/// <summary>
/// Returns true if the child is top aligned with Panel or has no vertical alignment instructions
/// </summary>
private bool IsAlignTopWithPanel(IFrameworkElement child)
{
return(RelativePanel.GetAlignTopWithPanel(child) ||
!(
RelativePanel.GetAlignBottomWithPanel(child) ||
RelativePanel.GetAlignVerticalCenterWithPanel(child) ||
RelativePanel.GetAlignTopWith(child) != null ||
RelativePanel.GetAlignBottomWith(child) != null ||
RelativePanel.GetAbove(child) != null ||
RelativePanel.GetBelow(child) != null
));
}
/// <summary>
/// Gets all the direct dependencies of a FrameworkElement (based on the set AttachedProperties)
/// </summary>
private Dependency[] GetDependencies(UIElement child, IFrameworkElement[] allChildren)
{
var dependencies = new List <Dependency>(Dependency.DependencyTypeCount);
IFrameworkElement element;
element = GetChild(RelativePanel.GetAbove(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.Above));
}
element = GetChild(RelativePanel.GetBelow(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.Below));
}
element = GetChild(RelativePanel.GetLeftOf(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.LeftOf));
}
element = GetChild(RelativePanel.GetRightOf(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.RightOf));
}
element = GetChild(RelativePanel.GetAlignBottomWith(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.AlignBottomWith));
}
element = GetChild(RelativePanel.GetAlignHorizontalCenterWith(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.AlignHorizontalCenterWith));
}
element = GetChild(RelativePanel.GetAlignLeftWith(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.AlignLeftWith));
}
element = GetChild(RelativePanel.GetAlignRightWith(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.AlignRightWith));
}
element = GetChild(RelativePanel.GetAlignTopWith(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.AlignTopWith));
}
element = GetChild(RelativePanel.GetAlignVerticalCenterWith(child), allChildren);
if (element != null)
{
dependencies.Add(new Dependency(element, DependencyType.AlignVerticalCenterWith));
}
return(dependencies.ToArray());
}