void IMauiContainerElementHandler.AddChild(MC.Element child, int physicalSiblingIndex)
{
if (!(child is TItemType typedChild))
{
throw new NotSupportedException($"Cannot add item of type {child?.GetType().Name} to a {typeof(TItemType)} collection.");
}
_propertyItems.Insert(physicalSiblingIndex, typedChild);
}
public virtual void AddChild(MC.Element child, int physicalSiblingIndex)
{
if (child is null)
{
throw new ArgumentNullException(nameof(child));
}
if (child is FlyoutFlyoutPageContentPage masterPage)
{
FlyoutPageControl.Flyout = masterPage;
}
else if (child is FlyoutDetailPageContentPage detailPage)
{
FlyoutPageControl.Detail = detailPage;
}
else
{
throw new InvalidOperationException($"Unknown child type {child.GetType().FullName} being added to parent element type {GetType().FullName}.");
}
}
public virtual void RemoveChild(MC.Element child)
{
if (child is null)
{
throw new ArgumentNullException(nameof(child));
}
if (child == FlyoutPageControl.Flyout)
{
FlyoutPageControl.Flyout = new MC.Page()
{
Title = "Title"
};
}
else if (child == FlyoutPageControl.Detail)
{
FlyoutPageControl.Detail = new MC.Page();
}
else
{
throw new InvalidOperationException($"Unknown child type {child.GetType().FullName} being removed from parent element type {GetType().FullName}.");
}
}
bool ElementFitsAncestorTypeAndLevel(Element element, ref int level, ref object lastPotentialBctx)
{
if (!(Source is RelativeBindingSource relativeSource))
{
return(false);
}
bool fitsElementType =
relativeSource.Mode == RelativeBindingSourceMode.FindAncestor &&
relativeSource.AncestorType.GetTypeInfo().IsAssignableFrom(element.GetType().GetTypeInfo());
bool fitsBindingContextType =
element.BindingContext != null &&
relativeSource.Mode == RelativeBindingSourceMode.FindAncestorBindingContext &&
relativeSource.AncestorType.GetTypeInfo().IsAssignableFrom(element.BindingContext.GetType().GetTypeInfo());
if (!fitsElementType && !fitsBindingContextType)
{
return(false);
}
if (fitsBindingContextType)
{
if (!object.ReferenceEquals(lastPotentialBctx, element.BindingContext))
{
lastPotentialBctx = element.BindingContext;
level++;
}
}
else
{
level++;
}
return(level >= relativeSource.AncestorLevel);
}
public static double GetNamedSize(NamedSize size, Element targetElement)
{
return(GetNamedSize(size, targetElement.GetType()));
}
public void RemoveChild(MC.Element child)
{
if (!(child is MC.View childView))
{
throw new ArgumentException($"Expected parent to be of type {typeof(MC.View).FullName} but it is of type {child?.GetType().FullName}.", nameof(child));
}
_children.Remove(childView);
_parentGrid.Children.Remove(childView);
}
public void AddChild(MC.Element child, int physicalSiblingIndex)
{
if (!(child is MC.View childView))
{
throw new ArgumentException($"Expected parent to be of type {typeof(MC.View).FullName} but it is of type {child?.GetType().FullName}.", nameof(child));
}
MC.Grid.SetColumn(childView, Column);
MC.Grid.SetColumnSpan(childView, ColumnSpan);
MC.Grid.SetRow(childView, Row);
MC.Grid.SetRowSpan(childView, RowSpan);
_children.Add(childView);
_parentGrid.Children.Add(childView);
}
public void RemoveChild(MC.Element child)
{
if (!(child is MC.GradientStop gradientStopChild))
{
throw new ArgumentException($"GradientBrush support GradientStop child elements only, but {child?.GetType()} found instead.", nameof(child));
}
GradientBrushControl.GradientStops.Remove(gradientStopChild);
}
public int GetChildIndex(MC.Element child)
{
if (!(child is MC.GradientStop gradientStopChild))
{
throw new ArgumentException($"GradientBrush support GradientStop child elements only, but {child?.GetType()} found instead.", nameof(child));
}
return(GradientBrushControl.GradientStops.IndexOf(gradientStopChild));
}
public void AddChild(MC.Element child, int physicalSiblingIndex)
{
if (!(child is MC.GradientStop gradientStopChild))
{
throw new ArgumentException($"GradientBrush support GradientStop child elements only, but {child?.GetType()} found instead.", nameof(child));
}
if (physicalSiblingIndex <= GradientBrushControl.GradientStops.Count)
{
GradientBrushControl.GradientStops.Insert(physicalSiblingIndex, gradientStopChild);
}
else
{
Debug.WriteLine($"WARNING: {nameof(AddChild)} called with {nameof(physicalSiblingIndex)}={physicalSiblingIndex}, but GradientBrushControl.GradientStops.Count={GradientBrushControl.GradientStops}");
GradientBrushControl.GradientStops.Add(gradientStopChild);
}
}
public virtual void RemoveChild(MC.Element child)
{
if (child is null)
{
throw new ArgumentNullException(nameof(child));
}
var itemToRemove = GetItemForElement(child)
?? throw new NotSupportedException($"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 virtual void AddChild(MC.Element child, int physicalSiblingIndex)
{
if (child is null)
{
throw new ArgumentNullException(nameof(child));
}
MC.ShellItem itemToAdd = child switch
{
MC.TemplatedPage childAsTemplatedPage => childAsTemplatedPage, // Implicit conversion
MC.ShellContent childAsShellContent => childAsShellContent, // Implicit conversion
MC.ShellSection childAsShellSection => childAsShellSection, // Implicit conversion
MC.MenuItem childAsMenuItem => childAsMenuItem, // Implicit conversion
MC.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);
}
}