *config)
{
    config->domain = NULL;
}

ETableConfig *
e_table_config_construct (ETableConfig *config,
                          const gchar *header,
                          ETableSpecification *spec,
                          ETableState *state,
                          GtkWindow *parent_window)
{
    ETableColumnSpecification **column;

    g_return_val_if_fail (config != NULL, NULL);
    g_return_val_if_fail (header != NULL, NULL);
    g_return_val_if_fail (spec != NULL, NULL);
    g_return_val_if_fail (state != NULL, NULL);

    config->source_spec = spec;
    config->source_state = state;
    config->header = g_strdup (header);

    g_object_ref (config->source_spec);
    g_object_ref (config->source_state);

    config->state = e_table_state_duplicate (state);

    config->domain = g_strdup (spec->domain);

    for (column = config->source_spec->columns; *column; column++) {
        gchar *label = (*column)->title;

        if ((*column)->disabled)
            continue;

        config->column_names = g_slist_append (
            config->column_names, label);
    }

    setup_gui (config);

    gtk_window_set_transient_for (GTK_WINDOW (config->dialog_toplevel),
                      parent_window);

    config_sort_info_update   (config);
    config_group_info_update  (config);
    config_fields_info_update (config);

    return E_TABLE_CONFIG (config);
}

/**
 * e_table_config_new:
 * @header: The title of the dialog for the ETableConfig.
 * @spec: The specification for the columns to allow.
 * @state: The current state of the configuration.
 *
 * Creates a new ETable config object.
 *
 * Returns: The config object.
 */
ETableConfig *
e_table_config_new (const gchar *header,
                    ETableSpecification *spec,
                    ETableState *state,
                    GtkWindow *parent_window)
{
    ETableConfig *config;
    GtkDialog *dialog;
    GtkWidget *widget;

    config = g_object_new (E_TYPE_TABLE_CONFIG, NULL);

    e_table_config_construct (
        config, header, spec, state, parent_window);

    dialog = GTK_DIALOG (config->dialog_toplevel);

    gtk_widget_ensure_style (config->dialog_toplevel);

    widget = gtk_dialog_get_content_area (dialog);
    gtk_container_set_border_width (GTK_CONTAINER (widget), 0);

    widget = gtk_dialog_get_action_area (dialog);
    gtk_container_set_border_width (GTK_CONTAINER (widget), 12);

    gtk_dialog_set_response_sensitive (
        GTK_DIALOG (config->dialog_toplevel),
        GTK_RESPONSE_APPLY, FALSE);
    gtk_widget_show (config->dialog_toplevel);

    return E_TABLE_CONFIG (config);
}

/**
 * e_table_config_raise:
 * @config: The ETableConfig object.
 *
 * Raises the dialog associated with this ETableConfig object.
 */
void
e_table_config_raise (ETableConfig *config)
{
    GdkWindow *window;

    window = gtk_widget_get_window (GTK_WIDGET (config->dialog_toplevel));
    gdk_window_raise (window);
}