1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import java.awt.Component;
  25 import java.awt.Dimension;
  26 import java.awt.Rectangle;
  27 import java.awt.Toolkit;
  28 import javax.swing.JComponent;
  29 import javax.swing.JFrame;
  30 import javax.swing.JPanel;
  31 import javax.swing.JTabbedPane;
  32 import javax.swing.JViewport;
  33 import javax.swing.SwingUtilities;
  34 import javax.swing.UIManager;
  35 import javax.swing.plaf.metal.MetalLookAndFeel;
  36 
  37 
  38 /**
  39  * @test
  40  * @bug 7170310
  41  * @author Alexey Ivanov
  42  * @summary Selected tab should be scrolled into view.
  43  * @library ../../../../lib/testlibrary/
  44  * @build ExtendedRobot
  45  * @run main bug7170310
  46  */
  47 public class bug7170310 {
  48     private static final int TABS_NUMBER = 3;
  49 
  50     private static volatile JTabbedPane tabbedPane;
  51     private static volatile int count = 1;
  52 
  53     private static volatile JFrame frame;
  54 
  55     private static volatile Exception exception = null;
  56 
  57     public static void main(String[] args) throws Exception {
  58         try {
  59             UIManager.setLookAndFeel(new MetalLookAndFeel());
  60             SwingUtilities.invokeAndWait(bug7170310::createAndShowUI);
  61 
  62             sync();
  63 
  64             for (int i = 0; i < TABS_NUMBER; i++) {
  65                 SwingUtilities.invokeAndWait(bug7170310::addTab);
  66                 sync();
  67             }
  68 
  69             SwingUtilities.invokeAndWait(bug7170310::check);
  70 
  71             if (exception != null) {
  72                 System.out.println("Test failed: " + exception.getMessage());
  73                 throw exception;
  74             } else {
  75                 System.out.printf("Test passed");
  76             }
  77         } finally {
  78             frame.dispose();
  79         }
  80     }
  81 
  82     private static void createAndShowUI() {
  83         frame = new JFrame("bug7170310");
  84         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  85         frame.setSize(200, 100);
  86 
  87         tabbedPane = new JTabbedPane();
  88         tabbedPane.addTab("Main Tab", new JPanel());
  89 
  90         tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
  91 
  92         frame.getContentPane().add(tabbedPane);
  93         frame.setVisible(true);
  94     }
  95 
  96     private static void addTab() {
  97         tabbedPane.addTab("Added Tab " + count++, new JPanel());
  98         tabbedPane.setSelectedIndex(tabbedPane.getTabCount() - 1);
  99     }
 100 
 101     private static void check() {
 102         try {
 103             JViewport vp = null;
 104             for (Component c : tabbedPane.getComponents()) {
 105                 if (c instanceof JViewport) {
 106                     vp = (JViewport) c;
 107                     break;
 108                 }
 109             }
 110 
 111             JComponent v = (JComponent) vp.getView();
 112             Rectangle vr = vp.getViewRect();
 113             Dimension vs = v.getSize();
 114 
 115             // The tab view must be scrolled to the end so that the last tab is visible
 116             if (vs.width != (vr.x + vr.width)) {
 117                 throw new RuntimeException("tabScroller.tabPanel view is positioned incorrectly: "
 118                         + vs.width + " vs " + (vr.x + vr.width));
 119             }
 120         } catch (Exception e) {
 121             exception = e;
 122         }
 123     }
 124     private static void sync() {
 125         try {
 126              ExtendedRobot robot = new ExtendedRobot();
 127              robot.waitForIdle(300);
 128          }catch(Exception ex) {
 129              ex.printStackTrace();
 130              throw new Error("Unexpected Failure");
 131          }
 132     }
 133 }