/* Set focus to actor */
static void _xfdashboard_viewpad_focusable_set_focus(XfdashboardFocusable *inFocusable)
{
XfdashboardViewpad *self;
XfdashboardViewpadPrivate *priv;
XfdashboardFocusableInterface *selfIface;
XfdashboardFocusableInterface *parentIface;
g_return_if_fail(XFDASHBOARD_IS_FOCUSABLE(inFocusable));
g_return_if_fail(XFDASHBOARD_IS_VIEWPAD(inFocusable));
self=XFDASHBOARD_VIEWPAD(inFocusable);
priv=self->priv;
/* Viewpad is just a proxy for the current active view.
* So check if current active view is focusable and call its
* virtual function.
*/
if(priv->activeView &&
XFDASHBOARD_IS_FOCUSABLE(priv->activeView))
{
/* Call virtual function of view to set focus */
xfdashboard_focusable_set_focus(XFDASHBOARD_FOCUSABLE(priv->activeView));
/* Call parent class interface function of this actor */
selfIface=XFDASHBOARD_FOCUSABLE_GET_IFACE(inFocusable);
parentIface=g_type_interface_peek_parent(selfIface);
if(parentIface && parentIface->set_focus)
{
parentIface->set_focus(inFocusable);
}
}
}
/* Set focus to a registered focusable actor */
void xfdashboard_focus_manager_set_focus(XfdashboardFocusManager *self, XfdashboardFocusable *inFocusable)
{
XfdashboardFocusManagerPrivate *priv;
XfdashboardFocusable *oldFocusable;
g_return_if_fail(XFDASHBOARD_IS_FOCUS_MANAGER(self));
g_return_if_fail(XFDASHBOARD_IS_FOCUSABLE(inFocusable));
priv=self->priv;
oldFocusable=NULL;
/* Check if focusable actor is really registered */
if(g_list_find(priv->registeredFocusables, inFocusable)==NULL)
{
g_warning(_("Trying to focus an unregistered focusable actor"));
return;
}
/* Check if new focusable actor can be focussed. If it cannot be focussed
* move focus to next focusable actor. If no focusable actor can be found
* do not change focus at all.
*/
if(!xfdashboard_focusable_can_focus(inFocusable))
{
XfdashboardFocusable *newFocusable;
newFocusable=xfdashboard_focus_manager_get_next_focusable(self, inFocusable);
if(!newFocusable)
{
g_debug("Requested focusable actor '%s' cannot be focus but no other focusable actor was found",
G_OBJECT_TYPE_NAME(inFocusable));
return;
}
g_debug("Requested focusable actor '%s' cannot be focused - moving focus to '%s'",
G_OBJECT_TYPE_NAME(inFocusable),
newFocusable ? G_OBJECT_TYPE_NAME(newFocusable) : "<nothing>");
inFocusable=newFocusable;
}
/* Do nothing if current focused actor and new one are the same */
oldFocusable=priv->currentFocus;
if(oldFocusable==inFocusable)
{
g_debug("Current focused actor and new one are the same so do nothing.");
return;
}
/* Unset focus at current focused actor */
if(priv->currentFocus)
{
xfdashboard_focusable_unset_focus(priv->currentFocus);
priv->currentFocus=NULL;
}
/* Set focus to new focusable actor */
priv->currentFocus=inFocusable;
xfdashboard_focusable_set_focus(priv->currentFocus);
g_debug("Moved focus from '%s' to '%s'",
oldFocusable ? G_OBJECT_TYPE_NAME(oldFocusable) : "<nothing>",
G_OBJECT_TYPE_NAME(priv->currentFocus));
/* Emit signal for changed focus */
g_signal_emit(self, XfdashboardFocusManagerSignals[SIGNAL_CHANGED], 0, oldFocusable, priv->currentFocus);
}
