Use javax.swing.Component constants when assigning to xLayoutAlignment.

Author: Allan Jacobs

examples/src/main/scala/scala/swing/examples/tutorials/components/FrameDemo2.scala

@@ -246,8 +246,7 @@ class MyFrame extends Frame {
   contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.PAGE_AXIS))
   contentPane.add(Box.createVerticalGlue()) // takes all extra space
   contentPane.add(button.peer)
-  // button.peer.setAlignmentX(Component.CENTER_ALIGNMENT) //horizontally centered
-  button.xLayoutAlignment = 0.50 // Center
+  button.xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
   contentPane.add(Box.createVerticalStrut(5)) //spacer
   //
   listenTo(button)

examples/src/main/scala/scala/swing/examples/tutorials/components/ListDialog.scala

@@ -74,15 +74,13 @@ class ListDialog(frame: Frame, locationComp: Component,
     }
     selection.intervalMode = ListView.IntervalMode.SingleInterval
   }
-  // Setting the selection mode of the peer does not have an effect.
   list.peer.setLayoutOrientation(javax.swing.JList.HORIZONTAL_WRAP)
   val lSelect = list.selection
   defaultButton = setButton
   //
   val listScroller = new ScrollPane(list) {
     preferredSize = new Dimension(250, 80)
-    // peer.setAlignmentX(java.awt.Component.LEFT_ALIGNMENT)
-    xLayoutAlignment = 0.0 // Left
+    xLayoutAlignment = java.awt.Component.LEFT_ALIGNMENT
   }
   //
   //Create a container so that we can add a title around
@@ -117,9 +115,6 @@ class ListDialog(frame: Frame, locationComp: Component,
   listenTo(cancelButton)
   listenTo(list.mouse.clicks)
 //  listenTo(list.selection)
-  //Getting the selections out of the ListView is problematic.  I can't figure out a way to get
-  //it to work.  There are no demos available that use ListViews and actually consume the choices
-  //made with the list.  Maybe it is a broken component?
   reactions += {
     case ButtonClicked(`setButton`) => 
       setValue(list.listData(list.selection.leadIndex))

examples/src/main/scala/scala/swing/examples/tutorials/components/ListDialogRunner.scala

@@ -50,19 +50,19 @@ class ListDialogRunner(frame: Frame) extends BoxPanel(Orientation.NoOrientation)
 
   //Create the labels.
   val intro = new Label("The chosen name:") {
-    xLayoutAlignment = 0.50 // Center
+    xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
   }
   val nameLabel = new Label(names(1)) {
     //Use a wacky font if it exists. If not, this falls
     //back to a font we know exists.
     font = getAFont()
-    xLayoutAlignment = 0.50 // Center
+    xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
   }
   intro.peer.setLabelFor(nameLabel.peer)
 
   //Create the button.
   val button = new Button("Pick a new name...") {
-    xLayoutAlignment = 0.50 // Center
+    xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
   }
 
   contents += intro

examples/src/main/scala/scala/swing/examples/tutorials/components/SliderDemo.scala

@@ -62,7 +62,7 @@ class SliderDemo(window: Window) extends BoxPanel(Orientation.Vertical) with Act
 
   val sliderLabel = new Label("Frames Per Second") {
     horizontalAlignment = Alignment.Center
-    xLayoutAlignment = 0.50 // Center
+    xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
   }
 
   val framesPerSecond = new Slider {
@@ -81,7 +81,7 @@ class SliderDemo(window: Window) extends BoxPanel(Orientation.Vertical) with Act
 
   val picture = new Label() {
     horizontalAlignment = Alignment.Center
-    xLayoutAlignment = 0.50 // Center
+    xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
     Swing.Lowered
     border = Swing.CompoundBorder(
       Swing.BeveledBorder(Swing.Lowered), Swing.EmptyBorder(10, 10, 10, 10))

examples/src/main/scala/scala/swing/examples/tutorials/components/SliderDemo2.scala

@@ -81,7 +81,7 @@ class SliderDemo2(window: Window) extends BorderPanel with ActionListener {
 
   val picture = new Label() {
     horizontalAlignment = Alignment.Center
-    xLayoutAlignment = 0.50 // Center
+    xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
     Swing.Lowered
     border = Swing.CompoundBorder(
       Swing.BeveledBorder(Swing.Lowered), Swing.EmptyBorder(10, 10, 10, 10))

examples/src/main/scala/scala/swing/examples/tutorials/components/TablePrintDemo.scala

@@ -65,7 +65,7 @@ class TablePrintDemo extends BoxPanel(Orientation.Vertical) {
   //Add a print button.
   val printButton = new Button("Print") {
     // peer.setAlignmentX(0.5f)
-    xLayoutAlignment = 0.50 // Center
+    xLayoutAlignment = java.awt.Component.CENTER_ALIGNMENT
   }
 
   //Add the scroll pane to this panel.