protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
_disposed = true;
if (disposing)
{
Device.Info.PropertyChanged -= DeviceInfoPropertyChanged;
if (Element != null)
{
MasterDetailPageController.BackButtonPressed -= OnBackButtonPressed;
Element.PropertyChanged -= HandlePropertyChanged;
Element.Appearing -= MasterDetailPageAppearing;
Element.Disappearing -= MasterDetailPageDisappearing;
}
if (_masterLayout?.ChildView != null)
{
_masterLayout.ChildView.PropertyChanged -= HandleMasterPropertyChanged;
}
if (!this.IsDisposed())
{
RemoveDrawerListener(this);
}
if (_tracker != null)
{
_tracker.Dispose();
_tracker = null;
}
if (_detailLayout != null)
{
RemoveView(_detailLayout);
_detailLayout.Dispose();
_detailLayout = null;
}
if (_masterLayout != null)
{
RemoveView(_masterLayout);
_masterLayout.Dispose();
_masterLayout = null;
}
if (Element != null)
{
Element.ClearValue(Android.Platform.RendererProperty);
Element = null;
}
}
base.Dispose(disposing);
}
void IVisualElementRenderer.SetElement(VisualElement element)
{
MasterDetailPage oldElement = Element;
MasterDetailPage newElement = Element = element as MasterDetailPage;
if (oldElement != null)
{
Device.Info.PropertyChanged -= DeviceInfoPropertyChanged;
((IMasterDetailPageController)oldElement).BackButtonPressed -= OnBackButtonPressed;
oldElement.PropertyChanged -= HandlePropertyChanged;
oldElement.Appearing -= MasterDetailPageAppearing;
oldElement.Disappearing -= MasterDetailPageDisappearing;
RemoveDrawerListener(this);
if (_detailLayout != null)
{
RemoveView(_detailLayout);
}
if (_masterLayout != null)
{
RemoveView(_masterLayout);
}
}
if (newElement != null)
{
if (_detailLayout == null)
{
_detailLayout = new MasterDetailContainer(newElement, false, Context)
{
LayoutParameters = new LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent)
};
_masterLayout = new MasterDetailContainer(newElement, true, Context)
{
LayoutParameters = new LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent)
{
Gravity = (int)GravityFlags.Start
}
};
if (_fragmentManager != null)
{
_detailLayout.SetFragmentManager(_fragmentManager);
_masterLayout.SetFragmentManager(_fragmentManager);
}
AddView(_detailLayout);
AddView(_masterLayout);
Device.Info.PropertyChanged += DeviceInfoPropertyChanged;
AddDrawerListener(this);
}
UpdateBackgroundColor(newElement);
UpdateBackgroundImage(newElement);
UpdateMaster();
UpdateDetail();
UpdateFlowDirection();
((IMasterDetailPageController)newElement).BackButtonPressed += OnBackButtonPressed;
newElement.PropertyChanged += HandlePropertyChanged;
newElement.Appearing += MasterDetailPageAppearing;
newElement.Disappearing += MasterDetailPageDisappearing;
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();
}