[pitivi] Use a high-level API to open URLs

[Alexandru Băluț <alexbalut src gnome org>]

commit c3fadbf55b4aa148ba2627263c57066ba0bed11d
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Tue Oct 4 15:34:08 2016 +0200

    Use a high-level API to open URLs
    
    This allows using portals when running in a sandbox.
    
    Fixes https://phabricator.freedesktop.org/T7491
    
    Reviewed-by: Thibault Saunier <tsaunier gnome org>
    Differential Revision: https://phabricator.freedesktop.org/D1346

 pitivi/mainwindow.py |    3 +--
 pitivi/render.py     |    5 +++--
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/pitivi/mainwindow.py b/pitivi/mainwindow.py
index 3c2cb74..72048e7 100644
--- a/pitivi/mainwindow.py
+++ b/pitivi/mainwindow.py
@@ -17,7 +17,6 @@
 # Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 # Boston, MA 02110-1301, USA.
 import os
-import subprocess
 from gettext import gettext as _
 from hashlib import md5
 from time import time
@@ -530,7 +529,7 @@ class MainWindow(Gtk.ApplicationWindow, Loggable):
         # to do a better job (sizing, zooming, metadata, editing, etc.)
         # than the user's favorite image viewer.
         if asset.is_image():
-            subprocess.call(['xdg-open', str(path_from_uri(asset.get_id()))])
+            Gio.AppInfo.launch_default_for_uri(asset.get_id(), None)
         else:
             preview_window = PreviewAssetWindow(asset, self)
             preview_window.preview()
diff --git a/pitivi/render.py b/pitivi/render.py
index e080a59..6dee2b9 100644
--- a/pitivi/render.py
+++ b/pitivi/render.py
@@ -18,11 +18,11 @@
 # Boston, MA 02110-1301, USA.
 """Rendering-related classes and utilities."""
 import os
-import subprocess
 import time
 from gettext import gettext as _
 
 from gi.repository import GES
+from gi.repository import Gio
 from gi.repository import GLib
 from gi.repository import GObject
 from gi.repository import Gst
@@ -366,7 +366,8 @@ class RenderingProgressDialog(GObject.Object):
         self.main_render_dialog.window.show()
 
     def _playRenderedFileButtonClickedCb(self, unused_button):
-        subprocess.Popen(["xdg-open", self.main_render_dialog.outfile])
+        uri = Gst.filename_to_uri(self.main_render_dialog.outfile)
+        Gio.AppInfo.launch_default_for_uri(uri, None)
 
 
 class RenderDialog(Loggable):