/// <summary>
/// Calls the <see cref="OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs)"/> method
/// for this control and all of its visual descendents.
/// </summary>
/// <param name="e">The event args.</param>
private void NotifyDetachedFromVisualTree(VisualTreeAttachmentEventArgs e)
{
_visualLogger.Verbose("Detached from visual tree");
VisualRoot = null;
OnDetachedFromVisualTree(e);
if (VisualChildren != null)
{
foreach (Visual child in VisualChildren.OfType <Visual>())
{
child.NotifyDetachedFromVisualTree(e);
}
}
}
/// <summary>
/// Calls the <see cref="OnAttachedToVisualTree(VisualTreeAttachmentEventArgs)"/> method
/// for this control and all of its visual descendents.
/// </summary>
/// <param name="e">The event args.</param>
private void NotifyAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
{
_visualLogger.Verbose("Attached to visual tree");
VisualRoot = e.Root;
OnAttachedToVisualTree(e);
if (VisualChildren != null)
{
foreach (Visual child in VisualChildren.OfType <Visual>())
{
child.NotifyAttachedToVisualTree(e);
}
}
}
/// <summary>
/// Calls the <see cref="OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs)"/> method
/// for this control and all of its visual descendents.
/// </summary>
/// <param name="e">The event args.</param>
protected virtual void OnDetachedFromVisualTreeCore(VisualTreeAttachmentEventArgs e)
{
Logger.Verbose(LogArea.Visual, this, "Detached from visual tree");
VisualRoot = null;
if (RenderTransform != null)
{
RenderTransform.Changed -= RenderTransformChanged;
}
OnDetachedFromVisualTree(e);
if (VisualChildren != null)
{
foreach (Visual child in VisualChildren.OfType <Visual>())
{
child.OnDetachedFromVisualTreeCore(e);
}
}
}
/// <summary>
/// Calls the <see cref="OnAttachedToVisualTree(VisualTreeAttachmentEventArgs)"/> method
/// for this control and all of its visual descendants.
/// </summary>
/// <param name="e">The event args.</param>
protected virtual void OnAttachedToVisualTreeCore(VisualTreeAttachmentEventArgs e)
{
Logger.Verbose(LogArea.Visual, this, "Attached to visual tree");
_visualRoot = e.Root;
if (RenderTransform != null)
{
RenderTransform.Changed += RenderTransformChanged;
}
OnAttachedToVisualTree(e);
AttachedToVisualTree?.Invoke(this, e);
InvalidateVisual();
if (VisualChildren != null)
{
foreach (Visual child in VisualChildren.OfType <Visual>())
{
child.OnAttachedToVisualTreeCore(e);
}
}
}
/// <summary>
/// Calls the <see cref="OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs)"/> method
/// for this control and all of its visual descendants.
/// </summary>
/// <param name="e">The event args.</param>
protected virtual void OnDetachedFromVisualTreeCore(VisualTreeAttachmentEventArgs e)
{
Logger.TryGet(LogEventLevel.Verbose)?.Log(LogArea.Visual, this, "Detached from visual tree");
_visualRoot = null;
if (RenderTransform != null)
{
RenderTransform.Changed -= RenderTransformChanged;
}
OnDetachedFromVisualTree(e);
DetachedFromVisualTree?.Invoke(this, e);
e.Root?.Renderer?.AddDirty(this);
if (VisualChildren != null)
{
foreach (Visual child in VisualChildren.OfType <Visual>())
{
child.OnDetachedFromVisualTreeCore(e);
}
}
}