Ejemplo n.º 1
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();
        }
Ejemplo n.º 2
0
        public void RemoveElements(IList <T> elements)
        {
            foreach (var element in elements)
            {
                if (element == m_Root)
                {
                    throw new ArgumentException("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(m_Root, m_Data);

            Changed();
        }
Ejemplo n.º 3
0
        public static void TestTreeModelCanRemoveElements()
        {
            var root = new TreeElement {
                name = "Root", depth = -1
            };
            var listOfElements = new List <TreeElement>();

            listOfElements.Add(root);

            var model = new TreeModel <TreeElement>(listOfElements);

            model.AddElement(new TreeElement {
                name = "Element"
            }, root, 0);
            model.AddElement(new TreeElement {
                name = "Element " + root.children.Count
            }, root, 0);
            model.AddElement(new TreeElement {
                name = "Element " + root.children.Count
            }, root, 0);
            model.AddElement(new TreeElement {
                name = "Sub Element"
            }, root.children[1], 0);

            model.RemoveElements(new[] { root.children[1].children[0], root.children[1] });

            // Assert order is correct
            string[] namesInCorrectOrder = { "Root", "Element 2", "Element" };
            Assert.AreEqual(namesInCorrectOrder.Length, listOfElements.Count, "Result count does not match");
            for (int i = 0; i < namesInCorrectOrder.Length; ++i)
            {
                Assert.AreEqual(namesInCorrectOrder[i], listOfElements[i].name);
            }

            // Assert depths are valid
            TreeElementUtility.ValidateDepthValues(listOfElements);
        }
Ejemplo n.º 4
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();
        }