Set a minimum limit in a custom multifield component


I have a custom multifield component with a maximum limit of 5 elements applied to the 'Add Item' button.

I need to add a similar listener logic to the 'OK' button of the dialog box to check if the minimum number of items (3) have been added or not.

How can that be achieved ? I didn't find any sample code to add a listener code to the button ..


I've done this same sort of thing with a listener on the beforesubmit event of the Dialog (see beforesubmit for CQ.Dialog at <a href="http://dev.day.com/docs/en/cq/current/widgets-api/index.html" rel="nofollow">http://dev.day.com/docs/en/cq/current/widgets-api/index.html</a> - search for "Dialog"):

<listeners jcr:primaryType="nt:unstructured" beforesubmit="function(dialog){return myNamespace.myCustomFunction(dialog);}"/>

Then the custom JavaScript function, included on the page via a client library, could be something like this:

myNamespace = {}; myNamespace.myCustomFunction = function (dialog) { var isValid = function () { var valStatus = true; ... custom JavaScript/jQuery to check if 3 items exist ... return valStatus; }; if (!isValid()) { CQ.Ext.Msg.show({title: 'Validation Error', msg: 'Must contain at least 3 items!', buttons: CQ.Ext.MessageBox.OK, icon: CQ.Ext.MessageBox.ERROR}); return false; } else { return true; } }


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