425 lines
12 KiB
C
425 lines
12 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2001 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "gtkcontainercellaccessible.h"
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#include "gtkcellaccessible.h"
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#include "gtkcellaccessibleparent.h"
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typedef struct _ActionInfo ActionInfo;
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struct _ActionInfo {
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gchar *name;
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gchar *description;
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gchar *keybinding;
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void (*do_action_func) (GtkCellAccessible *cell);
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};
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static void atk_action_interface_init (AtkActionIface *iface);
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static void atk_component_interface_init (AtkComponentIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkCellAccessible, _gtk_cell_accessible, ATK_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
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G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, atk_component_interface_init))
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static void
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destroy_action_info (gpointer action_info)
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{
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ActionInfo *info = (ActionInfo *)action_info;
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g_free (info->name);
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g_free (info->description);
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g_free (info->keybinding);
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g_free (info);
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}
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static void
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gtk_cell_accessible_object_finalize (GObject *obj)
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{
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GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (obj);
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AtkRelationSet *relation_set;
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AtkRelation *relation;
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GPtrArray *target;
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gpointer target_object;
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gint i;
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if (cell->state_set)
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g_object_unref (cell->state_set);
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if (cell->action_list)
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g_list_free_full (cell->action_list, destroy_action_info);
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relation_set = atk_object_ref_relation_set (ATK_OBJECT (obj));
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if (ATK_IS_RELATION_SET (relation_set))
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{
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relation = atk_relation_set_get_relation_by_type (relation_set,
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ATK_RELATION_NODE_CHILD_OF);
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if (relation)
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{
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target = atk_relation_get_target (relation);
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for (i = 0; i < target->len; i++)
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{
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target_object = g_ptr_array_index (target, i);
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if (GTK_IS_CELL_ACCESSIBLE (target_object))
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g_object_unref (target_object);
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}
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}
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g_object_unref (relation_set);
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}
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G_OBJECT_CLASS (_gtk_cell_accessible_parent_class)->finalize (obj);
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}
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static gint
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gtk_cell_accessible_get_index_in_parent (AtkObject *obj)
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{
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GtkCellAccessible *cell;
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cell = GTK_CELL_ACCESSIBLE (obj);
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if (atk_state_set_contains_state (cell->state_set, ATK_STATE_STALE) &&
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cell->refresh_index != NULL)
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{
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cell->refresh_index (cell);
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atk_state_set_remove_state (cell->state_set, ATK_STATE_STALE);
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}
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return cell->index;
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}
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static AtkStateSet *
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gtk_cell_accessible_ref_state_set (AtkObject *obj)
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{
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GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (obj);
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g_object_ref (cell->state_set);
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return cell->state_set;
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}
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static void
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_gtk_cell_accessible_class_init (GtkCellAccessibleClass *klass)
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{
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
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g_object_class->finalize = gtk_cell_accessible_object_finalize;
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class->get_index_in_parent = gtk_cell_accessible_get_index_in_parent;
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class->ref_state_set = gtk_cell_accessible_ref_state_set;
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}
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static void
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_gtk_cell_accessible_init (GtkCellAccessible *cell)
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{
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cell->widget = NULL;
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cell->action_list = NULL;
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cell->index = 0;
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cell->refresh_index = NULL;
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cell->state_set = atk_state_set_new ();
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atk_state_set_add_state (cell->state_set, ATK_STATE_TRANSIENT);
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atk_state_set_add_state (cell->state_set, ATK_STATE_ENABLED);
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atk_state_set_add_state (cell->state_set, ATK_STATE_SENSITIVE);
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atk_state_set_add_state (cell->state_set, ATK_STATE_SELECTABLE);
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}
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static void
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widget_destroyed (GtkWidget *widget,
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GtkCellAccessible *cell)
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{
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cell->widget = NULL;
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}
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void
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_gtk_cell_accessible_initialise (GtkCellAccessible *cell,
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GtkWidget *widget,
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AtkObject *parent,
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gint index)
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{
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cell->widget = widget;
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atk_object_set_parent (ATK_OBJECT (cell), parent);
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cell->index = index;
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g_signal_connect_object (G_OBJECT (widget), "destroy",
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G_CALLBACK (widget_destroyed), cell, 0);
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}
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gboolean
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_gtk_cell_accessible_add_state (GtkCellAccessible *cell,
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AtkStateType state_type,
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gboolean emit_signal)
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{
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gboolean rc;
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AtkObject *parent;
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if (atk_state_set_contains_state (cell->state_set, state_type))
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return FALSE;
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rc = atk_state_set_add_state (cell->state_set, state_type);
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/* The signal should only be generated if the value changed,
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* not when the cell is set up. So states that are set
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* initially should pass FALSE as the emit_signal argument.
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*/
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if (emit_signal)
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{
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atk_object_notify_state_change (ATK_OBJECT (cell), state_type, TRUE);
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/* If state_type is ATK_STATE_VISIBLE, additional notification */
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if (state_type == ATK_STATE_VISIBLE)
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g_signal_emit_by_name (cell, "visible_data_changed");
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}
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/* If the parent is a flyweight container cell, propagate the state
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* change to it also
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*/
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parent = atk_object_get_parent (ATK_OBJECT (cell));
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if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
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_gtk_cell_accessible_add_state (GTK_CELL_ACCESSIBLE (parent), state_type, emit_signal);
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return rc;
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}
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gboolean
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_gtk_cell_accessible_remove_state (GtkCellAccessible *cell,
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AtkStateType state_type,
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gboolean emit_signal)
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{
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gboolean rc;
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AtkObject *parent;
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if (!atk_state_set_contains_state (cell->state_set, state_type))
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return FALSE;
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parent = atk_object_get_parent (ATK_OBJECT (cell));
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rc = atk_state_set_remove_state (cell->state_set, state_type);
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/* The signal should only be generated if the value changed,
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* not when the cell is set up. So states that are set
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* initially should pass FALSE as the emit_signal argument.
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*/
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if (emit_signal)
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{
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atk_object_notify_state_change (ATK_OBJECT (cell), state_type, FALSE);
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/* If state_type is ATK_STATE_VISIBLE, additional notification */
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if (state_type == ATK_STATE_VISIBLE)
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g_signal_emit_by_name (cell, "visible_data_changed");
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}
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/* If the parent is a flyweight container cell, propagate the state
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* change to it also
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*/
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if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))
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_gtk_cell_accessible_remove_state (GTK_CELL_ACCESSIBLE (parent), state_type, emit_signal);
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return rc;
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}
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gboolean
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_gtk_cell_accessible_add_action (GtkCellAccessible *cell,
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const gchar *name,
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const gchar *description,
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const gchar *keybinding,
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void (*func) (GtkCellAccessible *))
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{
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ActionInfo *info;
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info = g_new (ActionInfo, 1);
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info->name = g_strdup (name);
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info->description = g_strdup (description);
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info->keybinding = g_strdup (keybinding);
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info->do_action_func = func;
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cell->action_list = g_list_append (cell->action_list, info);
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return TRUE;
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}
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gboolean
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_gtk_cell_accessible_remove_action (GtkCellAccessible *cell,
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gint index)
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{
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GList *l;
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l = g_list_nth (cell->action_list, index);
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if (l == NULL)
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return FALSE;
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destroy_action_info (l->data);
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cell->action_list = g_list_remove_link (cell->action_list, l);
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return TRUE;
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}
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gboolean
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_gtk_cell_accessible_remove_action_by_name (GtkCellAccessible *cell,
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const gchar *name)
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{
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GList *l;
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for (l = cell->action_list; l; l = l->next)
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{
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ActionInfo *info = l->data;
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if (g_strcmp0 (info->name, name) == 0)
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break;
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}
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if (l == NULL)
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return FALSE;
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destroy_action_info (l->data);
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cell->action_list = g_list_remove_link (cell->action_list, l);
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return TRUE;
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}
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static ActionInfo *
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get_action_info (GtkCellAccessible *cell,
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gint index)
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{
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GList *l;
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l = g_list_nth (cell->action_list, index);
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if (l == NULL)
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return NULL;
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return (ActionInfo *) (l->data);
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}
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static gint
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gtk_cell_accessible_action_get_n_actions (AtkAction *action)
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{
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GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE(action);
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if (cell->action_list != NULL)
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return g_list_length (cell->action_list);
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else
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return 0;
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}
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static const gchar *
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gtk_cell_accessible_action_get_name (AtkAction *action,
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gint index)
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{
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GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
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ActionInfo *info;
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info = get_action_info (cell, index);
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if (info == NULL)
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return NULL;
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return info->name;
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}
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static const gchar *
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gtk_cell_accessible_action_get_description (AtkAction *action,
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gint index)
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{
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GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
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ActionInfo *info;
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info = get_action_info (cell, index);
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if (info == NULL)
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return NULL;
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return info->description;
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}
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static const gchar *
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gtk_cell_accessible_action_get_keybinding (AtkAction *action,
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gint index)
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{
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GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
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ActionInfo *info;
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info = get_action_info (cell, index);
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if (info == NULL)
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return NULL;
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return info->keybinding;
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}
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static gboolean
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gtk_cell_accessible_action_do_action (AtkAction *action,
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gint index)
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{
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GtkCellAccessible *cell = GTK_CELL_ACCESSIBLE (action);
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ActionInfo *info;
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info = get_action_info (cell, index);
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if (info == NULL)
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return FALSE;
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if (info->do_action_func == NULL)
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return FALSE;
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info->do_action_func (cell);
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return TRUE;
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}
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static void
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atk_action_interface_init (AtkActionIface *iface)
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{
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iface->get_n_actions = gtk_cell_accessible_action_get_n_actions;
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iface->do_action = gtk_cell_accessible_action_do_action;
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iface->get_name = gtk_cell_accessible_action_get_name;
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iface->get_description = gtk_cell_accessible_action_get_description;
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iface->get_keybinding = gtk_cell_accessible_action_get_keybinding;
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}
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static void
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gtk_cell_accessible_get_extents (AtkComponent *component,
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gint *x,
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gint *y,
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gint *width,
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gint *height,
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AtkCoordType coord_type)
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{
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GtkCellAccessible *cell;
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AtkObject *parent;
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cell = GTK_CELL_ACCESSIBLE (component);
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parent = gtk_widget_get_accessible (cell->widget);
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_gtk_cell_accessible_parent_get_cell_extents (GTK_CELL_ACCESSIBLE_PARENT (parent),
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cell,
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x, y, width, height, coord_type);
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}
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static gboolean
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gtk_cell_accessible_grab_focus (AtkComponent *component)
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{
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GtkCellAccessible *cell;
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AtkObject *parent;
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cell = GTK_CELL_ACCESSIBLE (component);
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parent = gtk_widget_get_accessible (cell->widget);
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return _gtk_cell_accessible_parent_grab_focus (GTK_CELL_ACCESSIBLE_PARENT (parent), cell);
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}
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static void
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atk_component_interface_init (AtkComponentIface *iface)
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{
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iface->get_extents = gtk_cell_accessible_get_extents;
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iface->grab_focus = gtk_cell_accessible_grab_focus;
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}
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