Grid data binding (Ext GWT)
/*
* Ext GWT - Ext for GWT
* Copyright(c) 2007-2009, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.google.gwt.sample.hello.client;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.extjs.gxt.ui.client.Style.HorizontalAlignment;
import com.extjs.gxt.ui.client.Style.Orientation;
import com.extjs.gxt.ui.client.Style.SelectionMode;
import com.extjs.gxt.ui.client.binding.FormBinding;
import com.extjs.gxt.ui.client.data.BaseModel;
import com.extjs.gxt.ui.client.data.ModelData;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.Listener;
import com.extjs.gxt.ui.client.event.SelectionChangedEvent;
import com.extjs.gxt.ui.client.store.ListStore;
import com.extjs.gxt.ui.client.widget.ContentPanel;
import com.extjs.gxt.ui.client.widget.LayoutContainer;
import com.extjs.gxt.ui.client.widget.form.DateField;
import com.extjs.gxt.ui.client.widget.form.FormPanel;
import com.extjs.gxt.ui.client.widget.form.NumberField;
import com.extjs.gxt.ui.client.widget.form.TextField;
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.RowData;
import com.extjs.gxt.ui.client.widget.layout.RowLayout;
import com.extjs.gxt.ui.client.widget.table.NumberCellRenderer;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.i18n.client.NumberFormat;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.RootPanel;
public class Hello implements EntryPoint {
public void onModuleLoad() {
RootPanel.get().add(new GridBindingExample());
}
}
class GridBindingExample extends LayoutContainer {
private FormBinding formBindings;
@Override
protected void onRender(Element parent, int index) {
super.onRender(parent, index);
setStyleAttribute("margin", "10px");
ContentPanel cp = new ContentPanel();
cp.setHeading("Form Bindings");
cp.setFrame(true);
cp.setSize(800, 400);
cp.setLayout(new RowLayout(Orientation.HORIZONTAL));
Grid<Stock> grid = createGrid();
grid.getSelectionModel().setSelectionMode(SelectionMode.SINGLE);
grid.getSelectionModel().addListener(Events.SelectionChange,
new Listener<SelectionChangedEvent<Stock>>() {
public void handleEvent(SelectionChangedEvent<Stock> be) {
if (be.getSelection().size() > 0) {
formBindings.bind((ModelData) be.getSelection().get(0));
} else {
formBindings.unbind();
}
}
});
cp.add(grid, new RowData(.6, 1));
FormPanel panel = createForm();
formBindings = new FormBinding(panel, true);
cp.add(panel, new RowData(.4, 1));
add(cp);
}
private FormPanel createForm() {
FormPanel panel = new FormPanel();
panel.setHeaderVisible(false);
TextField<String> name = new TextField<String>();
name.setName("name");
name.setFieldLabel("Name");
panel.add(name);
TextField<String> symbol = new TextField<String>();
symbol.setName("symbol");
symbol.setFieldLabel("Symbol");
panel.add(symbol);
NumberField open = new NumberField();
open.setName("last");
open.setFieldLabel("Last");
panel.add(open);
NumberField change = new NumberField();
change.setName("change");
change.setFieldLabel("Change");
change.setFormat(NumberFormat.getDecimalFormat());
panel.add(change);
DateField last = new DateField();
last.setName("date");
last.setFieldLabel("Updated");
panel.add(last);
return panel;
}
private Grid<Stock> createGrid() {
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> store, 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(75);
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", 90);
column.setAlignment(HorizontalAlignment.RIGHT);
column.setRenderer(change);
configs.add(column);
column = new ColumnConfig("date", "Last Updated", 90);
column.setAlignment(HorizontalAlignment.RIGHT);
column.setDateTimeFormat(DateTimeFormat.getShortDateFormat());
configs.add(column);
ListStore<Stock> store = new ListStore<Stock>();
store.setMonitorChanges(true);
store.add(getStocks());
ColumnModel cm = new ColumnModel(configs);
Grid<Stock> grid = new Grid<Stock>(store, cm);
grid.getView().setEmptyText("sdfd");
grid.setBorders(false);
grid.setAutoExpandColumn("name");
grid.setBorders(true);
return grid;
}
public static List<Stock> getStocks() {
List<Stock> stocks = new ArrayList<Stock>();
stocks.add(new Stock("Apple Inc.", "AAPL", 125.64, 123.43));
stocks.add(new Stock("Cisco Systems, Inc.", "CSCO", 25.84, 26.3));
stocks.add(new Stock("Google Inc.", "GOOG", 516.2, 512.6));
stocks.add(new Stock("Intel Corporation", "INTC", 21.36, 21.53));
stocks.add(new Stock("Level 3 Communications, Inc.", "LVLT", 5.55, 5.54));
stocks.add(new Stock("Microsoft Corporation", "MSFT", 29.56, 29.72));
stocks.add(new Stock("Nokia Corporation (ADR)", "NOK", 27.83, 27.93));
stocks.add(new Stock("Oracle Corporation", "ORCL", 18.73, 18.98));
stocks.add(new Stock("Starbucks Corporation", "SBUX", 27.33, 27.36));
stocks.add(new Stock("Yahoo! Inc.", "YHOO", 26.97, 27.29));
stocks.add(new Stock("Applied Materials, Inc.", "AMAT", 18.4, 18.66));
stocks.add(new Stock("Comcast Corporation", "CMCSA", 25.9, 26.4));
stocks.add(new Stock("Sirius Satellite", "SIRI", 2.77, 2.74));
stocks.add(new Stock("Tellabs, Inc.", "TLAB", 10.64, 10.75));
stocks.add(new Stock("eBay Inc.", "EBAY", 30.43, 31.21));
stocks.add(new Stock("Broadcom Corporation", "BRCM", 30.88, 30.48));
stocks.add(new Stock("CMGI Inc.", "CMGI", 2.14, 2.13));
stocks.add(new Stock("Amgen, Inc.", "AMGN", 56.22, 57.02));
stocks.add(new Stock("Limelight Networks", "LLNW", 23, 22.11));
stocks.add(new Stock("Amazon.com, Inc.", "AMZN", 72.47, 72.23));
stocks.add(new Stock("E TRADE Financial Corporation", "ETFC", 24.32, 24.58));
stocks.add(new Stock("AVANIR Pharmaceuticals", "AVNR", 3.7, 3.52));
stocks.add(new Stock("Gemstar-TV Guide, Inc.", "GMST", 4.41, 4.55));
stocks.add(new Stock("Akamai Technologies, Inc.", "AKAM", 43.08, 45.32));
stocks.add(new Stock("Motorola, Inc.", "MOT", 17.74, 17.69));
stocks.add(new Stock("Advanced Micro Devices, Inc.", "AMD", 13.77, 13.98));
stocks.add(new Stock("General Electric Company", "GE", 36.8, 36.91));
stocks.add(new Stock("Texas Instruments Incorporated", "TXN", 35.02, 35.7));
stocks.add(new Stock("Qwest Communications", "Q", 9.9, 10.03));
stocks.add(new Stock("Tyco International Ltd.", "TYC", 33.48, 33.26));
stocks.add(new Stock("Pfizer Inc.", "PFE", 26.21, 26.19));
stocks.add(new Stock("Time Warner Inc.", "TWX", 20.3, 20.45));
stocks.add(new Stock("Sprint Nextel Corporation", "S", 21.85, 21.76));
stocks.add(new Stock("Bank of America Corporation", "BAC", 49.92, 49.73));
stocks.add(new Stock("Taiwan Semiconductor", "TSM", 10.4, 10.52));
stocks.add(new Stock("AT&T Inc.", "T", 39.7, 39.66));
stocks.add(new Stock("United States Steel Corporation", "X", 115.81, 114.62));
stocks.add(new Stock("Exxon Mobil Corporation", "XOM", 81.77, 81.86));
stocks.add(new Stock("Valero Energy Corporation", "VLO", 72.46, 72.6));
stocks.add(new Stock("Micron Technology, Inc.", "MU", 12.02, 12.27));
stocks.add(new Stock("Verizon Communications Inc.", "VZ", 42.5, 42.61));
stocks.add(new Stock("Avaya Inc.", "AV", 16.96, 16.96));
stocks.add(new Stock("The Home Depot, Inc.", "HD", 37.66, 37.79));
stocks.add(new Stock("First Data Corporation", "FDC", 32.7, 32.65));
return stocks;
}
}
class Stock extends BaseModel {
public Stock() {
}
public Stock(String name, String symbol, double open, double last) {
set("name", name);
set("symbol", symbol);
set("open", open);
set("last", last);
set("date", new Date());
set("change", last - open);
}
public Stock(String name, double open, double change, double pctChange, Date date, String industry) {
set("name", name);
set("open", open);
set("change", change);
set("percentChange", pctChange);
set("date", date);
set("industry", industry);
}
public String getIndustry() {
return get("industry");
}
public void setIndustry(String industry) {
set("industry", industry);
}
public Date getLastTrans() {
return (Date) get("date");
}
public String getName() {
return (String) get("name");
}
public String getSymbol() {
return (String) get("symbol");
}
public double getOpen() {
Double open = (Double) get("open");
return open.doubleValue();
}
public double getLast() {
Double open = (Double) get("last");
return open.doubleValue();
}
public double getChange() {
return getLast() - getOpen();
}
public double getPercentChange() {
return getChange() / getOpen();
}
public String toString() {
return getName();
}
}
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