protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
{
_logicalRoot = null;
base.OnDetachedFromLogicalTree(e);
foreach (var l in _layers)
{
((ILogical)l).NotifyDetachedFromLogicalTree(e);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="LogicalTreeAttachmentEventArgs"/> class.
/// </summary>
/// <param name="root">The root of the logical tree.</param>
/// <param name="source">The control being attached/detached.</param>
/// <param name="parent">The <see cref="Parent"/>.</param>
public LogicalTreeAttachmentEventArgs(
ILogicalRoot root,
ILogical source,
ILogical?parent)
{
Root = root ?? throw new ArgumentNullException(nameof(root));
Source = source ?? throw new ArgumentNullException(nameof(source));
Parent = parent;
}
protected override void OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs e)
{
base.OnAttachedToLogicalTree(e);
_logicalRoot = e.Root;
foreach (var l in _layers)
{
((ILogical)l).NotifyAttachedToLogicalTree(e);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="LogicalTreeAttachmentEventArgs"/> class.
/// </summary>
/// <param name="root">The root of the logical tree.</param>
/// <param name="source">The control being attached/detached.</param>
/// <param name="parent">The <see cref="Parent"/>.</param>
public LogicalTreeAttachmentEventArgs(
ILogicalRoot root,
ILogical source,
ILogical parent)
{
Contract.Requires <ArgumentNullException>(root != null);
Contract.Requires <ArgumentNullException>(source != null);
Root = root;
Source = source;
Parent = parent;
}
/// <summary>
/// Initializes a new instance of the <see cref="StyledElement"/> class.
/// </summary>
public StyledElement()
{
_logicalRoot = this as ILogicalRoot;
}