Added a Swing ColorChooser wrapper

Author: ingoem

docs/examples/swing/ColorChooserDemo.scala

@@ -0,0 +1,61 @@
+package examples.swing
+
+import java.awt.{Color, Font, Dimension}
+import swing._
+import event._
+import Swing._
+import BorderPanel._
+
+/**
+ * Demo for ColorChooser.
+ * Based on http://download.oracle.com/javase/tutorial/uiswing/components/colorchooser.html
+ * 
+ * @author andy@hicks.net
+ */
+object ColorChooserDemo extends SimpleSwingApplication {
+  def top = new MainFrame {
+    title = "ColorChooser Demo"
+    size = new Dimension(400, 400)
+    
+    contents = ui
+  }
+
+  def ui = new BorderPanel {
+    val colorChooser = new ColorChooser {
+      reactions += {
+        case ColorChanged(_, c) =>
+          banner.foreground = c
+      }
+    }
+
+    colorChooser.border = TitledBorder(EtchedBorder, "Choose Text Color")
+    
+    val banner = new Label("Welcome to Scala Swing") {
+      horizontalAlignment = Alignment.Center
+      foreground = Color.yellow
+      background = Color.blue
+      opaque = true
+      font = new Font("SansSerif", Font.BOLD, 24)
+    }
+   
+    val bannerArea = new BorderPanel {
+      layout(banner) = Position.Center
+      border = TitledBorder(EtchedBorder, "Banner")
+    }
+    
+    // Display a color selection dialog when button pressed 
+    val selectColor = new Button("Choose Background Color") {
+      reactions += {
+        case ButtonClicked(_) =>
+          ColorChooser.showDialog(this, "Test", Color.red) match {
+            case Some(c) => banner.background = c
+            case None =>
+          }
+      }
+    }
+
+    layout(bannerArea) = Position.North
+    layout(colorChooser) = Position.Center
+    layout(selectColor) = Position.South
+  }
+}

src/swing/scala/swing/ColorChooser.scala

@@ -0,0 +1,45 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2007-2012, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+
+
+package scala.swing
+
+import javax.swing.JColorChooser
+import event._
+
+/**
+ * Wrapper for JColorChooser. Publishes  `ColorChanged` events, when the color selection changes.
+ * 
+ * @author andy@hicks.net
+ * @author Ingo Maier
+ * @see javax.swing.JColorChooser
+ */
+object ColorChooser {
+  def showDialog(parent: Component, title: String, color: Color): scala.Option[Color] = {
+    toOption[Color](javax.swing.JColorChooser.showDialog(parent.peer, title, color))
+  }
+}
+
+class ColorChooser(color0: Color) extends Component  {
+  def this() = this(java.awt.Color.white)
+  
+  override lazy val peer: JColorChooser =  new JColorChooser(color0) with SuperMixin
+
+  peer.getSelectionModel.addChangeListener(new javax.swing.event.ChangeListener {
+    def stateChanged(e: javax.swing.event.ChangeEvent) { 
+      publish(ColorChanged(ColorChooser.this, peer.getColor)) 
+    }
+  })
+
+  def color: Color = peer.getColor
+  def color_=(c: Color) = peer.setColor(c)
+
+  def dragEnabled: Boolean = peer.getDragEnabled
+  def dragEnabled_=(b: Boolean) = peer.setDragEnabled(b)
+}

src/swing/scala/swing/event/ColorChanged.scala

@@ -0,0 +1,14 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2007-2011, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+
+
+package scala.swing
+package event
+
+case class ColorChanged(source: Component, c: Color) extends ComponentEvent with SelectionEvent