package uk.co.wingpath.gui;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import uk.co.wingpath.event.*;
import uk.co.wingpath.event.Event;
import uk.co.wingpath.util.*;
public class StatusBar
extends JPanel
implements Reporter
{
private final JLabel icon;
private final JLabel text;
private final Icon errorIcon;
private final Icon warningIcon;
private final Icon informationIcon;
private final Border border;
private ValueListener clearListener;
private Action cancelAction;
private Action clearAction;
private final String id;
private boolean hasError;
private boolean hasWarning;
private final ValueEventSource statusListeners;
private final HelpViewer helpViewer;
private String helpId;
private final Action helpAction;
public StatusBar (String id, final HelpViewer helpViewer)
{
Event.checkIsEventDispatchThread ();
this.id = id;
this.helpViewer = helpViewer;
border = BorderFactory.createLoweredBevelBorder ();
errorIcon = UIManager.getIcon ("OptionPane.errorIcon");
warningIcon = UIManager.getIcon ("OptionPane.warningIcon");
informationIcon = UIManager.getIcon ("OptionPane.informationIcon");
setLayout (new BoxLayout (this, BoxLayout.X_AXIS));
icon = new JLabel ();
String exampleLine =
"This_is_an_example_line_that_is_45_chars_long
";
text = new JLabel ("" + exampleLine + exampleLine + exampleLine);
clearListener = null;
cancelAction = null;
clearAction = null;
hasError = false;
hasWarning = false;
statusListeners = new ValueEventSource ();
helpId = null;
add (Box.createHorizontalStrut (10));
add (icon);
add (text);
helpAction =
new AbstractAction ("Error Help")
{
public void actionPerformed (ActionEvent e)
{
Event.checkIsEventDispatchThread ();
if (helpViewer != null && helpId != null)
helpViewer.viewError (helpId);
}
};
helpAction.putValue (Action.SHORT_DESCRIPTION,
"Get help on this error message");
InputMap inputMap = getInputMap (JComponent.WHEN_IN_FOCUSED_WINDOW);
inputMap.put (KeyStroke.getKeyStroke (KeyEvent.VK_F4, 0),
"error_help");
getActionMap ().put ("error_help", helpAction);
Dimension textSize = text.getMinimumSize ();
int minHeight = errorIcon == null ? 0 : errorIcon.getIconHeight ();
if (textSize.height > minHeight)
minHeight = textSize.height;
int minWidth = errorIcon == null ? 0 : errorIcon.getIconWidth ();
minWidth += textSize.width;
setPreferredSize (new Dimension (minWidth + 2, minHeight + 2));
clear ();
}
public StatusBar (String id)
{
this (id, null);
}
public ValueListener getClearListener (final String cid)
{
Event.checkIsEventDispatchThread ();
if (clearListener == null)
{
clearListener = new ValueListener ()
{
public void valueChanged (ValueEvent e)
{
clear (cid);
}
};
}
return clearListener;
}
private void reset ()
{
removeAll ();
helpId = null;
InputMap inputMap = getInputMap (JComponent.WHEN_IN_FOCUSED_WINDOW);
inputMap.remove (KeyStroke.getKeyStroke (KeyEvent.VK_F4, 0));
setBorder (null);
text.setText ("");
icon.setIcon (null);
add (Box.createHorizontalStrut (10));
add (icon);
add (text);
}
private void redisplay (boolean err, boolean warn)
{
revalidate ();
repaint ();
if (err != hasError)
{
hasError = err;
statusListeners.fireValueChanged (this);
}
if (warn != hasWarning)
{
hasWarning = warn;
statusListeners.fireValueChanged (this);
}
}
private void escapeString (StringBuilder sb, String str)
{
for (int i = 0 ; i < str.length () ; i++)
{
char c = str.charAt (i);
switch (c)
{
case '>':
sb.append (">");
break;
case '<':
sb.append ("<");
break;
case '&':
sb.append ("&");
break;
case '"':
sb.append (""");
break;
default:
sb.append (c);
break;
}
}
}
private void showText (String message)
{
String [] lines = message.split ("\n");
StringBuilder sb = new StringBuilder ();
sb.append ("");
boolean first = true;
for (int i = 0 ; i < lines.length ; i++)
{
if (lines [i].length () != 0)
{
if (!first)
sb.append ("
");
escapeString (sb, lines [i]);
first = false;
}
}
text.setText (sb.toString ());
}
private void addButton (Action action)
{
if (action == null)
return;
JButton button = new JButton (action);
button.setRequestFocusEnabled (false);
add (button);
}
private void addButtons (Action [] actions)
{
for (Action action : actions)
addButton (action);
if (helpViewer != null && helpId != null)
{
addButton (helpAction);
InputMap inputMap = getInputMap (JComponent.WHEN_IN_FOCUSED_WINDOW);
inputMap.put (KeyStroke.getKeyStroke (KeyEvent.VK_F4, 0),
"error_help");
}
}
public final void clear ()
{
if (!EventQueue.isDispatchThread ())
{
EventQueue.invokeLater (new Runnable ()
{
public void run ()
{
clear ();
}
});
return;
}
reset ();
redisplay (false, false);
}
public final void clear (final String cid)
{
if (!EventQueue.isDispatchThread ())
{
EventQueue.invokeLater (new Runnable ()
{
public void run ()
{
clear (cid);
}
});
return;
}
reset ();
redisplay (false, false);
}
public void showMessage (final String helpId, final String message,
final Action... actions)
{
if (!EventQueue.isDispatchThread ())
{
EventQueue.invokeLater (new Runnable ()
{
public void run ()
{
showMessage (helpId, message, actions);
}
});
return;
}
if (hasWarning || hasError)
return;
reset ();
this.helpId = helpId;
setBorder (border);
showText (message);
addButtons (actions);
redisplay (false, false);
}
public void showMessage (final String message, final Action... actions)
{
showMessage (null, message, actions);
}
public void showMessage (String fmt, Object... args)
{
String msg = String.format (fmt, args);
showMessage (msg);
}
public void showError (final String helpId, final String message,
final Action... actions)
{
if (!EventQueue.isDispatchThread ())
{
EventQueue.invokeLater (new Runnable ()
{
public void run ()
{
showError (helpId, message, actions);
}
});
return;
}
reset ();
this.helpId = helpId;
setBorder (border);
showText (message);
icon.setIcon (errorIcon);
addButtons (actions);
redisplay (true, false);
}
public void showError (final String message, final Action... actions)
{
showError (null, message, actions);
}
public void showError (String fmt, Object... args)
{
String msg = String.format (fmt, args);
showError (msg);
}
public void showWarning (final String helpId, final String message,
final Action... actions)
{
if (!EventQueue.isDispatchThread ())
{
EventQueue.invokeLater (new Runnable ()
{
public void run ()
{
showWarning (helpId, message, actions);
}
});
return;
}
if (hasError)
return;
reset ();
this.helpId = helpId;
setBorder (border);
showText (message);
icon.setIcon (warningIcon);
addButtons (actions);
redisplay (false, true);
}
public void showWarning (final String message, final Action... actions)
{
showWarning (null, message, actions);
}
public Action getClearAction ()
{
if (clearAction == null)
{
clearAction = new AbstractAction ("Clear")
{
public void actionPerformed (ActionEvent e)
{
clear ();
}
};
clearAction.putValue (Action.MNEMONIC_KEY, KeyEvent.VK_C);
clearAction.putValue (Action.SHORT_DESCRIPTION,
"Clear status bar message");
}
return clearAction;
}
public Action getCancelAction ()
{
if (cancelAction == null)
{
cancelAction = new AbstractAction ("Cancel")
{
public void actionPerformed (ActionEvent e)
{
clear ();
}
};
cancelAction.putValue (Action.MNEMONIC_KEY, KeyEvent.VK_C);
}
return cancelAction;
}
public void showInfo (final String helpId, final String message,
final Action... actions)
{
if (!EventQueue.isDispatchThread ())
{
EventQueue.invokeLater (new Runnable ()
{
public void run ()
{
showInfo (helpId, message, actions);
}
});
return;
}
if (hasWarning || hasError)
return;
reset ();
this.helpId = helpId;
setBorder (border);
showText (message);
icon.setIcon (informationIcon);
addButtons (actions);
redisplay (false, false);
}
public void showInfo (final String message, final Action... actions)
{
showInfo (null, message, actions);
}
public void showException (Throwable ex, Action... actions)
{
String msg = Exceptions.getMessage (ex);
if (ex instanceof Helpful)
showError (((Helpful) ex).getHelpId (), msg, actions);
else
showError (msg, actions);
}
public boolean hasError ()
{
return hasError;
}
public boolean hasWarning ()
{
return hasWarning;
}
@Override
public void warn (String helpId, String fmt, Object... args)
{
String msg = String.format (fmt, args);
showWarning (helpId, msg, getClearAction ());
}
@Override
public boolean fatal (String fmt, Object... args)
{
String msg = String.format (fmt, args);
showError (null, msg, getClearAction ());
return false;
}
@Override
public boolean fatal (Throwable t, String fmt, Object... args)
{
String msg = String.format (fmt, args);
showError (null, msg, getClearAction ());
return false;
}
@Override
public void error (String helpId, String fmt, Object... args)
{
String msg = String.format (fmt, args);
showError (helpId, msg, getClearAction ());
}
@Override
public void info (String helpId, String fmt, Object... args)
{
String msg = String.format (fmt, args);
showInfo (helpId, msg, getClearAction ());
}
@Override
public void trace (String helpId, String fmt, Object... args)
{
}
@Override
public boolean debug (String fmt, Object... args)
{
return true;
}
public void addStatusListener (ValueListener l)
{
statusListeners.addListener (l);
}
public void removeStatusListener (ValueListener l)
{
statusListeners.removeListener (l);
}
}