com.fr.design.gui.syntax.ui.rtextarea

类 RUndoManager

java.lang.Object

javax.swing.undo.AbstractUndoableEdit

javax.swing.undo.CompoundEdit

javax.swing.undo.UndoManager

com.fr.design.gui.syntax.ui.rtextarea.RUndoManager

所有已实现的接口:

java.io.Serializable, java.util.EventListener, javax.swing.event.UndoableEditListener, javax.swing.undo.UndoableEdit

public class RUndoManager
extends javax.swing.undo.UndoManager

This class manages undos/redos for a particular editor pane. It groups all undos that occur one character position apart together, to avoid Java's horrible "one character at a time" undo behavior. It also recognizes "replace" actions (i.e., text is selected, then the user types), and treats it as a single action, instead of a remove/insert action pair.

版本:

1.0

作者:

Robert Futrell

另请参阅:

序列化表格

字段概要

从类继承的字段 javax.swing.undo.CompoundEdit

edits

从类继承的字段 javax.swing.undo.AbstractUndoableEdit

RedoName, UndoName

构造器概要

构造器

构造器和说明
RUndoManager(RTextArea textArea) Constructor.

方法概要

方法

限定符和类型	方法和说明
void	beginInternalAtomicEdit() Begins an "atomic" edit.
void	endInternalAtomicEdit() Ends an "atomic" edit.
java.lang.String	getCantRedoText() Returns the localized "Can't Redo" string.
java.lang.String	getCantUndoText() Returns the localized "Can't Undo" string.
void	redo()
void	undo()
void	undoableEditHappened(javax.swing.event.UndoableEditEvent e)
void	updateActions() Ensures that undo/redo actions are enabled appropriately and have descriptive text at all times.

从类继承的方法 javax.swing.undo.UndoManager

addEdit, canRedo, canUndo, canUndoOrRedo, discardAllEdits, editToBeRedone, editToBeUndone, end, getLimit, getRedoPresentationName, getUndoOrRedoPresentationName, getUndoPresentationName, redoTo, setLimit, toString, trimEdits, trimForLimit, undoOrRedo, undoTo

从类继承的方法 javax.swing.undo.CompoundEdit

die, getPresentationName, isInProgress, isSignificant, lastEdit

从类继承的方法 javax.swing.undo.AbstractUndoableEdit

replaceEdit

从类继承的方法 java.lang.Object

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

构造器详细资料

RUndoManager

public RUndoManager(RTextArea textArea)

Constructor.

参数:

textArea - The parent text area.

方法详细资料

beginInternalAtomicEdit

public void beginInternalAtomicEdit()

Begins an "atomic" edit. This method is called when RTextArea KNOWS that some edits should be compound automatically, such as when the user is typing in overwrite mode (the deletion of the current char + insertion of the new one) or the playing back of a macro.

另请参阅:

endInternalAtomicEdit()

endInternalAtomicEdit

public void endInternalAtomicEdit()

Ends an "atomic" edit.

另请参阅:

beginInternalAtomicEdit()

getCantRedoText

public java.lang.String getCantRedoText()

Returns the localized "Can't Redo" string.

返回:

The localized "Can't Redo" string.

另请参阅:

getCantUndoText()

getCantUndoText

public java.lang.String getCantUndoText()

Returns the localized "Can't Undo" string.

返回:

The localized "Can't Undo" string.

另请参阅:

getCantRedoText()

redo

public void redo()
          throws javax.swing.undo.CannotRedoException

指定者:

redo 在接口中 javax.swing.undo.UndoableEdit

覆盖:

redo 在类中 javax.swing.undo.UndoManager

抛出:

javax.swing.undo.CannotRedoException

undo

public void undo()
          throws javax.swing.undo.CannotUndoException

指定者:

undo 在接口中 javax.swing.undo.UndoableEdit

覆盖:

undo 在类中 javax.swing.undo.UndoManager

抛出:

javax.swing.undo.CannotUndoException

undoableEditHappened

public void undoableEditHappened(javax.swing.event.UndoableEditEvent e)

指定者:

undoableEditHappened 在接口中 javax.swing.event.UndoableEditListener

覆盖:

undoableEditHappened 在类中 javax.swing.undo.UndoManager

updateActions

public void updateActions()

Ensures that undo/redo actions are enabled appropriately and have descriptive text at all times.