util/SystemNotifications.java

   1 package org.argeo.cms.ui.util;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5 import java.io.UnsupportedEncodingException;
   6 import java.net.URLEncoder;
   7 import java.text.SimpleDateFormat;
   8 import java.util.Date;
   9
  10 import org.apache.commons.io.IOUtils;
  11 import org.argeo.cms.CmsException;
  12 import org.argeo.cms.swt.CmsStyles;
  13 import org.argeo.cms.swt.CmsSwtUtils;
  14 import org.eclipse.rap.rwt.RWT;
  15 import org.eclipse.swt.SWT;
  16 import org.eclipse.swt.events.MouseEvent;
  17 import org.eclipse.swt.events.MouseListener;
  18 import org.eclipse.swt.events.ShellAdapter;
  19 import org.eclipse.swt.events.ShellEvent;
  20 import org.eclipse.swt.layout.GridData;
  21 import org.eclipse.swt.layout.GridLayout;
  22 import org.eclipse.swt.widgets.Composite;
  23 import org.eclipse.swt.widgets.Control;
  24 import org.eclipse.swt.widgets.Label;
  25 import org.eclipse.swt.widgets.Shell;
  26
  27 /** Shell displaying system notifications such as exceptions */
  28 public class SystemNotifications extends Shell implements CmsStyles,
  29                 MouseListener {
  30         private static final long serialVersionUID = -8129377525216022683L;
  31
  32         private Control source;
  33
  34         public SystemNotifications(Control source) {
  35                 super(source.getDisplay(), SWT.NO_TRIM | SWT.BORDER | SWT.ON_TOP);
  36                 setData(RWT.CUSTOM_VARIANT, CMS_USER_MENU);
  37
  38                 this.source = source;
  39
  40                 // TODO UI
  41                 // setLocation(source.toDisplay(source.getSize().x - getSize().x,
  42                 // source.getSize().y));
  43                 setLayout(new GridLayout());
  44                 addMouseListener(this);
  45
  46                 addShellListener(new ShellAdapter() {
  47                         private static final long serialVersionUID = 5178980294808435833L;
  48
  49                         @Override
  50                         public void shellDeactivated(ShellEvent e) {
  51                                 close();
  52                                 dispose();
  53                         }
  54                 });
  55
  56         }
  57
  58         public void notifyException(Throwable exception) {
  59                 Composite pane = this;
  60
  61                 Label lbl = new Label(pane, SWT.NONE);
  62                 lbl.setText(exception.getLocalizedMessage()
  63                                 + (exception instanceof CmsException ? "" : "("
  64                                                 + exception.getClass().getName() + ")") + "\n");
  65                 lbl.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
  66                 lbl.addMouseListener(this);
  67                 if (exception.getCause() != null)
  68                         appendCause(pane, exception.getCause());
  69
  70                 StringBuilder mailToUrl = new StringBuilder("mailto:?");
  71                 try {
  72                         mailToUrl.append("subject=").append(
  73                                         URLEncoder.encode(
  74                                                         "Exception "
  75                                                                         + new SimpleDateFormat("yyyy-MM-dd hh:mm")
  76                                                                                         .format(new Date()), "UTF-8")
  77                                                         .replace("+", "%20"));
  78
  79                         StringWriter sw = new StringWriter();
  80                         exception.printStackTrace(new PrintWriter(sw));
  81                         IOUtils.closeQuietly(sw);
  82
  83                         // see
  84                         // http://stackoverflow.com/questions/4737841/urlencoder-not-able-to-translate-space-character
  85                         String encoded = URLEncoder.encode(sw.toString(), "UTF-8").replace(
  86                                         "+", "%20");
  87                         mailToUrl.append("&amp;body=").append(encoded);
  88                 } catch (UnsupportedEncodingException e) {
  89                         mailToUrl.append("&amp;body=").append("Could not encode: ")
  90                                         .append(e.getMessage());
  91                 }
  92                 Label mailTo = new Label(pane, SWT.NONE);
  93                 CmsSwtUtils.markup(mailTo);
  94                 mailTo.setText("<a href=\"" + mailToUrl + "\">Send details</a>");
  95                 mailTo.setLayoutData(new GridData(SWT.END, SWT.FILL, true, false));
  96
  97                 pack();
  98                 layout();
  99
 100                 setLocation(source.toDisplay(source.getSize().x - getSize().x,
 101                                 source.getSize().y - getSize().y));
 102                 open();
 103         }
 104
 105         private void appendCause(Composite parent, Throwable e) {
 106                 Label lbl = new Label(parent, SWT.NONE);
 107                 lbl.setText(" caused by: " + e.getLocalizedMessage() + " ("
 108                                 + e.getClass().getName() + ")" + "\n");
 109                 lbl.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
 110                 lbl.addMouseListener(this);
 111                 if (e.getCause() != null)
 112                         appendCause(parent, e.getCause());
 113         }
 114
 115         @Override
 116         public void mouseDoubleClick(MouseEvent e) {
 117         }
 118
 119         @Override
 120         public void mouseDown(MouseEvent e) {
 121                 close();
 122                 dispose();
 123         }
 124
 125         @Override
 126         public void mouseUp(MouseEvent e) {
 127         }
 128
 129 }