public void play(FeaturesContainer featuresContainer)
{
if (operationType == UndoElementType.DeletePolylinePoint)
{
Debug.Assert(point != null);
PolylineFeature polyline = (PolylineFeature)featuresContainer.getFeature(featureIndex);
polyline.m_oParts[partIndex].Points.Insert(pointIndex, point);
point.Selected = false;
featuresContainer.boundsDirty();
}
else if (operationType == UndoElementType.DeletePolylinePart)
{
Debug.Assert(part != null);
PolylineFeature polyline = (PolylineFeature)featuresContainer.getFeature(featureIndex);
polyline.m_oParts.Insert(partIndex, part);
featuresContainer.boundsDirty();
}
else if (operationType == UndoElementType.DeleteFeature)
{
Debug.Assert(feature != null);
featuresContainer.insertFeature(featureIndex, feature);
feature.Selected = false;
featuresContainer.boundsDirty();
}
else if (operationType == UndoElementType.MovePolylinePoint)
{
Debug.Assert(point != null);
point.X = originalPoint.X;
point.Y = originalPoint.Y;
point.Selected = false;
featuresContainer.boundsDirty();
// TODO: use featuresContainer to modify contents
}
else if (operationType == UndoElementType.MoveFeature)
{
Debug.Assert(feature != null);
// undo feature move
if (feature is SymbolFeature)
{
SymbolFeature sf = (SymbolFeature)feature;
Debug.Assert(originalFeature is SymbolFeature);
sf.x = ((SymbolFeature)originalFeature).x;
sf.y = ((SymbolFeature)originalFeature).y;
}
}
else if (operationType == UndoElementType.InsertFeature)
{
featuresContainer.removeFeature(featureIndex);
}
else throw new Exception("Internal error.");
}
public UndoManager(FeaturesContainer featuresContainer)
{
if (featuresContainer == null) throw new Exception("Invalid parameter");
this.featuresContainer = featuresContainer;
}
internal void setParentContainer(FeaturesContainer layer)
{
parentContainer = layer;
}
