/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The Whole Platform is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.ui.commands;
/**
* @author Enrico Persiani
*/
public class TextTransactionCommand extends ModelTransactionCommand {
protected ITextCommand textCommand;
public TextTransactionCommand() {
this(null);
}
public TextTransactionCommand(String label) {
setLabel(label);
}
public boolean canMerge(ITextCommand command) {
return isFirstMerge() || (canUndo() && textCommand.sameType(command));
}
protected boolean isFirstMerge() {
return textCommand == null;
}
public void merge(ITextCommand command) {
try {
begin();
command.execute();
if (isFirstMerge()) {
commit();
setLabel((textCommand = command).getLabel());
} else {
mergeCommit();
textCommand.merge(command);
}
animated = false;
} catch (Exception e) {
command.restoreInitialSelection();
rollbackIfNeeded();
}
}
public void undo() {
super.undo();
textCommand.restoreInitialSelection();
}
public void redo() {
super.redo();
textCommand.restoreFinalSelection();
}
}