private static ValueTypeChange ValueTypeChangeFor(TreeGridNode node, int depth)
{
IType omnType = FieldTypeFor(node);
if (omnType.IsCollection || omnType.IsArray)
{
return(null);
}
Type type = Type.GetType(omnType.FullName);
if (type == null)
{
return(null);
}
if (type.IsValueType)
{
ValueTypeChange change = ValueTypeChangeFor(node.Parent, depth + 1);
if (change != null)
{
change.FieldPath.Add(FieldInfoFor(node));
}
return(change);
}
return(depth == 0 ? null : new ValueTypeChange(node.Tag));
}
/**
* Each node in "details view" holds a reference for its corresponding
* object in the object model. While this works fine with reference
* types, it fails miserably with nested value types.
*
* For more details see OMNUnitTest.RenderHierarchyTestCase.
*/
public static bool TryUpdateValueType(TreeGridNode node, object newValue)
{
if (node == null || node.Parent == null)
{
return(false);
}
ValueTypeChange change = ValueTypeChangeFor(node.Parent, 0);
if (change == null)
{
return(false);
}
FieldInfo fieldInfo = FieldInfoFor(node);
if (fieldInfo == null)
{
return(false);
}
fieldInfo.SetValueDirect(TypedReference.MakeTypedReference(change.TargetObject, change.FieldPath.ToArray()), newValue);
return(true);
}
public static void PropagateValueTypeChanges(ValueTypeChange[] changes)
{
foreach (ValueTypeChange change in changes)
{
if (!(change.Value is ValueType)) break;
try
{
SetProperty(change.Target, change.Member, change.Value);
}
catch (MissingFieldException)
{
// hit a readonly property
break;
}
}
}
