palmed.edit.selection
Class CharacterDeletion

java.lang.Object
  palmed.edit.selection.AbstractAction
      palmed.edit.selection.CharacterDeletion

All Implemented Interfaces:

IAction

public final class CharacterDeletion
extends AbstractAction

This class implements an action to delete the previous character from the current insertion point.

Version:

$Revision$ $Date$

Author:

Mathieu Champlon

Constructor Summary

CharacterDeletion(ISelection selection)
Create a delete action.

Method Summary

boolean	merge(IAction action) Merge another action.
protected void	onPerform() Perform the action.
protected boolean	onRedo() Redo the action.
protected boolean	onUndo() Undo the action.

Methods inherited from class palmed.edit.selection.AbstractAction

backupData, overwriteFinalState, perform, prependData, redo, restoreData, undo

Methods inherited from class java.lang.Object

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

Constructor Detail

CharacterDeletion

public CharacterDeletion(ISelection selection)

Create a delete action.

Parameters:

selection - the selection

Method Detail

onPerform

protected void onPerform()

Perform the action.

Specified by:

onPerform in class AbstractAction

onUndo

protected boolean onUndo()

Undo the action.

Specified by:

onUndo in class AbstractAction

Returns:

Whether the initial state must be restored or not

onRedo

protected boolean onRedo()

Redo the action.

Specified by:

onRedo in class AbstractAction

Returns:

Whether the final state must be restored or not

merge

public boolean merge(IAction action)

Merge another action.

Parameters:

action - the action to merge

Returns:

whether the merging was possible or not