package org.jtheque.undo; /* * Copyright JTheque (Baptiste Wicht) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import org.jtheque.utils.annotations.ThreadSafe; import javax.swing.undo.UndoableEdit; /** * An undo-redo manager specification. * * @author Baptiste Wicht */ @ThreadSafe public interface UndoRedoService { /** * Undo the last action. */ void undo(); /** * Redo the last action that has been undo. */ void redo(); /** * Add an <code>UndoableEdit</code>. * * @param edit The edit to add. * * @return true if the action has been added else false. */ boolean addEdit(UndoableEdit edit); /** * Add the state listener. * * @param stateListener The state listener. */ void addStateListener(StateListener stateListener); /** * Remove the state listener. * * @param stateListener The state listener to remove. */ void removeStateListener(StateListener stateListener); }