easyui tree 檢索樹節點（3）
阿新 • • 發佈：2018-12-05
1.檢索樹節點的呼叫方法
function searchTreeFunc(){
$("#tree").tree("searchTree",$("#searchContentId").val());
}
html部分
<input class="easyui-textbox" id="searchContentId" data-options="onClickButton:function(){searchTreeFunc('tree','searchrepairtTreeId')},buttonText:'查詢',buttonIcon:'icon- search',prompt:'節點名稱...'" style="width:180px;height:24px;margin-top:10px;margin-left:10px;">
2.原始碼
3.引入的serchTree.js<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Search Tree - jQuery EasyUI Demo</title> <link rel="stylesheet" type="text/css" href="../../themes/default/easyui.css"> <link rel="stylesheet" type="text/css" href="../../themes/icon.css"> <link rel="stylesheet" type="text/css" href="../demo.css"> <script type="text/javascript" src="../../jquery.min.js"></script> <script type="text/javascript" src="../../jquery.easyui.min.js"></script> <script type="text/javascript" src="../../treesearch.js"></script> <script> //檢索樹節點呼叫方法 function searchTreeFunc(){ $("#tree").tree("searchTree",$("#searchContentId").val()); } $(function(){ $("#tree").tree({ url:'tree_data1.json', checkbox:false, expand:true, onLoadSuccess:function(node,data){ var rootNode = $("#tree").tree('getRoot'); var children = $("#tree").tree('getChildren',rootNode.target); // 選中第一個子節點 $("#tree").tree("select",children[0].target); } }); //回撤鍵觸發檢索 document.onkeydown = function(e) { var theEvent = window.event || e; var code = theEvent.keyCode || theEvent.which; if (code == 13) { searchTreeFunc(); } }; }); </script> </head> <body> <div><input class="easyui-textbox" id="searchContentId" data-options="onClickButton:function(){searchTreeFunc('tree','searchrepairtTreeId')},buttonText:'查詢',buttonIcon:'icon-search',prompt:'節點名稱...'" style="width:180px;height:24px;margin-top:10px;margin-left:10px;"></div> <div id="tree" style="width:300px;height:400px;"></div>' </body> </html>
/** * 1）擴充套件jquery easyui tree的節點檢索方法。使用方法如下： * $("#treeId").tree("search", searchText); * 其中，treeId為easyui tree的根UL元素的ID，searchText為檢索的文字。 * 如果searchText為空或""，將恢復展示所有節點為正常狀態 */ (function($) { $.extend($.fn.tree.methods, { /** * 擴充套件easyui tree的搜尋方法 * @param tree easyui tree的根DOM節點(UL節點)的jQuery物件 * @param searchText 檢索的文字 * @param this-context easyui tree的tree物件 */ searchTree: function(jqTree, searchText) { //easyui tree的tree物件。可以通過tree.methodName(jqTree)方式呼叫easyui tree的方法 var tree = this; //獲取所有的樹節點 var nodeList = getAllNodes(jqTree, tree); //如果沒有搜尋條件，則展示所有樹節點 searchText = $.trim(searchText); if (searchText == "") { for (var i=0; i<nodeList.length; i++) { $(".tree-node-targeted", nodeList[i].target).removeClass("tree-node-targeted"); $(nodeList[i].target).show(); } //展開已選擇的節點（如果之前選擇了） var selectedNode = tree.getSelected(jqTree); if (selectedNode) { tree.expandTo(jqTree, selectedNode.target); } return; } //搜尋匹配的節點並高亮顯示 var matchedNodeList = []; if (nodeList && nodeList.length>0) { var node = null; for (var i=0; i<nodeList.length; i++) { node = nodeList[i]; if((node.text).indexOf(searchText)>-1){ jqTree.tree("select",node.target); break; } } } }, /** * 展示節點的子節點（子節點有可能在搜尋的過程中被隱藏了） * @param node easyui tree節點 */ showChildren: function(jqTree, node) { //easyui tree的tree物件。可以通過tree.methodName(jqTree)方式呼叫easyui tree的方法 var tree = this; //展示子節點 if (!tree.isLeaf(jqTree, node.target)) { var children = tree.getChildren(jqTree, node.target); if (children && children.length>0) { for (var i=0; i<children.length; i++) { if ($(children[i].target).is(":hidden")) { $(children[i].target).show(); } } } } }, /** * 將滾動條滾動到指定的節點位置，使該節點可見（如果有滾動條才滾動，沒有滾動條就不滾動） * @param param { * treeContainer: easyui tree的容器（即存在滾動條的樹容器）。如果為null，則取easyui tree的根UL節點的父節點。 * targetNode: 將要滾動到的easyui tree節點。如果targetNode為空，則預設滾動到當前已選中的節點，如果沒有選中的節點，則不滾動 * } */ scrollTo: function(jqTree, param) { //easyui tree的tree物件。可以通過tree.methodName(jqTree)方式呼叫easyui tree的方法 var tree = this; //如果node為空，則獲取當前選中的node var targetNode = param && param.targetNode ? param.targetNode : tree.getSelected(jqTree); if (targetNode != null) { //判斷節點是否在可視區域 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); } } } }); /** * 展示搜尋匹配的節點 */ function showMatchedNode(jqTree, tree, node) { //展示所有父節點 $(node.target).show(); $(".tree-title", node.target).addClass("tree-node-targeted"); var pNode = node; while ((pNode = tree.getParent(jqTree, pNode.target))) { $(pNode.target).show(); } //展開到該節點 tree.expandTo(jqTree, node.target); //如果是非葉子節點，需摺疊該節點的所有子節點 if (!tree.isLeaf(jqTree, node.target)) { tree.collapse(jqTree, node.target); } } /** * 判斷searchText是否與targetText匹配 * @param searchText 檢索的文字 * @param targetText 目標文字 * @return true-檢索的文字與目標文字匹配；否則為false. */ function isMatch(searchText, targetText) { return $.trim(targetText)!="" && targetText.indexOf(searchText)!=-1; } /** * 獲取easyui tree的所有node節點 */ 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; } /** * 定義獲取easyui tree的子節點的遞迴演算法 */ 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);
4.效果
