forked from AuroraMiddleware/gtk
dad727d41c
Move instance fields to a private struct, in preparation for installing a11y headers. This also required removing access to GtkToplevelAccessible innards from the GtkWindowAccessible implementation.
304 lines
8.3 KiB
C
304 lines
8.3 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2001, 2002, 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 <stdlib.h>
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#include <string.h>
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#include <gtk/gtkx.h>
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#include <gtk/gtkeventbox.h>
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#include <gtk/gtkscrolledwindow.h>
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#include <gtk/gtkframe.h>
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#include <gtk/gtkmenu.h>
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#include <gtk/gtkmenuitem.h>
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#include <gtk/gtkbutton.h>
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#include "gtktoplevelaccessible.h"
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struct _GtkToplevelAccessiblePrivate
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{
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GList *window_list;
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};
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G_DEFINE_TYPE (GtkToplevelAccessible, _gtk_toplevel_accessible, ATK_TYPE_OBJECT)
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static void
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gtk_toplevel_accessible_initialize (AtkObject *accessible,
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gpointer data)
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{
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ATK_OBJECT_CLASS (_gtk_toplevel_accessible_parent_class)->initialize (accessible, data);
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accessible->role = ATK_ROLE_APPLICATION;
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accessible->name = g_get_prgname ();
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accessible->accessible_parent = NULL;
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}
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static void
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gtk_toplevel_accessible_object_finalize (GObject *obj)
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{
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GtkToplevelAccessible *toplevel = GTK_TOPLEVEL_ACCESSIBLE (obj);
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if (toplevel->priv->window_list)
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g_list_free (toplevel->priv->window_list);
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G_OBJECT_CLASS (_gtk_toplevel_accessible_parent_class)->finalize (obj);
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}
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static gint
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gtk_toplevel_accessible_get_n_children (AtkObject *obj)
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{
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GtkToplevelAccessible *toplevel = GTK_TOPLEVEL_ACCESSIBLE (obj);
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return g_list_length (toplevel->priv->window_list);
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}
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static AtkObject *
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gtk_toplevel_accessible_ref_child (AtkObject *obj,
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gint i)
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{
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GtkToplevelAccessible *toplevel;
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GtkWidget *widget;
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AtkObject *atk_obj;
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toplevel = GTK_TOPLEVEL_ACCESSIBLE (obj);
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widget = g_list_nth_data (toplevel->priv->window_list, i);
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if (!widget)
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return NULL;
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atk_obj = gtk_widget_get_accessible (widget);
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g_object_ref (atk_obj);
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return atk_obj;
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}
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static gboolean
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is_combo_window (GtkWidget *widget)
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{
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GtkWidget *child;
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AtkObject *obj;
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (!GTK_IS_EVENT_BOX (child))
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return FALSE;
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child = gtk_bin_get_child (GTK_BIN (child));
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if (!GTK_IS_FRAME (child))
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return FALSE;
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child = gtk_bin_get_child (GTK_BIN (child));
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if (!GTK_IS_SCROLLED_WINDOW (child))
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return FALSE;
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obj = gtk_widget_get_accessible (child);
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obj = atk_object_get_parent (obj);
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return FALSE;
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}
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static gboolean
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is_attached_menu_window (GtkWidget *widget)
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{
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GtkWidget *child;
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (GTK_IS_MENU (child))
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{
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GtkWidget *attach;
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attach = gtk_menu_get_attach_widget (GTK_MENU (child));
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/* Allow for menu belonging to the Panel Menu, which is a GtkButton */
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if (GTK_IS_MENU_ITEM (attach) || GTK_IS_BUTTON (attach))
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return TRUE;
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}
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return FALSE;
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}
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static void
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_gtk_toplevel_accessible_class_init (GtkToplevelAccessibleClass *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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class->initialize = gtk_toplevel_accessible_initialize;
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class->get_n_children = gtk_toplevel_accessible_get_n_children;
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class->ref_child = gtk_toplevel_accessible_ref_child;
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class->get_parent = NULL;
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g_object_class->finalize = gtk_toplevel_accessible_object_finalize;
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g_type_class_add_private (klass, sizeof (GtkToplevelAccessiblePrivate));
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}
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static void
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remove_child (GtkToplevelAccessible *toplevel,
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GtkWindow *window)
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{
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AtkObject *atk_obj = ATK_OBJECT (toplevel);
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GList *l;
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guint window_count = 0;
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AtkObject *child;
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if (toplevel->priv->window_list)
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{
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GtkWindow *tmp_window;
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for (l = toplevel->priv->window_list; l; l = l->next)
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{
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tmp_window = GTK_WINDOW (l->data);
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if (window == tmp_window)
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{
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/* Remove the window from the window_list & emit the signal */
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toplevel->priv->window_list = g_list_delete_link (toplevel->priv->window_list, l);
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child = gtk_widget_get_accessible (GTK_WIDGET (window));
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g_signal_emit_by_name (atk_obj, "children-changed::remove",
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window_count, child, NULL);
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atk_object_set_parent (child, NULL);
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break;
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}
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window_count++;
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}
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}
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}
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static gboolean
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show_event_watcher (GSignalInvocationHint *ihint,
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guint n_param_values,
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const GValue *param_values,
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gpointer data)
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{
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GtkToplevelAccessible *toplevel = GTK_TOPLEVEL_ACCESSIBLE (data);
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AtkObject *atk_obj = ATK_OBJECT (toplevel);
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GObject *object;
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GtkWidget *widget;
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gint n_children;
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AtkObject *child;
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object = g_value_get_object (param_values + 0);
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if (!GTK_IS_WINDOW (object))
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return TRUE;
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widget = GTK_WIDGET (object);
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if (gtk_widget_get_parent (widget) ||
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is_attached_menu_window (widget) ||
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#ifdef GDK_WINDOWING_X11
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GTK_IS_PLUG (widget) ||
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#endif
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is_combo_window (widget))
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return TRUE;
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child = gtk_widget_get_accessible (widget);
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if (atk_object_get_role (child) == ATK_ROLE_REDUNDANT_OBJECT ||
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atk_object_get_role (child) == ATK_ROLE_TOOL_TIP)
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return TRUE;
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/* Add the window to the list & emit the signal */
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toplevel->priv->window_list = g_list_append (toplevel->priv->window_list, widget);
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n_children = g_list_length (toplevel->priv->window_list);
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atk_object_set_parent (child, atk_obj);
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g_signal_emit_by_name (atk_obj, "children-changed::add",
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n_children - 1, child, NULL);
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g_signal_connect_swapped (G_OBJECT(object), "destroy",
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G_CALLBACK (remove_child), toplevel);
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return TRUE;
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}
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static gboolean
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hide_event_watcher (GSignalInvocationHint *ihint,
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guint n_param_values,
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const GValue *param_values,
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gpointer data)
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{
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GtkToplevelAccessible *toplevel = GTK_TOPLEVEL_ACCESSIBLE (data);
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GObject *object;
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object = g_value_get_object (param_values + 0);
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if (!GTK_IS_WINDOW (object))
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return TRUE;
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remove_child (toplevel, GTK_WINDOW (object));
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return TRUE;
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}
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static void
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_gtk_toplevel_accessible_init (GtkToplevelAccessible *toplevel)
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{
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GtkWindow *window;
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GtkWidget *widget;
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GList *l;
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guint signal_id;
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toplevel->priv = G_TYPE_INSTANCE_GET_PRIVATE (toplevel,
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GTK_TYPE_TOPLEVEL_ACCESSIBLE,
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GtkToplevelAccessiblePrivate);
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l = toplevel->priv->window_list = gtk_window_list_toplevels ();
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while (l)
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{
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window = GTK_WINDOW (l->data);
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widget = GTK_WIDGET (window);
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if (!window ||
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!gtk_widget_get_visible (widget) ||
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is_attached_menu_window (widget) ||
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#ifdef GDK_WINDOWING_X11
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GTK_IS_PLUG (window) ||
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#endif
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gtk_widget_get_parent (GTK_WIDGET (window)))
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{
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GList *temp_l = l->next;
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toplevel->priv->window_list = g_list_delete_link (toplevel->priv->window_list, l);
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l = temp_l;
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}
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else
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{
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g_signal_connect_swapped (G_OBJECT (window), "destroy",
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G_CALLBACK (remove_child), toplevel);
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l = l->next;
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}
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}
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g_type_class_ref (GTK_TYPE_WINDOW);
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signal_id = g_signal_lookup ("show", GTK_TYPE_WINDOW);
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g_signal_add_emission_hook (signal_id, 0,
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show_event_watcher, toplevel, (GDestroyNotify) NULL);
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signal_id = g_signal_lookup ("hide", GTK_TYPE_WINDOW);
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g_signal_add_emission_hook (signal_id, 0,
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hide_event_watcher, toplevel, (GDestroyNotify) NULL);
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}
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GList *
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_gtk_toplevel_accessible_get_children (GtkToplevelAccessible *accessible)
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{
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return accessible->priv->window_list;
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}
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