Struts2、Spring3、MyBatis3整合ExtJS，完成CheckNodeColumnTree

前面介绍了ColumnTree：http://www.cnblogs.com/hoojo/archive/2011/05/11/2043426.html

http://www.cnblogs.com/hoojo/archive/2011/05/11/2043453.html

加入CheckNodeColumnTree

A、首先在AccountAction中添加如下代码：

private String jsonText;

public String getJsonText() {

    return jsonText;

public String checkNodeColumnTreeData() throws Exception {

    jsonText = JSONUtil.serialize(results);

    //ServletActionContext.getResponse().getWriter().print(jsonText);

    return "showData";

我们不直接使用Servlet的response方法，这样会使Action耦合Servlet的API。我们直接在Action中提供一个jsonText的属性，给该属性提供getter方法。然后当执行checkNodeColumnTreeData这个方法的时候，为jsonText赋值。等待请求成功，跳转到showData的视图中直接去取jsonText的值即可。

B、看看struts.xml中的配置

<action name="account" class="accountAction">

    <result type="redirect">account!show.action</result>

    <result name="show">/show.jsp</result>

    <result name="showData">/showData.jsp</result>

    <result name="tree" type="json">

        <param name="excludeProperties">acc</param>

        <param name="contentType">text/html</param>

    </result>

</action>

就配置一个result就可以了，跳转到showData页面

C、下面看看showData页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8" contentType="text/text; charset=UTF-8"%>

${jsonText}

代码比较简单，设置下页面才contentType、然后用el表达式取出jsonText的值即可。

D、下面看看CheckNodeColumnTree代码

Ext.hoo.tree.UserCheckNodeColumnTree.js

/**

 * @function CheckNode ColumnTree 多列信息的tree

 * @auhor: hoojo

 * @createDate: Aug 29, 2010 10:39:02 PM

 * @blog: blog.csdn.net/IBM_hoojo

 * @email: hoojo_@126.com

*/

Ext.ns("Ext.hoo.tree");

Ext.hoo.tree.UserCheckNodeColumnTree = Ext.extend(Ext.tree.ColumnTree, {

    constructor: function () {

        Ext.hoo.tree.UserCheckNodeColumnTree.superclass.constructor.call(this, {

            renderTo: "show",

            title: "远程数据",

            width: 600,

            hieght: 400,

            autoScroll: true,

            rootVisible: true,

            checkModel: 'cascade',//级联多选，如果不需要checkbox,该属性去掉

              onlyLeafCheckable: false,//所有结点可选，如果不需要checkbox,该属性去掉

              columns: [{

                header: "编号",

                width: 100,

                dataIndex: "accountId"

            }, {

                header: "用户名称",

                width: 100,

                dataIndex: "username"

            }, {

                header: "密码",

                width: 100,

                dataIndex: "password"

            }, {

                header: "创建时间",

                width: 150,

                dataIndex: "createTime"

}],

            loader: new Ext.tree.TreeLoader({

                dataUrl: Ext.hoo.tree.UserCheckNodeColumnTree.TREE_DATA_URL,

                clearOnLoad: false,

                baseAttrs: {

                    uiProvider: Ext.ux.ColumnTreeCheckNodeUI,

                    leaf: true

}),

            root: new Ext.tree.AsyncTreeNode({

                text: "用户基本信息",

                id: "root"

})

});

});

Ext.hoo.tree.UserCheckNodeColumnTree.TREE_DATA_URL = "account!checkNodeColumnTreeData.action";

Ext.onReady(function () {

    Ext.BLANK_IMAGE_URL = "ext2/resources/images/default/s.gif";

    new Ext.hoo.tree.UserCheckNodeColumnTree();

});

在webroot目录的jslib中加入这个文件Ext.hoo.tree.UserCheckNodeColumnTree.js，然后导入到html中即可。

E、上面的代码用到了Ext.ux.ColumnTreeCheckNodeUI这个UI，我们需要加入这个UI文件Ext.tree.ColumnTreeCheckNodeUI.js，代码如下：

/*

 * Ext JS Library 2.0

 * Copyright(c) 2006-2007, Ext JS, LLC.

 * licensing@extjs.com

 * http://extjs.com/license

*/

Ext.tree.ColumnTree = Ext.extend(Ext.tree.TreePanel, {

    //lines:false,

    borderWidth: Ext.isBorderBox ? 0 : 2, // the combined left/right border for each cell

    cls:'x-column-tree',

    scrollOffset : 18,

    onRender : function(){

        Ext.tree.ColumnTree.superclass.onRender.apply(this, arguments);

        this.headers = this.body.createChild(

            {cls:'x-tree-headers '},this.body.dom);

        var cols = this.columns, c;

        var totalWidth = 0;

        for(var i = 0, len = cols.length; i < len; i++){

             c = cols[i];

             totalWidth += c.width;

             this.headers.createChild({

                 cls:'x-tree-hd ' + (c.cls?c.cls+'-hd':''),

                 cn: {

                     cls:'x-tree-hd-text',

                     html: c.header

},

                 style:'width:'+(c.width-this.borderWidth)+'px;'

});

        this.headers.createChild({

             cls:'x-tree-hd ',

             cn: {

                 html: ''

},

             style:'width:'+this.scrollOffset+'px;'

});

        totalWidth += this.scrollOffset;

        this.headers.createChild({cls:'x-clear'});

        // prevent floats from wrapping when clipped

        this.headers.setWidth(totalWidth);

        totalWidth -= this.scrollOffset;

        this.innerCt.setWidth(totalWidth);

});

Ext.tree.ColumnTreeNodeUI = Ext.extend(Ext.tree.TreeNodeUI, {

    focus: Ext.emptyFn, // prevent odd scrolling behavior

    renderElements : function(n, a, targetNode, bulkRender){

        this.indentMarkup = n.parentNode ? n.parentNode.ui.getChildIndent() : '';

        var t = n.getOwnerTree();

        var cols = t.columns;

        var bw = t.borderWidth;

        var c = cols[0];

        var cb = typeof a.checked == 'boolean';

        if(typeof this.checkModel != 'undefined'){

            cb = (!this.onlyLeafCheckable || n.isLeaf());

        var href = a.href ? a.href : Ext.isGecko ? "" : "#";

        var buf = ['<li class="x-tree-node"><div ext:tree-node-id="',n.id,'" class="x-tree-node-el x-tree-node-leaf x-unselectable ', a.cls,'" unselectable="on">',

                '<div class="x-tree-col" style="width:',c.width-bw,'px;">',

                    '<span class="x-tree-node-indent">',this.indentMarkup,"</span>",

                    '<img src="', this.emptyIcon, '" class="x-tree-ec-icon x-tree-elbow">',

                    '<img src="', a.icon || this.emptyIcon, '" class="x-tree-node-icon',(a.icon ? " x-tree-node-inline-icon" : ""),(a.iconCls ? " "+a.iconCls : ""),'" unselectable="on">',

                    cb ? ('<input class="x-tree-node-cb" type="checkbox" ' + (a.checked ? 'checked="checked" />' : '/>')) : '',

                    '<a hidefocus="on" class="x-tree-node-anchor" href="',href,'" tabIndex="1" ',

                    a.hrefTarget ? ' target="'+a.hrefTarget+'"' : "", '>',

                    '<span unselectable="on">', n.text || (a[c.dataIndex]?(c.renderer ? c.renderer(a[c.dataIndex], n, a) : a[c.dataIndex]):''),"&nbsp;</span></a>",

                "</div>"];

         for(var i = 1, len = cols.length; i < len; i++){

             c = cols[i];

             buf.push('<div class="x-tree-col ',(c.cls?c.cls:''),'" style="width:',c.width-bw,'px;">',

                        '<div class="x-tree-col-text">',(a[c.dataIndex]?(c.renderer ? c.renderer(a[c.dataIndex], n, a) : a[c.dataIndex]):''),"&nbsp;</div>",

                      "</div>");

         buf.push('<div class="x-clear"></div>',

            '</div>',

            '<ul class="x-tree-node-ct" style="display:none;"></ul>',

            "</li>");

        if(bulkRender !== true && n.nextSibling && n.nextSibling.ui.getEl()){

            this.wrap = Ext.DomHelper.insertHtml("beforeBegin",n.nextSibling.ui.getEl(), buf.join(""));

        }else{

            this.wrap = Ext.DomHelper.insertHtml("beforeEnd", targetNode, buf.join(""));

        this.elNode = this.wrap.childNodes[0];

        this.ctNode = this.wrap.childNodes[1];

        var cs = this.elNode.firstChild.childNodes;

        this.indentNode = cs[0];

        this.ecNode = cs[1];

        this.iconNode = cs[2];

        var index = 3;

        if(cb){

            this.checkbox = cs[3];

            index++;

        this.anchor = cs[index];

        this.textNode = cs[index].firstChild;

});

Ext.ux.ColumnTreeCheckNodeUI = function() {

    //多选: 'multiple'(默认)

    //单选: 'single'

    //级联多选: 'cascade'(同时选父和子);'parentCascade'(选父);'childCascade'(选子)

    this.checkModel = 'multiple';

    //only leaf can checked

    this.onlyLeafCheckable = false;

    Ext.ux.ColumnTreeCheckNodeUI.superclass.constructor.apply(this, arguments);

};

Ext.extend(Ext.ux.ColumnTreeCheckNodeUI, Ext.tree.ColumnTreeNodeUI, {

    renderElements : function(n, a, targetNode, bulkRender){

        var t = n.getOwnerTree();

        this.checkModel = t.checkModel || this.checkModel;

        this.onlyLeafCheckable = t.onlyLeafCheckable || false;

        Ext.ux.ColumnTreeCheckNodeUI.superclass.renderElements.apply(this, arguments);

        var cb = (!this.onlyLeafCheckable || n.isLeaf());

        if(cb){

            Ext.fly(this.checkbox).on('click', this.check.createDelegate(this,[null]));

},

    // private

    check : function(checked){

        var n = this.node;

        var tree = n.getOwnerTree();

        this.checkModel = tree.checkModel || this.checkModel;

        if( checked === null ) {

            checked = this.checkbox.checked;

        } else {

            this.checkbox.checked = checked;

        n.attributes.checked = checked;

        tree.fireEvent('check', n, checked);

        if(!this.onlyLeafCheckable){

            if(this.checkModel == 'cascade' || this.checkModel == 'parentCascade'){

                var parentNode = n.parentNode;

                if(parentNode !== null) {

                    this.parentCheck(parentNode,checked);

            if(this.checkModel == 'cascade' || this.checkModel == 'childCascade'){

                if( !n.expanded && !n.childrenRendered ) {

                    n.expand(false,false,this.childCheck);

                }else {

                    this.childCheck(n);

        } else if(this.checkModel == 'single'){

            var checkedNodes = tree.getChecked();

            for(var i=0;i<checkedNodes.length;i++){

                var node = checkedNodes[i];

                if(node.id != n.id){

                    node.getUI().checkbox.checked = false;

                    node.attributes.checked = false;

                    tree.fireEvent('check', node, false);

},

    // private

    childCheck : function(node){

        var a = node.attributes;

        if(!a.leaf) {

            var cs = node.childNodes;

            var csui;

            for(var i = 0; i < cs.length; i++) {

                csui = cs[i].getUI();

                if(csui.checkbox.checked ^ a.checked)

                    csui.check(a.checked);

},

    // private

    parentCheck : function(node ,checked){

        var checkbox = node.getUI().checkbox;

        if(typeof checkbox == 'undefined')return ;

        if(!(checked ^ checkbox.checked))return;

        if(!checked && this.childHasChecked(node))return;

        checkbox.checked = checked;

        node.attributes.checked = checked;

        node.getOwnerTree().fireEvent('check', node, checked);

        var parentNode = node.parentNode;

        if( parentNode !== null){

            this.parentCheck(parentNode,checked);

},

    // private

    childHasChecked : function(node){

        var childNodes = node.childNodes;

        if(childNodes || childNodes.length>0){

            for(var i=0;i<childNodes.length;i++){

                if(childNodes[i].getUI().checkbox.checked)

                    return true;

        return false;

},

    toggleCheck : function(value){

        var cb = this.checkbox;

        if(cb){

            var checked = (value === undefined ? !cb.checked : value);

            this.check(checked);

});

F、在html页面中导入这些js库即可运行示例

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>

    <head>

        <title>UserCheckNodeColumnTree 示例</title>

        <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />

        <meta http-equiv="author" content="hoojo"/>

        <meta http-equiv="email" content="hoojo_@126.com"/>

        <meta http-equiv="ext-lib" content="verson 2.2"/>

        <meta http-equiv="blog" content="http://blog.csdn.net/IBM_hoojo"/>

        <meta http-equiv="blog" content="http://hoojo.cnblogs.com"/>

        <link rel="stylesheet" type="text/css" href="ext2/resources/css/ext-all.css" />

        <link rel="stylesheet" type="text/css" href="jslib/column-tree.css" />

        <script type="text/javascript" src="ext2/adapter/ext/ext-base.js"></script>

        <script type="text/javascript" src="ext2/ext-all.js"></script>

        <script type="text/javascript" src="ext2/build/locale/ext-lang-zh_CN-min.js"></script>

        <script type="text/javascript" src="jslib/Ext.tree.ColumnTreeCheckNodeUI.js"></script>

        <script type="text/javascript" src="jslib/Ext.hoo.tree.UserCheckNodeColumnTree.js"></script>

    </head>

    <body>

        <div id="show" style="margin-left: 200px; margin-top: 50px;"></div>

    </body>

</html>

运行后，效果如下：

如果有子节点的话，可以选择、展开子节点

posted on 2011-05-12 12:52 hoojo 阅读(3661) 评论(5) 编辑收藏举报