forked from AuroraMiddleware/gtk
488 lines
14 KiB
C
488 lines
14 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 <string.h>
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#include <stdlib.h>
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#include <gtk/gtk.h>
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#include "gailcontainercell.h"
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#include "gailcell.h"
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#include "gailcellparent.h"
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static void gail_cell_class_init (GailCellClass *klass);
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static void gail_cell_destroyed (GtkWidget *widget,
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GailCell *cell);
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static void gail_cell_init (GailCell *cell);
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static void gail_cell_object_finalize (GObject *cell);
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static AtkStateSet* gail_cell_ref_state_set (AtkObject *obj);
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static gint gail_cell_get_index_in_parent (AtkObject *obj);
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/* AtkAction */
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static void atk_action_interface_init
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(AtkActionIface *iface);
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static ActionInfo * _gail_cell_get_action_info (GailCell *cell,
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gint index);
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static void _gail_cell_destroy_action_info
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(gpointer data,
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gpointer user_data);
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static gint gail_cell_action_get_n_actions
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(AtkAction *action);
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static const gchar*
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gail_cell_action_get_name (AtkAction *action,
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gint index);
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static const gchar *
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gail_cell_action_get_description
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(AtkAction *action,
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gint index);
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static const gchar *
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gail_cell_action_get_keybinding
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(AtkAction *action,
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gint index);
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static gboolean gail_cell_action_do_action (AtkAction *action,
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gint index);
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static void atk_component_interface_init (AtkComponentIface *iface);
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static void gail_cell_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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static gboolean gail_cell_grab_focus (AtkComponent *component);
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G_DEFINE_TYPE_WITH_CODE (GailCell, gail_cell, 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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gail_cell_class_init (GailCellClass *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 = gail_cell_object_finalize;
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class->get_index_in_parent = gail_cell_get_index_in_parent;
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class->ref_state_set = gail_cell_ref_state_set;
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}
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void
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gail_cell_initialise (GailCell *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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g_return_if_fail (GAIL_IS_CELL (cell));
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g_return_if_fail (GTK_IS_WIDGET (widget));
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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),
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"destroy",
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G_CALLBACK (gail_cell_destroyed ),
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cell, 0);
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}
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static void
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gail_cell_destroyed (GtkWidget *widget,
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GailCell *cell)
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{
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/*
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* This is the signal handler for the "destroy" signal for the
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* GtkWidget. We set the pointer location to NULL;
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*/
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cell->widget = NULL;
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}
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static void
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gail_cell_init (GailCell *cell)
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{
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cell->state_set = atk_state_set_new ();
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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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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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cell->refresh_index = NULL;
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}
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static void
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gail_cell_object_finalize (GObject *obj)
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{
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GailCell *cell = GAIL_CELL (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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{
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g_list_foreach (cell->action_list, _gail_cell_destroy_action_info, NULL);
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g_list_free (cell->action_list);
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}
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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 (GAIL_IS_CELL (target_object))
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{
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g_object_unref (target_object);
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}
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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 (gail_cell_parent_class)->finalize (obj);
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}
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static AtkStateSet *
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gail_cell_ref_state_set (AtkObject *obj)
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{
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GailCell *cell = GAIL_CELL (obj);
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g_assert (cell->state_set);
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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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gboolean
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gail_cell_add_state (GailCell *cell,
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AtkStateType state_type,
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gboolean emit_signal)
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{
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if (!atk_state_set_contains_state (cell->state_set, state_type))
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{
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gboolean rc;
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AtkObject *parent;
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rc = atk_state_set_add_state (cell->state_set, state_type);
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/*
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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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/*
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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 (GAIL_IS_CONTAINER_CELL (parent))
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gail_cell_add_state (GAIL_CELL (parent), state_type, emit_signal);
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return rc;
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}
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else
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return FALSE;
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}
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gboolean
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gail_cell_remove_state (GailCell *cell,
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AtkStateType state_type,
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gboolean emit_signal)
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{
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if (atk_state_set_contains_state (cell->state_set, state_type))
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{
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gboolean rc;
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AtkObject *parent;
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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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/*
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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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/*
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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 (GAIL_IS_CONTAINER_CELL (parent))
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gail_cell_remove_state (GAIL_CELL (parent), state_type, emit_signal);
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return rc;
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}
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else
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return FALSE;
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}
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static gint
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gail_cell_get_index_in_parent (AtkObject *obj)
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{
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GailCell *cell;
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g_assert (GAIL_IS_CELL (obj));
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cell = GAIL_CELL (obj);
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if (atk_state_set_contains_state (cell->state_set, ATK_STATE_STALE))
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if (cell->refresh_index)
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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 void
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atk_action_interface_init (AtkActionIface *iface)
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{
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iface->get_n_actions = gail_cell_action_get_n_actions;
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iface->do_action = gail_cell_action_do_action;
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iface->get_name = gail_cell_action_get_name;
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iface->get_description = gail_cell_action_get_description;
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iface->get_keybinding = gail_cell_action_get_keybinding;
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}
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gboolean
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gail_cell_add_action (GailCell *cell,
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const gchar *action_name,
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const gchar *action_description,
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const gchar *action_keybinding,
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ACTION_FUNC action_func)
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{
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ActionInfo *info;
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g_return_val_if_fail (GAIL_IS_CELL (cell), FALSE);
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info = g_new (ActionInfo, 1);
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if (action_name != NULL)
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info->name = g_strdup (action_name);
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else
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info->name = NULL;
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if (action_description != NULL)
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info->description = g_strdup (action_description);
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else
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info->description = NULL;
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if (action_keybinding != NULL)
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info->keybinding = g_strdup (action_keybinding);
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else
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info->keybinding = NULL;
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info->do_action_func = action_func;
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cell->action_list = g_list_append (cell->action_list, (gpointer) info);
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return TRUE;
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}
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gboolean
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gail_cell_remove_action (GailCell *cell,
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gint action_index)
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{
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GList *list_node;
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g_return_val_if_fail (GAIL_IS_CELL (cell), FALSE);
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list_node = g_list_nth (cell->action_list, action_index);
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if (!list_node)
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return FALSE;
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_gail_cell_destroy_action_info (list_node->data, NULL);
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cell->action_list = g_list_remove_link (cell->action_list, list_node);
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return TRUE;
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}
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gboolean
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gail_cell_remove_action_by_name (GailCell *cell,
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const gchar *action_name)
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{
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GList *list_node;
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gboolean action_found= FALSE;
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g_return_val_if_fail (GAIL_IS_CELL (cell), FALSE);
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for (list_node = cell->action_list; list_node && !action_found;
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list_node = list_node->next)
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{
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if (!strcmp (((ActionInfo *)(list_node->data))->name, action_name))
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{
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action_found = TRUE;
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break;
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}
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}
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if (!action_found)
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return FALSE;
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_gail_cell_destroy_action_info (list_node->data, NULL);
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cell->action_list = g_list_remove_link (cell->action_list, list_node);
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return TRUE;
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}
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static ActionInfo *
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_gail_cell_get_action_info (GailCell *cell,
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gint index)
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{
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GList *list_node;
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g_return_val_if_fail (GAIL_IS_CELL (cell), NULL);
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if (cell->action_list == NULL)
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return NULL;
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list_node = g_list_nth (cell->action_list, index);
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if (!list_node)
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return NULL;
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return (ActionInfo *) (list_node->data);
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}
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static void
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_gail_cell_destroy_action_info (gpointer action_info,
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gpointer user_data)
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{
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ActionInfo *info = (ActionInfo *)action_info;
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g_assert (info != NULL);
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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 gint
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gail_cell_action_get_n_actions (AtkAction *action)
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{
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GailCell *cell = GAIL_CELL(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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gail_cell_action_get_name (AtkAction *action,
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gint index)
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{
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GailCell *cell = GAIL_CELL(action);
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ActionInfo *info = _gail_cell_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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gail_cell_action_get_description (AtkAction *action,
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gint index)
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{
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GailCell *cell = GAIL_CELL(action);
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ActionInfo *info = _gail_cell_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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gail_cell_action_get_keybinding (AtkAction *action,
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gint index)
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{
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GailCell *cell = GAIL_CELL(action);
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ActionInfo *info = _gail_cell_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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gail_cell_action_do_action (AtkAction *action,
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gint index)
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{
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GailCell *cell = GAIL_CELL(action);
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ActionInfo *info = _gail_cell_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_component_interface_init (AtkComponentIface *iface)
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{
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iface->get_extents = gail_cell_get_extents;
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iface->grab_focus = gail_cell_grab_focus;
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}
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static void
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gail_cell_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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GailCell *gailcell;
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AtkObject *cell_parent;
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g_assert (GAIL_IS_CELL (component));
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gailcell = GAIL_CELL (component);
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cell_parent = gtk_widget_get_accessible (gailcell->widget);
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gail_cell_parent_get_cell_extents (GAIL_CELL_PARENT (cell_parent),
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gailcell, x, y, width, height, coord_type);
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}
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static gboolean
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gail_cell_grab_focus (AtkComponent *component)
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{
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GailCell *gailcell;
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AtkObject *cell_parent;
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g_assert (GAIL_IS_CELL (component));
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gailcell = GAIL_CELL (component);
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cell_parent = gtk_widget_get_accessible (gailcell->widget);
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return gail_cell_parent_grab_focus (GAIL_CELL_PARENT (cell_parent),
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gailcell);
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}
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