org.argeo.cms.ui/src/org/argeo/cms/util/SystemNotifications.java

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