/// <summary>
/// 根据每个treeNode获取数据信息，并创建UI对象。
/// Method CreateTreeNode is called for every TreeNode is TreeNodes data source to create the Node UI GameObject.
/// The created GameObject will be added to the tree as Branch or Leaf.
/// </summary>
/// <param name="treeNode">The index and information for this node</param>
/// <returns></returns>
protected virtual GameObject CreateTreeNode(TreeNode treeNode)
{
return new GameObject();
}
protected void CreateTree(GameObject parentObject, TreeNode treeNode)
{
do
{
var nodeObject = CreateTreeNode(treeNode);
if (!nodeObject)
{
break;
}
treeHeight += GetNodeHeight(nodeObject);
UpdateContentPanelSize();
// Add node object to tree.
nodeObject.transform.SetParent(parentObject.transform, false);
nodeObject.transform.SetAsLastSibling();
nodeObject.transform.localScale = Vector3.one;
theLastObject = nodeObject;
// For branch node.
if (treeNode.Type != TreeNode.NodeType.Branch)
{
break;
}
var nodes = (treeNode as TreeBranch).Children;
if (nodes == null || nodes.Count == 0)
{
break;
}
float oldHeight = treeHeight;
float addedHeight = 0;
// Set Padding here if you want.
GameObject grid = new GameObject();
grid.name = "Grid" + treeNode.Index;
grid.AddComponent<RectTransform>();
var verticalLayoutGroup = grid.AddComponent<VerticalLayoutGroup>();
verticalLayoutGroup.childForceExpandWidth = false;
verticalLayoutGroup.childForceExpandHeight = false;
grid.transform.SetParent(parentObject.transform, false);
grid.transform.SetAsLastSibling();
foreach (var node in nodes)
{
CreateTree(grid, node);
}
var button = nodeObject.GetComponent<Button>();
if (!button)
{
Debug.LogError("Tree Branch should have a Button component.");
break;
}
addedHeight = treeHeight - oldHeight;
button.onClick.AddListener(() =>
{
bool shown = true;
bool hidden = true;
for (int i = 0; i < grid.transform.childCount; ++i)
{
GameObject node = grid.transform.GetChild(i).gameObject;
if (node.activeSelf)
{
hidden = false;
}
else
{
shown = false;
}
}
if (!shown && !hidden)
{
return;
}
if (shown)
{
for (int i = 0; i < grid.transform.childCount; ++i)
{
// Instantiate Avatar
GameObject node = grid.transform.GetChild(i).gameObject;
LeanTween.delayedCall(node, (i + 1) * duration, () =>
{
node.SetActive(false);
});
}
LeanTween.delayedCall(grid, grid.transform.childCount * duration, () =>
{
treeHeight -= addedHeight;
UpdateContentPanelSize();
});
}
if (hidden)
{
for (int i = grid.transform.childCount - 1; i >= 0; --i)
{
// Instantiate Avatar
GameObject node = grid.transform.GetChild(i).gameObject;
LeanTween.delayedCall(node, (i + 1) * duration, () =>
{
node.SetActive(true);
});
}
treeHeight += addedHeight;
UpdateContentPanelSize();
}
});
} while (false);
}