Java tutorial
/* ********************************************************************** ** ** Copyright notice ** ** ** ** (c) 2005-2010 RSSOwl Development Team ** ** http://www.rssowl.org/ ** ** ** ** All rights reserved ** ** ** ** This program and the accompanying materials are made available under ** ** the terms of the Eclipse Public License v1.0 which accompanies this ** ** distribution, and is available at: ** ** http://www.rssowl.org/legal/epl-v10.html ** ** ** ** A copy is found in the file epl-v10.html and important notices to the ** ** license from the team is found in the textfile LICENSE.txt distributed ** ** in this package. ** ** ** ** This copyright notice MUST APPEAR in all copies of the file! ** ** ** ** Contributors: ** ** RSSOwl Development Team - initial API and implementation ** ** ** ** ********************************************************************** */ package org.rssowl.ui.internal.dialogs; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Platform; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.resource.LocalResourceManager; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Link; import org.eclipse.swt.widgets.Shell; import org.rssowl.core.util.CoreUtils; import org.rssowl.core.util.StringUtils; import org.rssowl.ui.internal.Activator; import org.rssowl.ui.internal.Application; import org.rssowl.ui.internal.OwlUI; import org.rssowl.ui.internal.util.BrowserUtils; import org.rssowl.ui.internal.util.LayoutUtils; import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.InputStream; /** * A Dialog that is shown to the user in case RSSOwl failed to start. * * @author bpasero */ public class StartupErrorDialog extends TitleAreaDialog { private LocalResourceManager fResources; private final IStatus fErrorStatus; /** * @param errorStatus */ public StartupErrorDialog(IStatus errorStatus) { super(null); fErrorStatus = errorStatus; fResources = new LocalResourceManager(JFaceResources.getResources()); } /* * @see org.eclipse.jface.dialogs.TrayDialog#close() */ @Override public boolean close() { fResources.dispose(); return super.close(); } /* * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setText(Messages.StartupErrorDialog_RSSOWL_CRASH_REPORTER); } /* * @see org.eclipse.jface.dialogs.TitleAreaDialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ @Override protected Control createDialogArea(Composite parent) { /* Composite to hold all components */ Composite composite = new Composite((Composite) super.createDialogArea(parent), SWT.NONE); composite.setLayout(LayoutUtils.createGridLayout(2, 5, 10, 15, 5, false)); composite.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); /* Title */ setTitle(Messages.StartupErrorDialog_WE_SORRY); /* Title Image */ setTitleImage(OwlUI.getImage(fResources, "icons/wizban/welcome_wiz.gif")); //$NON-NLS-1$ /* Title Message */ setMessage(Messages.StartupErrorDialog_RSSOWL_CRASHED, IMessageProvider.WARNING); /* Crash Report Label */ Link dialogMessageLabel = new Link(composite, SWT.WRAP); dialogMessageLabel.setText(Messages.StartupErrorDialog_CRASH_DIAGNOSE); dialogMessageLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1)); dialogMessageLabel.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if ("save".equals(e.text)) //$NON-NLS-1$ doSaveErrorLog(); else doSendErrorLog(); } }); /* Recovery Label */ Link recoveryMessageLabel = new Link(composite, SWT.WRAP); recoveryMessageLabel.setText(Messages.StartupErrorDialog_CRASH_ADVISE); recoveryMessageLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 2, 1)); recoveryMessageLabel.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if ("faq".equals(e.text)) //$NON-NLS-1$ doOpenFAQ(); else if ("forum".equals(e.text)) //$NON-NLS-1$ doOpenForum(); } }); /* Error Details Label */ if (fErrorStatus != null && StringUtils.isSet(fErrorStatus.getMessage())) { Label reasonLabel = new Label(composite, SWT.NONE); reasonLabel.setText(Messages.StartupErrorDialog_ERROR_DETAILS); reasonLabel.setFont(OwlUI.getBold(JFaceResources.DIALOG_FONT)); reasonLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false)); Label errorDetailsLabel = new Label(composite, SWT.WRAP); errorDetailsLabel.setText(fErrorStatus.getMessage()); errorDetailsLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); } /* Holder for the separator to the OK and Cancel buttons */ Composite sepHolder = new Composite(parent, SWT.NONE); sepHolder.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); sepHolder.setLayout(LayoutUtils.createGridLayout(1, 0, 0)); /* Separator */ Label separator = new Label(sepHolder, SWT.SEPARATOR | SWT.HORIZONTAL); separator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); applyDialogFont(composite); return composite; } /* * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int) */ @Override protected void buttonPressed(int buttonId) { setReturnCode(buttonId); close(); } /* * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ @Override protected void createButtonsForButtonBar(Composite parent) { if (!Application.IS_MAC && !Application.IS_LINUX) { //Somehow a restart fails on Linux/Mac if invoked early on startup createButton(parent, IDialogConstants.RETRY_ID, Messages.StartupErrorDialog_RESTART_RSSOWL, true); createButton(parent, IDialogConstants.CLOSE_ID, Messages.StartupErrorDialog_QUIT_RSSOWL, false); getButton(IDialogConstants.RETRY_ID).setFocus(); } else { createButton(parent, IDialogConstants.CLOSE_ID, Messages.StartupErrorDialog_QUIT_RSSOWL, true); getButton(IDialogConstants.CLOSE_ID).setFocus(); } } /* * @see org.eclipse.jface.dialogs.Dialog#initializeBounds() */ @Override protected void initializeBounds() { super.initializeBounds(); Point bestSize = getShell().computeSize(convertHorizontalDLUsToPixels(OwlUI.MIN_DIALOG_WIDTH_DLU), SWT.DEFAULT); Point location = getInitialLocation(bestSize); getShell().setBounds(location.x, location.y, bestSize.x, bestSize.y); } private void doSaveErrorLog() { FileDialog dialog = new FileDialog(getShell(), SWT.SAVE); dialog.setText(Messages.StartupErrorDialog_SAVE_CRASH_REPORT); dialog.setFilterExtensions(new String[] { "*.log" }); //$NON-NLS-1$ dialog.setFileName("rssowl.log"); //$NON-NLS-1$ dialog.setOverwrite(true); String file = dialog.open(); if (StringUtils.isSet(file)) { try { /* Check for Log Message from Core to have a complete log */ String logMessages = CoreUtils.getAndFlushLogMessages(); if (logMessages != null && logMessages.length() > 0) Activator.safeLogError(logMessages, null); /* Help to find out where the log is coming from */ Activator.safeLogInfo("Crash Report Exported"); //$NON-NLS-1$ /* Export Log File */ File logFile = Platform.getLogFileLocation().toFile(); InputStream inS; if (logFile.exists()) inS = new FileInputStream(logFile); else inS = new ByteArrayInputStream(new byte[0]); FileOutputStream outS = new FileOutputStream(new File(file)); CoreUtils.copy(inS, outS); } catch (FileNotFoundException e) { Activator.getDefault().logError(e.getMessage(), e); } } } private void doSendErrorLog() { String address = "crash-report@rssowl.org"; //$NON-NLS-1$ String subject = NLS.bind("RSSOwl Crash Report ({0})", CoreUtils.getUserAgent()); //$NON-NLS-1$ String body = Messages.StartupErrorDialog_ATTACH_CRASH_REPORT; BrowserUtils.sendMail(address, subject, body); } private void doOpenFAQ() { BrowserUtils.openLinkExternal("http://www.rssowl.org/help#item_6"); //$NON-NLS-1$ } private void doOpenForum() { BrowserUtils.openLinkExternal("http://sourceforge.net/projects/rssowl/forums/forum/296910"); //$NON-NLS-1$ } }