//------------------------------------------------------
//
// Privte Methods
//
//------------------------------------------------------
#region Private Methods
// Private helper that adds a new UIElementPropertyUndoUnit to the undo stack.
private static void AddPrivate(ITextContainer textContainer, UIElement uiElement, DependencyProperty property, object newValue)
{
UndoManager undoManager = TextTreeUndo.GetOrClearUndoManager(textContainer);
if (undoManager == null)
{
return;
}
object currentValue = uiElement.ReadLocalValue(property);
if (currentValue is Expression)
{
// Can't undo when old value is an expression, so clear the stack.
if (undoManager.IsEnabled)
{
undoManager.Clear();
}
return;
}
if (currentValue.Equals(newValue))
{
// No property change.
return;
}
undoManager.Add(new UIElementPropertyUndoUnit(uiElement, property, currentValue));
}
// Token: 0x06003E29 RID: 15913 RVA: 0x0011D570 File Offset: 0x0011B770
internal static void CreateInsertUndoUnit(TextContainer tree, int symbolOffset, int symbolCount)
{
UndoManager orClearUndoManager = TextTreeUndo.GetOrClearUndoManager(tree);
if (orClearUndoManager == null)
{
return;
}
orClearUndoManager.Add(new TextTreeInsertUndoUnit(tree, symbolOffset, symbolCount));
}
// Token: 0x06003E2D RID: 15917 RVA: 0x0011D670 File Offset: 0x0011B870
internal static TextTreeExtractElementUndoUnit CreateExtractElementUndoUnit(TextContainer tree, TextTreeTextElementNode elementNode)
{
UndoManager orClearUndoManager = TextTreeUndo.GetOrClearUndoManager(tree);
if (orClearUndoManager == null)
{
return(null);
}
TextTreeExtractElementUndoUnit textTreeExtractElementUndoUnit = new TextTreeExtractElementUndoUnit(tree, elementNode);
orClearUndoManager.Add(textTreeExtractElementUndoUnit);
return(textTreeExtractElementUndoUnit);
}
// Token: 0x06003E2B RID: 15915 RVA: 0x0011D5C0 File Offset: 0x0011B7C0
internal static void CreatePropertyUndoUnit(TextElement element, DependencyPropertyChangedEventArgs e)
{
TextContainer textContainer = element.TextContainer;
UndoManager orClearUndoManager = TextTreeUndo.GetOrClearUndoManager(textContainer);
if (orClearUndoManager == null)
{
return;
}
PropertyRecord propertyRecord = default(PropertyRecord);
propertyRecord.Property = e.Property;
propertyRecord.Value = ((e.OldValueSource == BaseValueSourceInternal.Local) ? e.OldValue : DependencyProperty.UnsetValue);
orClearUndoManager.Add(new TextTreePropertyUndoUnit(textContainer, element.TextElementNode.GetSymbolOffset(textContainer.Generation) + 1, propertyRecord));
}
// Token: 0x06003E2C RID: 15916 RVA: 0x0011D638 File Offset: 0x0011B838
internal static TextTreeDeleteContentUndoUnit CreateDeleteContentUndoUnit(TextContainer tree, TextPointer start, TextPointer end)
{
if (start.CompareTo(end) == 0)
{
return(null);
}
UndoManager orClearUndoManager = TextTreeUndo.GetOrClearUndoManager(tree);
if (orClearUndoManager == null)
{
return(null);
}
TextTreeDeleteContentUndoUnit textTreeDeleteContentUndoUnit = new TextTreeDeleteContentUndoUnit(tree, start, end);
orClearUndoManager.Add(textTreeDeleteContentUndoUnit);
return(textTreeDeleteContentUndoUnit);
}
// Token: 0x06002F10 RID: 12048 RVA: 0x000D4A50 File Offset: 0x000D2C50
private static void AddPrivate(ITextContainer textContainer, UIElement uiElement, DependencyProperty property, object newValue)
{
UndoManager orClearUndoManager = TextTreeUndo.GetOrClearUndoManager(textContainer);
if (orClearUndoManager == null)
{
return;
}
object obj = uiElement.ReadLocalValue(property);
if (obj is Expression)
{
if (orClearUndoManager.IsEnabled)
{
orClearUndoManager.Clear();
}
return;
}
if (obj.Equals(newValue))
{
return;
}
orClearUndoManager.Add(new UIElementPropertyUndoUnit(uiElement, property, obj));
}