extjs 4 same component multiple tabs

i m working with extjs 4 & rails 3. i am having toolbar & tab panel. i want to use same toolbar in all the tab panel & want buttons on the toolbar to work according to tab that is active. For eg. toolbar contains add,e开发者_如何学运维dit,etc buttons. Suppose i have region & category tabs. When region tab is active i should be able to perform "ADD" operation for "Region" & so on. What can be the correct way to achieve this in extjs 4 ? I am not able to assign action on toolbar in Region & Category controllers? i referred thisbut no idea as to how can i implement it in my code ? Here is sample code of "Regions" extjs mvc controller that i have tried. The problem is if i write similar code in Category contoller for ADD btn of commontoolbar, ADD implementation of Region gets called :(

    Ext.define('overdrive.controller.Regions', {
        extend: 'Ext.app.Controller',
        views: [
            'region.RegionList',
            'region.RegionForm',
            'region.RegionPanel',
            'common.CommonToolbar'
        ],
        models: ['Region'],
        stores: ['Regions'],
         init: function() {
            this.control({
                'viewport > panel': {
                    render: this.onPanelRendered
                },
                'regionpanel':{
                    beforerender:this.addToolbar
                } ,
                'commontoolbar button[action=chk]': {
                    click: this.chk
                }

            });
        },
        chk:function()
        {

            var tabcon = Ext.getCmp('tabcon');//tabcon is id of tab panel
             var activetab = tabcon.getActiveTab();

             var activetabid = activetab.getId();
             console.log('Active Tab ID:'+activetabid);
                if(activetabid == 'regiontab'){
                alert('Clicked button in region Tab');
                }else if(activetabid == 'storetab'){
                 alert('Clicked button in store Tab');
                }
        },


       addToolbar:function()
       {

            var regionpanel=Ext.widget('regionpanel');
            var regiontab=Ext.getCmp('regiontab');
            var tabcon = Ext.getCmp('tabcon');


           regiontab.add({
                xtype:'commontoolbar', id:'regiontoolbar',
                itemId: 'regiontoolbar'
           });

        },

       addRegion: function(button) {

            var regiontoolbar=button.up('regiontoolbar');
            var regiontab = Ext.getCmp('regiontab');
            var regionpanel = regiontab.down('regionpanel');
            var regionform = regionpanel.down('regionform');
            regiontoolbar.child('#add').setDisabled(true);
            regiontoolbar.child('#edit').setDisabled(true);
            regiontoolbar.child('#delete').setDisabled(true);
            regiontoolbar.child('#save').setDisabled(false);
            regiontoolbar.child('#cancel').setDisabled(false);
            regionpanel.layout.setActiveItem(regionform);
        }
});

Hope the following code will help you:

btn = {
    id: 'button',
    width : 130,
    height : 35,
    text: 'Button',
    listeners : {
        click : function(){
         var activetab = Ext.getCmp('extabs').getActiveTab();
         var activetabid = activetab.getId();
            if(activetabid == 'regiontab'){
            alert('Clicked button in region Tab');
            }else if(activetabid == 'countrytab'){
             alert('Clicked button in country Tab');
            }
        }
    }
};
toolbar = Ext.create('Ext.Toolbar',{
    id:'extoolbar',
    width : 350,
    height : 40
});
country = {
    id : 'countrytab',
    title : 'Country'
};
region = {
    id : 'regiontab',
    title : 'Region'
};
var exTabs = Ext.create('Ext.tab.Panel',{
    id : 'extabs',
    activeTab : 0,
    width : 350,
    plain : true,
    style : 'background:none',
    items : [region,country],
    listeners : {
        beforerender : function(){
         Ext.getCmp('regiontab').add(toolbar);
            toolbar.add(btn);
        },
        tabchange : function(tp,newTab,currentTab){
            if(newTab.getId()=='countrytab'){
                toolbar.removeAll();
             Ext.getCmp('countrytab').add(toolbar);
                toolbar.add(btn);
            }
            if(newTab.getId()=='regiontab'){
                toolbar.removeAll();
             Ext.getCmp('regiontab').add(toolbar);
                toolbar.add(btn);

            }
        }
    }
});
exWindow = Ext.create('Ext.Window',{
    id : 'examplewin',
    title : 'tabs sample',
    layout : 'fit',
    width : 350,
    height : 300,
    draggable : false,
    resizable : false,
    plain : true,
    frame : false,
    shadow : false,
    items : [exTabs]
}).show();

You can check the working sample of above code by clicking the following link:

http://jsfiddle.net/kVbra/23/

1.After opening the above link you can find the result in right bottom corner.
2.As per your question one toolbar is created and it is using in two tabs with same button.
3.If you click on the button,then it will get the current tab id and it will display the different result as based on which tab is activated.

If you are strict to use only one class,may be the below code also helpful for you shruti:

Ext.define('Sample', {    
    alternateClassName: ['Example', 'Important'],     
    code: function(msg) {        
        alert('Sample for alternateClassName... ' + msg);     
    },
    renderTo :document.body
});
var hi = Ext.create('Sample');
hi.code('Sample');
var hello = Ext.create('Example');
hello.code('Example');
var imp = Ext.create('Important');
imp.code('Important');

Working sample:

http://jsfiddle.net/kesamkiran/kVbra/30/