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Learning_GTK4_tree/gtk/gtkshortcutsshortcut.c

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/* gtkshortcutsshortcut.c
*
* Copyright (C) 2015 Christian Hergert <christian@hergert.me>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkshortcutsshortcutprivate.h"
#include "gtkimage.h"
#include "gtkbox.h"
#include <glib/gi18n-lib.h>
#include "gtklabel.h"
#include "gtkprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkshortcutlabel.h"
#include "gtkshortcutswindowprivate.h"
#include "gtksizegroup.h"
#include "gtktypebuiltins.h"
/**
* GtkShortcutsShortcut:
*
* A `GtkShortcutsShortcut` represents a single keyboard shortcut or gesture
* with a short text.
*
* This widget is only meant to be used with `GtkShortcutsWindow`.
*/
struct _GtkShortcutsShortcut
{
GtkWidget parent_instance;
GtkBox *box;
GtkImage *image;
GtkShortcutLabel *accelerator;
GtkLabel *title;
GtkLabel *subtitle;
GtkLabel *title_box;
GtkSizeGroup *accel_size_group;
GtkSizeGroup *title_size_group;
gboolean subtitle_set;
gboolean icon_set;
GtkTextDirection direction;
char *action_name;
GtkShortcutType shortcut_type;
};
struct _GtkShortcutsShortcutClass
{
GtkWidgetClass parent_class;
};
G_DEFINE_TYPE (GtkShortcutsShortcut, gtk_shortcuts_shortcut, GTK_TYPE_WIDGET)
enum {
PROP_0,
PROP_ACCELERATOR,
PROP_ICON,
PROP_ICON_SET,
PROP_TITLE,
PROP_SUBTITLE,
PROP_SUBTITLE_SET,
PROP_ACCEL_SIZE_GROUP,
PROP_TITLE_SIZE_GROUP,
PROP_DIRECTION,
PROP_SHORTCUT_TYPE,
PROP_ACTION_NAME,
LAST_PROP
};
static GParamSpec *properties[LAST_PROP];
static void
gtk_shortcuts_shortcut_set_accelerator (GtkShortcutsShortcut *self,
const char *accelerator)
{
gtk_shortcut_label_set_accelerator (self->accelerator, accelerator);
}
static void
gtk_shortcuts_shortcut_set_accel_size_group (GtkShortcutsShortcut *self,
GtkSizeGroup *group)
{
if (self->accel_size_group)
{
gtk_size_group_remove_widget (self->accel_size_group, GTK_WIDGET (self->accelerator));
gtk_size_group_remove_widget (self->accel_size_group, GTK_WIDGET (self->image));
}
if (group)
{
gtk_size_group_add_widget (group, GTK_WIDGET (self->accelerator));
gtk_size_group_add_widget (group, GTK_WIDGET (self->image));
}
g_set_object (&self->accel_size_group, group);
}
static void
gtk_shortcuts_shortcut_set_title_size_group (GtkShortcutsShortcut *self,
GtkSizeGroup *group)
{
if (self->title_size_group)
gtk_size_group_remove_widget (self->title_size_group, GTK_WIDGET (self->title_box));
if (group)
gtk_size_group_add_widget (group, GTK_WIDGET (self->title_box));
g_set_object (&self->title_size_group, group);
}
static void
update_subtitle_from_type (GtkShortcutsShortcut *self)
{
const char *subtitle;
if (self->subtitle_set)
return;
switch (self->shortcut_type)
{
case GTK_SHORTCUT_ACCELERATOR:
case GTK_SHORTCUT_GESTURE:
subtitle = NULL;
break;
case GTK_SHORTCUT_GESTURE_PINCH:
subtitle = _("Two finger pinch");
break;
case GTK_SHORTCUT_GESTURE_STRETCH:
subtitle = _("Two finger stretch");
break;
case GTK_SHORTCUT_GESTURE_ROTATE_CLOCKWISE:
subtitle = _("Rotate clockwise");
break;
case GTK_SHORTCUT_GESTURE_ROTATE_COUNTERCLOCKWISE:
subtitle = _("Rotate counterclockwise");
break;
case GTK_SHORTCUT_GESTURE_TWO_FINGER_SWIPE_LEFT:
subtitle = _("Two finger swipe left");
break;
case GTK_SHORTCUT_GESTURE_TWO_FINGER_SWIPE_RIGHT:
subtitle = _("Two finger swipe right");
break;
case GTK_SHORTCUT_GESTURE_SWIPE_LEFT:
subtitle = _("Swipe left");
break;
case GTK_SHORTCUT_GESTURE_SWIPE_RIGHT:
subtitle = _("Swipe right");
break;
default:
subtitle = NULL;
break;
}
gtk_label_set_label (self->subtitle, subtitle);
gtk_widget_set_visible (GTK_WIDGET (self->subtitle), subtitle != NULL);
g_object_notify (G_OBJECT (self), "subtitle");
}
static void
gtk_shortcuts_shortcut_set_subtitle_set (GtkShortcutsShortcut *self,
gboolean subtitle_set)
{
if (self->subtitle_set != subtitle_set)
{
self->subtitle_set = subtitle_set;
g_object_notify (G_OBJECT (self), "subtitle-set");
}
update_subtitle_from_type (self);
}
static void
gtk_shortcuts_shortcut_set_subtitle (GtkShortcutsShortcut *self,
const char *subtitle)
{
gtk_label_set_label (self->subtitle, subtitle);
gtk_widget_set_visible (GTK_WIDGET (self->subtitle), subtitle && subtitle[0]);
gtk_shortcuts_shortcut_set_subtitle_set (self, subtitle && subtitle[0]);
g_object_notify (G_OBJECT (self), "subtitle");
}
static void
update_icon_from_type (GtkShortcutsShortcut *self)
{
GIcon *icon;
if (self->icon_set)
return;
switch (self->shortcut_type)
{
case GTK_SHORTCUT_GESTURE_PINCH:
icon = g_themed_icon_new ("gesture-pinch-symbolic");
break;
case GTK_SHORTCUT_GESTURE_STRETCH:
icon = g_themed_icon_new ("gesture-stretch-symbolic");
break;
case GTK_SHORTCUT_GESTURE_ROTATE_CLOCKWISE:
icon = g_themed_icon_new ("gesture-rotate-clockwise-symbolic");
break;
case GTK_SHORTCUT_GESTURE_ROTATE_COUNTERCLOCKWISE:
icon = g_themed_icon_new ("gesture-rotate-anticlockwise-symbolic");
break;
case GTK_SHORTCUT_GESTURE_TWO_FINGER_SWIPE_LEFT:
icon = g_themed_icon_new ("gesture-two-finger-swipe-left-symbolic");
break;
case GTK_SHORTCUT_GESTURE_TWO_FINGER_SWIPE_RIGHT:
icon = g_themed_icon_new ("gesture-two-finger-swipe-right-symbolic");
break;
case GTK_SHORTCUT_GESTURE_SWIPE_LEFT:
icon = g_themed_icon_new ("gesture-swipe-left-symbolic");
break;
case GTK_SHORTCUT_GESTURE_SWIPE_RIGHT:
icon = g_themed_icon_new ("gesture-swipe-right-symbolic");
break;
case GTK_SHORTCUT_ACCELERATOR:
case GTK_SHORTCUT_GESTURE:
default:
icon = NULL;
break;
}
if (icon)
{
gtk_image_set_from_gicon (self->image, icon);
gtk_image_set_pixel_size (self->image, 64);
g_object_unref (icon);
}
}
static void
gtk_shortcuts_shortcut_set_icon_set (GtkShortcutsShortcut *self,
gboolean icon_set)
{
if (self->icon_set != icon_set)
{
self->icon_set = icon_set;
g_object_notify (G_OBJECT (self), "icon-set");
}
update_icon_from_type (self);
}
static void
gtk_shortcuts_shortcut_set_icon (GtkShortcutsShortcut *self,
GIcon *gicon)
{
gtk_image_set_from_gicon (self->image, gicon);
gtk_shortcuts_shortcut_set_icon_set (self, gicon != NULL);
g_object_notify (G_OBJECT (self), "icon");
}
static void
update_visible_from_direction (GtkShortcutsShortcut *self)
{
gtk_widget_set_visible (GTK_WIDGET (self),
self->direction == GTK_TEXT_DIR_NONE ||
self->direction == gtk_widget_get_direction (GTK_WIDGET (self)));
}
static void
gtk_shortcuts_shortcut_set_direction (GtkShortcutsShortcut *self,
GtkTextDirection direction)
{
if (self->direction == direction)
return;
self->direction = direction;
update_visible_from_direction (self);
g_object_notify (G_OBJECT (self), "direction");
}
static void
gtk_shortcuts_shortcut_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir)
{
update_visible_from_direction (GTK_SHORTCUTS_SHORTCUT (widget));
GTK_WIDGET_CLASS (gtk_shortcuts_shortcut_parent_class)->direction_changed (widget, previous_dir);
}
static void
gtk_shortcuts_shortcut_set_type (GtkShortcutsShortcut *self,
GtkShortcutType type)
{
if (self->shortcut_type == type)
return;
self->shortcut_type = type;
update_subtitle_from_type (self);
update_icon_from_type (self);
gtk_widget_set_visible (GTK_WIDGET (self->accelerator), type == GTK_SHORTCUT_ACCELERATOR);
gtk_widget_set_visible (GTK_WIDGET (self->image), type != GTK_SHORTCUT_ACCELERATOR);
g_object_notify (G_OBJECT (self), "shortcut-type");
}
static void
gtk_shortcuts_shortcut_set_action_name (GtkShortcutsShortcut *self,
const char *action_name)
{
g_free (self->action_name);
self->action_name = g_strdup (action_name);
g_object_notify (G_OBJECT (self), "action-name");
}
static void
gtk_shortcuts_shortcut_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkShortcutsShortcut *self = GTK_SHORTCUTS_SHORTCUT (object);
switch (prop_id)
{
case PROP_TITLE:
g_value_set_string (value, gtk_label_get_label (self->title));
break;
case PROP_SUBTITLE:
g_value_set_string (value, gtk_label_get_label (self->subtitle));
break;
case PROP_SUBTITLE_SET:
g_value_set_boolean (value, self->subtitle_set);
break;
case PROP_ACCELERATOR:
g_value_set_string (value, gtk_shortcut_label_get_accelerator (self->accelerator));
break;
case PROP_ICON:
g_value_set_object (value, gtk_image_get_gicon (self->image));
break;
case PROP_ICON_SET:
g_value_set_boolean (value, self->icon_set);
break;
case PROP_DIRECTION:
g_value_set_enum (value, self->direction);
break;
case PROP_SHORTCUT_TYPE:
g_value_set_enum (value, self->shortcut_type);
break;
case PROP_ACTION_NAME:
g_value_set_string (value, self->action_name);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_shortcuts_shortcut_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkShortcutsShortcut *self = GTK_SHORTCUTS_SHORTCUT (object);
switch (prop_id)
{
case PROP_ACCELERATOR:
gtk_shortcuts_shortcut_set_accelerator (self, g_value_get_string (value));
break;
case PROP_ICON:
gtk_shortcuts_shortcut_set_icon (self, g_value_get_object (value));
break;
case PROP_ICON_SET:
gtk_shortcuts_shortcut_set_icon_set (self, g_value_get_boolean (value));
break;
case PROP_ACCEL_SIZE_GROUP:
gtk_shortcuts_shortcut_set_accel_size_group (self, GTK_SIZE_GROUP (g_value_get_object (value)));
break;
case PROP_TITLE:
gtk_label_set_label (self->title, g_value_get_string (value));
break;
case PROP_SUBTITLE:
gtk_shortcuts_shortcut_set_subtitle (self, g_value_get_string (value));
break;
case PROP_SUBTITLE_SET:
gtk_shortcuts_shortcut_set_subtitle_set (self, g_value_get_boolean (value));
break;
case PROP_TITLE_SIZE_GROUP:
gtk_shortcuts_shortcut_set_title_size_group (self, GTK_SIZE_GROUP (g_value_get_object (value)));
break;
case PROP_DIRECTION:
gtk_shortcuts_shortcut_set_direction (self, g_value_get_enum (value));
break;
case PROP_SHORTCUT_TYPE:
gtk_shortcuts_shortcut_set_type (self, g_value_get_enum (value));
break;
case PROP_ACTION_NAME:
gtk_shortcuts_shortcut_set_action_name (self, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_shortcuts_shortcut_finalize (GObject *object)
{
GtkShortcutsShortcut *self = GTK_SHORTCUTS_SHORTCUT (object);
g_clear_object (&self->accel_size_group);
g_clear_object (&self->title_size_group);
g_free (self->action_name);
gtk_widget_unparent (GTK_WIDGET (self->box));
G_OBJECT_CLASS (gtk_shortcuts_shortcut_parent_class)->finalize (object);
}
void
gtk_shortcuts_shortcut_update_accel (GtkShortcutsShortcut *self,
GtkWindow *window)
{
GtkApplication *app;
char **accels;
char *str;
if (self->action_name == NULL)
return;
app = gtk_window_get_application (window);
if (app == NULL)
return;
accels = gtk_application_get_accels_for_action (app, self->action_name);
str = g_strjoinv (" ", accels);
gtk_shortcuts_shortcut_set_accelerator (self, str);
g_free (str);
g_strfreev (accels);
}
static void
gtk_shortcuts_shortcut_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
gtk_widget_measure (GTK_WIDGET (GTK_SHORTCUTS_SHORTCUT (widget)->box),
orientation, for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_shortcuts_shortcut_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
gtk_widget_snapshot_child (widget, GTK_WIDGET (GTK_SHORTCUTS_SHORTCUT (widget)->box), snapshot);
}
static void
gtk_shortcuts_shortcut_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GTK_WIDGET_CLASS (gtk_shortcuts_shortcut_parent_class)->size_allocate (widget, width, height, baseline);
gtk_widget_size_allocate (GTK_WIDGET (GTK_SHORTCUTS_SHORTCUT (widget)->box),
&(GtkAllocation) {
0, 0,
width, height
}, -1);
}
static void
gtk_shortcuts_shortcut_class_init (GtkShortcutsShortcutClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->finalize = gtk_shortcuts_shortcut_finalize;
object_class->get_property = gtk_shortcuts_shortcut_get_property;
object_class->set_property = gtk_shortcuts_shortcut_set_property;
widget_class->direction_changed = gtk_shortcuts_shortcut_direction_changed;
widget_class->measure = gtk_shortcuts_shortcut_measure;
widget_class->snapshot = gtk_shortcuts_shortcut_snapshot;
widget_class->size_allocate = gtk_shortcuts_shortcut_size_allocate;
/**
* GtkShortcutsShortcut:accelerator:
*
* The accelerator(s) represented by this object.
*
* This property is used if [property@Gtk.ShortcutsShortcut:shortcut-type]
* is set to %GTK_SHORTCUT_ACCELERATOR.
*
* The syntax of this property is (an extension of) the syntax understood
* by [func@Gtk.accelerator_parse]. Multiple accelerators can be specified
* by separating them with a space, but keep in mind that the available width
* is limited.
*
* It is also possible to specify ranges of shortcuts, using `...` between
* the keys. Sequences of keys can be specified using a `+` or `&` between
* the keys.
*
* Examples:
*
* - A single shortcut: `<ctl><alt>delete`
* - Two alternative shortcuts: `<shift>a Home`
* - A range of shortcuts: `<alt>1...<alt>9`
* - Several keys pressed together: `Control_L&Control_R`
* - A sequence of shortcuts or keys: `<ctl>c+<ctl>x`
*
* Use "+" instead of "&" when the keys may (or have to be) pressed
* sequentially (e.g use "t+t" for 'press the t key twice').
*
* Note that `<`, `>` and `&` need to be escaped as `&lt;`, `&gt`; and `&amp`; when used
* in .ui files.
*/
properties[PROP_ACCELERATOR] =
g_param_spec_string ("accelerator", NULL, NULL,
NULL,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:icon:
*
* An icon to represent the shortcut or gesture.
*
* This property is used if [property@Gtk.ShortcutsShortcut:shortcut-type]
* is set to %GTK_SHORTCUT_GESTURE.
*
* For the other predefined gesture types, GTK provides an icon on its own.
*/
properties[PROP_ICON] =
g_param_spec_object ("icon", NULL, NULL,
G_TYPE_ICON,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:icon-set:
*
* %TRUE if an icon has been set.
*/
properties[PROP_ICON_SET] =
g_param_spec_boolean ("icon-set", NULL, NULL,
FALSE,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:title:
*
* The textual description for the shortcut or gesture represented by
* this object.
*
* This should be a short string that can fit in a single line.
*/
properties[PROP_TITLE] =
g_param_spec_string ("title", NULL, NULL,
"",
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:subtitle:
*
* The subtitle for the shortcut or gesture.
*
* This is typically used for gestures and should be a short, one-line
* text that describes the gesture itself. For the predefined gesture
* types, GTK provides a subtitle on its own.
*/
properties[PROP_SUBTITLE] =
g_param_spec_string ("subtitle", NULL, NULL,
"",
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:subtitle-set:
*
* %TRUE if a subtitle has been set.
*/
properties[PROP_SUBTITLE_SET] =
g_param_spec_boolean ("subtitle-set", NULL, NULL,
FALSE,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:accel-size-group:
*
* The size group for the accelerator portion of this shortcut.
*
* This is used internally by GTK, and must not be modified by applications.
*/
properties[PROP_ACCEL_SIZE_GROUP] =
g_param_spec_object ("accel-size-group", NULL, NULL,
GTK_TYPE_SIZE_GROUP,
(G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:title-size-group:
*
* The size group for the textual portion of this shortcut.
*
* This is used internally by GTK, and must not be modified by applications.
*/
properties[PROP_TITLE_SIZE_GROUP] =
g_param_spec_object ("title-size-group", NULL, NULL,
GTK_TYPE_SIZE_GROUP,
(G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
/**
* GtkShortcutsShortcut:direction:
*
* The text direction for which this shortcut is active.
*
* If the shortcut is used regardless of the text direction,
* set this property to %GTK_TEXT_DIR_NONE.
*/
properties[PROP_DIRECTION] =
g_param_spec_enum ("direction", NULL, NULL,
GTK_TYPE_TEXT_DIRECTION,
GTK_TEXT_DIR_NONE,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkShortcutsShortcut:shortcut-type:
*
* The type of shortcut that is represented.
*/
properties[PROP_SHORTCUT_TYPE] =
g_param_spec_enum ("shortcut-type", NULL, NULL,
GTK_TYPE_SHORTCUT_TYPE,
GTK_SHORTCUT_ACCELERATOR,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkShortcutsShortcut:action-name:
*
* A detailed action name.
*
* If this is set for a shortcut of type %GTK_SHORTCUT_ACCELERATOR,
* then GTK will use the accelerators that are associated with the
* action via [method@Gtk.Application.set_accels_for_action], and
* setting [property@Gtk.ShortcutsShortcut:accelerator] is not necessary.
*/
properties[PROP_ACTION_NAME] =
g_param_spec_string ("action-name", NULL, NULL,
NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, LAST_PROP, properties);
gtk_widget_class_set_css_name (widget_class, I_("shortcut"));
/* It is semantically a label, but the label role has such specific meaning in Orca
* as to be unusable in this context.
*/
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_LABEL);
}
static void
gtk_shortcuts_shortcut_init (GtkShortcutsShortcut *self)
{
gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
self->box = g_object_new (GTK_TYPE_BOX,
"orientation", GTK_ORIENTATION_HORIZONTAL,
"spacing", 12,
NULL);
gtk_widget_set_parent (GTK_WIDGET (self->box), GTK_WIDGET (self));
self->direction = GTK_TEXT_DIR_NONE;
self->shortcut_type = GTK_SHORTCUT_ACCELERATOR;
self->image = g_object_new (GTK_TYPE_IMAGE,
"visible", FALSE,
"valign", GTK_ALIGN_CENTER,
"accessible-role", GTK_ACCESSIBLE_ROLE_PRESENTATION,
NULL);
gtk_box_append (GTK_BOX (self->box), GTK_WIDGET (self->image));
self->accelerator = g_object_new (GTK_TYPE_SHORTCUT_LABEL,
"visible", TRUE,
"valign", GTK_ALIGN_CENTER,
NULL);
gtk_box_append (GTK_BOX (self->box), GTK_WIDGET (self->accelerator));
self->title_box = g_object_new (GTK_TYPE_BOX,
"visible", TRUE,
"valign", GTK_ALIGN_CENTER,
"hexpand", TRUE,
"orientation", GTK_ORIENTATION_VERTICAL,
NULL);
gtk_box_append (GTK_BOX (self->box), GTK_WIDGET (self->title_box));
self->title = g_object_new (GTK_TYPE_LABEL,
"visible", TRUE,
"xalign", 0.0f,
NULL);
gtk_box_append (GTK_BOX (self->title_box), GTK_WIDGET (self->title));
self->subtitle = g_object_new (GTK_TYPE_LABEL,
"visible", FALSE,
"xalign", 0.0f,
NULL);
gtk_widget_add_css_class (GTK_WIDGET (self->subtitle), "dim-label");
gtk_box_append (GTK_BOX (self->title_box), GTK_WIDGET (self->subtitle));
#if 0
gtk_accessible_update_relation (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_RELATION_LABELLED_BY, self->accelerator, self->title, NULL,
-1);
#endif
gtk_accessible_update_property (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_PROPERTY_DESCRIPTION, "",
-1);
}
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