/* * Smart GWT (GWT for SmartClient) * Copyright 2008 and beyond, Isomorphic Software, Inc. * * Smart GWT 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. Smart GWT 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. */ import java.util.HashMap; import java.util.LinkedHashMap; import java.util.Map; import com.smartgwt.client.data.Criteria; import com.smartgwt.client.data.DataSource; import com.smartgwt.client.types.ListGridFieldType; import com.smartgwt.client.widgets.Canvas; import com.smartgwt.client.widgets.IButton; import com.smartgwt.client.widgets.Label; import com.smartgwt.client.widgets.events.ClickEvent; import com.smartgwt.client.widgets.events.ClickHandler; import com.smartgwt.client.widgets.form.fields.FilterCriteriaFunction; import com.smartgwt.client.widgets.form.fields.SelectItem; import com.smartgwt.client.widgets.form.fields.events.ChangedEvent; import com.smartgwt.client.widgets.form.fields.events.ChangedHandler; import com.smartgwt.client.widgets.grid.EditorValueMapFunction; import com.smartgwt.client.widgets.grid.ListGrid; import com.smartgwt.client.widgets.grid.ListGridField; import com.smartgwt.client.widgets.layout.VLayout; import com.smartgwt.sample.showcase.client.data.EmployeeData; import com.smartgwt.sample.showcase.client.data.ItemSupplyXmlDS; import com.smartgwt.sample.showcase.client.data.SupplyCategoryXmlDS; import com.google.gwt.core.client.EntryPoint; public class GridDependentSelectsSample implements EntryPoint { public void onModuleLoad() { VLayout layout = new VLayout(15); Label localDataLabel = new Label("Local Data"); localDataLabel.setWidth("90%"); localDataLabel.setHeight(25); localDataLabel.setBaseStyle("exampleSeparator"); layout.addMember(localDataLabel); final ListGrid localDataGrid = new ListGrid(); localDataGrid.setWidth(500); localDataGrid.setHeight(200); localDataGrid.setCanEdit(true); localDataGrid.setData(EmployeeData.getRecords()); ListGridField employeeField = new ListGridField("employee", "Name"); employeeField.setCanEdit(false); ListGridField divisionField = new ListGridField("division", "Division"); SelectItem divisionSelectItem = new SelectItem(); divisionSelectItem.setValueMap("Marketing", "Sales", "Services"); divisionSelectItem.addChangedHandler(new ChangedHandler() { public void onChanged(ChangedEvent event) { //calling 'setValueMap()' will force the 'getEditorValueMap' method to be re-evaluated for the department field localDataGrid.setValueMap("department", new LinkedHashMap()); } }); divisionField.setEditorType(divisionSelectItem); ListGridField departmentField = new ListGridField("department", "Department"); final Map<String, String[]> departments = new HashMap<String, String[]>(); departments.put("Marketing", new String[]{"Advertising", "Community Relations"}); departments.put("Sales", new String[]{"Channed Sales", "Direct Sales"}); departments.put("Manufacturing", new String[]{"Design", "Development", "QA"}); departments.put("Services", new String[]{"Support", "Consulting"}); SelectItem departmentSelectItem = new SelectItem(); departmentSelectItem.setAddUnknownValues(false); departmentField.setEditorValueMapFunction(new EditorValueMapFunction() { public Map getEditorValueMap(Map values, ListGridField field, ListGrid grid) { String division = (String) values.get("division"); String[] divisions = departments.get(division); //convert divisions into ValueMap. In this case we simply create a Map with same key -> value since //stored value is the same as user displayable value Map<String, String> valueMap = new HashMap<String, String>(); for (int i = 0; i < divisions.length; i++) { String val = divisions[i]; valueMap.put(val, val); } return valueMap; } }); departmentField.setEditorType(departmentSelectItem); localDataGrid.setFields(employeeField, divisionField, departmentField); layout.addMember(localDataGrid); //remote dependent selects sample Label remoteDataLabel = new Label("Remote Data"); remoteDataLabel.setWidth("90%"); remoteDataLabel.setHeight(25); remoteDataLabel.setBaseStyle("exampleSeparator"); layout.addMember(remoteDataLabel); final ListGrid remoteDataGrid = new ListGrid(); remoteDataGrid.setWidth(500); remoteDataGrid.setHeight(200); remoteDataGrid.setCanEdit(true); ListGridField quantityField = new ListGridField("quantity", "Qty"); quantityField.setType(ListGridFieldType.INTEGER); quantityField.setWidth(30); ListGridField categoryField = new ListGridField("categoryName", "Category"); DataSource supplyCategoryDS = SupplyCategoryXmlDS.getInstance(); DataSource supplyItemDS = ItemSupplyXmlDS.getInstance(); SelectItem categorySelectItem = new SelectItem(); categorySelectItem.setOptionDataSource(supplyCategoryDS); categoryField.setEditorType(categorySelectItem); categoryField.addChangedHandler(new com.smartgwt.client.widgets.grid.events.ChangedHandler() { public void onChanged(com.smartgwt.client.widgets.grid.events.ChangedEvent event) { // setEditValue() explicitly to null, to override any existing value in the record that was from another category remoteDataGrid.setEditValue(event.getRowNum(), "itemName", (String)null); } }); ListGridField itemField = new ListGridField("itemName", "Item"); SelectItem itemEditor = new SelectItem(); itemEditor.setPickListFilterCriteriaFunction(new FilterCriteriaFunction() { public Criteria getCriteria() { String category = (String) remoteDataGrid.getEditedCell(remoteDataGrid.getEditRow(), "categoryName"); return new Criteria("category", category); } }); itemEditor.setOptionDataSource(supplyItemDS); itemField.setEditorType(itemEditor); remoteDataGrid.setFields(quantityField, categoryField, itemField); layout.addMember(remoteDataGrid); IButton newOrderButton = new IButton("Order New Item"); newOrderButton.setWidth(110); newOrderButton.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { Map defaultValues = new HashMap(); defaultValues.put("quantity", 1); remoteDataGrid.startEditingNew(defaultValues); } }); layout.addMember(newOrderButton); layout.draw(); } }