[glade] GladeEditorPropertyTextClass: use relative paths for resources

[Juan Pablo Ugarte <jpu src gnome org>]

commit 7eb1012bb270f4e30afe518d0b9289c473fc0657
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Sat Feb 24 12:01:30 2018 -0300

    GladeEditorPropertyTextClass: use relative paths for resources
    
    From now one Glade will use relative paths for filename properties
    like image resources.

 gladeui/glade-editor-property.c |   22 ++++++++++------------
 1 files changed, 10 insertions(+), 12 deletions(-)
---
diff --git a/gladeui/glade-editor-property.c b/gladeui/glade-editor-property.c
index 58cd27e..b838295 100644
--- a/gladeui/glade-editor-property.c
+++ b/gladeui/glade-editor-property.c
@@ -2181,12 +2181,14 @@ glade_editor_property_show_resource_dialog (GladeProject *project,
                                             GtkWidget    *parent,
                                             gchar      **filename)
 {
-
+  GFile *resource_folder;
   GtkWidget *dialog;
   gchar *folder;
 
   g_return_val_if_fail (filename != NULL, FALSE);
 
+  *filename = NULL;
+
   dialog =
       gtk_file_chooser_dialog_new (_
                                    ("Select a file from the project resource directory"),
@@ -2204,26 +2206,22 @@ glade_editor_property_show_resource_dialog (GladeProject *project,
 
   _glade_util_dialog_set_hig (GTK_DIALOG (dialog));
 
-  folder = glade_project_resource_fullpath (project, ".");
+  folder = glade_project_resource_fullpath (project, "");
   gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), folder);
+  resource_folder = g_file_new_for_path (folder);
   g_free (folder);
 
   if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK)
     {
-      gchar *name;
-
-      name = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
-
-      *filename = name ? g_path_get_basename (name) : NULL;
-
-      g_free (name);
-      gtk_widget_destroy (dialog);
-      return TRUE;
+      GFile *file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
+      *filename = _glade_util_file_get_relative_path (resource_folder, file);
+      g_object_unref (file);
     }
 
   gtk_widget_destroy (dialog);
+  g_object_unref (resource_folder);
 
-  return FALSE;
+  return *filename != NULL;
 }
 
 static void