public void Attach(DependencyObject associatedObject)
{
AssociatedObject = associatedObject;
// process start
if (Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
element.Visibility = Visibility.Visible;
}
else
{
_dispatcher = Common.DispatcherWrapper.Current();
// throttled calculate event
_throttleHelper = new EventThrottleHelper();
_throttleHelper.ThrottledEvent += delegate { Calculate(); };
_throttleHelper.Throttle = 1000;
// handle click
element.Click += new Common.WeakReference<NavButtonBehavior, object, RoutedEventArgs>(this)
{
EventAction = (i, s, e) => Element_Click(s, e),
DetachAction = (i, w) => element.Click -= w.Handler,
}.Handler;
CalculateThrottled();
}
}
public NavButtonBehavior()
{
if (!Windows.ApplicationModel.DesignMode.DesignModeEnabled)
{
_dispatcher = Common.DispatcherWrapper.Current();
_throttleHelper = new EventThrottleHelper { Throttle = 1000 };
}
}
public void Detach()
{
_throttleHelper = null;
if (Frame != null)
{
Frame.SizeChanged -= SizeChanged;
Frame.LayoutUpdated -= LayoutUpdated;
}
UnregisterPropertyChangedCallback(Frame.CanGoBackProperty, _goBackReg);
UnregisterPropertyChangedCallback(Frame.CanGoForwardProperty, _goForwardReg);
}
public NavButtonBehavior()
{
_dispatcher = Common.DispatcherWrapper.Current();
_throttleHelper = new EventThrottleHelper { Throttle = 1000 };
}
public ThrottledEventTriggerBehavior()
{
throttleHelper = new EventThrottleHelper();
throttleHelper.ThrottledEvent += ThrottleHelperOnThrottledEvent;
}