protected override void AdjustIndexAfterRemovingFromSceneView()
{
ITextFlowSceneNode textFlowSceneNode = this.InsertionPoint.Element as ITextFlowSceneNode;
if (textFlowSceneNode != null && textFlowSceneNode.ContentStart != null && (this.insertionPositionToAdjust != null && this.insertionPositionToAdjust.IsInSameDocument(textFlowSceneNode.ContentStart)))
{
this.InsertionPoint.Index = textFlowSceneNode.ContentStart.GetOffsetToPosition(this.insertionPositionToAdjust);
}
this.insertionPositionToAdjust = (IViewTextPointer)null;
}
protected override void AdjustIndexBeforeRemovingFromSceneView()
{
ITextFlowSceneNode textFlowSceneNode = this.InsertionPoint.Element as ITextFlowSceneNode;
if (textFlowSceneNode == null || textFlowSceneNode.ContentStart == null)
{
return;
}
this.insertionPositionToAdjust = textFlowSceneNode.ContentStart.GetPositionAtOffset(this.InsertionPoint.Index);
}
public override void DeleteSelection()
{
if (this.richTextBox.Selection.IsEmpty)
{
IViewTextPointer insertionPosition = this.richTextBox.Selection.End.GetNextInsertionPosition(LogicalDirection.Forward);
if (insertionPosition != null)
{
this.richTextBox.Selection.Select(this.richTextBox.Selection.Start, insertionPosition);
}
}
this.richTextBox.Selection.Text = string.Empty;
}
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);
}
protected override bool GetInsertionInfo(SceneElement container, int insertionIndex, bool isCursorAtEnd, out Point position, out double length, out Orientation orientation)
{
orientation = Orientation.Horizontal;
IViewTextPointer pointerFromIndex = this.GetTextPointerFromIndex(insertionIndex, isCursorAtEnd);
if (pointerFromIndex != null && pointerFromIndex.HasValidLayout)
{
Rect characterRect = pointerFromIndex.GetCharacterRect(LogicalDirection.Forward);
position = characterRect.TopLeft;
length = characterRect.Height;
return(true);
}
position = new Point();
length = 0.0;
return(false);
}
internal override object GetTextValueAtPoint(Point point, bool snapToText, PropertyReference propertyReference)
{
IViewTextPointer positionFromPoint = this.RichTextBox.GetPositionFromPoint(point);
PropertyReference propertyReference1 = this.DesignerContext.PropertyManager.FilterProperty((ITypeResolver)this.ProjectContext, positionFromPoint.Parent.GetIType((ITypeResolver)this.ProjectContext), propertyReference);
if (propertyReference1 == null)
{
return(this.GetComputedValue(propertyReference));
}
object textPointerValue = RichTextBoxRangeElement.GetTextPointerValue(positionFromPoint, propertyReference1);
if (DependencyProperty.UnsetValue == textPointerValue)
{
return(MixedProperty.Mixed);
}
return(textPointerValue);
}
protected override void UpdateInsertionPoint()
{
this.ClearAdorner();
this.InsertionPoint.Element = this.LayoutContainer;
ITextFlowSceneNode textFlowSceneNode = this.InsertionPoint.Element as ITextFlowSceneNode;
Point mousePosition = this.InsertionPoint.Element.ViewModel.DefaultView.GetMousePosition(this.Pointer, MoveStrategy.GetContainerHost((SceneElement)this.InsertionPoint.Element));
IViewTextPointer positionFromPoint = textFlowSceneNode.GetPositionFromPoint(mousePosition);
IViewTextPointer position = positionFromPoint != null?positionFromPoint.GetInsertionPosition(LogicalDirection.Forward) : textFlowSceneNode.ContentEnd.GetNextInsertionPosition(LogicalDirection.Backward);
this.InsertionPoint.IsCursorAtEnd = false;
if (textFlowSceneNode.ContentStart == null)
{
this.InsertionPoint.IsCursorAtEnd = true;
}
else
{
this.InsertionPoint.Index = textFlowSceneNode.ContentStart.GetOffsetToPosition(position);
this.AdornerSet = (AdornerSet) new TextFlowInsertionPointAdornerSet(this.ToolContext, this.LayoutContainer, (TextFlowInsertionPoint)this.InsertionPoint);
this.ActiveView.AdornerLayer.Add((IAdornerSet)this.AdornerSet);
}
}
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();
}
public static object GetTextPointerValue(IViewTextPointer textPointer, PropertyReference propertyReference)
{
return(textPointer.Parent.GetValue(propertyReference));
}
