Tree view dropdown (Smart GWT) : Tree « GWT « Java

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Java » GWT » TreeScreenshots 
Tree view dropdown (Smart GWT)
Tree view dropdown (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.widgets.Canvas;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.PickTreeItem;
import com.smartgwt.client.widgets.tree.Tree;
import com.smartgwt.client.widgets.tree.TreeNode;

public class Showcase implements EntryPoint {

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

  private static final TreeNode departmentRoot = new DepertmentTreeNode("root",
      new DepertmentTreeNode("Marketing"new DepertmentTreeNode("Advertising"),
          new DepertmentTreeNode("Community Relations"))new DepertmentTreeNode("Sales",
          new DepertmentTreeNode("Channel Sales")new DepertmentTreeNode("Direct Sales")),
      new DepertmentTreeNode("Manufacturing"new DepertmentTreeNode("Design"),
          new DepertmentTreeNode("Development")new DepertmentTreeNode("QA")),
      new DepertmentTreeNode("Services"new DepertmentTreeNode("Support")new DepertmentTreeNode(
          "Consulting")));

  public Canvas getViewPanel() {

    final DynamicForm form new DynamicForm();
    form.setWidth(300);

    Tree tree = new Tree();
    tree.setRoot(departmentRoot);

    PickTreeItem departmentItem = new PickTreeItem();
    departmentItem.setTitle("Department");
    departmentItem.setValueField("name");
    departmentItem.setValueTree(tree);

    SupplyCategoryXmlDS dataSource = SupplyCategoryXmlDS.getInstance();

    PickTreeItem categoryItem = new PickTreeItem();
    categoryItem.setTitle("Category");

    categoryItem.setDataSource(dataSource);
    categoryItem.setEmptyMenuMessage("No Sub Categories");
    categoryItem.setCanSelectParentItems(true);
    // categoryItem.setLoadDataOnDemand(false);
    // dataSource.fetchData();

    form.setItems(departmentItem, categoryItem);

    return form;
  }

}
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"128true);
      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);

  }
}
class DepertmentTreeNode extends TreeNode {

  public DepertmentTreeNode(String name) {
    setName(name);
  }

  public DepertmentTreeNode(String name, DepertmentTreeNode... children) {
    setName(name);
    setChildren(children);
  }
}

   
    
    
  
SmartGWT.zip( 9,880 k)
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