/
App.kt
68 lines (60 loc) · 1.77 KB
/
App.kt
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package example
import java.awt.*
import javax.swing.*
fun makeUI(): Component {
val log = JTextArea()
val tk = Toolkit.getDefaultToolkit()
val key = "awt.file.showHiddenFiles"
val showHiddenFiles = tk.getDesktopProperty(key)
log.text = "$key: $showHiddenFiles"
val chooser = JFileChooser()
descendants(chooser)
.filterIsInstance<JComponent>()
.mapNotNull { it.componentPopupMenu }
.first()
.also { pop ->
pop.addSeparator()
val item = JCheckBoxMenuItem("isFileHidingEnabled")
item.addActionListener {
val b = (it.source as? JCheckBoxMenuItem)?.isSelected == true
chooser.isFileHidingEnabled = b
}
item.isSelected = chooser.isFileHidingEnabled
pop.add(item)
}
val button = JButton("showOpenDialog")
button.addActionListener {
val retValue = chooser.showOpenDialog(log.rootPane)
if (retValue == JFileChooser.APPROVE_OPTION) {
log.text = chooser.selectedFile.absolutePath
}
}
val p = JPanel()
p.border = BorderFactory.createTitledBorder("JFileChooser")
p.add(button)
return JPanel(BorderLayout()).also {
it.add(p, BorderLayout.NORTH)
it.add(JScrollPane(log))
it.preferredSize = Dimension(320, 240)
}
}
fun descendants(parent: Container): List<Component> = parent.components
.filterIsInstance<Container>()
.flatMap { listOf(it) + descendants(it) }
fun main() {
EventQueue.invokeLater {
runCatching {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName())
}.onFailure {
it.printStackTrace()
Toolkit.getDefaultToolkit().beep()
}
JFrame().apply {
defaultCloseOperation = WindowConstants.EXIT_ON_CLOSE
contentPane.add(makeUI())
pack()
setLocationRelativeTo(null)
isVisible = true
}
}
}