Multiple tap listeners

FeedItemView.js

listeners: {

            tap: {
                element: 'element',
                delegate: '.app-box, .doc-box, .bubble-holder',

                fn: function(e){
                    var url = e.target.name
                        , name = e.delegatedTarget.textContent
                        , divClassName = e.delegatedTarget.className
                        , appbox = "app-box"
                        , docbox =  "doc-box"
                        , bubble = "bubble-holder"
                        , feedAppController = CHLK._app.getController('feed.FeedItemViewController');

                    switch(divClassName){

                        case docbox :
                            var me = this,
                                config = {
                                    title: "Attachment downloaded",
                                    message: name,
                                    buttons: [{
                                        id: 'MsgConfirm',
                                        disabled: false
                                    }],
                                    scope: me
                                };
                            Ext.ux.plugin.AutoHideMessageBox.alert(config);
                            break;

                        case appbox :
                            feedAppController.loadTheApp(url, name);
                            break;

                        case bubble :
                            feedAppController.showCommentPop(this);
                            break;

                    }
                }
            }
            
        }