Tree介绍
树形结构，是程序开发，不可缺少的组件之一。ExtJs中的树，功能强大美观实用。功能齐全，拖拉，排序，异步加载等等。
在ExtJs4中Tree和Grid具有相同的父类，因此Grid具有的特性和插件在Tree上也能用。
简单的Tree
代码：
<head>
<title></title>
<link href="/ExtUI/ExtJs4.2.1/resources/css/ext-all.css" rel="stylesheet" type="text/css" />
<link href="/ExtUI/mecss/UIicon.css" rel="stylesheet" type="text/css" />
<script src="/ExtUI/ExtJs4.2.1/ext-all.js" type="text/javascript"></script>
<script src="/ExtUI/ExtJs4.2.1/locale/ext-lang-zh_CN.js" type="text/javascript"></script>
<script type="text/javascript"> Ext.onReady(function () {
//型录树Store
var treeStore = Ext.create('Ext.data.TreeStore', {
proxy: {
type: 'ajax',
url: '/Tools/106.ashx?method=getCatalogItem&cataId=' +
},
fields: ['text', 'id', 'leaf', 'cataId']
});
//型录树
var CatalogTtree = Ext.create('Ext.tree.Panel', {
store: treeStore,
border: false, //边框
renderTo: Ext.getBody(),
enableDD: true,
rootVisible: false, //隐藏根节点
useArrows:true, //树节点使用箭头
containerScroll: true,
collapsible: false,
autoScroll: false,
//singleExpand:true //展示单个子节点，其它的子节点合并。
});
CatalogTtree.expandAll(); //展开所有节点
//CatalogTtree.collapseAll(); //关闭所有节点 }); </script>
</head>
treePanel展开所有，关闭所有
CatalogTtree.expandAll(); //展开所有节点
CatalogTtree.collapseAll(); //关闭所有节点
TreeGrid简例,带弹出window的form表单
代码：
Ext.onReady(function () {
//获取store
var ClassTreeGridStore = Ext.create('Ext.data.TreeStore', {
model: 'Task',
proxy: {
type: 'ajax',
actionMethods: {
create: "POST", read: "POST", update: "POST", destroy: "POST"
},
url: '/queClass/GetClassTreeStore'
},
fields: ["qcId", "claName", "pId", "lowScroe", "topScore"],
folderSort: true
});
//获取tbar
var tbar = Ext.create("Ext.toolbar.Toolbar", {
items: [
{
text: '添加兄弟分类',
iconCls: 'a_add',
handler: function () {
AddDialog.setTitle("添加兄弟分类");
AddForm.form.reset();
Ext.getCmp("btnAdd").show();
Ext.getCmp("btnEdit").hide();
Ext.getCmp("pName").hide();
Ext.getCmp("bName").show();
if (typeof (ClassTreeGrid) == "undefined") {
return false;
}
var rows = ClassTreeGrid.getView().getSelectionModel().getSelection();
if (typeof (rows[0]) == "undefined") {
Ext.Msg.alert("提示", "请选择要操作的行！");
return false;
}
Ext.getCmp("bName").setValue(rows[0].data.claName);
AddDialog.show();
}
}, '-',
{
text: '添加子分类',
iconCls: 'a_add',
handler: function () {
AddDialog.setTitle("添加子分类");
AddForm.form.reset();
Ext.getCmp("btnAdd").show();
Ext.getCmp("btnEdit").hide();
Ext.getCmp("bName").hide();
Ext.getCmp("pName").show();
if (typeof (ClassTreeGrid) == "undefined") {
return false;
}
var rows = ClassTreeGrid.getView().getSelectionModel().getSelection();
if (typeof (rows[0]) == "undefined") {
Ext.Msg.alert("提示", "请选择要操作的行！");
return false;
}
Ext.getCmp("pName").setValue(rows[0].data.claName);
AddDialog.show();
}
}, '-',
{
text: '删除',
iconCls: 'a_cross',
handler: DelClass
}, '-',
{
text: '修改',
iconCls: 'a_edit',
handler: function () {
AddDialog.setTitle("修改分类");
AddForm.form.reset();
Ext.getCmp("btnEdit").show();
Ext.getCmp("btnAdd").hide();
Ext.getCmp("bName").hide();
Ext.getCmp("pName").hide();
if (typeof (ClassTreeGrid) == "undefined") {
return false;
}
var rows = ClassTreeGrid.getView().getSelectionModel().getSelection();
if (typeof (rows[0]) == "undefined") {
Ext.Msg.alert("提示", "请选择要操作的行！");
return false;
}
AddForm.form.setValues(rows[0].data);
AddDialog.show();
}
}, '-',
{
text: "刷新",
iconCls: "a_refresh",
handler: function () {
//刷新treepanel
ClassTreeGridStore.load();
}
}, '-',
{
text: '展开所有',
iconCls: 'a_edit2',
handler: function () {
//展开所有函数
ClassTreeGrid.expandAll();
}
}, '-',
{
text: '折叠所有',
iconCls: 'a_lock',
handler: function () {
//折叠所有函数
ClassTreeGrid.collapseAll();
}
}
]
});
//treegrid
var ClassTreeGrid = Ext.create('Ext.tree.Panel', {
tbar: tbar,
useArrows: true,
rootVisible: false,
store: ClassTreeGridStore,
multiSelect: false,
singleExpand: false,
columns: [{ //定义tree的列
xtype: 'treecolumn',
text: '分类名称', //显示的表头列名称
flex: 2,
sortable: true,
dataIndex: 'claName' //对应store的列字段名称
}, {
text: '最小分值',
flex: 1,
dataIndex: 'lowScroe',
sortable: true
}, {
text: '最大分值',
flex: 1,
dataIndex: 'topScore',
sortable: true
}]
, listeners: {
//点击行触发事件
itemclick: function (record, node) {
//把列的qcid传递给QuesGridStore刷新对应的grid或tree
QuesGridStore.load({ params: { csId: node.data.qcId } });
}
}
});
//弹出window的form表单
var AddForm = Ext.create("Ext.form.Panel", {
border: false,
fieldDefaults: {
msgTarget: 'side', //提示信息在右旁边显示图标
labelWidth: 105,
align: "right",
regexText: '格式错误', //错误提示
allowBlank: false //不与许为空
},
defaults: {
padding: 15,
width: 380
},
defaultType: "textfield",
items: [
{
xtype: "hidden",
name: 'pId',
},
{
fieldLabel: '父分类名称',
id: "pName",
name: 'pName',
disabled: true
},
{
fieldLabel: '兄弟分类名称',
id: "bName",
name: 'bName',
disabled: true
},
{
fieldLabel: '分类名称',
name: 'claName',
},
{
//表单中的数字控件
xtype: "numberfield",
fieldLabel: '最小分值',
name: 'lowScroe',
regex: /^\d+$/, //正则验证
maxLength: 100,
},
{ //表单中的数字控件
xtype: "numberfield",
fieldLabel: '最大分值',
regex: /^\d+$/,
regexText: '格式错误',
name: 'topScore',
}
]
});
//要弹出的window
var AddDialog = Ext.create("Ext.window.Window", {
iconCls: 'a_add',
closeAction: 'hide', //窗口关闭的方式：hide/close
resizable: false,
closable: true, //是否可以关闭
modal: true, //是否为模态窗口
items: AddForm,
buttons: [{
text: '添加',
iconCls: 'a_add',
id: "btnAdd",
handler: function () {
if (AddForm.form.isValid()) {
if (AddDialog.title == '添加兄弟分类') {
//O为兄弟分类，1为子分类
AddClass(0);
}
else {
AddClass(1);
}
}
}
},
{
text: '修改',
iconCls: 'a_edit', //样式
id: "btnEdit",
handler: EditClass
},
{
id: "btnCancel",
iconCls: 'a_cross', //样式
text: '重置',
handler: function () {
//重置AddForm.form表单
AddForm.form.reset();
}
}]
});
new Ext.Viewport({
layout: "border",
renderTo: Ext.getBody(),
defaults: {
bodyStyle: "background-color: #FFFFFF;",
frame: true
},
items: [{ region: "north", height: "60%", split: true, layout: "fit", border: true, items: [ClassTreeGrid] }
]
});
//添加分类
function AddClass(type) {
var rows = ClassTreeGrid.getView().getSelectionModel().getSelection();
var id = 0;
var leaf = false;
//兄弟分类
if (type == 0) {
id = rows[0].data.pId;
}
else {
id = rows[0].data.qcId;
}
Ext.Ajax.request({
method: "post",
url: "/queClass/Add",
params: { json: Ext.JSON.encode(AddForm.form.getValues()), id: id },
callback: function (options, success, response) {
if (success) {
var json = response.responseText;
json = Ext.decode(json);
ClassTreeGridStore.load();
Ext.Msg.alert("提示", json.msg);
AddDialog.hide();
}
else {
Ext.Msg.alert("提示", "系统繁忙");
}
}
});
}
//删除分类
function DelClass() {
var rows = ClassTreeGrid.getView().getSelectionModel().getSelection();
if (typeof (rows[0]) == "undefined") {
Ext.Msg.alert("提示", "请选择要操作的行！");
return false;
}
Ext.Ajax.request({
method: "post",
url: "/queClass/Delete/",
params: { qcId: rows[0].data.qcId },
callback: function (options, success, response) {
if (success) {
var json = response.responseText;
json = Ext.decode(json);
ClassTreeGridStore.load();
Ext.Msg.alert("提示", json.msg);
AddDialog.hide();
}
else {
Ext.Msg.alert("提示", "系统繁忙");
}
}
});
}
//修改分类
function EditClass() {
var rows = ClassTreeGrid.getView().getSelectionModel().getSelection();
if (typeof (rows[0]) == "undefined") {
Ext.Msg.alert("提示", "请选择要操作的行！");
return false;
}
Ext.Ajax.request({
method: "post",
url: "/queClass/Edit/",
params: { json: Ext.JSON.encode(AddForm.form.getValues()), qcId: rows[0].data.qcId },
callback: function (options, success, response) {
if (success) {
var json = response.responseText;
json = Ext.decode(json);
ClassTreeGridStore.load();
Ext.Msg.alert("提示", json.msg);
AddDialog.hide();
}
else {
Ext.Msg.alert("提示", "系统繁忙");
}
}
});
}
});treepanel右键菜单编辑
代码：
//GUID
function newGuid() {
var guid = "";
for (var i = 1; i <= 32; i++) {
var n = Math.floor(Math.random() * 16.0).toString(16);
guid += n;
if ((i == 8) || (i == 12) || (i == 16) || (i == 20))
guid += "-";
}
return guid;
} //Toopitp
Ext.tip.QuickTipManager.init(); //Model
Ext.define('MyTreeModel', {
extend: 'Ext.data.Model',
fields: ['text','id','leaf','caitNo']
}); //Store
Ext.define("MyTreeStore", {
extend: "Ext.data.TreeStore",
model: 'MyTreeModel',
proxy: {
type: 'ajax',
api: {
read: '/Tools/106.ashx?method=getCatalogItem',
},
writer: {
type: 'json',
allowSingle: false,
encode: true,
root: 'records'
}
},
root: {
id: -1,
expanded: true,
text: cataId,
},
autoLoad: true
}); var MyTreeStore = Ext.create("MyTreeStore"); Ext.define("MyTreePanel", {
extend: 'Ext.tree.Panel',
width: 250,
height: 400,
store: MyTreeStore,
hideHeaders: true,
rootVisible: true,
viewConfig: {
plugins: {
ptype: 'treeviewdragdrop'
},
listeners: {
drop: function (node, data, dropRec, dropPosition) {
store.sync();
}
}
}, initComponent: function () {
var me = this;
//可编辑
me.plugins = [me.cellEditingPlugin = Ext.create('Ext.grid.plugin.CellEditing')];
//定义列
me.columns = [{
xtype: 'treecolumn',
dataIndex: 'text',
flex: 1,
editor: {
xtype: 'textfield',
selectOnFocus: true,
validator: function (value) {
value = Ext.String.trim(value);
return value.length < 1 ? this.blankText : true;
}
}
}, {
xtype: 'actioncolumn',
width: 24,
icon: '/ExtUI/Image/a_delete.gif',
iconCls: 'x-hidden',
tooltip: '删除',
handler: Ext.bind(me.handleDeleteClick, me)
}]; //定义菜单
Ext.define('SimpleTasks.view.lists.ContextMenu', {
extend: 'Ext.menu.Menu',
xtype: 'listsContextMenu',
items: [
{
text: '兄弟节点',
iconCls: 'a_add',
id: 'new-list-item',
handler: me.handleNewListClick,
scope: me
},
{
text: '孩子节点',
iconCls: 'a_add',
id: 'new-folder-item',
handler: me.handleNewFolderClick,
scope: me
},
{
text: '删除',
iconCls: 'a_delete',
id: 'delete-folder-item',
},
{
text: '刷新',
iconCls: 'a_refresh',
id: 'refresh-folder-item',
handler: function () {
MyTreeStore.load({ params: grid.getView().getSelectionModel().getSelection()[0].data });
}
}
] }); //定义底部tbar
me.dockedItems = [{
xtype: 'toolbar',
dock: 'bottom',
items: [{
iconCls: 'a_add',
tooltip: '兄弟节点',
handler: me.handleNewListClick,
scope: me
}, {
iconCls: 'a_add',
tooltip: '孩子节点',
handler: me.handleNewFolderClick,
scope: me
},
{
iconCls: 'a_delete',
id: 'delete-folder-btn',
tooltip: '删除',
scope: me
},
{
iconCls: 'a_refresh',
id: 'refesh-folder-btn',
tooltip: '刷新',
handler: function () {
MyTreeStore.load({ params: grid.getView().getSelectionModel().getSelection()[0].data });
}
}
]
}]; me.contextMenu = Ext.create("SimpleTasks.view.lists.ContextMenu"); me.callParent();
me.on("itemmouseenter", me.showActions);
me.on("itemmouseleave", me.hideActions);
me.on("edit", me.updateNode);
me.on("afterrender", me.handleAfterListTreeRender);
me.on("beforeedit", me.handleBeforeEdit, me);
me.on("canceledit", me.handleCancelEdit);
me.on("itemcontextmenu", me.showContextMenu, me); }, //刷新树
refreshView: function () {
//refresh the data in the view.
//This will trigger the column renderers to run,
this.getView().refresh();
}, //显示actioncolumn
showActions: function (view, list, node, rowIndex, e) {
var icons = Ext.DomQuery.select('.x-action-col-icon', node);
if (view.getRecord(node).get('id') != "-1") {
Ext.each(icons, function (icon) {
Ext.get(icon).removeCls('x-hidden');
});
}
}, //隐藏actioncolumn
hideActions: function (view, list, node, rowIndex, e) {
var icons = Ext.DomQuery.select('.x-action-col-icon', node);
Ext.each(icons, function (icon) {
Ext.get(icon).addCls('x-hidden');
});
}, //Handles a click on a delete icon
handleDeleteClick: function (gridView, rowIndex, colIndex, column, e, record) {
var thisNodes=this;
Ext.Ajax.request({
url:"/Tools/106.ashx?method=deleteTreeNode&cataId="+cataId,
params:record.data,
callback:function(options,success,response){
if(success)
{
var responseJson=Ext.JSON.decode(response.responseText)[0];
if(responseJson.status=="true")
{
//这个model区别于普通的model
//在定义store的时候并没有定义fields或model属性,该model由treeStore自动创建
//该model包含树展示所需要的数据结构,具备parentNode,isLeaf,loaded等属性
var model = gridView.getRecord(gridView.findTargetByEvent(e));
thisNodes.deleteNode(model);
Ext.Msg.alert("提示",responseJson.msg);
}
else
{
Ext.Msg.alert("提示",responseJson.msg);
}
}
else
{
Ext.Msg.alert("提示","请重新操作！");
}
}
}); }, //删除节点
deleteNode: function (nodel) {
nodel.parentNode.removeChild(nodel);
//与服务器端同步
MyTreeStore.sync();
}, //更新节点
updateNode: function (editor,e,node) {
var me = this;
// //与服务器端同步
// MyTreeStore.sync(); if(e.record.data.id.length>8)
{ //插入
Ext.Ajax.request({
url:"/Tools/106.ashx?method=createTreeNode&cataId="+cataId,
params:e.record.data,
callback:function(options,success,response){
if(success)
{
var responJson=Ext.JSON.decode(response.responseText)[0];
if(responJson.status=="false")
{
Ext.Msg.alert("提示",responJson.msg);
}
else
{
MyTreeStore.load({ params: grid.getView().getSelectionModel().getSelection()[0].data });
}
}
else
{
Ext.Msg.alert("提示","系统繁忙");
}
}
});
}
else
{
//更新
Ext.Ajax.request({
url:"/Tools/106.ashx?method=updateTreeNode&cataId="+cataId,
params:e.record.data,
callback:function(options,success,response){
if(success)
{
var responJson=Ext.JSON.decode(response.responseText)[0];
if(responJson.status=="false")
{
Ext.Msg.alert("提示",responJson.msg);
}
}
else
{
Ext.Msg.alert("提示","系统繁忙");
}
}
});
}
}, //树加载完毕后设置默认选中第一个
handleAfterListTreeRender: function (tree) {
tree.getSelectionModel().select(0);
}, //编辑前判断跟节点不允许编辑
handleBeforeEdit: function (editingPlugin, e) {
return e.record.get('id') !== -1;
}, //取消编辑事件
handleCancelEdit: function (editor, e) {
var list = e.record,
parent = list.parentNode;
parent.removeChild(list);
this.getListTree().getSelectionModel().select([parent]);
}, //添加叶子节点
handleNewListClick: function (component, e) {
this.addNode(true);
}, //添加跟节点
handleNewFolderClick: function (component, e) {
this.addNode();
}, //添加节点
addNode: function (leaf) {
var me = this;
var listTree = me;
cellEditingPlugin = listTree.cellEditingPlugin,
selectionModel = listTree.getSelectionModel(),
selectedList = selectionModel.getSelection()[0], parentList = leaf?selectedList.parentNode : selectedList,
newList = Ext.create('MyTreeModel', {
id: newGuid(),
text: 'New List',
leaf: true,
loaded: true
}),
expandAndEdit = function () {
if (parentList.isExpanded()) {
selectionModel.select(newList);
cellEditingPlugin.startEdit(newList, 0);
} else {
listTree.on('afteritemexpand', function startEdit(list) {
if (list === parentList) {
selectionModel.select(newList);
cellEditingPlugin.startEdit(newList, 0);
// remove the afterexpand event listener
listTree.un('afteritemexpand', startEdit);
}
});
parentList.expand();
}
};
//判断是否是子节点
if(selectedList.isLeaf())
{
if(!leaf) //判断是添加子节点还是兄弟节点
{
MyTreeStore.getNodeById(selectedList.data.id).set('leaf', false);
}
}
parentList.appendChild(newList);
if (listTree.getView().isVisible(true)) {
expandAndEdit();
} else {
listTree.on('expand', function onExpand() {
expandAndEdit();
listTree.un('expand', onExpand);
});
listTree.expand();
}
}, //添加右键菜单
showContextMenu: function (view, list, node, rowIndex, e) {
this.contextMenu.showAt(e.getX(), e.getY());
e.preventDefault();
}
}); //编辑树Window
var EditTreeWindow=Ext.create("Ext.window.Window",{
title: '编辑树',
iconCls:'a_edit',
closeAction: 'hide', //窗口关闭的方式：hide/close
resizable: false,
closable: true, //是否可以关闭
modal: true, //是否为模态窗口
items: Ext.create("MyTreePanel")
});