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老生常谈combobox和combotree模糊查询

2018年05月21日  | 移动技术网IT编程  | 我要评论

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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