forked from AuroraMiddleware/gtk
e4b5e94eb9
This commit exposes the get_type() functions and standard headers for accessible implementations. This makes it possible to derive from the GTK accessible implementations without GType magic tricks. This is necessary, because we require the a11y type hierarchy to be parallel to the widget type hierarchy. So, if you derive a widget and need to adjust its a11y implementation, you have to be able to derive its accessible implementation. This commit probably exposes more than is absolutely necessary, it also exposes accessibles of widgets that are unlikely candidates for deriving from.
284 lines
7.6 KiB
C
284 lines
7.6 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2003 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "gtkexpanderaccessible.h"
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static void atk_action_interface_init (AtkActionIface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkExpanderAccessible, gtk_expander_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init))
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static const gchar *
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gtk_expander_accessible_get_full_text (GtkExpander *widget)
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{
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GtkWidget *label_widget;
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label_widget = gtk_expander_get_label_widget (widget);
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if (!GTK_IS_LABEL (label_widget))
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return NULL;
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return gtk_label_get_text (GTK_LABEL (label_widget));
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}
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static const gchar *
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gtk_expander_accessible_get_name (AtkObject *obj)
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{
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GtkWidget *widget;
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const gchar *name;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return NULL;
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name = ATK_OBJECT_CLASS (gtk_expander_accessible_parent_class)->get_name (obj);
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if (name != NULL)
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return name;
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return gtk_expander_accessible_get_full_text (GTK_EXPANDER (widget));
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}
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static gint
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gtk_expander_accessible_get_n_children (AtkObject *obj)
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{
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GtkWidget *widget;
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GList *children;
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gint count = 0;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return 0;
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children = gtk_container_get_children (GTK_CONTAINER(widget));
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count = g_list_length (children);
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g_list_free (children);
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/* See if there is a label - if there is, reduce our count by 1
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* since we don't want the label included with the children.
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*/
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if (gtk_expander_get_label_widget (GTK_EXPANDER (widget)))
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count -= 1;
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return count;
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}
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static AtkObject *
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gtk_expander_accessible_ref_child (AtkObject *obj,
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gint i)
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{
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GList *children, *tmp_list;
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AtkObject *accessible;
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GtkWidget *widget;
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GtkWidget *label;
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gint index;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return NULL;
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children = gtk_container_get_children (GTK_CONTAINER (widget));
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/* See if there is a label - if there is, we need to skip it
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* since we don't want the label included with the children.
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*/
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label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
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if (label)
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{
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for (index = 0; index <= i; index++)
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{
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tmp_list = g_list_nth (children, index);
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if (label == GTK_WIDGET (tmp_list->data))
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{
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i += 1;
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break;
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}
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}
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}
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tmp_list = g_list_nth (children, i);
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if (!tmp_list)
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{
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g_list_free (children);
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return NULL;
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}
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accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data));
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g_list_free (children);
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g_object_ref (accessible);
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return accessible;
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}
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static void
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gtk_expander_accessible_initialize (AtkObject *obj,
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gpointer data)
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{
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ATK_OBJECT_CLASS (gtk_expander_accessible_parent_class)->initialize (obj, data);
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obj->role = ATK_ROLE_TOGGLE_BUTTON;
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}
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static void
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gtk_expander_accessible_notify_gtk (GObject *obj,
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GParamSpec *pspec)
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{
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AtkObject* atk_obj;
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GtkExpander *expander;
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expander = GTK_EXPANDER (obj);
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atk_obj = gtk_widget_get_accessible (GTK_WIDGET (expander));
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;
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if (g_strcmp0 (pspec->name, "label") == 0)
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{
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if (atk_obj->name == NULL)
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g_object_notify (G_OBJECT (atk_obj), "accessible-name");
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g_signal_emit_by_name (atk_obj, "visible-data-changed");
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}
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else if (g_strcmp0 (pspec->name, "expanded") == 0)
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{
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atk_object_notify_state_change (atk_obj, ATK_STATE_CHECKED,
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gtk_expander_get_expanded (expander));
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atk_object_notify_state_change (atk_obj, ATK_STATE_EXPANDED,
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gtk_expander_get_expanded (expander));
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g_signal_emit_by_name (atk_obj, "visible-data-changed");
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}
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else
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GTK_WIDGET_ACCESSIBLE_CLASS (gtk_expander_accessible_parent_class)->notify_gtk (obj, pspec);
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}
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static AtkStateSet *
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gtk_expander_accessible_ref_state_set (AtkObject *obj)
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{
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AtkStateSet *state_set;
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GtkWidget *widget;
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GtkExpander *expander;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
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if (widget == NULL)
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return NULL;
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state_set = ATK_OBJECT_CLASS (gtk_expander_accessible_parent_class)->ref_state_set (obj);
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expander = GTK_EXPANDER (widget);
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atk_state_set_add_state (state_set, ATK_STATE_EXPANDABLE);
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if (gtk_expander_get_expanded (expander))
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{
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atk_state_set_add_state (state_set, ATK_STATE_CHECKED);
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atk_state_set_add_state (state_set, ATK_STATE_EXPANDED);
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}
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return state_set;
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}
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static void
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gtk_expander_accessible_class_init (GtkExpanderAccessibleClass *klass)
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{
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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GtkWidgetAccessibleClass *widget_class = (GtkWidgetAccessibleClass*)klass;
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widget_class->notify_gtk = gtk_expander_accessible_notify_gtk;
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class->get_name = gtk_expander_accessible_get_name;
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class->get_n_children = gtk_expander_accessible_get_n_children;
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class->ref_child = gtk_expander_accessible_ref_child;
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class->ref_state_set = gtk_expander_accessible_ref_state_set;
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class->initialize = gtk_expander_accessible_initialize;
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}
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static void
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gtk_expander_accessible_init (GtkExpanderAccessible *expander)
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{
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}
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static gboolean
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gtk_expander_accessible_do_action (AtkAction *action,
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gint i)
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{
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GtkWidget *widget;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
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if (widget == NULL)
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return FALSE;
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if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_visible (widget))
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return FALSE;
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if (i != 0)
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return FALSE;
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gtk_widget_activate (widget);
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return TRUE;
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}
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static gint
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gtk_expander_accessible_get_n_actions (AtkAction *action)
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{
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return 1;
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}
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static const gchar *
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gtk_expander_accessible_get_keybinding (AtkAction *action,
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gint i)
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{
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gchar *return_value = NULL;
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GtkWidget *widget;
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GtkWidget *label;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
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if (widget == NULL)
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return NULL;
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if (i != 0)
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return NULL;
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label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
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if (GTK_IS_LABEL (label))
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{
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guint key_val;
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key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
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if (key_val != GDK_KEY_VoidSymbol)
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return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
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}
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return return_value;
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}
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static const gchar *
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gtk_expander_accessible_action_get_name (AtkAction *action,
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gint i)
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{
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if (i != 0)
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return NULL;
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return "activate";
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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->do_action = gtk_expander_accessible_do_action;
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iface->get_n_actions = gtk_expander_accessible_get_n_actions;
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iface->get_keybinding = gtk_expander_accessible_get_keybinding;
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iface->get_name = gtk_expander_accessible_action_get_name;
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}
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