Алексей Абисфамилинный (Все сообщения пользователя)

public class LinkedComboBoxSample implements EntryPoint {  
  
    public void onModuleLoad() {  
        Panel panel = new Panel();  
        panel.setBorder(false);  
        panel.setPaddings(15);  
  
        FormPanel form = new FormPanel();  
        form.setTitle("Linked ComboBox");  
        form.setFrame(true);  
        form.setWidth(350);  
  
        // countries store  
        Object[][] countries = new Object[][]{  
                new Object[]{"USA", "United States of America"},  
                new Object[]{"D", "Germany"},  
                new Object[]{"F", "France"},  
                new Object[]{"GB", "Great Britain"},  
        };  
  
        final Store countriesStore = new SimpleStore(new String[]{"cid", "country"}, countries);  
        countriesStore.load();  
  
        //cities store  
        Object[][] cities = new Object[][]{  
                new Object[]{new Integer(1), "USA", "New York"},  
                new Object[]{new Integer(2), "USA", "Cleveland"},  
                new Object[]{new Integer(3), "USA", "Austin"},  
                new Object[]{new Integer(4), "USA", "Los Angeles"},  
                new Object[]{new Integer(5), "D", "Munich"},  
                new Object[]{new Integer(6), "D", "Bonn"},  
                new Object[]{new Integer(7), "F", "Paris"},  
                new Object[]{new Integer(8), "F", "Nice"},  
                new Object[]{new Integer(9), "GB", "London"},  
                new Object[]{new Integer(10), "GB", "Glasgow"},  
                new Object[]{new Integer(11), "GB", "Liverpool"}  
        };  
  
        final Store citiesStore = new SimpleStore(new String[]{"id", "cid", "city"}, cities);  
        citiesStore.load();  
  
        final ComboBox countryCB = new ComboBox();  
        countryCB.setFieldLabel("Select Country");  
        countryCB.setStore(countriesStore);  
        countryCB.setDisplayField("country");  
        countryCB.setMode(ComboBox.LOCAL);  
        countryCB.setTriggerAction(ComboBox.ALL);  
        countryCB.setForceSelection(true);  
        countryCB.setValueField("cid");  
        countryCB.setReadOnly(true);  
  
        final ComboBox cityCB = new ComboBox();  
        cityCB.setFieldLabel("Select City");  
        cityCB.setStore(citiesStore);  
        cityCB.setDisplayField("city");  
        cityCB.setValueField("id");  
        cityCB.setMode(ComboBox.LOCAL);  
        cityCB.setTriggerAction(ComboBox.ALL);  
        cityCB.setLinked(true);  
        cityCB.setForceSelection(true);  
        cityCB.setReadOnly(true);  
  
        countryCB.addListener(new ComboBoxListenerAdapter() {  
  
            public void onSelect(ComboBox comboBox, Record record, int index) {  
                cityCB.setValue("");  
                citiesStore.filter("cid", comboBox.getValue());  
            }  
        });  
  
        form.add(countryCB);  
        form.add(cityCB);  
        panel.add(form);  
  
        RootPanel.get().add(panel);  
    }  
}