protected override void InitializeCore()
{
ShowDebug = true;
_stage = new Stage(Context.GraphicsDevice);
Context.Input.Processor = _stage;
Skin skin = new Skin(Context.GraphicsDevice, "Data/uiskin.json");
Table table = new Table();
table.SetFillParent(true);
_stage.AddActor(table);
Tree tree = new Tree(skin);
TreeNode node1 = new TreeNode(new TextButton("moo1", skin));
TreeNode node2 = new TreeNode(new TextButton("moo2", skin));
TreeNode node3 = new TreeNode(new TextButton("moo3", skin));
TreeNode node4 = new TreeNode(new TextButton("moo4", skin));
TreeNode node5 = new TreeNode(new TextButton("moo5", skin));
tree.Add(node1);
tree.Add(node2);
node2.Add(node3);
node3.Add(node4);
tree.Add(node5);
Label label = new Label("", skin, "default");
tree.SelectionChanged += (sender, e) => {
if (e.AddedItems.Count == 0)
return;
StringBuilder txt = new StringBuilder();
foreach (TreeNode node in e.AddedItems) {
TextButton button = node.Actor as TextButton;
txt.Append(button.Text + ", ");
}
label.Text = txt.ToString();
label.Invalidate();
};
(node5.Actor as Button).Clicked += (sender, e) => {
tree.Remove(node4);
};
//node5.Actor.AddListener(new DispatchClickListener() {
// OnClicked = (ev, x, y) => { tree.Remove(node4); }
//});
table.Add(tree).Configure.Fill().Expand();
table.Row();
table.Add(label).Configure.Fill().Expand();
//Debugger.Launch();
}
public void Remove(TreeNode node)
{
_children.Remove(node);
if (!_expanded)
return;
Tree tree = Tree;
if (tree == null)
return;
node.RemoveFromTree(tree);
if (_children.Count == 0)
_expanded = false;
}
public void Add(TreeNode node)
{
Insert(_children.Count, node);
}
public void Insert(int index, TreeNode node)
{
node._parent = this;
_children.Insert(index, node);
UpdateChildren();
}
public void SetSelection(TreeNode node)
{
_selectionChanger.Begin(_selectedNodes);
if (node != null)
_selectionChanger.SelectOnly(node);
else
_selectionChanger.UnselectAll();
_selectionChanger.End();
}
private float NodeAt(List<TreeNode> nodes, float y, float rowY)
{
foreach (TreeNode node in nodes) {
if (y >= rowY - node.Height - YSpacing && y < rowY) {
_foundNode = node;
return -1;
}
rowY -= node.Height + YSpacing;
if (node.IsExpanded) {
rowY = NodeAt(node.Children, y, rowY);
if (rowY == -1)
return -1;
}
}
return rowY;
}
public void Remove(TreeNode node)
{
if (node.Parent != null) {
node.Parent.Remove(node);
return;
}
_rootNodes.Remove(node);
node.RemoveFromTree(this);
InvalidateHierarchy();
}
public TreeNode NodeAt(float y)
{
_foundNode = null;
NodeAt(_rootNodes, y, Height);
return _foundNode;
}
public void Insert(int index, TreeNode node)
{
Remove(node);
node.Parent = null;
_rootNodes.Insert(index, node);
node.AddToTree(this);
InvalidateHierarchy();
}
public void AddSelection(TreeNode node)
{
if (node == null)
return;
_selectionChanger.Begin(_selectedNodes);
_selectionChanger.Select(node);
_selectionChanger.End();
}
public void Add(TreeNode node)
{
Insert(_rootNodes.Count, node);
}
