Source Code : Form Dependent Selects Sample (Smart GWT)

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Form Dependent Selects Sample (Smart GWT)

   
/*
 * SmartGWT (GWT for SmartClient)
 * Copyright 2008 and beyond, Isomorphic Software, Inc.
 *
 * SmartGWT is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.  SmartGWT is also
 * available under typical commercial license terms - see
 * http://smartclient.com/license
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 */

package com.smartgwt.sample.showcase.client;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.SelectItem;
import com.smartgwt.client.widgets.form.fields.events.ChangeEvent;
import com.smartgwt.client.widgets.form.fields.events.ChangeHandler;

public class Showcase implements EntryPoint {
  public void onModuleLoad() {
    RootPanel.get().add(getViewPanel());
  }

  public Canvas getViewPanel() {

    final DynamicForm form = new DynamicForm();
    form.setWidth(500);
    form.setNumCols(4);

    final Map<String, String[]> departments = new HashMap<String, String[]>();
    departments.put("Marketing", new String[] { "Advertising", "Community Relations" });
    departments.put("Sales", new String[] { "Channel Sales", "Direct Sales" });
    departments.put("Manufacturing", new String[] { "Design", "Development", "QA" });
    departments.put("Services", new String[] { "Support", "Consulting" });

    SelectItem divisionItem = new SelectItem();
    divisionItem.setName("division");
    divisionItem.setTitle("Division");
    divisionItem.setValueMap("Marketing", "Sales", "Manufacturing", "Services");
    divisionItem.addChangeHandler(new ChangeHandler() {
      public void onChange(ChangeEvent event) {
        String selectedItem = (String) event.getValue();
        form.getField("department").setValueMap(departments.get(selectedItem));
      }
    });

    SelectItem departmentItem = new SelectItem();
    departmentItem.setName("department");
    departmentItem.setTitle("Department");
    departmentItem.setAddUnknownValues(false);

    form.setItems(divisionItem, departmentItem);

    return form;

  }

}

   
    
    
  

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