425 lines
12 KiB
C
425 lines
12 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
|
|
* Copyright 2001 Sun Microsystems Inc.
|
|
*
|
|
* This library 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) 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser 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/gtk.h>
|
|
#include "gtkcontainercellaccessible.h"
|
|
#include "gtkcellaccessible.h"
|
|
#include "gtkcellaccessibleparent.h"
|
|
|
|
typedef struct _ActionInfo ActionInfo;
|
|
struct _ActionInfo {
|
|
gchar *name;
|
|
gchar *description;
|
|
gchar *keybinding;
|
|
void (*do_action_func) (GtkCellAccessible *cell);
|
|
};
|
|
|
|
|
|
static void atk_action_interface_init (AtkActionIface *iface);
|
|
static void atk_component_interface_init (AtkComponentIface *iface);
|
|
|
|
G_DEFINE_TYPE_WITH_CODE (GtkCellAccessible, _gtk_cell_accessible, ATK_TYPE_OBJECT,
|
|
G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
|
|
G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, atk_component_interface_init))
|
|
|
|
static void
|
|
destroy_action_info (gpointer action_info)
|
|
{
|
|
ActionInfo *info = (ActionInfo *)action_info;
|
|
|
|
g_free (info->name);
|
|
g_free (info->description);
|
|
g_free (info->keybinding);
|
|
g_free (info);
|
|
}
|
|
|
|
static void
|
|
gtk_cell_accessible_object_finalize (GObject *obj)
|
|
{
|
|
GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (obj);
|
|
AtkRelationSet *relation_set;
|
|
AtkRelation *relation;
|
|
GPtrArray *target;
|
|
gpointer target_object;
|
|
gint i;
|
|
|
|
if (cell->state_set)
|
|
g_object_unref (cell->state_set);
|
|
|
|
if (cell->action_list)
|
|
g_list_free_full (cell->action_list, destroy_action_info);
|
|
|
|
relation_set = atk_object_ref_relation_set (ATK_OBJECT (obj));
|
|
if (ATK_IS_RELATION_SET (relation_set))
|
|
{
|
|
relation = atk_relation_set_get_relation_by_type (relation_set,
|
|
ATK_RELATION_NODE_CHILD_OF);
|
|
if (relation)
|
|
{
|
|
target = atk_relation_get_target (relation);
|
|
for (i = 0; i < target->len; i++)
|
|
{
|
|
target_object = g_ptr_array_index (target, i);
|
|
if (GTK_IS_CELL_ACCESSIBLE (target_object))
|
|
g_object_unref (target_object);
|
|
}
|
|
}
|
|
g_object_unref (relation_set);
|
|
}
|
|
G_OBJECT_CLASS (_gtk_cell_accessible_parent_class)->finalize (obj);
|
|
}
|
|
|
|
static gint
|
|
gtk_cell_accessible_get_index_in_parent (AtkObject *obj)
|
|
{
|
|
GtkCellAccessible *cell;
|
|
|
|
cell = GTK_CELL_ACCESSIBLE (obj);
|
|
if (atk_state_set_contains_state (cell->state_set, ATK_STATE_STALE) &&
|
|
cell->refresh_index != NULL)
|
|
{
|
|
cell->refresh_index (cell);
|
|
atk_state_set_remove_state (cell->state_set, ATK_STATE_STALE);
|
|
}
|
|
|
|
return cell->index;
|
|
}
|
|
|
|
static AtkStateSet *
|
|
gtk_cell_accessible_ref_state_set (AtkObject *obj)
|
|
{
|
|
GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (obj);
|
|
|
|
g_object_ref (cell->state_set);
|
|
|
|
return cell->state_set;
|
|
}
|
|
|
|
static void
|
|
_gtk_cell_accessible_class_init (GtkCellAccessibleClass *klass)
|
|
{
|
|
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
|
|
GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
|
|
|
|
g_object_class->finalize = gtk_cell_accessible_object_finalize;
|
|
|
|
class->get_index_in_parent = gtk_cell_accessible_get_index_in_parent;
|
|
class->ref_state_set = gtk_cell_accessible_ref_state_set;
|
|
}
|
|
|
|
static void
|
|
_gtk_cell_accessible_init (GtkCellAccessible *cell)
|
|
{
|
|
cell->widget = NULL;
|
|
cell->action_list = NULL;
|
|
cell->index = 0;
|
|
cell->refresh_index = NULL;
|
|
cell->state_set = atk_state_set_new ();
|
|
atk_state_set_add_state (cell->state_set, ATK_STATE_TRANSIENT);
|
|
atk_state_set_add_state (cell->state_set, ATK_STATE_ENABLED);
|
|
atk_state_set_add_state (cell->state_set, ATK_STATE_SENSITIVE);
|
|
atk_state_set_add_state (cell->state_set, ATK_STATE_SELECTABLE);
|
|
}
|
|
|
|
static void
|
|
widget_destroyed (GtkWidget *widget,
|
|
GtkCellAccessible *cell)
|
|
{
|
|
cell->widget = NULL;
|
|
}
|
|
|
|
void
|
|
_gtk_cell_accessible_initialise (GtkCellAccessible *cell,
|
|
GtkWidget *widget,
|
|
AtkObject *parent,
|
|
gint index)
|
|
{
|
|
cell->widget = widget;
|
|
atk_object_set_parent (ATK_OBJECT (cell), parent);
|
|
cell->index = index;
|
|
|
|
g_signal_connect_object (G_OBJECT (widget), "destroy",
|
|
G_CALLBACK (widget_destroyed), cell, 0);
|
|
}
|
|
|
|
gboolean
|
|
_gtk_cell_accessible_add_state (GtkCellAccessible *cell,
|
|
AtkStateType state_type,
|
|
gboolean emit_signal)
|
|
{
|
|
gboolean rc;
|
|
AtkObject *parent;
|
|
|
|
if (atk_state_set_contains_state (cell->state_set, state_type))
|
|
return FALSE;
|
|
|
|
rc = atk_state_set_add_state (cell->state_set, state_type);
|
|
|
|
/* The signal should only be generated if the value changed,
|
|
* not when the cell is set up. So states that are set
|
|
* initially should pass FALSE as the emit_signal argument.
|
|
*/
|
|
if (emit_signal)
|
|
{
|
|
atk_object_notify_state_change (ATK_OBJECT (cell), state_type, TRUE);
|
|
/* If state_type is ATK_STATE_VISIBLE, additional notification */
|
|
if (state_type == ATK_STATE_VISIBLE)
|
|
g_signal_emit_by_name (cell, "visible-data-changed");
|
|
}
|
|
|
|
/* If the parent is a flyweight container cell, propagate the state
|
|
* change to it also
|
|
*/
|
|
parent = atk_object_get_parent (ATK_OBJECT (cell));
|
|
if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
|
|
_gtk_cell_accessible_add_state (GTK_CELL_ACCESSIBLE (parent), state_type, emit_signal);
|
|
|
|
return rc;
|
|
}
|
|
|
|
gboolean
|
|
_gtk_cell_accessible_remove_state (GtkCellAccessible *cell,
|
|
AtkStateType state_type,
|
|
gboolean emit_signal)
|
|
{
|
|
gboolean rc;
|
|
AtkObject *parent;
|
|
|
|
if (!atk_state_set_contains_state (cell->state_set, state_type))
|
|
return FALSE;
|
|
|
|
parent = atk_object_get_parent (ATK_OBJECT (cell));
|
|
|
|
rc = atk_state_set_remove_state (cell->state_set, state_type);
|
|
|
|
/* The signal should only be generated if the value changed,
|
|
* not when the cell is set up. So states that are set
|
|
* initially should pass FALSE as the emit_signal argument.
|
|
*/
|
|
if (emit_signal)
|
|
{
|
|
atk_object_notify_state_change (ATK_OBJECT (cell), state_type, FALSE);
|
|
/* If state_type is ATK_STATE_VISIBLE, additional notification */
|
|
if (state_type == ATK_STATE_VISIBLE)
|
|
g_signal_emit_by_name (cell, "visible-data-changed");
|
|
}
|
|
|
|
/* If the parent is a flyweight container cell, propagate the state
|
|
* change to it also
|
|
*/
|
|
if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
|
|
_gtk_cell_accessible_remove_state (GTK_CELL_ACCESSIBLE (parent), state_type, emit_signal);
|
|
|
|
return rc;
|
|
}
|
|
|
|
gboolean
|
|
_gtk_cell_accessible_add_action (GtkCellAccessible *cell,
|
|
const gchar *name,
|
|
const gchar *description,
|
|
const gchar *keybinding,
|
|
void (*func) (GtkCellAccessible *))
|
|
{
|
|
ActionInfo *info;
|
|
|
|
info = g_new (ActionInfo, 1);
|
|
info->name = g_strdup (name);
|
|
info->description = g_strdup (description);
|
|
info->keybinding = g_strdup (keybinding);
|
|
info->do_action_func = func;
|
|
|
|
cell->action_list = g_list_append (cell->action_list, info);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
_gtk_cell_accessible_remove_action (GtkCellAccessible *cell,
|
|
gint index)
|
|
{
|
|
GList *l;
|
|
|
|
l = g_list_nth (cell->action_list, index);
|
|
if (l == NULL)
|
|
return FALSE;
|
|
|
|
destroy_action_info (l->data);
|
|
cell->action_list = g_list_remove_link (cell->action_list, l);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
gboolean
|
|
_gtk_cell_accessible_remove_action_by_name (GtkCellAccessible *cell,
|
|
const gchar *name)
|
|
{
|
|
GList *l;
|
|
|
|
for (l = cell->action_list; l; l = l->next)
|
|
{
|
|
ActionInfo *info = l->data;
|
|
|
|
if (g_strcmp0 (info->name, name) == 0)
|
|
break;
|
|
}
|
|
|
|
if (l == NULL)
|
|
return FALSE;
|
|
|
|
destroy_action_info (l->data);
|
|
cell->action_list = g_list_remove_link (cell->action_list, l);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static ActionInfo *
|
|
get_action_info (GtkCellAccessible *cell,
|
|
gint index)
|
|
{
|
|
GList *l;
|
|
|
|
l = g_list_nth (cell->action_list, index);
|
|
if (l == NULL)
|
|
return NULL;
|
|
|
|
return (ActionInfo *) (l->data);
|
|
}
|
|
|
|
static gint
|
|
gtk_cell_accessible_action_get_n_actions (AtkAction *action)
|
|
{
|
|
GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE(action);
|
|
if (cell->action_list != NULL)
|
|
return g_list_length (cell->action_list);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static const gchar *
|
|
gtk_cell_accessible_action_get_name (AtkAction *action,
|
|
gint index)
|
|
{
|
|
GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
|
|
ActionInfo *info;
|
|
|
|
info = get_action_info (cell, index);
|
|
if (info == NULL)
|
|
return NULL;
|
|
|
|
return info->name;
|
|
}
|
|
|
|
static const gchar *
|
|
gtk_cell_accessible_action_get_description (AtkAction *action,
|
|
gint index)
|
|
{
|
|
GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
|
|
ActionInfo *info;
|
|
|
|
info = get_action_info (cell, index);
|
|
if (info == NULL)
|
|
return NULL;
|
|
|
|
return info->description;
|
|
}
|
|
|
|
static const gchar *
|
|
gtk_cell_accessible_action_get_keybinding (AtkAction *action,
|
|
gint index)
|
|
{
|
|
GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
|
|
ActionInfo *info;
|
|
|
|
info = get_action_info (cell, index);
|
|
if (info == NULL)
|
|
return NULL;
|
|
|
|
return info->keybinding;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_cell_accessible_action_do_action (AtkAction *action,
|
|
gint index)
|
|
{
|
|
GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
|
|
ActionInfo *info;
|
|
|
|
info = get_action_info (cell, index);
|
|
if (info == NULL)
|
|
return FALSE;
|
|
|
|
if (info->do_action_func == NULL)
|
|
return FALSE;
|
|
|
|
info->do_action_func (cell);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
atk_action_interface_init (AtkActionIface *iface)
|
|
{
|
|
iface->get_n_actions = gtk_cell_accessible_action_get_n_actions;
|
|
iface->do_action = gtk_cell_accessible_action_do_action;
|
|
iface->get_name = gtk_cell_accessible_action_get_name;
|
|
iface->get_description = gtk_cell_accessible_action_get_description;
|
|
iface->get_keybinding = gtk_cell_accessible_action_get_keybinding;
|
|
}
|
|
|
|
static void
|
|
gtk_cell_accessible_get_extents (AtkComponent *component,
|
|
gint *x,
|
|
gint *y,
|
|
gint *width,
|
|
gint *height,
|
|
AtkCoordType coord_type)
|
|
{
|
|
GtkCellAccessible *cell;
|
|
AtkObject *parent;
|
|
|
|
cell = GTK_CELL_ACCESSIBLE (component);
|
|
parent = gtk_widget_get_accessible (cell->widget);
|
|
|
|
_gtk_cell_accessible_parent_get_cell_extents (GTK_CELL_ACCESSIBLE_PARENT (parent),
|
|
cell,
|
|
x, y, width, height, coord_type);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_cell_accessible_grab_focus (AtkComponent *component)
|
|
{
|
|
GtkCellAccessible *cell;
|
|
AtkObject *parent;
|
|
|
|
cell = GTK_CELL_ACCESSIBLE (component);
|
|
parent = gtk_widget_get_accessible (cell->widget);
|
|
|
|
return _gtk_cell_accessible_parent_grab_focus (GTK_CELL_ACCESSIBLE_PARENT (parent), cell);
|
|
}
|
|
|
|
static void
|
|
atk_component_interface_init (AtkComponentIface *iface)
|
|
{
|
|
iface->get_extents = gtk_cell_accessible_get_extents;
|
|
iface->grab_focus = gtk_cell_accessible_grab_focus;
|
|
}
|