protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
_disposed = true;
if (disposing)
{
Device.Info.PropertyChanged -= DeviceInfoPropertyChanged;
if (Element != null)
{
FlyoutPageController.BackButtonPressed -= OnBackButtonPressed;
Element.PropertyChanged -= HandlePropertyChanged;
Element.Appearing -= FlyoutPageAppearing;
Element.Disappearing -= FlyoutPageDisappearing;
}
if (_flyoutLayout?.ChildView != null)
{
_flyoutLayout.ChildView.PropertyChanged -= HandleFlyoutPropertyChanged;
}
if (!this.IsDisposed())
{
RemoveDrawerListener(this);
}
if (_tracker != null)
{
_tracker.Dispose();
_tracker = null;
}
if (_detailLayout != null)
{
RemoveView(_detailLayout);
_detailLayout.Dispose();
_detailLayout = null;
}
if (_flyoutLayout != null)
{
RemoveView(_flyoutLayout);
_flyoutLayout.Dispose();
_flyoutLayout = null;
}
if (Element != null)
{
Element.ClearValue(Android.Platform.RendererProperty);
Element = null;
}
}
base.Dispose(disposing);
}
void IVisualElementRenderer.SetElement(VisualElement element)
{
FlyoutPage oldElement = Element;
FlyoutPage newElement = Element = element as FlyoutPage;
if (oldElement != null)
{
Device.Info.PropertyChanged -= DeviceInfoPropertyChanged;
((IFlyoutPageController)oldElement).BackButtonPressed -= OnBackButtonPressed;
oldElement.PropertyChanged -= HandlePropertyChanged;
oldElement.Appearing -= FlyoutPageAppearing;
oldElement.Disappearing -= FlyoutPageDisappearing;
RemoveDrawerListener(this);
if (_detailLayout != null)
{
RemoveView(_detailLayout);
}
if (_flyoutLayout != null)
{
RemoveView(_flyoutLayout);
}
}
if (newElement != null)
{
if (_detailLayout == null)
{
_detailLayout = new FlyoutPageContainer(newElement, false, Context)
{
LayoutParameters = new LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent)
};
_flyoutLayout = new FlyoutPageContainer(newElement, true, Context)
{
LayoutParameters = new LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent)
{
Gravity = (int)GravityFlags.Start
}
};
if (_fragmentManager != null)
{
_detailLayout.SetFragmentManager(_fragmentManager);
_flyoutLayout.SetFragmentManager(_fragmentManager);
}
AddView(_detailLayout);
AddView(_flyoutLayout);
Device.Info.PropertyChanged += DeviceInfoPropertyChanged;
AddDrawerListener(this);
}
UpdateBackgroundColor(newElement);
UpdateBackgroundImage(newElement);
UpdateFlyout();
UpdateDetail();
UpdateFlowDirection();
((IFlyoutPageController)newElement).BackButtonPressed += OnBackButtonPressed;
newElement.PropertyChanged += HandlePropertyChanged;
newElement.Appearing += FlyoutPageAppearing;
newElement.Disappearing += FlyoutPageDisappearing;
SetGestureState();
Presented = newElement.IsPresented;
newElement.SendViewInitialized(this);
}
OnElementChanged(oldElement, newElement);
// Make sure to initialize this AFTER event is fired
if (_tracker == null)
{
_tracker = new VisualElementTracker(this);
}
if (element != null && !string.IsNullOrEmpty(element.AutomationId))
{
SetAutomationId(element.AutomationId);
}
SetContentDescription();
}