Пример #1
0
    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();
    }
Пример #2
0
        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();
        }
Пример #3
0
    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();
    }