easyUI combobox combotree 模糊查询,带上下键选择功能，待完善。。。。-白红宇

easyUI combobox combotree 模糊查询,带上下键选择功能，待完善。。。。

阅读量：6463 次

发布时间：2019-06-23

本文共 9819 字，大约阅读时间需要 32 分钟。

/2017年4月9日 11:52:36/**  * combobox和combotree模糊查询 * combotree 结果带两级父节点(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
     
      = 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

引用的别人的原代码：

(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);

转载于:https://www.cnblogs.com/gcjava/p/6767568.html

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