path: root/widgets/table/gal-a11y-e-cell-toggle.c

/*
 * 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:
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include <gtk/gtk.h>

#include "table/e-cell-toggle.h"
#include "table/e-table-model.h"
#include <glib/gi18n.h>

#include "gal-a11y-e-cell-toggle.h"

#define PARENT_TYPE  (gal_a11y_e_cell_get_type ())
static GObjectClass *parent_class;

static void gal_a11y_e_cell_toggle_class_init (GalA11yECellToggleClass *class);

static void
gal_a11y_e_cell_toggle_dispose (GObject *object)
{
    GalA11yECellToggle *a11y = GAL_A11Y_E_CELL_TOGGLE (object);

    ETableModel *e_table_model = GAL_A11Y_E_CELL (a11y)->item->table_model;

    if (e_table_model && a11y->model_id > 0) {
        g_signal_handler_disconnect (e_table_model, a11y->model_id);
        a11y->model_id = 0;
    }

    if (parent_class->dispose)
        parent_class->dispose (object);
}

GType
gal_a11y_e_cell_toggle_get_type (void)
{
  static GType type = 0;

  if (!type)
    {
      static const GTypeInfo tinfo =
      {
    sizeof (GalA11yECellToggleClass),
    (GBaseInitFunc) NULL, /* base init */
    (GBaseFinalizeFunc) NULL, /* base finalize */
    (GClassInitFunc) gal_a11y_e_cell_toggle_class_init, /* class init */
    (GClassFinalizeFunc) NULL, /* class finalize */
    NULL, /* class data */
    sizeof (GalA11yECellToggle), /* instance size */
    0, /* nb preallocs */
    NULL, /* instance init */
    NULL /* value table */
      };

      type = g_type_register_static (GAL_A11Y_TYPE_E_CELL,
                                     "GalA11yECellToggle", &tinfo, 0);
      gal_a11y_e_cell_type_add_action_interface (type);

    }
  return type;
}

static void
gal_a11y_e_cell_toggle_class_init (GalA11yECellToggleClass *class)
{
    GObjectClass *object_class = G_OBJECT_CLASS (class);

    object_class->dispose      = gal_a11y_e_cell_toggle_dispose;
    parent_class               = g_type_class_ref (PARENT_TYPE);
}

static void
toggle_cell_action (GalA11yECell *cell)
{
    gint finished;
    GtkLayout *layout;
    GdkEventButton event;
    gint x, y, width, height;
    gint row, col;

    row = cell->row;
    col = cell->view_col;

    layout = GTK_LAYOUT (GNOME_CANVAS_ITEM (cell->item)->canvas);

    e_table_item_get_cell_geometry (
        cell->item, &row, &col, &x, &y, &width, &height);

    event.x = x + width / 2 + (gint)(GNOME_CANVAS_ITEM (cell->item)->x1);
    event.y = y + height / 2 + (gint)(GNOME_CANVAS_ITEM (cell->item)->y1);

    event.type = GDK_BUTTON_PRESS;
    event.window = gtk_layout_get_bin_window (layout);
    event.button = 1;
    event.send_event = TRUE;
    event.time = GDK_CURRENT_TIME;
    event.axes = NULL;

    g_signal_emit_by_name (cell->item, "event", &event, &finished);
}

static void
model_change_cb (ETableModel *etm,
         gint col,
         gint row,
         GalA11yECell *cell)
{
    gint value;

    if (col == cell->model_col && row == cell->row) {

        value = GPOINTER_TO_INT (
            e_table_model_value_at (cell->cell_view->e_table_model,
                        cell->model_col, cell->row));
        /* Cheat gnopernicus, or it will ignore the state change signal  */
        atk_focus_tracker_notify (ATK_OBJECT (cell));

        if (value)
            gal_a11y_e_cell_add_state (cell, ATK_STATE_CHECKED, TRUE);
        else
            gal_a11y_e_cell_remove_state (cell, ATK_STATE_CHECKED, TRUE);
    }
}

AtkObject*
gal_a11y_e_cell_toggle_new (ETableItem *item,
                ECellView  *cell_view,
                AtkObject  *parent,
                gint         model_col,
                gint         view_col,
                gint         row)
{
    AtkObject *a11y;
    GalA11yECell *cell;
    GalA11yECellToggle *toggle_cell;
    gint value;

    a11y = ATK_OBJECT (g_object_new (GAL_A11Y_TYPE_E_CELL_TOGGLE, NULL));

    g_return_val_if_fail (a11y != NULL, NULL);

    cell = GAL_A11Y_E_CELL (a11y);
    toggle_cell = GAL_A11Y_E_CELL_TOGGLE (a11y);
    a11y->role  = ATK_ROLE_TABLE_CELL;

    gal_a11y_e_cell_construct (a11y,
                   item,
                   cell_view,
                   parent,
                   model_col,
                   view_col,
                   row);

    gal_a11y_e_cell_add_action (cell,
                    "toggle",
                    /* Translators: description of a "toggle" action */
                    _("toggle the cell"),
                    NULL,              /* action keybinding */
                    toggle_cell_action);

    toggle_cell->model_id = g_signal_connect (item->table_model,
                          "model_cell_changed",
                          (GCallback) model_change_cb,
                          a11y);

    value = GPOINTER_TO_INT (
            e_table_model_value_at (cell->cell_view->e_table_model,
                        cell->model_col, cell->row));
    if (value)
        gal_a11y_e_cell_add_state (cell, ATK_STATE_CHECKED, FALSE);
    else
        gal_a11y_e_cell_remove_state (cell, ATK_STATE_CHECKED, FALSE);

    return a11y;
}