//Calculates whether ShowExpanded for a given WorklfowViewElement should be true or false.
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
ModelItem modelItem = (ModelItem)values[0];
bool isRootDesigner = (bool)values[1];
bool shouldExpandAll = (bool)values[2];
bool shouldCollapseAll = (bool)values[3];
bool expandState = (bool)values[4];
bool pinState = (bool)values[5];
WorkflowViewElement viewElement = (WorkflowViewElement)values[6];
//Pinstate should be false in following cases (Designer should be unpinned in following cases):
//1. ExpandAll is not enabled.
//2. ExpandAll is enabled and ExpandState is true.
//Similarly for Collapse All.
if ((!shouldExpandAll || expandState) &&
(!shouldCollapseAll || !expandState))
{
viewElement.PinState = false;
}
if (viewElement.IsAncestorOfRootDesigner)
{
return(true);
}
return(ViewUtilities.ShouldShowExpanded(isRootDesigner, viewElement.DoesParentAlwaysExpandChild(),
viewElement.DoesParentAlwaysCollapseChildren(), expandState, shouldExpandAll, shouldCollapseAll, viewElement.PinState));
}
public static Visibility GetExpandCollapseButtonVisibility(WorkflowViewElement viewElement)
{
ActivityDesigner designer = viewElement as ActivityDesigner;
bool hasDelegates = (designer != null) && designer.HasActivityDelegates;
Visibility visibility = Visibility.Visible;
if (viewElement == null || viewElement.IsRootDesigner || viewElement.DoesParentAlwaysExpandChild() ||
viewElement.DoesParentAlwaysCollapseChildren() || (viewElement.Content == null && !hasDelegates) ||
!viewElement.Collapsible || !(viewElement is ActivityDesigner))
{
visibility = Visibility.Collapsed;
}
return visibility;
}
public static Visibility GetExpandCollapseButtonVisibility(WorkflowViewElement viewElement)
{
ActivityDesigner designer = viewElement as ActivityDesigner;
bool hasDelegates = (designer != null) && designer.HasActivityDelegates;
Visibility visibility = Visibility.Visible;
if (viewElement == null || viewElement.IsRootDesigner || viewElement.DoesParentAlwaysExpandChild() ||
viewElement.DoesParentAlwaysCollapseChildren() || (viewElement.Content == null && !hasDelegates) ||
!viewElement.Collapsible || !(viewElement is ActivityDesigner))
{
visibility = Visibility.Collapsed;
}
return(visibility);
}
