There are cases where there is no user interaction but we do
receive a clicked signal: in the clipboard we do have
GtkRadioToolButton which are derived from the GtkToggleToolButton [1].
The 'clicked' signal is emitted when the 'active' property
changes [2]. We use the 'active' property to indicate the
current active clipping. In the Invoker we do check now
if the event originated a user interaction or if it was
generated due to a for example a property change.
[1] http://developer.gnome.org/gtk3/3.4/GtkToggleToolButton.html
[2] http://developer.gnome.org/gtk3/3.4/GtkToggleToolButton.html#GtkToggleToolButton--active
Signed-off-by: Simon Schampijer <simon@laptop.org>
Reviewed-by: Carlos Garnacho <carlos@lanedo.com>
Acked-by: Manuel Quiñones <manuq@laptop.org>
