In our Swing application, we show error messages using JOptionPane.showOptionDialog. However, some of the messages are long and we would like to limit the height of the dialog and show a scrollbar. We thought of using HTML and CSS in the dialog text to limit the height and show scrollbar, but it seems Swing s HTML & CSS is quite limited.
Can anyone thing of a way to do it, other then developing our own dialog to show error messages?
Thanks
splintor
The message parameter to the showOptionDialog method is of Object type. The API documentation specifies different behaviours depending on what type is passed there. What should be helpfull in your case is the possibility of passing Component object. This way you can pass any component, including JScrollPane which will handle scrollbars if necessary. So if your message is in String msg instead of passing it directly you should construct something like this: new JScrollPane(new JLabel(msg)).
What you show on the JOptionPane is an Object. While you usually use a String, nothing stops you from displaying a non-editable JTextArea (which has scrollbar behavior built in, I believe) or a JScrollPane containing a large JLabel (or anything like that).
You ll want to set the PreferredSize on the JScrollPane, and perhaps also setHorizontalScrollBarPolicy and setVerticalScrollBarPolicy.
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