gtk2/gtk/gtkcelleditable.c

/* gtkcelleditable.c
 * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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 "gtkcelleditable.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkalias.h"

static void gtk_cell_editable_base_init (GtkCellEditableIface *iface);

GType
gtk_cell_editable_get_type (void)
{
  static GType cell_editable_type = 0;

  if (! cell_editable_type)
    {
      const GTypeInfo cell_editable_info =
      {
	sizeof (GtkCellEditableIface),                 /* class_size */
	(GBaseInitFunc) gtk_cell_editable_base_init,   /* base_init */
	NULL,		                               /* base_finalize */
	NULL,
	NULL,		                               /* class_finalize */
	NULL,		                               /* class_data */
	0,
	0,
	NULL
      };

      cell_editable_type =
	g_type_register_static (G_TYPE_INTERFACE, I_("GtkCellEditable"),
				&cell_editable_info, 0);

      g_type_interface_add_prerequisite (cell_editable_type, GTK_TYPE_WIDGET);
    }

  return cell_editable_type;
}

static void
gtk_cell_editable_base_init (GtkCellEditableIface *iface)
{
  static gboolean initialized = FALSE;

  if (! initialized)
    {
      /**
       * GtkCellEditable:editing-canceled:
       *
       * Indicates whether editing on the cell has been canceled.
       *
       * Since: 2.20
       **/
      g_object_interface_install_property (iface,
                                           g_param_spec_boolean ("editing-canceled",
                                                                 P_("Editing Canceled"),
                                                                 P_("Indicates that editing has been canceled"),
                                                                 FALSE,
                                                                 GTK_PARAM_READABLE));

      /**
       * GtkCellEditable::editing-done:
       * @cell_editable: the object on which the signal was emitted
       *
       * This signal is a sign for the cell renderer to update its 
       * value from the @cell_editable. 
       *
       * Implementations of #GtkCellEditable are responsible for 
       * emitting this signal when they are done editing, e.g. 
       * #GtkEntry is emitting it when the user presses Enter.
       *
       * gtk_cell_editable_editing_done() is a convenience method
       * for emitting ::editing-done. 
       */
      g_signal_new (I_("editing-done"),
                    GTK_TYPE_CELL_EDITABLE,
                    G_SIGNAL_RUN_LAST,
                    G_STRUCT_OFFSET (GtkCellEditableIface, editing_done),
                    NULL, NULL,
                    _gtk_marshal_VOID__VOID,
                    G_TYPE_NONE, 0);

      /**
       * GtkCellEditable::remove-widget:
       * @cell_editable: the object on which the signal was emitted
       *
       * This signal is meant to indicate that the cell is finished 
       * editing, and the widget may now be destroyed. 
       *
       * Implementations of #GtkCellEditable are responsible for 
       * emitting this signal when they are done editing. It must
       * be emitted after the #GtkCellEditable::editing-done signal, 
       * to give the cell renderer a chance to update the cell's value 
       * before the widget is removed. 
       *
       * gtk_cell_editable_remove_widget() is a convenience method
       * for emitting ::remove-widget. 
       */
      g_signal_new (I_("remove-widget"),
                    GTK_TYPE_CELL_EDITABLE,
                    G_SIGNAL_RUN_LAST,
                    G_STRUCT_OFFSET (GtkCellEditableIface, remove_widget),
                    NULL, NULL,
                    _gtk_marshal_VOID__VOID,
                    G_TYPE_NONE, 0);
      initialized = TRUE;
    }
}

/**
 * gtk_cell_editable_start_editing:
 * @cell_editable: A #GtkCellEditable
 * @event: A #GdkEvent, or %NULL
 * 
 * Begins editing on a @cell_editable. @event is the #GdkEvent that began 
 * the editing process. It may be %NULL, in the instance that editing was 
 * initiated through programatic means.
 **/
void
gtk_cell_editable_start_editing (GtkCellEditable *cell_editable,
				 GdkEvent        *event)
{
  g_return_if_fail (GTK_IS_CELL_EDITABLE (cell_editable));

  (* GTK_CELL_EDITABLE_GET_IFACE (cell_editable)->start_editing) (cell_editable, event);
}

/**
 * gtk_cell_editable_editing_done:
 * @cell_editable: A #GtkTreeEditable
 * 
 * Emits the #GtkCellEditable::editing-done signal. 
 **/
void
gtk_cell_editable_editing_done (GtkCellEditable *cell_editable)
{
  g_return_if_fail (GTK_IS_CELL_EDITABLE (cell_editable));

  g_signal_emit_by_name (cell_editable, "editing-done");
}

/**
 * gtk_cell_editable_remove_widget:
 * @cell_editable: A #GtkTreeEditable
 * 
 * Emits the #GtkCellEditable::remove-widget signal.  
 **/
void
gtk_cell_editable_remove_widget (GtkCellEditable *cell_editable)
{
  g_return_if_fail (GTK_IS_CELL_EDITABLE (cell_editable));

  g_signal_emit_by_name (cell_editable, "remove-widget");
}

#define __GTK_CELL_EDITABLE_C__
#include "gtkaliasdef.c"