/// <summary>
/// adds the pseudo class by <see cref="StepBar.Dock"/> property
/// </summary>
/// <param name="context"></param>
public override void Render(DrawingContext context)
{
StepBar stepBar = Parent as StepBar;
Dock currentDock = stepBar.Dock;
if (_lastDock == null || _lastDock.Value != currentDock)
{
pseudoClassesToClear.ForEach(x => Classes.Remove(x));
switch (currentDock)
{
case Dock.Top:
PseudoClasses.Add(StepBar_Dock_Top_Class);
break;
case Dock.Left:
PseudoClasses.Add(StepBar_Dock_Left_Class);
break;
case Dock.Bottom:
PseudoClasses.Add(StepBar_Dock_Bottom_Class);
break;
case Dock.Right:
PseudoClasses.Add(StepBar_Dock_Right_Class);
break;
}
_lastDock = currentDock;
}
base.Render(context);
}
private static int CoerceStepIndex(StepBar stepBar, int stepIndex)
{
int itemsCount = stepBar.Items.OfType <object>().Count();
if (itemsCount == 0 && stepIndex > 0)
{
stepBar._oriStepIndex = stepIndex;
return(0);
}
return(stepIndex < 0
? 0
: stepIndex >= itemsCount
? itemsCount == 0 ? 0 : itemsCount - 1
: stepIndex);
}
/// <summary>
/// calls <see cref="OnStepIndexChanged(int)"/>
/// </summary>
/// <param name="stepBar"></param>
/// <param name="e"></param>
private void OnStepIndexChanged(StepBar stepBar, AvaloniaPropertyChangedEventArgs e)
{
stepBar.OnStepIndexChanged((int)e.NewValue);
}