/* * 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 com.google.gwt.i18n.client.NumberFormat; import com.smartgwt.client.types.Alignment; import com.smartgwt.client.types.GroupStartOpen; import com.smartgwt.client.types.ListGridFieldType; import com.smartgwt.client.widgets.Canvas; import com.smartgwt.client.widgets.grid.*; import com.smartgwt.sample.showcase.client.data.CountryXmlDS; import java.util.Date; import com.google.gwt.core.client.EntryPoint; public class GridCustomGroupingSample implements EntryPoint { public void onModuleLoad() { CountryXmlDS dataSource = CountryXmlDS.getInstance(); final ListGrid countryGrid = new ListGrid(); countryGrid.setCanEdit(true); countryGrid.setWidth(500); countryGrid.setHeight(224); countryGrid.setShowAllRecords(true); countryGrid.setCellHeight(22); countryGrid.setDataSource(dataSource); countryGrid.setGroupStartOpen(GroupStartOpen.ALL); countryGrid.setGroupByField("population"); countryGrid.setAutoFetchData(true); ListGridField nameField = new ListGridField("countryName"); ListGridField continentField = new ListGridField("continent"); ListGridField independenceField = new ListGridField("independence"); independenceField.setGroupValueFunction(new GroupValueFunction() { public Object getGroupValue(Object value, ListGridRecord record, ListGridField field, String fieldName, ListGrid grid) { Date independence = (Date) value; if(independence == null) { return "Ancient"; } else if (independence.getYear() < 10) { //if year < 1910 return "Pre-Industrial"; } else { return "Post-Industrial"; } } }); final int groupSmall = 1; final int groupMed = 2; final int groupLarge = 3; ListGridField populationField = new ListGridField("population"); populationField.setType(ListGridFieldType.INTEGER); populationField.setCellFormatter(new CellFormatter() { public String format(Object value, ListGridRecord record, int rowNum, int colNum) { if(value == null) return null; try { NumberFormat nf = NumberFormat.getFormat("0,000"); return nf.format(((Number) value).longValue()); } catch (Exception e) { return value.toString(); } } }); populationField.setGroupValueFunction(new GroupValueFunction() { public Object getGroupValue(Object value, ListGridRecord record, ListGridField field, String fieldName, ListGrid grid) { int population = (Integer) value; if(population < 100000000) { return groupSmall; } else if (population < 1000000000) { return groupMed; } else { return groupLarge; } } }); populationField.setGroupTitleRenderer(new GroupTitleRenderer() { public String getGroupTitle(Object groupValue, GroupNode groupNode, ListGridField field, String fieldName, ListGrid grid) { final int groupType = (Integer) groupValue; String baseTitle =""; switch (groupType) { case groupSmall: baseTitle = "Population less than 100 million"; break; case groupMed: baseTitle = "Population between 100 million-1 billion"; break; case groupLarge: baseTitle = "Population over 1 billion"; break; } baseTitle += " (" + groupNode.getGroupMembers().length + " members)"; return baseTitle; } }); ListGridField countryCodeField = new ListGridField("countryCode", "Flag", 40); countryCodeField.setAlign(Alignment.CENTER); countryCodeField.setType(ListGridFieldType.IMAGE); countryCodeField.setImageURLPrefix("flags/16/"); countryCodeField.setImageURLSuffix(".png"); countryCodeField.setCanEdit(false); countryGrid.setFields(nameField, continentField, independenceField, populationField, countryCodeField); countryGrid.draw(); } }