ExtJs2.0学习系列(10)--Ext.TabPanel之第二式

上一篇种我们简单的了解了下tabpanel
下面我们要介绍的是,如何动态的添加标签页!
2.动态添加tabpanel的标签页
效果图:

点击"添加新标签页",会添加一个标签页,而且激活这个新的标签页.
html代码:

<body style="margin:10px;">
    
<div>
    
<id="AddNewTab" href="javascript:void(0)">添加新标签页</a>
    
</div>
</body>

js代码:

Ext.onReady(function(){
     Ext.QuickTips.init();
     
var tabsDemo=new Ext.TabPanel({
            renderTo:Ext.getBody(),
            activeTab:
0,
            height:
700,
            frame:
true,
            items:[{
                      title:
"autoLoad为html简单页面演示",
                      autoLoad:{url:
"tab1.htm",scripts:true}
            }]
     });
     
//下面是添加新标签页的关键代码,很简单方便     
     var index=0;
     Ext.get(
"AddNewTab").on("click",function(){
           tabsDemo.add({
                title:
"newtab",
                id:
"newtab"+index,
                html:
"new tab",
                closable:
true
           });
           tabsDemo.setActiveTab(
"newtab"+index);
           index
++;
     })
});

简单说明:

    其实添加的话,只要add()方法就可以了,但是我们还要激活这个新的标签页,就必须setActiveTab(newtab的索引或id),关键就是我们不好判断这个索引,所以只好设置个递增的全局变量index来给newtab取名,这样我们也就能准确的获取新的不重复的newtab了,也就容易激活了。而且我们可以通过下图看出来。

 
3.稍微修改上面的例子tabpanel(官方的例子)
效果图:


我就不多说了,关键的几个参数注释了下

<body style="margin:10px;">
    
<div>
       
<div id="AddBtn"></div>
    
</div>
</body>

js代码:

Ext.onReady(function(){
     Ext.QuickTips.init();
     
var tabsDemo=new Ext.TabPanel({
            renderTo:Ext.getBody(),
            
//resizeTabs:true,宽度能自动变化,但是影响标题的显示
            activeTab:0,
            height:
200,
            enableTabScroll:
true,//挤的时候能够滚动收缩
            width:200,
            frame:
true,
            items:[{
                      title:
"tab advantage",
                      html:
"sample1"
            }]
     });
     
     
var index=0;
     
     
//就是下面这个函数,关键的地方,非常简单也非常实用
     function addTab()
     {
         tabsDemo.add({
                title:
"newtab",
                id:
"newtab"+index,
                html:
"new tab"+index,
                closable:
true
           });
           tabsDemo.setActiveTab(
"newtab"+index);
           index
++;
     }
     
     
//设置一个按钮(上面的是一个链接,应用有点不同哦)
     new Ext.Button({
         text:
"添加新标签页",
         handler:addTab
     }).render(document.body,
"AddBtn");
});

4.为tabpanel标签页添加右键菜单
效果图:

点击"关闭其他所有页"后,

其他两个右键菜单还是道理相同.

//几个参数说明
1.enableTabScroll:true//前面已经说过了
2. listeners:{"contextmenu":function(参数1,参数2,参数3){.}}
  
//右键菜单事件,三个参数分别为当前tabpanel,当前标签页panle,时间对象e
3.//扩充2,每个标签页都有激活和去激活事件
   activate和deactivate,他们的执行函数有个参数,就是当前标签页。
  例如: items:[{
                      title:
"tab advantage",
                      listeners:{
                            deactivate:
function(a){alert("删除,a表示当前标签页");},
                            activate:
function(){alert("激活");}
                      },
                      html:
"sample1"
            }]
4.menu=new Ext.menu.Menu()//menu组件,就不多说了,后面会专门分析下,不过不要忘记menu.showAt(e.getPoint());了

html代码和上面的例子的html代码一样.
js代码:

Ext.onReady(function(){
     Ext.QuickTips.init();
     
var tabsDemo=new Ext.TabPanel({
            renderTo:Ext.getBody(),
            
//resizeTabs:true,宽度能自动变化,但是影响标题的显示
            activeTab:0,
            height:
200,
            enableTabScroll:
true,//挤的时候能够滚动收缩
            width:400,
            frame:
true,

            
//下面是比上面例子新增的关键右键菜单代码
            listeners:{
                     
//传进去的三个参数分别为:这个tabpanel(tabsDemo),当前标签页,事件对象e
                    "contextmenu":function(tdemo,myitem,e){
                                menu
=new Ext.menu.Menu([{
                                         text:
"关闭当前页",
                                         handler:
function(){
                                            tdemo.remove(myitem);
                                         }
                                },{
                                         text:
"关闭其他所有页",
                                         handler:
function(){
                                            
//循环遍历
                                            tdemo.items.each(function(item){
                                                 
if(item.closable&&item!=myitem)
                                                 {
                                                    
//可以关闭的其他所有标签页全部关掉
                                                    tdemo.remove(item);
                                                 }
                                            });
                                         }
                                },{
                                         text:
"新建标签页",
                                         handler:addTab
                                }]);
                                
//显示在当前位置
                                menu.showAt(e.getPoint());
                     }
            },

            items:[{
                      title:
"tab advantage",
                      html:
"sample1"
            }]
     });
     
     
var index=0;
     
     
function addTab()
     {
         tabsDemo.add({
                title:
"ntab"+index,
                id:
"newtab"+index,
                html:
"new tab"+index,
                closable:
true
           });
           tabsDemo.setActiveTab(
"newtab"+index);
           index
++;
     }
     
new Ext.Button({
         text:
"添加新标签页",
         handler:addTab
     }).render(document.body,
"AddBtn");
});

关于tabpanel的简单使用就说到了这里.



posted @ 2008-08-14 23:57 谦虚的天下 阅读(...) 评论(...) 编辑 收藏