/******************************************************************************
* Copyright (C) 2006-2012 IFS Institute for Software and others
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Original authors:
* Dennis Hunziker
* Ueli Kistler
* Reto Schuettel
* Robin Stocker
* Contributors:
* Fabio Zadrozny <fabiofz@gmail.com> - initial implementation
******************************************************************************/
/*
* Copyright (C) 2006, 2007 Dennis Hunziker, Ueli Kistler
* Copyright (C) 2007 Reto Schuettel, Robin Stocker
*
* IFS Institute for Software, HSR Rapperswil, Switzerland
*
*/
package org.python.pydev.refactoring.ui.pages.listener;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Table;
public class ButtonActivationListener implements Listener {
private Table table;
private Button upButton;
private Button downButton;
private Button editButton;
public ButtonActivationListener(Table table, Button upButton, Button downButton, Button editButton) {
this.table = table;
this.upButton = upButton;
this.downButton = downButton;
this.editButton = editButton;
}
@Override
public void handleEvent(Event event) {
updateButtonState();
}
private void updateButtonState() {
editButton.setEnabled(false);
upButton.setEnabled(true);
downButton.setEnabled(true);
if (table.getSelectionCount() == 1) {
editButton.setEnabled(true);
if (table.getSelectionIndex() == table.getItemCount() - 1) {
downButton.setEnabled(false);
}
if (table.getSelectionIndex() == 0) {
upButton.setEnabled(false);
}
}
}
}