Package org.apache.log4j.chainsaw.messages

Class MessageCenter

java.lang.Object

org.apache.log4j.chainsaw.messages.MessageCenter

public class MessageCenter
extends java.lang.Object

The MessageCenter is central place for all elements within Chainsaw to notify the user of important information.

This class uses log4j itself quite significantly. All user message are sent to this classes log4j Logger (org.apache.log4j.chainsaw.message.MessageCenter).

To register a message with the user, you can use the addMessage(String) style methods on this class, or just as easily, get a handle to this class' logger, and log it as you would normally do.

All events to this logger are trapped within a Custom appender (additivity will be switched OFF), which stores the events in a ListModel.

You can invoke the setVisible() method to display all the messages

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	MessageCenter.LayoutListCellRenderer	This class simply renders an event by delegating the effort to a Log4j layout instance.

Field Summary

Fields

Modifier and Type	Field	Description
private ListModelAppender	appender
private javax.swing.Action	clearAction
private javax.swing.JPanel	componentPanel
private static MessageCenter	instance
private org.apache.log4j.Layout	layout
private javax.swing.ListCellRenderer	listCellRenderer
private org.apache.log4j.Logger	logger
private javax.swing.JList<org.apache.log4j.spi.LoggingEvent>	messageList
private javax.swing.JScrollPane	pane
private PopupListener	popupListener
private javax.swing.JPopupMenu	popupMenu
private java.beans.PropertyChangeSupport	propertySupport
private javax.swing.JToolBar	toolbar

Constructor Summary

Constructors

Modifier	Constructor	Description
private	MessageCenter()

Method Summary

Modifier and Type	Method	Description
void	addMessage(java.lang.String message)
javax.swing.JComponent	getGUIComponent()
static MessageCenter	getInstance()
org.apache.log4j.Layout	getLayout()
org.apache.log4j.Logger	getLogger()	Returns the logger that can be used to log messages to display within the Message Center.
javax.swing.ListModel<org.apache.log4j.spi.LoggingEvent>	getModel()
void	setLayout(org.apache.log4j.Layout layout)
private void	setupActions()
private void	setupComponentPanel()
private void	setupListeners()
private void	setupLogger()
private void	setupPopMenu()
private void	setupToolbar()
private void	updateActions()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

instance

private static final MessageCenter instance

logger

private final org.apache.log4j.Logger logger

layout

private org.apache.log4j.Layout layout

messageList

private final javax.swing.JList<org.apache.log4j.spi.LoggingEvent> messageList

appender

private final ListModelAppender appender

listCellRenderer

private javax.swing.ListCellRenderer listCellRenderer

propertySupport

private java.beans.PropertyChangeSupport propertySupport

pane

private javax.swing.JScrollPane pane

toolbar

private final javax.swing.JToolBar toolbar

popupMenu

private javax.swing.JPopupMenu popupMenu

popupListener

private PopupListener popupListener

clearAction

private javax.swing.Action clearAction

componentPanel

private final javax.swing.JPanel componentPanel

Constructor Detail

MessageCenter

private MessageCenter()

Method Detail

setupPopMenu

private void setupPopMenu()

setupToolbar

private void setupToolbar()

setupActions

private void setupActions()

setupListeners

private void setupListeners()

updateActions

private void updateActions()

setupLogger

private void setupLogger()

setupComponentPanel

private void setupComponentPanel()

getGUIComponent

public final javax.swing.JComponent getGUIComponent()

getModel

public javax.swing.ListModel<org.apache.log4j.spi.LoggingEvent> getModel()

getInstance

public static MessageCenter getInstance()

addMessage

public void addMessage(java.lang.String message)

getLayout

public final org.apache.log4j.Layout getLayout()

Returns:

Returns the layout used by the MessageCenter.

setLayout

public final void setLayout(org.apache.log4j.Layout layout)

Parameters:

layout - Sets the layout to be used by the MessageCenter .

getLogger

public final org.apache.log4j.Logger getLogger()

Returns the logger that can be used to log messages to display within the Message Center.

Returns:

logger