static partial void ProcessAutoPackage(Maui.IElement element)
{
if (element.Handler is not IPlatformViewHandler nvh ||
nvh.ContainerView is not Panel panel)
{
return;
}
panel.Children.Clear();
if (element is not IVisualTreeElement vte)
{
return;
}
var mauiContext = element?.Handler?.MauiContext;
if (mauiContext == null)
{
return;
}
foreach (var child in vte.GetVisualChildren())
{
if (child is Maui.IElement childElement)
{
panel.Children.Add(childElement.ToPlatform(mauiContext));
}
}
}
public override void SetVirtualView(Maui.IElement view)
{
if (_shellSection != null)
{
((IShellSectionController)_shellSection).NavigationRequested -= OnNavigationRequested;
((IShellController)_shellSection.FindParentOfType <Shell>() !).RemoveAppearanceObserver(this);
}
// If we've already connected to the navigation manager
// then we need to make sure to disconnect and connect up to
// the new incoming virtual view
if (_navigationManager?.NavigationView != null &&
_navigationManager.NavigationView != view)
{
_navigationManager.Disconnect(_navigationManager.NavigationView, PlatformView);
if (view is IStackNavigation stackNavigation)
{
_navigationManager.Connect(stackNavigation, PlatformView);
}
}
base.SetVirtualView(view);
_shellSection = (ShellSection)view;
if (_shellSection != null)
{
((IShellSectionController)_shellSection).NavigationRequested += OnNavigationRequested;
((IShellController)_shellSection.FindParentOfType <Shell>() !).AddAppearanceObserver(this, _shellSection);
}
}
static partial void ProcessAutoPackage(Maui.IElement element)
{
if (element?.Handler?.PlatformView is not AViewGroup viewGroup)
{
return;
}
viewGroup.RemoveAllViews();
if (element is not IVisualTreeElement vte)
{
return;
}
var mauiContext = element?.Handler?.MauiContext;
if (mauiContext == null)
{
return;
}
foreach (var child in vte.GetVisualChildren())
{
if (child is Maui.IElement childElement)
{
viewGroup.AddView(childElement.ToPlatform(mauiContext));
}
}
}
public void SetVirtualView(
Maui.IElement view,
Action <ElementChangedEventArgs <TElement> > onElementChanged,
bool autoPackage)
{
#if WINDOWS
VisualElementRenderer <TElement, TNativeElement> .SetVirtualView(view, _viewHandler, onElementChanged, ref _element, ref _mapper, _defaultMapper, autoPackage);
#else
VisualElementRenderer <TElement> .SetVirtualView(view, _viewHandler, onElementChanged, ref _element, ref _mapper, _defaultMapper, autoPackage);
#endif
}
public void SetVirtualView(
Maui.IElement view,
Action <VisualElementChangedEventArgs> onElementChanged,
bool autoPackage)
{
SetVirtualView(view, ElementChanged, false);
void ElementChanged(ElementChangedEventArgs <TElement> e)
{
onElementChanged(new VisualElementChangedEventArgs(
e.OldElement as VisualElement,
e.NewElement as VisualElement));
}
}
public override void SetVirtualView(Maui.IElement view)
{
if (_shellSection != null)
{
((IShellSectionController)_shellSection).NavigationRequested -= OnNavigationRequested;
}
base.SetVirtualView(view);
_shellSection = (ShellSection)view;
if (_shellSection != null)
{
((IShellSectionController)_shellSection).NavigationRequested += OnNavigationRequested;
}
}
public override AView OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
if (_shellContent != null)
{
_page = ((IShellContentController)_shellContent).GetOrCreateContent();
}
_root = inflater.Inflate(Controls.Resource.Layout.shellcontent, null).JavaCast <CoordinatorLayout>();
var shellContentMauiContext = MauiContext.MakeScoped(layoutInflater: inflater, fragmentManager: ChildFragmentManager);
Maui.IElement parentElement = (_shellContent as Maui.IElement) ?? _page;
var shellToolbar = new Toolbar(parentElement);
ShellToolbarTracker.ApplyToolbarChanges(_shellContext.Shell.Toolbar, shellToolbar);
_toolbar = (AToolbar)shellToolbar.ToPlatform(shellContentMauiContext);
var appBar = _root.FindViewById <AppBarLayout>(Resource.Id.shellcontent_appbar);
appBar.AddView(_toolbar);
_viewhandler = _page.ToHandler(shellContentMauiContext);
_shellPageContainer = new ShellPageContainer(Context, _viewhandler);
if (_root is ViewGroup vg)
{
vg.AddView(_shellPageContainer);
}
_toolbarTracker = _shellContext.CreateTrackerForToolbar(_toolbar);
_toolbarTracker.SetToolbar(shellToolbar);
_toolbarTracker.Page = _page;
// this is probably not the most ideal way to do that
_toolbarTracker.CanNavigateBack = _shellContent == null;
_appearanceTracker = _shellContext.CreateToolbarAppearanceTracker();
((IShellController)_shellContext.Shell).AddAppearanceObserver(this, _page);
if (_shellPageContainer.LayoutParameters is CoordinatorLayout.LayoutParams layoutParams)
{
layoutParams.Behavior = new AppBarLayout.ScrollingViewBehavior();
}
return(_root);
}
internal static void DisposeModalAndChildHandlers(this Maui.IElement view)
{
IPlatformViewHandler renderer;
foreach (Element child in ((Element)view).Descendants())
{
if (child is VisualElement ve)
{
ve.Handler?.DisconnectHandler();
if (ve.Handler is IDisposable disposable)
{
disposable.Dispose();
}
}
}
if (view is VisualElement visualElement)
{
renderer = (visualElement.Handler as IPlatformViewHandler);
if (renderer != null)
{
if (renderer.ViewController != null)
{
if (renderer.ViewController.ParentViewController is Platform.ModalWrapper modalWrapper)
{
modalWrapper.Dispose();
}
}
renderer.PlatformView?.RemoveFromSuperview();
if (view.Handler is IDisposable disposable)
{
disposable.Dispose();
}
}
}
}
public override void SetVirtualView(Maui.IElement view)
{
if (view.Parent is IShellController controller)
{
if (_shellItem != null)
{
controller.RemoveAppearanceObserver(this);
}
_shellItem = (ShellItem)view;
base.SetVirtualView(view);
if (_shellItem != null)
{
controller.AddAppearanceObserver(this, _shellItem);
}
}
else
{
base.SetVirtualView(view);
}
}
public Toolbar(Maui.IElement parent)
{
_parent = parent;
}
protected override void SetHandler(
Maui.IElement element, List <(string Name, MenuBarHandlerUpdate?Args)> events)
public Toolbar(Maui.IElement parent)
{
_parent = parent;
_toolbarTracker.CollectionChanged += (_, __) => ToolbarItems = _toolbarTracker.ToolbarItems;
}
protected abstract void SetHandler(
Maui.IElement element,
List <(string Name, THandlerUpdate?Args)> events);