forked from AuroraMiddleware/gtk
37a8ee6e95
Try to do a better job of keeping example content from being too wide. It is often rendered as <pre> text so the only time we can wrap it is in the source. It is best to full break lines at all punctuation and to try to keep the width under 70 chars or so.
581 lines
19 KiB
C
581 lines
19 KiB
C
/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
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/* GTK - The GIMP Toolkit
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* gtkfilechooserdialog.c: File selector dialog
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* Copyright (C) 2003, Red Hat, 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 "gtkfilechooserdialog.h"
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#include "gtkfilechooserprivate.h"
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#include "gtkfilechooserwidget.h"
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#include "gtkfilechooserutils.h"
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#include "gtkfilechooserembed.h"
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#include "gtkfilesystem.h"
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#include "gtksizerequest.h"
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#include "gtktypebuiltins.h"
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#include "gtkintl.h"
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#include "gtksettings.h"
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#include "gtkdialogprivate.h"
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#include <stdarg.h>
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/**
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* SECTION:gtkfilechooserdialog
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* @Short_description: A file chooser dialog, suitable for “File/Open” or “File/Save” commands
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* @Title: GtkFileChooserDialog
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* @See_also: #GtkFileChooser, #GtkDialog
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*
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* #GtkFileChooserDialog is a dialog box suitable for use with
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* “File/Open” or “File/Save as” commands. This widget works by
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* putting a #GtkFileChooserWidget inside a #GtkDialog. It exposes
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* the #GtkFileChooser interface, so you can use all of the
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* #GtkFileChooser functions on the file chooser dialog as well as
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* those for #GtkDialog.
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*
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* Note that #GtkFileChooserDialog does not have any methods of its
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* own. Instead, you should use the functions that work on a
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* #GtkFileChooser.
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*
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* ## Typical usage ## {#gtkfilechooser-typical-usage}
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*
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* In the simplest of cases, you can the following code to use
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* #GtkFileChooserDialog to select a file for opening:
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*
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* |[
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* GtkWidget *dialog;
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* GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
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* gint res;
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*
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* dialog = gtk_file_chooser_dialog_new ("Open File",
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* parent_window,
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* action,
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* _("_Cancel"),
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* GTK_RESPONSE_CANCEL,
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* _("_Open"),
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* GTK_RESPONSE_ACCEPT,
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* NULL);
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*
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* res = gtk_dialog_run (GTK_DIALOG (dialog));
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* if (res == GTK_RESPONSE_ACCEPT)
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* {
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* char *filename;
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* GtkFileChooser *chooser = GTK_FILE_CHOOSER (dialog);
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* filename = gtk_file_chooser_get_filename (chooser);
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* open_file (filename);
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* g_free (filename);
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* }
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*
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* gtk_widget_destroy (dialog);
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* ]|
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*
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* To use a dialog for saving, you can use this:
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*
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* |[
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* GtkWidget *dialog;
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* GtkFileChooser *chooser;
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* GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_SAVE;
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* gint res;
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*
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* dialog = gtk_file_chooser_dialog_new ("Save File",
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* parent_window,
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* action,
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* _("_Cancel"),
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* GTK_RESPONSE_CANCEL,
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* _("_Save"),
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* GTK_RESPONSE_ACCEPT,
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* NULL);
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* chooser = GTK_FILE_CHOOSER (dialog);
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*
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* gtk_file_chooser_set_do_overwrite_confirmation (chooser, TRUE);
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*
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* if (user_edited_a_new_document)
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* gtk_file_chooser_set_current_name (chooser,
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* _("Untitled document"));
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* else
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* gtk_file_chooser_set_filename (chooser,
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* existing_filename);
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*
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* res = gtk_dialog_run (GTK_DIALOG (dialog));
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* if (res == GTK_RESPONSE_ACCEPT)
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* {
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* char *filename;
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*
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* filename = gtk_file_chooser_get_filename (chooser);
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* save_to_file (filename);
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* g_free (filename);
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* }
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*
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* gtk_widget_destroy (dialog);
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* ]|
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*
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* ## Setting up a file chooser dialog ## {#gtkfilechooserdialog-setting-up}
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*
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* There are various cases in which you may need to use a #GtkFileChooserDialog:
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*
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* - To select a file for opening. Use #GTK_FILE_CHOOSER_ACTION_OPEN.
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*
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* - To save a file for the first time. Use #GTK_FILE_CHOOSER_ACTION_SAVE,
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* and suggest a name such as “Untitled” with gtk_file_chooser_set_current_name().
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*
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* - To save a file under a different name. Use #GTK_FILE_CHOOSER_ACTION_SAVE,
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* and set the existing filename with gtk_file_chooser_set_filename().
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*
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* - To choose a folder instead of a file. Use #GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER.
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*
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* Note that old versions of the file chooser’s documentation suggested
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* using gtk_file_chooser_set_current_folder() in various
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* situations, with the intention of letting the application
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* suggest a reasonable default folder. This is no longer
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* considered to be a good policy, as now the file chooser is
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* able to make good suggestions on its own. In general, you
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* should only cause the file chooser to show a specific folder
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* when it is appropriate to use gtk_file_chooser_set_filename(),
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* i.e. when you are doing a Save As command and you already
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* have a file saved somewhere.
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* ## Response Codes ## {#gtkfilechooserdialog-responses}
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*
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* #GtkFileChooserDialog inherits from #GtkDialog, so buttons that
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* go in its action area have response codes such as
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* #GTK_RESPONSE_ACCEPT and #GTK_RESPONSE_CANCEL. For example, you
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* could call gtk_file_chooser_dialog_new() as follows:
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*
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* |[
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* GtkWidget *dialog;
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* GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
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*
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* dialog = gtk_file_chooser_dialog_new ("Open File",
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* parent_window,
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* action,
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* _("_Cancel"),
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* GTK_RESPONSE_CANCEL,
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* _("_Open"),
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* GTK_RESPONSE_ACCEPT,
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* NULL);
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* ]|
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*
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* This will create buttons for “Cancel” and “Open” that use stock
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* response identifiers from #GtkResponseType. For most dialog
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* boxes you can use your own custom response codes rather than the
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* ones in #GtkResponseType, but #GtkFileChooserDialog assumes that
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* its “accept”-type action, e.g. an “Open” or “Save” button,
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* will have one of the following response codes:
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*
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* - #GTK_RESPONSE_ACCEPT
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* - #GTK_RESPONSE_OK
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* - #GTK_RESPONSE_YES
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* - #GTK_RESPONSE_APPLY
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*
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* This is because #GtkFileChooserDialog must intercept responses
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* and switch to folders if appropriate, rather than letting the
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* dialog terminate — the implementation uses these known
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* response codes to know which responses can be blocked if
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* appropriate.
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*
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* To summarize, make sure you use a
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* [stock response code][gtkfilechooserdialog-responses]
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* when you use #GtkFileChooserDialog to ensure proper operation.
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*/
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struct _GtkFileChooserDialogPrivate
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{
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GtkWidget *widget;
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/* for use with GtkFileChooserEmbed */
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gboolean response_requested;
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};
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static void gtk_file_chooser_dialog_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_file_chooser_dialog_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_file_chooser_dialog_map (GtkWidget *widget);
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static void gtk_file_chooser_dialog_unmap (GtkWidget *widget);
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static void file_chooser_widget_file_activated (GtkFileChooser *chooser,
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GtkFileChooserDialog *dialog);
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static void file_chooser_widget_default_size_changed (GtkWidget *widget,
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GtkFileChooserDialog *dialog);
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static void file_chooser_widget_response_requested (GtkWidget *widget,
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GtkFileChooserDialog *dialog);
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static void response_cb (GtkDialog *dialog,
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gint response_id);
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G_DEFINE_TYPE_WITH_CODE (GtkFileChooserDialog, gtk_file_chooser_dialog, GTK_TYPE_DIALOG,
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G_ADD_PRIVATE (GtkFileChooserDialog)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_FILE_CHOOSER,
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_gtk_file_chooser_delegate_iface_init))
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static void
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gtk_file_chooser_dialog_class_init (GtkFileChooserDialogClass *class)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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gobject_class->set_property = gtk_file_chooser_dialog_set_property;
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gobject_class->get_property = gtk_file_chooser_dialog_get_property;
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widget_class->map = gtk_file_chooser_dialog_map;
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widget_class->unmap = gtk_file_chooser_dialog_unmap;
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gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_FILE_CHOOSER);
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_gtk_file_chooser_install_properties (gobject_class);
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/* Bind class to template
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*/
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gtk_widget_class_set_template_from_resource (widget_class,
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"/org/gtk/libgtk/ui/gtkfilechooserdialog.ui");
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gtk_widget_class_bind_template_child_private (widget_class, GtkFileChooserDialog, widget);
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gtk_widget_class_bind_template_callback (widget_class, response_cb);
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gtk_widget_class_bind_template_callback (widget_class, file_chooser_widget_file_activated);
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gtk_widget_class_bind_template_callback (widget_class, file_chooser_widget_default_size_changed);
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gtk_widget_class_bind_template_callback (widget_class, file_chooser_widget_response_requested);
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}
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static void
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gtk_file_chooser_dialog_init (GtkFileChooserDialog *dialog)
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{
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dialog->priv = gtk_file_chooser_dialog_get_instance_private (dialog);
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dialog->priv->response_requested = FALSE;
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gtk_widget_init_template (GTK_WIDGET (dialog));
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gtk_dialog_set_use_header_bar_from_setting (GTK_DIALOG (dialog));
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_gtk_file_chooser_set_delegate (GTK_FILE_CHOOSER (dialog),
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GTK_FILE_CHOOSER (dialog->priv->widget));
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}
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static GtkWidget *
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get_accept_action_widget (GtkDialog *dialog)
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{
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gint response[] = {
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GTK_RESPONSE_ACCEPT,
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GTK_RESPONSE_OK,
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GTK_RESPONSE_YES,
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GTK_RESPONSE_APPLY
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};
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gint i;
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GtkWidget *widget;
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for (i = 0; i < G_N_ELEMENTS (response); i++)
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{
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widget = gtk_dialog_get_widget_for_response (dialog, response[i]);
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if (widget && gtk_widget_is_sensitive (widget))
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return widget;
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}
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return NULL;
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}
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static gboolean
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is_stock_accept_response_id (int response_id)
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{
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return (response_id == GTK_RESPONSE_ACCEPT
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|| response_id == GTK_RESPONSE_OK
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|| response_id == GTK_RESPONSE_YES
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|| response_id == GTK_RESPONSE_APPLY);
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}
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/* Callback used when the user activates a file in the file chooser widget */
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static void
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file_chooser_widget_file_activated (GtkFileChooser *chooser,
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GtkFileChooserDialog *dialog)
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{
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GtkWidget *widget;
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if (gtk_window_activate_default (GTK_WINDOW (dialog)))
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return;
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/* There probably isn't a default widget, so make things easier for the
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* programmer by looking for a reasonable button on our own.
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*/
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widget = get_accept_action_widget (GTK_DIALOG (dialog));
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if (widget)
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gtk_widget_activate (widget); /* Should we gtk_dialog_response (dialog, response_id) instead? */
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}
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#if 0
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/* FIXME: to see why this function is ifdef-ed out, see the comment below in
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* file_chooser_widget_default_size_changed().
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*/
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static void
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load_position (int *out_xpos, int *out_ypos)
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{
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GtkFileChooserSettings *settings;
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int x, y, width, height;
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settings = _gtk_file_chooser_settings_new ();
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_gtk_file_chooser_settings_get_geometry (settings, &x, &y, &width, &height);
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g_object_unref (settings);
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*out_xpos = x;
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*out_ypos = y;
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}
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#endif
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static void
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file_chooser_widget_default_size_changed (GtkWidget *widget,
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GtkFileChooserDialog *dialog)
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{
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GtkFileChooserDialogPrivate *priv;
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gint default_width, default_height;
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GtkRequisition req, widget_req;
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priv = gtk_file_chooser_dialog_get_instance_private (dialog);
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/* Unset any previously set size */
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gtk_widget_set_size_request (GTK_WIDGET (dialog), -1, -1);
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if (gtk_widget_is_drawable (widget))
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{
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/* Force a size request of everything before we start. This will make sure
|
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* that widget->requisition is meaningful. */
|
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gtk_widget_get_preferred_size (GTK_WIDGET (dialog),
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&req, NULL);
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gtk_widget_get_preferred_size (widget,
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&widget_req, NULL);
|
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}
|
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_gtk_file_chooser_embed_get_default_size (GTK_FILE_CHOOSER_EMBED (priv->widget),
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&default_width, &default_height);
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gtk_window_resize (GTK_WINDOW (dialog), default_width, default_height);
|
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if (!gtk_widget_get_mapped (GTK_WIDGET (dialog)))
|
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{
|
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#if 0
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/* FIXME: the code to restore the position does not work yet. It is not
|
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* clear whether it is actually desirable --- if enabled, applications
|
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* would not be able to say "center the file chooser on top of my toplevel
|
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* window". So, we don't use this code at all.
|
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*/
|
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load_position (&xpos, &ypos);
|
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if (xpos >= 0 && ypos >= 0)
|
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{
|
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gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_NONE);
|
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gtk_window_move (GTK_WINDOW (dialog), xpos, ypos);
|
||
}
|
||
#endif
|
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}
|
||
}
|
||
|
||
static void
|
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file_chooser_widget_response_requested (GtkWidget *widget,
|
||
GtkFileChooserDialog *dialog)
|
||
{
|
||
GtkWidget *button;
|
||
|
||
dialog->priv->response_requested = TRUE;
|
||
|
||
if (gtk_window_activate_default (GTK_WINDOW (dialog)))
|
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return;
|
||
|
||
/* There probably isn't a default widget, so make things easier for the
|
||
* programmer by looking for a reasonable button on our own.
|
||
*/
|
||
button = get_accept_action_widget (GTK_DIALOG (dialog));
|
||
if (button)
|
||
{
|
||
gtk_widget_activate (button);
|
||
return;
|
||
}
|
||
|
||
dialog->priv->response_requested = FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_file_chooser_dialog_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
|
||
{
|
||
GtkFileChooserDialogPrivate *priv;
|
||
|
||
priv = gtk_file_chooser_dialog_get_instance_private (GTK_FILE_CHOOSER_DIALOG (object));
|
||
|
||
switch (prop_id)
|
||
{
|
||
default:
|
||
g_object_set_property (G_OBJECT (priv->widget), pspec->name, value);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_file_chooser_dialog_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkFileChooserDialogPrivate *priv;
|
||
|
||
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
|
||
ensure_default_response (GtkFileChooserDialog *dialog)
|
||
{
|
||
GtkWidget *widget;
|
||
|
||
widget = get_accept_action_widget (GTK_DIALOG (dialog));
|
||
if (widget)
|
||
gtk_widget_grab_default (widget);
|
||
}
|
||
|
||
/* GtkWidget::map handler */
|
||
static void
|
||
gtk_file_chooser_dialog_map (GtkWidget *widget)
|
||
{
|
||
GtkFileChooserDialog *dialog = GTK_FILE_CHOOSER_DIALOG (widget);
|
||
GtkFileChooserDialogPrivate *priv = dialog->priv;
|
||
|
||
ensure_default_response (dialog);
|
||
|
||
_gtk_file_chooser_embed_initial_focus (GTK_FILE_CHOOSER_EMBED (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 x, y, width, height;
|
||
|
||
settings = _gtk_file_chooser_get_settings_for_widget (GTK_WIDGET (dialog));
|
||
|
||
window = GTK_WINDOW (dialog);
|
||
|
||
gtk_window_get_position (window, &x, &y);
|
||
gtk_window_get_size (window, &width, &height);
|
||
|
||
g_settings_set (settings, SETTINGS_KEY_WINDOW_POSITION, "(ii)", x, y);
|
||
g_settings_set (settings, SETTINGS_KEY_WINDOW_SIZE, "(ii)", width, height);
|
||
}
|
||
|
||
/* GtkWidget::unmap handler */
|
||
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);
|
||
}
|
||
|
||
/* 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,
|
||
gint response_id)
|
||
{
|
||
GtkFileChooserDialogPrivate *priv;
|
||
|
||
priv = gtk_file_chooser_dialog_get_instance_private (GTK_FILE_CHOOSER_DIALOG (dialog));
|
||
|
||
/* Act only on response IDs we recognize */
|
||
if (is_stock_accept_response_id (response_id)
|
||
&& !priv->response_requested
|
||
&& !_gtk_file_chooser_embed_should_respond (GTK_FILE_CHOOSER_EMBED (priv->widget)))
|
||
{
|
||
g_signal_stop_emission_by_name (dialog, "response");
|
||
}
|
||
|
||
priv->response_requested = FALSE;
|
||
}
|
||
|
||
static GtkWidget *
|
||
gtk_file_chooser_dialog_new_valist (const gchar *title,
|
||
GtkWindow *parent,
|
||
GtkFileChooserAction action,
|
||
const gchar *first_button_text,
|
||
va_list varargs)
|
||
{
|
||
GtkWidget *result;
|
||
const char *button_text = first_button_text;
|
||
gint 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, gint);
|
||
gtk_dialog_add_button (GTK_DIALOG (result), button_text, response_id);
|
||
button_text = va_arg (varargs, const gchar *);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/**
|
||
* gtk_file_chooser_dialog_new:
|
||
* @title: (allow-none): Title of the dialog, or %NULL
|
||
* @parent: (allow-none): Transient parent of the dialog, or %NULL
|
||
* @action: Open or save mode for the dialog
|
||
* @first_button_text: (allow-none): stock ID or text to go in the first button, or %NULL
|
||
* @...: response ID for the first button, then additional (button, id) pairs, ending with %NULL
|
||
*
|
||
* Creates a new #GtkFileChooserDialog. This function is analogous to
|
||
* gtk_dialog_new_with_buttons().
|
||
*
|
||
* Return value: a new #GtkFileChooserDialog
|
||
*
|
||
* Since: 2.4
|
||
**/
|
||
GtkWidget *
|
||
gtk_file_chooser_dialog_new (const gchar *title,
|
||
GtkWindow *parent,
|
||
GtkFileChooserAction action,
|
||
const gchar *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;
|
||
}
|