[telegnome] Stop using deprecated Gtk.show_uri

[Colin Watson <cjwatson src gnome org>]

commit c65dc78bd8b8c8f7918406e01062d8d3c3c67098
Author: Colin Watson <cjwatson debian org>
Date:   Sat Feb 10 02:27:40 2018 +0000

    Stop using deprecated Gtk.show_uri
    
    * src/gui.vala (Gui.activate_help_contents): Use Gtk.show_uri_on_window
    rather than Gtk.show_uri.
    * README, configure.ac: Require gtk+-3.0 >= 3.22.

 README       |    2 +-
 configure.ac |    2 +-
 src/gui.vala |    4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/README b/README
index 5fd79eb..32fc1f7 100644
--- a/README
+++ b/README
@@ -7,7 +7,7 @@ To compile this package, you need:
 
 An ANSI C-compiler
 GLib >= 2.44
-GTK+ >= 3.8
+GTK+ >= 3.22
 gdk-pixbuf >= 2.26
 cairo >= 1.10
 dconf
diff --git a/configure.ac b/configure.ac
index e953b86..85cfffd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,7 +28,7 @@ AC_DEFINE_UNQUOTED([SYSCONFDIR], "$sysconfdir", [System configuration directory.
 AM_PROG_VALAC
 
 AM_PATH_GLIB_2_0([2.44.0], [], [AC_MSG_ERROR([GLib >= 2.44.0 is required])], [gobject gio])
-PKG_CHECK_MODULES([TELEGNOME], [gtk+-3.0 >= 3.8 gdk-pixbuf-2.0 >= 2.26 cairo >= 1.10 dconf uuid])
+PKG_CHECK_MODULES([TELEGNOME], [gtk+-3.0 >= 3.22 gdk-pixbuf-2.0 >= 2.26 cairo >= 1.10 dconf uuid])
 
 AC_ARG_VAR([XMLLINT], [the xmllint program])
 AC_PATH_PROG([XMLLINT], [xmllint])
diff --git a/src/gui.vala b/src/gui.vala
index 0bca815..2476f26 100644
--- a/src/gui.vala
+++ b/src/gui.vala
@@ -434,8 +434,8 @@ public class Gui : Object {
        public void activate_help_contents (SimpleAction action,
                                            Variant? parameter) {
                try {
-                       Gtk.show_uri (window.get_screen (),
-                                     "help:telegnome", Gdk.CURRENT_TIME);
+                       Gtk.show_uri_on_window (window, "help:telegnome",
+                                               Gdk.CURRENT_TIME);
                } catch (Error e) {
                        warning ("Error displaying help: %s", e.message);
                }