public void AddElements(IList <T> elements, TreeElement parent, int insertPosition) { if (elements == null) { throw new ArgumentNullException("elements", "elements is null"); } if (elements.Count == 0) { throw new ArgumentNullException("elements", "elements Count is 0: nothing to add"); } if (parent == null) { throw new ArgumentNullException("parent", "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(m_Root, m_Data); Changed(); }
public void MoveElements(TreeElement parentElement, int insertionIndex, List <TreeElement> elements) { if (insertionIndex < 0) { throw new ArgumentException( "Invalid input: insertionIndex is -1, client needs to decide what index elements should be reparented at"); } // Invalid reparenting input if (parentElement == null) { return; } // We are moving items so we adjust the insertion index to accomodate that any items above the insertion index is removed before inserting if (insertionIndex > 0) { insertionIndex -= parentElement.children.GetRange(0, insertionIndex).Count(elements.Contains); } // Remove draggedItems from their parents foreach (var draggedItem in elements) { draggedItem.parent.children.Remove(draggedItem); // remove from old parent draggedItem.parent = parentElement; // set new parent } if (parentElement.children == null) { parentElement.children = new List <TreeElement>(); } // Insert dragged items under new parent parentElement.children.InsertRange(insertionIndex, elements); TreeElementUtility.UpdateDepthValues(root); TreeElementUtility.TreeToList(m_Root, m_Data); Changed(); }
public void AddElement(T element, TreeElement parent, int insertPosition) { if (element == null) { throw new ArgumentNullException("element", "element is null"); } if (parent == null) { throw new ArgumentNullException("parent", "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(m_Root, m_Data); Changed(); }