A table displays badly when it has:
- only generated columns, and
- setHeight(null)
It displays only one line instead of many, in the example below.
The example below shows the problem.
To make it work better, just uncomment either lines:
// visibleCols = {“field1”, “col1”, “col2”, “col3”}; // With this line it works
// table.setHeight(“300px”); // This line makes the table work
package com.example.vaadintest;
import java.util.ArrayList;
import java.util.List;
import com.vaadin.Application;
import com.vaadin.data.util.BeanItemContainer;
import com.vaadin.ui.Component;
import com.vaadin.ui.Label;
import com.vaadin.ui.Table;
import com.vaadin.ui.Window;
import com.vaadin.ui.Table.ColumnGenerator;
public class VaadintestApplication extends Application {
@Override
public void init() {
Window mainWindow = new Window("Vaadintest Application");
setMainWindow(mainWindow);
Label label = new Label("Hello Vaadin user");
mainWindow.addComponent(label);
Table table = new Table();
table.setPageLength(0);
table.setHeight(null);
// table.setHeight("300px"); // This line makes the table work
List<Pojo> pojoList = new ArrayList<Pojo>();
pojoList.add(new Pojo("aaa", "bbb", "ccc"));
pojoList.add(new Pojo("aaa", "bbb", "ccc"));
pojoList.add(new Pojo("aaa", "bbb", "ccc"));
pojoList.add(new Pojo("aaa", "bbb", "ccc"));
pojoList.add(new Pojo("aaa", "bbb", "ccc"));
pojoList.add(new Pojo("aaa", "bbb", "ccc"));
pojoList.add(new Pojo("aaa", "bbb", "ccc"));
table.addGeneratedColumn("col1", new MyColumnGenerator());
table.addGeneratedColumn("col2", new MyColumnGenerator());
table.addGeneratedColumn("col3", new MyColumnGenerator());
table.setContainerDataSource( new BeanItemContainer<Pojo>(pojoList) );
String[] visibleCols = { "col1", "col2", "col3"};
// visibleCols = {"field1", "col1", "col2", "col3"}; // With this line it works
table.setVisibleColumns(visibleCols); // Set the column order.
mainWindow.addComponent(table);
}
class MyColumnGenerator implements ColumnGenerator {
public Component generateCell(Table source, Object itemId, Object columnId) {
return new Label("generated");
}
}
public class Pojo {
String field1;
String field2;
String field3;
Pojo (String f1, String f2, String f3) {
field1 = f1;
field2 = f2;
field3 = f3;
}
public String getField1() {
return field1;
}
public void setField1(String field1) {
this.field1 = field1;
}
public String getField2() {
return field2;
}
public void setField2(String field2) {
this.field2 = field2;
}
public String getField3() {
return field3;
}
public void setField3(String field3) {
this.field3 = field3;
}
}
}
