public void MoveElements(TreeElement parentElement, int insertionIndex, List <TreeElement> elements) { if (insertionIndex < 0) { throw new ArgumentException(Maintainer.ConstructError("Invalid input: insertionIndex is -1, client needs to decide what index elements should be reparented at!")); } if (parentElement == null) { return; } if (insertionIndex > 0) { insertionIndex -= parentElement.children.GetRange(0, insertionIndex).Count(elements.Contains); } foreach (var draggedItem in elements) { draggedItem.parent.children.Remove(draggedItem); draggedItem.parent = parentElement; } if (parentElement.children == null) { parentElement.children = new List <TreeElement>(); } parentElement.children.InsertRange(insertionIndex, elements); TreeElementUtility.UpdateDepthValues(root); TreeElementUtility.TreeToList(root, data); Changed(); }
public void AddElements(IList <T> elements, TreeElement parent, int insertPosition) { if (elements == null) { throw new ArgumentNullException("elements", Maintainer.ConstructError("elements is null!")); } if (elements.Count == 0) { throw new ArgumentNullException("elements", Maintainer.ConstructError("elements Count is 0: nothing to add!")); } if (parent == null) { throw new ArgumentNullException("parent", Maintainer.ConstructError("parent is null!")); } if (parent.children == null) { parent.children = new List <TreeElement>(); } parent.children.InsertRange(insertPosition, elements.Cast <TreeElement> ()); foreach (var element in elements) { element.parent = parent; element.depth = parent.depth + 1; TreeElementUtility.UpdateDepthValues(element); } TreeElementUtility.TreeToList(root, data); Changed(); }
public void RemoveElements(IList <T> elements) { foreach (var element in elements) { if (element == root) { throw new ArgumentException(Maintainer.ConstructError("It is not allowed to remove the root element!")); } } var commonAncestors = TreeElementUtility.FindCommonAncestorsWithinList(elements); foreach (var element in commonAncestors) { element.parent.children.Remove(element); element.parent = null; } TreeElementUtility.TreeToList(root, data); Changed(); }
public void AddElement(T element, TreeElement parent, int insertPosition) { if (element == null) { throw new ArgumentNullException("element", Maintainer.ConstructError("element is null!")); } if (parent == null) { throw new ArgumentNullException("parent", Maintainer.ConstructError("parent is null!")); } if (parent.children == null) { parent.children = new List <TreeElement> (); } parent.children.Insert(insertPosition, element); element.parent = parent; TreeElementUtility.UpdateDepthValues(parent); TreeElementUtility.TreeToList(root, data); Changed(); }