Java tutorial
/* * Copyright (c) 2015. David Sowerby * * 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 uk.q3c.krail.core.view; import com.google.inject.Inject; import com.vaadin.ui.TextArea; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import uk.q3c.krail.core.view.component.ViewChangeBusMessage; import uk.q3c.util.StackTraceUtil; /** * @author David Sowerby 4 Aug 2013 */ public class DefaultErrorView extends ViewBase implements ErrorView { private static Logger log = LoggerFactory.getLogger(DefaultErrorView.class); private Throwable error; private TextArea textArea; private boolean viewBuilt = false; @Inject protected DefaultErrorView() { super(); } public TextArea getTextArea() { return textArea; } public Throwable getError() { return error; } @Override public void setError(Throwable error) { log.error(StackTraceUtil.getStackTrace(error)); this.error = error; } @Override public void doBuild(ViewChangeBusMessage busMessage) { textArea = new TextArea(); textArea.setSizeFull(); textArea.setReadOnly(false); textArea.setWordwrap(false); if (error != null) { String s = StackTraceUtil.getStackTrace(error); //add a couple of blank lines at the bootom to ensure visibility of the last line textArea.setValue(s + "\n\n"); } else { textArea.setValue("Error view has been called but no error has been set. This should not happen"); textArea.setReadOnly(true); } setRootComponent(textArea); } }