官方文档: [url]http://www.trirand.com/jqgridwiki/doku.php?id=wiki:treegrid[/url]
[color=red][b]问题和注意[/b][/color]：
1. 如果grid的参数存在"rownumbers": true, "rownumWidth": 20,那么无法在正确的位置显示ExpandColumn信息，他会显示在ExpandColumn的前一列。所以应该动态计算并放到下一列。可能会引起setTreeRow方法的错误，因为这个方法是使用真实的ExpandColumn。
2. jsonReader: {
root: "dataRows", //[color=darkblue]设定这个参数，有时候也无法正常现实[/color]
repeatitems : false //[color=darkblue]不需要再去后台刷新，否则可能有问题，所以最好第一次就加载所有数据[/color]
}
3. gridview， boolean 设置为true将提高5~10倍的显示速度。但不能再使用treeGrid, subGrid, 或afterInsertRow事件
4. 如果getNodeParent方法无效，可能是因为你给的recorddata.parentId的类型不对，这里需要recorddata.parentId是字符串，才能找到的.
5. collapseNode和collapseRow，expandNode和expandRow一般是成对调用。
6. 移动一个节点以及它的子节点。要字节加方法，才能实现,其实它至此的treegrid功能很弱，一些东西要自己实现，后面附加一些自己实现的方法
第一个列子
/pages/demo/tree.json
----------------------------------
{
"total":11,
"page":1,
"records":11,
"rows":[
{"id":1, "name":"Pandy1", "cell":["第一级1",0,null,false,false]},
{"id":3, "name":"Pandy2", "cell":["第二级1",1,1,true,false]},
{"id":2, "name":"Pandy3", "cell":["第一级2",0,null,true,false]}
]
}<%@ page language="java" contentType="text/html;charset=utf-8" pageEncoding="utf-8" %>
<%@ include file="/common/taglibs.jsp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script type="text/javascript" src="<c:url value="/pages/org/grid.treegrid.js"/>"></script>
<script type="text/javascript">
$(document).ready(function () {
$("#treegrid").jqGrid({
treeGrid: true,
treeGridModel: 'adjacency',
ExpandColumn: 'name',
ExpandColClick: true,
url: '/pages/demo/tree.json',
datatype: 'json',
colNames: ["管理选项"],
colModel: [
{ name: 'name', index: 'name' }
],
pager: "false",
height: 'auto',
width: '210',
viewrecords: true,
// caption: 'none',
jsonReader: {
root: "rows",
total: "total",
repeatitems: true
}
});
})
;
</script>
</head>
<body>
<table id="treegrid"></table>
<div id="ptreegrid"></div>
</body>
</html>第二个例子
[
{"id":0,"username":"王三1","level":0,"address":"USA","isLeaf":false,"age":20,"expanded":true,"password":"123"},
{"id":1,"username":"王三2","level":1,"address":"USA","isLeaf":false,"age":21,"parent":0,"expanded":true,"password":"123"},
{"id":2,"username":"王三3","level":2,"address":"USA","isLeaf":true,"age":22,"parent":1,"expanded":true,"password":"123"}
]<%@ page language="java" contentType="text/html;charset=utf-8" pageEncoding="utf-8" %>
<%@ include file="/common/taglibs.jsp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script type="text/javascript" src="<c:url value="/pages/org/grid.treegrid.js"/>"></script>
<script type="text/javascript">
$(document).ready(function(){
jQuery("#treegrid").jqGrid({
treeGrid: true,
treeGridModel: 'adjacency', //treeGrid模式，跟json元数据有关 ,adjacency/nested
ExpandColumn : 'username',
scroll: "true",
url: '/pages/demo/tree1.json',
datatype: 'json',
colNames:['编号','姓名','密码','年龄','地址','出生日期'],
colModel:[
{name:'id',index:'id', width:90,sorttype:"int"},
{name:'username',index:'username', width:110,sorttype:"int"},
{name:'password',index:'password', width:80},
{name:'age',index:'age', width:80},
{name:'address',index:'address', width:80},
{name:'time',index:'time', width:80,sorttype:"date"}
],
pager: "false",
sortname: 'id',
sortorder: "desc",
jsonReader: {
root: "dataRows",
repeatitems : false
},
treeReader : {
level_field: "level",
parent_id_field: "parent",
leaf_field: "isLeaf",
expanded_field: "expanded"
},
caption: "jqGrid test",
mtype: "POST",
height: "auto", // 设为具体数值则会根据实际记录数出现垂直滚动条
rowNum : "-1", // 显示全部记录
shrinkToFit:false // 控制水平滚动条
});
});
</script>
</head>
<body>
<table id="treegrid"></table>
</body>
</html>[color=blue][b]一些自己实现的方法[/b][/color]
/* 以下是常用的方法 */
/**
* 设定默认关闭的等级，同时自动关闭它的下一级
* 这里递归，出现错误
* @param GridConfig
* @param level
*/
/* --------------------------- tree grid for jqGrid ------------------------------- */
setDefaultOpenLevel: function (GridConfig, level) {
var childRows = $("#" + GridConfig.divId).jqGrid('getRootNodes');
for (var i = 0; i < childRows.length; i++) {
var rows = $("#" + GridConfig.divId).jqGrid('getNodeChildren', childRows[0]);
for (var m = 0; m < rows.length; m++) {
if (rows[m].level <= level) {
$("#" + GridConfig.divId).jqGrid('collapseNode', rows[m]);
$("#" + GridConfig.divId).jqGrid('collapseRow', rows[m]);
}
//遍历导致浏览器崩溃，所以多做一次循环，进入深一层继续关闭就好.
var trows = $("#" + GridConfig.divId).jqGrid('getNodeChildren', rows[m]);
for (var k = 0; k < trows.length; k++) {
if (trows[k].level <= (level + 1)) {
$("#" + GridConfig.divId).jqGrid('collapseNode', trows[k]);
$("#" + GridConfig.divId).jqGrid('collapseRow', trows[k]);
}
}
}
}
},
/**
* 展开某个节点的所有父节点
* @param GridConfig
* @param id
*/
openParentsNode: function (GridConfig, rowid) {
var currNode = $.GridUtils.getCurrentNode(GridConfig, rowid);
currNode.parentId=""+currNode.parentId;
var parent = $("#" + GridConfig.divId).jqGrid('getNodeParent', currNode);
if (parent != null) {
$("#" + GridConfig.divId).jqGrid('expandNode', parent);
$("#" + GridConfig.divId).jqGrid('expandRow', parent);
$.GridUtils.openParentsNode(GridConfig, parent.id);
}
},
getAllChildrenNodes: function (GridConfig, root, level, treeList) {
if (typeof treeList == "undefined") {
treeList = [];
}
var chs = $("#" + GridConfig.divId).jqGrid('getNodeChildren', root);
treeList[treeList.length] = root;
if (chs != null && chs.length > 0) {
for (var i = 0; i < chs.length; i++) {
$.GridUtils.getAllChildrenNodes(GridConfig, chs[i], level + 1, treeList);
}
}
return treeList;
},
/**
* 自己实现获得父节点方法
* @param GridConfig
* @param rowid
* @returns {*}
*/
getNodeParent: function (GridConfig, rowid) {
var roots = $("#" + GridConfig.divId).jqGrid('getRootNodes');
var row = $.GridUtils.getRowData(GridConfig, rowid);
for (var i = 0; i < roots.length; i++) {
var treeList = $.GridUtils.getAllChildrenNodes(GridConfig, roots[i], 0);
for (j = 0; j < treeList.length; j++) {
if (treeList[j].id == row.parentId) {
return treeList[j]
}
}
}
return null;
},
/**
* 自己实现获得当前节点方法
* @param GridConfig
* @param rowid
* @returns {*}
*/
getCurrentNode: function (GridConfig, rowid) {
var roots = $("#" + GridConfig.divId).jqGrid('getRootNodes');
var row = $.GridUtils.getRowData(GridConfig, rowid);
for (var i = 0; i < roots.length; i++) {
var treeList = $.GridUtils.getAllChildrenNodes(GridConfig, roots[i], 0);
for (j = 0; j < treeList.length; j++) {
if (treeList[j].id == row.id) {
return treeList[j]
}
}
}
return null;
},
/**
* 第一个节点是当前节点，第二个以及后面的，属于它的子节点
* @param GridConfig
* @param rowid
* @returns {*}
*/
getAllChildrenNodesByRowId: function (GridConfig, rowid) {
var row = $.GridUtils.getRowData(GridConfig, rowid);
row._id_ = row.id;
var rowList = $.GridUtils.getAllChildrenNodes(GridConfig, row, row.level);
if (rowList == null || rowList.length == 0)
return rowList;
if (rowList != null && rowList.length > 0) {
//替换当前节点
rowList[0] = $.GridUtils.getCurrentNode(GridConfig, rowid);
}
return rowList;
},
/**
* 自己实现的删除节点以及子节点,注意，先从叶子删除
* @param GridConfig
* @param rowid
*/
deleteTreeNodeAndChildren: function (GridConfig, rowid) {
var treeList = $.GridUtils.getAllChildrenNodesByRowId(GridConfig, rowid);
//先删除子节点再删除当前节点
for (var i = treeList.length - 1; i >= 0; i--) {
if (treeList[i] != null)
$("#" + GridConfig.divId).jqGrid('delTreeNode', treeList[i].id);
}
},
/**
* 移动一个节点到另一个节点
* @param GridConfig
* @param newNodeData
*/
moveTreeNode: function (GridConfig, newNodeData) {
if (typeof(newNodeData.parentId) == "undefined") {
alert("没有设定父节点ID");
return;
}
var levelPad = 0; //用于校对心节点的level
var rowid = typeof(newNodeData.rowid) == "undefined" ? newNodeData.id : newNodeData.rowid;
var newParentId = newNodeData.parentId;
var newParent;
var oldParent;
//获得之前的当前节点以及所有子节点
var treeList = $.GridUtils.getAllChildrenNodesByRowId(GridConfig, rowid);
//alert("treeList=" + $.toJSON(treeList));
if (treeList != null && treeList.length > 0) {
newParent = $.GridUtils.getCurrentNode(GridConfig, newParentId);
oldParent = $.GridUtils.getCurrentNode(GridConfig, treeList[0].parentId);
//新旧的父节点的level差量
if (newParent != null) {
//levelPad = newParent.level - treeList[0].level;
levelPad = newParent.level - oldParent.level;
}
//alert("newParent="+ $.toJSON(newParent));
//alert("oldParent="+ $.toJSON(oldParent));
//alert("levelPad="+ levelPad);
}
//删除当前节点以及所有子节点
$.GridUtils.deleteTreeNodeAndChildren(GridConfig, rowid);
//alert("deleteTreeNodeAndChildren");
//更新当前节点的业务信息
treeList[0] = $.extend(treeList[0], newNodeData);
for (var i = 0; i < treeList.length; i++) {
treeList[i]._id_ = treeList[i].id;
treeList[i].loaded = true;
//新旧的父节点的level差量 + 1,就是当前节点应该的level
treeList[i].level = treeList[i].level + levelPad;
//alert("treeList[i]=" + $.toJSON(treeList[i]));
$("#" + GridConfig.divId).jqGrid('addChildNode', treeList[i].id, treeList[i].parentId, treeList[i]);
}
$.GridUtils.openParentsNode(GridConfig, treeList[0].id);
//return;
//旧的父节点不存在子节点的时候，无法隐藏图标，另求其他方法
//重新检查旧的父节点，当旧的父节点已经不存在子节点的时候，应该重新读取，删除，再加入，保证图标隐藏。
treeList = $.GridUtils.getAllChildrenNodesByRowId(GridConfig, oldParent.id);
if (treeList != null && treeList.length == 1) {
$.GridUtils.deleteTreeNodeAndChildren(GridConfig, treeList[0].id);
treeList[0]._id_ = oldParent.id;
treeList[0].loaded = true;
treeList[0].isLeaf = true;
//alert("treeList[0]=" + $.toJSON(treeList[0]));
$("#" + GridConfig.divId).jqGrid('addChildNode', treeList[0].id, treeList[0].parentId, treeList[0]);
}
}
