private static ModelItem FindActivityModelItem(ModelTreeManager modelTreeManager, Activity errorTarget)
{
// Search the lowest Activity
ModelItem lowestModelItem = null;
List <Activity> parentChain = GetParentChain(errorTarget);
Fx.Assert(parentChain != null, "Cannot find parent chain for " + errorTarget.DisplayName);
foreach (Activity parent in parentChain)
{
lowestModelItem = modelTreeManager.GetModelItem(parent);
if (lowestModelItem != null)
{
break;
}
}
ModelItem foundItem = null;
// Find in nearest parent first.
if (lowestModelItem != null)
{
// The foundItem could be null because lowestModelItem is not errorTarget's parent any more.
// This happens if background validation hasn't finished updating errorTarget's parent.
foundItem = ModelTreeManager.FindFirst(lowestModelItem, (modelItem) => (modelItem.GetCurrentValue() == errorTarget));
}
// Not found, search from root.
if (foundItem == null)
{
foundItem = FindActivityModelItemFromRoot(modelTreeManager, errorTarget);
}
return(foundItem);
}
// Find model item and properly create it if necessary.
internal static ModelItem FindModelItem(ModelTreeManager modelTreeManager, object sourceDetail)
{
if (sourceDetail == null)
{
return(null);
}
Fx.Assert(modelTreeManager != null, "modelTreeManager != null");
Activity element = sourceDetail as Activity;
object errorTarget = sourceDetail;
// if source detail is not an Activity, we just expand the model tree to search it.
if (element == null)
{
return(ModelTreeManager.FindFirst(modelTreeManager.Root, (modelItem) => (modelItem.GetCurrentValue() == errorTarget)));
}
else
{
return(FindActivityModelItem(modelTreeManager, element));
}
}
private static ModelItem FindActivityModelItemFromRoot(ModelTreeManager modelTreeManager, Activity errorTarget)
{
ModelItem root = modelTreeManager.Root;
Fx.Assert(root != null && errorTarget != null, "root != null && errorTarget != null");
ModelProperty property = root.Properties["Properties"];
ModelItem propertiesModelItem = property == null ? null : property.Value;
ModelItem foundItem = null;
if (propertiesModelItem != null)
{
// So,search "Properties" first to delay expanding "Implementation" and other properties.
foundItem = ModelTreeManager.FindFirst(propertiesModelItem, (modelItem) => (modelItem.GetCurrentValue() == errorTarget));
}
// If activity is not in Properties, expand others except Properties.
foundItem = foundItem ?? ModelTreeManager.FindFirst(
root,
(modelItem) => (modelItem.GetCurrentValue() == errorTarget),
(modelItem) => { return(modelItem != propertiesModelItem); });
return(foundItem);
}