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Tree Editing 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.Criteria; import com.smartgwt.client.data.DataSource; import com.smartgwt.client.data.fields.DataSourceFloatField; import com.smartgwt.client.data.fields.DataSourceIntegerField; import com.smartgwt.client.data.fields.DataSourceTextField; import com.smartgwt.client.widgets.Canvas; import com.smartgwt.client.widgets.form.SearchForm; import com.smartgwt.client.widgets.form.fields.PickTreeItem; import com.smartgwt.client.widgets.form.fields.events.ChangedEvent; import com.smartgwt.client.widgets.form.fields.events.ChangedHandler; import com.smartgwt.client.widgets.grid.ListGrid; import com.smartgwt.client.widgets.layout.VLayout; import com.smartgwt.client.widgets.tree.TreeGrid; import com.smartgwt.client.widgets.tree.TreeGridField; public class Showcase implements EntryPoint {   public void onModuleLoad() {     RootPanel.get().add(getViewPanel());   }   public Canvas getViewPanel() {     TreeGridField fieldName = new TreeGridField("Name", 150);     TreeGridField fieldJob = new TreeGridField("Job", 150);     TreeGridField fieldSalary = new TreeGridField("Salary");     TreeGrid employeeTree = new TreeGrid();     employeeTree.setWidth(500);     employeeTree.setHeight(250);     employeeTree.setDataSource(EmployeeXmlDS.getInstance());     employeeTree.setNodeIcon("icons/16/person.png");     employeeTree.setFolderIcon("icons/16/person.png");     employeeTree.setAutoFetchData(true);     employeeTree.setLoadDataOnDemand(false);     employeeTree.setCanEdit(true);     employeeTree.setCanReorderRecords(true);     employeeTree.setCanAcceptDroppedRecords(true);     employeeTree.setShowDropIcons(false);     employeeTree.setShowOpenIcons(false);     employeeTree.setClosedIconSuffix("");     employeeTree.setFields(fieldName, fieldJob, fieldSalary);     final ListGrid employeeGrid = new ListGrid();     employeeGrid.setWidth(500);     employeeGrid.setHeight(250);     employeeGrid.setEmptyMessage("Select an Employee from the PickTree Item above.");     employeeGrid.setDataSource(EmployeeXmlDS.getInstance());     employeeGrid.setCanEdit(true);     employeeGrid.setFields(new TreeGridField("Name", 150), new TreeGridField("Job", 150),         new TreeGridField("Salary"));     PickTreeItem searchPickTree = new PickTreeItem();     searchPickTree.setCanSelectParentItems(true);     searchPickTree.setShowTitle(false);     searchPickTree.setDataSource(EmployeeXmlDS.getInstance());     searchPickTree.setDisplayField("Name");     searchPickTree.setValueField("EmployeeId");     searchPickTree.addChangedHandler(new ChangedHandler() {       public void onChanged(ChangedEvent event) {         Criteria c = new Criteria();         c.addCriteria("ReportsTo", (Integer) event.getValue());         employeeGrid.fetchData(c);       }     });     SearchForm searchForm = new SearchForm();     searchForm.setWidth(200);     searchForm.setHeight(30);     searchForm.setFields(searchPickTree);     VLayout mainView = new VLayout(10);     mainView.setHeight100();     mainView.setWidth100();     mainView.addMember(searchForm);     mainView.addMember(employeeGrid);     mainView.addMember(employeeTree);     return mainView;   } } class EmployeeXmlDS extends DataSource {   private static EmployeeXmlDS instance = null;   public static EmployeeXmlDS getInstance() {     if (instance == null) {       instance = new EmployeeXmlDS("employeesDS");     }     return instance;   }   public EmployeeXmlDS(String id) {     setID(id);     setTitleField("Name");     setRecordXPath("/List/employee");     DataSourceTextField nameField = new DataSourceTextField("Name", "Name", 128);     DataSourceIntegerField employeeIdField = new DataSourceIntegerField("EmployeeId", "Employee ID");     employeeIdField.setPrimaryKey(true);     employeeIdField.setRequired(true);     DataSourceIntegerField reportsToField = new DataSourceIntegerField("ReportsTo", "Manager");     reportsToField.setRequired(true);     reportsToField.setForeignKey(id + ".EmployeeId");     reportsToField.setRootValue("1");     DataSourceTextField jobField = new DataSourceTextField("Job", "Title", 128);     DataSourceTextField emailField = new DataSourceTextField("Email", "Email", 128);     DataSourceTextField statusField = new DataSourceTextField("EmployeeStatus", "Status", 40);     DataSourceFloatField salaryField = new DataSourceFloatField("Salary", "Salary");     DataSourceTextField orgField = new DataSourceTextField("OrgUnit", "Org Unit", 128);     DataSourceTextField genderField = new DataSourceTextField("Gender", "Gender", 7);     genderField.setValueMap("male", "female");     DataSourceTextField maritalStatusField = new DataSourceTextField("MaritalStatus",         "Marital Status", 10);     setFields(nameField, employeeIdField, reportsToField, jobField, emailField, statusField,         salaryField, orgField, genderField, maritalStatusField);     setDataURL("ds/test_data/employees.data.xml");     setClientOnly(true);   } }                  SmartGWT.zip( 9,880 k)