Listener to Tab Item Click in Sencha - sencha-touch-2

Question

In my application, I'm using a tab panel with 5 items in it. Each item holds around 6 panels added in card layout. When I'm at the last panel inside a tab item, I need to get back to the initial panel by clicking on the bottom tab panel (somewhat similar to a normal tab view controller in iOS). I have came across some solutions I found here, but it seems to work only when I switch between the tabs. In fact I want to listen to the click event on the same tab icon. How can I do this?

Answer 1

I have worked on your problem. I think this is exactly what you want. Hope this helps. If not so, please leave a comment.
1). View (MyTabPanel1.js)
Ext.define('MyApp.view.MyTabPanel1', {
extend: 'Ext.tab.Panel',
config: {
scrollable: 'vertical',
items:
[
{
xtype: 'panel',
id:'cardpanel1',
title: 'Tab1',
layout: 'card',
items: [
{
html: "First Item",
items:
[
{
xtype: 'button',
text: 'Forward',
handler: function() {
Ext.getCmp('cardpanel1').setActiveItem(1);
console.log('Going to Second Item');
}
}
]
},
{
html: "Second Item",
items:
[
{
xtype: 'button',
ui: 'confirm',
text: 'Go back',
handler: function() {
Ext.getCmp('cardpanel1').setActiveItem(0);
console.log('Going to First Item');
}
}
]
}
]
},
{
xtype: 'panel',
title: 'Tab2',
scrollable: true,
items: [
{
xtype: 'button',
margin: 10,
ui: 'action',
text: 'Tab2'
}
]
},
{
xtype: 'panel',
title: 'Tab3',
scrollable: true,
items: [
{
xtype: 'button',
margin: 10,
ui: 'action',
text: 'Tab3'
}
]
}
]
}
});
2). Controller (MainController.js)
Ext.define('MyApp.controller.MainController', {
extend: 'Ext.app.Controller',
config: {
control: {
"tabpanel #ext-tab-1":{ //ext-tab-1 is the id for the 1st tab generated by Sencha
tap: 'ontap'
}
}
},
ontap: function (){
console.log('inside controller');
Ext.getCmp('cardpanel1').setActiveItem(0);
}
});

Answer 2

I would give a much simpler solution
This is my view called Viewport which is a TabPanel:
Ext.define('Sencha.view.iphone.Viewport',{
extend: 'Ext.TabPanel',
xtype: 'newviewport',
alias: 'widget.newTabPanel',
Now in my controller file:
Ext.define('Sencha.controller.iphone.main', {
extend: 'Ext.app.Controller',
config:
{
refs: {
theMainTabPanelTabbarTab: 'newTabPanel > tabbar > tab', //this the tab of the tabpanel, if we listen to it that way we will know of tab panel tap.
},
control: {
theMainTabPanelTabbarTab:{
tap: 'onTapMainTabPanel'
}
}
This is a working code and works fine. Hopefully this will help you.