[gitg] Add warning icon if the url is not supported

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 4556ba5a058c1a7214b52a3bba3ef82e1e796542
Author: Jose Manuel Pintor Freire <jmpintorfreire gmail com>
Date:   Wed Apr 17 09:41:52 2013 +0200

    Add warning icon if the url is not supported

 gitg/gitg-window.vala | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)
---
diff --git a/gitg/gitg-window.vala b/gitg/gitg-window.vala
index 04f9aa5..7ff0d5d 100644
--- a/gitg/gitg-window.vala
+++ b/gitg/gitg-window.vala
@@ -208,7 +208,20 @@ public class Window : Gtk.ApplicationWindow, GitgExt.Application, Initable, Gtk.
                dlg.set_transient_for(this);
 
                entry_url.changed.connect((e) => {
-                       dlg.set_response_sensitive(Gtk.ResponseType.OK, 
Ggit.Remote.is_supported_url(entry_url.get_text()));
+                       string ?tooltip_text = null;
+                       string ?icon_name = null;
+                       bool url_supported = Ggit.Remote.is_supported_url(entry_url.get_text());
+
+                       if (!url_supported && (entry_url.get_text_length() > 0))
+                       {
+                               icon_name = "dialog-warning-symbolic";
+                               tooltip_text = _("The URL introduced is not supported");
+                       }
+
+                       entry_url.set_icon_from_icon_name(Gtk.EntryIconPosition.SECONDARY, icon_name);
+                       entry_url.set_icon_tooltip_text(Gtk.EntryIconPosition.SECONDARY, tooltip_text);
+
+                       dlg.set_response_sensitive(Gtk.ResponseType.OK, url_supported);
                });
 
                dlg.response.connect((d, id) => {