// Display a JFrame
// Note, this will not be shown in the notebook, but will be shown as a floating window.
// To render the JFrame inline, you will need to pull out the content panenl of the JFrame
// but be aware that the size might be wrong.
import java.awt.Color
import java.awt.Dimension
import java.awt.GraphicsConfiguration
import java.awt.RenderingHints
import java.awt.image.BufferedImage
import java.io.File
import javax.swing.*

val frame = JFrame("Color Changer")
frame.defaultCloseOperation = JFrame.DISPOSE_ON_CLOSE // EXIT_ON_CLOSE doesn't work
frame.preferredSize = Dimension(300, 200)
val panel = JPanel()
//panel.preferredSize = Dimension(300, 200)
val button1 = JButton("Button 1")
val button2 = JButton("Button 2")
val button3 = JButton("Button 3")
button1.addActionListener { panel.background = Color.RED }
button2.addActionListener { panel.background = Color.GREEN }
button3.addActionListener { panel.background = Color.BLUE }
panel.add(button1)
panel.add(button2)
panel.add(button3)
frame.add(panel)
frame.pack()
frame.isVisible = true
frame // Frames are shown outside IDEA

// Display a JDialog
// Note, this will not be shown in the notebook, but will be shown as a floating window.
// To render the JDialog inline, you will need to pull out the content panenl of the JDialog
// but be aware that the size might be wrong.
val dialog = JDialog()
dialog.defaultCloseOperation = JFrame.DISPOSE_ON_CLOSE // EXIT_ON_CLOSE doesn't work
dialog.preferredSize = Dimension(300, 200)
val panel = JPanel()
//panel.preferredSize = Dimension(300, 200)
val button1 = JButton("Button 1")
val button2 = JButton("Button 2")
val button3 = JButton("Button 3")
button1.addActionListener { panel.background = Color.RED }
button2.addActionListener { panel.background = Color.GREEN }
button3.addActionListener { panel.background = Color.BLUE }
panel.add(button1)
panel.add(button2)
panel.add(button3)
dialog.add(panel)
dialog.pack()
dialog.isVisible = true
dialog // Dialogs are shown outside IDEA

// Display a JPanel
// JPanels will be displayed inline in
import java.awt.Color
import java.awt.Dimension
import java.awt.GraphicsConfiguration
import java.awt.RenderingHints
import java.awt.image.BufferedImage
import java.io.File
import javax.swing.*

val panel = JPanel()
panel.size = Dimension(300, 200)
panel.preferredSize = Dimension(300, 200)
val button1 = JButton("Button 2")
button1.size = Dimension(100, 50)
panel.add(button1)
panel.isVisible = true
panel // Panels are shown inside IDEA