/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.click.examples.page.form.dynamic;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.click.control.FieldSet;
import org.apache.click.control.Option;
import org.apache.click.control.Select;
import org.apache.click.control.Submit;
import org.apache.click.dataprovider.DataProvider;
import org.apache.click.element.Element;
import org.apache.click.element.JsScript;
import org.apache.click.examples.page.BorderPage;
import org.apache.click.extras.control.TabbedForm;
import org.apache.click.util.Bindable;
import org.apache.click.util.ClickUtils;
import org.apache.commons.lang.StringUtils;
/**
* Demonstrate how to populate Select controls.
*/
public class PopulateOnSelect extends BorderPage {
private static final long serialVersionUID = 1L;
private static final String EASTERN_CAPE = "EC";
private static final String FREE_STATE = "FS";
private static final String GAUTENG_PROVINCE = "GP";
private static final String WESTERN_CAPE = "WC";
@Bindable protected TabbedForm form = new TabbedForm("form");
private Select state = new Select("state", true);
private Select city = new Select("city", true);
private Select suburb = new Select("suburb", true);
private Submit save = new Submit("save");
// Event Handlers ---------------------------------------------------------
@Override
public void onInit() {
super.onInit();
FieldSet fieldSet = new FieldSet("select");
form.addTabSheet(fieldSet);
// Set onchange attributes
state.setAttribute("onchange","handleChange('form_city', form);");
city.setAttribute("onchange","handleChange('form_suburb', form);");
suburb.setAttribute("onchange", "printValues();");
// set widths
state.setWidth("200px");
city.setWidth("200px");
suburb.setWidth("200px");
// add selects
fieldSet.add(state);
fieldSet.add(city);
fieldSet.add(suburb);
// build the Selects in the onInit phase
buildSelects();
form.add(save);
}
// Public Methods ---------------------------------------------------------
public void buildSelects() {
state.setDefaultOption(new Option("---"));
city.setDefaultOption(new Option("---"));
suburb.setDefaultOption(new Option("---"));
// Populate the States. Do this before binding requests
populateStateData();
// Bind the form field request values
ClickUtils.bind(form);
if (StringUtils.isEmpty(state.getValue())) {
// No state selected, exit early
return;
}
// If state is selected, proceed to populate city
populateCityData(state.getValue());
if (StringUtils.isEmpty(city.getValue())) {
// No city selected, exit early
return;
}
// If city is selected, proceed to populate suburbs
populateSuburbData(city.getValue());
}
@Override
public List<Element> getHeadElements() {
if (headElements == null) {
headElements = super.getHeadElements();
Map<String, Object> model = new HashMap<String, Object>();
model.put("stateId", state.getId());
model.put("cityId", city.getId());
model.put("suburbId", suburb.getId());
// populate-on-select.js is a Velocity template which is rendered directly
// from this Page
JsScript script = new JsScript("/form/dynamic/populate-on-select.js", model);
headElements.add(script);
}
return headElements;
}
// Private Methods --------------------------------------------------------
@SuppressWarnings("serial")
private void populateStateData() {
state.setDataProvider(new DataProvider() {
public List getData() {
List optionList = new ArrayList();
optionList.add(new Option(EASTERN_CAPE, "Eastern Cape"));
optionList.add(new Option(FREE_STATE, "Free State"));
optionList.add(new Option(GAUTENG_PROVINCE, "Gauteng Province"));
optionList.add(new Option(WESTERN_CAPE, "Western Cape"));
return optionList;
}
});
}
private void populateCityData(final String stateCode) {
city.setDataProvider(new DataProvider() {
public List getData() {
List optionList = new ArrayList();
if (EASTERN_CAPE.equals(stateCode)) {
optionList.add(new Option("Port Elizabeth"));
optionList.add(new Option("East London"));
} else if (FREE_STATE.equals(stateCode)) {
optionList.add(new Option("Bloemfontein"));
optionList.add(new Option("Welkom"));
} else if (GAUTENG_PROVINCE.equals(stateCode)) {
optionList.add(new Option("Johannesburg"));
optionList.add(new Option("Pretoria"));
} else if (WESTERN_CAPE.equals(stateCode)) {
optionList.add(new Option("Cape Town"));
optionList.add(new Option("George"));
}
return optionList;
}
});
}
private void populateSuburbData(final String cityCode) {
suburb.setDataProvider(new DataProvider() {
public List getData() {
List optionList = new ArrayList();
if (cityCode.equals("Port Elizabeth")) {
optionList.add(new Option("Humewood"));
optionList.add(new Option("Summerstrand"));
} else if (cityCode.equals("East London")) {
optionList.add(new Option("Beacon Bay"));
optionList.add(new Option("Cinta East"));
} else if (cityCode.equals("Bloemfontein")) {
optionList.add(new Option("Fichardpark"));
optionList.add(new Option("Wilgehof"));
} else if (cityCode.equals("Welkom")) {
optionList.add(new Option("Dagbreek"));
optionList.add(new Option("Eerstemyn"));
} else if (cityCode.equals("Johannesburg")) {
optionList.add(new Option("Rivonia"));
optionList.add(new Option("Sandton"));
} else if (cityCode.equals("Pretoria")) {
optionList.add(new Option("Garsfontein"));
optionList.add(new Option("Sunnyside"));
} else if (cityCode.equals("Cape Town")) {
optionList.add(new Option("Milnerton"));
optionList.add(new Option("Blaauwberg"));
} else if (cityCode.equals("George")) {
optionList.add(new Option("Panorama"));
optionList.add(new Option("Fernridge"));
}
return optionList;
}
});
}
}