gistfile1.groovy

// View

application(title: 'Sample', sizeToScene: true, centerOnScreen: true) {
    scene(fill: black, width: 400, height: 300) {
        vbox(padding: 80) {
            comboBox(id: 'combo')
            noparent { combo.items = model.monthList }
            button(loadAction)
        }
    }
}

// Model

import javafx.collections.*
class SampleModel {
    List monthList = FXCollections.observableList([new Date()])
}

// Controller

import griffon.transform.Threading
class SampleController {
    def model

    @Threading(Threading.Policy.SKIP)
    def load = {
        def months = [new Date(), new Date()]
        model.monthList.addAll(months)
    }
}