How to limit visible rows in a JList in groovy - groovy

Question

I'm building a small dialog.
I using Groovy from a gradle build script.
The dialog consists of a JList, a JTextField and a JButton.
The list is populated with names of files. There are many files so I only wanna show 5 files together with a scollbar to go thru the list.
I have tried to set visibleRowCount but it still shows all rows.
new SwingBuilder().edt {
dialog(modal: true, // Otherwise the build will continue running before you closed the dialog
title: 'Enter program name',// Dialog title
alwaysOnTop: true, // pretty much what the name says
resizable: true, // Don't allow the user to resize the dialog
locationRelativeTo: null, // Place dialog in center of the screen
pack: true, // We need to pack the dialog (so it will take the size of it's children
show: true // Let's show it
) {
vbox { // Put everything below each other
label(text: "Program Name:")
list(id:"programName", items: progNames, visibleRowCount: 8)
label(text: "Start Rule Name:")
input = textField(id: 'ruleName', text: startRuleName)
button(defaultButton: true, text: 'OK', actionPerformed: {
testProgram = programName.selectedValuesList
startRuleName = ruleName.text
dispose() // Close dialog
})
}
}
}
How can I limit the number of visible rows?

Answer 1

You just need to wrap the call to list in a scrollPane node, ie:
new groovy.swing.SwingBuilder().edt {
dialog(modal: true, // Otherwise the build will continue running before you closed the dialog
title: 'Enter program name',// Dialog title
alwaysOnTop: true, // pretty much what the name says
resizable: true, // Don't allow the user to resize the dialog
locationRelativeTo: null, // Place dialog in center of the screen
pack: true, // We need to pack the dialog (so it will take the size of it's children
show: true // Let's show it
) {
vbox { // Put everything below each other
label(text: "Program Name:")
scrollPane {
list(id:"programName", items: progNames, visibleRowCount: 8)
}
label(text: "Start Rule Name:")
input = textField(id: 'ruleName', text: startRuleName)
button(defaultButton: true, text: 'OK', actionPerformed: {
testProgram = programName.selectedValuesList
startRuleName = ruleName.text
dispose() // Close dialog
})
}
}
}