How to add TabItems to a TabPanel from an other class?

[msauter]

I have the following class which contains a TabPanel:


public class MyTabPanel extends Composite {
private TabPanel tabPanel = new TabPanel();

public MyTabPanel() {

initComponent(tabPanel);

....
}

public void addTabItem(TabItem item) {
tabPanel.add(item);
tabPanel.setSelection(item);
}
}
Now i want to add from an other widget a TabItem to the TabPanel. I use a Button like this:



public class MenuWidget extends ContentPanel {
....
Button addNewTab = new Button("Add Tab");
SelectionListener<ButtonEvent> sel;
sel = new SelectionListener<ButtonEvent>() {
@override
public void componentSelected(ButtonEvent ce) {

// Here should be called MyTabPanel.add(item)
// but how?
}
};
..
Any idea how to create a reference from MenuWidget to MyTabPanel ?