protected override object GetComputedValueInternal(PropertyReference propertyReference)
{
if (this.IsTextRangeProperty(propertyReference))
{
if (!this.ShouldForwardPropertyChangeToControl(propertyReference))
{
PropertyReference propertyReference1 = this.ConvertToPlatformPropertyReference(propertyReference);
object textValue = this.GetTextValue(this.TextRange, propertyReference1);
object obj = textValue;
if (textValue != MixedProperty.Mixed)
{
PropertyReference propertyReference2 = DesignTimeProperties.GetShadowPropertyReference(propertyReference1, (ITypeId)null);
if (propertyReference2 != null)
{
IViewObject parent = this.TextRange.Start.Parent;
obj = DesignTimeProperties.UseShadowPropertyForInstanceBuilding(this.DocumentContext.TypeResolver, (IPropertyId)propertyReference[0]) ? parent.GetCurrentValue(propertyReference2) : SceneNode.GetComputedValueWithShadowCoercion(propertyReference1, propertyReference2, parent.PlatformSpecificObject);
}
}
return(this.ConvertFromWpfValue(obj));
}
propertyReference = this.DesignerContext.PropertyManager.FilterProperty((SceneNode)this.TextEditProxy.TextSource, propertyReference);
}
if (propertyReference != null)
{
return(this.TextEditProxy.TextSource.GetComputedValue(propertyReference));
}
return((object)null);
}
private void ModifyTextValue(IViewTextRange textRange, PropertyReference propertyReference, int index, object value, SceneNode.Modification modification)
{
if (value is Microsoft.Expression.DesignModel.DocumentModel.DocumentNode || value is MarkupExtension)
{
return;
}
PerformanceUtility.MeasurePerformanceUntilRender(PerformanceEvent.TextSetProperty);
value = RichTextBoxRangeElement.GetUpdatedComplexProperty(textRange, propertyReference, index, value, modification);
ReferenceStep firstStep = propertyReference.FirstStep;
IProperty property = textRange.Platform.Metadata.ResolveProperty((IPropertyId)firstStep);
if (property != null)
{
if (modification == SceneNode.Modification.ClearValue)
{
value = this.ViewModel.DefaultView.ConvertToWpfValue(this.ViewModel.DefaultView.ConvertFromWpfPropertyReference(propertyReference).LastStep.GetDefaultValue(typeof(object)));
}
if (property.Equals((object)RichTextBoxRangeElement.TextIndentPropertyId) && (double)value < 0.0)
{
value = (object)0.0;
}
textRange.ApplyPropertyValue((IPropertyId)property, value);
bool flag = RichTextBoxElement.IsParagraphProperty(propertyReference);
PropertyReference propertyReference1 = DesignTimeProperties.GetShadowPropertyReference(propertyReference, (ITypeId)this.Type);
if (propertyReference1 != null && !DesignTimeProperties.UseShadowPropertyForInstanceBuilding(this.ViewModel.Document.DocumentContext.TypeResolver, (IPropertyId)propertyReference1.FirstStep))
{
propertyReference1 = (PropertyReference)null;
}
if (modification == SceneNode.Modification.ClearValue && propertyReference1 == null)
{
propertyReference1 = propertyReference;
}
if (propertyReference1 != null)
{
IViewTextElement viewTextElement1 = (IViewTextElement)null;
if (textRange.Start.CompareTo(textRange.End) != 0 || textRange.Start.CompareTo(((IViewTextElement)textRange.Start.Parent).ContentStart) != 0 && textRange.Start.CompareTo(((IViewTextElement)textRange.Start.Parent).ContentEnd) != 0)
{
for (IViewTextPointer viewTextPointer = textRange.Start; viewTextPointer != null && viewTextPointer.CompareTo(textRange.End) <= 0; viewTextPointer = viewTextPointer.GetNextInsertionPosition(LogicalDirection.Forward))
{
IViewTextElement viewTextElement2 = viewTextPointer.Parent as IViewTextElement;
if (viewTextElement2 != null && (viewTextElement1 == null || viewTextElement1.PlatformSpecificObject != viewTextElement2.PlatformSpecificObject))
{
viewTextElement1 = viewTextElement2;
if (viewTextElement1 != null && (flag && viewTextElement1 is Paragraph || !flag && viewTextElement1 is Run))
{
if (modification == SceneNode.Modification.ClearValue)
{
propertyReference1.ClearValue((object)viewTextElement1);
}
else
{
propertyReference1.SetValue((object)viewTextElement1, value);
}
}
}
}
}
}
}
if (property.Equals((object)RichTextBoxRangeElement.ForegroundProperty) || property.Equals((object)RichTextBoxRangeElement.TextElementForegroundProperty))
{
TextBlockEditProxy textBlockEditProxy = this.TextEditProxy as TextBlockEditProxy;
if (textBlockEditProxy != null)
{
textBlockEditProxy.UpdateCaretBrush();
}
}
if (this.TextEditProxy == null)
{
return;
}
this.TextEditProxy.Serialize();
this.TextEditProxy.UpdateDocumentModel();
}