Vertical scroll ONLY

Question

Hi,
I'm trying to make a JTextArea scrollable in vertical direction only. I've not found even one solution on this forum and many others.
AWT version of JTextArea (ie TextArea) allowed vertical or horizontal scroll only, simply with constants given to the constructor. But in Swing version (ie JTextArea), nothing... :-o
My JTextArea used word-wrap, so that's why I don't want a hrz scroll, cause when i've got such a both-direction-scroll, word-wrap is no more required since JTextArea width increased...
I tried this :
JScrollPane scrollPane = new JScrollPane(textArea,
     JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
     JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);of course, even if the horz scrollbar was no more visible, the jtextarea width was still extended.
I just want something like a Word document, like a simple textarea on a web page, and so on...
so I tryed to force the textarea width to match the viewport width with a "resize-listener" :
scrollPane.addComponentListener(new ComponentAdapter()
  public void componentResized(ComponentEvent e)
    Dimension dim = new Dimension(scrollPane.getViewport().getWidth(),
     (int)textArea.getPreferredSize().getHeight());
    textArea.setPreferredSize(dim);
    textArea.revalidate();
});it looks better but now my vertical scrollbar doesn't scroll the entire document (the scrollpane thinks textarea is smaller than it is) this is surely due to the line wrap, but I don't know how to deal with it...
please help !
many thanks in advance :)

Answer 1

This is what i do, and it usually works:
list = new JList(aListOfItems);
scrollPane = new JScrollPane(list);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);          
scrollPane.setMaximumSize(new Dimension(160,200));
I've sometimes found that if i fail to set the scrollpane's size, it does not come up on screen properly, so maybe that's your problem.
By the way, there are 6 arguments that the setHorizontalScrollBarPolicy / setVerticalScrollBarPolicy method can take:
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER
JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED
JScrollPane.VERTICAL_SCROLLBAR_NEVER
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED
It's pretty obvious what they mean.