Java tutorial
/* * This library is part of OpenCms - * the Open Source Content Management System * * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * For further information about Alkacon Software, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.opencms.ui.components; import org.opencms.main.OpenCms; import org.opencms.ui.A_CmsUI; import org.opencms.ui.CmsVaadinUtils; import org.opencms.ui.FontOpenCms; import org.opencms.ui.Messages; import org.opencms.util.CmsUUID; import org.apache.commons.lang.exception.ExceptionUtils; import com.vaadin.shared.ui.label.ContentMode; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import com.vaadin.ui.CssLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Window; import com.vaadin.ui.Window.CloseEvent; import com.vaadin.ui.Window.CloseListener; /** * Dialog used to display error stack traces in the workplace.<p> */ public class CmsErrorDialog extends CmsBasicDialog { /** Serial version id. */ private static final long serialVersionUID = 1L; /** Label to display. */ private Label m_errorLabel; /** Error message label. */ private Label m_errorMessage; /** Warning icon. */ private Label m_icon; /** Hidden stack trace element. */ private Label m_hiddenStack; /** The OK button. */ private Button m_okButton; /** The dialog context. */ private Runnable m_onClose; /** The dialog window. */ private Window m_window; /** The details component. */ private CssLayout m_details; /** The select text button. */ private CmsCopyToClipboardButton m_copyText; /** The toggle details button. */ private Button m_detailsButton; /** * Creates a new instance.<p> * * @param message the error message * @param t the error to be displayed * @param onClose executed on close * @param window the dialog window if available */ public CmsErrorDialog(String message, Throwable t, Runnable onClose, final Window window) { m_onClose = onClose; m_window = window; CmsVaadinUtils.readAndLocalizeDesign(this, OpenCms.getWorkplaceManager().getMessages(A_CmsUI.get().getLocale()), null); m_icon.setContentMode(ContentMode.HTML); m_icon.setValue(FontOpenCms.ERROR.getHtml()); m_errorLabel.setContentMode(ContentMode.PREFORMATTED); final String labelId = "label" + new CmsUUID().toString(); String stacktrace = message + "\n\n" + ExceptionUtils.getFullStackTrace(t); m_hiddenStack.setId(labelId); m_hiddenStack.setValue(stacktrace); m_errorLabel.setValue(stacktrace); m_errorLabel.addStyleName(OpenCmsTheme.FULL_WIDTH_PADDING); m_errorMessage.setContentMode(ContentMode.HTML); m_errorMessage.setValue(message); m_copyText.setSelector("#" + labelId); m_details.setVisible(false); m_okButton.addClickListener(new ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(ClickEvent event) { onClose(); } }); m_detailsButton.addClickListener(new ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(ClickEvent event) { toggleDetails(); } }); if (m_window != null) { m_window.addCloseListener(new CloseListener() { private static final long serialVersionUID = 1L; public void windowClose(CloseEvent e) { onClose(); } }); } } /** * Shows the error dialog.<p> * * @param message the error message * @param t the error to be displayed */ public static void showErrorDialog(String message, Throwable t) { showErrorDialog(message, t, null); } /** * Shows the error dialog.<p> * * @param message the error message * @param t the error to be displayed * @param onClose executed on close */ public static void showErrorDialog(String message, Throwable t, Runnable onClose) { Window window = prepareWindow(DialogWidth.wide); window.setCaption(Messages.get().getBundle(A_CmsUI.get().getLocale()).key(Messages.GUI_ERROR_0)); window.setContent(new CmsErrorDialog(message, t, onClose, window)); A_CmsUI.get().addWindow(window); } /** * Shows the error dialog.<p> * * @param t the error to be displayed */ public static void showErrorDialog(Throwable t) { showErrorDialog(t.getLocalizedMessage(), t, null); } /** * Shows the error dialog.<p> * * @param t the error to be displayed * @param onClose executed on close */ public static void showErrorDialog(Throwable t, Runnable onClose) { showErrorDialog(t.getLocalizedMessage(), t, onClose); } /** * Called on dialog close.<p> */ void onClose() { if (m_onClose != null) { m_onClose.run(); } if (m_window != null) { m_window.close(); } } /** * Toggles the details visibility.<p> */ void toggleDetails() { m_details.setVisible(!m_details.isVisible()); if (m_window != null) { m_window.center(); } } }