private static void Expandable_Changed(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
var el = obj as FrameworkElement;
if ((bool)e.NewValue)
{
// the object is marked expandable, wrap it in a ExpandableWrapper.
var parent = el?.Parent as ExpandingStackPanel;
if (parent == null)
{
return;
}
var index = parent.Children.IndexOf(el);
if (index < 0)
{
return;
}
parent.Children.RemoveAt(index);
var wrapper = new ExpandableWrapper(el);
parent.Children.Insert(index, wrapper);
if (DesignerProperties.GetIsInDesignMode(parent))
{
wrapper.Opacity = 0.4;
}
else if (!parent.Expanded)
{
wrapper.Opacity = 0;
if (parent.Orientation == Orientation.Vertical)
{
wrapper.Scale.ScaleY = 0;
}
else if (parent.Orientation == Orientation.Horizontal)
{
wrapper.Scale.ScaleX = 0;
}
el.Focusable = false;
}
}
else
{
// the object is marked not expandable, remove a wrapper if it exists
var wrapper = el?.Parent as ExpandableWrapper;
var parent = wrapper?.Parent as ExpandingStackPanel;
if (parent == null)
{
return;
}
var index = parent.Children.IndexOf(wrapper);
if (index < 0)
{
return;
}
parent.Children.RemoveAt(index);
parent.Children.Insert(index, el);
el.Focusable = wrapper.ChildFocusableDefault;
}
}
private static void Expandable_Changed(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
var el = obj as FrameworkElement;
if ((bool)e.NewValue)
{
// the object is marked expandable, wrap it in a ExpandableWrapper.
var parent = el?.Parent as ExpandingStackPanel;
if (parent == null)
return;
var index = parent.Children.IndexOf(el);
if (index < 0)
return;
parent.Children.RemoveAt(index);
var wrapper = new ExpandableWrapper(el);
parent.Children.Insert(index, wrapper);
if (DesignerProperties.GetIsInDesignMode(parent))
{
wrapper.Opacity = 0.4;
}
else if (!parent.Expanded)
{
wrapper.Opacity = 0;
if (parent.Orientation == Orientation.Vertical)
wrapper.Scale.ScaleY = 0;
else if (parent.Orientation == Orientation.Horizontal)
wrapper.Scale.ScaleX = 0;
el.Focusable = false;
}
}
else
{
// the object is marked not expandable, remove a wrapper if it exists
var wrapper = el?.Parent as ExpandableWrapper;
var parent = wrapper?.Parent as ExpandingStackPanel;
if (parent == null)
return;
var index = parent.Children.IndexOf(wrapper);
if (index < 0)
return;
parent.Children.RemoveAt(index);
parent.Children.Insert(index, el);
el.Focusable = wrapper.ChildFocusableDefault;
}
}
