protected override void Dispose(bool disposing)
{
if (disposing)
{
if (Tracker != null)
{
Tracker.Dispose();
Tracker = null;
}
if (_detailLayout != null)
{
_detailLayout.Dispose();
_detailLayout = null;
}
if (_masterLayout != null)
{
if (_masterLayout.ChildView != null)
{
_masterLayout.ChildView.PropertyChanged -= HandleMasterPropertyChanged;
}
_masterLayout.Dispose();
_masterLayout = null;
}
Device.Info.PropertyChanged -= DeviceInfoPropertyChanged;
if (_page != null)
{
MasterDetailPageController.BackButtonPressed -= OnBackButtonPressed;
_page.PropertyChanged -= HandlePropertyChanged;
_page.Appearing -= MasterDetailPageAppearing;
_page.Disappearing -= MasterDetailPageDisappearing;
_page.ClearValue(Platform.RendererProperty);
_page = null;
}
}
base.Dispose(disposing);
}
public void SetElement(VisualElement element)
{
MasterDetailPage oldElement = _page;
_page = element as MasterDetailPage;
_detailLayout = new MasterDetailContainer(_page, false, Context)
{
LayoutParameters = new LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent)
};
_masterLayout = new MasterDetailContainer(_page, true, Context)
{
LayoutParameters = new LayoutParams(ViewGroup.LayoutParams.WrapContent, ViewGroup.LayoutParams.WrapContent)
{
Gravity = (int)GravityFlags.Start
}
};
AddView(_detailLayout);
AddView(_masterLayout);
var activity = Context.GetActivity();
activity?.ActionBar?.SetDisplayShowHomeEnabled(true);
activity?.ActionBar?.SetHomeButtonEnabled(true);
UpdateBackgroundColor(_page);
UpdateBackgroundImage(_page);
OnElementChanged(oldElement, element);
if (oldElement != null)
{
((IMasterDetailPageController)oldElement).BackButtonPressed -= OnBackButtonPressed;
}
if (_page != null)
{
MasterDetailPageController.BackButtonPressed += OnBackButtonPressed;
}
if (Tracker == null)
{
Tracker = new VisualElementTracker(this);
}
_page.PropertyChanged += HandlePropertyChanged;
_page.Appearing += MasterDetailPageAppearing;
_page.Disappearing += MasterDetailPageDisappearing;
UpdateMaster();
UpdateDetail();
Device.Info.PropertyChanged += DeviceInfoPropertyChanged;
SetGestureState();
Presented = _page.IsPresented;
AddDrawerListener(this);
if (element != null)
{
element.SendViewInitialized(this);
}
if (element != null && !string.IsNullOrEmpty(element.AutomationId))
{
SetAutomationId(element.AutomationId);
}
SetContentDescription();
}
