/// <summary>
/// Sets the templated parent, with the ability to control the propagation of the templated parent.
/// </summary>
/// <param name="templatedParent">The parent to apply.</param>
/// <param name="applyToChildren">
/// Applies the templated parent to children if true. False is generally used when a control is template-able
/// to avoid propagating its own templated parent to its children.
/// </param>
public void SetTemplatedParent(FrameworkElement templatedParent)
{
try
{
if (_isApplyingTemplateBindings || _bindingsSuspended)
{
// If we reach this point, this means that a propagation loop has been detected, and
// we can skip the current binder.
// This can happen if a DependencyObject-typed DependencyProperty contains a reference
// to one of its ancestors.
return;
}
_isApplyingTemplateBindings = true;
if (this.Log().IsEnabled(Microsoft.Extensions.Logging.LogLevel.Debug))
{
this.Log().DebugFormat(
"{0}.ApplyTemplateBindings({1}/{2}) (h:{3:X8})",
_originalObjectType.ToString(),
templatedParent?.GetType().ToString() ?? "[null]",
templatedParent?.GetHashCode().ToString("X8", CultureInfo.InvariantCulture) ?? "[null]",
ActualInstance?.GetHashCode()
);
}
_properties.ApplyTemplatedParent(templatedParent);
ApplyChildrenBindable(templatedParent, isTemplatedParent: true);
}
finally
{
_isApplyingTemplateBindings = false;
}
}
public void SetTemplatedParent(FrameworkElement?templatedParent)
{
#if !HAS_EXPENSIVE_TRYFINALLY
// The try/finally incurs a very large performance hit in mono-wasm, and SetValue is in a very hot execution path.
// See https://github.com/mono/mono/issues/13653 for more details.
try
#endif
{
if (_isApplyingTemplateBindings || _bindingsSuspended)
{
// If we reach this point, this means that a propagation loop has been detected, and
// we can skip the current binder.
// This can happen if a DependencyObject-typed DependencyProperty contains a reference
// to one of its ancestors.
return;
}
_isApplyingTemplateBindings = true;
if (this.Log().IsEnabled(Microsoft.Extensions.Logging.LogLevel.Debug))
{
this.Log().DebugFormat(
"{0}.ApplyTemplateBindings({1}/{2}) (h:{3:X8})",
_originalObjectType.ToString(),
templatedParent?.GetType().ToString() ?? "[null]",
templatedParent?.GetHashCode().ToString("X8", CultureInfo.InvariantCulture) ?? "[null]",
ActualInstance?.GetHashCode()
);
}
_properties.ApplyTemplatedParent(templatedParent);
ApplyChildrenBindable(templatedParent, isTemplatedParent: true);
}
#if !HAS_EXPENSIVE_TRYFINALLY
finally
#endif
{
_isApplyingTemplateBindings = false;
}
}
private string GetOwnerDebugString() => ActualInstance?.GetType().ToString() ?? "[collected]";
