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  1. JDK
  2. JDK-8044371

setOneTouchExpandable functionality of JSplitPane will reduce vertical Scrollbar

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 7u3, 7u60, 8u5, 9
    • Fix Version/s: 9
    • Component/s: client-libs
    • Subcomponent:
    • Resolved In Build:
      b24
    • OS:
      generic

      Backports

        Description

        FULL PRODUCT VERSION :
        jdk1.7.0_03

        ADDITIONAL OS VERSION INFORMATION :
        Microsoft Windows [Version 6.1.7601]

        A DESCRIPTION OF THE PROBLEM :
        One touch expandable button of JSplitPane will reduce the vertical scroll bar value by 15 if vertical scroll bar is scrolled to maximum value and then, clicked one-touch Expandable button to minimise the left pane.

        Anyone can verify this by seeing GUI where scroll bar position is changed. Same can also be verified using console output.


        REPRODUCIBILITY :
        This bug can be reproduced always.

        ---------- BEGIN SOURCE ----------
        package de.dbsystems.tpn.anita.client.konstr;
        import java.awt.event.AdjustmentEvent;
        import java.awt.event.AdjustmentListener;

        import javax.swing.JFrame;
        import javax.swing.JLabel;
        import javax.swing.JPanel;
        import javax.swing.JScrollPane;
        import javax.swing.JSplitPane;
        import javax.swing.JTree;
        import javax.swing.SwingUtilities;
        import javax.swing.tree.DefaultMutableTreeNode;
        import javax.swing.tree.TreePath;

        /**
         * Sample code.
         *
         * @author Saurav.Kumar
         *
         */
        public class OneTouchBug {

            public void playUI() {
                DefaultMutableTreeNode root;
                root = new DefaultMutableTreeNode(0);
                final JTree tree = new JTree(root);
                JLabel bugLabel = new JLabel(
                         " <html>One touch button will reduce the vScroll <br> " +
                         " value by 15 if it is scrolled to maximum value and <br> " +
                         " then click one-touch Expandable " );
                JPanel p = new JPanel();
                p.add(bugLabel);
                final JScrollPane jScrollPane = new JScrollPane(tree, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                        JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
                final JSplitPane sptPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, jScrollPane, p);
                sptPane.setDividerLocation(90);
                sptPane.setOneTouchExpandable(true);
                jScrollPane.getVerticalScrollBar().addAdjustmentListener(new AdjustmentListener() {
                    @Override
                    public void adjustmentValueChanged(AdjustmentEvent e) {
                        System.out.println( " ======================= " + e.getValue());
                    }
                });
                JFrame f = new JFrame();
                f.getContentPane().add(sptPane);
                f.setSize(400, 200);
                f.setLocationRelativeTo(null);
                f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                f.setVisible(true);
                populateTree(root);
                tree.scrollPathToVisible(new TreePath(root.getLastLeaf().getPath()));
            }

            private void populateTree(DefaultMutableTreeNode root) {
                DefaultMutableTreeNode currentNode = root;
                int counter = 0;
                while (counter++ < 9) {
                    DefaultMutableTreeNode nextNode = new DefaultMutableTreeNode( " " + counter);
                    currentNode.add(nextNode);
                    currentNode = nextNode;
                }

            }

            public static void main(String[] args) {
                SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                        new OneTouchBug().playUI();
                    }
                });
            }
        }

        ---------- END SOURCE ----------

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                • Assignee:
                  anashaty Anton Nashatyrev (Inactive)
                  Reporter:
                  webbuggrp Webbug Group
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                  • Created:
                    Updated:
                    Resolved: