Java tutorial
/* * Copyright 2000-2018 Vaadin Ltd. * * 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 com.vaadin.client.ui; import com.google.gwt.user.client.Event; import com.google.gwt.user.client.ui.HTML; import com.vaadin.client.Util; import com.vaadin.client.VTooltip; public class VLabel extends HTML { public static final String CLASSNAME = "v-label"; private static final String CLASSNAME_UNDEFINED_WIDTH = "v-label-undef-w"; public VLabel() { super(); setStyleName(CLASSNAME); sinkEvents(VTooltip.TOOLTIP_EVENTS); } public VLabel(String text) { super(text); setStyleName(CLASSNAME); } @Override public void onBrowserEvent(Event event) { super.onBrowserEvent(event); if (event.getTypeInt() == Event.ONLOAD) { Util.notifyParentOfSizeChange(this, true); event.stopPropagation(); return; } } @Override public void setWidth(String width) { super.setWidth(width); if (width == null || width.isEmpty()) { setStyleName(getElement(), CLASSNAME_UNDEFINED_WIDTH, true); } else { setStyleName(getElement(), CLASSNAME_UNDEFINED_WIDTH, false); } } }