private void HideChildContent(ContentPresenter child, TabControlItemData tabControlItemData)
{
#pragma warning disable WPF0041 // Set mutable dependency properties using SetCurrentValue.
child.Content = null;
child.ContentTemplate = null;
tabControlItemData.TabItem.Content = null;
#pragma warning restore WPF0041 // Set mutable dependency properties using SetCurrentValue.
}
/// <summary>
/// Create the child ContentPresenter for the given item (could be data or a TabItem)
/// </summary>
/// <param name="item">The item.</param>
private void CreateChildContentPresenter(object item)
{
if (item == null)
{
return;
}
object dummyObject = null;
if (_wrappedContainers.TryGetValue(item, out dummyObject))
{
return;
}
_wrappedContainers.Add(item, new object());
var cp = FindChildContentPresenter(item);
if (cp != null)
{
return;
}
// the actual child to be added. cp.Tag is a reference to the TabItem
cp = new ContentPresenter();
var container = GetContentContainer(item);
var content = GetContent(item);
var tabItemData = new TabControlItemData(container, content, ContentTemplate, item);
#pragma warning disable WPF0041 // Set mutable dependency properties using SetCurrentValue.
cp.Tag = tabItemData;
#pragma warning restore WPF0041 // Set mutable dependency properties using SetCurrentValue.
if (!IsLazyLoading)
{
ShowChildContent(cp, tabItemData);
}
#pragma warning disable WPF0041 // Set mutable dependency properties using SetCurrentValue.
cp.ContentTemplateSelector = ContentTemplateSelector;
cp.ContentStringFormat = SelectedContentStringFormat;
#pragma warning restore WPF0041 // Set mutable dependency properties using SetCurrentValue.
_itemsHolder.Children.Add(cp);
}
private void ShowChildContent(ContentPresenter child, TabControlItemData tabControlItemData)
{
if (child.Content == null)
{
#pragma warning disable WPF0041 // Set mutable dependency properties using SetCurrentValue.
child.Content = tabControlItemData.Content;
#pragma warning restore WPF0041 // Set mutable dependency properties using SetCurrentValue.
}
if (child.ContentTemplate == null)
{
#pragma warning disable WPF0041 // Set mutable dependency properties using SetCurrentValue.
child.ContentTemplate = tabControlItemData.ContentTemplate;
#pragma warning restore WPF0041 // Set mutable dependency properties using SetCurrentValue.
}
#pragma warning disable WPF0041 // Set mutable dependency properties using SetCurrentValue.
tabControlItemData.TabItem.Content = child;
#pragma warning restore WPF0041 // Set mutable dependency properties using SetCurrentValue.
}
