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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
****************************************************************/
package org.apache.cayenne.modeler.undo;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
import javax.swing.undo.UndoableEdit;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.action.RedoAction;
import org.apache.cayenne.modeler.action.UndoAction;
import org.apache.cayenne.modeler.util.CayenneAction;
public class CayenneUndoManager extends javax.swing.undo.UndoManager {
private Application application;
public CayenneUndoManager(Application application) {
this.application = application;
setLimit(100);
}
@Override
public synchronized void discardAllEdits() {
super.discardAllEdits();
updateUI();
}
@Override
public synchronized boolean addEdit(UndoableEdit anEdit) {
boolean result = super.addEdit(anEdit);
updateUI();
return result;
}
@Override
public synchronized void redo() throws CannotRedoException {
UndoableEdit e = editToBeRedone();
if (e instanceof TextCompoundEdit) {
TextCompoundEdit edit = (TextCompoundEdit) e;
edit.watchCaretPosition();
super.redo();
edit.stopWatchingCaretPosition();
}
else {
super.redo();
}
updateUI();
}
@Override
public synchronized void undo() throws CannotUndoException {
UndoableEdit e = editToBeUndone();
if (e instanceof TextCompoundEdit) {
TextCompoundEdit edit = (TextCompoundEdit) e;
edit.watchCaretPosition();
super.undo();
edit.stopWatchingCaretPosition();
}
else {
super.undo();
}
updateUI();
}
private void updateUI() {
CayenneAction undoAction = application.getActionManager().getAction(
UndoAction.class);
CayenneAction redoAction = application.getActionManager().getAction(
RedoAction.class);
undoAction.setEnabled(canUndo());
redoAction.setEnabled(canRedo());
undoAction.setName(getUndoPresentationName());
redoAction.setName(getRedoPresentationName());
}
}