burrito.client.widgets.draganddrop.VerticalPanelWithSpacer.java Source code

Introduction

Here is the source code for burrito.client.widgets.draganddrop.VerticalPanelWithSpacer.java

Source

/**
 * Copyright 2011 Henric Persson (henric.persson@gmail.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package burrito.client.widgets.draganddrop;

import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

public class VerticalPanelWithSpacer extends VerticalPanel {

    private static final String CSS_CLASS = "vertical-spacer";

    public VerticalPanelWithSpacer() {
        Label spacer = new Label("");
        spacer.setStyleName(CSS_CLASS);
        super.add(spacer);
    }

    @Override
    public void add(Widget w) {
        super.insert(w, getWidgetCount() - 1);
    }

    @Override
    public void insert(Widget w, int beforeIndex) {
        if (beforeIndex == getWidgetCount()) {
            beforeIndex--;
        }
        super.insert(w, beforeIndex);
    }
}