In AEM how to add a new node called “listeners” in the component dialog ,without using dialog.xml file - aem

Question

Actaully i am using "before submit" listener to do some validation for my selection box
I have reffered the following link:
https://helpx.adobe.com/experience-manager/using/classic_dialog_validation.html.
But "before submit" method calling only when i place ,
dialog listener in the dialog root level only.
how to place dialog listener in dialog root level(I checked in my project there is no dialog.xml file ,they using only java code to construct component dialog).
Can anyone please help me in this ?enter image description here
Dialog property construction code :
#DialogField(name ="./validateProgram",
fieldLabel = "Validate Program",
fieldDescription = "(synchronized)",
additionalProperties = {
#Property(renderIn = Property.RenderValue.TOUCH,
name = "validation",
value = "validation-program")
},
listeners = {
#Listener(name ="beforesubmit",
value = "function(dialog){" +
"return programValidation.beforeSubmit(dialog);"+
"}")
})
#Selection(
type ="select",
optionsProvider = " ",
dataSource = "/resourcetype/data")
public final String validateProgram;
Java Script code:
window.onload = function() {
programValidation.init();
};
var programValidation= programValidation|| (function($) {
function initialize() {
};
function validate() {
alert("inside validate method");
var res = true;
return res;
};
return {
beforeSubmit: validate,
init: initialize
}
})(jQuery);

Answer 1

You are using the cq component maven plugin this a very vital piece of information to get your question answered.
I have not used this plugin before, but in your case, I assume you are looking for the Listener annotation where you can set the name as beforesubmit and the value as function(){alert(1)}
you'll probably have to set the annotation on a local variable similar to how you would annotate a dialog field '#DialogField', find more docs in the plugin's usage page here: http://code.digitalatolson.com/cq-component-maven-plugin/usage.html
Hope this helps.

Answer 2

Thanks for your support. Found the following way to solve the issue .
I added ValidateFields method from within the 2 listeners (FIELD_LISTENER_LOAD_CONTENT and FIELD_LISTENER_SELECTION_CHANGED)
function ValidateFields(dialog) {
dialog.on("beforesubmit", function(e) {
if(<condtion failed>)
CQ.Ext.Msg.alert(CQ.I18n.getMessage("Error"), CQ.I18n.getMessage("<error message>"));
return false;
} else {
return true;
}
}, this);
}