/// <summary>
/// Called when the control is added to a logical tree.
/// </summary>
/// <param name="e">The event args.</param>
/// <remarks>
/// It is vital that if you override this method you call the base implementation;
/// failing to do so will cause numerous features to not work as expected.
/// </remarks>
protected virtual void OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs e)
{
// This method can be called when a control is already attached to the logical tree
// in the following scenario:
// - ListBox gets assigned Items containing ListBoxItem
// - ListBox makes ListBoxItem a logical child
// - ListBox template gets applied; making its Panel get attached to logical tree
// - That AttachedToLogicalTree signal travels down to the ListBoxItem
if (!_isAttachedToLogicalTree)
{
if (_nameScope == null)
{
_nameScope = NameScope.GetNameScope(this) ?? ((Control)Parent)?._nameScope;
}
if (Name != null)
{
_nameScope?.Register(Name, this);
}
_isAttachedToLogicalTree = true;
PerspexLocator.Current.GetService <IStyler>()?.ApplyStyles(this);
AttachedToLogicalTree?.Invoke(this, e);
}
foreach (var child in LogicalChildren.OfType <Control>())
{
child.OnAttachedToLogicalTree(e);
}
}
/// <summary>
/// Called when the control is added to a logical tree.
/// </summary>
/// <param name="e">The event args.</param>
/// <remarks>
/// It is vital that if you override this method you call the base implementation;
/// failing to do so will cause numerous features to not work as expected.
/// </remarks>
protected virtual void OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs e)
{
if (_nameScope == null)
{
_nameScope = NameScope.GetNameScope(this) ?? ((Control)Parent)?._nameScope;
}
if (Name != null)
{
_nameScope?.Register(Name, this);
}
_isAttachedToLogicalTree = true;
PerspexLocator.Current.GetService <IStyler>()?.ApplyStyles(this);
AttachedToLogicalTree?.Invoke(this, e);
foreach (var child in LogicalChildren.OfType <Control>())
{
child.OnAttachedToLogicalTree(e);
}
}
/// <summary>
/// Called when the control is added to a rooted logical tree.
/// </summary>
/// <param name="e">The event args.</param>
protected virtual void OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs e)
{
AttachedToLogicalTree?.Invoke(this, e);
}
