[gedit] FileChooserOpenAdapter: copy from GeditFileChooserOpen

[Sébastien Wilmet <swilmet src gnome org>]

commit 8bbf471cd646c29ee03079df233b34ccce33ecf9
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Jun 6 21:25:03 2020 +0200

    FileChooserOpenAdapter: copy from GeditFileChooserOpen

 gedit/gedit-file-chooser-open-adapter.c | 171 ++++++++++++++++++++++++++++++++
 gedit/meson.build                       |   5 +-
 po/POTFILES.in                          |   1 +
 3 files changed, 176 insertions(+), 1 deletion(-)
---
diff --git a/gedit/gedit-file-chooser-open-adapter.c b/gedit/gedit-file-chooser-open-adapter.c
new file mode 100644
index 000000000..2942e0bef
--- /dev/null
+++ b/gedit/gedit-file-chooser-open-adapter.c
@@ -0,0 +1,171 @@
+/*
+ * This file is part of gedit
+ *
+ * Copyright (C) 2020 Sébastien Wilmet <swilmet gnome org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "gedit-file-chooser-open.h"
+#include <glib/gi18n.h>
+
+struct _GeditFileChooserOpenPrivate
+{
+       GtkFileChooserNative *chooser_native;
+};
+
+enum
+{
+       SIGNAL_DONE,
+       N_SIGNALS
+};
+
+static guint signals[N_SIGNALS];
+
+G_DEFINE_TYPE_WITH_PRIVATE (GeditFileChooserOpen, _gedit_file_chooser_open, G_TYPE_OBJECT)
+
+static void
+_gedit_file_chooser_open_dispose (GObject *object)
+{
+       GeditFileChooserOpen *chooser = GEDIT_FILE_CHOOSER_OPEN (object);
+
+       g_clear_object (&chooser->priv->chooser_native);
+
+       G_OBJECT_CLASS (_gedit_file_chooser_open_parent_class)->dispose (object);
+}
+
+static void
+_gedit_file_chooser_open_class_init (GeditFileChooserOpenClass *klass)
+{
+       GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+       object_class->dispose = _gedit_file_chooser_open_dispose;
+
+       /*
+        * GeditFileChooserOpen::done:
+        * @chooser: the #GeditFileChooserOpen emitting the signal.
+        * @accept: whether the response code is %GTK_RESPONSE_ACCEPT.
+        */
+       signals[SIGNAL_DONE] =
+               g_signal_new ("done",
+                             G_TYPE_FROM_CLASS (klass),
+                             G_SIGNAL_RUN_FIRST,
+                             0, NULL, NULL, NULL,
+                             G_TYPE_NONE,
+                             1, G_TYPE_BOOLEAN);
+}
+
+static void
+chooser_native_response_cb (GtkFileChooserNative *chooser_native,
+                           gint                  response_id,
+                           GeditFileChooserOpen *chooser)
+{
+       gboolean accept;
+
+       accept = response_id == GTK_RESPONSE_ACCEPT;
+       g_signal_emit (chooser, signals[SIGNAL_DONE], 0, accept);
+}
+
+static void
+_gedit_file_chooser_open_init (GeditFileChooserOpen *chooser)
+{
+       chooser->priv = _gedit_file_chooser_open_get_instance_private (chooser);
+
+       /* Translators: "Open Files" is the title of the file chooser window. */
+       chooser->priv->chooser_native = gtk_file_chooser_native_new (C_("window title", "Open Files"),
+                                                                    NULL,
+                                                                    GTK_FILE_CHOOSER_ACTION_OPEN,
+                                                                    NULL,
+                                                                    NULL);
+
+       /* Set the dialog as modal. It's a workaround for this bug:
+        * https://gitlab.gnome.org/GNOME/gtk/issues/2824
+        * "GtkNativeDialog: non-modal and gtk_native_dialog_show(), doesn't
+        * present the window"
+        *
+        * - Drag-and-drop files from the file chooser to the GeditWindow: OK,
+        *   it still works.
+        * - Other main windows not being "blocked"/insensitive
+        *   (GtkWindowGroup): OK, calling gtk_native_dialog_set_transient_for()
+        *   does the right thing.
+        *
+        * Even if the above GTK bug is fixed, the file chooser can be kept
+        * modal, except if there was a good reason for not being modal (what
+        * reason(s)?).
+        */
+       gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (chooser->priv->chooser_native), TRUE);
+
+       g_signal_connect (chooser->priv->chooser_native,
+                         "response",
+                         G_CALLBACK (chooser_native_response_cb),
+                         chooser);
+}
+
+GeditFileChooserOpen *
+_gedit_file_chooser_open_new (void)
+{
+       return g_object_new (GEDIT_TYPE_FILE_CHOOSER_OPEN, NULL);
+}
+
+void
+_gedit_file_chooser_open_set_transient_for (GeditFileChooserOpen *chooser,
+                                           GtkWindow            *parent)
+{
+       g_return_if_fail (GEDIT_IS_FILE_CHOOSER_OPEN (chooser));
+       g_return_if_fail (parent == NULL || GTK_IS_WINDOW (parent));
+
+       gtk_native_dialog_set_transient_for (GTK_NATIVE_DIALOG (chooser->priv->chooser_native), parent);
+}
+
+void
+_gedit_file_chooser_open_show (GeditFileChooserOpen *chooser)
+{
+       g_return_if_fail (GEDIT_IS_FILE_CHOOSER_OPEN (chooser));
+
+       gtk_native_dialog_show (GTK_NATIVE_DIALOG (chooser->priv->chooser_native));
+}
+
+GSList *
+_gedit_file_chooser_open_get_files (GeditFileChooserOpen *chooser)
+{
+       g_return_val_if_fail (GEDIT_IS_FILE_CHOOSER_OPEN (chooser), NULL);
+
+       return gtk_file_chooser_get_files (GTK_FILE_CHOOSER (chooser->priv->chooser_native));
+}
+
+gchar *
+_gedit_file_chooser_open_get_current_folder_uri (GeditFileChooserOpen *chooser)
+{
+       g_return_val_if_fail (GEDIT_IS_FILE_CHOOSER_OPEN (chooser), NULL);
+
+       return gtk_file_chooser_get_current_folder_uri (GTK_FILE_CHOOSER (chooser->priv->chooser_native));
+}
+
+void
+_gedit_file_chooser_open_set_current_folder_uri (GeditFileChooserOpen *chooser,
+                                                const gchar          *uri)
+{
+       g_return_if_fail (GEDIT_IS_FILE_CHOOSER_OPEN (chooser));
+
+       gtk_file_chooser_set_current_folder_uri (GTK_FILE_CHOOSER (chooser->priv->chooser_native), uri);
+}
+
+const GtkSourceEncoding *
+_gedit_file_chooser_open_get_encoding (GeditFileChooserOpen *chooser)
+{
+       g_return_val_if_fail (GEDIT_IS_FILE_CHOOSER_OPEN (chooser), NULL);
+
+       /* Stub */
+       return NULL;
+}
diff --git a/gedit/meson.build b/gedit/meson.build
index 92962632d..14a7ec0eb 100644
--- a/gedit/meson.build
+++ b/gedit/meson.build
@@ -90,7 +90,6 @@ libgedit_private_sources = [
   'gedit-factory.c',
   'gedit-file-chooser-dialog.c',
   'gedit-file-chooser-dialog-gtk.c',
-  'gedit-file-chooser-open.c',
   'gedit-highlight-mode-dialog.c',
   'gedit-highlight-mode-selector.c',
   'gedit-history-entry.c',
@@ -111,6 +110,10 @@ libgedit_private_sources = [
   'gedit-status-menu-button.c',
   'gedit-tab-label.c',
   'gedit-view-frame.c',
+
+  # Feature toggle:
+  #'gedit-file-chooser-open.c',
+  'gedit-file-chooser-open-adapter.c',
 ]
 
 libgedit_c_args = []
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 921698014..6c10bd271 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -19,6 +19,7 @@ gedit/gedit-encodings-dialog.c
 gedit/gedit-factory.c
 gedit/gedit-file-chooser-dialog-gtk.c
 gedit/gedit-file-chooser-dialog-osx.m
+gedit/gedit-file-chooser-open-adapter.c
 gedit/gedit-file-chooser-open.c
 gedit/gedit-highlight-mode-dialog.c
 gedit/gedit-highlight-mode-selector.c