/// <summary>
/// Display node.
/// </summary>
/// <param name="node">Node.</param>
/// <param name="connector">Connector.</param>
/// <param name="position">Position.</param>
/// <returns>Node size.</returns>
protected virtual Vector2 DisplayNode(TreeNode <TItem> node, MultipleConnector connector, Vector2 position)
{
var component = GetComponentInstance();
var size = GetNodeSize(node);
(component.transform as RectTransform).anchoredPosition = IsHorizontal()
? new Vector2(position.x, -position.y - (size.y / 2f))
: new Vector2(position.x + (size.x / 2f), -position.y);
component.SetData(node);
if (connector != null)
{
var start = ConnectorPosition.Center;
var end = ConnectorPosition.Center;
switch (Direction)
{
case TreeGraphDirections.TopToBottom:
start = ConnectorPosition.Bottom;
end = ConnectorPosition.Top;
break;
case TreeGraphDirections.BottomToTop:
start = ConnectorPosition.Top;
end = ConnectorPosition.Bottom;
break;
case TreeGraphDirections.LeftToRight:
start = ConnectorPosition.Right;
end = ConnectorPosition.Left;
break;
case TreeGraphDirections.RightToLeft:
start = ConnectorPosition.Left;
end = ConnectorPosition.Right;
break;
default:
#if NETFX_CORE
throw new ArgumentException("Unsupported direction: " + Direction);
#else
throw new InvalidEnumArgumentException("Unsupported direction: " + Direction);
#endif
}
var line = new ConnectorLine()
{
Target = component.transform as RectTransform,
Start = start,
End = end,
Thickness = 1f,
Type = ConnectorType.Straight,
};
connector.Lines.Add(line);
}
if (node.IsExpanded)
{
var new_position = GetNextLevelPosition(position);
DisplayNodes(node.Nodes, component.GetComponent <MultipleConnector>(), new_position);
}
return(size);
}
/// <summary>
/// Display nodes.
/// </summary>
/// <param name="nodesToDisplay">Nodes to display.</param>
/// <param name="connector">Connector.</param>
/// <param name="position">Start position.</param>
protected virtual void DisplayNodes(ObservableList <TreeNode <TItem> > nodesToDisplay, MultipleConnector connector, Vector2 position)
{
if (nodesToDisplay == null)
{
return;
}
var size = Vector2.zero;
foreach (var node in nodesToDisplay)
{
if (!node.IsVisible)
{
continue;
}
size = DisplayNode(node, connector, position);
position = GetNextPosition(position, size);
}
}