javax.swing.text: class: GapContent.InsertUndo

javax.swing.text
class: GapContent.InsertUndo [javadoc | source]

java.lang.Object
   javax.swing.undo.AbstractUndoableEdit
      javax.swing.text.GapContent$InsertUndo

All Implemented Interfaces:
UndoableEdit, Serializable

UnoableEdit created for inserts.

Field Summary
protected int	offset	Where string was inserted.
protected int	length	Length of string inserted.
protected String	string	The string that was inserted. This will only be valid after an undo.
protected Vector	posRefs	An array of instances of UndoPosRef for the Positions in the range that was removed, valid after undo.

Fields inherited from javax.swing.undo.AbstractUndoableEdit:
UndoName, RedoName, hasBeenDone, alive

Constructor:
protected InsertUndo(int offset, int length) { super(); this.offset = offset; this.length = length; }

Method from javax.swing.text.GapContent$InsertUndo Summary:
redo, undo

Methods from javax.swing.undo.AbstractUndoableEdit:
addEdit, canRedo, canUndo, die, getPresentationName, getRedoPresentationName, getUndoPresentationName, isSignificant, redo, replaceEdit, toString, undo

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from javax.swing.text.GapContent$InsertUndo Detail:
public void redo() throws CannotRedoException { super.redo(); try { insertString(offset, string); string = null; // Update the Positions that were in the range removed. if(posRefs != null) { updateUndoPositions(posRefs, offset, length); posRefs = null; } } catch (BadLocationException bl) { throw new CannotRedoException(); } }
public void undo() throws CannotUndoException { super.undo(); try { // Get the Positions in the range being removed. posRefs = getPositionsInRange(null, offset, length); string = getString(offset, length); remove(offset, length); } catch (BadLocationException bl) { throw new CannotUndoException(); } }

Method from javax.swing.text.GapContent$InsertUndo Detail:

 public  void redo() throws CannotRedoException {
            super.redo();
            try {
                insertString(offset, string);
                string = null;
                // Update the Positions that were in the range removed.
                if(posRefs != null) {
                    updateUndoPositions(posRefs, offset, length);
                    posRefs = null;
                }
            } catch (BadLocationException bl) {
                throw new CannotRedoException();
            }
}

 public  void undo() throws CannotUndoException {
            super.undo();
            try {
                // Get the Positions in the range being removed.
                posRefs = getPositionsInRange(null, offset, length);
                string = getString(offset, length);
                remove(offset, length);
            } catch (BadLocationException bl) {
              throw new CannotUndoException();
            }
}