void CleanUp(ScrollView scrollView, ScrollViewer scrollViewer)
{
if (Element != null)
{
Element.PropertyChanged -= OnContentElementPropertyChanged;
}
if (ContainerElement != null)
{
ContainerElement.LayoutUpdated -= SetInitialRtlPosition;
}
if (scrollView != null)
{
scrollView.ScrollToRequested -= OnScrollToRequested;
}
if (scrollViewer != null)
{
scrollViewer.ViewChanged -= OnViewChanged;
if (scrollViewer.Content is FrameworkElement element)
{
element.LayoutUpdated -= SetInitialRtlPosition;
}
}
if (_currentView != null)
{
_currentView.Cleanup();
}
}
void UpdateContent()
{
if (_currentView != null)
{
_currentView.Cleanup();
}
if (Control?.Content is FrameworkElement frameworkElement)
{
frameworkElement.LayoutUpdated -= SetInitialRtlPosition;
}
_currentView = Element.Content;
IVisualElementRenderer renderer = null;
if (_currentView != null)
{
renderer = _currentView.GetOrCreateRenderer();
}
Control.Content = renderer != null ? renderer.ContainerElement : null;
UpdateMargins();
if (renderer?.ContainerElement != null)
{
renderer.ContainerElement.LayoutUpdated += SetInitialRtlPosition;
}
}
void UpdateContent()
{
if (_currentView != null)
{
_currentView.Cleanup(); // cleanup old view
}
_currentView = Element.Content;
Control.Child = _currentView != null?Platform.GetOrCreateRenderer(_currentView).GetNativeElement() : null;
}
void UpdateContent()
{
_currentView?.Cleanup(); // cleanup old view
_currentView = Element.Content;
Control.Child = _currentView != null?Platform.WPF.Platform.GetOrCreateRenderer(_currentView).GetNativeElement() : null;
//Update vertical content Alignment
if (Control.Child != null)
{
(Control.Child as FrameworkElement).VerticalAlignment = Element.Content.VerticalOptions.ToNativeVerticalAlignment();
}
}
public Task<object> LoadContentAsync(Control parent, object oldContent, object newContent, CancellationToken cancellationToken)
{
VisualElement element = oldContent as VisualElement;
if (element != null)
{
element.Cleanup(); // Cleanup old content
}
if (!global::Avalonia.Application.Current.CheckAccess())
throw new InvalidOperationException("UIThreadRequired");
var scheduler = TaskScheduler.FromCurrentSynchronizationContext();
return Task.Factory.StartNew(() => LoadContent(parent, newContent), cancellationToken, TaskCreationOptions.None, scheduler);
}
void UpdateContent()
{
ContentPage page = Element as ContentPage;
if (page != null)
{
if (_currentView != null)
{
_currentView.Cleanup(); // cleanup old view
}
_currentView = page.Content;
Control.Content = _currentView != null?Platform.GetOrCreateRenderer(_currentView).GetNativeElement() : null;
}
}
void UpdateContent()
{
if (_currentView != null)
{
_currentView.Cleanup(); // cleanup old view
}
_currentView = Element.Content;
var render = Platform.GTK.Platform.GetRenderer(_currentView) ?? Platform.GTK.Platform.CreateRenderer(_currentView);
Control.Child = _currentView != null ? render.Container : null;
//Update vertical content Alignment
if (Control.Child != null)
{
}
}
public Task <object> LoadContentAsync(FrameworkElement parent, object oldContent, object newContent, CancellationToken cancellationToken)
{
VisualElement element = oldContent as VisualElement;
if (element != null)
{
element.Cleanup(); // Cleanup old content
}
if (!System.Windows.Application.Current.Dispatcher.CheckAccess())
{
throw new InvalidOperationException("UIThreadRequired");
}
var scheduler = TaskScheduler.FromCurrentSynchronizationContext();
return(Task.Factory.StartNew(() => LoadContent(parent, newContent), cancellationToken, TaskCreationOptions.None, scheduler));
}
void LoadContent()
{
if (_currentView != null)
{
_currentView.Cleanup();
}
_currentView = Element.Content;
IVisualElementRenderer renderer = null;
if (_currentView != null)
{
renderer = _currentView.GetOrCreateRenderer();
}
Control.Content = renderer != null ? renderer.ContainerElement : null;
UpdateMargins();
}
void UpdateContent()
{
if (_currentView != null)
{
_currentView.Cleanup();
}
if (Control?.Content is FrameworkElement oldElement)
{
oldElement.LayoutUpdated -= SetInitialRtlPosition;
if (oldElement is IVisualElementRenderer oldRenderer &&
oldRenderer.Element is View oldContentView)
{
oldContentView.PropertyChanged -= OnContentElementPropertyChanged;
}
}
_currentView = Element.Content;
IVisualElementRenderer renderer = null;
if (_currentView != null)
{
renderer = _currentView.GetOrCreateRenderer();
}
Control.Content = renderer?.ContainerElement;
UpdateContentMargins();
if (renderer?.Element != null)
{
renderer.Element.PropertyChanged += OnContentElementPropertyChanged;
}
if (renderer?.ContainerElement != null)
{
renderer.ContainerElement.LayoutUpdated += SetInitialRtlPosition;
}
}
private void LoadContent()
{
if (_currentView != null)
{
_currentView.Cleanup();
}
_currentView = Element.Content;
IVisualElementRenderer renderer = null;
if (_currentView != null)
{
renderer = _currentView.GetOrCreateRenderer();
renderer.Container.Unparent();
}
if (renderer != null)
{
var content = renderer.Container;
_viewPort.Add(content);
}
}
void LoadContent()
{
if (_currentView != null)
{
_currentView.Cleanup(); // cleanup old view
}
_currentView = Element.Content;
if (_currentView != null)
{
/*
* Wrap Content in a DockPanel : The goal is to reduce ce Measure Cycle on scolling
*/
DockPanel dockPanel = new DockPanel();
dockPanel.Children.Add(Platform.GetOrCreateRenderer(_currentView).GetNativeElement());
Control.Content = dockPanel;
}
else
{
Control.Content = null;
}
UpdateMargins();
}
