fix embedded plugin UI keyboard handling

When the GUI is opened the first time all is fine, focus is on the
embedded widget. However once a user presses one of the preset buttons
(Add, Save,...) there is no possibility to return focus to the
embedded widget. Ardour always 'sees' it as focus=GtkButton and passes
the event to the editor.

1 files changed, 7 insertions, 0 deletions

diff --git a/gtk2_ardour/au_pluginui.mm b/gtk2_ardour/au_pluginui.mm
index 9040d28a6f..76b94781d5 100644
--- a/gtk2_ardour/au_pluginui.mm
+++ b/gtk2_ardour/au_pluginui.mm
@@ -678,6 +678,13 @@ AUPluginUI::parent_cocoa_window ()
 }
 
 void
+AUPluginUI::grab_focus()
+{
+	if (au_view) {
+		[au_view becomeFirstResponder];
+	}
+}
+void
 AUPluginUI::forward_key_event (GdkEventKey* ev)
 {
 	NSEvent* nsevent = gdk_quartz_event_get_nsevent ((GdkEvent*)ev);