老生常谈combobox和combotree模糊查询

First

/**
 * combobox和combotree模糊查询
 * combotree 结果显示两级父节点(手动设置数量)
 * 键盘上下键选择叶子节点
 * 键盘回车键设置文本的值
 */
(function(){
 //combobox可编辑，自定义模糊查询
 $.fn.combobox.defaults.editable = true;
 $.fn.combobox.defaults.filter = function(q, row){
 var opts = $(this).combobox('options');
 return row[opts.textField].indexOf(q) >= 0;
 };
 //combotree可编辑，自定义模糊查询
 $.fn.combotree.defaults.editable = true;
 //选中行索引
 var leafBlockIndex=0;
 //当前选中行索引
 var nowLeafBlockIndex=-1;
 //combotree 组件
 var comboTree=null;
 //叶子节点DOM Array
 var leafBlocks=null;;
 //将所有的结果叶子节点放入 DOM Array中
 function getDOMArray(data){
 comboTree = $(data).combotree('tree');
 leafBlocks=new Array();
 var leafs = comboTree.tree('getChildren');
 for (var i = 0; i < leafs.length; i++) {
  var leaf = leafs[i];
  var dis =$(leaf.target).css('display')+'';
  if('block' == dis){
  if(comboTree.tree('isLeaf',leaf.target)){
   leafBlocks.push(leaf.target);
  }
  }
 };
 };
 //-------------------------------------
 $.extend($.fn.combotree.defaults.keyHandler,{
 up:function(e){
  leafBlockIndex=nowLeafBlockIndex;
  leafBlockIndex--;
  getDOMArray(this);
  if(leafBlockIndex <0){
  leafBlockIndex=leafBlocks.length-1;
  }
  comboTree.tree('select',leafBlocks[leafBlockIndex]);
//  easyui 1.3.4版开始可用
//  comboTree.tree('scrollTo',leafBlocks[leafBlockIndex]);
  nowLeafBlockIndex=leafBlockIndex;
 },
 down:function(e){
  leafBlockIndex=nowLeafBlockIndex;
  leafBlockIndex++;
  getDOMArray(this);
  if(leafBlockIndex >= leafBlocks.length){
  leafBlockIndex=0;
  }
  comboTree.tree('select',leafBlocks[leafBlockIndex]);
//  easyui 1.3.4版开始可用
//  comboTree.tree('scrollTo',leafBlocks[leafBlockIndex]);
  nowLeafBlockIndex=leafBlockIndex;
 },
 left: function(e){
  console.log('left');
//  var val = $(this).combo('getText');
//  $(this).combo('setText',val+' ');
 },
 right: function(e){
  console.log('right');
//  var val = $(this).combo('getText');
//  console.log(val);
//  $(this).combo('setText',val+' ');
 },
 enter:function(e){
  var leaf =$(leafBlocks[nowLeafBlockIndex]);
  var value =leaf.children('span').last().text();
  $(this).combo('setText',value);
  $(this).combo('hidePanel')
 },
 query:function(q){
  var t = $(this).combotree('tree');
  var nodes = t.tree('getChildren');
  for(var i=0; i<nodes.length; i++){
  var node = nodes[i];
  if (node.text.indexOf(q) >= 0){
   $(node.target).show();
   var parent=t.tree('getParent',node.target);
   if(parent){
   $(parent.target).show();
   if(parent){
    parent=t.tree('getParent',parent.target);
    $(parent.target).show();
   }
   }
  } else {
   $(node.target).hide();
  }
  }
  var opts = $(this).combotree('options');
  if (!opts.hasSetEvents){
  opts.hasSetEvents = true;
  var onShowPanel = opts.onShowPanel;
  opts.onShowPanel = function(){
   var nodes = t.tree('getChildren');
   for(var i=0; i<nodes.length; i++){
   $(nodes[i].target).show();
   }
   onShowPanel.call(this);
  };
  $(this).combo('options').onShowPanel = opts.onShowPanel;
  }
 }
 });
})(jQuery);

Second

(function ($) {
 //combotree可编辑，自定义模糊查询
 $.fn.combotree.defaults.editable = true;
 $.extend($.fn.combotree.defaults.keyHandler, {
 query: function (q) {
  var t = $(this).combotree('tree');
  t.tree("search", q);
 }
 });
 $.extend($.fn.tree.methods, {  /**
  * 扩展easyui tree的搜索方法
  * @param tree easyui tree的根DOM节点(UL节点)的jQuery对象  * @param searchText 检索的文本
  * @param this-context easyui tree的tree对象  */
 search: function (jqTree, searchText) {
  //easyui tree的tree对象。可以通过tree.methodName(jqTree)方式调用easyui tree的方法
  var tree = this;
  //获取所有的树节点
  var nodeList = getAllNodes(jqTree, tree);
  //如果没有搜索条件，则展示所有树节点
  searchText = $.trim(searchText);
  if (searchText == "") {
  for (var i = 0; i < nodeList.length; i++) {
   $(".tree-node-targeted",
  nodeList[i].target).removeClass("tree-node-targeted");
   $(nodeList[i].target).show();
  }
  //展开已选择的节点（如果之前选择了）
  var selectedNode = tree.getSelected(jqTree);
  if (selectedNode) {
   tree.expandTo(jqTree, selectedNode.target);
  }
  return;
  }
  //搜索匹配的节点并高亮显示
  var matchedNodeList = [];
  if (nodeList && nodeList.length > 0) {
  var node = null;
  for (var i = 0; i < nodeList.length; i++) {
   node = nodeList[i];
   if (isMatch(searchText, node.text)) {
   matchedNodeList.push(node);
   }
  }
  //隐藏所有节点
  for (var i = 0; i < nodeList.length; i++) {
   $(".tree-node-targeted", nodeList[i].target).removeClass("tree-node-targeted");
   $(nodeList[i].target).hide();
  }
  //折叠所有节点
  tree.collapseAll(jqTree);
  //展示所有匹配的节点以及父节点 

  for (var i = 0; i < matchedNodeList.length; i++) {
   showMatchedNode(jqTree, tree, matchedNodeList[i]);
  }
  }
 },
 /**
 * 展示节点的子节点（子节点有可能在搜索的过程中被隐藏了）
 * @param node easyui tree节点
 */
 showChildren: function (jqTree, node) {
  //easyui tree的tree对象。可以通过tree.methodName(jqTree)方式调用easyui tree的方法
  var tree = this;
  //展示子节点
  if (!tree.isLeaf(jqTree, node.target)) {
  var children = tree.getChildren(jqTree, node.target);
  if (children && children.length > 0) {
   for (var i = 0; i < children.length; i++) {
   if ($(children[i].target).is(":hidden")) {
    $(children[i].target).show();
   }
   }
  }
  }
 },
 /**
 * 将滚动条滚动到指定的节点位置，使该节点可见（如果有滚动条才滚动，没有滚动条就不滚动）
 * @param param {
 * treeContainer: easyui tree的容器（即存在滚动条的树容器）。如果为null，则取easyui tree的根UL节点的父节点。
 * argetNode: 将要滚动到的easyui tree节点。如果targetNode为空，则默认滚动到当前已选中的节点，如果没有选中的节点，则不滚动  * }  */
 scrollTo: function (jqTree, param) {
  //easyui tree的tree对象。可以通过tree.methodName(jqTree)方式调用easyui tree的方法
  var tree = this;
  //如果node为空，则获取当前选中的node
  var targetNode = param && param.targetNode ? param.targetNode : tree.getSelected(jqTree);
  if (targetNode != null) {
  //判断节点是否在可视区域   var root = tree.getRoot(jqTree);
  var $targetNode = $(targetNode.target);
  var Container = param && param.treeContainer ? param.treeContainer : jqTree.parent();
  var containerH = container.height();
  var nodeOffsetHeight = $targetNode.offset().top - container.offset().top;
  if (nodeOffsetHeight > (containerH - 30)) {
   var scrollHeight = container.scrollTop() + nodeOffsetHeight - containerH + 30;
   container.scrollTop(scrollHeight);
  }
  }
 }
 });
 /**
  * 展示搜索匹配的节点 */
 function showMatchedNode(jqTree, tree, node) {
 //展示所有父节点
 $(node.target).show();
 $(".tree-title", node.target).addClass("tree-node-targeted");
 var pNode = node;
 while ((pNode = tree.getParent(jqTree, pNode.target))) {
  $(pNode.target).show();
 }
 //展开到该节点
 tree.expandTo(jqTree, node.target);
 //如果是非叶子节点，需折叠该节点的所有子节点
 if (!tree.isLeaf(jqTree, node.target)) {
  tree.collapse(jqTree, node.target);
 }
 }
 /**
 * 判断searchText是否与targetText匹配
 * @param searchText 检索的文本 * @param targetText 目标文本
 * @return true-检索的文本与目标文本匹配；否则为false.
 */
 function isMatch(searchText, targetText) {
 return $.trim(targetText) != "" && targetText.indexOf(searchText) != -1;
 }
 /**
 * 获取easyui tree的所有node节点 */
 function getAllNodes(jqTree, tree) {
 var allNodeList = jqTree.data("allNodeList");
 if (!allNodeList) {
  var roots = tree.getRoots(jqTree);
  allNodeList = getChildNodeList(jqTree, tree, roots);
  jqTree.data("allNodeList", allNodeList);
 }
 return allNodeList;
 }
 /**
 * 定义获取easyui tree的子节点的递归算法 */
 function getChildNodeList(jqTree, tree, nodes) {
 var childNodeList = [];
 if (nodes && nodes.length > 0) {
  var node = null;
  for (var i = 0; i < nodes.length; i++) {
  node = nodes[i];
  childNodeList.push(node);
  if (!tree.isLeaf(jqTree, node.target)) {
   var children = tree.getChildren(jqTree, node.target);
   childNodeList = childNodeList.concat(getChildNodeList(jqTree, tree, children));
  }
  }
 }
 return childNodeList;
 }
})(jQuery);

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