WidgetWithUiChild.java

package com.googlecode.gwt.test.uibinder;

import com.google.gwt.uibinder.client.UiChild;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;

import java.util.ArrayList;
import java.util.List;

public class WidgetWithUiChild extends Composite {

    private final List<Widget> customWidgets;
    private final List<Label> labels;

    public WidgetWithUiChild() {
        initWidget(new FlowPanel());
        labels = new ArrayList<Label>();
        customWidgets = new ArrayList<Widget>();
    }

    public int customWidgetCount() {
        return customWidgets.size();
    }

    public Widget getCustomChild(int index) {
        return customWidgets.get(index);
    }

    public Label getLabel(int index) {
        FlowPanel flowPanel = (FlowPanel) this.getWidget();
        return (Label) flowPanel.getWidget(index);
    }

    public int labelCount() {
        return labels.size();
    }

    @UiChild
    void addMyUiLabel(Label l) {
        FlowPanel flowPanel = (FlowPanel) this.getWidget();
        flowPanel.add(l);
        labels.add(l);
    }

    @UiChild(tagname = "customChild", limit = 1)
    void uiCustomChild(Widget w) {
        FlowPanel flowPanel = (FlowPanel) this.getWidget();
        flowPanel.add(w);
        customWidgets.add(w);
    }

}