[glib/portal] Add portal support to g_app_info_launch_uris

[Matthias Clasen <matthiasc src gnome org>]

commit c980bd2bc416f6762c49497ddc042cea11a30bf2
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jun 16 18:07:56 2016 -0400

    Add portal support to g_app_info_launch_uris
    
    Call out to the org.freedesktop.portal.AppChooser portal.

 gio/gdesktopappinfo.c |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 49 insertions(+), 0 deletions(-)
---
diff --git a/gio/gdesktopappinfo.c b/gio/gdesktopappinfo.c
index f45328e..9a2c784 100644
--- a/gio/gdesktopappinfo.c
+++ b/gio/gdesktopappinfo.c
@@ -2871,6 +2871,26 @@ g_desktop_app_info_launch_uris_with_dbus (GDesktopAppInfo    *info,
 }
 
 static gboolean
+should_use_portal (void)
+{
+  const char *use_portal;
+  char *path;
+
+  path = g_strdup_printf ("/run/user/%d/flatpak-info", getuid());
+  if (g_file_test (path, G_FILE_TEST_EXISTS))
+    use_portal = "1";
+  else
+    {
+      use_portal = g_getenv ("GTK_USE_PORTAL");
+      if (!use_portal)
+        use_portal = "";
+    }
+  g_free (path);
+
+  return g_str_equal (use_portal, "1");
+}
+
+static gboolean
 g_desktop_app_info_launch_uris_internal (GAppInfo                   *appinfo,
                                          GList                      *uris,
                                          GAppLaunchContext          *launch_context,
@@ -2887,6 +2907,35 @@ g_desktop_app_info_launch_uris_internal (GAppInfo                   *appinfo,
 
   session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
 
+  g_print ("show uris %s, have bus: %d, want portal %d\n",
+           uris ? (char *)uris->data : "", session_bus != NULL, should_use_portal ());
+  if (session_bus && uris && should_use_portal ())
+    {
+      GDBusMessage *message;
+      GVariantBuilder opt_builder;
+
+      g_variant_builder_init (&opt_builder, G_VARIANT_TYPE_VARDICT);
+
+      message = g_dbus_message_new_method_call ("org.freedesktop.portal.Desktop",
+                                                "/org/freedesktop/portal/desktop",
+                                                "org.freedesktop.portal.AppChooser",
+                                                "OpenURI");
+
+      g_variant_builder_init (&opt_builder, G_VARIANT_TYPE_VARDICT);
+
+      g_dbus_message_set_body (message, g_variant_new ("(ss a{sv})",
+                                                       "", /*TODO find parent window */
+                                                       (const char *)uris->data,
+                                                       g_variant_builder_end (&opt_builder)));
+
+      g_dbus_connection_send_message (session_bus,
+                                      message,
+                                      G_DBUS_SEND_MESSAGE_FLAGS_NONE,
+                                      NULL,
+                                      NULL);
+      return TRUE;
+    }
+
   if (session_bus && info->app_id)
     g_desktop_app_info_launch_uris_with_dbus (info, session_bus, uris, launch_context);
   else