public PropertyDictionaryChangeUndoUnit(DocumentCompositeNode node, IProperty propertyKey, SourceContextContainer <DocumentNode> oldValue, SourceContextContainer <DocumentNode> newValue)
{
this.node = node;
this.propertyKey = propertyKey;
this.oldValue = oldValue;
this.newValue = newValue;
}
private void Toggle()
{
this.node.ApplyPropertyChange(this.propertyKey, this.oldValue, this.newValue);
SourceContextContainer <DocumentNode> contextContainer = this.oldValue;
this.oldValue = this.newValue;
this.newValue = contextContainer;
}
public override UndoUnitMergeResult Merge(IUndoUnit otherUnit, out IUndoUnit mergedUnit)
{
mergedUnit = (IUndoUnit)null;
SceneXamlDocument.PropertyDictionaryChangeUndoUnit dictionaryChangeUndoUnit = otherUnit as SceneXamlDocument.PropertyDictionaryChangeUndoUnit;
if (dictionaryChangeUndoUnit == null || dictionaryChangeUndoUnit.node != this.node || dictionaryChangeUndoUnit.propertyKey != this.propertyKey)
{
return(UndoUnitMergeResult.CouldNotMerge);
}
if (SourceContextContainer <DocumentNode> .ContentReferenceEquals(dictionaryChangeUndoUnit.oldValue, this.newValue))
{
return(UndoUnitMergeResult.MergedIntoNothing);
}
mergedUnit = (IUndoUnit) new SceneXamlDocument.PropertyDictionaryChangeUndoUnit(this.node, this.propertyKey, dictionaryChangeUndoUnit.oldValue, this.newValue);
return(UndoUnitMergeResult.MergedIntoOneUnit);
}
public override void ApplyPropertyChange(DocumentCompositeNode node, IProperty propertyKey, SourceContextContainer <DocumentNode> oldValue, SourceContextContainer <DocumentNode> newValue)
{
if (this.undoService != null)
{
this.undoService.Add((IUndoUnit) new SceneXamlDocument.PropertyDictionaryChangeUndoUnit(node, propertyKey, oldValue, newValue));
}
else
{
base.ApplyPropertyChange(node, propertyKey, oldValue, newValue);
}
}