Java tutorial
/* * Copyright (C) 2011 University of Washington * * 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 org.opendatakit.aggregate.client.widgets; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.user.client.ui.CheckBox; public class AggregateCheckBox extends CheckBox implements ValueChangeHandler<Boolean> { private final AggregateBaseHandlers handlers; public AggregateCheckBox(String tooltipText) { this(null, false, tooltipText, null); } public AggregateCheckBox(String label, String tooltipText) { this(label, false, tooltipText, null); } public AggregateCheckBox(String label, boolean labelIsHTML, String tooltipText, String helpBalloonText) { super(); if (label != null) { if (labelIsHTML) { setHTML(label); } else { setText(label); } } addValueChangeHandler(this); handlers = new AggregateBaseHandlers(this, tooltipText, helpBalloonText); addMouseOverHandler(handlers); addMouseOutHandler(handlers); } @Override public void onValueChange(ValueChangeEvent<Boolean> event) { handlers.userAction(); } }