javascript入门之 zTree（十三移动/复制事件）

<!DOCTYPE html>
<HTML>
<HEAD>
   <TITLE> ZTREE DEMO - copyNode / moveNode</TITLE>
   <meta http-equiv="content-type" content="text/html; charset=UTF-8">
   <script type="text/javascript" src="../js/jquery-3.3.1.js"></script>
   <link rel="stylesheet" href="../bower_components/ztree/css/zTreeStyle/demo.css" type="text/css">
   <link rel="stylesheet" href="../bower_components/ztree/css/zTreeStyle/zTreeStyle.css" type="text/css">
   <script type="text/javascript" src="../bower_components/ztree/js/jquery-1.4.4.min.js"></script>
   <script type="text/javascript" src="../bower_components/ztree/js/jquery.ztree.core-3.5.js"></script>
   <script type="text/javascript" src="../bower_components/ztree/js/jquery.ztree.excheck-3.5.js"></script>
   <script type="text/javascript" src="../bower_components/ztree/js/jquery.ztree.exedit-3.5.js"></script>
   <SCRIPT type="text/javascript">
      <!--
      var setting = {
         view: {
            selectedMulti: false
         },
         edit: {
            enable: true,
            showRemoveBtn: false,
            showRenameBtn: false
         },
         data: {
            simpleData: {
               enable: true
            }
         },
         callback: {
            beforeClick: beforeClick
         }
      };

      var zNodes =[
         { id:1, pId:0, name:"父节点 1", open:true},
         { id:11, pId:1, name:"叶子节点 1-1"},
         { id:12, pId:1, name:"叶子节点 1-2"},
         { id:13, pId:1, name:"叶子节点 1-3"},
         { id:2, pId:0, name:"父节点 2", open:true},
         { id:21, pId:2, name:"叶子节点 2-1"},
         { id:22, pId:2, name:"叶子节点 2-2"},
         { id:23, pId:2, name:"叶子节点 2-3"},
         { id:3, pId:0, name:"父节点 3", open:true },
         { id:31, pId:3, name:"叶子节点 3-1"},
         { id:32, pId:3, name:"叶子节点 3-2"},
         { id:33, pId:3, name:"叶子节点 3-3"}
      ];

      function fontCss(treeNode) {

         var aObj = $("#" + treeNode.tId + "_a");
         aObj.removeClass("copy").removeClass("cut");
         if (treeNode === curSrcNode) {
            if (curType == "copy") {
               aObj.addClass(curType);
            } else {
               aObj.addClass(curType);
            }        
         }
      }

      function beforeClick(treeId, treeNode) {
          alert('你选择前点击了' + treeNode.name);
         return !treeNode.isCur;                                  //点剪切/复制以前,点击此结点isCur还未定义，所以强制返回true，点剪贴/复制以后返回false
      }

      var curSrcNode, curType;
      function setCurSrcNode(treeNode) {
         var zTree = $.fn.zTree.getZTreeObj("sys");
         if (curSrcNode) {                                   //当第一次处理（）选中的结点时，curSrcNode还未定义，返回false，第二次处理（）时，返回true
            delete curSrcNode.isCur;
            var tmpNode = curSrcNode;
            curSrcNode = null;                               //粘贴完第一个后，为了重复利用，需要清空curSrcNode,方便再次选择
            fontCss(tmpNode);
         }
         curSrcNode = treeNode;
         if (!treeNode) return;                               //如果不存在，退出该函数

         curSrcNode.isCur = true;
         zTree.cancelSelectedNode();                               //处理好后，取消选中的点
         fontCss(curSrcNode);
      }
      function copy(e) {
         var zTree = $.fn.zTree.getZTreeObj("sys"),
         nodes = zTree.getSelectedNodes();
         if (nodes.length == 0) {
            alert("请先选择一个节点");
            return;
         }
         curType = "copy";
         alert('你选择了' + nodes[0].name);
         setCurSrcNode(nodes[0]);
      }
      function cut(e) {
         var zTree = $.fn.zTree.getZTreeObj("sys"),
         nodes = zTree.getSelectedNodes();
         if (nodes.length == 0) {
            alert("请先选择一个节点");
            return;
         }
         curType = "cut";
         setCurSrcNode(nodes[0]);
      }
      function paste(e) {                                        //点击paste按扭时，判断curSrcNode是否定义
         if (!curSrcNode) {

            alert("请先选择一个节点进行 复制 / 剪切");
            return;
         }

         var zTree = $.fn.zTree.getZTreeObj("sys"),
         nodes = zTree.getSelectedNodes(),
         targetNode = nodes.length>0? nodes[0]:null;                   //如果选中多个，则只对第一个进行处理，如果为空，则定义为null

         alert(curSrcNode.parentTId);

         if (curSrcNode === targetNode) {                        //同输出

            alert("不能移动，源节点 与 目标节点相同");
            return;

         } else if (curType === "cut" && ((!!targetNode && curSrcNode.parentTId === targetNode.tId) || (!targetNode && !curSrcNode.parentTId))) {
            //当为cut的时候，一：1.目标结点存在 2.目标结点是选中的结点的父结点
            //               二： 1.目标结点 和 选中的结点的父结点 都是root（我也不知道昨说，这么说，你应该知道）

            alert("不能移动，源节点 已经存在于 目标节点中");
            return;

         } else if (curType === "copy") {

            targetNode = zTree.copyNode(targetNode, curSrcNode, "inner");                 //复制函数

         } else if (curType === "cut") {

            targetNode = zTree.moveNode(targetNode, curSrcNode, "inner");                 //剪贴函数

            if (!targetNode) {

               alert("剪切失败，源节点是目标节点的父节点");
            }
            targetNode = curSrcNode;
         }
         setCurSrcNode();
         delete targetNode.isCur;
         zTree.selectNode(targetNode);
      }
      
      $(document).ready(function(){
         $.fn.zTree.init($("#sys"), setting, zNodes);
         $("#copy").bind("click", copy);
         $("#cut").bind("click", cut);
         $("#paste").bind("click", paste);
      });
      //-->
   </SCRIPT>

</HEAD>

<BODY>
<div class="content_wrap">
   <div class="zTreeDemoBackground left">
      <ul id="sys" class="ztree"></ul>
   </div>
   <div class="right">
      [ <a id="copy" href="#" title="复制" onclick="return false;">复制</a>
      [ <a id="cut" href="#" title="剪切" onclick="return false;">剪切</a> ]
      [ <a id="paste" href="#" title="粘贴" onclick="return false;">粘贴</a> ]
   </div>
</div>
</BODY>
</HTML>
javascript入门 之 zTree（十三 移动/复制事件）

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