import	scala.swing.{BorderPanel, Button, ListView, FlowPanel, MainFrame, Menu, MenuBar, MenuItem, ScrollPane, SimpleGUIApplication}
import	scala.swing.event.{ActionEvent, ButtonClicked}

class HandGrepFrame(var lines:List[String]) extends MainFrame {
	
	title = "Hand Grep"
	
	menuBar = new MenuBar
	
	val	menu:Menu = new Menu("file")
	val	quitMenu:MenuItem = new MenuItem("quit")
	
	menu.contents += quitMenu
	menuBar.contents += menu
	
	val	list:ListView[String] = new ListView(lines)
	val	quit:Button = new Button("quit")
	
	contents = new BorderPanel {
		
		import BorderPanel.Position._
		
		layout(new ScrollPane(list)) = Center
		layout(new FlowPanel(FlowPanel.Alignment.Right) { contents += quit }) = South
	}
	
	listenTo(quitMenu, quit)
	reactions += {
		case ActionEvent(`quitMenu`) | ButtonClicked(`quit`) => quitHandler
	}
	
	preferredSize = (600, 480)
	pack
	
	def quitHandler:Unit = {
		list.selection.items.foreach(Console.println)
		System.exit(0)
	}
}

object HandGrep extends SimpleGUIApplication {
	val	lines:List[String] = readLines
	def readLines:List[String] = Console.in.ready match {
			case false => List[String]()
			case _ => Console.readLine :: readLines
		}
	def top = new HandGrepFrame(lines)
}