[recipes] Make exporting work in flatpak

[Matthias Clasen <matthiasc src gnome org>]

commit 3d57f99daa8914e5a0d817afd660bd8aa43d6901
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 17 13:19:12 2017 -0500

    Make exporting work in flatpak
    
    We were writing the archive to /tmp which is a tmpfs in
    flatpak sandboxes, and does not survive longer than the
    application runs. Oops.
    
    To avoid this problem altogether, let the user choose the
    location to which we write the archive.

 src/gr-recipe-exporter.c |   48 ++++++++++++++++++++++++++++++++++++---------
 1 files changed, 38 insertions(+), 10 deletions(-)
---
diff --git a/src/gr-recipe-exporter.c b/src/gr-recipe-exporter.c
index a8c9e3a..0a54c00 100644
--- a/src/gr-recipe-exporter.c
+++ b/src/gr-recipe-exporter.c
@@ -22,6 +22,7 @@
 #include "config.h"
 
 #include <glib/gi18n.h>
+#include <glib/gstdio.h>
 #ifdef ENABLE_AUTOAR
 #include <gnome-autoar/gnome-autoar.h>
 #include "glnx-shutil.h"
@@ -329,6 +330,7 @@ prepare_export (GrRecipeExporter  *exporter,
         g_assert (exporter->sources == NULL);
 
         exporter->dir = g_mkdtemp (g_build_filename (g_get_tmp_dir (), "recipeXXXXXX", NULL));
+
         path = g_build_filename (exporter->dir, "recipes.db", NULL);
         keyfile = g_key_file_new ();
 
@@ -421,27 +423,53 @@ start_export (GrRecipeExporter *exporter)
 }
 
 static void
+file_chooser_response (GtkNativeDialog  *dialog,
+                       int               response_id,
+                       GrRecipeExporter *exporter)
+{
+        if (response_id == GTK_RESPONSE_ACCEPT) {
+                g_message ("exporting %d recipes now", g_list_length (exporter->recipes));
+
+                exporter->output = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
+
+                start_export (exporter);
+        }
+        else {
+                g_message ("not exporting now");
+        }
+
+        gtk_native_dialog_destroy (dialog);
+}
+
+static void
 export_dialog_response (GtkWidget        *dialog,
                         int               response_id,
                         GrRecipeExporter *exporter)
 {
+        gtk_widget_destroy (dialog);
+        exporter->dialog_heading = NULL;
+
         if (response_id == GTK_RESPONSE_CANCEL) {
                 g_message ("not exporting now");
         }
         else if (response_id == GTK_RESPONSE_OK) {
-                g_autofree char *dir = NULL;
-                g_autofree char *path = NULL;
+                GtkFileChooserNative *chooser;
 
-                g_message ("exporting %d recipes now", g_list_length (exporter->recipes));
-                dir = g_dir_make_tmp ("recipesXXXXXX", NULL);
-                path = g_build_filename (dir, "recipes.tar.gz", NULL);
-                exporter->output = g_file_new_for_path (path);
+                chooser = gtk_file_chooser_native_new (_("Select the location"),
+                                                       GTK_WINDOW (exporter->window),
+                                                       GTK_FILE_CHOOSER_ACTION_SAVE,
+                                                       _("_Save"),
+                                                       _("_Cancel"));
 
-                start_export (exporter);
-        }
+                gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (chooser), TRUE);
 
-        gtk_widget_destroy (dialog);
-        exporter->dialog_heading = NULL;
+                gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (chooser), TRUE);
+                gtk_file_chooser_set_current_name (GTK_FILE_CHOOSER (chooser), "recipes.tar.gz");
+
+                g_signal_connect (chooser, "response", G_CALLBACK (file_chooser_response), exporter);
+
+                gtk_native_dialog_show (GTK_NATIVE_DIALOG (chooser));
+        }
 }
 
 static void