private DataTemplate?LayoutTemplate(BuildTreeNodeViewModel buildNode, FrameworkElement element)
{
if (buildNode == null)
{
return(null);
}
// display groups with the least possible grouping. Therefore start with the smallest grouping (level 4) and extend to the biggest (level 1)
// in other words, for 3 nested groups, the layout for a fourth group level is not needed. However this fourth group WOULD not be level 4, it would be level 1.
// Therefore with 3 groups, display the DataTemplates 4, 3, 2.
var distanceToDeepestLevel = buildNode.MaxTreeDepth - buildNode.CurrentTreeLevelDepth;
var levelToDisplay = Math.Max(1, 4 - distanceToDeepestLevel); // 4 is the maximum of supported depths, beyond that display every group the same as level 1
switch (levelToDisplay)
{
default:
return(element.TryFindResource("FirstLevelTemplate") as DataTemplate);
case 2:
return(element.TryFindResource("SecondLevelTemplate") as DataTemplate);
case 3:
return(element.TryFindResource("ThirdLevelTemplate") as DataTemplate);
case 4:
return(element.TryFindResource("FourthLevelTemplate") as DataTemplate);
}
}
public Brush Convert(BuildTreeNodeViewModel node)
{
if (node.ShouldColorByStatus)
{
return(Convert(node.BuildStatus));
}
return(GetBrush(DefaultBrushKey));
}
private DataTemplate?DisplayTemplate(BuildTreeNodeViewModel node, FrameworkElement element)
{
return(DataTemplateByName(node, element));
}