Java tutorial
/* * Ext GWT 2.2.4 - Ext for GWT * Copyright(c) 2007-2010, Ext JS, LLC. * licensing@extjs.com * * http://extjs.com/license */ package com.extjs.gxt.samples.client.examples.grid; import java.util.ArrayList; import java.util.List; import com.extjs.gxt.samples.resources.client.Resources; import com.extjs.gxt.samples.resources.client.TestData; import com.extjs.gxt.samples.resources.client.model.Stock; import com.extjs.gxt.ui.client.Style.HorizontalAlignment; import com.extjs.gxt.ui.client.event.ButtonEvent; import com.extjs.gxt.ui.client.event.Events; import com.extjs.gxt.ui.client.event.GridEvent; import com.extjs.gxt.ui.client.event.Listener; import com.extjs.gxt.ui.client.event.SelectionListener; import com.extjs.gxt.ui.client.store.ListStore; import com.extjs.gxt.ui.client.widget.BoxComponent; import com.extjs.gxt.ui.client.widget.ContentPanel; import com.extjs.gxt.ui.client.widget.Info; import com.extjs.gxt.ui.client.widget.LayoutContainer; import com.extjs.gxt.ui.client.widget.button.Button; import com.extjs.gxt.ui.client.widget.grid.ColumnConfig; import com.extjs.gxt.ui.client.widget.grid.ColumnData; import com.extjs.gxt.ui.client.widget.grid.ColumnModel; import com.extjs.gxt.ui.client.widget.grid.Grid; import com.extjs.gxt.ui.client.widget.grid.GridCellRenderer; import com.extjs.gxt.ui.client.widget.layout.FitLayout; import com.extjs.gxt.ui.client.widget.layout.FlowLayout; import com.extjs.gxt.ui.client.widget.table.NumberCellRenderer; import com.google.gwt.i18n.client.DateTimeFormat; import com.google.gwt.i18n.client.NumberFormat; import com.google.gwt.user.client.Element; public class WidgetRenderingExample extends LayoutContainer { @Override protected void onRender(Element parent, int index) { super.onRender(parent, index); setLayout(new FlowLayout(10)); GridCellRenderer<Stock> buttonRenderer = new GridCellRenderer<Stock>() { private boolean init; public Object render(final Stock model, String property, ColumnData config, final int rowIndex, final int colIndex, ListStore<Stock> store, Grid<Stock> grid) { if (!init) { init = true; grid.addListener(Events.ColumnResize, new Listener<GridEvent<Stock>>() { public void handleEvent(GridEvent<Stock> be) { for (int i = 0; i < be.getGrid().getStore().getCount(); i++) { if (be.getGrid().getView().getWidget(i, be.getColIndex()) != null && be.getGrid() .getView().getWidget(i, be.getColIndex()) instanceof BoxComponent) { ((BoxComponent) be.getGrid().getView().getWidget(i, be.getColIndex())) .setWidth(be.getWidth() - 10); } } } }); } Button b = new Button((String) model.get(property), new SelectionListener<ButtonEvent>() { @Override public void componentSelected(ButtonEvent ce) { Info.display(model.getName(), "<ul><li>" + model.getSymbol() + "</li></ul>"); } }); b.setWidth(grid.getColumnModel().getColumnWidth(colIndex) - 10); b.setToolTip("Click for more information"); return b; } }; final NumberFormat currency = NumberFormat.getCurrencyFormat(); final NumberFormat number = NumberFormat.getFormat("0.00"); final NumberCellRenderer<Grid<Stock>> numberRenderer = new NumberCellRenderer<Grid<Stock>>(currency); GridCellRenderer<Stock> change = new GridCellRenderer<Stock>() { public String render(Stock model, String property, ColumnData config, int rowIndex, int colIndex, ListStore<Stock> store, Grid<Stock> grid) { double val = (Double) model.get(property); String style = val < 0 ? "red" : "green"; return "<span style='color:" + style + "'>" + number.format(val) + "</span>"; } }; GridCellRenderer<Stock> gridNumber = new GridCellRenderer<Stock>() { public String render(Stock model, String property, ColumnData config, int rowIndex, int colIndex, ListStore<Stock> stor, Grid<Stock> grid) { return numberRenderer.render(null, property, model.get(property)); } }; List<ColumnConfig> configs = new ArrayList<ColumnConfig>(); ColumnConfig column = new ColumnConfig(); column.setId("name"); column.setHeader("Company"); column.setWidth(200); configs.add(column); column = new ColumnConfig(); column.setId("symbol"); column.setHeader("Symbol"); column.setWidth(100); column.setRenderer(buttonRenderer); configs.add(column); column = new ColumnConfig(); column.setId("last"); column.setHeader("Last"); column.setAlignment(HorizontalAlignment.RIGHT); column.setWidth(75); column.setRenderer(gridNumber); configs.add(column); column = new ColumnConfig("change", "Change", 100); column.setAlignment(HorizontalAlignment.RIGHT); column.setRenderer(change); configs.add(column); column = new ColumnConfig("date", "Last Updated", 100); column.setAlignment(HorizontalAlignment.RIGHT); column.setDateTimeFormat(DateTimeFormat.getFormat("MM/dd/yyyy")); configs.add(column); final ListStore<Stock> store = new ListStore<Stock>(); store.add(TestData.getStocks()); ColumnModel cm = new ColumnModel(configs); ContentPanel cp = new ContentPanel(); cp.setBodyBorder(false); cp.setIcon(Resources.ICONS.table()); cp.setHeading("Widget Renderer Grid"); cp.setButtonAlign(HorizontalAlignment.CENTER); cp.setLayout(new FitLayout()); cp.setSize(600, 300); Grid<Stock> grid = new Grid<Stock>(store, cm); grid.setStyleAttribute("borderTop", "none"); grid.setAutoExpandColumn("name"); grid.setBorders(true); cp.add(grid); add(cp); } }