Unity基于DFGUI的TreeView设计

using UnityEngine;
using System.Collections;

public class Item 
{

    public string Id;

    public string Name;

    public string ParentId;

    public Item(string name, string id, string parentid)
    {
        this.Name = name;
        this.Id = id;
        this.ParentId = parentid;
    }

}

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class NodeMessage : MonoBehaviour
{

    public string Tag;

    public List<NodeMessage> NodeList;


}

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Xml;

public class TreeNode : MonoBehaviour
{
    public GameObject Panel;
    public List<Item> ItemList;
    dfScrollPanel scrollpanel;

    void Start()
    {
        scrollpanel = this.GetComponent<dfScrollPanel>();
        ReadXML();
        AddNodes();
    }

    void AddNodes()
    {
        for (int i = 0; i < ItemList.Count; i++)
        {
            if (ItemList[i].ParentId == "0")
            {
                var treeNode = scrollpanel.AddPrefab(Panel);
                var newNode = treeNode.GetComponent<NodeMessage>();
                newNode.Tag = ItemList[i].Id;
                treeNode.Find("Sprite").GetComponent<dfSprite>().SpriteName = "ArrowNormal";
                treeNode.Find("Node").GetComponent<dfButton>().Text = ItemList[i].Name;
                AddChildNodes(newNode);
            }
        }
        foreach (Transform child in scrollpanel.transform)
        {
            var TreeNode = child.GetComponent<NodeMessage>();
            if (TreeNode.NodeList.Count == 0)
            {
                dfPanel NodePanel = child.GetComponent<dfPanel>();
                NodePanel.Find("Sprite").GetComponent<dfSprite>().IsVisible = false;
            }
        }
    }

    public void AddChildNodes(NodeMessage message)
    {
        for (int i = 0; i < ItemList.Count; i++)
        {
            if (ItemList[i].ParentId == message.Tag)
            {
                var treeNode = scrollpanel.AddPrefab(Panel);
                var newNode = treeNode.GetComponent<NodeMessage>();
                newNode.Tag = ItemList[i].Id;
                treeNode.Find("Node").GetComponent<dfButton>().Text = ItemList[i].Name;
                treeNode.Find("Sprite").GetComponent<dfSprite>().SpriteName = "ArrowNormal";
                var parentTransform = message.GetComponent<dfPanel>().Find("Panel").transform;
                treeNode.Find("Panel").transform.localPosition = new Vector2(parentTransform.localPosition.x + 0.1f, 0);
                message.NodeList.Add(newNode);
                AddChildNodes(newNode);
                treeNode.IsVisible = false;
            }
        }
    }

    public void tubiaoOnClick(bool isShow, string tag, List<NodeMessage> nodelist)
    {
        for (int i = 0; i < ItemList.Count; i++)
        {
            if (ItemList[i].Id == tag)
            {
                SelectNodeList(isShow, nodelist);
            }
        }
    }

    void SelectNodeList(bool isShow, List<NodeMessage> nodelist)
    {
        for (int j = 0; j < nodelist.Count; j++)
        {
            dfPanel NodePanel = nodelist[j].GetComponent<dfPanel>();
            var node = NodePanel.GetComponent<NodeMessage>();
            if (isShow == true)
            {
                NodePanel.IsVisible = true;
            }
            else
            {
                tubiaoOnClick(isShow, node.Tag, node.NodeList);
                NodePanel.IsVisible = false;
                NodePanel.Find("Sprite").GetComponent<dfSprite>().SpriteName = "ArrowNormal";
                NodePanel.Find("tubiao").GetComponent<TuBiao>().isShow = false;
                
            }
        }
    }

    void ReadXML()
    {
        XmlDocument doc = new XmlDocument();
        doc.Load(Application.dataPath + @"TreeView.xml");
        XmlElement rootElem = doc.DocumentElement;
        XmlNodeList itemlist = rootElem.GetElementsByTagName("node");

        ItemList = new List<Item>();
        foreach (XmlNode xn1 in itemlist)
        {
            XmlElement xe = (XmlElement)xn1;
            XmlNodeList xml = xe.ChildNodes;
            Item item = new Item(xe.GetAttribute("name").ToString(), xml.Item(0).InnerText, xml.Item(1).InnerText);
            ItemList.Add(item);
        }

    }

}

using UnityEngine;
using System.Collections;

public class TuBiao : MonoBehaviour
{

    private TreeNode TreeNode;
    dfSprite Sprite;
    NodeMessage Message;
    public bool isShow = false;

    void Start()
    {
        Sprite = this.transform.FindChild("Sprite").GetComponent<dfSprite>();
        TreeNode = this.transform.parent.parent.parent.GetComponent<TreeNode>();
        Message = this.transform.parent.parent.GetComponent<NodeMessage>();
    }

    void OnClick()
    {
        if (Sprite.SpriteName == "ArrowNormal")
            Sprite.SpriteName = "ArrowUnfold";
        else
            Sprite.SpriteName = "ArrowNormal";
        isShow = !isShow;
        TreeNode.tubiaoOnClick(isShow, Message.Tag, Message.NodeList);

    }

}

XML如下：

<?xml version="1.0" encoding="utf-8"?>
<projects>
  <node name="Node1">
    <id>1</id>
    <parentid>0</parentid>
  </node>
  <node name="Node1 - 1">
    <id>2</id>
    <parentid>1</parentid>
  </node>
  <node name="Node1 - 1 - 1">
    <id>3</id>
    <parentid>2</parentid>
  </node>
  <node name="Node1 - 1 - 2">
    <id>4</id>
    <parentid>2</parentid>
  </node>
  <node name="Node1 - 2">
    <id>5</id>
    <parentid>1</parentid>
  </node>
  <node name="Node1 - 2 - 1">
    <id>6</id>
    <parentid>5</parentid>
  </node>
  <node name="Node1 - 2 - 2">
    <id>7</id>
    <parentid>5</parentid>
  </node>
  <node name="Node2">
    <id>8</id>
    <parentid>0</parentid>
  </node>
  <node name="Node2 - 1">
    <id>9</id>
    <parentid>8</parentid>
  </node>
  <node name="Node2 - 2">
    <id>10</id>
    <parentid>8</parentid>
  </node>
  <node name="Node2 - 2 - 1">
    <id>11</id>
    <parentid>10</parentid>
  </node>
  <node name="Node2 - 2 - 2">
    <id>12</id>
    <parentid>10</parentid>
  </node>
  <node name="Node2 - 3">
    <id>13</id>
    <parentid>8</parentid>
  </node>
  <node name="Node3">
    <id>14</id>
    <parentid>0</parentid>
  </node>
  <node name="Node3 - 1">
    <id>15</id>
    <parentid>14</parentid>
  </node>
  <node name="Node3 - 1 - 1">
    <id>16</id>
    <parentid>15</parentid>
  </node>
  <node name="Node3 - 1 - 2">
    <id>17</id>
    <parentid>15</parentid>
  </node>
  <node name="Node3 - 2">
    <id>18</id>
    <parentid>14</parentid>
  </node>
  <node name="Node3 - 2 - 1">
    <id>19</id>
    <parentid>18</parentid>
  </node>
  <node name="Node3 - 2 - 2">
    <id>20</id>
    <parentid>18</parentid>
  </node>
</projects>