//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
/// <summary>
/// A null-safe wrapper around Freezable.Clone(). (If a null
/// is encountered it returns null.)
/// </summary>
internal static Freezable Clone(Freezable freezable)
{
if (freezable == null)
{
return(null);
}
return(freezable.Clone());
}
object IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
Freezable fvalue = value as Freezable;
if (fvalue == null)
{
return(fvalue);
}
return(fvalue.CanFreeze ? fvalue.Clone() : fvalue.GetAsFrozen());
}
private static object GetUpdatedComplexProperty(IViewTextRange target, PropertyReference propertyReference, int index, object value, SceneNode.Modification modification)
{
ReferenceStep firstStep = propertyReference.FirstStep;
IProperty property = target.Platform.Metadata.ResolveProperty((IPropertyId)firstStep);
if (property != null && RichTextBoxRangeElement.IsComplexProperty((IPlatformMetadata)target.Platform.Metadata, property) && propertyReference.Count > 1)
{
PropertyReference subReference = RichTextBoxRangeElement.CreateSubReference(propertyReference);
object target1;
if (target.IsEmpty)
{
target1 = target.GetPropertyValue((IPropertyId)property);
}
else
{
IViewTextPointer viewTextPointer = target.Start;
if (!viewTextPointer.IsAtInsertionPosition)
{
viewTextPointer = viewTextPointer.GetNextInsertionPosition(LogicalDirection.Forward);
}
target1 = !RichTextBoxElement.IsParagraphProperty(propertyReference) ? viewTextPointer.Parent.GetValue(property) : viewTextPointer.Paragraph.GetValue(property);
}
Freezable freezable = target1 as Freezable;
if (freezable != null)
{
target1 = (object)freezable.Clone();
}
if (target1 != null)
{
switch (modification)
{
case SceneNode.Modification.SetValue:
target1 = subReference.SetValue(target1, value);
break;
case SceneNode.Modification.InsertValue:
subReference.Insert(target1, index, value);
break;
case SceneNode.Modification.RemoveValue:
subReference.RemoveAt(target1, index);
break;
default:
throw new InvalidEnumArgumentException("modification", (int)modification, typeof(SceneNode.Modification));
}
}
value = target1;
}
return(value);
}