palmed.edit.selection
Class CharacterInsertion

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

All Implemented Interfaces:

IAction

public final class CharacterInsertion
extends AbstractAction

This class implements an action to insert a character at a given position.

Version:

$Revision$ $Date$

Author:

Mathieu Champlon

Constructor Summary

CharacterInsertion(ISelection selection, IText text, char value, Coordinate insertion)
Create a type 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

CharacterInsertion

public CharacterInsertion(ISelection selection,
                          IText text,
                          char value,
                          Coordinate insertion)

Create a type action.

Parameters:

selection - the selection

text - the text

value - the character to insert

insertion - the insertion position

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