AbstractDocument.ElementEdit (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Ed. 5.0

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javax.swing.text
Class AbstractDocument.ElementEdit

java.lang.Object
  javax.swing.undo.AbstractUndoableEdit
      javax.swing.text.AbstractDocument.ElementEdit

All Implemented Interfaces:: Serializable, DocumentEvent.ElementChange, UndoableEdit

Enclosing class:: AbstractDocument

public static class AbstractDocument.ElementEdit
extends AbstractUndoableEdit
implements DocumentEvent.ElementChange
extends AbstractUndoableEdit
implements DocumentEvent.ElementChange

An implementation of ElementChange that can be added to the document event.

Field Summary

Fields inherited from class javax.swing.undo.AbstractUndoableEdit

RedoName, UndoName

Constructor Summary

AbstractDocument.ElementEdit(Element e, int index, Element[] removed, Element[] added)
          Constructs an edit record.

Method Summary

Element[] getChildrenAdded()
          Gets a list of children that were added.

Element[] getChildrenRemoved()
          Gets a list of children that were removed.

Element getElement()
          Returns the underlying element.

int getIndex()
          Returns the index into the list of elements.

void redo()
          Redoes a change.

void undo()
          Undoes a change.

Methods inherited from class javax.swing.undo.AbstractUndoableEdit

addEdit, canRedo, canUndo, die, getPresentationName, getRedoPresentationName, getUndoPresentationName, isSignificant, replaceEdit, toString

Methods inherited from class java.lang.Object

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

Fields inherited from class javax.swing.undo.AbstractUndoableEdit
`RedoName, UndoName`

Constructor Summary
`AbstractDocument.ElementEdit(Element e, int index, Element[] removed, Element[] added)` Constructs an edit record.

Method Summary
`Element[]`	`getChildrenAdded()` Gets a list of children that were added.
`Element[]`	`getChildrenRemoved()` Gets a list of children that were removed.
`Element`	`getElement()` Returns the underlying element.
`int`	`getIndex()` Returns the index into the list of elements.
`void`	`redo()` Redoes a change.
`void`	`undo()` Undoes a change.

Methods inherited from class javax.swing.undo.AbstractUndoableEdit
`addEdit, canRedo, canUndo, die, getPresentationName, getRedoPresentationName, getUndoPresentationName, isSignificant, replaceEdit, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

AbstractDocument.ElementEdit

public AbstractDocument.ElementEdit(Element e,
                                    int index,
                                    Element[] removed,
                                    Element[] added)

Constructs an edit record. This does not modify the element so it can safely be used to catch up a view to the current model state for views that just attached to a model.

Parameters:: e - the element; index - the index into the model >= 0; removed - a set of elements that were removed; added - a set of elements that were added

Method Detail

getElement

public Element getElement()

Returns the underlying element.

Specified by:: getElement in interface DocumentEvent.ElementChange

Returns:: the element

getIndex

public int getIndex()

Returns the index into the list of elements.

Specified by:: getIndex in interface DocumentEvent.ElementChange

Returns:: the index >= 0

getChildrenRemoved

public Element[] getChildrenRemoved()

Gets a list of children that were removed.

Specified by:: getChildrenRemoved in interface DocumentEvent.ElementChange

Returns:: the list

getChildrenAdded

public Element[] getChildrenAdded()

Gets a list of children that were added.

Specified by:: getChildrenAdded in interface DocumentEvent.ElementChange

Returns:: the list

redo

public void redo()
          throws CannotRedoException

Redoes a change.

Specified by:: redo in interface UndoableEdit
Overrides:: redo in class AbstractUndoableEdit

Throws:: CannotRedoException - if the change cannot be redone
See Also:: AbstractUndoableEdit.canRedo()

undo

public void undo()
          throws CannotUndoException

Undoes a change.

Specified by:: undo in interface UndoableEdit
Overrides:: undo in class AbstractUndoableEdit

Throws:: CannotUndoException - if the change cannot be undone
See Also:: AbstractUndoableEdit.canUndo()