Question

I have I view that extends Ext.grid.Panel and I want to be able to ask the user if he really wants to close the panel after he clicks [X]. I tried with

listeners: {
            beforedestroy: function() {
                               //console.log('In');
                return false;
            }
        },

but obviously it’s not that simple. Any ideas on how to prevent the closing of the panel?

Thanks

Leron

P.S.

This is what I get from sencha forums, haven’t test it yet:

Ext.create( 'Ext.window.Window', {
    title: 'test',
    width: 200,
    height: 200,
    listeners: {
        beforeclose: function( window ) {
            Ext.Msg.confirm( 'Hey', 'Are you sure you want to close?', function( answer ) {
                if( answer == "yes" ) {
                    window.destroy();
                }
            } );
            return false;
        }
    }
} ).show(); 

Answer 1

beforeclose event should work. No?

Update:

If you want to have some user interaction (i.e. confirmation question or saving data or something like that) it will be a bit tricky…

First, in the constructor of the view do something like this:

this.on('beforeclose', function() { 
   return this.myCloseHandler(function() { this.close(); }, this);
});
this.alreadyAsked = false;

Than create handler:

myCloseHandler: function(callback, scope) {
    if (this.alreadyAsked === false) {
        this.alreadyAsked = true;
        Ext.MessageBox.show({
            msg: 'Are you sure?',
            fn: function(btn) {
               if (btn == 'yes')
                  Ext.callback(callback, scope);
               else 
                  this.alreadyAsked = false;   
            }
        });
        return false;

    }
    return true;   
}

Idea is – you return false immediately but have some flag and condition to go through the same logic without confirmation.