Source Code : Menu Tree Binding Sample (Smart GWT)

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Menu Tree Binding 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 com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.data.DataSource;
import com.smartgwt.client.data.fields.DataSourceTextField;
import com.smartgwt.client.util.SC;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.menu.Menu;
import com.smartgwt.client.widgets.menu.MenuButton;
import com.smartgwt.client.widgets.menu.MenuItem;
import com.smartgwt.client.widgets.menu.events.ItemClickEvent;
import com.smartgwt.client.widgets.menu.events.ItemClickHandler;

public class Showcase implements EntryPoint {

  public void onModuleLoad() {
    RootPanel.get().add(getViewPanel());
  }
  public Canvas getViewPanel() {

    Canvas main = new Canvas();

    Menu mDepartment = new Menu();
    mDepartment.setCanSelectParentItems(true);
    mDepartment.setData(getLocalItemsAsArray());
    mDepartment.setWidth(130);

    mDepartment.addItemClickHandler(new ItemClickHandler() {
      public void onItemClick(ItemClickEvent event) {
        SC.say("You picked the "" + event.getItem().getTitle()
            + "" department.");
      }
    });

    MenuButton bDepartment = new MenuButton("Go to department", mDepartment);
    bDepartment.setWidth(130);

    main.addChild(bDepartment);

    Menu mCategory = new Menu();
    mCategory.setCanSelectParentItems(true);
    mCategory.setDataSource(SupplyCategoryXmlDS.getInstance());
    mCategory.setWidth(130);

    mCategory.addItemClickHandler(new ItemClickHandler() {
      public void onItemClick(ItemClickEvent event) {
        MenuItem item = event.getItem();
        SC.say("You picked the ""
            + item.getAttributeAsString("categoryName")
            + "" category.");
      }
    });

    MenuButton bCategory = new MenuButton("Go to category", mCategory);
    bCategory.setTop(30);
    bCategory.setWidth(140);

    main.addChild(bCategory);

    return main;
  }

  private MenuItem[] getLocalItemsAsArray() {

    MenuItem[] m = new MenuItem[4];

    m[0] = new MenuItem("Marketing");
    Menu menuMarketing = new Menu();
    menuMarketing.setData(new MenuItem("Advertising"), new MenuItem("Community Relations"));
    m[0].setSubmenu(menuMarketing);

    m[1] = new MenuItem("Sales");
    Menu menuSales = new Menu();
    menuSales.setData(new MenuItem("Direct Sales"),new MenuItem("Channel Sales"));
    m[1].setSubmenu(menuSales);

    m[2] = new MenuItem("Manufacturing");
    Menu menuManufacturing = new Menu();
    menuManufacturing.setData(new MenuItem("Design"), new MenuItem("Development"), new MenuItem("QA"));
    m[2].setSubmenu(menuManufacturing);

    m[3] = new MenuItem("Services");
    Menu menuServices = new Menu();
    menuServices.setData(new MenuItem("Support"), new MenuItem("Consulting"));
    m[3].setSubmenu(menuServices);

    return m;
  }
  
}


class SupplyCategoryXmlDS extends DataSource {

  private static SupplyCategoryXmlDS instance = null;

  public static SupplyCategoryXmlDS getInstance() {
      if (instance == null) {
          instance = new SupplyCategoryXmlDS("supplyCategoryDS");
      }
      return instance;
  }

  public SupplyCategoryXmlDS(String id) {

      setID(id);
      setRecordXPath("/List/supplyCategory");


      DataSourceTextField itemNameField = new DataSourceTextField("categoryName", "Item", 128, true);
      itemNameField.setPrimaryKey(true);

      DataSourceTextField parentField = new DataSourceTextField("parentID", null);
      parentField.setHidden(true);
      parentField.setRequired(true);
      parentField.setRootValue("root");
      parentField.setForeignKey("supplyCategoryDS.categoryName");


      setFields(itemNameField, parentField);

      setDataURL("ds/test_data/supplyCategory.data.xml");
      
      setClientOnly(true);

  }
}

   
    
    
  

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