lapisx.swing
Class CoalescingUndo

java.lang.Object
  lapisx.swing.CoalescingUndo

public abstract class CoalescingUndo

extends Object

This class coalesces multiple typed keystrokes into a single undoable event. To use it, just replace your undo event listener attachment call document.addUndoableEditListener (undoManager) with a call to CoalescingUndo.addUndoableEditListener (document, undoManager).

Nested Class Summary

protected static class	CoalescingUndo.KeyTypedAction
protected static class	CoalescingUndo.KeyTypedEdit

Field Summary

protected static boolean	installed
protected static String	UNDO_LISTENER

Constructor Summary

CoalescingUndo()

Method Summary

static UndoableEditListener	getUndoableEditListener(Document doc)
protected static void	install()
static void	setUndoableEditListener(Document doc, UndoableEditListener undo) Attaches an undo listener to a document in such a way that multiple typed keystrokes are coalesced into a single undoable edit.

Methods inherited from class java.lang.Object

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

Field Detail

installed

protected static boolean installed

UNDO_LISTENER

protected static final String UNDO_LISTENER

See Also:

Constant Field Values

Constructor Detail

CoalescingUndo

public CoalescingUndo()

Method Detail

setUndoableEditListener

public static void setUndoableEditListener(Document doc,
                                           UndoableEditListener undo)

Attaches an undo listener to a document in such a way that multiple typed keystrokes are coalesced into a single undoable edit. Only one undo listener may be attached to a document with this call.

Parameters:

doc - Document generating the edit events

undo - Listener receiving the edit events, usually an instance of UndoManager

getUndoableEditListener

public static UndoableEditListener getUndoableEditListener(Document doc)

install

protected static void install()