| /* |
| * 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.taverna.lang.ui.tabselector; |
| |
| import java.awt.event.ActionEvent; |
| import java.awt.event.ActionListener; |
| |
| import javax.swing.JButton; |
| import javax.swing.JComponent; |
| |
| /** |
| * Controls tab scrolling when there is not enough space to show all the tabs. |
| * |
| * @author David Withers |
| */ |
| public class ScrollController { |
| |
| private int position; |
| private final JButton scrollLeft; |
| private final JButton scrollRight; |
| |
| public ScrollController(final JComponent component) { |
| scrollLeft = new JButton("<"); |
| scrollRight = new JButton(">"); |
| scrollLeft.setOpaque(true); |
| scrollRight.setOpaque(true); |
| scrollLeft.addActionListener(new ActionListener() { |
| @Override |
| public void actionPerformed(ActionEvent e) { |
| increment(); |
| component.doLayout(); |
| } |
| }); |
| scrollRight.addActionListener(new ActionListener() { |
| @Override |
| public void actionPerformed(ActionEvent e) { |
| decrement(); |
| component.doLayout(); |
| } |
| }); |
| } |
| |
| public JButton getScrollLeft() { |
| return scrollLeft; |
| } |
| |
| public JButton getScrollRight() { |
| return scrollRight; |
| } |
| |
| public int getPosition() { |
| return position; |
| } |
| |
| public void reset() { |
| position = 0; |
| } |
| |
| public void increment() { |
| position++; |
| } |
| |
| public void decrement() { |
| position--; |
| } |
| |
| } |