I've got some problems with CellTable in GWT.
What I want to do:
I've got CellTable and I want to add header with an image and add action to
it. But it doesn't work in my code.
My code (all):
import java.util.Arrays;
import java.util.List;
import com.google.gwt.cell.client.Cell;
import com.google.gwt.cell.client.ClickableTextCell;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.cellview.client.CellTable;
import com.google.gwt.user.cellview.client.Header;
import com.google.gwt.user.cellview.client.TextColumn;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.VerticalPanel;`
public class HelloGWT implements EntryPoint {
public void onModuleLoad() {
RootPanel.get().add(new MyTable());
}
}
class Contact {
public Contact(String name, int number) {
this.number = number;
this.name = name;
}
public String name;
public int number;
}
class MyTable extends VerticalPanel {
public List<Contact> list = Arrays.asList(new Contact("contact_1",
1),
new Contact("contact_2", 2), new Contact("contact_3", 3)
);
public MyTable() {
CellTable<Contact> table = new CellTable<Contact>();
table.addColumn(new MyColumn(), new MyHeader(new
ClickableTextCell(), "MyHeader!"));
table.setRowData(0, list);
this.add(table);
}
}
class MyColumn extends TextColumn<Contact> {
public MyColumn() {
}
@Override
public String getValue(Contact object) {
// TODO Auto-generated method stub
return object.name;
}
}
class MyHeader extends Header<String> {
private String columnName;
private Image image = new
Image("http://www.google.com/mobile/images/mgc3/google-mobile-app48.png";);
public MyHeader(Cell<String> cell, String columnName) {
super(cell);
// TODO Auto-generated constructor stub
this.columnName = columnName;
image.addClickHandler(new ClickHandler()
{
@Override
public void onClick(ClickEvent event) {
System.out.println("Click!");
}
}
);
}
@Override
public String getValue() {
// TODO Auto-generated method stub
return columnName;
}
@Override
public void render(Cell.Context context, SafeHtmlBuilder sb) {
StringBuilder s = new StringBuilder();
s.append(columnName);
image.setSize("20px", "20px");
s.append(image);
sb.append(SafeHtmlUtils.fromSafeConstant(s.toString()));
}
}
Thanks for any ideas...
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![http://www.google.com/mobile/images/mgc3/google-mobile-app48.png"](https://www.google.com/mobile/images/mgc3/google-mobile-app48.png"){kind=link}