public virtual void AddChild(XF.Element child, int physicalSiblingIndex)
{
if (child is null)
{
throw new ArgumentNullException(nameof(child));
}
XF.ShellItem itemToAdd = child switch
{
XF.TemplatedPage childAsTemplatedPage => childAsTemplatedPage, // Implicit conversion
XF.ShellContent childAsShellContent => childAsShellContent, // Implicit conversion
XF.ShellSection childAsShellSection => childAsShellSection, // Implicit conversion
XF.MenuItem childAsMenuItem => childAsMenuItem, // Implicit conversion
XF.ShellItem childAsShellItem => childAsShellItem,
_ => throw new NotSupportedException($"Handler of type '{GetType().FullName}' representing element type '{TargetElement?.GetType().FullName ?? "<null>"}' doesn't support adding a child (child type is '{child.GetType().FullName}').")
};
if (ShellControl.Items.Count >= physicalSiblingIndex)
{
ShellControl.Items.Insert(physicalSiblingIndex, itemToAdd);
}
else
{
Debug.WriteLine($"WARNING: {nameof(AddChild)} called with {nameof(physicalSiblingIndex)}={physicalSiblingIndex}, but ShellControl.Items.Count={ShellControl.Items.Count}");
ShellControl.Items.Add(itemToAdd);
}
}
private XF.ShellItem GetItemForElement(XF.Element child)
{
return(child switch
{
XF.TemplatedPage childAsTemplatedPage => GetItemForTemplatedPage(childAsTemplatedPage),
XF.ShellContent childAsShellContent => GetItemForContent(childAsShellContent),
XF.ShellSection childAsShellSection => GetItemForSection(childAsShellSection),
XF.MenuItem childAsMenuItem => GetItemForMenuItem(childAsMenuItem),
XF.ShellItem childAsShellItem => childAsShellItem,
_ => null
});
private static bool IsShellItemWithMenuItem(XF.ShellItem shellItem, XF.MenuItem menuItem)
{
// Xamarin.Forms.MenuShellItem is internal so we have to use reflection to check that
// its MenuItem property is the same as the MenuItem we're looking for.
if (!MenuShellItemType.IsAssignableFrom(shellItem.GetType()))
{
return(false);
}
var menuItemInMenuShellItem = MenuShellItemMenuItemProperty.GetValue(shellItem);
return(menuItemInMenuShellItem == menuItem);
}
private static ElementHandler CreateHandler(XF.Element parent, MobileBlazorBindingsRenderer renderer)
{
return(parent switch
{
XF.ContentPage contentPage => new ContentPageHandler(renderer, contentPage),
XF.ContentView contentView => new ContentViewHandler(renderer, contentView),
XF.Label label => new LabelHandler(renderer, label),
XF.FlyoutPage flyoutPage => new FlyoutPageHandler(renderer, flyoutPage),
XF.ScrollView scrollView => new ScrollViewHandler(renderer, scrollView),
XF.ShellContent shellContent => new ShellContentHandler(renderer, shellContent),
XF.Shell shell => new ShellHandler(renderer, shell),
XF.ShellItem shellItem => new ShellItemHandler(renderer, shellItem),
XF.ShellSection shellSection => new ShellSectionHandler(renderer, shellSection),
XF.TabbedPage tabbedPage => new TabbedPageHandler(renderer, tabbedPage),
_ => new ElementHandler(renderer, parent),
});
public virtual void RemoveChild(XF.Element child)
{
if (child is null)
{
throw new ArgumentNullException(nameof(child));
}
var itemToRemove = child switch
{
XF.TemplatedPage childAsTemplatedPage => GetItemForTemplatedPage(childAsTemplatedPage),
XF.ShellContent childAsShellContent => GetItemForContent(childAsShellContent),
XF.ShellSection childAsShellSection => GetItemForSection(childAsShellSection),
XF.MenuItem childAsMenuItem => GetItemForMenuItem(childAsMenuItem),
XF.ShellItem childAsShellItem => childAsShellItem,
_ => throw new NotSupportedException($"Handler of type '{GetType().FullName}' representing element type '{TargetElement?.GetType().FullName ?? "<null>"}' doesn't support removing a child (child type is '{child.GetType().FullName}').")
};
ShellControl.Items.Remove(itemToRemove);
}
public ShellItemHandler(NativeComponentRenderer renderer, XF.ShellItem shellItemControl) : base(renderer, shellItemControl)
{
ShellItemControl = shellItemControl ?? throw new ArgumentNullException(nameof(shellItemControl));
Initialize(renderer);
}
public RequestDefinition(string fullUri, ShellItem item, ShellSection section, ShellContent content, List <string> globalRoutes) :
this(new Uri(fullUri, UriKind.Absolute), item, section, content, globalRoutes)
{
}
