001/* 002 * This library is part of OpenCms - 003 * the Open Source Content Management System 004 * 005 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) 006 * 007 * This library is free software; you can redistribute it and/or 008 * modify it under the terms of the GNU Lesser General Public 009 * License as published by the Free Software Foundation; either 010 * version 2.1 of the License, or (at your option) any later version. 011 * 012 * This library is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * For further information about Alkacon Software, please see the 018 * company website: http://www.alkacon.com 019 * 020 * For further information about OpenCms, please see the 021 * project website: http://www.opencms.org 022 * 023 * You should have received a copy of the GNU Lesser General Public 024 * License along with this library; if not, write to the Free Software 025 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 026 */ 027 028package org.opencms.ui; 029 030import org.opencms.main.CmsLog; 031import org.opencms.ui.apps.CmsAppWorkplaceUi; 032 033import java.net.SocketException; 034 035import org.apache.commons.logging.Log; 036 037import com.vaadin.server.DefaultErrorHandler; 038import com.vaadin.server.ErrorEvent; 039 040/** 041 * Error handler for uncaught Vaadin exceptions.<p> 042 */ 043public class CmsVaadinErrorHandler extends DefaultErrorHandler { 044 045 /** The logger instance for this class. */ 046 private static final Log LOG = CmsLog.getLog(CmsVaadinErrorHandler.class); 047 048 /** Serial version id. */ 049 private static final long serialVersionUID = 1L; 050 051 /** The workplace UI instance. */ 052 private CmsAppWorkplaceUi m_ui; 053 054 /** 055 * Constructor.<p> 056 */ 057 public CmsVaadinErrorHandler() {} 058 059 /** 060 * Constructor.<p> 061 * 062 * @param ui the workplace UI 063 */ 064 public CmsVaadinErrorHandler(CmsAppWorkplaceUi ui) { 065 m_ui = ui; 066 } 067 068 /** 069 * @see com.vaadin.server.DefaultErrorHandler#error(com.vaadin.server.ErrorEvent) 070 */ 071 @Override 072 public void error(ErrorEvent event) { 073 074 super.error(event); 075 if (m_ui != null) { 076 m_ui.onError(); 077 } 078 Throwable throwable = event.getThrowable(); 079 if (!(throwable instanceof SocketException)) { 080 LOG.error(throwable.getLocalizedMessage(), throwable); 081 } 082 } 083 084}