static gchar*
gail_label_get_text (AtkText *text,
gint start_pos,
gint end_pos)
{
GtkWidget *widget;
GtkLabel *label;
const gchar *label_text;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
label = GTK_LABEL (widget);
label_text = gtk_label_get_text (label);
if (label_text == NULL)
return NULL;
else
{
if (GAIL_LABEL (text)->textutil == NULL)
gail_label_init_text_util (GAIL_LABEL (text), widget);
return gail_text_util_get_substring (GAIL_LABEL(text)->textutil,
start_pos, end_pos);
}
}
static gchar*
gail_label_get_selection (AtkText *text,
gint selection_num,
gint *start_pos,
gint *end_pos)
{
GtkWidget *widget;
GtkLabel *label;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
label = GTK_LABEL (widget);
/* Only let the user get the selection if one is set, and if the
* selection_num is 0.
*/
if (!gtk_label_get_selectable( label) || selection_num != 0)
return NULL;
if (gtk_label_get_selection_bounds (label, start_pos, end_pos))
{
const gchar* label_text = gtk_label_get_text (label);
if (label_text == NULL)
return 0;
else
return gail_text_util_get_substring (GAIL_LABEL (text)->textutil,
*start_pos, *end_pos);
}
else
return NULL;
}
static gchar*
gail_label_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkLabel *label;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
{
/* State is defunct */
return NULL;
}
/* Get label */
label = GTK_LABEL (widget);
return gail_text_util_get_text (GAIL_LABEL (text)->textutil,
gtk_label_get_layout (label), GAIL_AFTER_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static void
window_created (GObject *obj,
gpointer data)
{
g_return_if_fail (GAIL_LABEL (data));
notify_name_change (ATK_OBJECT (data));
}
static void
gail_label_finalize (GObject *object)
{
GailLabel *label = GAIL_LABEL (object);
if (label->textutil)
g_object_unref (label->textutil);
G_OBJECT_CLASS (gail_label_parent_class)->finalize (object);
}
static void
gail_label_map_gtk (GtkWidget *widget,
gpointer data)
{
GailLabel *gail_label;
gail_label = GAIL_LABEL (data);
gail_label_init_text_util (gail_label, widget);
}
static void
gail_label_real_initialize (AtkObject *obj,
gpointer data)
{
GtkWidget *widget;
GailLabel *gail_label;
ATK_OBJECT_CLASS (gail_label_parent_class)->initialize (obj, data);
gail_label = GAIL_LABEL (obj);
gail_label->window_create_handler = 0;
gail_label->has_top_level = FALSE;
gail_label->cursor_position = 0;
gail_label->selection_bound = 0;
gail_label->textutil = NULL;
gail_label->label_length = 0;
widget = GTK_WIDGET (data);
if (gtk_widget_get_mapped (widget))
gail_label_init_text_util (gail_label, widget);
else
g_signal_connect (widget,
"map",
G_CALLBACK (gail_label_map_gtk),
gail_label);
/*
* Check whether ancestor of GtkLabel is a GtkButton and if so
* set accessible parent for GailLabel
*/
while (widget != NULL)
{
widget = gtk_widget_get_parent (widget);
if (GTK_IS_BUTTON (widget))
{
atk_object_set_parent (obj, gtk_widget_get_accessible (widget));
break;
}
}
if (GTK_IS_ACCEL_LABEL (widget))
obj->role = ATK_ROLE_ACCEL_LABEL;
else
obj->role = ATK_ROLE_LABEL;
}
static gchar*
gail_label_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkLabel *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
/* Get label */
label = GTK_LABEL (widget);
return gail_text_util_get_text (GAIL_LABEL (text)->textutil,
gtk_label_get_layout (label), GAIL_BEFORE_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gint
gail_label_get_caret_offset (AtkText *text)
{
return GAIL_LABEL (text)->cursor_position;
}
static void
gail_label_real_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
GtkWidget *widget = GTK_WIDGET (obj);
AtkObject* atk_obj = gtk_widget_get_accessible (widget);
GtkLabel *label;
GailLabel *gail_label;
GObject *gail_obj;
AtkObject *top_level;
AtkObject *temp_obj;
gail_label = GAIL_LABEL (atk_obj);
if (strcmp (pspec->name, "label") == 0)
{
/*
* We may get a label change for a label which is not attached to an
* application. We wait until the toplevel window is created before
* emitting the notification.
*
* This happens when [Ctrl+]Alt+Tab is pressed in metacity
*/
if (!gail_label->has_top_level)
{
temp_obj = atk_obj;
top_level = NULL;
while (temp_obj)
{
top_level = temp_obj;
temp_obj = atk_object_get_parent (top_level);
}
if (atk_object_get_role (top_level) != ATK_ROLE_APPLICATION)
{
if (gail_label->window_create_handler == 0 &&
GAIL_IS_WINDOW (top_level))
gail_label->window_create_handler = g_signal_connect_after (top_level, "create", G_CALLBACK (window_created), atk_obj);
}
else
gail_label->has_top_level = TRUE;
}
if (gail_label->has_top_level)
notify_name_change (atk_obj);
}
else if (strcmp (pspec->name, "cursor-position") == 0)
{
gint start, end, tmp;
gboolean text_caret_moved = FALSE;
gboolean selection_changed = FALSE;
gail_obj = G_OBJECT (atk_obj);
label = GTK_LABEL (widget);
if (gail_label->selection_bound != -1 && gail_label->selection_bound < gail_label->cursor_position)
{
tmp = gail_label->selection_bound;
gail_label->selection_bound = gail_label->cursor_position;
gail_label->cursor_position = tmp;
}
if (gtk_label_get_selection_bounds (label, &start, &end))
{
if (start != gail_label->cursor_position ||
end != gail_label->selection_bound)
{
if (end != gail_label->selection_bound)
{
gail_label->selection_bound = start;
gail_label->cursor_position = end;
}
else
{
gail_label->selection_bound = end;
gail_label->cursor_position = start;
}
text_caret_moved = TRUE;
if (start != end)
selection_changed = TRUE;
}
}
else
{
if (gail_label->cursor_position != gail_label->selection_bound)
selection_changed = TRUE;
if (gtk_label_get_selectable (label))
{
if (gail_label->cursor_position != -1 && start != gail_label->cursor_position)
text_caret_moved = TRUE;
if (gail_label->selection_bound != -1 && end != gail_label->selection_bound)
{
text_caret_moved = TRUE;
gail_label->cursor_position = end;
gail_label->selection_bound = start;
}
else
{
gail_label->cursor_position = start;
gail_label->selection_bound = end;
}
}
else
{
/* GtkLabel has become non selectable */
gail_label->cursor_position = 0;
gail_label->selection_bound = 0;
text_caret_moved = TRUE;
}
}
if (text_caret_moved)
g_signal_emit_by_name (gail_obj, "text_caret_moved",
gail_label->cursor_position);
if (selection_changed)
g_signal_emit_by_name (gail_obj, "text_selection_changed");
}
else
GAIL_WIDGET_CLASS (gail_label_parent_class)->notify_gtk (obj, pspec);
}
static void
notify_name_change (AtkObject *atk_obj)
{
GtkLabel *label;
GailLabel *gail_label;
GtkWidget *widget;
GObject *gail_obj;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (atk_obj));
if (widget == NULL)
/*
* State is defunct
*/
return;
gail_obj = G_OBJECT (atk_obj);
label = GTK_LABEL (widget);
gail_label = GAIL_LABEL (atk_obj);
if (gail_label->textutil == NULL)
return;
/*
* Check whether the label has actually changed before emitting
* notification.
*/
if (gail_label->textutil->buffer)
{
GtkTextIter start, end;
const char *new_label;
char *old_label;
int same;
gtk_text_buffer_get_start_iter (gail_label->textutil->buffer, &start);
gtk_text_buffer_get_end_iter (gail_label->textutil->buffer, &end);
old_label = gtk_text_buffer_get_text (gail_label->textutil->buffer, &start, &end, FALSE);
new_label = gtk_label_get_text (label);
same = strcmp (new_label, old_label);
g_free (old_label);
if (same == 0)
return;
}
/* Create a delete text and an insert text signal */
g_signal_emit_by_name (gail_obj, "text_changed::delete", 0,
gail_label->label_length);
gail_label_init_text_util (gail_label, widget);
g_signal_emit_by_name (gail_obj, "text_changed::insert", 0,
gail_label->label_length);
if (atk_obj->name == NULL)
/*
* The label has changed so notify a change in accessible-name
*/
g_object_notify (gail_obj, "accessible-name");
g_signal_emit_by_name (gail_obj, "visible_data_changed");
}
