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gtk2/gtk/gtkfilechooserdialog.c
Matthias Clasen e499a09759 Drop gtkintl.h 
Include gtkprivate.h for I_() and glib-i18n.h for
gettext macros.
2022-09-24 10:03:37 -04:00

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/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* GTK - The GIMP Toolkit
* gtkfilechooserdialog.c: File selector dialog
* Copyright (C) 2003, Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkfilechooserdialog.h"
#include "gtkfilechooserprivate.h"
#include "gtkfilechooserwidget.h"
#include "gtkfilechooserwidgetprivate.h"
#include "gtkfilechooserutils.h"
#include "gtksizerequest.h"
#include "gtktypebuiltins.h"
#include <glib/gi18n-lib.h>
#include "gtksettings.h"
#include "gtktogglebutton.h"
#include "gtkheaderbar.h"
#include "gtkdialogprivate.h"
#include "gtklabel.h"
#include "gtkfilechooserentry.h"
#include "gtkbox.h"
#include <stdarg.h>
/**
* GtkFileChooserDialog:
*
* `GtkFileChooserDialog` is a dialog suitable for use with
* “File Open” or “File Save” commands.
*
* ![An example GtkFileChooserDialog](filechooser.png)
*
* This widget works by putting a [class@Gtk.FileChooserWidget]
* inside a [class@Gtk.Dialog]. It exposes the [iface@Gtk.FileChooser]
* interface, so you can use all of the [iface@Gtk.FileChooser] functions
* on the file chooser dialog as well as those for [class@Gtk.Dialog].
*
* Note that `GtkFileChooserDialog` does not have any methods of its
* own. Instead, you should use the functions that work on a
* [iface@Gtk.FileChooser].
*
* If you want to integrate well with the platform you should use the
* [class@Gtk.FileChooserNative] API, which will use a platform-specific
* dialog if available and fall back to `GtkFileChooserDialog`
* otherwise.
*
* ## Typical usage
*
* In the simplest of cases, you can the following code to use
* `GtkFileChooserDialog` to select a file for opening:
*
* ```c
* static void
* on_open_response (GtkDialog *dialog,
* int response)
* {
* if (response == GTK_RESPONSE_ACCEPT)
* {
* GtkFileChooser *chooser = GTK_FILE_CHOOSER (dialog);
*
* g_autoptr(GFile) file = gtk_file_chooser_get_file (chooser);
*
* open_file (file);
* }
*
* gtk_window_destroy (GTK_WINDOW (dialog));
* }
*
* // ...
* GtkWidget *dialog;
* GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
*
* dialog = gtk_file_chooser_dialog_new ("Open File",
* parent_window,
* action,
* _("_Cancel"),
* GTK_RESPONSE_CANCEL,
* _("_Open"),
* GTK_RESPONSE_ACCEPT,
* NULL);
*
* gtk_widget_show (dialog);
*
* g_signal_connect (dialog, "response",
* G_CALLBACK (on_open_response),
* NULL);
* ```
*
* To use a dialog for saving, you can use this:
*
* ```c
* static void
* on_save_response (GtkDialog *dialog,
* int response)
* {
* if (response == GTK_RESPONSE_ACCEPT)
* {
* GtkFileChooser *chooser = GTK_FILE_CHOOSER (dialog);
*
* g_autoptr(GFile) file = gtk_file_chooser_get_file (chooser);
*
* save_to_file (file);
* }
*
* gtk_window_destroy (GTK_WINDOW (dialog));
* }
*
* // ...
* GtkWidget *dialog;
* GtkFileChooser *chooser;
* GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_SAVE;
*
* dialog = gtk_file_chooser_dialog_new ("Save File",
* parent_window,
* action,
* _("_Cancel"),
* GTK_RESPONSE_CANCEL,
* _("_Save"),
* GTK_RESPONSE_ACCEPT,
* NULL);
* chooser = GTK_FILE_CHOOSER (dialog);
*
* if (user_edited_a_new_document)
* gtk_file_chooser_set_current_name (chooser, _("Untitled document"));
* else
* gtk_file_chooser_set_file (chooser, existing_filename);
*
* gtk_widget_show (dialog);
*
* g_signal_connect (dialog, "response",
* G_CALLBACK (on_save_response),
* NULL);
* ```
*
* ## Setting up a file chooser dialog
*
* There are various cases in which you may need to use a `GtkFileChooserDialog`:
*
* - To select a file for opening, use %GTK_FILE_CHOOSER_ACTION_OPEN.
*
* - To save a file for the first time, use %GTK_FILE_CHOOSER_ACTION_SAVE,
* and suggest a name such as “Untitled” with
* [method@Gtk.FileChooser.set_current_name].
*
* - To save a file under a different name, use %GTK_FILE_CHOOSER_ACTION_SAVE,
* and set the existing file with [method@Gtk.FileChooser.set_file].
*
* - To choose a folder instead of a filem use %GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER.
*
* In general, you should only cause the file chooser to show a specific
* folder when it is appropriate to use [method@Gtk.FileChooser.set_file],
* i.e. when you are doing a “Save As” command and you already have a file
* saved somewhere.
* ## Response Codes
*
* `GtkFileChooserDialog` inherits from [class@Gtk.Dialog], so buttons that
* go in its action area have response codes such as %GTK_RESPONSE_ACCEPT and
* %GTK_RESPONSE_CANCEL. For example, you could call
* [ctor@Gtk.FileChooserDialog.new] as follows:
*
* ```c
* GtkWidget *dialog;
* GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
*
* dialog = gtk_file_chooser_dialog_new ("Open File",
* parent_window,
* action,
* _("_Cancel"),
* GTK_RESPONSE_CANCEL,
* _("_Open"),
* GTK_RESPONSE_ACCEPT,
* NULL);
* ```
*
* This will create buttons for “Cancel” and “Open” that use predefined
* response identifiers from [enum@Gtk.ResponseType]. For most dialog
* boxes you can use your own custom response codes rather than the
* ones in [enum@Gtk.ResponseType], but `GtkFileChooserDialog` assumes that
* its “accept”-type action, e.g. an “Open” or “Save” button,
* will have one of the following response codes:
*
* - %GTK_RESPONSE_ACCEPT
* - %GTK_RESPONSE_OK
* - %GTK_RESPONSE_YES
* - %GTK_RESPONSE_APPLY
*
* This is because `GtkFileChooserDialog` must intercept responses and switch
* to folders if appropriate, rather than letting the dialog terminate — the
* implementation uses these known response codes to know which responses can
* be blocked if appropriate.
*
* To summarize, make sure you use a predefined response code
* when you use `GtkFileChooserDialog` to ensure proper operation.
*/
typedef struct _GtkFileChooserDialogPrivate GtkFileChooserDialogPrivate;
typedef struct _GtkFileChooserDialogClass GtkFileChooserDialogClass;
struct _GtkFileChooserDialog
{
GtkDialog parent_instance;
};
struct _GtkFileChooserDialogClass
{
GtkDialogClass parent_class;
};
struct _GtkFileChooserDialogPrivate
{
GtkWidget *widget;
GtkSizeGroup *buttons;
/* for use with GtkFileChooserEmbed */
gboolean response_requested;
gboolean search_setup;
gboolean has_entry;
};
static void gtk_file_chooser_dialog_dispose (GObject *object);
static void gtk_file_chooser_dialog_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_file_chooser_dialog_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_file_chooser_dialog_notify (GObject *object,
GParamSpec *pspec);
static void gtk_file_chooser_dialog_realize (GtkWidget *widget);
static void gtk_file_chooser_dialog_map (GtkWidget *widget);
static void gtk_file_chooser_dialog_unmap (GtkWidget *widget);
static void gtk_file_chooser_dialog_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline);
static void gtk_file_chooser_dialog_activate_response (GtkWidget *widget,
const char *action_name,
GVariant *parameters);
static void response_cb (GtkDialog *dialog,
int response_id);
static void setup_save_entry (GtkFileChooserDialog *dialog);
G_DEFINE_TYPE_WITH_CODE (GtkFileChooserDialog, gtk_file_chooser_dialog, GTK_TYPE_DIALOG,
G_ADD_PRIVATE (GtkFileChooserDialog)
G_IMPLEMENT_INTERFACE (GTK_TYPE_FILE_CHOOSER,
_gtk_file_chooser_delegate_iface_init))
static void
gtk_file_chooser_dialog_class_init (GtkFileChooserDialogClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
gobject_class->dispose = gtk_file_chooser_dialog_dispose;
gobject_class->set_property = gtk_file_chooser_dialog_set_property;
gobject_class->get_property = gtk_file_chooser_dialog_get_property;
gobject_class->notify = gtk_file_chooser_dialog_notify;
widget_class->realize = gtk_file_chooser_dialog_realize;
widget_class->map = gtk_file_chooser_dialog_map;
widget_class->unmap = gtk_file_chooser_dialog_unmap;
widget_class->size_allocate = gtk_file_chooser_dialog_size_allocate;
_gtk_file_chooser_install_properties (gobject_class);
/* Bind class to template
*/
gtk_widget_class_set_template_from_resource (widget_class,
"/org/gtk/libgtk/ui/gtkfilechooserdialog.ui");
gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserDialog, widget);
gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserDialog, buttons);
gtk_widget_class_bind_template_callback (widget_class, response_cb);
/**
* GtkFileChooserDialog|response.activate:
*
* Activate the default response of the dialog.
*/
gtk_widget_class_install_action (widget_class, "response.activate", NULL, gtk_file_chooser_dialog_activate_response);
}
static void
gtk_file_chooser_dialog_init (GtkFileChooserDialog *dialog)
{
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (dialog);
priv->response_requested = FALSE;
gtk_widget_init_template (GTK_WIDGET (dialog));
gtk_dialog_set_use_header_bar_from_setting (GTK_DIALOG (dialog));
_gtk_file_chooser_set_delegate (GTK_FILE_CHOOSER (dialog),
GTK_FILE_CHOOSER (priv->widget));
}
static GtkWidget *
get_accept_action_widget (GtkDialog *dialog,
gboolean sensitive_only)
{
int response[] = {
GTK_RESPONSE_ACCEPT,
GTK_RESPONSE_OK,
GTK_RESPONSE_YES,
GTK_RESPONSE_APPLY
};
int i;
GtkWidget *widget;
for (i = 0; i < G_N_ELEMENTS (response); i++)
{
widget = gtk_dialog_get_widget_for_response (dialog, response[i]);
if (widget)
{
if (!sensitive_only)
return widget;
if (gtk_widget_is_sensitive (widget))
return widget;
}
}
return NULL;
}
static gboolean
is_accept_response_id (int response_id)
{
return (response_id == GTK_RESPONSE_ACCEPT ||
response_id == GTK_RESPONSE_OK ||
response_id == GTK_RESPONSE_YES ||
response_id == GTK_RESPONSE_APPLY);
}
static void
gtk_file_chooser_dialog_activate_response (GtkWidget *widget,
const char *action_name,
GVariant *parameters)
{
GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (widget);
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (dialog);
GtkWidget *button;
priv->response_requested = TRUE;
button = get_accept_action_widget (GTK_DIALOG (dialog), TRUE);
if (button)
{
gtk_widget_activate (button);
return;
}
priv->response_requested = FALSE;
}
static void
gtk_file_chooser_dialog_dispose (GObject *object)
{
gtk_widget_dispose_template (GTK_WIDGET (object), GTK_TYPE_FILE_CHOOSER_DIALOG);
G_OBJECT_CLASS (gtk_file_chooser_dialog_parent_class)->dispose (object);
}
static void
gtk_file_chooser_dialog_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (GTK_FILE_CHOOSER_DIALOG (object));
g_object_set_property (G_OBJECT (priv->widget), pspec->name, value);
}
static void
gtk_file_chooser_dialog_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (GTK_FILE_CHOOSER_DIALOG (object));
g_object_get_property (G_OBJECT (priv->widget), pspec->name, value);
}
static void
gtk_file_chooser_dialog_notify (GObject *object,
GParamSpec *pspec)
{
if (strcmp (pspec->name, "action") == 0)
setup_save_entry (GTK_FILE_CHOOSER_DIALOG (object));
if (G_OBJECT_CLASS (gtk_file_chooser_dialog_parent_class)->notify)
G_OBJECT_CLASS (gtk_file_chooser_dialog_parent_class)->notify (object, pspec);
}
static void
add_button (GtkWidget *button, gpointer data)
{
GtkFileChooserDialog *dialog = data;
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (dialog);
if (GTK_IS_BUTTON (button))
gtk_size_group_add_widget (priv->buttons, button);
}
static gboolean
translate_subtitle_to_visible (GBinding *binding,
const GValue *from_value,
GValue *to_value,
gpointer user_data)
{
const char *subtitle = g_value_get_string (from_value);
g_value_set_boolean (to_value, subtitle != NULL);
return TRUE;
}
static void
setup_search (GtkFileChooserDialog *dialog)
{
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (dialog);
gboolean use_header;
GtkWidget *child;
if (priv->search_setup)
return;
priv->search_setup = TRUE;
g_object_get (dialog, "use-header-bar", &use_header, NULL);
if (use_header)
{
GtkWidget *button;
GtkWidget *header;
GtkWidget *box;
GtkWidget *label;
button = gtk_toggle_button_new ();
gtk_widget_set_focus_on_click (button, FALSE);
gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
gtk_button_set_icon_name (GTK_BUTTON (button), "edit-find-symbolic");
gtk_widget_show (button);
header = gtk_dialog_get_header_bar (GTK_DIALOG (dialog));
gtk_header_bar_pack_end (GTK_HEADER_BAR (header), button);
g_object_bind_property (button, "active",
priv->widget, "search-mode",
G_BINDING_BIDIRECTIONAL);
if (!priv->has_entry)
{
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_widget_set_valign (box, GTK_ALIGN_CENTER);
label = gtk_label_new (NULL);
gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
gtk_label_set_single_line_mode (GTK_LABEL (label), TRUE);
gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_END);
gtk_label_set_width_chars (GTK_LABEL (label), 5);
gtk_widget_add_css_class (label, "title");
gtk_widget_set_parent (label, box);
g_object_bind_property (dialog, "title",
label, "label",
G_BINDING_SYNC_CREATE);
label = gtk_label_new (NULL);
gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
gtk_label_set_single_line_mode (GTK_LABEL (label), TRUE);
gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_END);
gtk_widget_add_css_class (label, "subtitle");
gtk_widget_set_parent (label, box);
g_object_bind_property (priv->widget, "subtitle",
label, "label",
G_BINDING_SYNC_CREATE);
g_object_bind_property_full (priv->widget, "subtitle",
label, "visible",
G_BINDING_SYNC_CREATE,
translate_subtitle_to_visible,
NULL, NULL, NULL);
gtk_header_bar_set_title_widget (GTK_HEADER_BAR (header), box);
}
for (child = gtk_widget_get_first_child (header);
child != NULL;
child = gtk_widget_get_next_sibling (child))
add_button (child, dialog);
}
}
static void
setup_save_entry (GtkFileChooserDialog *dialog)
{
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (dialog);
gboolean use_header;
GtkFileChooserAction action;
gboolean need_entry;
GtkWidget *header;
g_object_get (dialog,
"use-header-bar", &use_header,
"action", &action,
NULL);
if (!use_header)
return;
header = gtk_dialog_get_header_bar (GTK_DIALOG (dialog));
need_entry = action == GTK_FILE_CHOOSER_ACTION_SAVE;
if (need_entry && !priv->has_entry)
{
GtkWidget *box;
GtkWidget *label;
GtkWidget *entry;
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
label = gtk_label_new_with_mnemonic (_("_Name"));
entry = _gtk_file_chooser_entry_new (FALSE, FALSE);
g_object_set (label, "margin-start", 6, "margin-end", 6, NULL);
g_object_set (entry, "margin-start", 6, "margin-end", 6, NULL);
gtk_label_set_mnemonic_widget (GTK_LABEL (label), entry);
gtk_box_append (GTK_BOX (box), label);
gtk_box_append (GTK_BOX (box), entry);
gtk_header_bar_set_title_widget (GTK_HEADER_BAR (header), box);
gtk_file_chooser_widget_set_save_entry (GTK_FILE_CHOOSER_WIDGET (priv->widget), entry);
}
else if (!need_entry && priv->has_entry)
{
gtk_header_bar_set_title_widget (GTK_HEADER_BAR (header), NULL);
gtk_file_chooser_widget_set_save_entry (GTK_FILE_CHOOSER_WIDGET (priv->widget), NULL);
}
priv->has_entry = need_entry;
}
static void
ensure_default_response (GtkFileChooserDialog *dialog)
{
GtkWidget *widget;
widget = get_accept_action_widget (GTK_DIALOG (dialog), TRUE);
if (widget)
gtk_window_set_default_widget (GTK_WINDOW (dialog), widget);
}
static void
gtk_file_chooser_dialog_realize (GtkWidget *widget)
{
GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (widget);
GSettings *settings;
int width, height;
settings = _gtk_file_chooser_get_settings_for_widget (widget);
g_settings_get (settings, SETTINGS_KEY_WINDOW_SIZE, "(ii)", &width, &height);
if (width != 0 && height != 0)
gtk_window_set_default_size (GTK_WINDOW (dialog), width, height);
GTK_WIDGET_CLASS (gtk_file_chooser_dialog_parent_class)->realize (widget);
}
static void
gtk_file_chooser_dialog_map (GtkWidget *widget)
{
GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (widget);
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (dialog);
setup_search (dialog);
setup_save_entry (dialog);
ensure_default_response (dialog);
gtk_file_chooser_widget_initial_focus (GTK_FILE_CHOOSER_WIDGET (priv->widget));
GTK_WIDGET_CLASS (gtk_file_chooser_dialog_parent_class)->map (widget);
}
static void
save_dialog_geometry (GtkFileChooserDialog *dialog)
{
GtkWindow *window;
GSettings *settings;
int old_width, old_height;
int width, height;
settings = _gtk_file_chooser_get_settings_for_widget (GTK_WIDGET (dialog));
window = GTK_WINDOW (dialog);
gtk_window_get_default_size (window, &width, &height);
g_settings_get (settings, SETTINGS_KEY_WINDOW_SIZE, "(ii)", &old_width, &old_height);
if (old_width != width || old_height != height)
g_settings_set (settings, SETTINGS_KEY_WINDOW_SIZE, "(ii)", width, height);
g_settings_apply (settings);
}
static void
gtk_file_chooser_dialog_unmap (GtkWidget *widget)
{
GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (widget);
save_dialog_geometry (dialog);
GTK_WIDGET_CLASS (gtk_file_chooser_dialog_parent_class)->unmap (widget);
}
static void
gtk_file_chooser_dialog_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GTK_WIDGET_CLASS (gtk_file_chooser_dialog_parent_class)->size_allocate (widget,
width,
height,
baseline);
if (gtk_widget_is_drawable (widget))
save_dialog_geometry (GTK_FILE_CHOOSER_DIALOG (widget));
}
/* We do a signal connection here rather than overriding the method in
* class_init because GtkDialog::response is a RUN_LAST signal. We want *our*
* handler to be run *first*, regardless of whether the user installs response
* handlers of his own.
*/
static void
response_cb (GtkDialog *dialog,
int response_id)
{
GtkFileChooserDialogPrivate *priv = gtk_file_chooser_dialog_get_instance_private (GTK_FILE_CHOOSER_DIALOG (dialog));
/* Act only on response IDs we recognize */
if (is_accept_response_id (response_id) &&
!priv->response_requested &&
!gtk_file_chooser_widget_should_respond (GTK_FILE_CHOOSER_WIDGET (priv->widget)))
{
g_signal_stop_emission_by_name (dialog, "response");
}
priv->response_requested = FALSE;
}
static GtkWidget *
gtk_file_chooser_dialog_new_valist (const char *title,
GtkWindow *parent,
GtkFileChooserAction action,
const char *first_button_text,
va_list varargs)
{
GtkWidget *result;
const char *button_text = first_button_text;
int response_id;
result = g_object_new (GTK_TYPE_FILE_CHOOSER_DIALOG,
"title", title,
"action", action,
NULL);
if (parent)
gtk_window_set_transient_for (GTK_WINDOW (result), parent);
while (button_text)
{
response_id = va_arg (varargs, int);
gtk_dialog_add_button (GTK_DIALOG (result), button_text, response_id);
button_text = va_arg (varargs, const char *);
}
return result;
}
/**
* gtk_file_chooser_dialog_new:
* @title: (nullable): Title of the dialog
* @parent: (nullable): Transient parent of the dialog
* @action: Open or save mode for the dialog
* @first_button_text: (nullable): text to go in the first button
* @...: response ID for the first button, then additional (button, id) pairs, ending with %NULL
*
* Creates a new `GtkFileChooserDialog`.
*
* This function is analogous to [ctor@Gtk.Dialog.new_with_buttons].
*
* Returns: a new `GtkFileChooserDialog`
*/
GtkWidget *
gtk_file_chooser_dialog_new (const char *title,
GtkWindow *parent,
GtkFileChooserAction action,
const char *first_button_text,
...)
{
GtkWidget *result;
va_list varargs;
va_start (varargs, first_button_text);
result = gtk_file_chooser_dialog_new_valist (title, parent, action,
first_button_text,
varargs);
va_end (varargs);
return result;
}
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