@Override
public void setContentView(Widget widget) {
if (content.getElement().getChildCount() > 0) {
for (int i = 0; i < content.getElement().getChildCount(); i++) {
content.getElement().getChild(i).removeFromParent();
}
}
content.add(widget);
}
@Override
public void setNavigationView(Widget widget) {
navigation.add(widget);
}
@Override
public void setHeaderView(Widget widget) {
header.add(widget);
}