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bootstrap treeview extends addNode method to dynamically add child nodes

小云云
Release: 2018-05-23 17:13:32
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本文主要介绍了bootstrap treeview 扩展addNode方法动态添加子节点的方法,需要的朋友可以参考下,bootstrap-treeview是一款效果非常酷的基于bootstrap的jQuery多级列表树插件。该jQuery插件基于Twitter Bootstrap,以简单和优雅的方式来显示一些继承树结构,如视图树、列表树等等。

本文只是详细说明对bootstrap-treeview添加子节点的扩展方法(addNode),如了解bootstrap-treeview所有用法请看官方API

官方api  https://www.npmjs.com/package/bootstrap-treeview   (点击新窗口打开)

 使用过程中,需要动态添加子节点。发现api中没有此功能。找了很多资料也没有发现有相关的方法。

又不想放弃使用它,看来只能自己写的。先读他们的源代码,看他们的逻辑关系,然后就下手自己写一下。不多说,直接上代码

第一步:在Tree主函数return {/*在这里添加addNode的入口*/} 

看图比较直观

附上代码:

addNode: $.proxy(this.addNode, this),
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第二步:添加Tree的prototype方法

 /** 
    给节点添加子节点 
@param {Object|Number} identifiers - A valid node, node id or array of node identifiers 
@param {optional Object} options.node; 
  */ 
Tree.prototype.addNode = function (identifiers, options) { 
  this.forEachIdentifier(identifiers, options, $.proxy(function (node, options) { 
    this.setAddNode(node, options);  
  }, this)); 
  this.setInitialStates({ nodes: this.tree }, 0); 
  this.render(); 
} 
  /** 
  * 添加子节点 
  */ 
Tree.prototype.setAddNode = function (node, options) { 
  if (node.nodes == null) node.nodes = []; 
  if (options.node) { 
    node.nodes.push(options.node); 
  }; 
};
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看图:

第三步:就是如何使用了。


$("#Treeview01").treeview("addNode", [2, { node: { text: "新加的菜单", href: "001005" } }]);
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注意 $("#Treeview01")使用data已初始化过的

下面看个实例TreeView动态添加节点

遍历某路径下的文件夹添加父节点,遍历文件夹下的文件添加子节点

 private void button1_Click(object sender, EventArgs e)
    {
      FolderBrowserDialog fd = new FolderBrowserDialog();
      if (fd.ShowDialog() == DialogResult.OK)
      {
        // 在此添加代码,选择的路径为 folderBrowserDialog1.SelectedPath
        if (Directory.Exists(fd.SelectedPath))
        {
          DirectoryInfo thisOne = new DirectoryInfo(fd.SelectedPath);
          DirectoryInfo[] directoryInfo = thisOne.GetDirectories();
          for (int i = 0; i < directoryInfo.Length; i++)
          {
            TreeNode root = new TreeNode(directoryInfo[i].ToString());//创建节点
            root.Name = directoryInfo[i].ToString(); //为节点取个名字,这儿创建的是根节点
            root.Tag = 0;
            treeView1.Nodes.Add(root);        //将节点添加到treeView1上
            DirectoryInfo thisTwo = new DirectoryInfo(fd.SelectedPath + "\\" + directoryInfo[i].ToString());
            FileInfo[] fileInfo = thisTwo.GetFiles();
            for (int j = 0; j < fileInfo.Length; j++)
            {
              TreeNode node = new TreeNode(fileInfo[j].ToString());
              node.Tag = 1;
              node.Name = fileInfo[j].ToString();
              if (!root.Nodes.ContainsKey(node.Name))
              {
                root.Nodes.Add(node);
              }
            }
          }
        }
      }
    }
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