Name: jk109818 Date: 11/14/2002


FULL PRODUCT VERSION :
java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-b01)
Java HotSpot(TM) Client VM (build 1.4.1_01-b01, mixed mode)

FULL OPERATING SYSTEM VERSION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
After making a new selection in a JList through typing the
initials of the items name, the selected item doesnt
become visible.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Start the swingset2 application tab JFileChooser
2. Select through typing a non displayed directory
3. The directory will be selected but not scrolled into
the visible area

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER WORKAROUND :
// Thats not a workaround but a possible patch in file
// BasicListUI (look for the keyword Patch)

    private static class KeyHandler implements KeyListener
{

private String prefix = "";
private long lastTime = 0L;

/**
* Invoked when a key has been typed.
*
* Moves the keyboard focus to the first element
* whose first letter matches the alphanumeric key
* pressed by the user. Subsequent same key presses
* move the keyboard focus to the next object that
* starts with the same letter.
*/
public void keyTyped(KeyEvent e) {
JList src = (JList)e.getSource();
ListModel model = src.getModel();

            if (model.getSize() == 0 || e.isAltDown() ||
e.isControlDown() || e.isMetaDown()) {
                // Nothing to select
                return;
            }
boolean startingFromSelection = true;

char c = e.getKeyChar();

long time = e.getWhen();
int startIndex;
if (time - lastTime < 1000L && (prefix.length
() != 1 || c != prefix.charAt(0))) {
prefix += c;
startIndex = src.getSelectedIndex();
} else {
prefix = "" + c;
startIndex = src.getSelectedIndex() + 1;
}
lastTime = time;

if (startIndex < 0 || startIndex >=
model.getSize()) {
startingFromSelection = false;
startIndex = 0;
}
int index = src.getNextMatch(prefix,
startIndex,

Position.Bias.Forward);
if (index >= 0) {
src.setSelectedIndex(index);
// Patch
src.ensureIndexIsVisible(index);
// End Patch
} else if (startingFromSelection) { // wrap
index = src.getNextMatch(prefix, 0,

Position.Bias.Forward);
if (index >= 0) {
src.setSelectedIndex(index);
// Patch
src.ensureIndexIsVisible(index);
// End Patch
}
}
}

/**
* Invoked when a key has been pressed.
*/
public void keyPressed(KeyEvent e) {
}

/**
* Invoked when a key has been released.
* See the class description for {@link KeyEvent}
for a definition of
* a key released event.
*/
public void keyReleased(KeyEvent e) {
}
    }
(Review ID: 166943)
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