/* GAIL - The GNOME Accessibility Implementation Library
+ * Copyright 2011, F123 Consulting & Mais Diferenças
* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
*
* This library is free software; you can redistribute it and/or
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
-#include <string.h>
#include <gtk/gtk.h>
#include "gailutil.h"
#include "gtktoplevelaccessible.h"
#include "gtkwindowaccessible.h"
-
-static guint add_listener (GSignalEmissionHook listener,
- const gchar *object_type,
- const gchar *signal,
- const gchar *hook_data);
-static void do_window_event_initialization (void);
-static gboolean state_event_watcher (GSignalInvocationHint *hint,
- guint n_param_values,
- const GValue *param_values,
- gpointer data);
-static void window_added (AtkObject *atk_obj,
- guint index,
- AtkObject *child);
-static void window_removed (AtkObject *atk_obj,
- guint index,
- AtkObject *child);
-static gboolean window_focus (GtkWidget *widget,
- GdkEventFocus *event);
-static gboolean configure_event_watcher (GSignalInvocationHint *hint,
- guint n_param_values,
- const GValue *param_values,
- gpointer data);
-
-
-static AtkObject* root = NULL;
-static GHashTable *listener_list = NULL;
-static gint listener_idx = 1;
static GSList *key_listener_list = NULL;
-static guint key_snooper_id = 0;
-typedef struct _GailUtilListenerInfo GailUtilListenerInfo;
typedef struct _GailKeyEventInfo GailKeyEventInfo;
-struct _GailUtilListenerInfo
-{
- gint key;
- guint signal_id;
- gulong hook_id;
-};
-
struct _GailKeyEventInfo
{
AtkKeyEventStruct *key_event;
gpointer func_data;
};
-G_DEFINE_TYPE (GailUtil, gail_util, ATK_TYPE_UTIL)
+static gboolean
+state_event_watcher (GSignalInvocationHint *hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data)
+{
+ GObject *object;
+ GtkWidget *widget;
+ AtkObject *atk_obj;
+ AtkObject *parent;
+ GdkEventWindowState *event;
+ gchar *signal_name;
+
+ object = g_value_get_object (param_values + 0);
+ if (!GTK_IS_WINDOW (object))
+ return FALSE;
-static guint
-gail_util_add_global_event_listener (GSignalEmissionHook listener,
- const gchar *event_type)
+ event = g_value_get_boxed (param_values + 1);
+ if (event->type == GDK_WINDOW_STATE)
+ return FALSE;
+ widget = GTK_WIDGET (object);
+
+ if (event->new_window_state & GDK_WINDOW_STATE_MAXIMIZED)
+ signal_name = "maximize";
+ else if (event->new_window_state & GDK_WINDOW_STATE_ICONIFIED)
+ signal_name = "minimize";
+ else if (event->new_window_state == 0)
+ signal_name = "restore";
+ else
+ return TRUE;
+
+ atk_obj = gtk_widget_get_accessible (widget);
+ if (GTK_IS_WINDOW_ACCESSIBLE (atk_obj))
+ {
+ parent = atk_object_get_parent (atk_obj);
+ if (parent == atk_get_root ())
+ g_signal_emit_by_name (atk_obj, signal_name);
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static gboolean
+configure_event_watcher (GSignalInvocationHint *hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data)
{
- guint rc = 0;
- gchar **split_string;
+ GtkAllocation allocation;
+ GObject *object;
+ GtkWidget *widget;
+ AtkObject *atk_obj;
+ AtkObject *parent;
+ GdkEvent *event;
+ gchar *signal_name;
- split_string = g_strsplit (event_type, ":", 3);
+ object = g_value_get_object (param_values + 0);
+ if (!GTK_IS_WINDOW (object))
+ return FALSE;
- if (split_string)
+ event = g_value_get_boxed (param_values + 1);
+ if (event->type != GDK_CONFIGURE)
+ return FALSE;
+ widget = GTK_WIDGET (object);
+ gtk_widget_get_allocation (widget, &allocation);
+ if (allocation.x == ((GdkEventConfigure *)event)->x &&
+ allocation.y == ((GdkEventConfigure *)event)->y &&
+ allocation.width == ((GdkEventConfigure *)event)->width &&
+ allocation.height == ((GdkEventConfigure *)event)->height)
+ return TRUE;
+
+ if (allocation.width != ((GdkEventConfigure *)event)->width ||
+ allocation.height != ((GdkEventConfigure *)event)->height)
+ signal_name = "resize";
+ else
+ signal_name = "move";
+
+ atk_obj = gtk_widget_get_accessible (widget);
+ if (GTK_IS_WINDOW_ACCESSIBLE (atk_obj))
{
- if (!strcmp ("window", split_string[0]))
- {
- static gboolean initialized = FALSE;
-
- if (!initialized)
- {
- do_window_event_initialization ();
- initialized = TRUE;
- }
- rc = add_listener (listener, "GtkWindowAccessible", split_string[1], event_type);
- }
- else
- {
- rc = add_listener (listener, split_string[1], split_string[2], event_type);
- }
+ parent = atk_object_get_parent (atk_obj);
+ if (parent == atk_get_root ())
+ g_signal_emit_by_name (atk_obj, signal_name);
- g_strfreev (split_string);
+ return TRUE;
}
- return rc;
+ return FALSE;
+}
+
+static gboolean
+window_focus (GtkWidget *widget,
+ GdkEventFocus *event)
+{
+ AtkObject *atk_obj;
+
+ g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
+
+ atk_obj = gtk_widget_get_accessible (widget);
+ g_signal_emit_by_name (atk_obj, event->in ? "activate" : "deactivate");
+
+ return FALSE;
}
static void
-gail_util_remove_global_event_listener (guint remove_listener)
+window_added (AtkObject *atk_obj,
+ guint index,
+ AtkObject *child)
{
- if (remove_listener > 0)
- {
- GailUtilListenerInfo *listener_info;
- gint tmp_idx = remove_listener;
-
- listener_info = (GailUtilListenerInfo *)
- g_hash_table_lookup(listener_list, &tmp_idx);
-
- if (listener_info != NULL)
- {
- /* Hook id of 0 and signal id of 0 are invalid */
- if (listener_info->hook_id != 0 && listener_info->signal_id != 0)
- {
- /* Remove the emission hook */
- g_signal_remove_emission_hook(listener_info->signal_id,
- listener_info->hook_id);
-
- /* Remove the element from the hash */
- g_hash_table_remove(listener_list, &tmp_idx);
- }
- else
- {
- g_warning("Invalid listener hook_id %ld or signal_id %d\n",
- listener_info->hook_id, listener_info->signal_id);
- }
- }
- else
- {
- g_warning("No listener with the specified listener id %d",
- remove_listener);
- }
- }
- else
- {
- g_warning("Invalid listener_id %d", remove_listener);
- }
+ GtkWidget *widget;
+
+ if (!GTK_IS_WINDOW_ACCESSIBLE (child))
+ return;
+
+ widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (child));
+ if (!widget)
+ return;
+
+ g_signal_connect (widget, "focus-in-event", (GCallback) window_focus, NULL);
+ g_signal_connect (widget, "focus-out-event", (GCallback) window_focus, NULL);
+ g_signal_emit_by_name (child, "create");
+}
+
+
+static void
+window_removed (AtkObject *atk_obj,
+ guint index,
+ AtkObject *child)
+{
+ GtkWidget *widget;
+ GtkWindow *window;
+
+ if (!GTK_IS_WINDOW_ACCESSIBLE (child))
+ return;
+
+ widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (child));
+ if (!widget)
+ return;
+
+ window = GTK_WINDOW (widget);
+ /*
+ * Deactivate window if it is still focused and we are removing it. This
+ * can happen when a dialog displayed by gok is removed.
+ */
+ if (gtk_window_is_active (window) &&
+ gtk_window_has_toplevel_focus (window))
+ g_signal_emit_by_name (child, "deactivate");
+
+ g_signal_handlers_disconnect_by_func (widget, (gpointer) window_focus, NULL);
+ g_signal_emit_by_name (child, "destroy");
+}
+
+static void
+do_window_event_initialization (void)
+{
+ AtkObject *root;
+
+ g_type_class_ref (GTK_TYPE_WINDOW_ACCESSIBLE);
+ g_signal_add_emission_hook (g_signal_lookup ("window-state-event", GTK_TYPE_WIDGET),
+ 0, state_event_watcher, NULL, (GDestroyNotify) NULL);
+ g_signal_add_emission_hook (g_signal_lookup ("configure-event", GTK_TYPE_WIDGET),
+ 0, configure_event_watcher, NULL, (GDestroyNotify) NULL);
+
+ root = atk_get_root ();
+ g_signal_connect (root, "children-changed::add",
+ (GCallback) window_added, NULL);
+ g_signal_connect (root, "children-changed::remove",
+ (GCallback) window_removed, NULL);
+}
+
+static void
+undo_window_event_initialization (void)
+{
+ AtkObject *root;
+
+ root = atk_get_root ();
+
+ g_signal_handlers_disconnect_by_func (root, (GCallback) window_added, NULL);
+ g_signal_handlers_disconnect_by_func (root, (GCallback) window_removed, NULL);
}
static AtkKeyEventStruct *
guint key;
} KeyEventListener;
-static gint
-gail_key_snooper (GtkWidget *the_widget,
- GdkEventKey *event,
- gpointer data)
+gboolean
+_gail_util_key_snooper (GtkWidget *the_widget,
+ GdkEventKey *event)
{
GSList *l;
AtkKeyEventStruct *atk_event;
static guint key = 0;
KeyEventListener *listener;
- if (key_snooper_id == 0)
- key_snooper_id = gtk_key_snooper_install (gail_key_snooper, NULL);
-
key++;
listener = g_slice_new0 (KeyEventListener);
break;
}
}
-
- if (key_listener_list == NULL)
- {
- gtk_key_snooper_remove (key_snooper_id);
- key_snooper_id = 0;
- }
}
static AtkObject *
gail_util_get_root (void)
{
+ static AtkObject *root = NULL;
+
if (!root)
{
root = g_object_new (GTK_TYPE_TOPLEVEL_ACCESSIBLE, NULL);
return GTK_VERSION;
}
-static guint
-add_listener (GSignalEmissionHook listener,
- const gchar *object_type,
- const gchar *signal,
- const gchar *hook_data)
+void
+_gail_util_uninstall (void)
{
- GType type;
- guint signal_id;
- gint rc = 0;
-
- type = g_type_from_name (object_type);
- if (type)
- {
- signal_id = g_signal_lookup (signal, type);
- if (signal_id > 0)
- {
- GailUtilListenerInfo *listener_info;
-
- rc = listener_idx;
-
- listener_info = g_new (GailUtilListenerInfo, 1);
- listener_info->key = listener_idx;
- listener_info->hook_id =
- g_signal_add_emission_hook (signal_id, 0, listener,
- g_strdup (hook_data),
- (GDestroyNotify) g_free);
- listener_info->signal_id = signal_id;
-
- g_hash_table_insert (listener_list, &(listener_info->key), listener_info);
- listener_idx++;
- }
- else
- {
- g_warning("Invalid signal type %s\n", signal);
- }
- }
- else
- {
- g_warning("Invalid object type %s\n", object_type);
- }
- return rc;
-}
-
-static void
-do_window_event_initialization (void)
-{
- AtkObject *root;
-
- g_type_class_ref (GTK_TYPE_WINDOW_ACCESSIBLE);
- g_signal_add_emission_hook (g_signal_lookup ("window-state-event", GTK_TYPE_WIDGET),
- 0, state_event_watcher, NULL, (GDestroyNotify) NULL);
- g_signal_add_emission_hook (g_signal_lookup ("configure-event", GTK_TYPE_WIDGET),
- 0, configure_event_watcher, NULL, (GDestroyNotify) NULL);
-
- root = atk_get_root ();
- g_signal_connect (root, "children-changed::add",
- (GCallback) window_added, NULL);
- g_signal_connect (root, "children-changed::remove",
- (GCallback) window_removed, NULL);
-}
-
-static gboolean
-state_event_watcher (GSignalInvocationHint *hint,
- guint n_param_values,
- const GValue *param_values,
- gpointer data)
-{
- GObject *object;
- GtkWidget *widget;
- AtkObject *atk_obj;
- AtkObject *parent;
- GdkEventWindowState *event;
- gchar *signal_name;
-
- object = g_value_get_object (param_values + 0);
- if (!GTK_IS_WINDOW (object))
- return FALSE;
-
- event = g_value_get_boxed (param_values + 1);
- if (event->type == GDK_WINDOW_STATE)
- return FALSE;
- widget = GTK_WIDGET (object);
-
- if (event->new_window_state & GDK_WINDOW_STATE_MAXIMIZED)
- signal_name = "maximize";
- else if (event->new_window_state & GDK_WINDOW_STATE_ICONIFIED)
- signal_name = "minimize";
- else if (event->new_window_state == 0)
- signal_name = "restore";
- else
- return TRUE;
-
- atk_obj = gtk_widget_get_accessible (widget);
- if (GTK_IS_WINDOW_ACCESSIBLE (atk_obj))
- {
- parent = atk_object_get_parent (atk_obj);
- if (parent == atk_get_root ())
- g_signal_emit_by_name (atk_obj, signal_name);
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-static void
-window_added (AtkObject *atk_obj,
- guint index,
- AtkObject *child)
-{
- GtkWidget *widget;
-
- if (!GTK_IS_WINDOW_ACCESSIBLE (child))
- return;
-
- widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (child));
- if (!widget)
- return;
-
- g_signal_connect (widget, "focus-in-event", (GCallback) window_focus, NULL);
- g_signal_connect (widget, "focus-out-event", (GCallback) window_focus, NULL);
- g_signal_emit_by_name (child, "create");
-}
-
-
-static void
-window_removed (AtkObject *atk_obj,
- guint index,
- AtkObject *child)
-{
- GtkWidget *widget;
- GtkWindow *window;
-
- if (!GTK_IS_WINDOW_ACCESSIBLE (child))
- return;
-
- widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (child));
- if (!widget)
- return;
-
- window = GTK_WINDOW (widget);
- /*
- * Deactivate window if it is still focused and we are removing it. This
- * can happen when a dialog displayed by gok is removed.
- */
- if (gtk_window_is_active (window) &&
- gtk_window_has_toplevel_focus (window))
- {
- AtkObject *atk_obj;
-
- atk_obj = gtk_widget_get_accessible (widget);
- g_signal_emit_by_name (atk_obj, "deactivate");
- }
-
- g_signal_handlers_disconnect_by_func (widget, (gpointer) window_focus, NULL);
- g_signal_emit_by_name (child, "destroy");
+ undo_window_event_initialization ();
}
-static gboolean
-window_focus (GtkWidget *widget,
- GdkEventFocus *event)
+void
+_gail_util_install (void)
{
- AtkObject *atk_obj;
+ AtkUtilClass *atk_class = ATK_UTIL_CLASS (g_type_class_ref (ATK_TYPE_UTIL));
- g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
-
- atk_obj = gtk_widget_get_accessible (widget);
- g_signal_emit_by_name (atk_obj, event->in ? "activate" : "deactivate");
-
- return FALSE;
-}
-
-static gboolean
-configure_event_watcher (GSignalInvocationHint *hint,
- guint n_param_values,
- const GValue *param_values,
- gpointer data)
-{
- GtkAllocation allocation;
- GObject *object;
- GtkWidget *widget;
- AtkObject *atk_obj;
- AtkObject *parent;
- GdkEvent *event;
- gchar *signal_name;
-
- object = g_value_get_object (param_values + 0);
- if (!GTK_IS_WINDOW (object))
- return FALSE;
-
- event = g_value_get_boxed (param_values + 1);
- if (event->type != GDK_CONFIGURE)
- return FALSE;
- widget = GTK_WIDGET (object);
- gtk_widget_get_allocation (widget, &allocation);
- if (allocation.x == ((GdkEventConfigure *)event)->x &&
- allocation.y == ((GdkEventConfigure *)event)->y &&
- allocation.width == ((GdkEventConfigure *)event)->width &&
- allocation.height == ((GdkEventConfigure *)event)->height)
- return TRUE;
-
- if (allocation.width != ((GdkEventConfigure *)event)->width ||
- allocation.height != ((GdkEventConfigure *)event)->height)
- signal_name = "resize";
- else
- signal_name = "move";
-
- atk_obj = gtk_widget_get_accessible (widget);
- if (GTK_IS_WINDOW_ACCESSIBLE (atk_obj))
- {
- parent = atk_object_get_parent (atk_obj);
- if (parent == atk_get_root ())
- g_signal_emit_by_name (atk_obj, signal_name);
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-static void
-gail_util_class_init (GailUtilClass *klass)
-{
- AtkUtilClass *atk_class = ATK_UTIL_CLASS (klass);
-
- atk_class->add_global_event_listener = gail_util_add_global_event_listener;
- atk_class->remove_global_event_listener = gail_util_remove_global_event_listener;
atk_class->add_key_event_listener = gail_util_add_key_event_listener;
atk_class->remove_key_event_listener = gail_util_remove_key_event_listener;
atk_class->get_root = gail_util_get_root;
atk_class->get_toolkit_name = gail_util_get_toolkit_name;
atk_class->get_toolkit_version = gail_util_get_toolkit_version;
- listener_list = g_hash_table_new_full (g_int_hash, g_int_equal, NULL, g_free);
-}
-
-static void
-gail_util_init (GailUtil *utils)
-{
+ do_window_event_initialization ();
}
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